qpixmap_blitter.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2015 The Qt Company Ltd.-
4** Contact: http://www.qt.io/licensing/-
5**-
6** This file is part of the QtGui module of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL21$-
9** Commercial License Usage-
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15** information use the contact form at http://www.qt.io/contact-us.-
16**-
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 or version 3 as published by the Free-
20** Software Foundation and appearing in the file LICENSE.LGPLv21 and-
21** LICENSE.LGPLv3 included in the packaging of this file. Please review the-
22** following information to ensure the GNU Lesser General Public License-
23** requirements will be met: https://www.gnu.org/licenses/lgpl.html and-
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25**-
26** As a special exception, The Qt Company gives you certain additional-
27** rights. These rights are described in The Qt Company LGPL Exception-
28** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.-
29**-
30** $QT_END_LICENSE$-
31**-
32****************************************************************************/-
33-
34#include "qpixmap_blitter_p.h"-
35-
36#include <qpainter.h>-
37#include <qimage.h>-
38#include <qscreen.h>-
39-
40#include <private/qguiapplication_p.h>-
41#include <private/qblittable_p.h>-
42-
43#include <private/qdrawhelper_p.h>-
44#include <private/qfont_p.h>-
45-
46#ifndef QT_NO_BLITTABLE-
47QT_BEGIN_NAMESPACE-
48-
49static int global_ser_no = 0;-
50-
51QBlittablePlatformPixmap::QBlittablePlatformPixmap()-
52 : QPlatformPixmap(QPlatformPixmap::PixmapType,BlitterClass)-
53 , m_alpha(false)-
54 , m_devicePixelRatio(1.0)-
55#ifdef QT_BLITTER_RASTEROVERLAY-
56 ,m_rasterOverlay(0), m_unmergedCopy(0)-
57#endif //QT_BLITTER_RASTEROVERLAY-
58{-
59 setSerialNumber(++global_ser_no);-
60}
never executed: end of block
0
61-
62QBlittablePlatformPixmap::~QBlittablePlatformPixmap()-
63{-
64#ifdef QT_BLITTER_RASTEROVERLAY-
65 delete m_rasterOverlay;-
66 delete m_unmergedCopy;-
67#endif //QT_BLITTER_RASTEROVERLAY-
68}-
69-
70QBlittable *QBlittablePlatformPixmap::blittable() const-
71{-
72 if (!m_blittable) {
!m_blittableDescription
TRUEnever evaluated
FALSEnever evaluated
0
73 QBlittablePlatformPixmap *that = const_cast<QBlittablePlatformPixmap *>(this);-
74 that->m_blittable.reset(this->createBlittable(QSize(w, h), m_alpha));-
75 }
never executed: end of block
0
76-
77 return m_blittable.data();
never executed: return m_blittable.data();
0
78}-
79-
80void QBlittablePlatformPixmap::setBlittable(QBlittable *blittable)-
81{-
82 resize(blittable->size().width(),blittable->size().height());-
83 m_blittable.reset(blittable);-
84}
never executed: end of block
0
85-
86void QBlittablePlatformPixmap::resize(int width, int height)-
87{-
88 m_blittable.reset(0);-
89 m_engine.reset(0);-
90 d = QGuiApplication::primaryScreen()->depth();-
91 w = width;-
92 h = height;-
93 is_null = (w <= 0 || h <= 0);
w <= 0Description
TRUEnever evaluated
FALSEnever evaluated
h <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
94 setSerialNumber(++global_ser_no);-
95}
never executed: end of block
0
96-
97int QBlittablePlatformPixmap::metric(QPaintDevice::PaintDeviceMetric metric) const-
98{-
99 switch (metric) {-
100 case QPaintDevice::PdmWidth:
never executed: case QPaintDevice::PdmWidth:
0
101 return w;
never executed: return w;
0
102 case QPaintDevice::PdmHeight:
never executed: case QPaintDevice::PdmHeight:
0
103 return h;
never executed: return h;
0
104 case QPaintDevice::PdmWidthMM:
never executed: case QPaintDevice::PdmWidthMM:
0
105 return qRound(w * 25.4 / qt_defaultDpiX());
never executed: return qRound(w * 25.4 / qt_defaultDpiX());
0
106 case QPaintDevice::PdmHeightMM:
never executed: case QPaintDevice::PdmHeightMM:
0
107 return qRound(h * 25.4 / qt_defaultDpiY());
never executed: return qRound(h * 25.4 / qt_defaultDpiY());
0
108 case QPaintDevice::PdmDepth:
never executed: case QPaintDevice::PdmDepth:
0
109 return 32;
never executed: return 32;
0
