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45 #include <private/qsgdistancefieldglyphcache_p.h>
49 qWarning("Usage: distfieldgen [options] <font_filename>");
51 qWarning("Distfieldgen generates distance-field renderings of the provided font file,");
52 qWarning("one for each font family/style it contains.");
53 qWarning("Unless the QT_QML_DISTFIELDDIR environment variable is set, the renderings are");
54 qWarning("saved in the fonts/distancefields directory where the Qt libraries are located.");
55 qWarning("You can also override the output directory with the -d option.");
57 qWarning(" options:");
58 qWarning(" -d <directory>................................ output directory");
59 qWarning(" --no-multithread.............................. don't use multiple threads to render distance-fields");
60 qWarning(" --force-all-styles............................ force rendering of styles Normal, Bold, Italic and Bold Italic");
61 qWarning(" -styles \"style1,style2,..\".................... force rendering of specified styles");
67 void printProgress(int p)
70 for (int i = 0; i < 50; ++i)
71 printf(i < p / 2 ? "=" : " ");
77 class DistFieldGenTask : public QRunnable
80 DistFieldGenTask(QSGDistanceFieldGlyphCache *atlas, int c, int nbGlyph, QMap<int, QImage> *outList)
90 QImage df = m_atlas->renderDistanceFieldGlyph(m_char);
91 QMutexLocker lock(&m_mutex);
92 m_outList->insert(m_char, df);
93 printProgress(float(m_outList->count()) / m_nbGlyph * 100);
96 static QMutex m_mutex;
97 QSGDistanceFieldGlyphCache *m_atlas;
100 QMap<int, QImage> *m_outList;
103 QMutex DistFieldGenTask::m_mutex;
105 static void generateDistanceFieldForFont(const QFont &font, const QString &destinationDir, bool multithread)
107 QSGDistanceFieldGlyphCache *atlas = QSGDistanceFieldGlyphCache::get(QGLContext::currentContext(), font);
109 QString fontString = font.family() + QLatin1String(" ") + db.styleString(font);
110 qWarning("> Generating distance-field for font '%s' (%d glyphs)", fontString.toLatin1().constData(), atlas->glyphCount());
112 QMap<int, QImage> distfields;
113 for (int i = 0; i < atlas->glyphCount(); ++i) {
115 DistFieldGenTask *task = new DistFieldGenTask(atlas, i, atlas->glyphCount(), &distfields);
116 QThreadPool::globalInstance()->start(task);
118 QImage df = atlas->renderDistanceFieldGlyph(i);
119 distfields.insert(i, df);
120 printProgress(float(distfields.count()) / atlas->glyphCount() * 100);
125 QThreadPool::globalInstance()->waitForDone();
127 // Combine dist fields in one image
128 int size = qCeil(qSqrt(qreal(atlas->glyphCount()))) * 64;
129 QImage output(size, size, QImage::Format_ARGB32_Premultiplied);
130 output.fill(Qt::transparent);
133 for (QMap<int, QImage>::const_iterator i = distfields.constBegin(); i != distfields.constEnd(); ++i) {
134 p.drawImage(x, y, i.value());
146 QFileInfo dfi(destinationDir);
148 qWarning("Error: '%s' is not a directory.", destinationDir.toLatin1().constData());
153 QString filename = font.family();
154 filename.remove(QLatin1String(" "));
155 QString italic = font.italic() ? QLatin1String("i") : QLatin1String("");
156 QString bold = font.weight() > QFont::Normal ? QLatin1String("b") : QLatin1String("");
157 filename = filename + bold + italic;
158 QString out = QString(QLatin1String("%1/%2.png")).arg(destinationDir).arg(filename);
160 qWarning(" Distance-field saved to '%s'\n", out.toLatin1().constData());
163 class MyWidget : public QGLWidget
173 void showEvent(QShowEvent *e)
175 QStringList args = QApplication::arguments();
177 bool noMultithread = args.contains(QLatin1String("--no-multithread"));
178 bool forceAllStyles = args.contains(QLatin1String("--force-all-styles"));
182 for (int i = 0; i < args.count(); ++i) {
183 QString a = args.at(i);
184 if (!a.startsWith('-') && QFileInfo(a).exists())
186 if (a == QLatin1String("-d"))
187 destDir = args.at(++i);
189 if (destDir.isEmpty()) {
190 destDir = QFileInfo(fontFile).canonicalPath();
193 QStringList customStyles;
194 if (args.contains(QLatin1String("-styles"))) {
195 int index = args.indexOf(QLatin1String("-styles"));
196 QString styles = args.at(index + 1);
197 customStyles = styles.split(QLatin1String(","));
201 int fontID = QFontDatabase::addApplicationFont(fontFile);
203 qWarning("Error: Invalid font file.");
208 QStringList allStyles = QStringList() << QLatin1String("Normal")
209 << QLatin1String("Bold")
210 << QLatin1String("Italic")
211 << QLatin1String("Bold Italic");
213 // Generate distance-fields for all families and all styles provided by the font file
214 QFontDatabase fontDatabase;
215 QStringList families = QFontDatabase::applicationFontFamilies(fontID);
216 int famCount = families.count();
217 for (int i = 0; i < famCount; ++i) {
221 else if (customStyles.count() > 0)
222 styles = customStyles;
224 styles = fontDatabase.styles(families.at(i));
226 int styleCount = styles.count();
227 for (int j = 0; j < styleCount; ++j) {
229 if (forceAllStyles || customStyles.count() > 0) {
230 int weight = styles.at(j).contains(QLatin1String("Bold")) ? QFont::Bold : QFont::Normal;
231 font = QFont(families.at(i), 10, weight, styles.at(j).contains(QLatin1String("Italic")));
233 font = fontDatabase.font(families.at(i), styles.at(j), 10); // point size is ignored
235 generateDistanceFieldForFont(font, destDir, !noMultithread);
243 int main(int argc, char *argv[])
245 QApplication app(argc, argv);
246 QStringList args = QApplication::arguments();
249 || args.contains(QLatin1String("--help"))
250 || args.contains(QLatin1String("-help"))
251 || args.contains(QLatin1String("--h"))
252 || args.contains(QLatin1String("-h")))