tdesktop/Telegram/SourceFiles/window/section_widget.h

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/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#pragma once
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#include "ui/rp_widget.h"
#include "dialogs/dialogs_key.h"
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#include "base/object_ptr.h"
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namespace Main {
class Session;
} // namespace Main
namespace Window {
class SessionController;
class LayerWidget;
class SlideAnimation;
struct SectionShow;
enum class SlideDirection;
enum class Column {
First,
Second,
Third,
};
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class AbstractSectionWidget
: public Ui::RpWidget
, protected base::Subscriber {
public:
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AbstractSectionWidget(
QWidget *parent,
not_null<Window::SessionController*> controller)
: RpWidget(parent)
, _controller(controller) {
}
[[nodiscard]] Main::Session &session() const;
// Tabbed selector management.
virtual void pushTabbedSelectorToThirdSection(
const Window::SectionShow &params) {
}
virtual bool returnTabbedSelector() {
return false;
}
// Float player interface.
virtual bool wheelEventFromFloatPlayer(QEvent *e) {
return false;
}
[[nodiscard]] virtual QRect rectForFloatPlayer() const {
return mapToGlobal(rect());
}
protected:
[[nodiscard]] not_null<Window::SessionController*> controller() const {
return _controller;
}
private:
const not_null<Window::SessionController*> _controller;
};
class SectionMemento;
struct SectionSlideParams {
QPixmap oldContentCache;
bool withTopBarShadow = false;
bool withTabs = false;
bool withFade = false;
explicit operator bool() const {
return !oldContentCache.isNull();
}
};
class SectionWidget : public AbstractSectionWidget {
public:
SectionWidget(QWidget *parent, not_null<Window::SessionController*> controller);
virtual Dialogs::RowDescriptor activeChat() const {
return {};
}
// When resizing the widget with top edge moved up or down and we
// want to add this top movement to the scroll position, so inner
// content will not move.
void setGeometryWithTopMoved(const QRect &newGeometry, int topDelta);
virtual bool hasTopBarShadow() const {
return false;
}
virtual bool forceAnimateBack() const {
return false;
}
void showAnimated(
SlideDirection direction,
const SectionSlideParams &params);
void showFast();
// This can be used to grab with or without top bar shadow.
// This will be protected when animation preparation will be done inside.
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virtual QPixmap grabForShowAnimation(const SectionSlideParams &params);
// Attempt to show the required section inside the existing one.
// For example if this section already shows exactly the required
// memento it can simply return true - it is shown already.
//
// If this method returns false it is not supposed to modify the memento.
// If this method returns true it may modify the memento ("take" heavy items).
virtual bool showInternal(
not_null<SectionMemento*> memento,
const SectionShow &params) = 0;
// Create a memento of that section to store it in the history stack.
// This method may modify the section ("take" heavy items).
virtual std::unique_ptr<SectionMemento> createMemento();
void setInnerFocus() {
doSetInnerFocus();
}
virtual rpl::producer<int> desiredHeight() const;
// Some sections convert to layers on some geometry sizes.
virtual object_ptr<LayerWidget> moveContentToLayer(
QRect bodyGeometry) {
return nullptr;
}
static void PaintBackground(not_null<QWidget*> widget, QRect clip);
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protected:
void paintEvent(QPaintEvent *e) override;
// Temp variable used in resizeEvent() implementation, that is passed
// to setGeometryWithTopMoved() to adjust the scroll position with the resize.
int topDelta() const {
return _topDelta;
}
// Called after the hideChildren() call in showAnimated().
virtual void showAnimatedHook(
const Window::SectionSlideParams &params) {
}
// Called after the showChildren() call in showFinished().
virtual void showFinishedHook() {
}
virtual void doSetInnerFocus() {
setFocus();
}
bool animating() const {
return _showAnimation != nullptr;
}
~SectionWidget();
private:
void showFinished();
std::unique_ptr<SlideAnimation> _showAnimation;
// Saving here topDelta in setGeometryWithTopMoved() to get it passed to resizeEvent().
int _topDelta = 0;
};
} // namespace Window