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
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Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
*/
#pragma once
#include "gui/boxshadow.h"
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class LayeredWidget : public TWidget {
Q_OBJECT
public:
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virtual void showStep(float64 ms) {
}
virtual void parentResized() = 0;
virtual void startHide() {
}
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virtual void setInnerFocus() {
setFocus();
}
virtual void resizeEvent(QResizeEvent *e) {
emit resized();
}
void mousePressEvent(QMouseEvent *e) {
e->accept();
}
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bool overlaps(const QRect &globalRect) {
if (isHidden() || !testAttribute(Qt::WA_OpaquePaintEvent)) return false;
return rect().contains(QRect(mapFromGlobal(globalRect.topLeft()), globalRect.size()));
}
signals:
void closed();
void resized();
};
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class BackgroundWidget : public TWidget {
Q_OBJECT
public:
BackgroundWidget(QWidget *parent, LayeredWidget *w);
void showFast();
void paintEvent(QPaintEvent *e);
void keyPressEvent(QKeyEvent *e);
void mousePressEvent(QMouseEvent *e);
void resizeEvent(QResizeEvent *e);
void updateAdaptiveLayout();
void replaceInner(LayeredWidget *n);
void showLayerLast(LayeredWidget *n);
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void step_background(float64 ms, bool timer);
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bool canSetFocus() const;
void setInnerFocus();
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bool contentOverlapped(const QRect &globalRect);
~BackgroundWidget();
public slots:
void onClose();
bool onInnerClose();
void boxDestroyed(QObject *obj);
private:
void startHide();
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LayeredWidget *w;
typedef QList<LayeredWidget*> HiddenLayers;
HiddenLayers _hidden;
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anim::fvalue a_bg;
Animation _a_background;
bool hiding;
BoxShadow shadow;
};
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class StickerPreviewWidget : public TWidget {
Q_OBJECT
public:
StickerPreviewWidget(QWidget *parent);
void paintEvent(QPaintEvent *e);
void resizeEvent(QResizeEvent *e);
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void step_shown(float64 ms, bool timer);
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void showPreview(DocumentData *sticker);
void hidePreview();
~StickerPreviewWidget();
private:
QSize currentDimensions() const;
QPixmap currentImage() const;
anim::fvalue a_shown;
Animation _a_shown;
DocumentData *_doc;
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ClipReader *_gif;
bool gif() const {
return (!_gif || _gif == BadClipReader) ? false : true;
}
void clipCallback(ClipReaderNotification notification);
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enum CacheStatus {
CacheNotLoaded,
CacheThumbLoaded,
CacheLoaded,
};
mutable CacheStatus _cacheStatus;
mutable QPixmap _cache;
};