summaryrefslogtreecommitdiffstats
path: root/ksvg/impl/SVGColorProfileElementImpl.cc
blob: 89770494f1ca04a963370ffbd33ea7b0af6668d6 (plain)
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
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
/*
    Copyright (C) 2001-2003 KSVG Team
    This file is part of the KDE project

    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 <kurl.h>
#include <kdebug.h>
#include <tdeio/netaccess.h>

#include <tqimage.h>

#include "SVGDocumentImpl.h"
#include "SVGSVGElementImpl.h"

#include "SVGRenderingIntent.h"

#include "SVGAnimatedStringImpl.h"
#include "SVGColorProfileElementImpl.h"

using namespace KSVG;

#include "SVGColorProfileElementImpl.lut.h"
#include "ksvg_bridge.h"
#include "ksvg_ecma.h"

SVGColorProfileElementImpl::SVGColorProfileElementImpl(DOM::ElementImpl *impl) : SVGElementImpl(impl), SVGURIReferenceImpl()
{
	KSVG_EMPTY_FLAGS

	m_loaded = false;
	
	// Spec: Default value 'auto', if not overwritten later
	m_renderingIntent = RENDERING_INTENT_AUTO;
}

SVGColorProfileElementImpl::~SVGColorProfileElementImpl()
{
	if(m_loaded)
		closeColorProfile();
}

/*
@namespace KSVG
@begin SVGColorProfileElementImpl::s_hashTable 5
 name	SVGColorProfileElementImpl::Name	DontDelete|ReadOnly
 href	SVGColorProfileElementImpl::Href	DontDelete|ReadOnly
 rendering-intent	SVGColorProfileElementImpl::RenderingIntent	DontDelete|ReadOnly
@end
*/

Value SVGColorProfileElementImpl::getValueProperty(ExecState *exec, int token) const
{
	switch(token)
	{
		case Name:
			return String(m_name);
		case Href:
			return href()->cache(exec);
		case RenderingIntent:
			return Number(m_renderingIntent);
		default:
			kdWarning() << "Unhandled token in " << k_funcinfo << " : " << token << endl;
			return Undefined();
	}
}

void SVGColorProfileElementImpl::putValueProperty(ExecState *exec, int token, const Value &value, int attr)
{
	// This class has just ReadOnly properties, only with the Internal flag set
	// it's allowed to modify those.
	if(!(attr & KJS::Internal))
		return;

	switch(token)
	{
		case Name:
			m_name = value.toString(exec).string();
			ownerDoc()->rootElement()->addToIdMap(m_name.string(), this);
			break;
		case Href:
			href()->setBaseVal(value.toString(exec).string());
			break;
		case RenderingIntent:
		{
			TQString compare = value.toString(exec).qstring().lower();

			if(compare == "perceptual")
				m_renderingIntent = RENDERING_INTENT_PERCEPTUAL;
			else if(compare == "relative-colorimetric")
				m_renderingIntent = RENDERING_INTENT_RELATIVE_COLORIMETRIC;
			else if(compare == "saturation")
				m_renderingIntent = RENDERING_INTENT_SATURATION;
			else if(compare == "absolute-colorimetric")
				m_renderingIntent = RENDERING_INTENT_ABSOLUTE_COLORIMETRIC;
			else
				m_renderingIntent = RENDERING_INTENT_AUTO;
			break;		 
		}
		default:
			kdWarning() << "Unhandled token in " << k_funcinfo << " : " << token << endl;
	}
}

void SVGColorProfileElementImpl::setLocal(const DOM::DOMString &local)
{
	m_local = local;
}

DOM::DOMString SVGColorProfileElementImpl::local() const
{
	return m_local;
}

void SVGColorProfileElementImpl::setName(const DOM::DOMString &name)
{
	m_name = name;
}

