100 lines
2.5 KiB
C
100 lines
2.5 KiB
C
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/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram messaging app, see https://telegram.org
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Telegram Desktop is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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It is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
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*/
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#pragma once
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namespace Window {
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namespace Theme {
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namespace internal {
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constexpr int32 kUninitializedBackground = -3;
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} // namespace internal
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constexpr int32 kThemeBackground = -2;
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constexpr int32 kCustomBackground = -1;
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constexpr int32 kOldBackground = 0;
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constexpr int32 kDefaultBackground = 21;
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struct Cached {
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QByteArray colors;
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QByteArray background;
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bool tiled = false;
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int32 paletteChecksum = 0;
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int32 contentChecksum = 0;
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};
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bool Load(const QString &pathRelative, const QString &pathAbsolute, const QByteArray &content, Cached &cache);
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void Unload();
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struct Instance {
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style::palette palette;
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QImage background;
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Cached cached;
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bool tiled = false;
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};
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bool LoadFromFile(const QString &file, Instance *out, QByteArray *outContent);
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struct BackgroundUpdate {
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enum class Type {
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New,
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Changed,
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Start,
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};
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BackgroundUpdate(Type type, bool tiled) : type(type), tiled(tiled) {
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}
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Type type;
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bool tiled;
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};
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class ChatBackground : public base::Observable<BackgroundUpdate> {
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public:
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// This method is allowed to (and should) be called before start().
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void setThemeData(QImage &&themeImage, bool themeTile);
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// This method is setting the default (themed) image if none was set yet.
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void start();
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void setImage(int32 id, QImage &&image = QImage());
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void setTile(bool tile);
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void reset() {
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setImage(kThemeBackground);
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}
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int32 id() const;
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const QPixmap &image() const;
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bool tile() const;
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private:
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void setPreparedImage(QImage &&image);
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int32 _id = internal::kUninitializedBackground;
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QPixmap _image;
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bool _tile = false;
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QImage _themeImage;
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bool _themeTile = false;
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};
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ChatBackground *Background();
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} // namespace Theme
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} // namespace Window
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