OpenCoverage

qtextureglyphcache.cpp

Absolute File Name:/home/qt/qt5_coco/qt5/qtbase/src/gui/painting/qtextureglyphcache.cpp
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6-
7-
8QTextureGlyphCache::~QTextureGlyphCache()-
9{-
10}-
11-
12int QTextureGlyphCache::calculateSubPixelPositionCount(glyph_t glyph) const-
13{-
14-
15-
16-
17 const int NumSubpixelPositions = 12;-
18-
19 QImage images[NumSubpixelPositions];-
20 int numImages = 0;-
21 for (int i = 0; i < NumSubpixelPositions
i < NumSubpixelPositionsDescription
TRUEnever evaluated
FALSEnever evaluated
; ++i) {		0
22 QImage img = textureMapForGlyph(glyph, QFixed::fromReal(i / 12.0));-
23-
24 if (numImages == 0
numImages == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
25 QPainterPath path;-
26 QFixedPoint point;-
27 m_current_fontengine->addGlyphsToPath(&glyph, &point, 1, &path, QTextItem::RenderFlags());-
28-
29-
30 if (path.isEmpty()
path.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
31 break;
never executed: break;
0
32-
33 images[numImages++] = std::move(img);-
34 }
never executed: end of block
 else {		0
35 bool found = false;-
36 for (int j = 0; j < numImages
j < numImagesDescription
TRUEnever evaluated
FALSEnever evaluated
; ++j) {		0
37 if (images[j] == img
images[j] == imgDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
38 found = true;-
39 break;
never executed: break;
0
40 }-
41 }
never executed: end of block
0
42 if (!found
!foundDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
43 images[numImages++] = std::move(img);
never executed: images[numImages++] = std::move(img);
0
44 }
never executed: end of block
0
45 }-
46-
47 return
never executed: return numImages;
 numImages;
never executed: return numImages;
0
48}-
49-
50bool QTextureGlyphCache::populate(QFontEngine *fontEngine, int numGlyphs, const glyph_t *glyphs,-
51 const QFixedPoint *positions)-
52{-
53-
54-
55-
56-
57-
58 m_current_fontengine = fontEngine;-
59 const int padding = glyphPadding();-
60 const int paddingDoubled = padding * 2;-
61-
62 bool supportsSubPixelPositions = fontEngine->supportsSubPixelPositions();-
63 if (fontEngine->m_subPixelPositionCount == 0
fontEngine->m_...tionCount == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
64 if (!supportsSubPixelPositions
!supportsSubPixelPositionsDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
65 fontEngine->m_subPixelPositionCount = 1;-
66 }
never executed: end of block
 else {		0
67 int i = 0;-
68 while (fontEngine->m_subPixelPositionCount == 0
fontEngine->m_...tionCount == 0Description
TRUEnever evaluated
FALSEnever evaluated
 && i < numGlyphs
i < numGlyphsDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
69 fontEngine->m_subPixelPositionCount = calculateSubPixelPositionCount(glyphs[i++]);
never executed: fontEngine->m_subPixelPositionCount = calculateSubPixelPositionCount(glyphs[i++]);
0
70 }
never executed: end of block
0
71 }-
72-
73 if (m_cx == 0
m_cx == 0Description
TRUEnever evaluated
FALSEnever evaluated
 && m_cy == 0
m_cy == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
74 m_cx = padding;-
75 m_cy = padding;-
76 }
never executed: end of block
0
77-
78 QHash<GlyphAndSubPixelPosition, Coord> listItemCoordinates;-
79 int rowHeight = 0;-
80-
81-
82 for (int i=0; i < numGlyphs
i < numGlyphsDescription
TRUEnever evaluated
FALSEnever evaluated
; ++i) {		0
83 const glyph_t glyph = glyphs[i];-
84-
85 QFixed subPixelPosition;-
86 if (supportsSubPixelPositions
supportsSubPixelPositionsDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
87 QFixed x = positions != 0
positions != 0Description
TRUEnever evaluated
FALSEnever evaluated
 ? positions[i].x : QFixed();		0
88 subPixelPosition = fontEngine->subPixelPositionForX(x);-
89 }
never executed: end of block
0
90-
91 if (coords.contains(GlyphAndSubPixelPosition(glyph, subPixelPosition))
coords.contain...ixelPosition))Description
TRUEnever evaluated
FALSEnever evaluated
)		0
92 continue;
never executed: continue;
0
93 if (listItemCoordinates.contains(GlyphAndSubPixelPosition(glyph, subPixelPosition))
listItemCoordi...ixelPosition))Description
TRUEnever evaluated
FALSEnever evaluated
)		0
94 continue;
