tdesktop/Telegram/SourceFiles/ui/abstract_button.h

108 lines
2.2 KiB
C++

/*
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
#include <rpl/event_stream.h>
#include "ui/rp_widget.h"
#include "base/flags.h"
namespace Ui {
class AbstractButton : public RpWidget {
Q_OBJECT
public:
AbstractButton(QWidget *parent);
Qt::KeyboardModifiers clickModifiers() const {
return _modifiers;
}
void setDisabled(bool disabled = true);
virtual void clearState();
bool isOver() const {
return _state & StateFlag::Over;
}
bool isDown() const {
return _state & StateFlag::Down;
}
bool isDisabled() const {
return _state & StateFlag::Disabled;
}
void setPointerCursor(bool enablePointerCursor);
void setAcceptBoth(bool acceptBoth = true);
void setClickedCallback(Fn<void()> callback) {
_clickedCallback = std::move(callback);
}
rpl::producer<Qt::MouseButton> clicks() const {
return _clicks.events();
}
template <typename Handler>
void addClickHandler(Handler &&handler) {
clicks(
) | rpl::start_with_next(
std::forward<Handler>(handler),
lifetime());
}
protected:
void enterEventHook(QEvent *e) override;
void leaveEventHook(QEvent *e) override;
void mousePressEvent(QMouseEvent *e) override;
void mouseMoveEvent(QMouseEvent *e) override;
void mouseReleaseEvent(QMouseEvent *e) override;
signals:
void clicked();
protected:
enum class StateFlag {
None = 0,
Over = (1 << 0),
Down = (1 << 1),
Disabled = (1 << 2),
};
friend constexpr bool is_flag_type(StateFlag) { return true; };
using State = base::flags<StateFlag>;
State state() const {
return _state;
}
enum class StateChangeSource {
ByUser = 0x00,
ByPress = 0x01,
ByHover = 0x02,
};
void setOver(bool over, StateChangeSource source = StateChangeSource::ByUser);
virtual void onStateChanged(State was, StateChangeSource source) {
}
private:
void updateCursor();
void checkIfOver(QPoint localPos);
State _state = StateFlag::None;
bool _acceptBoth = false;
Qt::KeyboardModifiers _modifiers;
bool _enablePointerCursor = true;
Fn<void()> _clickedCallback;
rpl::event_stream<Qt::MouseButton> _clicks;
};
} // namespace Ui