image/qpixmap_blitter.cpp

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1/**************************************************************************** -
2** -
3** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). -
4** Contact: http://www.qt-project.org/legal -
5** -
6** This file is part of the QtGui module of the Qt Toolkit. -
7** -
8** $QT_BEGIN_LICENSE:LGPL$ -
9** Commercial License Usage -
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11** accordance with the commercial license agreement provided with the -
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17** GNU Lesser General Public License Usage -
18** Alternatively, this file may be used under the terms of the GNU Lesser -
19** General Public License version 2.1 as published by the Free Software -
20** Foundation and appearing in the file LICENSE.LGPL included in the -
21** packaging of this file. Please review the following information to -
22** ensure the GNU Lesser General Public License version 2.1 requirements -
23** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -
24** -
25** In addition, as a special exception, Digia gives you certain additional -
26** rights. These rights are described in the Digia Qt LGPL Exception -
27** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -
28** -
29** GNU General Public License Usage -
30** Alternatively, this file may be used under the terms of the GNU -
31** General Public License version 3.0 as published by the Free Software -
32** Foundation and appearing in the file LICENSE.GPL included in the -
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34** ensure the GNU General Public License version 3.0 requirements will be -
35** met: http://www.gnu.org/copyleft/gpl.html. -
36** -
37** -
38** $QT_END_LICENSE$ -
39** -
40****************************************************************************/ -
41 -
42#include "qpixmap_blitter_p.h" -
43 -
44#include <qpainter.h> -
45#include <qimage.h> -
46#include <qscreen.h> -
47 -
48#include <private/qguiapplication_p.h> -
49#include <private/qblittable_p.h> -
50 -
51#include <private/qdrawhelper_p.h> -
52#include <private/qfont_p.h> -
53 -
54#ifndef QT_NO_BLITTABLE -
55QT_BEGIN_NAMESPACE -
56 -
57static int global_ser_no = 0; -
58 -
59QBlittablePlatformPixmap::QBlittablePlatformPixmap() -
60 : QPlatformPixmap(QPlatformPixmap::PixmapType,BlitterClass) -
61 , m_alpha(false) -
62#ifdef QT_BLITTER_RASTEROVERLAY -
63 ,m_rasterOverlay(0), m_unmergedCopy(0) -
64#endif //QT_BLITTER_RASTEROVERLAY -
65{ -
66 setSerialNumber(++global_ser_no);
never executed (the execution status of this line is deduced): setSerialNumber(++global_ser_no);
-
67}
never executed: }
0
68 -
69QBlittablePlatformPixmap::~QBlittablePlatformPixmap() -
70{ -
71#ifdef QT_BLITTER_RASTEROVERLAY -
72 delete m_rasterOverlay; -
73 delete m_unmergedCopy; -
74#endif //QT_BLITTER_RASTEROVERLAY -
75} -
76 -
77QBlittable *QBlittablePlatformPixmap::blittable() const -
78{ -
79 if (!m_blittable) {
never evaluated: !m_blittable
0
80 QBlittablePlatformPixmap *that = const_cast<QBlittablePlatformPixmap *>(this);
never executed (the execution status of this line is deduced): QBlittablePlatformPixmap *that = const_cast<QBlittablePlatformPixmap *>(this);
-
81 that->m_blittable.reset(this->createBlittable(QSize(w, h), m_alpha));
never executed (the execution status of this line is deduced): that->m_blittable.reset(this->createBlittable(QSize(w, h), m_alpha));
-
82 }
never executed: }
0
83 -
84 return m_blittable.data();
never executed: return m_blittable.data();
0
85} -
86 -
87void QBlittablePlatformPixmap::setBlittable(QBlittable *blittable) -
88{ -
89 resize(blittable->size().width(),blittable->size().height());
never executed (the execution status of this line is deduced): resize(blittable->size().width(),blittable->size().height());
-
90 m_blittable.reset(blittable);
never executed (the execution status of this line is deduced): m_blittable.reset(blittable);
