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
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
// -*- c-basic-offset: 4 -*-
/*
Rosegarden-4
A sequencer and musical notation editor.
This program is Copyright 2000-2005
Guillaume Laurent <glaurent@telegraph-road.org>,
Chris Cannam <cannam@all-day-breakfast.com>,
Richard Bown <bownie@bownie.com>
This file is taken from KGhostView, Copyright 1997-2002
Markkhu Hihnala <mah@ee.oulu.fi>
and the KGhostView authors.
The moral right of the authors to claim authorship of this work
has been asserted.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version. See the file
COPYING included with this distribution for more information.
*/
#include <qdrawutil.h>
#include <qpainter.h>
#include <qpixmap.h>
#include <qapplication.h>
#include "scrollbox.h"
ScrollBox::ScrollBox(QWidget* parent, SizeMode sizeMode, const char* name) :
QFrame(parent, name),
m_sizeMode(sizeMode)
{
setFrameStyle(Panel|Sunken);
}
void ScrollBox::mousePressEvent(QMouseEvent* e)
{
m_mouse = e->pos();
if (e->button() == RightButton) emit button3Pressed();
if (e->button() == MidButton) emit button2Pressed();
}
void ScrollBox::mouseMoveEvent(QMouseEvent* e)
{
if (e->state() != LeftButton) return;
int dx = (e->pos().x() - m_mouse.x()) * m_pagesize.width() / width();
int dy = (e->pos().y() - m_mouse.y()) * m_pagesize.height() / height();
emit valueChanged(QPoint(m_viewpos.x() + dx, m_viewpos.y() + dy));
emit valueChangedRelative(dx, dy);
m_mouse = e->pos();
}
void ScrollBox::drawContents(QPainter* paint)
{
if (m_pagesize.isEmpty()) return;
QRect c(contentsRect());
paint->setPen(Qt::red);
int len = m_pagesize.width();
int x = c.x() + c.width() * m_viewpos.x() / len;
int w = c.width() * m_viewsize.width() / len ;
if (w > c.width()) w = c.width();
len = m_pagesize.height();
int y = c.y() + c.height() * m_viewpos.y() / len;
int h = c.height() * m_viewsize.height() / len;
if (h > c.height()) h = c.height();
paint->drawRect(x, y, w, h);
}
void ScrollBox::setPageSize(const QSize& s)
{
m_pagesize = s;
setFixedWidth(100);
setFixedHeight(100);
int maxWidth = int(QApplication::desktop()->width() * 0.75);
int maxHeight = int(QApplication::desktop()->height() * 0.75);
if (m_sizeMode == FixWidth) {
int height = s.height() * width() / s.width();
if (height > maxHeight) {
setFixedWidth(width() * maxHeight / height);
height = maxHeight;
}
setFixedHeight(height);
} else {
int width = s.width() * height() / s.height();
if (width > maxWidth) {
setFixedHeight(height() * maxWidth / width);
width = maxWidth;
}
setFixedWidth(width);
}
repaint();
}
void ScrollBox::setViewSize(const QSize& s)
{
m_viewsize = s;
repaint();
}
void ScrollBox::setViewPos(const QPoint& pos)
{
m_viewpos = pos;
repaint();
}
void ScrollBox::setViewX(int x)
{
m_viewpos = QPoint(x, m_viewpos.y());
repaint();
}
void ScrollBox::setViewY(int y)
{
m_viewpos = QPoint(m_viewpos.x(), y);
repaint();
}
void ScrollBox::setThumbnail(QPixmap img)
{
setPaletteBackgroundPixmap(img.convertToImage().smoothScale(size()));
}
ScrollBoxDialog::ScrollBoxDialog(QWidget *parent,
ScrollBox::SizeMode sizeMode,
const char *name,
WFlags flags) :
KDialog(parent, name, flags),
m_scrollbox(new ScrollBox(this, sizeMode))
{ }
ScrollBoxDialog::~ScrollBoxDialog()
{ }
void ScrollBoxDialog::closeEvent(QCloseEvent *e)
{
e->accept();
emit closed();
}
void ScrollBoxDialog::setPageSize(const QSize& s)
{
m_scrollbox->setPageSize(s);
setFixedHeight(m_scrollbox->height());
setFixedWidth(m_scrollbox->width());
}
// vim:sw=4:sts=4:ts=8:noet
|
