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Code Issues Releases Wiki Activity

Support patterns with negative intensity.

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This commit is contained in:
John Preston
2021-08-17 17:35:10 +03:00
parent 5383ae3d96
commit 662966ba31
7 changed files with 109 additions and 42 deletions
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43
Telegram/SourceFiles/window/window_session_controller.cpp
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@@ -97,8 +97,13 @@ constexpr auto kBackgroundFadeDuration = crl::time(200);
if (!request.prepared.isNull()) {
QPainter p(&result);
if (!gradient.isNull()) {
p.setCompositionMode(QPainter::CompositionMode_SoftLight);
p.setOpacity(request.patternOpacity);
if (request.patternOpacity >= 0.) {
p.setCompositionMode(QPainter::CompositionMode_SoftLight);
p.setOpacity(request.patternOpacity);
} else {
p.setCompositionMode(
QPainter::CompositionMode_DestinationIn);
}
}
const auto &tiled = request.preparedForTiled;
const auto w = tiled.width() / cRetinaFactor();
@@ -112,9 +117,17 @@ constexpr auto kBackgroundFadeDuration = crl::time(200);
p.drawImage(QPointF(i * w, j * h), tiled);
}
}
if (!gradient.isNull()
&& request.patternOpacity < 0.
&& request.patternOpacity > -1.) {
p.setCompositionMode(QPainter::CompositionMode_SourceOver);
p.setOpacity(1. + request.patternOpacity);
p.fillRect(QRect(QPoint(), request.area), Qt::black);
}
}
return {
.image = std::move(result),
.image = std::move(result).convertToFormat(
QImage::Format_ARGB32_Premultiplied),
.gradient = gradient,
.area = request.area,
};
@@ -136,13 +149,23 @@ constexpr auto kBackgroundFadeDuration = crl::time(200);
result.setDevicePixelRatio(cRetinaFactor());
if (!gradient.isNull()) {
QPainter p(&result);
p.setCompositionMode(QPainter::CompositionMode_SoftLight);
p.setOpacity(request.patternOpacity);
if (request.patternOpacity >= 0.) {
p.setCompositionMode(QPainter::CompositionMode_SoftLight);
p.setOpacity(request.patternOpacity);
} else {
p.setCompositionMode(QPainter::CompositionMode_DestinationIn);
}
p.drawImage(QRect(QPoint(), rects.to.size()), image);
if (request.patternOpacity < 0. && request.patternOpacity > -1.) {
p.setCompositionMode(QPainter::CompositionMode_SourceOver);
p.setOpacity(1. + request.patternOpacity);
p.fillRect(QRect(QPoint(), rects.to.size()), Qt::black);
}
}
image = QImage();
return {
.image = std::move(result),
.image = std::move(result).convertToFormat(
QImage::Format_ARGB32_Premultiplied),
.gradient = gradient,
.area = request.area,
.x = rects.to.x(),
@@ -1424,7 +1447,13 @@ void SessionController::openDocument(
const BackgroundState &SessionController::backgroundState(QSize area) {
_backgroundState.shown = _backgroundFade.value(1.);
if (_backgroundState.now.area != area) {
if (_backgroundState.now.pixmap.isNull()
&& !Window::Theme::Background()->gradientForFill().isNull()) {
// We don't support direct painting of patterned gradients.
// So we need to sync-generate cache image here.
setCachedBackground(CacheBackground(currentCacheRequest(area)));
_cacheBackgroundTimer.cancel();
} else if (_backgroundState.now.area != area) {
if (_willCacheForArea != area
|| (!_cacheBackgroundTimer.isActive()
&& !_backgroundCachingRequest)) {