// Copyright 2016 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "core/fpdfapi/render/cpdf_renderstatus.h"
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#include <algorithm>
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#include <cmath>
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#include <limits>
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#include <memory>
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#include <utility>
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#include <vector>
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#include "core/fpdfapi/font/cpdf_font.h"
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#include "core/fpdfapi/font/cpdf_type3char.h"
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#include "core/fpdfapi/font/cpdf_type3font.h"
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#include "core/fpdfapi/page/cpdf_docpagedata.h"
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#include "core/fpdfapi/page/cpdf_form.h"
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#include "core/fpdfapi/page/cpdf_formobject.h"
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#include "core/fpdfapi/page/cpdf_function.h"
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#include "core/fpdfapi/page/cpdf_graphicstates.h"
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#include "core/fpdfapi/page/cpdf_image.h"
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#include "core/fpdfapi/page/cpdf_imageobject.h"
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#include "core/fpdfapi/page/cpdf_meshstream.h"
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#include "core/fpdfapi/page/cpdf_page.h"
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#include "core/fpdfapi/page/cpdf_pageobject.h"
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#include "core/fpdfapi/page/cpdf_pathobject.h"
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#include "core/fpdfapi/page/cpdf_shadingobject.h"
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#include "core/fpdfapi/page/cpdf_shadingpattern.h"
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#include "core/fpdfapi/page/cpdf_textobject.h"
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#include "core/fpdfapi/page/cpdf_tilingpattern.h"
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#include "core/fpdfapi/parser/cpdf_array.h"
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#include "core/fpdfapi/parser/cpdf_dictionary.h"
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#include "core/fpdfapi/parser/cpdf_document.h"
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#include "core/fpdfapi/render/cpdf_charposlist.h"
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#include "core/fpdfapi/render/cpdf_devicebuffer.h"
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#include "core/fpdfapi/render/cpdf_dibsource.h"
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#include "core/fpdfapi/render/cpdf_docrenderdata.h"
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#include "core/fpdfapi/render/cpdf_imagerenderer.h"
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#include "core/fpdfapi/render/cpdf_pagerendercache.h"
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#include "core/fpdfapi/render/cpdf_rendercontext.h"
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#include "core/fpdfapi/render/cpdf_renderoptions.h"
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#include "core/fpdfapi/render/cpdf_scaledrenderbuffer.h"
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#include "core/fpdfapi/render/cpdf_textrenderer.h"
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#include "core/fpdfapi/render/cpdf_transferfunc.h"
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#include "core/fpdfapi/render/cpdf_type3cache.h"
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#include "core/fpdfdoc/cpdf_occontext.h"
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#include "core/fxcrt/autorestorer.h"
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#include "core/fxcrt/cfx_fixedbufgrow.h"
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#include "core/fxcrt/fx_safe_types.h"
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#include "core/fxcrt/maybe_owned.h"
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#include "core/fxge/cfx_defaultrenderdevice.h"
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#include "core/fxge/cfx_graphstatedata.h"
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#include "core/fxge/cfx_pathdata.h"
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#include "core/fxge/cfx_renderdevice.h"
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#include "core/fxge/ifx_renderdevicedriver.h"
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#include "third_party/base/logging.h"
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#include "third_party/base/numerics/safe_math.h"
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#include "third_party/base/ptr_util.h"
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#ifdef _SKIA_SUPPORT_
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#include "core/fxge/skia/fx_skia_device.h"
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#endif
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#define SHADING_STEPS 256
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namespace {
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void ReleaseCachedType3(CPDF_Type3Font* pFont) {
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CPDF_Document* pDoc = pFont->GetDocument();
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if (!pDoc)
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return;
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pDoc->GetRenderData()->MaybePurgeCachedType3(pFont);
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pDoc->GetPageData()->ReleaseFont(pFont->GetFontDict());
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}
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class CPDF_RefType3Cache {
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public:
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explicit CPDF_RefType3Cache(CPDF_Type3Font* pType3Font)
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: m_dwCount(0), m_pType3Font(pType3Font) {}
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~CPDF_RefType3Cache() {
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while (m_dwCount--)
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ReleaseCachedType3(m_pType3Font.Get());
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}
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uint32_t m_dwCount;
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UnownedPtr<CPDF_Type3Font> const m_pType3Font;
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};
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uint32_t CountOutputs(
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const std::vector<std::unique_ptr<CPDF_Function>>& funcs) {
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uint32_t total = 0;
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for (const auto& func : funcs) {
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if (func)
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total += func->CountOutputs();
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}
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return total;
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}
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void DrawAxialShading(const RetainPtr<CFX_DIBitmap>& pBitmap,
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CFX_Matrix* pObject2Bitmap,
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CPDF_Dictionary* pDict,
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const std::vector<std::unique_ptr<CPDF_Function>>& funcs,
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CPDF_ColorSpace* pCS,
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int alpha) {
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ASSERT(pBitmap->GetFormat() == FXDIB_Argb);
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CPDF_Array* pCoords = pDict->GetArrayFor("Coords");
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if (!pCoords)
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return;
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float start_x = pCoords->GetNumberAt(0);
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float start_y = pCoords->GetNumberAt(1);
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float end_x = pCoords->GetNumberAt(2);
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float end_y = pCoords->GetNumberAt(3);
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float t_min = 0;
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float t_max = 1.0f;
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CPDF_Array* pArray = pDict->GetArrayFor("Domain");
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if (pArray) {
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t_min = pArray->GetNumberAt(0);
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t_max = pArray->GetNumberAt(1);
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}
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bool bStartExtend = false;
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bool bEndExtend = false;
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pArray = pDict->GetArrayFor("Extend");
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if (pArray) {
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bStartExtend = !!pArray->GetIntegerAt(0);
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bEndExtend = !!pArray->GetIntegerAt(1);
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}
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int width = pBitmap->GetWidth();
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int height = pBitmap->GetHeight();
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float x_span = end_x - start_x;
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float y_span = end_y - start_y;
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float axis_len_square = (x_span * x_span) + (y_span * y_span);
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uint32_t total_results =
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std::max(CountOutputs(funcs), pCS->CountComponents());
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CFX_FixedBufGrow<float, 16> result_array(total_results);
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float* pResults = result_array;
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memset(pResults, 0, total_results * sizeof(float));
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uint32_t rgb_array[SHADING_STEPS];
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for (int i = 0; i < SHADING_STEPS; i++) {
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float input = (t_max - t_min) * i / SHADING_STEPS + t_min;
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int offset = 0;
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for (const auto& func : funcs) {
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if (func) {
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int nresults = 0;
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if (func->Call(&input, 1, pResults + offset, &nresults))
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offset += nresults;
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}
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}
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float R = 0.0f;
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float G = 0.0f;
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float B = 0.0f;
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pCS->GetRGB(pResults, &R, &G, &B);
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rgb_array[i] =
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FXARGB_TODIB(FXARGB_MAKE(alpha, FXSYS_round(R * 255),
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FXSYS_round(G * 255), FXSYS_round(B * 255)));
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}
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int pitch = pBitmap->GetPitch();
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CFX_Matrix matrix = pObject2Bitmap->GetInverse();
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for (int row = 0; row < height; row++) {
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uint32_t* dib_buf = (uint32_t*)(pBitmap->GetBuffer() + row * pitch);
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for (int column = 0; column < width; column++) {
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CFX_PointF pos = matrix.Transform(
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CFX_PointF(static_cast<float>(column), static_cast<float>(row)));
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float scale =
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(((pos.x - start_x) * x_span) + ((pos.y - start_y) * y_span)) /
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axis_len_square;
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int index = (int32_t)(scale * (SHADING_STEPS - 1));
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if (index < 0) {
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if (!bStartExtend)
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continue;
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index = 0;
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} else if (index >= SHADING_STEPS) {
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if (!bEndExtend)
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continue;
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index = SHADING_STEPS - 1;
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}
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dib_buf[column] = rgb_array[index];
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}
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}
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}
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void DrawRadialShading(const RetainPtr<CFX_DIBitmap>& pBitmap,
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CFX_Matrix* pObject2Bitmap,
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CPDF_Dictionary* pDict,
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const std::vector<std::unique_ptr<CPDF_Function>>& funcs,
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CPDF_ColorSpace* pCS,
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int alpha) {
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ASSERT(pBitmap->GetFormat() == FXDIB_Argb);
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CPDF_Array* pCoords = pDict->GetArrayFor("Coords");
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if (!pCoords)
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return;
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float start_x = pCoords->GetNumberAt(0);
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float start_y = pCoords->GetNumberAt(1);
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float start_r = pCoords->GetNumberAt(2);
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float end_x = pCoords->GetNumberAt(3);
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float end_y = pCoords->GetNumberAt(4);
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float end_r = pCoords->GetNumberAt(5);
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float t_min = 0;
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float t_max = 1.0f;
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CPDF_Array* pArray = pDict->GetArrayFor("Domain");
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if (pArray) {
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t_min = pArray->GetNumberAt(0);
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t_max = pArray->GetNumberAt(1);
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}
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bool bStartExtend = false;
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bool bEndExtend = false;
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pArray = pDict->GetArrayFor("Extend");
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if (pArray) {
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bStartExtend = !!pArray->GetIntegerAt(0);
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bEndExtend = !!pArray->GetIntegerAt(1);
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}
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uint32_t total_results =
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std::max(CountOutputs(funcs), pCS->CountComponents());
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CFX_FixedBufGrow<float, 16> result_array(total_results);
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float* pResults = result_array;
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memset(pResults, 0, total_results * sizeof(float));
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uint32_t rgb_array[SHADING_STEPS];
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for (int i = 0; i < SHADING_STEPS; i++) {
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float input = (t_max - t_min) * i / SHADING_STEPS + t_min;
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int offset = 0;
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for (const auto& func : funcs) {
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if (func) {
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int nresults;
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if (func->Call(&input, 1, pResults + offset, &nresults))
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offset += nresults;
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}
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}
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float R = 0.0f;
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float G = 0.0f;
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float B = 0.0f;
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pCS->GetRGB(pResults, &R, &G, &B);
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rgb_array[i] =
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FXARGB_TODIB(FXARGB_MAKE(alpha, FXSYS_round(R * 255),
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FXSYS_round(G * 255), FXSYS_round(B * 255)));
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}
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float a = ((start_x - end_x) * (start_x - end_x)) +
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((start_y - end_y) * (start_y - end_y)) -
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((start_r - end_r) * (start_r - end_r));
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int width = pBitmap->GetWidth();
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int height = pBitmap->GetHeight();
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int pitch = pBitmap->GetPitch();
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bool bDecreasing = false;
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if (start_r > end_r) {
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int length = (int)sqrt((((start_x - end_x) * (start_x - end_x)) +
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((start_y - end_y) * (start_y - end_y))));
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if (length < start_r - end_r) {
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bDecreasing = true;
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}
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}
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CFX_Matrix matrix = pObject2Bitmap->GetInverse();
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for (int row = 0; row < height; row++) {
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uint32_t* dib_buf = (uint32_t*)(pBitmap->GetBuffer() + row * pitch);
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for (int column = 0; column < width; column++) {
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CFX_PointF pos = matrix.Transform(
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CFX_PointF(static_cast<float>(column), static_cast<float>(row)));
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float b = -2 * (((pos.x - start_x) * (end_x - start_x)) +
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((pos.y - start_y) * (end_y - start_y)) +
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(start_r * (end_r - start_r)));
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float c = ((pos.x - start_x) * (pos.x - start_x)) +
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((pos.y - start_y) * (pos.y - start_y)) - (start_r * start_r);
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float s;
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if (a == 0) {
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s = -c / b;
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} else {
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float b2_4ac = (b * b) - 4 * (a * c);
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if (b2_4ac < 0) {
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continue;
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}
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float root = sqrt(b2_4ac);
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float s1, s2;
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if (a > 0) {
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s1 = (-b - root) / (2 * a);
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s2 = (-b + root) / (2 * a);
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} else {