DOM::DOMString SVGColorProfileElementImpl::name() const
{
	return m_name;
}

void SVGColorProfileElementImpl::setRenderingIntent(unsigned short renderingIntent)
{
	m_renderingIntent = renderingIntent;
}

unsigned short SVGColorProfileElementImpl::renderingIntent() const
{
	return m_renderingIntent;
}

bool SVGColorProfileElementImpl::canLoad()
{
	TQString open;
	bool temp;
	return canLoad(false, temp, open, true);
}

bool SVGColorProfileElementImpl::canLoad(bool remote, bool &tempFile, TQString &open, bool verbose)
{
	KURL file;
	
	if(!KURL::isRelativeURL(href()->baseVal().string()))
		file = KURL(href()->baseVal().string());
	else
		file = KURL(ownerDoc()->baseUrl(), href()->baseVal().string());
	
	if(file.path().isEmpty())
	{
		if(verbose)
		    kdDebug() << "Couldn't load color profile " << file.path() << "!" << endl;

		return false;
	}

	if(file.isLocalFile())
	{
		open = file.path();
		
		if(!TQFile::exists(open))
		{
			if(verbose)
				kdDebug() << "Couldn't load color profile " << file.path() << "! It does not exist." << endl;
			
			return false;
		}
	}
	else
	{
		if(remote)
		{
			if(TDEIO::NetAccess::download(file, open, 0))
				tempFile = true;
		}
	}

	return true;
}

bool SVGColorProfileElementImpl::loadColorProfile()
{
	TQString open;
	bool tempFile = false;
	
	if(!canLoad(true, tempFile, open, false))
		return false;

	m_hInput = cmsOpenProfileFromFile(open.latin1(), "r");
	m_hOutput = cmsCreate_sRGBProfile();

	unsigned int dwIn = BYTES_SH(2) | CHANNELS_SH(cmsChannelsOf(m_inputColorSpace));
	unsigned int dwOut = BYTES_SH(2) | CHANNELS_SH(cmsChannelsOf(m_outputColorSpace));
	
	if(m_renderingIntent != RENDERING_INTENT_AUTO)
		m_hTrans = cmsCreateTransform(m_hInput, dwIn, m_hOutput, dwOut, m_renderingIntent - 2, cmsFLAGS_NOOPTIMIZE);
	else
		m_hTrans = cmsCreateTransform(m_hInput, dwIn, m_hOutput, dwOut, cmsGetHeaderRenderingIntent(m_hInput), cmsFLAGS_NOOPTIMIZE);
	
	m_inputColorSpace = cmsGetColorSpace(m_hInput);
	m_outputColorSpace = cmsGetColorSpace(m_hOutput);
	m_loaded = true;

	if(tempFile)
		TDEIO::NetAccess::removeTempFile(open);
	
	return true;
}

void SVGColorProfileElementImpl::closeColorProfile()
{
	cmsDeleteTransform(m_hTrans);
	cmsCloseProfile(m_hInput);
}

TQRgb SVGColorProfileElementImpl::correctPixel(float r, float g, float b)
{
	if(!m_loaded)
	{
		if(!loadColorProfile())
			return tqRgb(0, 0, 0);
	}

	unsigned short input[cmsMAXCHANNELS], output[cmsMAXCHANNELS];

	input[0] = ((unsigned int) r) * 257;
	input[1] = ((unsigned int) g) * 257;
	input[2] = ((unsigned int) b) * 257;

	cmsDoTransform(m_hTrans, input, output, 1);

	if(m_outputColorSpace == cmsSigRgbData)
		return tqRgb(output[0] / 257, output[1] / 257, output[2] / 257);

	return tqRgb(0, 0, 0);
}

TQImage *SVGColorProfileElementImpl::correctImage(TQImage *input)
{
	if(!canLoad())
		return input;
	
	for(int y = 0; y < input->height(); y++)
	{
		for(int x = 0; x < input->width(); x++)
		{
			TQRgb pixel = input->pixel(x, y);
			input->setPixel(x, y, correctPixel(tqRed(pixel), tqGreen(pixel), tqBlue(pixel)));
		}
	}

	return input;
}