-
91}
never executed: }
0
92 -
93void QBlittablePlatformPixmap::resize(int width, int height) -
94{ -
95 m_blittable.reset(0);
never executed (the execution status of this line is deduced): m_blittable.reset(0);
-
96 m_engine.reset(0);
never executed (the execution status of this line is deduced): m_engine.reset(0);
-
97 d = QGuiApplication::primaryScreen()->depth();
never executed (the execution status of this line is deduced): d = QGuiApplication::primaryScreen()->depth();
-
98 w = width;
never executed (the execution status of this line is deduced): w = width;
-
99 h = height;
never executed (the execution status of this line is deduced): h = height;
-
100 is_null = (w <= 0 || h <= 0);
never evaluated: w <= 0
never evaluated: h <= 0
0
101 setSerialNumber(++global_ser_no);
never executed (the execution status of this line is deduced): setSerialNumber(++global_ser_no);
-
102}
never executed: }
0
103 -
104int QBlittablePlatformPixmap::metric(QPaintDevice::PaintDeviceMetric metric) const -
105{ -
106 switch (metric) { -
107 case QPaintDevice::PdmWidth: -
108 return w;
never executed: return w;
0
109 case QPaintDevice::PdmHeight: -
110 return h;
never executed: return h;
0
111 case QPaintDevice::PdmWidthMM: -
112 return qRound(w * 25.4 / qt_defaultDpiX());
never executed: return qRound(w * 25.4 / qt_defaultDpiX());
0
113 case QPaintDevice::PdmHeightMM: -
114 return qRound(h * 25.4 / qt_defaultDpiY());
never executed: return qRound(h * 25.4 / qt_defaultDpiY());
0
115 case QPaintDevice::PdmDepth: -
116 return 32;
never executed: return 32;
0
117 case QPaintDevice::PdmDpiX: // fall-through -
118 case QPaintDevice::PdmPhysicalDpiX: -
119 return qt_defaultDpiX();
never executed: return qt_defaultDpiX();
0
120 case QPaintDevice::PdmDpiY: // fall-through -
121 case QPaintDevice::PdmPhysicalDpiY: -
122 return qt_defaultDpiY();
never executed: return qt_defaultDpiY();
0
123 default: -
124 qWarning("QRasterPlatformPixmap::metric(): Unhandled metric type %d", metric);
never executed (the execution status of this line is deduced): QMessageLogger("image/qpixmap_blitter.cpp", 124, __PRETTY_FUNCTION__).warning("QRasterPlatformPixmap::metric(): Unhandled metric type %d", metric);
-
125 break;
never executed: break;
0
126 } -
127 -
128 return 0;
never executed: return 0;
0
129} -
130 -
131void QBlittablePlatformPixmap::fill(const QColor &color) -
132{ -
133 if (blittable()->capabilities() & QBlittable::AlphaFillRectCapability) {
never evaluated: blittable()->capabilities() & QBlittable::AlphaFillRectCapability
0
134 blittable()->unlock();
never executed (the execution status of this line is deduced): blittable()->unlock();
-
135 blittable()->alphaFillRect(QRectF(0,0,w,h),color,QPainter::CompositionMode_Source);
never executed (the execution status of this line is deduced): blittable()->alphaFillRect(QRectF(0,0,w,h),color,QPainter::CompositionMode_Source);
-
136 } else if (color.alpha() == 255 && blittable()->capabilities() & QBlittable::SolidRectCapability) {
never executed: }
never evaluated: color.alpha() == 255
never evaluated: blittable()->capabilities() & QBlittable::SolidRectCapability
0
137 blittable()->unlock();
never executed (the execution status of this line is deduced): blittable()->unlock();
-
138 blittable()->fillRect(QRectF(0,0,w,h),color);
never executed (the execution status of this line is deduced): blittable()->fillRect(QRectF(0,0,w,h),color);
-
139 } else {
never executed: }
0
140 // Need to be backed with an alpha channel now. It would be nice -
141 // if we could just change the format, e.g. when going from -
142 // RGB32 -> ARGB8888. -
143 if (color.alpha() != 255 && !hasAlphaChannel()) {
never evaluated: color.alpha() != 255
never evaluated: !hasAlphaChannel()
0
144 m_blittable.reset(0);
never executed (the execution status of this line is deduced): m_blittable.reset(0);
-
145 m_engine.reset(0);
never executed (the execution status of this line is deduced): m_engine.reset(0);
