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54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "info/userpic/info_userpic_emoji_builder_common.h"
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#include "ui/image/image_prepare.h"
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#include "ui/userpic_view.h" // ForumUserpicRadiusMultiplier.
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namespace UserpicBuilder {
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[[nodiscard]] QImage GenerateGradient(
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const QSize &size,
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const std::vector<QColor> &colors,
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bool circle,
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bool roundForumRect) {
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constexpr auto kRotation = int(45);
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auto gradient = Images::GenerateGradient(size, colors, kRotation);
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if (!circle && !roundForumRect) {
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return gradient;
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}
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const auto processModifier = [&](QImage &&i) {
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if (circle) {
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return Images::Circle(std::move(i));
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} else if (roundForumRect) {
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const auto radius = std::min(i.height(), i.width())
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* Ui::ForumUserpicRadiusMultiplier();
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return Images::Round(
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std::move(i),
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Images::CornersMask(radius / style::DevicePixelRatio()));
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} else {
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return std::move(i);
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}
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};
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if (style::DevicePixelRatio() == 1) {
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return processModifier(std::move(gradient));
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}
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auto image = QImage(
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size * style::DevicePixelRatio(),
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QImage::Format_ARGB32_Premultiplied);
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image.setDevicePixelRatio(style::DevicePixelRatio());
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image.fill(Qt::transparent);
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{
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auto p = QPainter(&image);
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p.drawImage(QRect(QPoint(), size), gradient);
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}
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return processModifier(std::move(image));
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}
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} // namespace UserpicBuilder
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