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
|
/**
* Copyright (C) 1997-2002 the KGhostView authors. See file AUTHORS.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <tqdrawutil.h>
#include <tqpainter.h>
#include <tqpixmap.h>
#include "scrollbox.h"
ScrollBox::ScrollBox( TQWidget* parent, const char* name )
: TQFrame( parent, name )
{
setFrameStyle( Panel | Sunken );
}
void ScrollBox::mousePressEvent( TQMouseEvent* e )
{
mouse = e->pos();
if( e->button() == RightButton )
emit button3Pressed();
if( e->button() == MidButton )
emit button2Pressed();
}
void ScrollBox::mouseMoveEvent( TQMouseEvent* e )
{
if( e->state() != LeftButton )
return;
int dx = ( e->pos().x() - mouse.x() ) * pagesize.width() / width();
int dy = ( e->pos().y() - mouse.y() ) * pagesize.height() / height();
// Notify the word what the view position has changed
// The word in turn will notify as that view position has changed
// Even if coordinates are out of range TQScrollView handles
// this properly
emit valueChanged( TQPoint( viewpos.x() + dx, viewpos.y() + dy ) );
emit valueChangedRelative( dx, dy );
mouse = e->pos();
}
void ScrollBox::resizeEvent( TQResizeEvent * )
{
if ( paletteBackgroundPixmap() )
setPaletteBackgroundPixmap( paletteBackgroundPixmap()->convertToImage().smoothScale( size() ) );
}
void ScrollBox::drawContents( TQPainter* paint )
{
if ( pagesize.isEmpty() )
return;
/* FIXME:
*
* The logic below is flawed because the page info given to us
* contains the borders used for page decoration, while we assume
* that it means only the actual displayed document.
*
*/
TQRect c( contentsRect() );
paint -> setPen( Qt::red );
int len = pagesize.width();
int x = c.x() + c.width() * viewpos.x() / len;
int w = c.width() * viewsize.width() / len ;
if ( w > c.width() ) w = c.width();
len = pagesize.height();
int y = c.y() + c.height() * viewpos.y() / len;
int h = c.height() * viewsize.height() / len;
if ( h > c.height() ) h = c.height();
paint->drawRect( x, y, w, h );
}
void ScrollBox::setPageSize( const TQSize& s )
{
pagesize = s;
setFixedHeight( s.height() * width() / s.width() );
repaint();
}
void ScrollBox::setViewSize( const TQSize& s )
{
viewsize = s;
repaint();
}
void ScrollBox::setViewPos( const TQPoint& pos )
{
viewpos = pos;
repaint();
}
void ScrollBox::setThumbnail( TQPixmap img )
{
// The line below is needed to work around certain "features" of styles such as liquid
// see bug:61711 for more info (LPC, 20 Aug '03)
setBackgroundOrigin( TQWidget::WidgetOrigin );
setPaletteBackgroundPixmap( img.convertToImage().smoothScale( size() ) );
}
void ScrollBox::clear()
{
unsetPalette();
}
#include "scrollbox.moc"
// vim:sw=4:sts=4:ts=8:noet
|