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s2 = (-b - root) / (2 * a);
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s1 = (-b + root) / (2 * a);
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}
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if (bDecreasing) {
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if (s1 >= 0 || bStartExtend) {
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s = s1;
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} else {
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s = s2;
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}
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} else {
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if (s2 <= 1.0f || bEndExtend) {
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s = s2;
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} else {
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s = s1;
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}
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}
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if ((start_r + s * (end_r - start_r)) < 0) {
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continue;
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}
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}
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int index = (int32_t)(s * (SHADING_STEPS - 1));
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if (index < 0) {
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if (!bStartExtend) {
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continue;
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}
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index = 0;
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}
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if (index >= SHADING_STEPS) {
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if (!bEndExtend) {
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continue;
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}
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index = SHADING_STEPS - 1;
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}
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dib_buf[column] = rgb_array[index];
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}
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}
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}
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void DrawFuncShading(const RetainPtr<CFX_DIBitmap>& pBitmap,
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CFX_Matrix* pObject2Bitmap,
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CPDF_Dictionary* pDict,
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const std::vector<std::unique_ptr<CPDF_Function>>& funcs,
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CPDF_ColorSpace* pCS,
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int alpha) {
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ASSERT(pBitmap->GetFormat() == FXDIB_Argb);
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CPDF_Array* pDomain = pDict->GetArrayFor("Domain");
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float xmin = 0, ymin = 0, xmax = 1.0f, ymax = 1.0f;
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if (pDomain) {
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xmin = pDomain->GetNumberAt(0);
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xmax = pDomain->GetNumberAt(1);
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ymin = pDomain->GetNumberAt(2);
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ymax = pDomain->GetNumberAt(3);
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}
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CFX_Matrix mtDomain2Target = pDict->GetMatrixFor("Matrix");
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CFX_Matrix matrix = pObject2Bitmap->GetInverse();
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matrix.Concat(mtDomain2Target.GetInverse());
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int width = pBitmap->GetWidth();
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int height = pBitmap->GetHeight();
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int pitch = pBitmap->GetPitch();
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uint32_t total_results =
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std::max(CountOutputs(funcs), pCS->CountComponents());
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CFX_FixedBufGrow<float, 16> result_array(total_results);
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float* pResults = result_array;
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memset(pResults, 0, total_results * sizeof(float));
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for (int row = 0; row < height; row++) {
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uint32_t* dib_buf = (uint32_t*)(pBitmap->GetBuffer() + row * pitch);
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for (int column = 0; column < width; column++) {
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CFX_PointF pos = matrix.Transform(
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CFX_PointF(static_cast<float>(column), static_cast<float>(row)));
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if (pos.x < xmin || pos.x > xmax || pos.y < ymin || pos.y > ymax)
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continue;
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float input[] = {pos.x, pos.y};
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int offset = 0;
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for (const auto& func : funcs) {
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if (func) {
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int nresults;
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if (func->Call(input, 2, pResults + offset, &nresults))
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offset += nresults;
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}
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}
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float R = 0.0f;
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float G = 0.0f;
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float B = 0.0f;
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pCS->GetRGB(pResults, &R, &G, &B);
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dib_buf[column] = FXARGB_TODIB(FXARGB_MAKE(
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alpha, (int32_t)(R * 255), (int32_t)(G * 255), (int32_t)(B * 255)));
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}
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}
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}
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bool GetScanlineIntersect(int y,
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const CFX_PointF& first,
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const CFX_PointF& second,
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float* x) {
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if (first.y == second.y)
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return false;
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if (first.y < second.y) {
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if (y < first.y || y > second.y)
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return false;
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} else if (y < second.y || y > first.y) {
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return false;
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}
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*x = first.x + ((second.x - first.x) * (y - first.y) / (second.y - first.y));
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return true;
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}
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void DrawGouraud(const RetainPtr<CFX_DIBitmap>& pBitmap,
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int alpha,
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CPDF_MeshVertex triangle[3]) {
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float min_y = triangle[0].position.y;
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float max_y = triangle[0].position.y;
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for (int i = 1; i < 3; i++) {
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min_y = std::min(min_y, triangle[i].position.y);
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max_y = std::max(max_y, triangle[i].position.y);
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}
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if (min_y == max_y)
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return;
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int min_yi = std::max(static_cast<int>(floor(min_y)), 0);
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int max_yi = static_cast<int>(ceil(max_y));
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if (max_yi >= pBitmap->GetHeight())
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max_yi = pBitmap->GetHeight() - 1;
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for (int y = min_yi; y <= max_yi; y++) {
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int nIntersects = 0;
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float inter_x[3];
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float r[3];
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float g[3];
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float b[3];
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for (int i = 0; i < 3; i++) {
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CPDF_MeshVertex& vertex1 = triangle[i];
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CPDF_MeshVertex& vertex2 = triangle[(i + 1) % 3];
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CFX_PointF& position1 = vertex1.position;
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CFX_PointF& position2 = vertex2.position;
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bool bIntersect =
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GetScanlineIntersect(y, position1, position2, &inter_x[nIntersects]);
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if (!bIntersect)
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continue;
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float y_dist = (y - position1.y) / (position2.y - position1.y);
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r[nIntersects] = vertex1.r + ((vertex2.r - vertex1.r) * y_dist);
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g[nIntersects] = vertex1.g + ((vertex2.g - vertex1.g) * y_dist);
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b[nIntersects] = vertex1.b + ((vertex2.b - vertex1.b) * y_dist);
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nIntersects++;
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}
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if (nIntersects != 2)
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continue;
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int min_x, max_x, start_index, end_index;
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if (inter_x[0] < inter_x[1]) {
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min_x = (int)floor(inter_x[0]);
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max_x = (int)ceil(inter_x[1]);
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start_index = 0;
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end_index = 1;
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} else {
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min_x = (int)floor(inter_x[1]);
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max_x = (int)ceil(inter_x[0]);
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start_index = 1;
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end_index = 0;
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}
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int start_x = std::max(min_x, 0);
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int end_x = max_x;
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if (end_x > pBitmap->GetWidth())
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end_x = pBitmap->GetWidth();
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uint8_t* dib_buf =
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pBitmap->GetBuffer() + y * pBitmap->GetPitch() + start_x * 4;
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float r_unit = (r[end_index] - r[start_index]) / (max_x - min_x);
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float g_unit = (g[end_index] - g[start_index]) / (max_x - min_x);
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float b_unit = (b[end_index] - b[start_index]) / (max_x - min_x);
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float R = r[start_index] + (start_x - min_x) * r_unit;
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float G = g[start_index] + (start_x - min_x) * g_unit;
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float B = b[start_index] + (start_x - min_x) * b_unit;
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for (int x = start_x; x < end_x; x++) {
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R += r_unit;
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G += g_unit;
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B += b_unit;
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FXARGB_SETDIB(dib_buf,
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FXARGB_MAKE(alpha, (int32_t)(R * 255), (int32_t)(G * 255),
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(int32_t)(B * 255)));
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dib_buf += 4;
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}
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}
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}
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void DrawFreeGouraudShading(
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const RetainPtr<CFX_DIBitmap>& pBitmap,
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CFX_Matrix* pObject2Bitmap,
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CPDF_Stream* pShadingStream,
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const std::vector<std::unique_ptr<CPDF_Function>>& funcs,
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CPDF_ColorSpace* pCS,
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int alpha) {
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ASSERT(pBitmap->GetFormat() == FXDIB_Argb);
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CPDF_MeshStream stream(kFreeFormGouraudTriangleMeshShading, funcs,
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pShadingStream, pCS);
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if (!stream.Load())
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return;
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CPDF_MeshVertex triangle[3];
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memset(triangle, 0, sizeof(triangle));
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while (!stream.BitStream()->IsEOF()) {
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CPDF_MeshVertex vertex;
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uint32_t flag;
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if (!stream.ReadVertex(*pObject2Bitmap, &vertex, &flag))
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return;
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if (flag == 0) {
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triangle[0] = vertex;
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for (int j = 1; j < 3; j++) {
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uint32_t tflag;
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if (!stream.ReadVertex(*pObject2Bitmap, &triangle[j], &tflag))
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return;
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}
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} else {
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if (flag == 1)
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triangle[0] = triangle[1];
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triangle[1] = triangle[2];
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triangle[2] = vertex;
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}
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DrawGouraud(pBitmap, alpha, triangle);
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}
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}
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void DrawLatticeGouraudShading(
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const RetainPtr<CFX_DIBitmap>& pBitmap,
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CFX_Matrix* pObject2Bitmap,
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CPDF_Stream* pShadingStream,
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const std::vector<std::unique_ptr<CPDF_Function>>& funcs,
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CPDF_ColorSpace* pCS,
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int alpha) {
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ASSERT(pBitmap->GetFormat() == FXDIB_Argb);
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int row_verts = pShadingStream->GetDict()->GetIntegerFor("VerticesPerRow");
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if (row_verts < 2)
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return;
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CPDF_MeshStream stream(kLatticeFormGouraudTriangleMeshShading, funcs,
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pShadingStream, pCS);
|
if (!stream.Load())
|
return;
|
|
std::vector<CPDF_MeshVertex> vertices[2];
|
vertices[0] = stream.ReadVertexRow(*pObject2Bitmap, row_verts);
|
if (vertices[0].empty())
|
return;
|
|
int last_index = 0;
|
while (1) {
|
vertices[1 - last_index] = stream.ReadVertexRow(*pObject2Bitmap, row_verts);
|
if (vertices[1 - last_index].empty())
|
return;
|
|
CPDF_MeshVertex triangle[3];
|
for (int i = 1; i < row_verts; ++i) {
|
triangle[0] = vertices[last_index][i];
|
triangle[1] = vertices[1 - last_index][i - 1];
|
triangle[2] = vertices[last_index][i - 1];
|
DrawGouraud(pBitmap, alpha, triangle);
|
triangle[2] = vertices[1 - last_index][i];
|
DrawGouraud(pBitmap, alpha, triangle);
|
}
|
last_index = 1 - last_index;
|
}
|
}
|
|
struct Coon_BezierCoeff {
|
float a, b, c, d;
|
void FromPoints(float p0, float p1, float p2, float p3) {
|
a = -p0 + 3 * p1 - 3 * p2 + p3;
|
b = 3 * p0 - 6 * p1 + 3 * p2;
|
c = -3 * p0 + 3 * p1;
|
d = p0;
|
}
|
Coon_BezierCoeff first_half() {
|
Coon_BezierCoeff result;
|
result.a = a / 8;
|
result.b = b / 4;
|
result.c = c / 2;
|
result.d = d;
|
return result;
|
}
|
Coon_BezierCoeff second_half() {
|
Coon_BezierCoeff result;
|
result.a = a / 8;
|
result.b = 3 * a / 8 + b / 4;
|
result.c = 3 * a / 8 + b / 2 + c / 2;
|
result.d = a / 8 + b / 4 + c / 2 + d;
|
return result;
|
}
|
void GetPoints(float p[4]) {
|
p[0] = d;
|
p[1] = c / 3 + p[0];
|
p[2] = b / 3 - p[0] + 2 * p[1];
|
p[3] = a + p[0] - 3 * p[1] + 3 * p[2];
|
}
|
void GetPointsReverse(float p[4]) {
|
p[3] = d;
|
p[2] = c / 3 + p[3];
|
p[1] = b / 3 - p[3] + 2 * p[2];
|
p[0] = a + p[3] - 3 * p[2] + 3 * p[1];
|
}
|
void BezierInterpol(Coon_BezierCoeff& C1,
|
Coon_BezierCoeff& C2,
|
Coon_BezierCoeff& D1,
|
Coon_BezierCoeff& D2) {
|
a = (D1.a + D2.a) / 2;
|
b = (D1.b + D2.b) / 2;
|
c = (D1.c + D2.c) / 2 - (C1.a / 8 + C1.b / 4 + C1.c / 2) +
|
(C2.a / 8 + C2.b / 4) + (-C1.d + D2.d) / 2 - (C2.a + C2.b) / 2;
|
d = C1.a / 8 + C1.b / 4 + C1.c / 2 + C1.d;
|
}
|
float Distance() {
|
float dis = a + b + c;
|
return dis < 0 ? -dis : dis;
|
}
|
};
|
|
struct Coon_Bezier {
|
Coon_BezierCoeff x, y;
|
void FromPoints(float x0,
|
float y0,
|
float x1,
|
float y1,
|
float x2,
|
float y2,
|
float x3,
|
float y3) {
|
x.FromPoints(x0, x1, x2, x3);
|
y.FromPoints(y0, y1, y2, y3);
|
}
|
|
Coon_Bezier first_half() {
|
Coon_Bezier result;
|
result.x = x.first_half();
|
result.y = y.first_half();
|
return result;
|
}
|
|
Coon_Bezier second_half() {
|
Coon_Bezier result;
|
result.x = x.second_half();
|
result.y = y.second_half();
|
return result;
|
}
|
|
void BezierInterpol(Coon_Bezier& C1,
|
Coon_Bezier& C2,
|
Coon_Bezier& D1,
|
Coon_Bezier& D2) {
|
x.BezierInterpol(C1.x, C2.x, D1.x, D2.x);
|
y.BezierInterpol(C1.y, C2.y, D1.y, D2.y);
|
}
|
|
void GetPoints(std::vector<FX_PATHPOINT>& pPoints, size_t start_idx) {
|
float p[4];
|
int i;
|
x.GetPoints(p);
|
for (i = 0; i < 4; i++)
|
pPoints[start_idx + i].m_Point.x = p[i];
|
|
y.GetPoints(p);
|
for (i = 0; i < 4; i++)
|
pPoints[start_idx + i].m_Point.y = p[i];
|
}
|
|
void GetPointsReverse(std::vector<FX_PATHPOINT>& pPoints, size_t start_idx) {
|
float p[4];
|
int i;
|
x.GetPointsReverse(p);
|
for (i = 0; i < 4; i++)
|
pPoints[i + start_idx].m_Point.x = p[i];
|
|
y.GetPointsReverse(p);
|
for (i = 0; i < 4; i++)
|
pPoints[i + start_idx].m_Point.y = p[i];
|
}
|
|
float Distance() { return x.Distance() + y.Distance(); }
|
};
|
|
int Interpolate(int p1, int p2, int delta1, int delta2, bool* overflow) {
|
pdfium::base::CheckedNumeric<int> p = p2;
|
p -= p1;
|
p *= delta1;
|
p /= delta2;
|
p += p1;
|
if (!p.IsValid())
|
*overflow = true;
|
return p.ValueOrDefault(0);
|
}
|
|
int BiInterpolImpl(int c0,
|
int c1,
|
int c2,
|
int c3,
|
int x,
|
int y,
|
int x_scale,
|
int y_scale,
|
bool* overflow) {
|
int x1 = Interpolate(c0, c3, x, x_scale, overflow);
|
int x2 = Interpolate(c1, c2, x, x_scale, overflow);
|
return Interpolate(x1, x2, y, y_scale, overflow);
|
}
|
|
struct Coon_Color {
|
Coon_Color() { memset(comp, 0, sizeof(int) * 3); }
|
int comp[3];
|
|
// Returns true if successful, false if overflow detected.
