1/* Copyright (c) 2013-2015 Jeffrey Pfau
  2 *
  3 * This Source Code Form is subject to the terms of the Mozilla Public
  4 * License, v. 2.0. If a copy of the MPL was not distributed with this
  5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
  6#ifndef QGBA_DISPLAY_GL
  7#define QGBA_DISPLAY_GL
  8
  9#include "Display.h"
 10
 11#include <QGLWidget>
 12#include <QList>
 13#include <QMouseEvent>
 14#include <QQueue>
 15#include <QThread>
 16#include <QTimer>
 17
 18struct GBAThread;
 19struct VideoBackend;
 20
 21namespace QGBA {
 22
 23class EmptyGLWidget : public QGLWidget {
 24public:
 25	EmptyGLWidget(const QGLFormat& format, QWidget* parent) : QGLWidget(format, parent) { setAutoBufferSwap(false); }
 26
 27protected:
 28	void paintEvent(QPaintEvent*) override {}
 29	void resizeEvent(QResizeEvent*) override {}
 30	void mouseMoveEvent(QMouseEvent* event) override { event->ignore(); }
 31};
 32
 33class PainterGL;
 34class DisplayGL : public Display {
 35Q_OBJECT
 36
 37public:
 38	DisplayGL(const QGLFormat& format, QWidget* parent = nullptr);
 39	~DisplayGL();
 40
 41	bool isDrawing() const override { return m_isDrawing; }
 42
 43public slots:
 44	void startDrawing(GBAThread* context) override;
 45	void stopDrawing() override;
 46	void pauseDrawing() override;
 47	void unpauseDrawing() override;
 48	void forceDraw() override;
 49	void lockAspectRatio(bool lock) override;
 50	void filter(bool filter) override;
 51	void framePosted(const uint32_t*) override;
 52
 53protected:
 54	virtual void paintEvent(QPaintEvent*) override {}
 55	virtual void resizeEvent(QResizeEvent*) override;
 56
 57private:
 58	void resizePainter();
 59
 60	bool m_isDrawing;
 61	QGLWidget* m_gl;
 62	PainterGL* m_painter;
 63	QThread* m_drawThread;
 64	GBAThread* m_context;
 65};
 66
 67class PainterGL : public QObject {
 68Q_OBJECT
 69
 70public:
 71	PainterGL(QGLWidget* parent, QGLFormat::OpenGLVersionFlags = QGLFormat::OpenGL_Version_1_1);
 72	~PainterGL();
 73
 74	void setContext(GBAThread*);
 75	void setMessagePainter(MessagePainter*);
 76	void enqueue(const uint32_t* backing);
 77
 78public slots:
 79	void forceDraw();
 80	void draw();
 81	void start();
 82	void stop();
 83	void pause();
 84	void unpause();
 85	void resize(const QSize& size);
 86	void lockAspectRatio(bool lock);
 87	void filter(bool filter);
 88
 89private:
 90	void performDraw();
 91	void dequeue();
 92	void dequeueAll();
 93
 94	QList<uint32_t*> m_free;
 95	QQueue<uint32_t*> m_queue;
 96	QPainter m_painter;
 97	QMutex m_mutex;
 98	QGLWidget* m_gl;
 99	bool m_active;
100	GBAThread* m_context;
101	VideoBackend* m_backend;
102	QSize m_size;
103	MessagePainter* m_messagePainter;
104};
105
106}
107
108#endif