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avadapter: consider devicePixelRatio and screen layout when sharing screens

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Gitlab: #395

Change-Id: Ic34a084fb9dc5a6605e3242ae7823db35e01a0d8
This commit is contained in:
Ming Rui Zhang 2021-05-03 15:16:03 -04:00 • committed by Andreas Traczyk
parent eb2eb786be
commit 2ae9521558
2 changed files with 52 additions and 17 deletions
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62
src/avadapter.cpp
View file

@ -80,6 +80,39 @@ AvAdapter::onVideoContextMenuDeviceItemClicked(const QString& deviceName)
lrcInstance_->avModel().switchInputTo(deviceId, getCurrentCallId());
}
// The top left corner of primary screen is (0, 0).
// For Qt, QScreen geometry contains x, y location relative to primary screen.
// The purpose of the function is to use calculate a boundingRect for virtual desktop
// to help screen sharing.
const QRect
AvAdapter::getAllScreensBoundingRect()
{
auto screens = QGuiApplication::screens();
// p0 is for x axis, p1 is for y axis,
// points contain values that are the maximum positive and negative domain value
QPoint p0(0, 0), p1(0, 0);
for (auto scr : screens) {
auto devicePixelRatio = scr->devicePixelRatio();
auto screenRect = scr->geometry();
if (screenRect.y() < 0 && p1.y() < abs(screenRect.y()))
p1.setY(abs(screenRect.y()));
else if (screenRect.y() >= 0
&& p1.x() < screenRect.y() + screenRect.height() * devicePixelRatio)
p1.setX(screenRect.y() + screenRect.height() * devicePixelRatio);
if (screenRect.x() < 0 && p0.y() < abs(screenRect.x()))
p0.setY(abs(screenRect.x()));
else if (screenRect.x() >= 0
&& p0.x() < screenRect.x() + screenRect.width() * devicePixelRatio)
p0.setX(screenRect.x() + screenRect.width() * devicePixelRatio);
}
return QRect(-p0.y(), -p1.y(), p0.y() + p0.x(), p1.y() + p1.x());
}
void
AvAdapter::shareEntireScreen(int screenNumber)
{
@ -91,24 +124,22 @@ AvAdapter::shareEntireScreen(int screenNumber)
lrcInstance_->avModel().setDisplay(getScreenNumber(),
rect.x(),
rect.y(),
rect.width(),
rect.height(),
rect.width() * screen->devicePixelRatio(),
rect.height() * screen->devicePixelRatio(),
getCurrentCallId());
}
void
AvAdapter::shareAllScreens()
{
auto screens = QGuiApplication::screens();
const auto arrangementRect = getAllScreensBoundingRect();
int width = 0, height = 0;
for (auto scr : screens) {
width += scr->geometry().width();
if (height < scr->geometry().height())
height = scr->geometry().height();
}
lrcInstance_->avModel().setDisplay(getScreenNumber(), 0, 0, width, height, getCurrentCallId());
lrcInstance_->avModel().setDisplay(getScreenNumber(),
arrangementRect.x(),
arrangementRect.y(),
arrangementRect.width(),
arrangementRect.height(),
getCurrentCallId());
}
void
@ -142,9 +173,10 @@ AvAdapter::captureAllScreens()
for (auto scr : screens) {
QPixmap pix = scr->grabWindow(0);
width += pix.width();
if (height < pix.height())
height = pix.height();
auto devicePixelRatio = scr->devicePixelRatio();
width += scr->geometry().width() * devicePixelRatio;
if (height < scr->geometry().height() * devicePixelRatio)
height = scr->geometry().height() * devicePixelRatio;
scrs << pix;
}
@ -153,7 +185,7 @@ AvAdapter::captureAllScreens()
final.fill(Qt::black);
for (auto scr : scrs) {
painter.drawPixmap(QPoint(currentPoint, 0), scr);
painter.drawPixmap(currentPoint, 0, scr.width(), scr.height(), scr);
currentPoint += scr.width();
}

3
src/avadapter.h
View file

@ -70,6 +70,9 @@ protected:
Q_INVOKABLE void stopAudioMeter(bool async);
private:
// Get screens arrangement rect relative to primary screen.
const QRect getAllScreensBoundingRect();
// Get current callId from current selected conv id.
QString getCurrentCallId();