tdesktop/Telegram/SourceFiles/layerwidget.h

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/*
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.
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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) 2014-2017 John Preston, https://desktop.telegram.org
*/
#pragma once
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namespace Window {
class MainMenu;
} // namespace Window
class LayerWidget : public TWidget {
Q_OBJECT
public:
using TWidget::TWidget;
virtual void parentResized() = 0;
virtual void showFinished() {
}
void setInnerFocus();
bool setClosing() {
if (!_closing) {
_closing = true;
closeHook();
return true;
}
return false;
}
bool overlaps(const QRect &globalRect);
void setClosedCallback(base::lambda<void()> callback) {
_closedCallback = std::move(callback);
}
void setResizedCallback(base::lambda<void()> callback) {
_resizedCallback = std::move(callback);
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}
protected:
void closeLayer() {
if (_closedCallback) {
_closedCallback();
}
}
void mousePressEvent(QMouseEvent *e) override {
e->accept();
}
void resizeEvent(QResizeEvent *e) override {
if (_resizedCallback) {
_resizedCallback();
}
}
virtual void doSetInnerFocus() {
setFocus();
}
virtual void closeHook() {
}
private:
bool _closing = false;
base::lambda<void()> _closedCallback;
base::lambda<void()> _resizedCallback;
};
class LayerStackWidget : public TWidget {
Q_OBJECT
public:
LayerStackWidget(QWidget *parent);
void finishAnimation();
void showBox(object_ptr<BoxContent> box);
void showSpecialLayer(object_ptr<LayerWidget> layer);
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void showMainMenu();
void appendBox(object_ptr<BoxContent> box);
void prependBox(object_ptr<BoxContent> box);
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bool canSetFocus() const;
void setInnerFocus();
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bool contentOverlapped(const QRect &globalRect);
void hideLayers();
void hideAll();
void hideTopLayer();
bool layerShown() const;
~LayerStackWidget();
protected:
void keyPressEvent(QKeyEvent *e) override;
void mousePressEvent(QMouseEvent *e) override;
void resizeEvent(QResizeEvent *e) override;
private slots:
void onLayerDestroyed(QObject *obj);
void onLayerClosed(LayerWidget *layer);
void onLayerResized();
private:
LayerWidget *pushBox(object_ptr<BoxContent> box);
void showFinished();
void hideCurrent();
enum class Action {
ShowMainMenu,
ShowSpecialLayer,
ShowLayer,
HideLayer,
HideAll,
};
template <typename SetupNew, typename ClearOld>
void startAnimation(SetupNew setupNewWidgets, ClearOld clearOldWidgets, Action action);
void prepareForAnimation();
void animationDone();
void setCacheImages();
void clearLayers();
void clearSpecialLayer();
void initChildLayer(LayerWidget *layer);
void updateLayerBoxes();
void fixOrder();
void sendFakeMouseEvent();
LayerWidget *currentLayer() {
return _layers.empty() ? nullptr : _layers.back();
}
const LayerWidget *currentLayer() const {
return const_cast<LayerStackWidget*>(this)->currentLayer();
}
using Layers = QList<LayerWidget*>;
Layers _layers;
object_ptr<LayerWidget> _specialLayer = { nullptr };
object_ptr<Window::MainMenu> _mainMenu = { nullptr };
class BackgroundWidget;
object_ptr<BackgroundWidget> _background;
};
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class MediaPreviewWidget : public TWidget, private base::Subscriber {
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Q_OBJECT
public:
MediaPreviewWidget(QWidget *parent);
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void showPreview(DocumentData *document);
void showPreview(PhotoData *photo);
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void hidePreview();
~MediaPreviewWidget();
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protected:
void paintEvent(QPaintEvent *e) override;
void resizeEvent(QResizeEvent *e) override;
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private:
QSize currentDimensions() const;
QPixmap currentImage() const;
void startShow();
void fillEmojiString();
void resetGifAndCache();
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Animation _a_shown;
bool _hiding = false;
DocumentData *_document = nullptr;
PhotoData *_photo = nullptr;
Media::Clip::ReaderPointer _gif;
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int _emojiSize;
QList<EmojiPtr> _emojiList;
void clipCallback(Media::Clip::Notification notification);
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enum CacheStatus {
CacheNotLoaded,
CacheThumbLoaded,
CacheLoaded,
};
mutable CacheStatus _cacheStatus = CacheNotLoaded;
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mutable QPixmap _cache;
mutable QSize _cachedSize;
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};
template <typename BoxType, typename ...Args>
inline object_ptr<BoxType> Box(Args&&... args) {
auto parent = static_cast<QWidget*>(nullptr);
return object_ptr<BoxType>(parent, std::forward<Args>(args)...);
}