1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
2
3 /*
4 Sonic Visualiser
5 An audio file viewer and annotation editor.
6 Centre for Digital Music, Queen Mary, University of London.
7 This file copyright 2007 QMUL.
8
9 This program is free software; you can redistribute it and/or
10 modify it under the terms of the GNU General Public License as
11 published by the Free Software Foundation; either version 2 of the
12 License, or (at your option) any later version. See the file
13 COPYING included with this distribution for more information.
14 */
15
16 #include "SingleColourLayer.h"
17 #include "ColourDatabase.h"
18 #include "view/View.h"
19
20 #include <iostream>
21
22 #include <QTextStream>
23 #include <QApplication>
24
25 //#define DEBUG_COLOUR_SELECTION 1
26
27 SingleColourLayer::ColourRefCount
28 SingleColourLayer::m_colourRefCount;
29
SingleColourLayer()30 SingleColourLayer::SingleColourLayer() :
31 m_colour(0),
32 m_colourExplicitlySet(false),
33 m_defaultColourSet(false)
34 {
35 // Reference current colour because setDefaulColourFor
36 // will unreference it before (possibly) changing it.
37 refColor();
38 setDefaultColourFor(nullptr);
39 }
40
~SingleColourLayer()41 SingleColourLayer::~SingleColourLayer()
42 {
43 unrefColor();
44 }
45
46 QPixmap
getLayerPresentationPixmap(QSize size) const47 SingleColourLayer::getLayerPresentationPixmap(QSize size) const
48 {
49 return ColourDatabase::getInstance()->getExamplePixmap(m_colour, size);
50 }
51
52 bool
hasLightBackground() const53 SingleColourLayer::hasLightBackground() const
54 {
55 bool dark = ColourDatabase::getInstance()->useDarkBackground(m_colour);
56 return !dark;
57 }
58
59 Layer::PropertyList
getProperties() const60 SingleColourLayer::getProperties() const
61 {
62 PropertyList list = Layer::getProperties();
63 list.push_back("Colour");
64 return list;
65 }
66
67 QString
getPropertyLabel(const PropertyName & name) const68 SingleColourLayer::getPropertyLabel(const PropertyName &name) const
69 {
70 if (name == "Colour") return tr("Colour");
71 return "";
72 }
73
74 Layer::PropertyType
getPropertyType(const PropertyName & name) const75 SingleColourLayer::getPropertyType(const PropertyName &name) const
76 {
77 if (name == "Colour") return ColourProperty;
78 return InvalidProperty;
79 }
80
81 QString
getPropertyGroupName(const PropertyName &) const82 SingleColourLayer::getPropertyGroupName(const PropertyName &) const
83 {
84 return QString();
85 }
86
87 int
getPropertyRangeAndValue(const PropertyName & name,int * min,int * max,int * deflt) const88 SingleColourLayer::getPropertyRangeAndValue(const PropertyName &name,
89 int *min, int *max, int *deflt) const
90 {
91 int val = 0;
92
93 int garbage0, garbage1, garbage2;
94 if (!min) min = &garbage0;
95 if (!max) max = &garbage1;
96 if (!deflt) deflt = &garbage2;
97
98 if (name == "Colour") {
99
100 ColourDatabase::getInstance()->getColourPropertyRange(min, max);
101 *deflt = 0; //!!!
102
103 val = m_colour;
104
105 } else {
106 val = Layer::getPropertyRangeAndValue(name, min, max, deflt);
107 }
108
109 return val;
110 }
111
112 QString
getPropertyValueLabel(const PropertyName & name,int value) const113 SingleColourLayer::getPropertyValueLabel(const PropertyName &name,
114 int value) const
115 {
116 if (name == "Colour") {
117 ColourDatabase *db = ColourDatabase::getInstance();
118 if (value >= 0 && value < db->getColourCount()) {
119 return db->getColourName(value);
120 }
121 }
122 return tr("<unknown>");
123 }
124
125 RangeMapper *
getNewPropertyRangeMapper(const PropertyName &) const126 SingleColourLayer::getNewPropertyRangeMapper(const PropertyName &) const
127 {
128 return nullptr;
129 }
130
131 void
setProperty(const PropertyName & name,int value)132 SingleColourLayer::setProperty(const PropertyName &name, int value)
133 {
134 if (name == "Colour") {
135 setBaseColour(value);
136 }
137 }
138
139 void
setDefaultColourFor(LayerGeometryProvider * v)140 SingleColourLayer::setDefaultColourFor(LayerGeometryProvider *v)
141 {
142 #ifdef DEBUG_COLOUR_SELECTION
143 SVDEBUG << "SingleColourLayer::setDefaultColourFor: m_colourExplicitlySet = " << m_colourExplicitlySet << ", m_defaultColourSet " << m_defaultColourSet << endl;
144 #endif
145
146 if (m_colourExplicitlySet || m_defaultColourSet) return;
147
148 if (v) m_defaultColourSet = true; // v==0 case doesn't really count
149
150 bool dark = false;
151 if (v) {
152 dark = !v->hasLightBackground();
153 } else {
154 QColor bg = QApplication::palette().color(QPalette::Window);
155 if (bg.red() + bg.green() + bg.blue() < 384) dark = true;
156 }
157
158 ColourDatabase *cdb = ColourDatabase::getInstance();
159
160 int hint = -1;
161 bool impose = false;