110 case QPaintDevice::PdmDpiX: // fall-through
never executed: case QPaintDevice::PdmDpiX:
0
111 case QPaintDevice::PdmPhysicalDpiX:
never executed: case QPaintDevice::PdmPhysicalDpiX:
0
112 return qt_defaultDpiX();
never executed: return qt_defaultDpiX();
0
113 case QPaintDevice::PdmDpiY: // fall-through
never executed: case QPaintDevice::PdmDpiY:
0
114 case QPaintDevice::PdmPhysicalDpiY:
never executed: case QPaintDevice::PdmPhysicalDpiY:
0
115 return qt_defaultDpiY();
never executed: return qt_defaultDpiY();
0
116 case QPaintDevice::PdmDevicePixelRatio:
never executed: case QPaintDevice::PdmDevicePixelRatio:
0
117 return devicePixelRatio();
never executed: return devicePixelRatio();
0
118 case QPaintDevice::PdmDevicePixelRatioScaled:
never executed: case QPaintDevice::PdmDevicePixelRatioScaled:
0
119 return devicePixelRatio() * QPaintDevice::devicePixelRatioFScale();
never executed: return devicePixelRatio() * QPaintDevice::devicePixelRatioFScale();
0
120 default:
never executed: default:
0
121 qWarning("QRasterPlatformPixmap::metric(): Unhandled metric type %d", metric);-
122 break;
never executed: break;
0
123 }-
124-
125 return 0;
never executed: return 0;
0
126}-
127-
128void QBlittablePlatformPixmap::fill(const QColor &color)-
129{-
130 if (blittable()->capabilities() & QBlittable::AlphaFillRectCapability) {
blittable()->c...RectCapabilityDescription
TRUEnever evaluated
FALSEnever evaluated
0
131 blittable()->unlock();-
132 blittable()->alphaFillRect(QRectF(0,0,w,h),color,QPainter::CompositionMode_Source);-
133 } else if (color.alpha() == 255 && blittable()->capabilities() & QBlittable::SolidRectCapability) {
never executed: end of block
color.alpha() == 255Description
TRUEnever evaluated
FALSEnever evaluated
blittable()->c...RectCapabilityDescription
TRUEnever evaluated
FALSEnever evaluated
0
134 blittable()->unlock();-
135 blittable()->fillRect(QRectF(0,0,w,h),color);-
136 } else {
never executed: end of block
0
137 // Need to be backed with an alpha channel now. It would be nice-
138 // if we could just change the format, e.g. when going from-
139 // RGB32 -> ARGB8888.-
140 if (color.alpha() != 255 && !hasAlphaChannel()) {
color.alpha() != 255Description
TRUEnever evaluated
FALSEnever evaluated
!hasAlphaChannel()Description
TRUEnever evaluated
FALSEnever evaluated
0
141 m_blittable.reset(0);-
142 m_engine.reset(0);-
143 m_alpha = true;-
144 }
never executed: end of block
0
145-
146 uint pixel = qPremultiply(color.rgba());-
147 const QPixelLayout *layout = &qPixelLayouts[blittable()->lock()->format()];-
148 Q_ASSERT(layout->convertFromARGB32PM);-
149 layout->convertFromARGB32PM(&pixel, &pixel, 1, layout, 0);-
150-
151 //so premultiplied formats are supported and ARGB32 and RGB32-
152 blittable()->lock()->fill(pixel);-
153 }
never executed: end of block
0
154-
155}-
156-
157QImage *QBlittablePlatformPixmap::buffer()-
158{-
159 return blittable()->lock();
never executed: return blittable()->lock();
0
160}-
161-
162QImage QBlittablePlatformPixmap::toImage() const-
163{-
164 return blittable()->lock()->copy();
never executed: return blittable()->lock()->copy();
0
165}-
166-
167bool QBlittablePlatformPixmap::hasAlphaChannel() const-
168{-
169 return blittable()->lock()->hasAlphaChannel();
never executed: return blittable()->lock()->hasAlphaChannel();
0
170}-
171-
172void QBlittablePlatformPixmap::fromImage(const QImage &image,-
173 Qt::ImageConversionFlags flags)-
174{-
175 m_alpha = image.hasAlphaChannel();-
176 m_devicePixelRatio = image.devicePixelRatio();-
177 resize(image.width(),image.height());-
178 markRasterOverlay(QRect(0,0,w,h));-
179 QImage *thisImg = buffer();-
180-
181 QImage correctFormatPic = image;-
182 if (correctFormatPic.format() != thisImg->format())
correctFormatP...sImg->format()Description
TRUEnever evaluated
FALSEnever evaluated
0
183 correctFormatPic = correctFormatPic.convertToFormat(thisImg->format(), flags);
never executed: correctFormatPic = correctFormatPic.convertToFormat(thisImg->format(), flags);
0
184-
185 uchar *mem = thisImg->bits();-
186 const uchar *bits = correctFormatPic.constBits();-
