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Code Issues Releases Wiki Activity

Allow huge range of interface scales.

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This commit is contained in:
John Preston
2023-01-05 14:48:46 +04:00
parent 3532e187fd
commit ff331c040a
16 changed files with 987 additions and 69 deletions
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47
Telegram/SourceFiles/window/section_widget.cpp
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@@ -187,20 +187,43 @@ void SectionWidget::PaintBackground(
not_null<Ui::ChatTheme*> theme,
not_null<QWidget*> widget,
QRect clip) {
auto p = QPainter(widget);
PaintBackground(
theme,
widget,
controller->content()->height(),
controller->content()->backgroundFromY(),
clip);
}
void SectionWidget::PaintBackground(
not_null<Ui::ChatTheme*> theme,
not_null<QWidget*> widget,
int fillHeight,
int fromy,
QRect clip) {
auto p = QPainter(widget);
if (fromy) {
p.translate(0, fromy);
clip = clip.translated(0, -fromy);
}
PaintBackground(p, theme, QSize(widget->width(), fillHeight), clip);
}
void SectionWidget::PaintBackground(
QPainter &p,
not_null<Ui::ChatTheme*> theme,
QSize fill,
QRect clip) {
const auto &background = theme->background();
if (background.colorForFill) {
p.fillRect(clip, *background.colorForFill);
return;
}
const auto &gradient = background.gradientForFill;
const auto fill = QSize(widget->width(), controller->content()->height());
auto fromy = controller->content()->backgroundFromY();
auto state = theme->backgroundState(fill);
const auto paintCache = [&](const Ui::CachedBackground &cache) {
const auto to = QRect(
QPoint(cache.x, fromy + cache.y),
QPoint(cache.x, cache.y),
cache.pixmap.size() / cIntRetinaFactor());
if (cache.waitingForNegativePattern) {
// While we wait for pattern being loaded we paint just gradient.
@@ -229,11 +252,15 @@ void SectionWidget::PaintBackground(
const auto goodNow = hasNow && (state.now.area == fill);
const auto useCache = goodNow || !gradient.isNull();
if (useCache) {
if (state.shown < 1. && !gradient.isNull()) {
const auto fade = (state.shown < 1. && !gradient.isNull());
if (fade) {
paintCache(state.was);
p.setOpacity(state.shown);
}
paintCache(state.now);
if (fade) {
p.setOpacity(1.);
}
return;
}
const auto &prepared = background.prepared;
@@ -259,12 +286,12 @@ void SectionWidget::PaintBackground(
const auto w = tiled.width() / cRetinaFactor();
const auto h = tiled.height() / cRetinaFactor();
const auto sx = qFloor(left / w);
const auto sy = qFloor((top - fromy) / h);
const auto sy = qFloor(top / h);
const auto cx = qCeil(right / w);
const auto cy = qCeil((bottom - fromy) / h);
const auto cy = qCeil(bottom / h);
for (auto i = sx; i < cx; ++i) {
for (auto j = sy; j < cy; ++j) {
p.drawImage(QPointF(i * w, fromy + j * h), tiled);
p.drawImage(QPointF(i * w, j * h), tiled);
}
}
} else {
@@ -272,9 +299,7 @@ void SectionWidget::PaintBackground(
const auto rects = Ui::ComputeChatBackgroundRects(
fill,
prepared.size());
auto to = rects.to;
to.moveTop(to.top() + fromy);
p.drawImage(to, prepared, rects.from);
p.drawImage(rects.to, prepared, rects.from);
}
}