/*
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* Copyright 2013 Google Inc.
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*
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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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*/
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#include "SkTypes.h"
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#ifdef SAMPLE_PDF_FILE_VIEWER
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#include "Sample.h"
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#include "SkCanvas.h"
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#include "SkGradientShader.h"
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#include "SkGraphics.h"
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#include "SkOSFile.h"
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#include "SkPath.h"
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#include "SkPicture.h"
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#include "SkRandom.h"
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#include "SkRegion.h"
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#include "SkShader.h"
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#include "SkUTF.h"
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#include "SkColorPriv.h"
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#include "SkColorFilter.h"
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#include "SkTime.h"
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#include "SkTypeface.h"
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#include "SkPdfRenderer.h"
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class PdfFileViewer : public Sample {
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private:
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SkString fFilename;
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SkPicture* fPicture; // TODO(edisonn): multiple pages, one page / picture, make it an array
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static SkPicture* LoadPdf(const char path[]) {
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std::unique_ptr<SkPdfRenderer> renderer(SkPdfRenderer::CreateFromFile(path));
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if (nullptr == renderer.get()) {
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return nullptr;
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}
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SkPicture* pic = new SkPicture;
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SkCanvas* canvas = pic->beginRecording((int) renderer->MediaBox(0).width(),
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(int) renderer->MediaBox(0).height());
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renderer->renderPage(0, canvas, renderer->MediaBox(0));
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pic->endRecording();
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return pic;
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}
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public:
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PdfFileViewer(const char name[] = nullptr) : fFilename(name) {
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fPicture = nullptr;
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}
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virtual ~PdfFileViewer() {
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SkSafeUnref(fPicture);
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}
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protected:
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virtual bool onQuery(Sample::Event* evt) {
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if (Sample::TitleQ(*evt)) {
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SkString name("P:");
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const char* basename = strrchr(fFilename.c_str(), SkPATH_SEPARATOR);
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name.append(basename ? basename+1: fFilename.c_str());
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Sample::TitleR(evt, name.c_str());
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return true;
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}
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return this->INHERITED::onQuery(evt);
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}
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virtual bool onEvent(const SkEvent& evt) {
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// TODO(edisonn): add here event handlers to disable clipping, or to show helpful info
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// like pdf object from click, ...
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// TODO(edisonn): first, next, prev, last page navigation + slideshow
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return this->INHERITED::onEvent(evt);
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}
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virtual void onDrawContent(SkCanvas* canvas) {
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if (!fPicture) {
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fPicture = LoadPdf(fFilename.c_str());
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}
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if (fPicture) {
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canvas->drawPicture(*fPicture);
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}
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}
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private:
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typedef Sample INHERITED;
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};
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Sample* CreateSamplePdfFileViewer(const char filename[]);
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Sample* CreateSamplePdfFileViewer(const char filename[]) {
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return new PdfFileViewer(filename);
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}
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//////////////////////////////////////////////////////////////////////////////
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#if 0
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static Sample* MyFactory() { return new PdfFileViewer; }
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static SampleRegister reg(MyFactory);
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#endif
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#endif // SAMPLE_PDF_FILE_VIEWER
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