mirror of
https://github.com/AyuGram/AyuGramDesktop.git
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23rd
66 lines
1.6 KiB
C++
66 lines
1.6 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 "poll/poll_link_thumbnail.h"
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#include "ui/painter.h"
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#include "styles/style_polls.h"
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namespace Poll {
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namespace {
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class LinkThumbnail final : public Ui::DynamicImage {
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public:
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std::shared_ptr<Ui::DynamicImage> clone() override {
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return std::make_shared<LinkThumbnail>();
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}
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QImage image(int size) override {
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const auto good = (_frame.width()
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== size * _frame.devicePixelRatio());
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const auto paletteVersion = style::PaletteVersion();
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if (!good || _paletteVersion != paletteVersion) {
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_paletteVersion = paletteVersion;
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const auto ratio = style::DevicePixelRatio();
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if (!good) {
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_frame = QImage(
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QSize(size, size) * ratio,
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QImage::Format_ARGB32_Premultiplied);
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_frame.setDevicePixelRatio(ratio);
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}
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_frame.fill(Qt::transparent);
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auto p = Painter(&_frame);
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auto hq = PainterHighQualityEnabler(p);
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p.setPen(Qt::NoPen);
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p.setBrush(st::windowBgOver);
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const auto radius = size / 4.;
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p.drawRoundedRect(QRect(0, 0, size, size), radius, radius);
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st::historyPollLinkPlaceholderIcon.paintInCenter(
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p,
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QRect(0, 0, size, size));
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}
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return _frame;
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}
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void subscribeToUpdates(Fn<void()> callback) override {
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if (!callback) {
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_frame = {};
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}
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}
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private:
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int _paletteVersion = 0;
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QImage _frame;
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};
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} // namespace
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std::shared_ptr<Ui::DynamicImage> MakeLinkThumbnail() {
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return std::make_shared<LinkThumbnail>();
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}
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} // namespace Poll
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