never executed: continue;
0
95-
96 glyph_metrics_t metrics = fontEngine->alphaMapBoundingBox(glyph, subPixelPosition, m_transform, m_format);-
97 GlyphAndSubPixelPosition key(glyph, subPixelPosition);-
98 int glyph_width = metrics.width.ceil().toInt();-
99 int glyph_height = metrics.height.ceil().toInt();-
100 if (glyph_height == 0
glyph_height == 0Description
TRUEnever evaluated
FALSEnever evaluated
 || glyph_width == 0
glyph_width == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
101-
102 Coord c = { 0, 0, 0, 0, 0, 0 };-
103 coords.insert(key, c);-
104 continue;
never executed: continue;
0
105 }-
106-
107 if (m_format == QFontEngine::Format_Mono
m_format == QF...e::Format_MonoDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
108 glyph_width = (glyph_width+7)&~7;
never executed: glyph_width = (glyph_width+7)&~7;
0
109-
110 Coord c = { 0, 0,-
111 glyph_width,-
112 glyph_height,-
113 metrics.x.truncate(),-
114 -metrics.y.truncate() };-
115-
116 listItemCoordinates.insert(key, c);-
117 rowHeight = qMax(rowHeight, glyph_height);-
118 }
never executed: end of block
0
119 if (listItemCoordinates.isEmpty()
listItemCoordinates.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
120 return
never executed: return true;
 true;
never executed: return true;
0
121-
122 rowHeight += paddingDoubled;-
123-
124 if (m_w == 0
m_w == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
125 if (fontEngine->maxCharWidth() <= 256
fontEngine->ma...Width() <= 256Description
TRUEnever evaluated
FALSEnever evaluated
)		0
126 m_w = 256;
never executed: m_w = 256;
0
127 else-
128 m_w = qNextPowerOfTwo(qCeil(fontEngine->maxCharWidth()) - 1);
never executed: m_w = qNextPowerOfTwo(qCeil(fontEngine->maxCharWidth()) - 1);
0
129 }-
130-
131-
132 QHash<GlyphAndSubPixelPosition, Coord>::iterator iter = listItemCoordinates.begin();-
133 int requiredWidth = m_w;-
134 while (iter != listItemCoordinates.end()
iter != listIt...rdinates.end()Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
135 Coord c = iter.value();-
136-
137 m_currentRowHeight = qMax(m_currentRowHeight, c.h);-
138-
139 if (m_cx + c.w + padding > requiredWidth
m_cx + c.w + p... requiredWidthDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
140 int new_width = requiredWidth*2;-
141 while (new_width < m_cx + c.w + padding
new_width < m_... c.w + paddingDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
142 new_width *= 2;
never executed: new_width *= 2;
0
143 if (new_width <= maxTextureWidth()
new_width <= maxTextureWidth()Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
144 requiredWidth = new_width;-
145 }
never executed: end of block
 else {		0
146-
147 m_cx = padding;-
148 m_cy += m_currentRowHeight + paddingDoubled;-
149 m_currentRowHeight = c.h;-
150 }
never executed: end of block
0
151 }-
152-
153 if (maxTextureHeight() > 0
maxTextureHeight() > 0Description
TRUEnever evaluated
FALSEnever evaluated
 && m_cy + c.h + padding > maxTextureHeight()
m_cy + c.h + p...extureHeight()Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
154-
155 return
never executed: return false;
 false;
never executed: return false;
0
156 }-
157-
158 c.x = m_cx;-
159 c.y = m_cy;-
160-
161 coords.insert(iter.key(), c);-
162 m_pendingGlyphs.insert(iter.key(), c);-
163-
164 m_cx += c.w + paddingDoubled;-
165 ++iter;-
166 }
never executed: end of block
0
167 return
never executed: return true;
 true;
never executed: return true;
0
168-
169}-
170-
171void QTextureGlyphCache::fillInPendingGlyphs()-
172{-
173 if (!hasPendingGlyphs()
!hasPendingGlyphs()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
174 return;
never executed: return;
0
175-
176 int requiredHeight = m_h;-
177 int requiredWidth = m_w;-
178 {-
179 QHash<GlyphAndSubPixelPosition, Coord>::iterator iter = m_pendingGlyphs.begin();-
180 while (iter != m_pendingGlyphs.end()
iter != m_pendingGlyphs.end()Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
181 Coord c = iter.value();-
182 requiredHeight = qMax(requiredHeight, c.y + c.h);-
183 requiredWidth = qMax(requiredWidth, c.x + c.w);-
184 ++iter;-
185 }
never executed: end of block
0
186 }-
187-
188 if (isNull()
isNull()Description
