1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/*
mapwidget.cc
This file is part of the Project::OSiRiON zone editor
and is distributed under the terms and conditions of
the GNU General Public License version 2
*/
#include <mapwidget.h>
#include <QPainter>
#include <QWheelEvent>
namespace editor
{
MapWidget::MapWidget(QWidget *parent) : QWidget(parent)
{
setMinimumSize(128,128);
// zoom sucks but it works
mapwidget_zoom = 4;
}
void MapWidget::wheelEvent(QWheelEvent *event)
{
if (event->orientation() == Qt::Vertical) {
mapwidget_zoom += event->delta() / 120;
if (mapwidget_zoom < 1)
mapwidget_zoom = 1;
else if (mapwidget_zoom > 64) {
mapwidget_zoom = 64;
}
repaint();
event->accept();
}
}
void MapWidget::paintEvent(QPaintEvent *event)
{
QPen pen(Qt::blue, 1, Qt::SolidLine);
QPainter painter(this);
painter.setPen(pen);
// mapwidget_zoom is used to scale from game units to screen coorinates
// 1 grid square is 128 game units
// gridsize is the size of one grid square in screen coordinates
int gridsize = 128 / mapwidget_zoom;
int x = width() / 2;
while (x > 0) {
painter.drawLine(x, 0, x, height());
x -= gridsize;
}
x = width() / 2 + gridsize;
while (x <= width()) {
painter.drawLine(x, 0, x, height());
x += gridsize;
}
int y = height() / 2;
while (y > 0) {
painter.drawLine(0, y, width(), y);
y -= gridsize;
}
y = height() / 2 + gridsize;
while (y <= height()) {
painter.drawLine(0, y, width(), y);
y += gridsize;
}
}
}
|