162 if (v) {
163 // We don't want to call this if !v because that probably
164 // means we're being called from the constructor, and this is
165 // a virtual function
166 hint = getDefaultColourHint(dark, impose);
167 #ifdef DEBUG_COLOUR_SELECTION
168 cerr << "hint = " << hint << ", impose = " << impose << endl;
169 #endif
170 } else {
171 #ifdef DEBUG_COLOUR_SELECTION
172 cerr << "(from ctor)" << endl;
173 #endif
174 }
175
176 if (hint >= 0 && impose) {
177 setBaseColour(hint);
178 return;
179 }
180
181 unrefColor();
182
183 int bestCount = 0, bestColour = -1;
184
185 for (int i = 0; i < cdb->getColourCount(); ++i) {
186
187 int index = i;
188 if (hint > 0) index = (index + hint) % cdb->getColourCount();
189 if (cdb->useDarkBackground(index) != dark) continue;
190
191 int count = 0;
192 if (m_colourRefCount.find(index) != m_colourRefCount.end()) {
193 count = m_colourRefCount[index];
194 }
195
196 #ifdef DEBUG_COLOUR_SELECTION
197 cerr << "index = " << index << ", count = " << count;
198 #endif
199
200 if (bestColour < 0 || count < bestCount) {
201 bestColour = index;
202 bestCount = count;
203 #ifdef DEBUG_COLOUR_SELECTION
204 cerr << " *";
205 #endif
206 }
207
208 #ifdef DEBUG_COLOUR_SELECTION
209 cerr << endl;
210 #endif
211 }
212
213 if (bestColour < 0) m_colour = 0;
214 else m_colour = bestColour;
215
216 refColor();
217 }
218
219 void
setBaseColour(int colour)220 SingleColourLayer::setBaseColour(int colour)
221 {
222 m_colourExplicitlySet = true;
223
224 if (m_colour == colour) return;
225
226 refColor();
227 m_colour = colour;
228 unrefColor();
229
230 flagBaseColourChanged();
231 emit layerParametersChanged();
232 }
233
234 int
getBaseColour() const235 SingleColourLayer::getBaseColour() const
236 {
237 return m_colour;
238 }
239
240 QColor
getBaseQColor() const241 SingleColourLayer::getBaseQColor() const
242 {
243 return ColourDatabase::getInstance()->getColour(m_colour);
244 }
245
246 QColor
getBackgroundQColor(LayerGeometryProvider * v) const247 SingleColourLayer::getBackgroundQColor(LayerGeometryProvider *v) const
248 {
249 return v->getBackground();
250 }
251
252 QColor
getForegroundQColor(LayerGeometryProvider * v) const253 SingleColourLayer::getForegroundQColor(LayerGeometryProvider *v) const
254 {
255 return v->getForeground();
256 }
257
258 std::vector<QColor>
getPartialShades(LayerGeometryProvider * v) const259 SingleColourLayer::getPartialShades(LayerGeometryProvider *v) const
260 {
261 std::vector<QColor> s;
262 QColor base = getBaseQColor();
263 QColor bg = getBackgroundQColor(v);
264 for (int i = 0; i < 3; ++i) {
265 int red = base.red() + ((bg.red() - base.red()) * (i + 1)) / 4;
266 int green = base.green() + ((bg.green() - base.green()) * (i + 1)) / 4;
267 int blue = base.blue() + ((bg.blue() - base.blue()) * (i + 1)) / 4;
268 s.push_back(QColor(red, green, blue));
269 }
270 return s;
271 }
272
273 void
toXml(QTextStream & stream,QString indent,QString extraAttributes) const274 SingleColourLayer::toXml(QTextStream &stream,
275 QString indent, QString extraAttributes) const
276 {
277 QString s;
278
279 QString colourName, colourSpec, darkbg;
280 ColourDatabase::getInstance()->getStringValues
281 (m_colour, colourName, colourSpec, darkbg);
282
283 s += QString("colourName=\"%1\" "
284 "colour=\"%2\" "
285 "darkBackground=\"%3\" ")
286 .arg(colourName)
287 .arg(colourSpec)
288 .arg(darkbg);
289
290 Layer::toXml(stream, indent, extraAttributes + " " + s);
291 }
292
293 void
setProperties(const QXmlAttributes & attributes)294 SingleColourLayer::setProperties(const QXmlAttributes &attributes)
295 {
296 QString colourName = attributes.value("colourName");
297 QString colourSpec = attributes.value("colour");
298 QString darkbg = attributes.value("darkBackground");
299
300 int colour = ColourDatabase::getInstance()->putStringValues
301 (colourName, colourSpec, darkbg);
302
303 if (colour == -1)
304 return;
305
306 m_colourExplicitlySet = true;
307
308 if (m_colour != colour) {
309
310 #ifdef DEBUG_COLOUR_SELECTION
311 SVDEBUG << "SingleColourLayer::setProperties: changing colour from " << m_colour << " to " << colour << endl;
312 #endif
313
314 unrefColor();
315 m_colour = colour;
316 refColor();
317
318 flagBaseColourChanged();
319 }
320 }
321
refColor()322 void SingleColourLayer::refColor()
323 {
324 if (m_colourRefCount.find(m_colour) == m_colourRefCount.end()) {
325 m_colourRefCount[m_colour] = 1;
326 } else {
327 m_colourRefCount[m_colour]++;
328 }
329 }
330
unrefColor()331 void SingleColourLayer::unrefColor()
332 {
333 if (m_colourRefCount.find(m_colour) != m_colourRefCount.end() &&
334 m_colourRefCount[m_colour] > 0) {
335 m_colourRefCount[m_colour]--;
336 }
337 }
338