|
bool BiInterpol(Coon_Color colors[4],
|
int x,
|
int y,
|
int x_scale,
|
int y_scale) {
|
bool overflow = false;
|
for (int i = 0; i < 3; i++) {
|
comp[i] = BiInterpolImpl(colors[0].comp[i], colors[1].comp[i],
|
colors[2].comp[i], colors[3].comp[i], x, y,
|
x_scale, y_scale, &overflow);
|
}
|
return !overflow;
|
}
|
|
int Distance(Coon_Color& o) {
|
return std::max({abs(comp[0] - o.comp[0]), abs(comp[1] - o.comp[1]),
|
abs(comp[2] - o.comp[2])});
|
}
|
};
|
|
#define COONCOLOR_THRESHOLD 4
|
struct CPDF_PatchDrawer {
|
Coon_Color patch_colors[4];
|
int max_delta;
|
CFX_PathData path;
|
CFX_RenderDevice* pDevice;
|
int fill_mode;
|
int alpha;
|
void Draw(int x_scale,
|
int y_scale,
|
int left,
|
int bottom,
|
Coon_Bezier C1,
|
Coon_Bezier C2,
|
Coon_Bezier D1,
|
Coon_Bezier D2) {
|
bool bSmall = C1.Distance() < 2 && C2.Distance() < 2 && D1.Distance() < 2 &&
|
D2.Distance() < 2;
|
Coon_Color div_colors[4];
|
int d_bottom = 0;
|
int d_left = 0;
|
int d_top = 0;
|
int d_right = 0;
|
if (!div_colors[0].BiInterpol(patch_colors, left, bottom, x_scale,
|
y_scale)) {
|
return;
|
}
|
if (!bSmall) {
|
if (!div_colors[1].BiInterpol(patch_colors, left, bottom + 1, x_scale,
|
y_scale)) {
|
return;
|
}
|
if (!div_colors[2].BiInterpol(patch_colors, left + 1, bottom + 1, x_scale,
|
y_scale)) {
|
return;
|
}
|
if (!div_colors[3].BiInterpol(patch_colors, left + 1, bottom, x_scale,
|
y_scale)) {
|
return;
|
}
|
d_bottom = div_colors[3].Distance(div_colors[0]);
|
d_left = div_colors[1].Distance(div_colors[0]);
|
d_top = div_colors[1].Distance(div_colors[2]);
|
d_right = div_colors[2].Distance(div_colors[3]);
|
}
|
|
if (bSmall ||
|
(d_bottom < COONCOLOR_THRESHOLD && d_left < COONCOLOR_THRESHOLD &&
|
d_top < COONCOLOR_THRESHOLD && d_right < COONCOLOR_THRESHOLD)) {
|
std::vector<FX_PATHPOINT>& pPoints = path.GetPoints();
|
C1.GetPoints(pPoints, 0);
|
D2.GetPoints(pPoints, 3);
|
C2.GetPointsReverse(pPoints, 6);
|
D1.GetPointsReverse(pPoints, 9);
|
int fillFlags = FXFILL_WINDING | FXFILL_FULLCOVER;
|
if (fill_mode & RENDER_NOPATHSMOOTH) {
|
fillFlags |= FXFILL_NOPATHSMOOTH;
|
}
|
pDevice->DrawPath(
|
&path, nullptr, nullptr,
|
FXARGB_MAKE(alpha, div_colors[0].comp[0], div_colors[0].comp[1],
|
div_colors[0].comp[2]),
|
0, fillFlags);
|
} else {
|
if (d_bottom < COONCOLOR_THRESHOLD && d_top < COONCOLOR_THRESHOLD) {
|
Coon_Bezier m1;
|
m1.BezierInterpol(D1, D2, C1, C2);
|
y_scale *= 2;
|
bottom *= 2;
|
Draw(x_scale, y_scale, left, bottom, C1, m1, D1.first_half(),
|
D2.first_half());
|
Draw(x_scale, y_scale, left, bottom + 1, m1, C2, D1.second_half(),
|
D2.second_half());
|
} else if (d_left < COONCOLOR_THRESHOLD &&
|
d_right < COONCOLOR_THRESHOLD) {
|
Coon_Bezier m2;
|
m2.BezierInterpol(C1, C2, D1, D2);
|
x_scale *= 2;
|
left *= 2;
|
Draw(x_scale, y_scale, left, bottom, C1.first_half(), C2.first_half(),
|
D1, m2);
|
Draw(x_scale, y_scale, left + 1, bottom, C1.second_half(),
|
C2.second_half(), m2, D2);
|
} else {
|
Coon_Bezier m1, m2;
|
m1.BezierInterpol(D1, D2, C1, C2);
|
m2.BezierInterpol(C1, C2, D1, D2);
|
Coon_Bezier m1f = m1.first_half();
|
Coon_Bezier m1s = m1.second_half();
|
Coon_Bezier m2f = m2.first_half();
|
Coon_Bezier m2s = m2.second_half();
|
x_scale *= 2;
|
y_scale *= 2;
|
left *= 2;
|
bottom *= 2;
|
Draw(x_scale, y_scale, left, bottom, C1.first_half(), m1f,
|
D1.first_half(), m2f);
|
Draw(x_scale, y_scale, left, bottom + 1, m1f, C2.first_half(),
|
D1.second_half(), m2s);
|
Draw(x_scale, y_scale, left + 1, bottom, C1.second_half(), m1s, m2f,
|
D2.first_half());
|
Draw(x_scale, y_scale, left + 1, bottom + 1, m1s, C2.second_half(), m2s,
|
D2.second_half());
|
}
|
}
|
}
|
};
|
|
void DrawCoonPatchMeshes(
|
ShadingType type,
|
const RetainPtr<CFX_DIBitmap>& pBitmap,
|
CFX_Matrix* pObject2Bitmap,
|
CPDF_Stream* pShadingStream,
|
const std::vector<std::unique_ptr<CPDF_Function>>& funcs,
|
CPDF_ColorSpace* pCS,
|
int fill_mode,
|
int alpha) {
|
ASSERT(pBitmap->GetFormat() == FXDIB_Argb);
|
ASSERT(type == kCoonsPatchMeshShading ||
|
type == kTensorProductPatchMeshShading);
|
|
CFX_DefaultRenderDevice device;
|
device.Attach(pBitmap, false, nullptr, false);
|
CPDF_MeshStream stream(type, funcs, pShadingStream, pCS);
|
if (!stream.Load())
|
return;
|
|
CPDF_PatchDrawer patch;
|
patch.alpha = alpha;
|
patch.pDevice = &device;
|
patch.fill_mode = fill_mode;
|
|
for (int i = 0; i < 13; i++) {
|
patch.path.AppendPoint(
|
CFX_PointF(), i == 0 ? FXPT_TYPE::MoveTo : FXPT_TYPE::BezierTo, false);
|
}
|
|
CFX_PointF coords[16];
|
int point_count = type == kTensorProductPatchMeshShading ? 16 : 12;
|
while (!stream.BitStream()->IsEOF()) {
|
if (!stream.CanReadFlag())
|
break;
|
uint32_t flag = stream.ReadFlag();
|
int iStartPoint = 0, iStartColor = 0, i = 0;
|
if (flag) {
|
iStartPoint = 4;
|
iStartColor = 2;
|
CFX_PointF tempCoords[4];
|
for (i = 0; i < 4; i++) {
|
tempCoords[i] = coords[(flag * 3 + i) % 12];
|
}
|
memcpy(coords, tempCoords, sizeof(tempCoords));
|
Coon_Color tempColors[2];
|
tempColors[0] = patch.patch_colors[flag];
|
tempColors[1] = patch.patch_colors[(flag + 1) % 4];
|
memcpy(patch.patch_colors, tempColors, sizeof(Coon_Color) * 2);
|
}
|
for (i = iStartPoint; i < point_count; i++) {
|
if (!stream.CanReadCoords())
|
break;
|
coords[i] = pObject2Bitmap->Transform(stream.ReadCoords());
|
}
|
|
for (i = iStartColor; i < 4; i++) {
|
if (!stream.CanReadColor())
|
break;
|
|
float r;
|
float g;
|
float b;
|
std::tie(r, g, b) = stream.ReadColor();
|
|
patch.patch_colors[i].comp[0] = (int32_t)(r * 255);
|
patch.patch_colors[i].comp[1] = (int32_t)(g * 255);
|
patch.patch_colors[i].comp[2] = (int32_t)(b * 255);
|
}
|
CFX_FloatRect bbox = CFX_FloatRect::GetBBox(coords, point_count);
|
if (bbox.right <= 0 || bbox.left >= (float)pBitmap->GetWidth() ||
|
bbox.top <= 0 || bbox.bottom >= (float)pBitmap->GetHeight()) {
|
continue;
|
}
|
Coon_Bezier C1, C2, D1, D2;
|
C1.FromPoints(coords[0].x, coords[0].y, coords[11].x, coords[11].y,
|
coords[10].x, coords[10].y, coords[9].x, coords[9].y);
|
C2.FromPoints(coords[3].x, coords[3].y, coords[4].x, coords[4].y,
|
coords[5].x, coords[5].y, coords[6].x, coords[6].y);
|
D1.FromPoints(coords[0].x, coords[0].y, coords[1].x, coords[1].y,
|
coords[2].x, coords[2].y, coords[3].x, coords[3].y);
|
D2.FromPoints(coords[9].x, coords[9].y, coords[8].x, coords[8].y,
|
coords[7].x, coords[7].y, coords[6].x, coords[6].y);
|
patch.Draw(1, 1, 0, 0, C1, C2, D1, D2);
|
}
|
}
|
|
RetainPtr<CFX_DIBitmap> DrawPatternBitmap(CPDF_Document* pDoc,
|
CPDF_PageRenderCache* pCache,
|
CPDF_TilingPattern* pPattern,
|
const CFX_Matrix* pObject2Device,
|
int width,
|
int height,
|
int flags) {
|
auto pBitmap = pdfium::MakeRetain<CFX_DIBitmap>();
|
if (!pBitmap->Create(width, height,
|
pPattern->colored() ? FXDIB_Argb : FXDIB_8bppMask)) {
|
return nullptr;
|
}
|
CFX_DefaultRenderDevice bitmap_device;
|
bitmap_device.Attach(pBitmap, false, nullptr, false);
|
pBitmap->Clear(0);
|
CFX_FloatRect cell_bbox =
|
pPattern->pattern_to_form()->TransformRect(pPattern->bbox());
|
cell_bbox = pObject2Device->TransformRect(cell_bbox);
|
CFX_FloatRect bitmap_rect(0.0f, 0.0f, (float)width, (float)height);
|
CFX_Matrix mtAdjust;
|
mtAdjust.MatchRect(bitmap_rect, cell_bbox);
|
|
CFX_Matrix mtPattern2Bitmap = *pObject2Device;
|
mtPattern2Bitmap.Concat(mtAdjust);
|
CPDF_RenderOptions options;
|
if (!pPattern->colored())
|
options.SetColorMode(CPDF_RenderOptions::kAlpha);
|
|
flags |= RENDER_FORCE_HALFTONE;
|
options.SetFlags(flags);
|
|
CPDF_RenderContext context(pDoc, pCache);
|
context.AppendLayer(pPattern->form(), &mtPattern2Bitmap);
|
context.Render(&bitmap_device, &options, nullptr);
|
#if defined _SKIA_SUPPORT_PATHS_
|
bitmap_device.Flush(true);
|
pBitmap->UnPreMultiply();
|
#endif
|
return pBitmap;
|
}
|
|
bool IsAvailableMatrix(const CFX_Matrix& matrix) {
|
if (matrix.a == 0 || matrix.d == 0)
|
return matrix.b != 0 && matrix.c != 0;
|
|
if (matrix.b == 0 || matrix.c == 0)
|
return matrix.a != 0 && matrix.d != 0;
|
|
return true;
|
}
|
|
bool MissingFillColor(const CPDF_ColorState* pColorState) {
|
return !pColorState->HasRef() || pColorState->GetFillColor()->IsNull();
|
}
|
|
bool MissingStrokeColor(const CPDF_ColorState* pColorState) {
|
return !pColorState->HasRef() || pColorState->GetStrokeColor()->IsNull();
|
}
|
|
bool Type3CharMissingFillColor(const CPDF_Type3Char* pChar,
|
const CPDF_ColorState* pColorState) {
|
return pChar && (!pChar->colored() ||
|
(pChar->colored() && MissingFillColor(pColorState)));
|
}
|
|
bool Type3CharMissingStrokeColor(const CPDF_Type3Char* pChar,
|
const CPDF_ColorState* pColorState) {
|
return pChar && (!pChar->colored() ||
|
(pChar->colored() && MissingStrokeColor(pColorState)));
|
}
|
|
} // namespace
|
|
// static
|
int CPDF_RenderStatus::s_CurrentRecursionDepth = 0;
|
|
CPDF_RenderStatus::CPDF_RenderStatus()
|
: m_pFormResource(nullptr),
|
m_pPageResource(nullptr),
|
m_pContext(nullptr),
|
m_bStopped(false),
|
m_pDevice(nullptr),
|
m_pCurObj(nullptr),
|
m_pStopObj(nullptr),
|
m_bPrint(false),
|
m_iTransparency(0),
|
m_bDropObjects(false),
|
m_bStdCS(false),
|
m_GroupFamily(0),
|
m_bLoadMask(false),
|
m_pType3Char(nullptr),
|
m_T3FillColor(0),
|
m_curBlend(FXDIB_BLEND_NORMAL) {}
|
|
CPDF_RenderStatus::~CPDF_RenderStatus() {}
|
|
bool CPDF_RenderStatus::Initialize(CPDF_RenderContext* pContext,
|
CFX_RenderDevice* pDevice,
|
const CFX_Matrix* pDeviceMatrix,
|
const CPDF_PageObject* pStopObj,
|
const CPDF_RenderStatus* pParentState,
|
const CPDF_GraphicStates* pInitialStates,
|
const CPDF_RenderOptions* pOptions,
|
int transparency,
|
bool bDropObjects,
|
CPDF_Dictionary* pFormResource,
|
bool bStdCS,
|
CPDF_Type3Char* pType3Char,
|
FX_ARGB fill_color,
|
uint32_t GroupFamily,
|
bool bLoadMask) {
|
m_pContext = pContext;
|
m_pDevice = pDevice;
|
m_bPrint = m_pDevice->GetDeviceClass() != FXDC_DISPLAY;
|
if (pDeviceMatrix) {
|
m_DeviceMatrix = *pDeviceMatrix;
|
}
|
m_pStopObj = pStopObj;
|
if (pOptions) {
|
m_Options = *pOptions;
|
}
|
m_bDropObjects = bDropObjects;
|
m_bStdCS = bStdCS;
|
m_T3FillColor = fill_color;
|
m_pType3Char = pType3Char;
|
m_GroupFamily = GroupFamily;
|
m_bLoadMask = bLoadMask;
|
m_pFormResource = pFormResource;
|
m_pPageResource = m_pContext->GetPageResources();
|
if (pInitialStates && !m_pType3Char) {
|
m_InitialStates.CopyStates(*pInitialStates);
|
if (pParentState) {
|
if (!m_InitialStates.m_ColorState.HasFillColor()) {
|
m_InitialStates.m_ColorState.SetFillRGB(
|
pParentState->m_InitialStates.m_ColorState.GetFillRGB());
|
m_InitialStates.m_ColorState.GetMutableFillColor()->Copy(