TRUEnever evaluated
FALSEnever evaluated
 || requiredHeight > m_h
requiredHeight > m_hDescription
TRUEnever evaluated
FALSEnever evaluated
 || requiredWidth > m_w
requiredWidth > m_wDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
189 if (isNull()
isNull()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
190 createCache(qNextPowerOfTwo(requiredWidth - 1), qNextPowerOfTwo(requiredHeight - 1));
never executed: createCache(qNextPowerOfTwo(requiredWidth - 1), qNextPowerOfTwo(requiredHeight - 1));
0
191 else-
192 resizeCache(qNextPowerOfTwo(requiredWidth - 1), qNextPowerOfTwo(requiredHeight - 1));
never executed: resizeCache(qNextPowerOfTwo(requiredWidth - 1), qNextPowerOfTwo(requiredHeight - 1));
0
193 }-
194-
195 {-
196 QHash<GlyphAndSubPixelPosition, Coord>::iterator iter = m_pendingGlyphs.begin();-
197 while (iter != m_pendingGlyphs.end()
iter != m_pendingGlyphs.end()Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
198 GlyphAndSubPixelPosition key = iter.key();-
199 fillTexture(iter.value(), key.glyph, key.subPixelPosition);-
200-
201 ++iter;-
202 }
never executed: end of block
0
203 }-
204-
205 m_pendingGlyphs.clear();-
206}
never executed: end of block
0
207-
208QImage QTextureGlyphCache::textureMapForGlyph(glyph_t g, QFixed subPixelPosition) const-
209{-
210 switch (m_format) {-
211 case
never executed: case QFontEngine::Format_A32:
 QFontEngine::Format_A32:
never executed: case QFontEngine::Format_A32:
0
212 return
never executed: return m_current_fontengine->alphaRGBMapForGlyph(g, subPixelPosition, m_transform);
 m_current_fontengine->alphaRGBMapForGlyph(g, subPixelPosition, m_transform);
never executed: return m_current_fontengine->alphaRGBMapForGlyph(g, subPixelPosition, m_transform);
0
213 case
never executed: case QFontEngine::Format_ARGB:
 QFontEngine::Format_ARGB:
never executed: case QFontEngine::Format_ARGB:
0
214 return
never executed: return m_current_fontengine->bitmapForGlyph(g, subPixelPosition, m_transform);
 m_current_fontengine->bitmapForGlyph(g, subPixelPosition, m_transform);
never executed: return m_current_fontengine->bitmapForGlyph(g, subPixelPosition, m_transform);
0
215 default
never executed: default:
:
never executed: default:
0
216 return
never executed: return m_current_fontengine->alphaMapForGlyph(g, subPixelPosition, m_transform);
 m_current_fontengine->alphaMapForGlyph(g, subPixelPosition, m_transform);
never executed: return m_current_fontengine->alphaMapForGlyph(g, subPixelPosition, m_transform);
0
217 }-
218}-
219-
220-
221-
222-
223-
224-
225QImageTextureGlyphCache::~QImageTextureGlyphCache()-
226{-
227}-
228-
229void QImageTextureGlyphCache::resizeTextureData(int width, int height)-
230{-
231 m_image = m_image.copy(0, 0, width, height);-
232}
never executed: end of block
0
233-
234void QImageTextureGlyphCache::createTextureData(int width, int height)-
235{-
236 switch (m_format) {-
237 case
never executed: case QFontEngine::Format_Mono:
 QFontEngine::Format_Mono:
never executed: case QFontEngine::Format_Mono:
0
238 m_image = QImage(width, height, QImage::Format_Mono);-
239 break;
never executed: break;
0
240 case
never executed: case QFontEngine::Format_A8:
 QFontEngine::Format_A8:
never executed: case QFontEngine::Format_A8:
0
241 m_image = QImage(width, height, QImage::Format_Alpha8);-
242 break;
never executed: break;
0
243 case
never executed: case QFontEngine::Format_A32:
 QFontEngine::Format_A32:
never executed: case QFontEngine::Format_A32:
0
244 m_image = QImage(width, height, QImage::Format_RGB32);-
245 break;
never executed: break;
0
246 case
never executed: case QFontEngine::Format_ARGB:
 QFontEngine::Format_ARGB:
never executed: case QFontEngine::Format_ARGB:
0
247 m_image = QImage(width, height, QImage::Format_ARGB32_Premultiplied);-
248 break;
never executed: break;
0
249 default
never executed: default:
:
never executed: default:
0
250 do { ((!(false)) ? qt_assert_x("Q_UNREACHABLE()", "Q_UNREACHABLE was reached",__FILE__,305) : qt_noop()); __builtin_unreachable(); } while (0);-
251 }
never executed: end of block
0
252}-
253-
254void QImageTextureGlyphCache::fillTexture(const Coord &c, glyph_t g, QFixed subPixelPosition)-
