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	, m_size(8)
17{
18	m_backing = QPixmap(256, 768);
19	m_backing.fill(Qt::transparent);
20	resize(256, 768);
21	setTileCount(3072);
22}
23
24void TilePainter::paintEvent(QPaintEvent* event) {
25	QPainter painter(this);
26	painter.drawPixmap(QPoint(), m_backing);
27}
28
29void TilePainter::resizeEvent(QResizeEvent* event) {
30	int w = width() / m_size;
31	int calculatedHeight = (m_tileCount + w - 1) * m_size / w;
32	calculatedHeight -= calculatedHeight % m_size;
33	if (width() / m_size != m_backing.width() / m_size || m_backing.height() != calculatedHeight) {
34		m_backing = QPixmap(width(), calculatedHeight);
35		m_backing.fill(Qt::transparent);
36	}
37}
38
39void TilePainter::mousePressEvent(QMouseEvent* event) {
40	int x = event->x() / m_size;
41	int y = event->y() / m_size;
42	emit indexPressed(y * (width() / m_size) + x);
43}
44
45void TilePainter::setTile(int index, const uint16_t* data) {
46	QPainter painter(&m_backing);
47	int w = width() / m_size;
48	int x = index % w;
49	int y = index / w;
50	QRect r(x * m_size, y * m_size, m_size, m_size);
51	QImage tile(reinterpret_cast<const uchar*>(data), 8, 8, QImage::Format_RGB555);
52	painter.drawImage(r, tile.rgbSwapped());
53	update(r);
54}
55
56void TilePainter::setTileCount(int tiles) {
57	m_tileCount = tiles;
58	if (sizePolicy().horizontalPolicy() != QSizePolicy::Fixed) {
59		// Only manage the size ourselves if we don't appear to have something else managing it
60		int w = width() / m_size;
61		int h = (tiles + w - 1) * m_size / w;
62		setMinimumSize(m_size, h - (h % m_size));
63		resizeEvent(nullptr);
64	}
65}
66
67void TilePainter::setTileMagnification(int mag) {
68	m_size = mag * 8;
69	setTileCount(m_tileCount);
70}