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qquickcontext2d_p.h

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1/****************************************************************************-
2**-
3** Copyright (C) 2016 The Qt Company Ltd.-
4** Contact: https://www.qt.io/licensing/-
5**-
6** This file is part of the QtQuick module of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL$-
9** Commercial License Usage-
10** Licensees holding valid commercial Qt licenses may use this file in-
11** accordance with the commercial license agreement provided with the-
12** Software or, alternatively, in accordance with the terms contained in-
13** a written agreement between you and The Qt Company. For licensing terms-
14** and conditions see https://www.qt.io/terms-conditions. For further-
15** information use the contact form at https://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 3 as published by the Free Software-
20** Foundation and appearing in the file LICENSE.LGPL3 included in the-
21** packaging of this file. Please review the following information to-
22** ensure the GNU Lesser General Public License version 3 requirements-
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.-
24**-
25** GNU General Public License Usage-
26** Alternatively, this file may be used under the terms of the GNU-
27** General Public License version 2.0 or (at your option) the GNU General-
28** Public license version 3 or any later version approved by the KDE Free-
29** Qt Foundation. The licenses are as published by the Free Software-
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3-
31** included in the packaging of this file. Please review the following-
32** information to ensure the GNU General Public License requirements will-
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and-
34** https://www.gnu.org/licenses/gpl-3.0.html.-
35**-
36** $QT_END_LICENSE$-
37**-
38****************************************************************************/-
39-
40#ifndef QQUICKCONTEXT2D_P_H-
41#define QQUICKCONTEXT2D_P_H-
42-
43//-
44// W A R N I N G-
45// --------------
46//-
47// This file is not part of the Qt API. It exists purely as an-
48// implementation detail. This header file may change from version to-
49// version without notice, or even be removed.-
50//-
51// We mean it.-
52//-
53-
54#include <private/qtquickglobal_p.h>-
55-
56QT_REQUIRE_CONFIG(quick_canvas);-
57-
58#include <QtQml/qqml.h>-
59#include <QtQml/qqmlcomponent.h>-
60#include <private/qquickcanvascontext_p.h>-
61#include <private/qquickcanvasitem_p.h>-
62#include <QtGui/qpainter.h>-
63#include <QtGui/qpainterpath.h>-
64#include <QtGui/qoffscreensurface.h>-
65#include <QtCore/qstring.h>-
66#include <QtCore/qstack.h>-
67#include <QtCore/qqueue.h>-
68#include <private/qv8engine_p.h>-
69#include <QtCore/QWaitCondition>-
70-
71#include <private/qv4value_p.h>-
72#include <private/qv4persistent_p.h>-
73-
74//#define QQUICKCONTEXT2D_DEBUG //enable this for just DEBUG purpose!-
75-
76#ifdef QQUICKCONTEXT2D_DEBUG-
77#include <QElapsedTimer>-
78#endif-
79-
80QT_BEGIN_NAMESPACE-
81-
82class QQuickContext2DCommandBuffer;-
83class QQuickContext2DTexture;-
84class QQuickPixmap;-
85class QSGTexture;-
86class QSurface;-
87class QOpenGLContext;-
88-
89class QQuickContext2D : public QQuickCanvasContext-
90{-
91 Q_OBJECT-
92-
93public:-
94 Q_DISABLE_COPY(QQuickContext2D)-
95-
96 enum TextBaseLineType { Alphabetic=0, Top, Middle, Bottom, Hanging};-
97 enum TextAlignType { Start=0, End, Left, Right, Center};-
98 enum PaintCommand {-
99 Invalid = 0,-
100 UpdateMatrix,-
101 ClearRect,-
102 FillRect,-
103 StrokeRect,-
104 Fill,-
105 Stroke,-
106 Clip,-
107 UpdateBrush,-
108 GlobalAlpha,-
109 GlobalCompositeOperation,-
110 StrokeStyle,-
111 FillStyle,-
112 LineWidth,-
113 LineCap,-
114 LineJoin,-
115 MiterLimit,-
116 ShadowOffsetX,-
117 ShadowOffsetY,-
118 ShadowBlur,-
119 ShadowColor,-
120 Font,-
121 TextBaseline,-
122 TextAlign,-
123 FillText,-
124 StrokeText,-
125 DrawImage,-
126 DrawPixmap,-
127 GetImageData-
128 };-
129-
130 struct State {-
131 State()-
132 : strokeStyle(QColor(Qt::black))-
133 , fillStyle(QColor(Qt::black))-
134 , fillPatternRepeatX(false)-
135 , fillPatternRepeatY(false)-
136 , strokePatternRepeatX(false)-
137 , strokePatternRepeatY(false)-
138 , invertibleCTM(true)-
139 , clip(false)-
140 , fillRule(Qt::WindingFill)-
141 , globalAlpha(1.0)-
142 , lineWidth(1)-
143 , lineCap(Qt::FlatCap)-
144 , lineJoin(Qt::MiterJoin)-
145 , miterLimit(10)-
146 , shadowOffsetX(0)-
147 , shadowOffsetY(0)-
148 , shadowBlur(0)-
149 , shadowColor(qRgba(0, 0, 0, 0))-
150 , globalCompositeOperation(QPainter::CompositionMode_SourceOver)-
151 , font(QFont(QLatin1String("sans-serif")))-
152 , textAlign(QQuickContext2D::Start)-