255{-
256 QImage mask = textureMapForGlyph(g, subPixelPosition);-
257 if (m_format == QFontEngine::Format_A32
m_format == QF...ne::Format_A32Description
TRUEnever evaluated
FALSEnever evaluated
0
258 || m_format == QFontEngine::Format_ARGB
m_format == QF...e::Format_ARGBDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
259 QImage ref(m_image.bits() + (c.x * 4 + c.y * m_image.bytesPerLine()),-
260 qMax(mask.width(), c.w), qMax(mask.height(), c.h), m_image.bytesPerLine(),-
261 m_image.format());-
262 QPainter p(&ref);-
263 p.setCompositionMode(QPainter::CompositionMode_Source);-
264 p.fillRect(0, 0, c.w, c.h, QColor(0,0,0,0));-
265 p.drawImage(0, 0, mask);-
266 p.end();-
267 }
never executed: end of block
 else if (m_format == QFontEngine::Format_Mono
m_format == QF...e::Format_MonoDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
268 if (mask.depth() > 1
mask.depth() > 1Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
269-
270 mask = mask.alphaChannel();-
271 mask.invertPixels();-
272 mask = mask.convertToFormat(QImage::Format_Mono);-
273 }
never executed: end of block
0
274-
275 int mw = qMin(mask.width(), c.w);-
276 int mh = qMin(mask.height(), c.h);-
277 uchar *d = m_image.bits();-
278 int dbpl = m_image.bytesPerLine();-
279-
280 for (int y = 0; y < c.h
y < c.hDescription
TRUEnever evaluated
FALSEnever evaluated
; ++y) {		0
281 uchar *dest = d + (c.y + y) *dbpl + c.x/8;-
282-
283 if (y < mh
y < mhDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
284 const uchar *src = mask.constScanLine(y);-
285 for (int x = 0; x < c.w/8
x < c.w/8Description
TRUEnever evaluated
FALSEnever evaluated
; ++x) {		0
286 if (x < (mw+7)/8
x < (mw+7)/8Description
TRUEnever evaluated
FALSEnever evaluated
)		0
287 dest[x] = src[x];
never executed: dest[x] = src[x];
0
288 else-
289 dest[x] = 0;
never executed: dest[x] = 0;
0
290 }-
291 }
never executed: end of block
 else {		0
292 for (int x = 0; x < c.w/8
x < c.w/8Description
TRUEnever evaluated
FALSEnever evaluated
; ++x)		0
293 dest[x] = 0;
never executed: dest[x] = 0;
0
294 }
never executed: end of block
0
295 }-
296 }
never executed: end of block
 else {		0
297 int mw = qMin(mask.width(), c.w);-
298 int mh = qMin(mask.height(), c.h);-
299 uchar *d = m_image.bits();-
300 int dbpl = m_image.bytesPerLine();-
301-
302 if (mask.depth() == 1
mask.depth() == 1Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
303 for (int y = 0; y < c.h
y < c.hDescription
TRUEnever evaluated
FALSEnever evaluated
; ++y) {		0
304 uchar *dest = d + (c.y + y) *dbpl + c.x;-
305 if (y < mh
y < mhDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
306 const uchar *src = mask.constScanLine(y);-
307 for (int x = 0; x < c.w
x < c.wDescription
TRUEnever evaluated
FALSEnever evaluated
; ++x) {		0
308 if (x < mw
x < mwDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
309 dest[x] = (
(src[x >> 3] &...(x & 7)))) > 0Description
TRUEnever evaluated
FALSEnever evaluated
src[x >> 3] & (1 << (7 - (x & 7)))) > 0
(src[x >> 3] &...(x & 7)))) > 0Description
TRUEnever evaluated
FALSEnever evaluated
 ? 255 : 0;
never executed: dest[x] = (src[x >> 3] & (1 << (7 - (x & 7)))) > 0 ? 255 : 0;
0
310 }
never executed: end of block
0
311 }
never executed: end of block
0
312 }
never executed: end of block
0
313 }
never executed: end of block
 else if (mask.depth() == 8
mask.depth() == 8Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
314 for (int y = 0; y < c.h
y < c.hDescription
TRUEnever evaluated
FALSEnever evaluated
; ++y) {		0
315 uchar *dest = d + (c.y + y) *dbpl + c.x;-
316 if (y < mh
y < mhDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
317 const uchar *src = mask.constScanLine(y);-
318 for (int x = 0; x < c.w
x < c.wDescription
TRUEnever evaluated
FALSEnever evaluated
; ++x) {		0
319 if (x < mw
x < mwDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
320 dest[x] = src[x];
never executed: dest[x] = src[x];
0
321 }
never executed: end of block
0
322 }
never executed: end of block
0
323 }
never executed: end of block
0
324 }
never executed: end of block
0
325 }
never executed: end of block
0
326}-
327-
328-
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