/* This file is part of Telegram Desktop, the official desktop version of Telegram messaging app, see https://telegram.org Telegram Desktop is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. It is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. In addition, as a special exception, the copyright holders give permission to link the code of portions of this program with the OpenSSL library. Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org */ #pragma once #include "ui/effects/rect_shadow.h" class LayerWidget : public TWidget { Q_OBJECT public: virtual void parentResized() = 0; virtual void showDone() { } void setInnerFocus(); bool overlaps(const QRect &globalRect) { if (isHidden() || !testAttribute(Qt::WA_OpaquePaintEvent)) return false; return rect().contains(QRect(mapFromGlobal(globalRect.topLeft()), globalRect.size())); } protected: void mousePressEvent(QMouseEvent *e) override { e->accept(); } void resizeEvent(QResizeEvent *e) override { emit resized(); } virtual void doSetInnerFocus() { setFocus(); } signals: void closed(LayerWidget *layer); void resized(); }; class LayerStackWidget : public TWidget { Q_OBJECT public: LayerStackWidget(QWidget *parent); void showFast(); void showLayer(LayerWidget *l); void showSpecialLayer(LayerWidget *l); void appendLayer(LayerWidget *l); void prependLayer(LayerWidget *l); bool canSetFocus() const; void setInnerFocus(); bool contentOverlapped(const QRect &globalRect); void onCloseCurrent(); void onCloseLayers(); void onClose(); ~LayerStackWidget(); protected: void paintEvent(QPaintEvent *e) override; void keyPressEvent(QKeyEvent *e) override; void mousePressEvent(QMouseEvent *e) override; void resizeEvent(QResizeEvent *e) override; private slots: void onLayerDestroyed(QObject *obj); void onLayerClosed(LayerWidget *l); void onLayerResized(); private: void clearLayers(); void initChildLayer(LayerWidget *l); void activateLayer(LayerWidget *l); void updateLayerBox(); void fixOrder(); void sendFakeMouseEvent(); void startShow(); void startHide(); void startAnimation(float64 toOpacity); void step_background(float64 ms, bool timer); LayerWidget *layer() { return _layers.empty() ? nullptr : _layers.back(); } const LayerWidget *layer() const { return const_cast(this)->layer(); } using Layers = QList; Layers _layers; ChildWidget _specialLayer = { nullptr }; class BackgroundWidget; ChildWidget _background; anim::fvalue a_bg, a_layer; Animation _a_background; QPixmap _layerCache; QRect _layerCacheBox; QPixmap _hiddenSpecialLayerCache; QRect _hiddenSpecialLayerCacheBox; bool _hiding = false; }; class MediaPreviewWidget : public TWidget, private base::Subscriber { Q_OBJECT public: MediaPreviewWidget(QWidget *parent); void paintEvent(QPaintEvent *e); void resizeEvent(QResizeEvent *e); void step_shown(float64 ms, bool timer); void showPreview(DocumentData *document); void showPreview(PhotoData *photo); void hidePreview(); ~MediaPreviewWidget(); private: QSize currentDimensions() const; QPixmap currentImage() const; void startShow(); void fillEmojiString(); void resetGifAndCache(); anim::fvalue a_shown; Animation _a_shown; DocumentData *_document = nullptr; PhotoData *_photo = nullptr; Media::Clip::ReaderPointer _gif; int _emojiSize; QList _emojiList; void clipCallback(Media::Clip::Notification notification); enum CacheStatus { CacheNotLoaded, CacheThumbLoaded, CacheLoaded, }; mutable CacheStatus _cacheStatus = CacheNotLoaded; mutable QPixmap _cache; mutable QSize _cachedSize; };