|
pParentState->m_InitialStates.m_ColorState.GetFillColor());
|
}
|
if (!m_InitialStates.m_ColorState.HasStrokeColor()) {
|
m_InitialStates.m_ColorState.SetStrokeRGB(
|
pParentState->m_InitialStates.m_ColorState.GetFillRGB());
|
m_InitialStates.m_ColorState.GetMutableStrokeColor()->Copy(
|
pParentState->m_InitialStates.m_ColorState.GetStrokeColor());
|
}
|
}
|
} else {
|
m_InitialStates.DefaultStates();
|
}
|
m_pImageRenderer.reset();
|
m_iTransparency = transparency;
|
return true;
|
}
|
|
void CPDF_RenderStatus::RenderObjectList(
|
const CPDF_PageObjectHolder* pObjectHolder,
|
const CFX_Matrix* pObj2Device) {
|
#if defined _SKIA_SUPPORT_
|
DebugVerifyDeviceIsPreMultiplied();
|
#endif
|
CFX_FloatRect clip_rect = pObj2Device->GetInverse().TransformRect(
|
CFX_FloatRect(m_pDevice->GetClipBox()));
|
for (const auto& pCurObj : *pObjectHolder->GetPageObjectList()) {
|
if (pCurObj.get() == m_pStopObj) {
|
m_bStopped = true;
|
return;
|
}
|
if (!pCurObj)
|
continue;
|
|
if (pCurObj->m_Left > clip_rect.right ||
|
pCurObj->m_Right < clip_rect.left ||
|
pCurObj->m_Bottom > clip_rect.top ||
|
pCurObj->m_Top < clip_rect.bottom) {
|
continue;
|
}
|
RenderSingleObject(pCurObj.get(), pObj2Device);
|
if (m_bStopped)
|
return;
|
}
|
#if defined _SKIA_SUPPORT_
|
DebugVerifyDeviceIsPreMultiplied();
|
#endif
|
}
|
|
void CPDF_RenderStatus::RenderSingleObject(CPDF_PageObject* pObj,
|
const CFX_Matrix* pObj2Device) {
|
#if defined _SKIA_SUPPORT_
|
DebugVerifyDeviceIsPreMultiplied();
|
#endif
|
AutoRestorer<int> restorer(&s_CurrentRecursionDepth);
|
if (++s_CurrentRecursionDepth > kRenderMaxRecursionDepth) {
|
return;
|
}
|
m_pCurObj = pObj;
|
if (m_Options.GetOCContext() && pObj->m_ContentMark.HasRef()) {
|
if (!m_Options.GetOCContext()->CheckObjectVisible(pObj)) {
|
return;
|
}
|
}
|
ProcessClipPath(pObj->m_ClipPath, pObj2Device);
|
if (ProcessTransparency(pObj, pObj2Device)) {
|
return;
|
}
|
ProcessObjectNoClip(pObj, pObj2Device);
|
#if defined _SKIA_SUPPORT_
|
DebugVerifyDeviceIsPreMultiplied();
|
#endif
|
}
|
|
bool CPDF_RenderStatus::ContinueSingleObject(CPDF_PageObject* pObj,
|
const CFX_Matrix* pObj2Device,
|
IFX_PauseIndicator* pPause) {
|
if (m_pImageRenderer) {
|
if (m_pImageRenderer->Continue(pPause))
|
return true;
|
|
if (!m_pImageRenderer->GetResult())
|
DrawObjWithBackground(pObj, pObj2Device);
|
m_pImageRenderer.reset();
|
return false;
|
}
|
|
m_pCurObj = pObj;
|
if (m_Options.GetOCContext() && pObj->m_ContentMark.HasRef() &&
|
!m_Options.GetOCContext()->CheckObjectVisible(pObj)) {
|
return false;
|
}
|
|
ProcessClipPath(pObj->m_ClipPath, pObj2Device);
|
if (ProcessTransparency(pObj, pObj2Device))
|
return false;
|
|
if (!pObj->IsImage()) {
|
ProcessObjectNoClip(pObj, pObj2Device);
|
return false;
|
}
|
|
m_pImageRenderer = pdfium::MakeUnique<CPDF_ImageRenderer>();
|
if (!m_pImageRenderer->Start(this, pObj->AsImage(), pObj2Device, false,
|
FXDIB_BLEND_NORMAL)) {
|
if (!m_pImageRenderer->GetResult())
|
DrawObjWithBackground(pObj, pObj2Device);
|
m_pImageRenderer.reset();
|
return false;
|
}
|
return ContinueSingleObject(pObj, pObj2Device, pPause);
|
}
|
|
bool CPDF_RenderStatus::GetObjectClippedRect(const CPDF_PageObject* pObj,
|
const CFX_Matrix* pObj2Device,
|
bool bLogical,
|
FX_RECT& rect) const {
|
rect = pObj->GetBBox(pObj2Device);
|
FX_RECT rtClip = m_pDevice->GetClipBox();
|
if (!bLogical) {
|
CFX_Matrix dCTM = m_pDevice->GetCTM();
|
float a = fabs(dCTM.a);
|
float d = fabs(dCTM.d);
|
if (a != 1.0f || d != 1.0f) {
|
rect.right = rect.left + (int32_t)ceil((float)rect.Width() * a);
|
rect.bottom = rect.top + (int32_t)ceil((float)rect.Height() * d);
|
rtClip.right = rtClip.left + (int32_t)ceil((float)rtClip.Width() * a);
|
rtClip.bottom = rtClip.top + (int32_t)ceil((float)rtClip.Height() * d);
|
}
|
}
|
rect.Intersect(rtClip);
|
return rect.IsEmpty();
|
}
|
|
void CPDF_RenderStatus::ProcessObjectNoClip(CPDF_PageObject* pObj,
|
const CFX_Matrix* pObj2Device) {
|
#if defined _SKIA_SUPPORT_
|
DebugVerifyDeviceIsPreMultiplied();
|
#endif
|
bool bRet = false;
|
switch (pObj->GetType()) {
|
case CPDF_PageObject::TEXT:
|
bRet = ProcessText(pObj->AsText(), pObj2Device, nullptr);
|
break;
|
case CPDF_PageObject::PATH:
|
bRet = ProcessPath(pObj->AsPath(), pObj2Device);
|
break;
|
case CPDF_PageObject::IMAGE:
|
bRet = ProcessImage(pObj->AsImage(), pObj2Device);
|
break;
|
case CPDF_PageObject::SHADING:
|
ProcessShading(pObj->AsShading(), pObj2Device);
|
return;
|
case CPDF_PageObject::FORM:
|
bRet = ProcessForm(pObj->AsForm(), pObj2Device);
|
break;
|
}
|
if (!bRet)
|
DrawObjWithBackground(pObj, pObj2Device);
|
#if defined _SKIA_SUPPORT_
|
DebugVerifyDeviceIsPreMultiplied();
|
#endif
|
}
|
|
bool CPDF_RenderStatus::DrawObjWithBlend(CPDF_PageObject* pObj,
|
const CFX_Matrix* pObj2Device) {
|
bool bRet = false;
|
switch (pObj->GetType()) {
|
case CPDF_PageObject::PATH:
|
bRet = ProcessPath(pObj->AsPath(), pObj2Device);
|
break;
|
case CPDF_PageObject::IMAGE:
|
bRet = ProcessImage(pObj->AsImage(), pObj2Device);
|
break;
|
case CPDF_PageObject::FORM:
|
bRet = ProcessForm(pObj->AsForm(), pObj2Device);
|
break;
|
default:
|
break;
|
}
|
return bRet;
|
}
|
|
void CPDF_RenderStatus::GetScaledMatrix(CFX_Matrix& matrix) const {
|
CFX_Matrix dCTM = m_pDevice->GetCTM();
|
matrix.a *= fabs(dCTM.a);
|
matrix.d *= fabs(dCTM.d);
|
}
|
|
void CPDF_RenderStatus::DrawObjWithBackground(CPDF_PageObject* pObj,
|
const CFX_Matrix* pObj2Device) {
|
FX_RECT rect;
|
if (GetObjectClippedRect(pObj, pObj2Device, false, rect)) {
|
return;
|
}
|
int res = 300;
|
if (pObj->IsImage() &&
|
m_pDevice->GetDeviceCaps(FXDC_DEVICE_CLASS) == FXDC_PRINTER) {
|
res = 0;
|
}
|
CPDF_ScaledRenderBuffer buffer;
|
if (!buffer.Initialize(m_pContext.Get(), m_pDevice, rect, pObj, &m_Options,
|
res)) {
|
return;
|
}
|
CFX_Matrix matrix = *pObj2Device;
|
matrix.Concat(*buffer.GetMatrix());
|
GetScaledMatrix(matrix);
|
CPDF_Dictionary* pFormResource = nullptr;
|
const CPDF_FormObject* pFormObj = pObj->AsForm();
|
if (pFormObj) {
|
const auto& pFormDict = pFormObj->form()->m_pFormDict;
|
if (pFormDict)
|
pFormResource = pFormDict->GetDictFor("Resources");
|
}
|
CPDF_RenderStatus status;
|
status.Initialize(m_pContext.Get(), buffer.GetDevice(), buffer.GetMatrix(),
|
nullptr, nullptr, nullptr, &m_Options, m_iTransparency,
|
m_bDropObjects, pFormResource);
|
status.RenderSingleObject(pObj, &matrix);
|
buffer.OutputToDevice();
|
}
|
|
bool CPDF_RenderStatus::ProcessForm(const CPDF_FormObject* pFormObj,
|
const CFX_Matrix* pObj2Device) {
|
#if defined _SKIA_SUPPORT_
|
DebugVerifyDeviceIsPreMultiplied();
|
#endif
|
CPDF_Dictionary* pOC = pFormObj->form()->m_pFormDict->GetDictFor("OC");
|
if (pOC && m_Options.GetOCContext() &&
|
!m_Options.GetOCContext()->CheckOCGVisible(pOC)) {
|
return true;
|
}
|
CFX_Matrix matrix = pFormObj->form_matrix();
|
matrix.Concat(*pObj2Device);
|
const auto& pFormDict = pFormObj->form()->m_pFormDict;
|
CPDF_Dictionary* pResources =
|
pFormDict ? pFormDict->GetDictFor("Resources") : nullptr;
|
CPDF_RenderStatus status;
|
status.Initialize(m_pContext.Get(), m_pDevice, nullptr, m_pStopObj, this,
|
pFormObj, &m_Options, m_iTransparency, m_bDropObjects,
|
pResources, false);
|
status.m_curBlend = m_curBlend;
|
{
|
CFX_RenderDevice::StateRestorer restorer(m_pDevice);
|
status.RenderObjectList(pFormObj->form(), &matrix);
|
m_bStopped = status.m_bStopped;
|
}
|
#if defined _SKIA_SUPPORT_
|
DebugVerifyDeviceIsPreMultiplied();
|
#endif
|
return true;
|
}
|
|
bool CPDF_RenderStatus::ProcessPath(CPDF_PathObject* pPathObj,
|
const CFX_Matrix* pObj2Device) {
|
int FillType = pPathObj->m_FillType;
|
bool bStroke = pPathObj->m_bStroke;
|
ProcessPathPattern(pPathObj, pObj2Device, FillType, bStroke);
|
if (FillType == 0 && !bStroke)
|
return true;
|
|
uint32_t fill_argb = FillType ? GetFillArgb(pPathObj) : 0;
|
uint32_t stroke_argb = bStroke ? GetStrokeArgb(pPathObj) : 0;
|
CFX_Matrix path_matrix = pPathObj->m_Matrix;
|
path_matrix.Concat(*pObj2Device);
|
if (!IsAvailableMatrix(path_matrix))
|
return true;
|
|
if (FillType && (m_Options.HasFlag(RENDER_RECT_AA)))
|
FillType |= FXFILL_RECT_AA;
|
if (m_Options.HasFlag(RENDER_FILL_FULLCOVER))
|
FillType |= FXFILL_FULLCOVER;
|
if (m_Options.HasFlag(RENDER_NOPATHSMOOTH))
|
FillType |= FXFILL_NOPATHSMOOTH;
|
if (bStroke)
|
FillType |= FX_FILL_STROKE;
|
|
const CPDF_PageObject* pPageObj =
|
static_cast<const CPDF_PageObject*>(pPathObj);
|
if (pPageObj->m_GeneralState.GetStrokeAdjust())
|
FillType |= FX_STROKE_ADJUST;
|
if (m_pType3Char)
|
FillType |= FX_FILL_TEXT_MODE;
|
|
CFX_GraphState graphState = pPathObj->m_GraphState;
|
if (m_Options.HasFlag(RENDER_THINLINE))
|
graphState.SetLineWidth(0);
|
return m_pDevice->DrawPathWithBlend(
|
pPathObj->m_Path.GetObject(), &path_matrix, graphState.GetObject(),
|
fill_argb, stroke_argb, FillType, m_curBlend);
|
}
|
|
RetainPtr<CPDF_TransferFunc> CPDF_RenderStatus::GetTransferFunc(
|
CPDF_Object* pObj) const {
|
ASSERT(pObj);
|
CPDF_DocRenderData* pDocCache = m_pContext->GetDocument()->GetRenderData();
|
return pDocCache ? pDocCache->GetTransferFunc(pObj) : nullptr;
|
}
|
|
FX_ARGB CPDF_RenderStatus::GetFillArgb(CPDF_PageObject* pObj,
|
bool bType3) const {
|
const CPDF_ColorState* pColorState = &pObj->m_ColorState;
|
if (!bType3 && Type3CharMissingFillColor(m_pType3Char.Get(), pColorState))
|
return m_T3FillColor;
|
|
if (MissingFillColor(pColorState))
|
pColorState = &m_InitialStates.m_ColorState;
|
|
FX_COLORREF rgb = pColorState->GetFillRGB();
|
if (rgb == (uint32_t)-1)
|
return 0;
|
|
int32_t alpha =
|
static_cast<int32_t>((pObj->m_GeneralState.GetFillAlpha() * 255));
|
if (pObj->m_GeneralState.GetTR()) {
|
if (!pObj->m_GeneralState.GetTransferFunc()) {
|
pObj->m_GeneralState.SetTransferFunc(
|
GetTransferFunc(pObj->m_GeneralState.GetTR()));
|
}
|
if (pObj->m_GeneralState.GetTransferFunc())
|
rgb = pObj->m_GeneralState.GetTransferFunc()->TranslateColor(rgb);
|
}
|
return m_Options.TranslateColor(ArgbEncode(alpha, rgb));
|
}
|
|
FX_ARGB CPDF_RenderStatus::GetStrokeArgb(CPDF_PageObject* pObj) const {
|
const CPDF_ColorState* pColorState = &pObj->m_ColorState;
|
if (Type3CharMissingStrokeColor(m_pType3Char.Get(), pColorState))
|
return m_T3FillColor;
|
|
if (MissingStrokeColor(pColorState))
|
pColorState = &m_InitialStates.m_ColorState;
|
|
FX_COLORREF rgb = pColorState->GetStrokeRGB();
|
if (rgb == (uint32_t)-1)
|
return 0;
|
|
int32_t alpha = static_cast<int32_t>(pObj->m_GeneralState.GetStrokeAlpha() *
|
255); // not rounded.