-
146 m_alpha = true;
never executed (the execution status of this line is deduced): m_alpha = true;
-
147 }
never executed: }
0
148 -
149 uint pixel = PREMUL(color.rgba());
never executed (the execution status of this line is deduced): uint pixel = PREMUL(color.rgba());
-
150 const QPixelLayout *layout = &qPixelLayouts[blittable()->lock()->format()];
never executed (the execution status of this line is deduced): const QPixelLayout *layout = &qPixelLayouts[blittable()->lock()->format()];
-
151 Q_ASSERT(layout->convertFromARGB32PM);
never executed (the execution status of this line is deduced): qt_noop();
-
152 layout->convertFromARGB32PM(&pixel, &pixel, 1, layout, 0);
never executed (the execution status of this line is deduced): layout->convertFromARGB32PM(&pixel, &pixel, 1, layout, 0);
-
153 -
154 //so premultiplied formats are supported and ARGB32 and RGB32 -
155 blittable()->lock()->fill(pixel);
never executed (the execution status of this line is deduced): blittable()->lock()->fill(pixel);
-
156 }
never executed: }
0
157 -
158} -
159 -
160QImage *QBlittablePlatformPixmap::buffer() -
161{ -
162 return blittable()->lock();
never executed: return blittable()->lock();
0
163} -
164 -
165QImage QBlittablePlatformPixmap::toImage() const -
166{ -
167 return blittable()->lock()->copy();
never executed: return blittable()->lock()->copy();
0
168} -
169 -
170bool QBlittablePlatformPixmap::hasAlphaChannel() const -
171{ -
172 return blittable()->lock()->hasAlphaChannel();
never executed: return blittable()->lock()->hasAlphaChannel();
0
173} -
174 -
175void QBlittablePlatformPixmap::fromImage(const QImage &image, -
176 Qt::ImageConversionFlags flags) -
177{ -
178 m_alpha = image.hasAlphaChannel();
never executed (the execution status of this line is deduced): m_alpha = image.hasAlphaChannel();
-
179 resize(image.width(),image.height());
never executed (the execution status of this line is deduced): resize(image.width(),image.height());
-
180 markRasterOverlay(QRect(0,0,w,h));
never executed (the execution status of this line is deduced): markRasterOverlay(QRect(0,0,w,h));
-
181 QImage *thisImg = buffer();
never executed (the execution status of this line is deduced): QImage *thisImg = buffer();
-
182 -
183 QImage correctFormatPic = image;
never executed (the execution status of this line is deduced): QImage correctFormatPic = image;
-
184 if (correctFormatPic.format() != thisImg->format())
never evaluated: correctFormatPic.format() != thisImg->format()
0
185 correctFormatPic = correctFormatPic.convertToFormat(thisImg->format(), flags);
never executed: correctFormatPic = correctFormatPic.convertToFormat(thisImg->format(), flags);
0
186 -
187 uchar *mem = thisImg->bits();
never executed (the execution status of this line is deduced): uchar *mem = thisImg->bits();
-
188 const uchar *bits = correctFormatPic.bits();
never executed (the execution status of this line is deduced): const uchar *bits = correctFormatPic.bits();
-
189 int bytesCopied = 0;
never executed (the execution status of this line is deduced): int bytesCopied = 0;
-
190 while (bytesCopied < correctFormatPic.byteCount()) {
never evaluated: bytesCopied < correctFormatPic.byteCount()
0
191 memcpy(mem,bits,correctFormatPic.bytesPerLine());
never executed (the execution status of this line is deduced): memcpy(mem,bits,correctFormatPic.bytesPerLine());
-
192 mem += thisImg->bytesPerLine();
never executed (the execution status of this line is deduced): mem += thisImg->bytesPerLine();
-
193 bits += correctFormatPic.bytesPerLine();
never executed (the execution status of this line is deduced): bits += correctFormatPic.bytesPerLine();
-
194 bytesCopied+=correctFormatPic.bytesPerLine();
never executed (the execution status of this line is deduced): bytesCopied+=correctFormatPic.bytesPerLine();
-
195 }
never executed: }
0
196}
never executed: }
0
197 -
198qreal QBlittablePlatformPixmap::devicePixelRatio() const -
199{ -
200 return m_devicePixelRatio;
