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
10extern "C" {
11#include "gba/video.h"
12}
13
14using namespace QGBA;
15
16DisplayQt::DisplayQt(QWidget* parent)
17	: Display(parent)
18	, m_backing(nullptr)
19{
20}
21
22void DisplayQt::startDrawing(GBAThread*) {
23}
24
25void DisplayQt::lockAspectRatio(bool lock) {
26	Display::lockAspectRatio(lock);
27	update();
28}
29
30void DisplayQt::filter(bool filter) {
31	Display::filter(filter);
32	update();
33}
34
35void DisplayQt::framePosted(const uint32_t* buffer) {
36	update();
37	if (const_cast<const QImage&>(m_backing).bits() == reinterpret_cast<const uchar*>(buffer)) {
38		return;
39	}
40#ifdef COLOR_16_BIT
41#ifdef COLOR_5_6_5
42	m_backing = QImage(reinterpret_cast<const uchar*>(buffer), 256, 256, QImage::Format_RGB16);
43#else
44	m_backing = QImage(reinterpret_cast<const uchar*>(buffer), 256, 256, QImage::Format_RGB555);
45#endif
46#else
47	m_backing = QImage(reinterpret_cast<const uchar*>(buffer), 256, 256, QImage::Format_RGB32);
48#endif
49}
50
51void DisplayQt::paintEvent(QPaintEvent*) {
52	QPainter painter(this);
53	painter.fillRect(QRect(QPoint(), size()), Qt::black);
54	if (isFiltered()) {
55		painter.setRenderHint(QPainter::SmoothPixmapTransform);
56	}
57	QSize s = size();
58	QSize ds = s;
59	if (isAspectRatioLocked()) {
60		if (s.width() * 2 > s.height() * 3) {
61			ds.setWidth(s.height() * 3 / 2);
62		} else if (s.width() * 2 < s.height() * 3) {
63			ds.setHeight(s.width() * 2 / 3);
64		}
65	}
66	QPoint origin = QPoint((s.width() - ds.width()) / 2, (s.height() - ds.height()) / 2);
67	QRect full(origin, ds);
68
69#ifdef COLOR_5_6_5
70	painter.drawImage(full, m_backing, QRect(0, 0, VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS));
71#else
72	painter.drawImage(full, m_backing.rgbSwapped(), QRect(0, 0, VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS));
73#endif
74	messagePainter()->paint(&painter);
75}