|
if (pObj->m_GeneralState.GetTR()) {
|
if (!pObj->m_GeneralState.GetTransferFunc()) {
|
pObj->m_GeneralState.SetTransferFunc(
|
GetTransferFunc(pObj->m_GeneralState.GetTR()));
|
}
|
if (pObj->m_GeneralState.GetTransferFunc())
|
rgb = pObj->m_GeneralState.GetTransferFunc()->TranslateColor(rgb);
|
}
|
return m_Options.TranslateColor(ArgbEncode(alpha, rgb));
|
}
|
|
void CPDF_RenderStatus::ProcessClipPath(const CPDF_ClipPath& ClipPath,
|
const CFX_Matrix* pObj2Device) {
|
if (!ClipPath.HasRef()) {
|
if (m_LastClipPath.HasRef()) {
|
m_pDevice->RestoreState(true);
|
m_LastClipPath.SetNull();
|
}
|
return;
|
}
|
if (m_LastClipPath == ClipPath)
|
return;
|
|
m_LastClipPath = ClipPath;
|
m_pDevice->RestoreState(true);
|
for (size_t i = 0; i < ClipPath.GetPathCount(); ++i) {
|
const CFX_PathData* pPathData = ClipPath.GetPath(i).GetObject();
|
if (!pPathData)
|
continue;
|
|
if (pPathData->GetPoints().empty()) {
|
CFX_PathData EmptyPath;
|
EmptyPath.AppendRect(-1, -1, 0, 0);
|
m_pDevice->SetClip_PathFill(&EmptyPath, nullptr, FXFILL_WINDING);
|
} else {
|
m_pDevice->SetClip_PathFill(pPathData, pObj2Device,
|
ClipPath.GetClipType(i));
|
}
|
}
|
|
if (ClipPath.GetTextCount() == 0)
|
return;
|
|
if (m_pDevice->GetDeviceClass() == FXDC_DISPLAY &&
|
!(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)) {
|
return;
|
}
|
|
std::unique_ptr<CFX_PathData> pTextClippingPath;
|
for (size_t i = 0; i < ClipPath.GetTextCount(); ++i) {
|
CPDF_TextObject* pText = ClipPath.GetText(i);
|
if (pText) {
|
if (!pTextClippingPath)
|
pTextClippingPath = pdfium::MakeUnique<CFX_PathData>();
|
ProcessText(pText, pObj2Device, pTextClippingPath.get());
|
continue;
|
}
|
|
if (!pTextClippingPath)
|
continue;
|
|
int fill_mode = FXFILL_WINDING;
|
if (m_Options.HasFlag(RENDER_NOTEXTSMOOTH))
|
fill_mode |= FXFILL_NOPATHSMOOTH;
|
m_pDevice->SetClip_PathFill(pTextClippingPath.get(), nullptr, fill_mode);
|
pTextClippingPath.reset();
|
}
|
}
|
|
bool CPDF_RenderStatus::SelectClipPath(const CPDF_PathObject* pPathObj,
|
const CFX_Matrix* pObj2Device,
|
bool bStroke) {
|
CFX_Matrix path_matrix = pPathObj->m_Matrix;
|
path_matrix.Concat(*pObj2Device);
|
if (bStroke) {
|
CFX_GraphState graphState = pPathObj->m_GraphState;
|
if (m_Options.HasFlag(RENDER_THINLINE))
|
graphState.SetLineWidth(0);
|
return m_pDevice->SetClip_PathStroke(pPathObj->m_Path.GetObject(),
|
&path_matrix, graphState.GetObject());
|
}
|
int fill_mode = pPathObj->m_FillType;
|
if (m_Options.HasFlag(RENDER_NOPATHSMOOTH)) {
|
fill_mode |= FXFILL_NOPATHSMOOTH;
|
}
|
return m_pDevice->SetClip_PathFill(pPathObj->m_Path.GetObject(), &path_matrix,
|
fill_mode);
|
}
|
|
bool CPDF_RenderStatus::ProcessTransparency(CPDF_PageObject* pPageObj,
|
const CFX_Matrix* pObj2Device) {
|
#if defined _SKIA_SUPPORT_
|
DebugVerifyDeviceIsPreMultiplied();
|
#endif
|
int blend_type = pPageObj->m_GeneralState.GetBlendType();
|
if (blend_type == FXDIB_BLEND_UNSUPPORTED)
|
return true;
|
|
CPDF_Dictionary* pSMaskDict =
|
ToDictionary(pPageObj->m_GeneralState.GetSoftMask());
|
if (pSMaskDict) {
|
if (pPageObj->IsImage() &&
|
pPageObj->AsImage()->GetImage()->GetDict()->KeyExist("SMask")) {
|
pSMaskDict = nullptr;
|
}
|
}
|
CPDF_Dictionary* pFormResource = nullptr;
|
float group_alpha = 1.0f;
|
int iTransparency = m_iTransparency;
|
bool bGroupTransparent = false;
|
const CPDF_FormObject* pFormObj = pPageObj->AsForm();
|
if (pFormObj) {
|
group_alpha = pFormObj->m_GeneralState.GetFillAlpha();
|
iTransparency = pFormObj->form()->m_iTransparency;
|
bGroupTransparent = !!(iTransparency & PDFTRANS_ISOLATED);
|
const auto& pFormDict = pFormObj->form()->m_pFormDict;
|
if (pFormDict)
|
pFormResource = pFormDict->GetDictFor("Resources");
|
}
|
bool bTextClip =
|
(pPageObj->m_ClipPath.HasRef() &&
|
pPageObj->m_ClipPath.GetTextCount() > 0 &&
|
m_pDevice->GetDeviceClass() == FXDC_DISPLAY &&
|
!(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP));
|
if ((m_Options.HasFlag(RENDER_OVERPRINT)) && pPageObj->IsImage() &&
|
pPageObj->m_GeneralState.GetFillOP() &&
|
pPageObj->m_GeneralState.GetStrokeOP()) {
|
CPDF_Document* pDocument = nullptr;
|
CPDF_Page* pPage = nullptr;
|
if (m_pContext->GetPageCache()) {
|
pPage = m_pContext->GetPageCache()->GetPage();
|
pDocument = pPage->m_pDocument.Get();
|
} else {
|
pDocument = pPageObj->AsImage()->GetImage()->GetDocument();
|
}
|
CPDF_Dictionary* pPageResources =
|
pPage ? pPage->m_pPageResources.Get() : nullptr;
|
CPDF_Object* pCSObj = pPageObj->AsImage()
|
->GetImage()
|
->GetStream()
|
->GetDict()
|
->GetDirectObjectFor("ColorSpace");
|
CPDF_ColorSpace* pColorSpace =
|
pDocument->LoadColorSpace(pCSObj, pPageResources);
|
if (pColorSpace) {
|
int format = pColorSpace->GetFamily();
|
if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION ||
|
format == PDFCS_DEVICEN) {
|
blend_type = FXDIB_BLEND_DARKEN;
|
}
|
pDocument->GetPageData()->ReleaseColorSpace(pCSObj);
|
}
|
}
|
if (!pSMaskDict && group_alpha == 1.0f && blend_type == FXDIB_BLEND_NORMAL &&
|
!bTextClip && !bGroupTransparent) {
|
return false;
|
}
|
bool isolated = !!(iTransparency & PDFTRANS_ISOLATED);
|
if (m_bPrint) {
|
bool bRet = false;
|
int rendCaps = m_pDevice->GetRenderCaps();
|
if (!((iTransparency & PDFTRANS_ISOLATED) || pSMaskDict || bTextClip) &&
|
(rendCaps & FXRC_BLEND_MODE)) {
|
int oldBlend = m_curBlend;
|
m_curBlend = blend_type;
|
bRet = DrawObjWithBlend(pPageObj, pObj2Device);
|
m_curBlend = oldBlend;
|
}
|
if (!bRet) {
|
DrawObjWithBackground(pPageObj, pObj2Device);
|
}
|
return true;
|
}
|
FX_RECT rect = pPageObj->GetBBox(pObj2Device);
|
rect.Intersect(m_pDevice->GetClipBox());
|
if (rect.IsEmpty())
|
return true;
|
|
CFX_Matrix deviceCTM = m_pDevice->GetCTM();
|
float scaleX = fabs(deviceCTM.a);
|
float scaleY = fabs(deviceCTM.d);
|
int width = FXSYS_round((float)rect.Width() * scaleX);
|
int height = FXSYS_round((float)rect.Height() * scaleY);
|
CFX_DefaultRenderDevice bitmap_device;
|
RetainPtr<CFX_DIBitmap> oriDevice;
|
if (!isolated && (m_pDevice->GetRenderCaps() & FXRC_GET_BITS)) {
|
oriDevice = pdfium::MakeRetain<CFX_DIBitmap>();
|
if (!m_pDevice->CreateCompatibleBitmap(oriDevice, width, height))
|
return true;
|
m_pDevice->GetDIBits(oriDevice, rect.left, rect.top);
|
}
|
if (!bitmap_device.Create(width, height, FXDIB_Argb, oriDevice))
|
return true;
|
|
RetainPtr<CFX_DIBitmap> bitmap = bitmap_device.GetBitmap();
|
bitmap->Clear(0);
|
|
CFX_Matrix new_matrix = *pObj2Device;
|
new_matrix.Translate(-rect.left, -rect.top);
|
new_matrix.Scale(scaleX, scaleY);
|
|
RetainPtr<CFX_DIBitmap> pTextMask;
|
if (bTextClip) {
|
pTextMask = pdfium::MakeRetain<CFX_DIBitmap>();
|
if (!pTextMask->Create(width, height, FXDIB_8bppMask))
|
return true;
|
|
pTextMask->Clear(0);
|
CFX_DefaultRenderDevice text_device;
|
text_device.Attach(pTextMask, false, nullptr, false);
|
for (size_t i = 0; i < pPageObj->m_ClipPath.GetTextCount(); ++i) {
|
CPDF_TextObject* textobj = pPageObj->m_ClipPath.GetText(i);
|
if (!textobj)
|
break;
|
|
CFX_Matrix text_matrix = textobj->GetTextMatrix();
|
CPDF_TextRenderer::DrawTextPath(
|
&text_device, textobj->GetCharCodes(), textobj->GetCharPositions(),
|
textobj->m_TextState.GetFont(), textobj->m_TextState.GetFontSize(),
|
&text_matrix, &new_matrix, textobj->m_GraphState.GetObject(),
|
(FX_ARGB)-1, 0, nullptr, 0);
|
}
|
}
|
CPDF_RenderStatus bitmap_render;
|
bitmap_render.Initialize(m_pContext.Get(), &bitmap_device, nullptr,
|
m_pStopObj, nullptr, nullptr, &m_Options, 0,
|
m_bDropObjects, pFormResource, true);
|
bitmap_render.ProcessObjectNoClip(pPageObj, &new_matrix);
|
#if defined _SKIA_SUPPORT_PATHS_
|
bitmap_device.Flush(true);
|
bitmap->UnPreMultiply();
|
#endif
|
m_bStopped = bitmap_render.m_bStopped;
|
if (pSMaskDict) {
|
CFX_Matrix smask_matrix = *pPageObj->m_GeneralState.GetSMaskMatrix();
|
smask_matrix.Concat(*pObj2Device);
|
RetainPtr<CFX_DIBSource> pSMaskSource =
|
LoadSMask(pSMaskDict, &rect, &smask_matrix);
|
if (pSMaskSource)
|
bitmap->MultiplyAlpha(pSMaskSource);
|
}
|
if (pTextMask) {
|
bitmap->MultiplyAlpha(pTextMask);
|
pTextMask.Reset();
|
}
|
int32_t blitAlpha = 255;
|
if (iTransparency & PDFTRANS_GROUP && group_alpha != 1.0f) {
|
blitAlpha = (int32_t)(group_alpha * 255);
|
#ifndef _SKIA_SUPPORT_
|
bitmap->MultiplyAlpha(blitAlpha);
|
blitAlpha = 255;
|
#endif
|
}
|
iTransparency = m_iTransparency;
|
if (pPageObj->IsForm()) {
|
iTransparency |= PDFTRANS_GROUP;
|
}
|
CompositeDIBitmap(bitmap, rect.left, rect.top, 0, blitAlpha, blend_type,
|
iTransparency);
|
#if defined _SKIA_SUPPORT_
|
DebugVerifyDeviceIsPreMultiplied();
|
#endif
|
return true;
|
}
|
|
RetainPtr<CFX_DIBitmap> CPDF_RenderStatus::GetBackdrop(
|
const CPDF_PageObject* pObj,
|
const FX_RECT& rect,
|
bool bBackAlphaRequired,
|
int* left,
|
int* top) {
|
FX_RECT bbox = rect;
|
bbox.Intersect(m_pDevice->GetClipBox());
|
*left = bbox.left;
|
*top = bbox.top;
|
CFX_Matrix deviceCTM = m_pDevice->GetCTM();
|
float scaleX = fabs(deviceCTM.a);
|
float scaleY = fabs(deviceCTM.d);
|
int width = FXSYS_round(bbox.Width() * scaleX);
|
int height = FXSYS_round(bbox.Height() * scaleY);
|
auto pBackdrop = pdfium::MakeRetain<CFX_DIBitmap>();
|
if (bBackAlphaRequired && !m_bDropObjects)
|
pBackdrop->Create(width, height, FXDIB_Argb);
|
else
|
m_pDevice->CreateCompatibleBitmap(pBackdrop, width, height);
|
|
if (!pBackdrop->GetBuffer())
|
return nullptr;
|
|
bool bNeedDraw;
|
if (pBackdrop->HasAlpha())
|
bNeedDraw = !(m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT);
|
else
|
bNeedDraw = !(m_pDevice->GetRenderCaps() & FXRC_GET_BITS);
|
|
if (!bNeedDraw) {
|
m_pDevice->GetDIBits(pBackdrop, *left, *top);
|
return pBackdrop;
|
}
|
CFX_Matrix FinalMatrix = m_DeviceMatrix;
|
FinalMatrix.Translate(-*left, -*top);
|
FinalMatrix.Scale(scaleX, scaleY);
|
pBackdrop->Clear(pBackdrop->HasAlpha() ? 0 : 0xffffffff);
|
|
CFX_DefaultRenderDevice device;
|
device.Attach(pBackdrop, false, nullptr, false);
|
m_pContext->Render(&device, pObj, &m_Options, &FinalMatrix);
|
return pBackdrop;
|
}
|
|
std::unique_ptr<CPDF_GraphicStates> CPDF_RenderStatus::CloneObjStates(
|
const CPDF_GraphicStates* pSrcStates,
|
bool bStroke) {
|
if (!pSrcStates)
|
return nullptr;
|
|
auto pStates = pdfium::MakeUnique<CPDF_GraphicStates>();
|
pStates->CopyStates(*pSrcStates);
|
const CPDF_Color* pObjColor = bStroke
|
? pSrcStates->m_ColorState.GetStrokeColor()
|
: pSrcStates->m_ColorState.GetFillColor();
|
if (!pObjColor->IsNull()) {
|
pStates->m_ColorState.SetFillRGB(
|
bStroke ? pSrcStates->m_ColorState.GetStrokeRGB()
|
: pSrcStates->m_ColorState.GetFillRGB());
|
pStates->m_ColorState.SetStrokeRGB(pStates->m_ColorState.GetFillRGB());
|
}
|
return pStates;
|
}
|
|
#if defined _SKIA_SUPPORT_
|
void CPDF_RenderStatus::DebugVerifyDeviceIsPreMultiplied() const {
|
m_pDevice->DebugVerifyBitmapIsPreMultiplied();
|
}
|
#endif
|
|
bool CPDF_RenderStatus::ProcessText(CPDF_TextObject* textobj,
|
const CFX_Matrix* pObj2Device,
|
CFX_PathData* pClippingPath) {
|
if (textobj->GetCharCodes().empty())
|
return true;
|
|
const TextRenderingMode text_render_mode = textobj->m_TextState.GetTextMode();
|
if (text_render_mode == TextRenderingMode::MODE_INVISIBLE)
|
return true;
|
|
CPDF_Font* pFont = textobj->m_TextState.GetFont();
|
if (pFont->IsType3Font())
|
return ProcessType3Text(textobj, pObj2Device);
|
|
bool bFill = false;
|
bool bStroke = false;
|
bool bClip = false;
|
if (pClippingPath) {
|
bClip = true;
|
} else {
|
switch (text_render_mode) {
|
case TextRenderingMode::MODE_FILL:
|
case TextRenderingMode::MODE_FILL_CLIP:
|
bFill = true;
|
break;
|
case TextRenderingMode::MODE_STROKE:
|
case TextRenderingMode::MODE_STROKE_CLIP:
|
if (pFont->GetFace())
|
bStroke = true;
|
else
|
bFill = true;
|
break;
|
case TextRenderingMode::MODE_FILL_STROKE:
|
case TextRenderingMode::MODE_FILL_STROKE_CLIP:
|
bFill = true;
|
if (pFont->GetFace())
|
bStroke = true;
|
break;
|
case TextRenderingMode::MODE_INVISIBLE:
|
// Already handled above, but the compiler is not smart enough to
|
// realize it. Fall through.
