citra/src/citra_qt/configuration/configure_touch_widget.h

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// Copyright 2020 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <optional>
#include <utility>
#include <vector>
#include <QFrame>
#include <QPointer>
class QLabel;
// Widget for representing touchscreen coordinates
class TouchScreenPreview : public QFrame {
Q_OBJECT
Q_PROPERTY(QColor dotHighlightColor MEMBER dot_highlight_color)
public:
TouchScreenPreview(QWidget* parent);
~TouchScreenPreview() override;
void SetCoordLabel(QLabel* const);
int AddDot(const int device_x, const int device_y);
void RemoveDot(const int id);
void HighlightDot(const int id, const bool active = true) const;
void MoveDot(const int id, const int device_x, const int device_y) const;
signals:
void DotAdded(const QPoint& pos);
void DotSelected(const int dot_id);
void DotMoved(const int dot_id, const QPoint& pos);
protected:
virtual void resizeEvent(QResizeEvent*) override;
virtual void mouseMoveEvent(QMouseEvent*) override;
virtual void leaveEvent(QEvent*) override;
virtual void mousePressEvent(QMouseEvent*) override;
virtual bool eventFilter(QObject*, QEvent*) override;
private:
std::optional<QPoint> MapToDeviceCoords(const int screen_x, const int screen_y) const;
void PositionDot(QLabel* const dot, const int device_x = -1, const int device_y = -1) const;
bool ignore_resize = false;
QPointer<QLabel> coord_label;
std::vector<std::pair<int, QLabel*>> dots;
int max_dot_id = 0;
QColor dot_highlight_color;
static constexpr char prop_id[] = "dot_id";
static constexpr char prop_x[] = "device_x";
static constexpr char prop_y[] = "device_y";
struct {
bool active = false;
QPointer<QLabel> dot;
QPoint start_pos;
} drag_state;
};