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
10using namespace QGBA;
11
12DisplayQt::DisplayQt(QWidget* parent)
13	: Display(parent)
14	, m_lockAspectRatio(false)
15	, m_filter(false)
16{
17}
18
19void DisplayQt::startDrawing(const uint32_t* buffer, GBAThread* context) {
20	m_context = context;
21#ifdef COLOR_16_BIT
22#ifdef COLOR_5_6_5
23	m_backing = QImage(reinterpret_cast<const uchar*>(buffer), 256, 256, QImage::Format_RGB16);
24#else
25	m_backing = QImage(reinterpret_cast<const uchar*>(buffer), 256, 256, QImage::Format_RGB555);
26#endif
27#else
28	m_backing = QImage(reinterpret_cast<const uchar*>(buffer), 256, 256, QImage::Format_RGB32);
29#endif
30}
31
32void DisplayQt::lockAspectRatio(bool lock) {
33	m_lockAspectRatio = lock;
34	update();
35}
36
37void DisplayQt::filter(bool filter) {
38	m_filter = filter;
39	update();
40}
41
42void DisplayQt::paintEvent(QPaintEvent*) {
43	QPainter painter(this);
44	painter.fillRect(QRect(QPoint(), size()), Qt::black);
45	if (m_filter) {
46		painter.setRenderHint(QPainter::SmoothPixmapTransform);
47	}
48	QSize s = size();
49	QSize ds = s;
50	if (s.width() * 2 > s.height() * 3) {
51		ds.setWidth(s.height() * 3 / 2);
52	} else if (s.width() * 2 < s.height() * 3) {
53		ds.setHeight(s.width() * 2 / 3);
54	}
55	QPoint origin = QPoint((s.width() - ds.width()) / 2, (s.height() - ds.height()) / 2);
56	QRect full(origin, ds);
57
58#ifdef COLOR_5_6_5
59	painter.drawImage(full, m_backing, QRect(0, 0, 240, 160));
60#else
61	painter.drawImage(full, m_backing.rgbSwapped(), QRect(0, 0, 240, 160));
62#endif
63}