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Improve pattern wallpaper preview in Settings.

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This commit is contained in:
John Preston 2021-08-20 16:14:09 +03:00
parent 1e8e163bb1
commit aaf0015be4
1 changed files with 14 additions and 11 deletions
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25
Telegram/SourceFiles/settings/settings_chat.cpp
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@ -57,6 +57,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
#include "facades.h"
#include "styles/style_settings.h"
#include "styles/style_layers.h"
#include "styles/style_window.h"
namespace Settings {
namespace {
@ -581,26 +582,28 @@ void BackgroundRow::updateImage() {
}
const auto &prepared = background->prepared();
if (!prepared.isNull()) {
const auto sx = (prepared.width() > prepared.height())
? ((prepared.width() - prepared.height()) / 2)
: 0;
const auto sy = (prepared.height() > prepared.width())
? ((prepared.height() - prepared.width()) / 2)
: 0;
const auto s = (prepared.width() > prepared.height())
? prepared.height()
: prepared.width();
const auto pattern = background->paper().isPattern();
const auto w = prepared.width();
const auto h = prepared.height();
const auto use = [&] {
if (!pattern) {
return std::min(w, h);
}
const auto scaledw = w * st::windowMinHeight / h;
const auto result = (w * size) / scaledw;
return std::min({ result, w, h });
}();
p.drawImage(
QRect(0, 0, size, size),
prepared,
QRect(sx, sy, s, s));
QRect((w - use) / 2, (h - use) / 2, use, use));
}
if (!gradient.isNull()
&& !prepared.isNull()
&& patternOpacity < 0.
&& patternOpacity > -1.) {
p.setCompositionMode(QPainter::CompositionMode_SourceOver);
p.setOpacity(patternOpacity);
p.setOpacity(1. + patternOpacity);
p.fillRect(QRect(0, 0, size, size), Qt::black);
}
}