tdesktop/Telegram/SourceFiles/layerwidget.h

177 lines
4.0 KiB
C++

/*
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<LayerStackWidget*>(this)->layer();
}
using Layers = QList<LayerWidget*>;
Layers _layers;
ChildWidget<LayerWidget> _specialLayer = { nullptr };
class BackgroundWidget;
ChildWidget<BackgroundWidget> _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<EmojiPtr> _emojiList;
void clipCallback(Media::Clip::Notification notification);
enum CacheStatus {
CacheNotLoaded,
CacheThumbLoaded,
CacheLoaded,
};
mutable CacheStatus _cacheStatus = CacheNotLoaded;
mutable QPixmap _cache;
mutable QSize _cachedSize;
};