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	, m_lockAspectRatio(false)
20	, m_filter(false)
21{
22}
23
24void DisplayQt::startDrawing(GBAThread*) {
25}
26
27void DisplayQt::lockAspectRatio(bool lock) {
28	m_lockAspectRatio = lock;
29	update();
30}
31
32void DisplayQt::filter(bool filter) {
33	m_filter = filter;
34	update();
35}
36
37void DisplayQt::framePosted(const uint32_t* buffer) {
38	update();
39	if (const_cast<const QImage&>(m_backing).bits() == reinterpret_cast<const uchar*>(buffer)) {
40		return;
41	}
42#ifdef COLOR_16_BIT
43#ifdef COLOR_5_6_5
44	m_backing = QImage(reinterpret_cast<const uchar*>(buffer), 256, 256, QImage::Format_RGB16);
45#else
46	m_backing = QImage(reinterpret_cast<const uchar*>(buffer), 256, 256, QImage::Format_RGB555);
47#endif
48#else
49	m_backing = QImage(reinterpret_cast<const uchar*>(buffer), 256, 256, QImage::Format_RGB32);
50#endif
51}
52
53void DisplayQt::showMessage(const QString& message) {
54	m_messagePainter.showMessage(message);
55}
56
57void DisplayQt::paintEvent(QPaintEvent*) {
58	QPainter painter(this);
59	painter.fillRect(QRect(QPoint(), size()), Qt::black);
60	if (m_filter) {
61		painter.setRenderHint(QPainter::SmoothPixmapTransform);
62	}
63	QSize s = size();
64	QSize ds = s;
65	if (m_lockAspectRatio) {
66		if (s.width() * 2 > s.height() * 3) {
67			ds.setWidth(s.height() * 3 / 2);
68		} else if (s.width() * 2 < s.height() * 3) {
69			ds.setHeight(s.width() * 2 / 3);
70		}
71	}
72	QPoint origin = QPoint((s.width() - ds.width()) / 2, (s.height() - ds.height()) / 2);
73	QRect full(origin, ds);
74
75#ifdef COLOR_5_6_5
76	painter.drawImage(full, m_backing, QRect(0, 0, VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS));
77#else
78	painter.drawImage(full, m_backing.rgbSwapped(), QRect(0, 0, VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS));
79#endif
80	m_messagePainter.paint(&painter);
81}
82
83void DisplayQt::resizeEvent(QResizeEvent*) {
84	m_messagePainter.resize(size(), m_lockAspectRatio);
85}