153 , textBaseline(QQuickContext2D::Alphabetic)-
154 {-
155 font.setPixelSize(10);-
156 }
never executed: end of block
0
157-
158 QTransform matrix;-
159 QPainterPath clipPath;-
160 QBrush strokeStyle;-
161 QBrush fillStyle;-
162 bool fillPatternRepeatX:1;-
163 bool fillPatternRepeatY:1;-
164 bool strokePatternRepeatX:1;-
165 bool strokePatternRepeatY:1;-
166 bool invertibleCTM:1;-
167 bool clip:1;-
168 Qt::FillRule fillRule;-
169 qreal globalAlpha;-
170 qreal lineWidth;-
171 Qt::PenCapStyle lineCap;-
172 Qt::PenJoinStyle lineJoin;-
173 qreal miterLimit;-
174 qreal shadowOffsetX;-
175 qreal shadowOffsetY;-
176 qreal shadowBlur;-
177 QColor shadowColor;-
178 QPainter::CompositionMode globalCompositeOperation;-
179 QFont font;-
180 QQuickContext2D::TextAlignType textAlign;-
181 QQuickContext2D::TextBaseLineType textBaseline;-
182 };-
183-
184 QQuickContext2D(QObject *parent = nullptr);-
185 ~QQuickContext2D();-
186-
187 QStringList contextNames() const override;-
188 void init(QQuickCanvasItem *canvasItem, const QVariantMap &args) override;-
189 void prepare(const QSize& canvasSize, const QSize& tileSize, const QRect& canvasWindow, const QRect& dirtyRect, bool smooth, bool antialiasing) override;-
190 void flush() override;-
191 void sync();-
192 QThread *thread() const { return m_thread; }
never executed: return m_thread;
0
193 QQuickContext2DTexture *texture() const;-
194 QImage toImage(const QRectF& bounds) override;-
195-
196 QV4::ReturnedValue v4value() const override;-
197 void setV4Engine(QV4::ExecutionEngine *eng) override;-
198-
199 QQuickCanvasItem* canvas() const { return m_canvas; }
never executed: return m_canvas;
0
200 QQuickContext2DCommandBuffer* buffer() const { return m_buffer; }
never executed: return m_buffer;
0
201-
202 bool bufferValid() const { return m_buffer != nullptr; }
never executed: return m_buffer != nullptr;
0
203 void popState();-
204 void pushState();-
205 void reset();-
206-
207 void fill();-
208 void clip();-
209 void stroke();-
210 void fillRect(qreal x, qreal y, qreal w, qreal h);-
211 void strokeRect(qreal x, qreal y, qreal w, qreal h);-
212 void clearRect(qreal x, qreal y, qreal w, qreal h);-
213 void drawText(const QString& text, qreal x, qreal y, bool fill);-
214-
215 //Transform APIs-
216 void scale(qreal x, qreal y);-
217 void rotate(qreal angle);-
218 void shear(qreal h, qreal v);-
219 void translate(qreal x, qreal y);-
220 void transform(qreal a, qreal b, qreal c, qreal d, qreal e, qreal f);-
221 void setTransform(qreal a, qreal b, qreal c, qreal d, qreal e, qreal f);-
222-
223 // Path APIs-
224 void beginPath();-
225 void closePath();-
226 void moveTo(qreal x, qreal y);-
227 void lineTo(qreal x, qreal y);-
228 void quadraticCurveTo(qreal cpx, qreal cpy, qreal x, qreal y);-
229 void bezierCurveTo(qreal cp1x, qreal cp1y,-
230 qreal cp2x, qreal cp2y, qreal x, qreal y);-
231 void arcTo(qreal x1, qreal y1, qreal x2, qreal y2, qreal radius);-
232 void rect(qreal x, qreal y, qreal w, qreal h);-
233 void roundedRect(qreal x, qreal y,qreal w, qreal h, qreal xr, qreal yr);-
234 void ellipse(qreal x, qreal y,qreal w, qreal h);-
235 void text(const QString& str, qreal x, qreal y);-
236 void arc(qreal x, qreal y, qreal radius,-
237 qreal startAngle, qreal endAngle,-
238 bool anticlockwise);-
239 void addArcTo(const QPointF& p1, const QPointF& p2, float radius);-
240-
241 bool isPointInPath(qreal x, qreal y) const;-
242-
243 QPainterPath createTextGlyphs(qreal x, qreal y, const QString& text);-
244 QQmlRefPointer<QQuickCanvasPixmap> createPixmap(const QUrl& url);-
245-
246 QOpenGLContext *glContext() const { return m_glContext; }
never executed: return m_glContext;
0
247 QSurface *surface() const { return m_surface.data(); }
never executed: return m_surface.data();
0
248 void setGrabbedImage(const QImage& grab);-
249-
250 State state;-
251 QStack<QQuickContext2D::State> m_stateStack;-
252 QQuickCanvasItem* m_canvas;-
253 QQuickContext2DCommandBuffer* m_buffer;-
254 QPainterPath m_path;-
255 QV4::PersistentValue m_fillStyle;-
256 QV4::PersistentValue m_strokeStyle;-
257 QV4::PersistentValue m_v4path;-
258 QV4::ExecutionEngine *m_v4engine;-
259 QScopedPointer<QOffscreenSurface> m_surface;-
260 QOpenGLContext *m_glContext;-
261 QV4::PersistentValue m_v4value;-
262 QQuickContext2DTexture *m_texture;-
263 QQuickCanvasItem::RenderTarget m_renderTarget;-
264 QQuickCanvasItem::RenderStrategy m_renderStrategy;-
265 QQueue<QQuickContext2DCommandBuffer*> m_bufferQueue;-
266 QThread *m_thread;-
267 QImage m_grabbedImage;-
268 bool m_grabbed:1;-
269-
270 static QMutex mutex;-
271};-
272-
273-
274QT_END_NAMESPACE-
275QML_DECLARE_TYPE(QQuickContext2D)-
276-
277#endif // QQUICKCONTEXT2D_P_H-
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