never executed: return m_devicePixelRatio;
0
201} -
202 -
203void QBlittablePlatformPixmap::setDevicePixelRatio(qreal scaleFactor) -
204{ -
205 m_devicePixelRatio = scaleFactor;
never executed (the execution status of this line is deduced): m_devicePixelRatio = scaleFactor;
-
206}
never executed: }
0
207 -
208QPaintEngine *QBlittablePlatformPixmap::paintEngine() const -
209{ -
210 if (!m_engine) {
never evaluated: !m_engine
0
211 QBlittablePlatformPixmap *that = const_cast<QBlittablePlatformPixmap *>(this);
never executed (the execution status of this line is deduced): QBlittablePlatformPixmap *that = const_cast<QBlittablePlatformPixmap *>(this);
-
212 that->m_engine.reset(new QBlitterPaintEngine(that));
never executed (the execution status of this line is deduced): that->m_engine.reset(new QBlitterPaintEngine(that));
-
213 }
never executed: }
0
214 return m_engine.data();
never executed: return m_engine.data();
0
215} -
216 -
217#ifdef QT_BLITTER_RASTEROVERLAY -
218 -
219static bool showRasterOverlay = !qEnvironmentVariableIsEmpty("QT_BLITTER_RASTEROVERLAY"); -
220 -
221void QBlittablePlatformPixmap::mergeOverlay() -
222{ -
223 if (m_unmergedCopy || !showRasterOverlay) -
224 return; -
225 m_unmergedCopy = new QImage(buffer()->copy()); -
226 QPainter p(buffer()); -
227 p.setCompositionMode(QPainter::CompositionMode_SourceOver); -
228 p.drawImage(0,0,*overlay()); -
229 p.end(); -
230} -
231 -
232void QBlittablePlatformPixmap::unmergeOverlay() -
233{ -
234 if (!m_unmergedCopy || !showRasterOverlay) -
235 return; -
236 QPainter p(buffer()); -
237 p.setCompositionMode(QPainter::CompositionMode_Source); -
238 p.drawImage(0,0,*m_unmergedCopy); -
239 p.end(); -
240 -
241 delete m_unmergedCopy; -
242 m_unmergedCopy = 0; -
243} -
244 -
245QImage *QBlittablePlatformPixmap::overlay() -
246{ -
247 if (!m_rasterOverlay|| -
248 m_rasterOverlay->size() != QSize(w,h)){ -
249 m_rasterOverlay = new QImage(w,h,QImage::Format_ARGB32_Premultiplied); -
250 m_rasterOverlay->fill(0x00000000); -
251 uint color = (qrand() % 11)+7; -
252 m_overlayColor = QColor(Qt::GlobalColor(color)); -
253 m_overlayColor.setAlpha(0x88); -
254 -
255 } -
256 return m_rasterOverlay; -
257} -
258 -
259void QBlittablePlatformPixmap::markRasterOverlayImpl(const QRectF &rect) -
260{ -
261 if (!showRasterOverlay) -
262 return; -
263 QRectF transformationRect = clipAndTransformRect(rect); -
264 if(!transformationRect.isEmpty()) { -
265 QPainter p(overlay()); -
266 p.setBrush(m_overlayColor); -
267 p.setCompositionMode(QPainter::CompositionMode_Source); -
268 p.fillRect(transformationRect,QBrush(m_overlayColor)); -
269 } -
270} -
271 -
272void QBlittablePlatformPixmap::unmarkRasterOverlayImpl(const QRectF &rect) -
273{ -
274 if (!showRasterOverlay) -
275 return; -
276 QRectF transformationRect = clipAndTransformRect(rect); -
277 if (!transformationRect.isEmpty()) { -
278 QPainter p(overlay()); -
279 QColor color(0x00,0x00,0x00,0x00); -
280 p.setBrush(color); -
281 p.setCompositionMode(QPainter::CompositionMode_Source); -
282 p.fillRect(transformationRect,QBrush(color)); -
283 } -
284} -
285 -
286QRectF QBlittablePlatformPixmap::clipAndTransformRect(const QRectF &rect) const -
287{ -
288 QRectF transformationRect = rect; -
289 paintEngine(); -
290 if (m_engine->state()) { -
291 transformationRect = m_engine->state()->matrix.mapRect(rect); -
292 const QClipData *clipData = m_engine->clip(); -
293 if (clipData) { -
294 if (clipData->hasRectClip) { -
295 transformationRect &= clipData->clipRect; -
296 } else if (clipData->hasRegionClip) { -
297 const QVector<QRect> rects = clipData->clipRegion.rects(); -
298 for (int i = 0; i < rects.size(); i++) { -
299 transformationRect &= rects.at(i); -
300 } -
301 } -
302 } -
303 } -
304 return transformationRect; -
305} -
306 -
307#endif //QT_BLITTER_RASTEROVERLAY -
308 -
309QT_END_NAMESPACE -
310 -
311#endif //QT_NO_BLITTABLE -
312 -
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