From 0018b9d9a3179ba706705083c87270d27b600c09 Mon Sep 17 00:00:00 2001
|
From: Jeffy Chen <jeffy.chen@rock-chips.com>
|
Date: Mon, 28 Feb 2022 11:31:12 +0800
|
Subject: [PATCH 32/32] linuxfbdrm: Support setting screen size and display
|
rectangle
|
|
Usage:
|
export QT_QPA_PLATFORM=linuxfb:size=480x200:rect=0,20,480,220
|
|
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
|
---
|
.../platforms/linuxfb/qlinuxfbdrmscreen.cpp | 30 +++++++++++++++++--
|
.../platforms/linuxfb/qlinuxfbdrmscreen.h | 2 ++
|
2 files changed, 30 insertions(+), 2 deletions(-)
|
|
diff --git a/src/plugins/platforms/linuxfb/qlinuxfbdrmscreen.cpp b/src/plugins/platforms/linuxfb/qlinuxfbdrmscreen.cpp
|
index b6e3960d..04df126e 100644
|
--- a/src/plugins/platforms/linuxfb/qlinuxfbdrmscreen.cpp
|
+++ b/src/plugins/platforms/linuxfb/qlinuxfbdrmscreen.cpp
|
@@ -416,14 +416,27 @@ void QLinuxFbDevice::swapBuffers(Output *output)
|
QLinuxFbDrmScreen::QLinuxFbDrmScreen(const QStringList &args)
|
: m_screenConfig(nullptr),
|
m_device(nullptr),
|
- m_rotation(0)
|
+ m_rotation(0),
|
+ m_screenSize(),
|
+ m_displayRect()
|
{
|
QRegularExpression rotationRx(QLatin1String("rotation=(0|90|180|270)"));
|
+ QRegularExpression sizeRx(QLatin1String("size=([1-9]\\d*)x([1-9]\\d*)"));
|
+ QRegularExpression rectRx(QLatin1String("rect=(\\d+),(\\d+),(\\d+),(\\d+)"));
|
|
for (const QString &arg : qAsConst(args)) {
|
QRegularExpressionMatch match;
|
if (arg.contains(rotationRx, &match))
|
m_rotation = match.captured(1).toInt();
|
+
|
+ if (arg.contains(sizeRx, &match))
|
+ m_screenSize =
|
+ QSize(match.captured(1).toInt(), match.captured(2).toInt());
|
+
|
+ if (arg.contains(rectRx, &match))
|
+ m_displayRect =
|
+ QRect(match.captured(1).toInt(), match.captured(2).toInt(),
|
+ match.captured(3).toInt(), match.captured(4).toInt());
|
}
|
}
|
|
@@ -451,7 +464,14 @@ bool QLinuxFbDrmScreen::initialize()
|
|
QLinuxFbDevice::Output *output(m_device->output(0));
|
|
- mGeometry = QRect(QPoint(0, 0), output->currentRes());
|
+ if (m_screenSize.isEmpty())
|
+ m_screenSize = output->currentRes();
|
+
|
+ mGeometry = QRect(QPoint(0, 0), m_screenSize);
|
+
|
+ if (m_displayRect.isEmpty())
|
+ m_displayRect = mGeometry;
|
+
|
if(m_rotation % 180) {
|
int tmp = mGeometry.width();
|
mGeometry.setWidth(mGeometry.height());
|
@@ -472,6 +492,9 @@ bool QLinuxFbDrmScreen::initialize()
|
|
QRegion QLinuxFbDrmScreen::doRedraw()
|
{
|
+ qreal scaleX = qreal(m_displayRect.width()) / m_screenSize.width();
|
+ qreal scaleY = qreal(m_displayRect.height()) / m_screenSize.height();
|
+
|
const QRegion dirty = QFbScreen::doRedraw();
|
if (dirty.isEmpty())
|
return dirty;
|
@@ -498,6 +521,9 @@ QRegion QLinuxFbDrmScreen::doRedraw()
|
// Do not waste time with the default SourceOver.
|
pntr.setCompositionMode(QPainter::CompositionMode_Source);
|
for (const QRect &rect : qAsConst(output->dirty[output->backFb])) {
|
+ pntr.translate(m_displayRect.x(), m_displayRect.y());
|
+ pntr.scale(scaleX, scaleY);
|
+
|
if(m_rotation) {
|
if(m_rotation == 180)
|
pntr.translate(mGeometry.width()/2, mGeometry.height()/2);
|
diff --git a/src/plugins/platforms/linuxfb/qlinuxfbdrmscreen.h b/src/plugins/platforms/linuxfb/qlinuxfbdrmscreen.h
|
index 4065392d..679d851b 100644
|
--- a/src/plugins/platforms/linuxfb/qlinuxfbdrmscreen.h
|
+++ b/src/plugins/platforms/linuxfb/qlinuxfbdrmscreen.h
|
@@ -63,6 +63,8 @@ private:
|
QLinuxFbDevice *m_device;
|
|
int m_rotation;
|
+ QSize m_screenSize;
|
+ QRect m_displayRect;
|
};
|
|
QT_END_NAMESPACE
|
--
|
2.20.1
|