187 int bytesCopied = 0;-
188 while (bytesCopied < correctFormatPic.byteCount()) {
bytesCopied < ...ic.byteCount()Description
TRUEnever evaluated
FALSEnever evaluated
0
189 memcpy(mem,bits,correctFormatPic.bytesPerLine());-
190 mem += thisImg->bytesPerLine();-
191 bits += correctFormatPic.bytesPerLine();-
192 bytesCopied+=correctFormatPic.bytesPerLine();-
193 }
never executed: end of block
0
194}
never executed: end of block
0
195-
196qreal QBlittablePlatformPixmap::devicePixelRatio() const-
197{-
198 return m_devicePixelRatio;
never executed: return m_devicePixelRatio;
0
199}-
200-
201void QBlittablePlatformPixmap::setDevicePixelRatio(qreal scaleFactor)-
202{-
203 m_devicePixelRatio = scaleFactor;-
204}
never executed: end of block
0
205-
206QPaintEngine *QBlittablePlatformPixmap::paintEngine() const-
207{-
208 if (!m_engine) {
!m_engineDescription
TRUEnever evaluated
FALSEnever evaluated
0
209 QBlittablePlatformPixmap *that = const_cast<QBlittablePlatformPixmap *>(this);-
210 that->m_engine.reset(new QBlitterPaintEngine(that));-
211 }
never executed: end of block
0
212 return m_engine.data();
never executed: return m_engine.data();
0
213}-
214-
215#ifdef QT_BLITTER_RASTEROVERLAY-
216-
217static bool showRasterOverlay = !qEnvironmentVariableIsEmpty("QT_BLITTER_RASTEROVERLAY");-
218-
219void QBlittablePlatformPixmap::mergeOverlay()-
220{-
221 if (m_unmergedCopy || !showRasterOverlay)-
222 return;-
223 m_unmergedCopy = new QImage(buffer()->copy());-
224 QPainter p(buffer());-
225 p.setCompositionMode(QPainter::CompositionMode_SourceOver);-
226 p.drawImage(0,0,*overlay());-
227 p.end();-
228}-
229-
230void QBlittablePlatformPixmap::unmergeOverlay()-
231{-
232 if (!m_unmergedCopy || !showRasterOverlay)-
233 return;-
234 QPainter p(buffer());-
235 p.setCompositionMode(QPainter::CompositionMode_Source);-
236 p.drawImage(0,0,*m_unmergedCopy);-
237 p.end();-
238-
239 delete m_unmergedCopy;-
240 m_unmergedCopy = 0;-
241}-
242-
243QImage *QBlittablePlatformPixmap::overlay()-
244{-
245 if (!m_rasterOverlay||-
246 m_rasterOverlay->size() != QSize(w,h)){-
247 m_rasterOverlay = new QImage(w,h,QImage::Format_ARGB32_Premultiplied);-
248 m_rasterOverlay->fill(0x00000000);-
249 uint color = (qrand() % 11)+7;-
250 m_overlayColor = QColor(Qt::GlobalColor(color));-
251 m_overlayColor.setAlpha(0x88);-
252-
253 }-
254 return m_rasterOverlay;-
255}-
256-
257void QBlittablePlatformPixmap::markRasterOverlayImpl(const QRectF &rect)-
258{-
259 if (!showRasterOverlay)-
260 return;-
261 QRectF transformationRect = clipAndTransformRect(rect);-
262 if(!transformationRect.isEmpty()) {-
263 QPainter p(overlay());-
264 p.setBrush(m_overlayColor);-
265 p.setCompositionMode(QPainter::CompositionMode_Source);-
266 p.fillRect(transformationRect,QBrush(m_overlayColor));-
267 }-
268}-
269-
270void QBlittablePlatformPixmap::unmarkRasterOverlayImpl(const QRectF &rect)-
271{-
272 if (!showRasterOverlay)-
273 return;-
274 QRectF transformationRect = clipAndTransformRect(rect);-
275 if (!transformationRect.isEmpty()) {-
276 QPainter p(overlay());-
277 QColor color(0x00,0x00,0x00,0x00);-
278 p.setBrush(color);-
279 p.setCompositionMode(QPainter::CompositionMode_Source);-
280 p.fillRect(transformationRect,QBrush(color));-
281 }-
282}-
283-
284QRectF QBlittablePlatformPixmap::clipAndTransformRect(const QRectF &rect) const-
285{-
286 QRectF transformationRect = rect;-
287 paintEngine();-
288 if (m_engine->state()) {-
289 transformationRect = m_engine->state()->matrix.mapRect(rect);-
290 const QClipData *clipData = m_engine->clip();-
291 if (clipData) {-
292 if (clipData->hasRectClip) {-
293 transformationRect &= clipData->clipRect;-
294 } else if (clipData->hasRegionClip) {-
295 const QVector<QRect> rects = clipData->clipRegion.rects();-
296 for (int i = 0; i < rects.size(); i++) {-
297 transformationRect &= rects.at(i);-
298 }-
299 }-
300 }-
301 }-
302 return transformationRect;-
303}-
304-
305#endif //QT_BLITTER_RASTEROVERLAY-
306-
307QT_END_NAMESPACE-
308-
309#endif //QT_NO_BLITTABLE-
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