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#include "DisplayQt.h"
 7
 8#include <QPainter>
 9
10#include <mgba/core/core.h>
11#include <mgba/core/thread.h>
12
13using namespace QGBA;
14
15DisplayQt::DisplayQt(QWidget* parent)
16	: Display(parent)
17	, m_isDrawing(false)
18	, m_backing(nullptr)
19{
20}
21
22void DisplayQt::startDrawing(mCoreThread* context) {
23	context->core->desiredVideoDimensions(context->core, &m_width, &m_height);
24	setSystemDimensions(m_width, m_height);
25	m_backing = std::move(QImage());
26	m_isDrawing = true;
27}
28
29void DisplayQt::lockAspectRatio(bool lock) {
30	Display::lockAspectRatio(lock);
31	update();
32}
33
34void DisplayQt::filter(bool filter) {
35	Display::filter(filter);
36	update();
37}
38
39void DisplayQt::framePosted(const uint32_t* buffer) {
40	update();
41	if (const_cast<const QImage&>(m_backing).bits() == reinterpret_cast<const uchar*>(buffer)) {
42		return;
43	}
44#ifdef COLOR_16_BIT
45#ifdef COLOR_5_6_5
46	m_backing = QImage(reinterpret_cast<const uchar*>(buffer), m_width, m_height, QImage::Format_RGB16);
47#else
48	m_backing = QImage(reinterpret_cast<const uchar*>(buffer), m_width, m_height, QImage::Format_RGB555);
49#endif
50#else
51	m_backing = QImage(reinterpret_cast<const uchar*>(buffer), m_width, m_height, QImage::Format_RGB32);
52#endif
53}
54
55void DisplayQt::paintEvent(QPaintEvent*) {
56	QPainter painter(this);
57	painter.fillRect(QRect(QPoint(), size()), Qt::black);
58	if (isFiltered()) {
59		painter.setRenderHint(QPainter::SmoothPixmapTransform);
60	}
61	QSize s = size();
62	QSize ds = viewportSize();
63	QPoint origin = QPoint((s.width() - ds.width()) / 2, (s.height() - ds.height()) / 2);
64	QRect full(origin, ds);
65
66#ifdef COLOR_5_6_5
67	painter.drawImage(full, m_backing, QRect(0, 0, m_width, m_height));
68#else
69	painter.drawImage(full, m_backing.rgbSwapped(), QRect(0, 0, m_width, m_height));
70#endif
71	messagePainter()->paint(&painter);
72}