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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
/* This file is part of the KDE project
Copyright (c) 2001 Simon Hausmann <[email protected]>
Copyright (C) 2002, 2003 Nicolas GOUTTE <[email protected]>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "KoPictureImage.h"
#include "KoPictureKey.h"
#include <kdebug.h>
#include <kmimetype.h>
#include <qbuffer.h>
#include <qpainter.h>
#include <qimage.h>
#include <qpixmap.h>
#include <qapplication.h>
#include <qdragobject.h>
KoPictureImage::KoPictureImage(void) : m_cacheIsInFastMode(true)
{
// Forbid QPixmap to cache the X-Window resources (Yes, it is slower!)
m_cachedPixmap.setOptimization(QPixmap::MemoryOptim);
}
KoPictureImage::~KoPictureImage(void)
{
}
KoPictureBase* KoPictureImage::newCopy(void) const
{
return new KoPictureImage(*this);
}
KoPictureType::Type KoPictureImage::getType(void) const
{
return KoPictureType::TypeImage;
}
bool KoPictureImage::isNull(void) const
{
return m_originalImage.isNull();
}
void KoPictureImage::scaleAndCreatePixmap(const QSize& size, bool fastMode)
{
if ((size==m_cachedSize)
&& ((fastMode) || (!m_cacheIsInFastMode)))
{
// The cached pixmap has already the right size
// and:
// - we are in fast mode (We do not care if the re-size was done slowly previously)
// - the re-size was already done in slow mode
return;
}
// Slow mode can be very slow, especially at high zoom levels -> configurable
if ( !isSlowResizeModeAllowed() )
{
kdDebug(30003) << "User has disallowed slow mode!" << endl;
fastMode = true;
}
// Use QImage::scale if we have fastMode==true
if ( fastMode )
{
m_cachedPixmap.convertFromImage(m_originalImage.scale( size ), QPixmap::Color); // Always color or else B/W can be reversed
m_cacheIsInFastMode=true;
}
else
{
m_cachedPixmap.convertFromImage(m_originalImage.smoothScale( size ), QPixmap::Color); // Always color or else B/W can be reversed
m_cacheIsInFastMode=false;
}
m_cachedSize=size;
}
void KoPictureImage::draw(QPainter& painter, int x, int y, int width, int height, int sx, int sy, int sw, int sh, bool fastMode)
{
//kdDebug() << "KoImage::draw currentSize:" << currentSize.width() << "x" << currentSize.height() << endl;
if ( !width || !height )
return;
QSize origSize = getOriginalSize();
const bool scaleImage = painter.device()->isExtDev() // we are printing
&& ((width <= origSize.width()) || (height <= origSize.height()));
if( scaleImage )
{
// use full resolution of image
double xScale = double(width) / double(origSize.width());
double yScale = double(height) / double(origSize.height());
painter.save();
painter.translate( x, y );
painter.scale( xScale, yScale );
// Note that sx, sy, sw and sh are unused in this case. Not a problem, since it's about printing.
// Note 2: we do not cache the QPixmap. As we are printing, the next time we will probably
// need again the screen version.
painter.drawImage(0, 0, m_originalImage);
painter.restore();
}
else
{
QSize screenSize( width, height );
//kdDebug() << "KoPictureImage::draw screenSize=" << screenSize.width() << "x" << screenSize.height() << endl;
scaleAndCreatePixmap(screenSize, fastMode);
// sx,sy,sw,sh is meant to be used as a cliprect on the pixmap, but drawPixmap
// translates it to the (x,y) point -> we need (x+sx, y+sy).
painter.drawPixmap( x + sx, y + sy, m_cachedPixmap, sx, sy, sw, sh );
}
}
bool KoPictureImage::loadData(const QByteArray& array, const QString& /* extension*/ )
{
m_rawData=array;
// Second, create the original image
QBuffer buffer(m_rawData);
buffer.open(IO_ReadWrite);
QImageIO imageIO(&buffer,NULL);
if (!imageIO.read())
{
buffer.close();
kdError(30003) << "Image could not be loaded!" << endl;
return false;
}
buffer.close();
m_originalImage=imageIO.image();
return true;
}
bool KoPictureImage::save(QIODevice* io) const
{
kdDebug() << k_funcinfo << "writing raw data. size=" << m_rawData.size() << endl;
// We save the raw data, to avoid damaging the file by many load/save cycles (especially for JPEG)
Q_ULONG size=io->writeBlock(m_rawData); // WARNING: writeBlock returns Q_LONG but size() Q_ULONG!
return (size==m_rawData.size());
}
QSize KoPictureImage::getOriginalSize(void) const
{
return m_originalImage.size();
}
QPixmap KoPictureImage::generatePixmap(const QSize& size, bool smoothScale)
{
scaleAndCreatePixmap(size,!smoothScale);
return m_cachedPixmap;
}
QString KoPictureImage::getMimeType(const QString& extension) const
{
QString fileName("/tmp/temp.");
fileName+=extension;
// Find the mimetype only by the extension, not by file content (as the file is empty!)
const QString mimetype( KMimeType::findByPath( fileName, 0 ,true )->name() );
// ### TODO: use KMimeType::findByContent (but then the mimetype probably need to be cached)
kdDebug(30003) << "Image is mime type: " << mimetype << endl;
return mimetype;
}
QDragObject* KoPictureImage::dragObject( QWidget *dragSource, const char *name )
{
return new QImageDrag( m_originalImage, dragSource, name );
}
QImage KoPictureImage::generateImage(const QSize& size)
{
// We do not cache the image, as we will seldom need it again.
return m_originalImage.smoothScale( size );
}
void KoPictureImage::clearCache(void)
{
m_cachedPixmap.resize(0, 0);
m_cacheIsInFastMode=true;
m_cachedSize=QSize();
}
|
