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Fix delayed pattern-with-negative-intensity appearance.

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This commit is contained in:
John Preston 2021-09-14 16:36:30 +03:00
parent 7f20cc7b44
commit e492bbb883
3 changed files with 12 additions and 2 deletions
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6
Telegram/SourceFiles/ui/chat/chat_theme.cpp
View File

@ -124,6 +124,9 @@ constexpr auto kMinAcceptableContrast = 1.14;// 4.5;
QImage::Format_ARGB32_Premultiplied),
.gradient = gradient,
.area = request.area,
.waitingForNegativePattern = (request.background.isPattern
&& request.background.prepared.isNull()
&& request.background.patternOpacity < 0.)
};
} else {
const auto rects = ComputeChatBackgroundRects(
@ -206,7 +209,8 @@ CachedBackground::CachedBackground(CacheBackgroundResult &&result)
: pixmap(PixmapFromImage(std::move(result.image)))
, area(result.area)
, x(result.x)
, y(result.y) {
, y(result.y)
, waitingForNegativePattern(result.waitingForNegativePattern) {
}
ChatTheme::ChatTheme() {

2
Telegram/SourceFiles/ui/chat/chat_theme.h
View File

@ -79,6 +79,7 @@ struct CacheBackgroundResult {
QSize area;
int x = 0;
int y = 0;
bool waitingForNegativePattern = false;
};
struct CachedBackground {
@ -89,6 +90,7 @@ struct CachedBackground {
QSize area;
int x = 0;
int y = 0;
bool waitingForNegativePattern = false;
};
struct BackgroundState {

6
Telegram/SourceFiles/window/section_widget.cpp
View File

@ -191,7 +191,11 @@ void SectionWidget::PaintBackground(
const auto to = QRect(
QPoint(cache.x, fromy + cache.y),
cache.pixmap.size() / cIntRetinaFactor());
if (cache.area == fill) {
if (cache.waitingForNegativePattern) {
// While we wait for pattern being loaded we paint just gradient.
// But in case of negative patter opacity we just fill-black.
p.fillRect(to, Qt::black);
} else if (cache.area == fill) {
p.drawPixmap(to, cache.pixmap);
} else {
const auto sx = fill.width() / float64(cache.area.width());