|
NOTREACHED();
|
case TextRenderingMode::MODE_CLIP:
|
return true;
|
}
|
}
|
FX_ARGB stroke_argb = 0;
|
FX_ARGB fill_argb = 0;
|
bool bPattern = false;
|
if (bStroke) {
|
if (textobj->m_ColorState.GetStrokeColor()->IsPattern()) {
|
bPattern = true;
|
} else {
|
stroke_argb = GetStrokeArgb(textobj);
|
}
|
}
|
if (bFill) {
|
if (textobj->m_ColorState.GetFillColor()->IsPattern()) {
|
bPattern = true;
|
} else {
|
fill_argb = GetFillArgb(textobj);
|
}
|
}
|
CFX_Matrix text_matrix = textobj->GetTextMatrix();
|
if (!IsAvailableMatrix(text_matrix))
|
return true;
|
|
float font_size = textobj->m_TextState.GetFontSize();
|
if (bPattern) {
|
DrawTextPathWithPattern(textobj, pObj2Device, pFont, font_size,
|
&text_matrix, bFill, bStroke);
|
return true;
|
}
|
if (bClip || bStroke) {
|
const CFX_Matrix* pDeviceMatrix = pObj2Device;
|
CFX_Matrix device_matrix;
|
if (bStroke) {
|
const float* pCTM = textobj->m_TextState.GetCTM();
|
if (pCTM[0] != 1.0f || pCTM[3] != 1.0f) {
|
CFX_Matrix ctm(pCTM[0], pCTM[1], pCTM[2], pCTM[3], 0, 0);
|
text_matrix.ConcatInverse(ctm);
|
device_matrix = ctm;
|
device_matrix.Concat(*pObj2Device);
|
pDeviceMatrix = &device_matrix;
|
}
|
}
|
int flag = 0;
|
if (bStroke && bFill) {
|
flag |= FX_FILL_STROKE;
|
flag |= FX_STROKE_TEXT_MODE;
|
}
|
if (textobj->m_GeneralState.GetStrokeAdjust())
|
flag |= FX_STROKE_ADJUST;
|
if (m_Options.HasFlag(RENDER_NOTEXTSMOOTH))
|
flag |= FXFILL_NOPATHSMOOTH;
|
return CPDF_TextRenderer::DrawTextPath(
|
m_pDevice, textobj->GetCharCodes(), textobj->GetCharPositions(), pFont,
|
font_size, &text_matrix, pDeviceMatrix,
|
textobj->m_GraphState.GetObject(), fill_argb, stroke_argb,
|
pClippingPath, flag);
|
}
|
text_matrix.Concat(*pObj2Device);
|
return CPDF_TextRenderer::DrawNormalText(
|
m_pDevice, textobj->GetCharCodes(), textobj->GetCharPositions(), pFont,
|
font_size, &text_matrix, fill_argb, &m_Options);
|
}
|
|
RetainPtr<CPDF_Type3Cache> CPDF_RenderStatus::GetCachedType3(
|
CPDF_Type3Font* pFont) {
|
CPDF_Document* pDoc = pFont->GetDocument();
|
if (!pDoc)
|
return nullptr;
|
|
pDoc->GetPageData()->GetFont(pFont->GetFontDict());
|
return pDoc->GetRenderData()->GetCachedType3(pFont);
|
}
|
|
// TODO(npm): Font fallback for type 3 fonts? (Completely separate code!!)
|
bool CPDF_RenderStatus::ProcessType3Text(CPDF_TextObject* textobj,
|
const CFX_Matrix* pObj2Device) {
|
CPDF_Type3Font* pType3Font = textobj->m_TextState.GetFont()->AsType3Font();
|
if (pdfium::ContainsValue(m_Type3FontCache, pType3Font))
|
return true;
|
|
CFX_Matrix dCTM = m_pDevice->GetCTM();
|
float sa = fabs(dCTM.a);
|
float sd = fabs(dCTM.d);
|
CFX_Matrix text_matrix = textobj->GetTextMatrix();
|
CFX_Matrix char_matrix = pType3Font->GetFontMatrix();
|
float font_size = textobj->m_TextState.GetFontSize();
|
char_matrix.Scale(font_size, font_size);
|
FX_ARGB fill_argb = GetFillArgb(textobj, true);
|
int fill_alpha = FXARGB_A(fill_argb);
|
int device_class = m_pDevice->GetDeviceClass();
|
std::vector<FXTEXT_GLYPHPOS> glyphs;
|
if (device_class == FXDC_DISPLAY)
|
glyphs.resize(textobj->GetCharCodes().size());
|
else if (fill_alpha < 255)
|
return false;
|
|
CPDF_RefType3Cache refTypeCache(pType3Font);
|
for (size_t iChar = 0; iChar < textobj->GetCharCodes().size(); ++iChar) {
|
uint32_t charcode = textobj->GetCharCodes()[iChar];
|
if (charcode == static_cast<uint32_t>(-1))
|
continue;
|
|
CPDF_Type3Char* pType3Char = pType3Font->LoadChar(charcode);
|
if (!pType3Char)
|
continue;
|
|
CFX_Matrix matrix = char_matrix;
|
matrix.e += iChar > 0 ? textobj->GetCharPositions()[iChar - 1] : 0;
|
matrix.Concat(text_matrix);
|
matrix.Concat(*pObj2Device);
|
if (!pType3Char->LoadBitmap(m_pContext.Get())) {
|
if (!glyphs.empty()) {
|
for (size_t i = 0; i < iChar; ++i) {
|
const FXTEXT_GLYPHPOS& glyph = glyphs[i];
|
if (!glyph.m_pGlyph)
|
continue;
|
|
m_pDevice->SetBitMask(glyph.m_pGlyph->m_pBitmap,
|
glyph.m_Origin.x + glyph.m_pGlyph->m_Left,
|
glyph.m_Origin.y - glyph.m_pGlyph->m_Top,
|
fill_argb);
|
}
|
glyphs.clear();
|
}
|
|
std::unique_ptr<CPDF_GraphicStates> pStates =
|
CloneObjStates(textobj, false);
|
CPDF_RenderOptions options = m_Options;
|
uint32_t option_flags = options.GetFlags();
|
option_flags |= RENDER_FORCE_HALFTONE | RENDER_RECT_AA;
|
option_flags &= ~RENDER_FORCE_DOWNSAMPLE;
|
options.SetFlags(option_flags);
|
|
CPDF_Dictionary* pFormResource = nullptr;
|
if (pType3Char->form() && pType3Char->form()->m_pFormDict) {
|
pFormResource =
|
pType3Char->form()->m_pFormDict->GetDictFor("Resources");
|
}
|
if (fill_alpha == 255) {
|
CPDF_RenderStatus status;
|
status.Initialize(m_pContext.Get(), m_pDevice, nullptr, nullptr, this,
|
pStates.get(), &options,
|
pType3Char->form()->m_iTransparency, m_bDropObjects,
|
pFormResource, false, pType3Char, fill_argb);
|
status.m_Type3FontCache = m_Type3FontCache;
|
status.m_Type3FontCache.push_back(pType3Font);
|
|
CFX_RenderDevice::StateRestorer restorer(m_pDevice);
|
status.RenderObjectList(pType3Char->form(), &matrix);
|
} else {
|
FX_RECT rect =
|
matrix.TransformRect(pType3Char->form()->CalcBoundingBox())
|
.GetOuterRect();
|
CFX_DefaultRenderDevice bitmap_device;
|
if (!bitmap_device.Create((int)(rect.Width() * sa),
|
(int)(rect.Height() * sd), FXDIB_Argb,
|
nullptr)) {
|
return true;
|
}
|
bitmap_device.GetBitmap()->Clear(0);
|
CPDF_RenderStatus status;
|
status.Initialize(m_pContext.Get(), &bitmap_device, nullptr, nullptr,
|
this, pStates.get(), &options,
|
pType3Char->form()->m_iTransparency, m_bDropObjects,
|
pFormResource, false, pType3Char, fill_argb);
|
status.m_Type3FontCache = m_Type3FontCache;
|
status.m_Type3FontCache.push_back(pType3Font);
|
matrix.Translate(-rect.left, -rect.top);
|
matrix.Scale(sa, sd);
|
status.RenderObjectList(pType3Char->form(), &matrix);
|
m_pDevice->SetDIBits(bitmap_device.GetBitmap(), rect.left, rect.top);
|
}
|
} else if (pType3Char->GetBitmap()) {
|
if (device_class == FXDC_DISPLAY) {
|
RetainPtr<CPDF_Type3Cache> pCache = GetCachedType3(pType3Font);
|
refTypeCache.m_dwCount++;
|
CFX_GlyphBitmap* pBitmap = pCache->LoadGlyph(charcode, &matrix, sa, sd);
|
if (!pBitmap)
|
continue;
|
|
CFX_Point origin(FXSYS_round(matrix.e), FXSYS_round(matrix.f));
|
if (glyphs.empty()) {
|
m_pDevice->SetBitMask(pBitmap->m_pBitmap, origin.x + pBitmap->m_Left,
|
origin.y - pBitmap->m_Top, fill_argb);
|
} else {
|
glyphs[iChar].m_pGlyph = pBitmap;
|
glyphs[iChar].m_Origin = origin;
|
}
|
} else {
|
CFX_Matrix image_matrix = pType3Char->matrix();
|
image_matrix.Concat(matrix);
|
CPDF_ImageRenderer renderer;
|
if (renderer.Start(this, pType3Char->GetBitmap(), fill_argb, 255,
|
&image_matrix, 0, false, FXDIB_BLEND_NORMAL)) {
|
renderer.Continue(nullptr);
|
}
|
if (!renderer.GetResult())
|
return false;
|
}
|
}
|
}
|
|
if (glyphs.empty())
|
return true;
|
|
FX_RECT rect = FXGE_GetGlyphsBBox(glyphs, 0, sa, sd);
|
auto pBitmap = pdfium::MakeRetain<CFX_DIBitmap>();
|
if (!pBitmap->Create(static_cast<int>(rect.Width() * sa),
|
static_cast<int>(rect.Height() * sd), FXDIB_8bppMask)) {
|
return true;
|
}
|
pBitmap->Clear(0);
|
for (const FXTEXT_GLYPHPOS& glyph : glyphs) {
|
if (!glyph.m_pGlyph)
|
continue;
|
|
pdfium::base::CheckedNumeric<int> left = glyph.m_Origin.x;
|
left += glyph.m_pGlyph->m_Left;
|
left -= rect.left;
|
left *= sa;
|
if (!left.IsValid())
|
continue;
|
|
pdfium::base::CheckedNumeric<int> top = glyph.m_Origin.y;
|
top -= glyph.m_pGlyph->m_Top;
|
top -= rect.top;
|
top *= sd;
|
if (!top.IsValid())
|
continue;
|
|
pBitmap->CompositeMask(left.ValueOrDie(), top.ValueOrDie(),
|
glyph.m_pGlyph->m_pBitmap->GetWidth(),
|
glyph.m_pGlyph->m_pBitmap->GetHeight(),
|
glyph.m_pGlyph->m_pBitmap, fill_argb, 0, 0,
|
FXDIB_BLEND_NORMAL, nullptr, false, 0);
|
}
|
m_pDevice->SetBitMask(pBitmap, rect.left, rect.top, fill_argb);
|
return true;
|
}
|
|
void CPDF_RenderStatus::DrawTextPathWithPattern(const CPDF_TextObject* textobj,
|
const CFX_Matrix* pObj2Device,
|
CPDF_Font* pFont,
|
float font_size,
|
const CFX_Matrix* pTextMatrix,
|
bool bFill,
|
bool bStroke) {
|
if (!bStroke) {
|
CPDF_PathObject path;
|
std::vector<std::unique_ptr<CPDF_TextObject>> pCopy;
|
pCopy.push_back(std::unique_ptr<CPDF_TextObject>(textobj->Clone()));
|
path.m_bStroke = false;
|
path.m_FillType = FXFILL_WINDING;
|
path.m_ClipPath.AppendTexts(&pCopy);
|
path.m_ColorState = textobj->m_ColorState;
|
path.m_Path.AppendRect(textobj->m_Left, textobj->m_Bottom, textobj->m_Right,
|
textobj->m_Top);
|
path.m_Left = textobj->m_Left;
|
path.m_Bottom = textobj->m_Bottom;
|
path.m_Right = textobj->m_Right;
|
path.m_Top = textobj->m_Top;
|
RenderSingleObject(&path, pObj2Device);
|
return;
|
}
|
CPDF_CharPosList CharPosList;
|
CharPosList.Load(textobj->GetCharCodes(), textobj->GetCharPositions(), pFont,
|
font_size);
|
for (uint32_t i = 0; i < CharPosList.m_nChars; i++) {
|
FXTEXT_CHARPOS& charpos = CharPosList.m_pCharPos[i];
|
auto* font = charpos.m_FallbackFontPosition == -1
|
? pFont->GetFont()
|
: pFont->GetFontFallback(charpos.m_FallbackFontPosition);
|
const CFX_PathData* pPath =
|
font->LoadGlyphPath(charpos.m_GlyphIndex, charpos.m_FontCharWidth);
|
if (!pPath)
|
continue;
|
|
CPDF_PathObject path;
|
path.m_GraphState = textobj->m_GraphState;
|
path.m_ColorState = textobj->m_ColorState;
|
|
CFX_Matrix matrix;
|
if (charpos.m_bGlyphAdjust) {
|
matrix = CFX_Matrix(charpos.m_AdjustMatrix[0], charpos.m_AdjustMatrix[1],
|
charpos.m_AdjustMatrix[2], charpos.m_AdjustMatrix[3],
|
0, 0);
|
}
|
matrix.Concat(CFX_Matrix(font_size, 0, 0, font_size, charpos.m_Origin.x,
|
charpos.m_Origin.y));
|
path.m_Path.Append(pPath, &matrix);
|
path.m_Matrix = *pTextMatrix;
|
path.m_bStroke = bStroke;
|
path.m_FillType = bFill ? FXFILL_WINDING : 0;
|
path.CalcBoundingBox();
|
ProcessPath(&path, pObj2Device);
|
}
|
}
|
|
void CPDF_RenderStatus::DrawShading(const CPDF_ShadingPattern* pPattern,
|
CFX_Matrix* pMatrix,
|
FX_RECT& clip_rect,
|
int alpha,
|
bool bAlphaMode) {
|
const auto& funcs = pPattern->GetFuncs();
|
CPDF_Dictionary* pDict = pPattern->GetShadingObject()->GetDict();
|
CPDF_ColorSpace* pColorSpace = pPattern->GetCS();
|
if (!pColorSpace)
|
return;
|
|
FX_ARGB background = 0;
|
if (!pPattern->IsShadingObject() && pDict->KeyExist("Background")) {
|
CPDF_Array* pBackColor = pDict->GetArrayFor("Background");
|
if (pBackColor &&
|
pBackColor->GetCount() >= pColorSpace->CountComponents()) {
|
CFX_FixedBufGrow<float, 16> comps(pColorSpace->CountComponents());
|
for (uint32_t i = 0; i < pColorSpace->CountComponents(); i++)
|
comps[i] = pBackColor->GetNumberAt(i);
|
float R = 0.0f;
|
float G = 0.0f;
|
float B = 0.0f;
|
pColorSpace->GetRGB(comps, &R, &G, &B);
|
background = ArgbEncode(255, (int32_t)(R * 255), (int32_t)(G * 255),
|
(int32_t)(B * 255));
|
}
|
}
|
if (pDict->KeyExist("BBox")) {
|
clip_rect.Intersect(
|
pMatrix->TransformRect(pDict->GetRectFor("BBox")).GetOuterRect());
|
}
|
if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SHADING &&
|
m_pDevice->GetDeviceDriver()->DrawShading(pPattern, pMatrix, clip_rect,
|
alpha, bAlphaMode)) {
|
return;
|
}
|
CPDF_DeviceBuffer buffer;
|
buffer.Initialize(m_pContext.Get(), m_pDevice, &clip_rect, m_pCurObj, 150);
|
CFX_Matrix FinalMatrix = *pMatrix;
|
FinalMatrix.Concat(*buffer.GetMatrix());
|
RetainPtr<CFX_DIBitmap> pBitmap = buffer.GetBitmap();
|
if (!pBitmap->GetBuffer())
|
return;
|
|
pBitmap->Clear(background);
|
switch (pPattern->GetShadingType()) {
|
case kInvalidShading:
|
case kMaxShading:
|
return;
|
case kFunctionBasedShading:
|
DrawFuncShading(pBitmap, &FinalMatrix, pDict, funcs, pColorSpace, alpha);
|
break;
|
case kAxialShading:
|
DrawAxialShading(pBitmap, &FinalMatrix, pDict, funcs, pColorSpace, alpha);
|
break;
|
case kRadialShading:
|
DrawRadialShading(pBitmap, &FinalMatrix, pDict, funcs, pColorSpace,
|
alpha);
|
break;
|
case kFreeFormGouraudTriangleMeshShading: {
|
// The shading object can be a stream or a dictionary. We do not handle
|
// the case of dictionary at the moment.
