1/* Copyright (c) 2013-2016 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 "TilePainter.h"
 7
 8#include <QImage>
 9#include <QMouseEvent>
10#include <QPainter>
11
12using namespace QGBA;
13
14TilePainter::TilePainter(QWidget* parent)
15	: QWidget(parent)
16{
17	m_backing.fill(Qt::transparent);
18	resize(256, 768);
19	setTileCount(3072);
20}
21
22void TilePainter::paintEvent(QPaintEvent* event) {
23	QPainter painter(this);
24	painter.drawPixmap(QPoint(), m_backing);
25}
26
27void TilePainter::resizeEvent(QResizeEvent* event) {
28	int w = width() / m_size;
29	int calculatedHeight = (m_tileCount + w - 1) * m_size / w;
30	calculatedHeight -= calculatedHeight % m_size;
31	if (width() / m_size != m_backing.width() / m_size || m_backing.height() != calculatedHeight) {
32		m_backing = QPixmap(width(), calculatedHeight);
33		m_backing.fill(Qt::transparent);
34	}
35}
36
37void TilePainter::mousePressEvent(QMouseEvent* event) {
38	int x = event->x() / m_size;
39	int y = event->y() / m_size;
40	emit indexPressed(y * (width() / m_size) + x);
41}
42
43void TilePainter::setTile(int index, const color_t* data) {
44	QPainter painter(&m_backing);
45	int w = width() / m_size;
46	int x = index % w;
47	int y = index / w;
48	QRect r(x * m_size, y * m_size, m_size, m_size);
49	QImage tile(reinterpret_cast<const uchar*>(data), 8, 8, QImage::Format_ARGB32);
50	tile = tile.convertToFormat(QImage::Format_RGB32).rgbSwapped();
51	painter.drawImage(r, tile);
52	update(r);
53}
54
55void TilePainter::setTileCount(int tiles) {
56	m_tileCount = tiles;
57	if (sizePolicy().horizontalPolicy() != QSizePolicy::Fixed) {
58		// Only manage the size ourselves if we don't appear to have something else managing it
59		int w = width() / m_size;
60		int h = (tiles + w - 1) * m_size / w;
61		setMinimumSize(m_size, h - (h % m_size));
62	} else {		
63		int w = minimumSize().width() / m_size;
64		int h = (tiles + w - 1) * m_size / w;
65		setMinimumSize(minimumSize().width(), h - (h % m_size));
66	}
67	resizeEvent(nullptr);
68}
69
70void TilePainter::setTileMagnification(int mag) {
71	m_size = mag * 8;
72	setTileCount(m_tileCount);
73}