|
if (CPDF_Stream* pStream = ToStream(pPattern->GetShadingObject())) {
|
DrawFreeGouraudShading(pBitmap, &FinalMatrix, pStream, funcs,
|
pColorSpace, alpha);
|
}
|
} break;
|
case kLatticeFormGouraudTriangleMeshShading: {
|
// The shading object can be a stream or a dictionary. We do not handle
|
// the case of dictionary at the moment.
|
if (CPDF_Stream* pStream = ToStream(pPattern->GetShadingObject())) {
|
DrawLatticeGouraudShading(pBitmap, &FinalMatrix, pStream, funcs,
|
pColorSpace, alpha);
|
}
|
} break;
|
case kCoonsPatchMeshShading:
|
case kTensorProductPatchMeshShading: {
|
// The shading object can be a stream or a dictionary. We do not handle
|
// the case of dictionary at the moment.
|
if (CPDF_Stream* pStream = ToStream(pPattern->GetShadingObject())) {
|
DrawCoonPatchMeshes(pPattern->GetShadingType(), pBitmap, &FinalMatrix,
|
pStream, funcs, pColorSpace, m_Options.GetFlags(),
|
alpha);
|
}
|
} break;
|
}
|
if (bAlphaMode)
|
pBitmap->LoadChannel(FXDIB_Red, pBitmap, FXDIB_Alpha);
|
|
if (m_Options.ColorModeIs(CPDF_RenderOptions::kGray))
|
pBitmap->ConvertColorScale(0, 0xffffff);
|
buffer.OutputToDevice();
|
}
|
|
void CPDF_RenderStatus::DrawShadingPattern(CPDF_ShadingPattern* pattern,
|
const CPDF_PageObject* pPageObj,
|
const CFX_Matrix* pObj2Device,
|
bool bStroke) {
|
if (!pattern->Load())
|
return;
|
|
CFX_RenderDevice::StateRestorer restorer(m_pDevice);
|
if (pPageObj->IsPath()) {
|
if (!SelectClipPath(pPageObj->AsPath(), pObj2Device, bStroke))
|
return;
|
} else if (pPageObj->IsImage()) {
|
m_pDevice->SetClip_Rect(pPageObj->GetBBox(pObj2Device));
|
} else {
|
return;
|
}
|
FX_RECT rect;
|
if (GetObjectClippedRect(pPageObj, pObj2Device, false, rect))
|
return;
|
|
CFX_Matrix matrix = *pattern->pattern_to_form();
|
matrix.Concat(*pObj2Device);
|
GetScaledMatrix(matrix);
|
int alpha =
|
FXSYS_round(255 * (bStroke ? pPageObj->m_GeneralState.GetStrokeAlpha()
|
: pPageObj->m_GeneralState.GetFillAlpha()));
|
DrawShading(pattern, &matrix, rect, alpha,
|
m_Options.ColorModeIs(CPDF_RenderOptions::kAlpha));
|
}
|
|
void CPDF_RenderStatus::ProcessShading(const CPDF_ShadingObject* pShadingObj,
|
const CFX_Matrix* pObj2Device) {
|
FX_RECT rect = pShadingObj->GetBBox(pObj2Device);
|
FX_RECT clip_box = m_pDevice->GetClipBox();
|
rect.Intersect(clip_box);
|
if (rect.IsEmpty())
|
return;
|
|
CFX_Matrix matrix = pShadingObj->matrix();
|
matrix.Concat(*pObj2Device);
|
DrawShading(pShadingObj->pattern(), &matrix, rect,
|
FXSYS_round(255 * pShadingObj->m_GeneralState.GetFillAlpha()),
|
m_Options.ColorModeIs(CPDF_RenderOptions::kAlpha));
|
}
|
|
void CPDF_RenderStatus::DrawTilingPattern(CPDF_TilingPattern* pPattern,
|
CPDF_PageObject* pPageObj,
|
const CFX_Matrix* pObj2Device,
|
bool bStroke) {
|
if (!pPattern->Load())
|
return;
|
|
CFX_RenderDevice::StateRestorer restorer(m_pDevice);
|
if (pPageObj->IsPath()) {
|
if (!SelectClipPath(pPageObj->AsPath(), pObj2Device, bStroke))
|
return;
|
} else if (pPageObj->IsImage()) {
|
m_pDevice->SetClip_Rect(pPageObj->GetBBox(pObj2Device));
|
} else {
|
return;
|
}
|
|
FX_RECT clip_box = m_pDevice->GetClipBox();
|
if (clip_box.IsEmpty())
|
return;
|
|
CFX_Matrix dCTM = m_pDevice->GetCTM();
|
float sa = fabs(dCTM.a);
|
float sd = fabs(dCTM.d);
|
clip_box.right = clip_box.left + (int32_t)ceil(clip_box.Width() * sa);
|
clip_box.bottom = clip_box.top + (int32_t)ceil(clip_box.Height() * sd);
|
|
CFX_Matrix mtPattern2Device = *pPattern->pattern_to_form();
|
mtPattern2Device.Concat(*pObj2Device);
|
GetScaledMatrix(mtPattern2Device);
|
|
bool bAligned =
|
pPattern->bbox().left == 0 && pPattern->bbox().bottom == 0 &&
|
pPattern->bbox().right == pPattern->x_step() &&
|
pPattern->bbox().top == pPattern->y_step() &&
|
(mtPattern2Device.IsScaled() || mtPattern2Device.Is90Rotated());
|
|
CFX_FloatRect cell_bbox = mtPattern2Device.TransformRect(pPattern->bbox());
|
|
float ceil_height = std::ceil(cell_bbox.Height());
|
float ceil_width = std::ceil(cell_bbox.Width());
|
|
// Validate the float will fit into the int when the conversion is done.
|
if (!pdfium::base::IsValueInRangeForNumericType<int>(ceil_height) ||
|
!pdfium::base::IsValueInRangeForNumericType<int>(ceil_width)) {
|
return;
|
}
|
|
int width = static_cast<int>(ceil_width);
|
int height = static_cast<int>(ceil_height);
|
if (width <= 0)
|
width = 1;
|
if (height <= 0)
|
height = 1;
|
|
CFX_FloatRect clip_box_p =
|
mtPattern2Device.GetInverse().TransformRect(CFX_FloatRect(clip_box));
|
int min_col = (int)ceil((clip_box_p.left - pPattern->bbox().right) /
|
pPattern->x_step());
|
int max_col = (int)floor((clip_box_p.right - pPattern->bbox().left) /
|
pPattern->x_step());
|
int min_row = (int)ceil((clip_box_p.bottom - pPattern->bbox().top) /
|
pPattern->y_step());
|
int max_row = (int)floor((clip_box_p.top - pPattern->bbox().bottom) /
|
pPattern->y_step());
|
|
// Make sure we can fit the needed width * height into an int.
|
if (height > std::numeric_limits<int>::max() / width)
|
return;
|
|
if (width > clip_box.Width() || height > clip_box.Height() ||
|
width * height > clip_box.Width() * clip_box.Height()) {
|
std::unique_ptr<CPDF_GraphicStates> pStates;
|
if (!pPattern->colored())
|
pStates = CloneObjStates(pPageObj, bStroke);
|
|
auto& pFormDict = pPattern->form()->m_pFormDict;
|
CPDF_Dictionary* pFormResource =
|
pFormDict ? pFormDict->GetDictFor("Resources") : nullptr;
|
for (int col = min_col; col <= max_col; col++) {
|
for (int row = min_row; row <= max_row; row++) {
|
CFX_PointF original = mtPattern2Device.Transform(
|
CFX_PointF(col * pPattern->x_step(), row * pPattern->y_step()));
|
CFX_Matrix matrix = *pObj2Device;
|
matrix.Translate(original.x - mtPattern2Device.e,
|
original.y - mtPattern2Device.f);
|
CFX_RenderDevice::StateRestorer restorer2(m_pDevice);
|
CPDF_RenderStatus status;
|
status.Initialize(m_pContext.Get(), m_pDevice, nullptr, nullptr, this,
|
pStates.get(), &m_Options,
|
pPattern->form()->m_iTransparency, m_bDropObjects,
|
pFormResource);
|
status.RenderObjectList(pPattern->form(), &matrix);
|
}
|
}
|
return;
|
}
|
if (bAligned) {
|
int orig_x = FXSYS_round(mtPattern2Device.e);
|
int orig_y = FXSYS_round(mtPattern2Device.f);
|
min_col = (clip_box.left - orig_x) / width;
|
if (clip_box.left < orig_x)
|
min_col--;
|
|
max_col = (clip_box.right - orig_x) / width;
|
if (clip_box.right <= orig_x)
|
max_col--;
|
|
min_row = (clip_box.top - orig_y) / height;
|
if (clip_box.top < orig_y)
|
min_row--;
|
|
max_row = (clip_box.bottom - orig_y) / height;
|
if (clip_box.bottom <= orig_y)
|
max_row--;
|
}
|
float left_offset = cell_bbox.left - mtPattern2Device.e;
|
float top_offset = cell_bbox.bottom - mtPattern2Device.f;
|
RetainPtr<CFX_DIBitmap> pPatternBitmap;
|
if (width * height < 16) {
|
RetainPtr<CFX_DIBitmap> pEnlargedBitmap =
|
DrawPatternBitmap(m_pContext->GetDocument(), m_pContext->GetPageCache(),
|
pPattern, pObj2Device, 8, 8, m_Options.GetFlags());
|
pPatternBitmap = pEnlargedBitmap->StretchTo(width, height, 0, nullptr);
|
} else {
|
pPatternBitmap = DrawPatternBitmap(
|
m_pContext->GetDocument(), m_pContext->GetPageCache(), pPattern,
|
pObj2Device, width, height, m_Options.GetFlags());
|
}
|
if (!pPatternBitmap)
|
return;
|
|
if (m_Options.ColorModeIs(CPDF_RenderOptions::kGray))
|
pPatternBitmap->ConvertColorScale(0, 0xffffff);
|
|
FX_ARGB fill_argb = GetFillArgb(pPageObj);
|
int clip_width = clip_box.right - clip_box.left;
|
int clip_height = clip_box.bottom - clip_box.top;
|
auto pScreen = pdfium::MakeRetain<CFX_DIBitmap>();
|
if (!pScreen->Create(clip_width, clip_height, FXDIB_Argb))
|
return;
|
|
pScreen->Clear(0);
|
uint32_t* src_buf = (uint32_t*)pPatternBitmap->GetBuffer();
|
for (int col = min_col; col <= max_col; col++) {
|
for (int row = min_row; row <= max_row; row++) {
|
int start_x, start_y;
|
if (bAligned) {
|
start_x = FXSYS_round(mtPattern2Device.e) + col * width - clip_box.left;
|
start_y = FXSYS_round(mtPattern2Device.f) + row * height - clip_box.top;
|
} else {
|
CFX_PointF original = mtPattern2Device.Transform(
|
CFX_PointF(col * pPattern->x_step(), row * pPattern->y_step()));
|
|
pdfium::base::CheckedNumeric<int> safeStartX =
|
FXSYS_round(original.x + left_offset);
|
pdfium::base::CheckedNumeric<int> safeStartY =
|
FXSYS_round(original.y + top_offset);
|
|
safeStartX -= clip_box.left;
|
safeStartY -= clip_box.top;
|
if (!safeStartX.IsValid() || !safeStartY.IsValid())
|
return;
|
|
start_x = safeStartX.ValueOrDie();
|
start_y = safeStartY.ValueOrDie();
|
}
|
if (width == 1 && height == 1) {
|
if (start_x < 0 || start_x >= clip_box.Width() || start_y < 0 ||
|
start_y >= clip_box.Height()) {
|
continue;
|
}
|
uint32_t* dest_buf =
|
(uint32_t*)(pScreen->GetBuffer() + pScreen->GetPitch() * start_y +
|
start_x * 4);
|
if (pPattern->colored())
|
*dest_buf = *src_buf;
|
else
|
*dest_buf = (*(uint8_t*)src_buf << 24) | (fill_argb & 0xffffff);
|
} else {
|
if (pPattern->colored()) {
|
pScreen->CompositeBitmap(start_x, start_y, width, height,
|
pPatternBitmap, 0, 0);
|
} else {
|
pScreen->CompositeMask(start_x, start_y, width, height,
|
pPatternBitmap, fill_argb, 0, 0);
|
}
|
}
|
}
|
}
|
CompositeDIBitmap(pScreen, clip_box.left, clip_box.top, 0, 255,
|
FXDIB_BLEND_NORMAL, false);
|
}
|
|
void CPDF_RenderStatus::DrawPathWithPattern(CPDF_PathObject* pPathObj,
|
const CFX_Matrix* pObj2Device,
|
const CPDF_Color* pColor,
|
bool bStroke) {
|
CPDF_Pattern* pattern = pColor->GetPattern();
|
if (!pattern)
|
return;
|
|
if (CPDF_TilingPattern* pTilingPattern = pattern->AsTilingPattern())
|
DrawTilingPattern(pTilingPattern, pPathObj, pObj2Device, bStroke);
|
else if (CPDF_ShadingPattern* pShadingPattern = pattern->AsShadingPattern())
|
DrawShadingPattern(pShadingPattern, pPathObj, pObj2Device, bStroke);
|
}
|
|
void CPDF_RenderStatus::ProcessPathPattern(CPDF_PathObject* pPathObj,
|
const CFX_Matrix* pObj2Device,
|
int& filltype,
|
bool& bStroke) {
|
if (filltype) {
|
const CPDF_Color& FillColor = *pPathObj->m_ColorState.GetFillColor();
|
if (FillColor.IsPattern()) {
|
DrawPathWithPattern(pPathObj, pObj2Device, &FillColor, false);
|
filltype = 0;
|
}
|
}
|
if (bStroke) {
|
const CPDF_Color& StrokeColor = *pPathObj->m_ColorState.GetStrokeColor();
|
if (StrokeColor.IsPattern()) {
|
DrawPathWithPattern(pPathObj, pObj2Device, &StrokeColor, true);
|
bStroke = false;
|
}
|
}
|
}
|
|
bool CPDF_RenderStatus::ProcessImage(CPDF_ImageObject* pImageObj,
|
const CFX_Matrix* pObj2Device) {
|
CPDF_ImageRenderer render;
|
if (render.Start(this, pImageObj, pObj2Device, m_bStdCS, m_curBlend))
|
render.Continue(nullptr);
|
return render.GetResult();
|
}
|
|
void CPDF_RenderStatus::CompositeDIBitmap(
|
const RetainPtr<CFX_DIBitmap>& pDIBitmap,
|
int left,
|
int top,
|
FX_ARGB mask_argb,
|
int bitmap_alpha,
|
int blend_mode,
|
int iTransparency) {
|
if (!pDIBitmap)
|
return;
|
|
if (blend_mode == FXDIB_BLEND_NORMAL) {
|
if (!pDIBitmap->IsAlphaMask()) {
|
if (bitmap_alpha < 255) {
|
#ifdef _SKIA_SUPPORT_
|
std::unique_ptr<CFX_ImageRenderer> dummy;
|
CFX_Matrix m(pDIBitmap->GetWidth(), 0, 0, -pDIBitmap->GetHeight(), left,
|
top + pDIBitmap->GetHeight());
|
m_pDevice->StartDIBits(pDIBitmap, bitmap_alpha, 0, &m, 0, &dummy);
|
return;
|
#else
|
pDIBitmap->MultiplyAlpha(bitmap_alpha);
|
#endif
|
}
|
#ifdef _SKIA_SUPPORT_
|
CFX_SkiaDeviceDriver::PreMultiply(pDIBitmap);
|
#endif
|
if (m_pDevice->SetDIBits(pDIBitmap, left, top)) {
|
return;
|
}
|
} else {
|
uint32_t fill_argb = m_Options.TranslateColor(mask_argb);
|
if (bitmap_alpha < 255) {
|
uint8_t* fill_argb8 = reinterpret_cast<uint8_t*>(&fill_argb);
|
fill_argb8[3] *= bitmap_alpha / 255;
|
}
|
if (m_pDevice->SetBitMask(pDIBitmap, left, top, fill_argb)) {
|
return;
|
}
|
}
|
}
|
bool bIsolated = !!(iTransparency & PDFTRANS_ISOLATED);
|
bool bGroup = !!(iTransparency & PDFTRANS_GROUP);
|
bool bBackAlphaRequired = blend_mode && bIsolated && !m_bDropObjects;
|
bool bGetBackGround =
|
((m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT)) ||
|
(!(m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT) &&
|
(m_pDevice->GetRenderCaps() & FXRC_GET_BITS) && !bBackAlphaRequired);
|
if (bGetBackGround) {
|
if (bIsolated || !bGroup) {
|
if (!pDIBitmap->IsAlphaMask())
|
m_pDevice->SetDIBitsWithBlend(pDIBitmap, left, top, blend_mode);
|
return;
|
}
|
|
FX_RECT rect(left, top, left + pDIBitmap->GetWidth(),
|
top + pDIBitmap->GetHeight());
|
rect.Intersect(m_pDevice->GetClipBox());
|
RetainPtr<CFX_DIBitmap> pClone;
|
if (m_pDevice->GetBackDrop() && m_pDevice->GetBitmap()) {
|
pClone = m_pDevice->GetBackDrop()->Clone(&rect);
|
if (!pClone)
|
return;
|
|
RetainPtr<CFX_DIBitmap> pForeBitmap = m_pDevice->GetBitmap();
|
pClone->CompositeBitmap(0, 0, pClone->GetWidth(), pClone->GetHeight(),
|
pForeBitmap, rect.left, rect.top);
|
left = std::min(left, 0);
|
top = std::min(top, 0);
|
if (pDIBitmap->IsAlphaMask()) {
|
pClone->CompositeMask(0, 0, pClone->GetWidth(), pClone->GetHeight(),
|
pDIBitmap, mask_argb, left, top, blend_mode);
|
} else {
|
pClone->CompositeBitmap(0, 0, pClone->GetWidth(), pClone->GetHeight(),
|
pDIBitmap, left, top, blend_mode);
|
}
|
} else {
|
pClone = pDIBitmap;
|
}
|
if (m_pDevice->GetBackDrop()) {
|
m_pDevice->SetDIBits(pClone, rect.left, rect.top);
|
} else {
|
if (!pDIBitmap->IsAlphaMask()) {
|
m_pDevice->SetDIBitsWithBlend(pDIBitmap, rect.left, rect.top,
|
blend_mode);
|
}
|
}
|
return;
|
}
|
int back_left;
|
int back_top;
|
FX_RECT rect(left, top, left + pDIBitmap->GetWidth(),
|
top + pDIBitmap->GetHeight());
|
RetainPtr<CFX_DIBitmap> pBackdrop =
|
GetBackdrop(m_pCurObj, rect, blend_mode > FXDIB_BLEND_NORMAL && bIsolated,
|
&back_left, &back_top);
|
if (!pBackdrop)
|
return;
|
|
if (pDIBitmap->IsAlphaMask()) {
|
pBackdrop->CompositeMask(left - back_left, top - back_top,
|
pDIBitmap->GetWidth(), pDIBitmap->GetHeight(),
|
pDIBitmap, mask_argb, 0, 0, blend_mode);
|
} else {
|
pBackdrop->CompositeBitmap(left - back_left, top - back_top,
|
pDIBitmap->GetWidth(), pDIBitmap->GetHeight(),
|
pDIBitmap, 0, 0, blend_mode);
|
}
|
|
auto pBackdrop1 = pdfium::MakeRetain<CFX_DIBitmap>();
|
pBackdrop1->Create(pBackdrop->GetWidth(), pBackdrop->GetHeight(),
|
FXDIB_Rgb32);
|
pBackdrop1->Clear((uint32_t)-1);
|
pBackdrop1->CompositeBitmap(0, 0, pBackdrop->GetWidth(),
|
pBackdrop->GetHeight(), pBackdrop, 0, 0);
|
pBackdrop = std::move(pBackdrop1);
|
m_pDevice->SetDIBits(pBackdrop, back_left, back_top);
|
}
|
|
RetainPtr<CFX_DIBitmap> CPDF_RenderStatus::LoadSMask(
|
CPDF_Dictionary* pSMaskDict,
|
FX_RECT* pClipRect,
|
const CFX_Matrix* pMatrix) {
|
if (!pSMaskDict)
|
return nullptr;
|
|
CPDF_Stream* pGroup = pSMaskDict->GetStreamFor("G");
|
if (!pGroup)
|
return nullptr;
|
|
std::unique_ptr<CPDF_Function> pFunc;
|
CPDF_Object* pFuncObj = pSMaskDict->GetDirectObjectFor("TR");
|
if (pFuncObj && (pFuncObj->IsDictionary() || pFuncObj->IsStream()))
|
pFunc = CPDF_Function::Load(pFuncObj);
|
|
CFX_Matrix matrix = *pMatrix;
|
matrix.Translate(-pClipRect->left, -pClipRect->top);
|
|
CPDF_Form form(m_pContext->GetDocument(), m_pContext->GetPageResources(),
|
pGroup);
|
form.ParseContent();
|
|
CFX_DefaultRenderDevice bitmap_device;
|
bool bLuminosity = pSMaskDict->GetStringFor("S") != "Alpha";
|
int width = pClipRect->right - pClipRect->left;
|
int height = pClipRect->bottom - pClipRect->top;
|
FXDIB_Format format;
|
#if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_ || defined _SKIA_SUPPORT_ || \
|
defined _SKIA_SUPPORT_PATHS_
|
format = bLuminosity ? FXDIB_Rgb32 : FXDIB_8bppMask;
|
#else
|
format = bLuminosity ? FXDIB_Rgb : FXDIB_8bppMask;
|
#endif
|
if (!bitmap_device.Create(width, height, format, nullptr))
|
return nullptr;
|
|
CFX_DIBitmap& bitmap = *bitmap_device.GetBitmap();
|
int color_space_family = 0;
|
if (bLuminosity) {
|
CPDF_Array* pBC = pSMaskDict->GetArrayFor("BC");
|
FX_ARGB back_color = 0xff000000;
|
if (pBC) {
|
CPDF_Object* pCSObj = nullptr;
|
CPDF_Dictionary* pDict = pGroup->GetDict();
|
if (pDict && pDict->GetDictFor("Group")) {
|
pCSObj = pDict->GetDictFor("Group")->GetDirectObjectFor("CS");
|
}
|
const CPDF_ColorSpace* pCS =
|
m_pContext->GetDocument()->LoadColorSpace(pCSObj);
|
if (pCS) {
|
// Store Color Space Family to use in CPDF_RenderStatus::Initialize.
|
color_space_family = pCS->GetFamily();
|
|
float R, G, B;
|
uint32_t comps = 8;
|
if (pCS->CountComponents() > comps) {
|
comps = pCS->CountComponents();
|
}
|
CFX_FixedBufGrow<float, 8> float_array(comps);
|
float* pFloats = float_array;
|
FX_SAFE_UINT32 num_floats = comps;
|
num_floats *= sizeof(float);
|
if (!num_floats.IsValid()) {
|
return nullptr;
|
}
|
memset(pFloats, 0, num_floats.ValueOrDie());
|
size_t count = pBC->GetCount() > 8 ? 8 : pBC->GetCount();
|
for (size_t i = 0; i < count; i++) {
|
pFloats[i] = pBC->GetNumberAt(i);
|
}
|
pCS->GetRGB(pFloats, &R, &G, &B);
|
back_color = 0xff000000 | ((int32_t)(R * 255) << 16) |
|
((int32_t)(G * 255) << 8) | (int32_t)(B * 255);
|
m_pContext->GetDocument()->GetPageData()->ReleaseColorSpace(pCSObj);
|
}
|
}
|
bitmap.Clear(back_color);
|
} else {
|
bitmap.Clear(0);
|
}
|
CPDF_Dictionary* pFormResource = nullptr;
|
if (form.m_pFormDict) {
|
pFormResource = form.m_pFormDict->GetDictFor("Resources");
|
}
|
CPDF_RenderOptions options;
|
options.SetColorMode(bLuminosity ? CPDF_RenderOptions::kNormal
|
: CPDF_RenderOptions::kAlpha);
|
CPDF_RenderStatus status;
|
status.Initialize(m_pContext.Get(), &bitmap_device, nullptr, nullptr, nullptr,
|
nullptr, &options, 0, m_bDropObjects, pFormResource, true,
|
nullptr, 0, color_space_family, bLuminosity);
|
status.RenderObjectList(&form, &matrix);
|
|
auto pMask = pdfium::MakeRetain<CFX_DIBitmap>();
|
if (!pMask->Create(width, height, FXDIB_8bppMask))
|
return nullptr;
|
|
uint8_t* dest_buf = pMask->GetBuffer();
|
int dest_pitch = pMask->GetPitch();
|
uint8_t* src_buf = bitmap.GetBuffer();
|
int src_pitch = bitmap.GetPitch();
|
std::vector<uint8_t> transfers(256);
|
if (pFunc) {
|
CFX_FixedBufGrow<float, 16> results(pFunc->CountOutputs());
|
for (int i = 0; i < 256; i++) {
|
float input = (float)i / 255.0f;
|
int nresult;
|
pFunc->Call(&input, 1, results, &nresult);
|
transfers[i] = FXSYS_round(results[0] * 255);
|
}
|
} else {
|
for (int i = 0; i < 256; i++) {
|
transfers[i] = i;
|
}
|
}
|
if (bLuminosity) {
|
int Bpp = bitmap.GetBPP() / 8;
|
for (int row = 0; row < height; row++) {
|
uint8_t* dest_pos = dest_buf + row * dest_pitch;
|
uint8_t* src_pos = src_buf + row * src_pitch;
|
for (int col = 0; col < width; col++) {
|
*dest_pos++ = transfers[FXRGB2GRAY(src_pos[2], src_pos[1], *src_pos)];
|
src_pos += Bpp;
|
}
|
}
|
} else if (pFunc) {
|
int size = dest_pitch * height;
|
for (int i = 0; i < size; i++) {
|
dest_buf[i] = transfers[src_buf[i]];
|
}
|
} else {
|
memcpy(dest_buf, src_buf, dest_pitch * height);
|
}
|
return pMask;
|
}
|
