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Internal/Contributor docs for the Qt SDK. <b>Note:</b> These are NOT official API docs; those are found <a href='https://doc.qt.io/'>here</a>.
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qquickshapecurverenderer_p.h
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1// Copyright (C) 2022 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#ifndef QQUICKSHAPECURVERENDERER_P_H
5#define QQUICKSHAPECURVERENDERER_P_H
6
7//
8// W A R N I N G
9// -------------
10//
11// This file is not part of the Qt API. It exists for the convenience
12// of a number of Qt sources files. This header file may change from
13// version to version without notice, or even be removed.
14//
15// We mean it.
16//
17
18#include <QtQuickShapes/private/qquickshapesglobal_p.h>
19#include <QtQuickShapes/private/qquickshape_p_p.h>
20#include <QtQuick/private/qquadpath_p.h>
21#include <QtQuick/private/qsgcurveabstractnode_p.h>
22#include <QtQuick/private/qsggradientcache_p.h>
23#include <qsgnode.h>
24#include <qsggeometry.h>
25#include <qsgmaterial.h>
26#include <qsgrendererinterface.h>
27#include <qsgtexture.h>
28#include <QtCore/qrunnable.h>
29#include <QRunnable>
30
31#include <QtGui/private/qtriangulator_p.h>
32#include <QtQuick/private/qsgcurvefillnode_p.h>
33
34QT_BEGIN_NAMESPACE
35
36class QQuickShapeCurveRunnable;
37
38class Q_QUICKSHAPES_EXPORT QQuickShapeCurveRenderer : public QQuickAbstractPathRenderer
39{
40public:
44 ~QQuickShapeCurveRenderer() override;
45
46 void beginSync(int totalCount, bool *countChanged) override;
47 void setPath(int index, const QQuickPath *path) override;
48 void setPath(int index, const QPainterPath &path, QQuickShapePath::PathHints pathHints = {});
49 void setStrokeColor(int index, const QColor &color) override;
50 void setStrokeWidth(int index, qreal w) override;
51 void setFillColor(int index, const QColor &color) override;
52 void setFillRule(int index, QQuickShapePath::FillRule fillRule) override;
53 void setJoinStyle(int index, QQuickShapePath::JoinStyle joinStyle, int miterLimit) override;
54 void setCapStyle(int index, QQuickShapePath::CapStyle capStyle) override;
55 void setStrokeStyle(int index, QQuickShapePath::StrokeStyle strokeStyle,
56 qreal dashOffset, const QVector<qreal> &dashPattern) override;
57 void setFillGradient(int index, QQuickShapeGradient *gradient) override;
58 void setFillTransform(int index, const QSGTransform &transform) override;
59 void endSync(bool async) override;
60 void setAsyncCallback(void (*)(void *), void *) override;
61 Flags flags() const override { return SupportsAsync; }
62
63 void updateNode() override;
64
65 void setRootNode(QSGNode *node);
66
67 using NodeList = QVector<QSGCurveAbstractNode *>;
68
69 enum DirtyFlag
70 {
71 PathDirty = 0x01,
72 FillDirty = 0x02,
73 StrokeDirty = 0x04,
74 UniformsDirty = 0x08
75 };
76
77 enum DebugVisualizationOption {
78 NoDebug = 0,
79 DebugCurves = 0x01,
80 DebugWireframe = 0x02
81 };
82
83 static int debugVisualization();
84 static void setDebugVisualization(int options);
85
86private:
87 struct PathData {
88
89 bool isFillVisible() const { return fillColor.alpha() > 0 || gradientType != QGradient::NoGradient; }
90
91 bool isStrokeVisible() const
92 {
93 return validPenWidth && pen.color().alpha() > 0 && pen.style() != Qt::NoPen;
94 }
95
96 QGradient::Type gradientType = QGradient::NoGradient;
97 QSGGradientCache::GradientDesc gradient;
98 QSGTransform fillTransform;
99 QColor fillColor;
100 Qt::FillRule fillRule = Qt::OddEvenFill;
101 QPen pen;
102 bool validPenWidth = true;
103 int m_dirty = 0;
104 QQuickShapePath::PathHints pathHints;
105
106 QPainterPath originalPath;
107 QQuadPath path;
108 QQuadPath fillPath;
109 QQuadPath strokePath;
110
111 NodeList fillNodes;
112 NodeList strokeNodes;
113
114 QQuickShapeCurveRunnable *currentRunner = nullptr;
115 };
116
117 void createRunner(PathData *pathData);
118 void maybeUpdateAsyncItem();
119
120 static void processPath(PathData *pathData);
121 static NodeList addFillNodes(const PathData &pathData);
122 static NodeList addTriangulatingStrokerNodes(const PathData &pathData);
123 static NodeList addCurveStrokeNodes(const PathData &pathData);
124
125 void solveIntersections(QQuadPath &path);
126 QQuickItem *m_item;
127 QSGNode *m_rootNode = nullptr;
128 QVector<PathData> m_paths;
129 void (*m_asyncCallback)(void *) = nullptr;
130 void *m_asyncCallbackData = nullptr;
131 static int debugVisualizationFlags;
132
133 friend class QQuickShapeCurveRunnable;
134};
135
136class QQuickShapeCurveRunnable : public QObject, public QRunnable
137{
138 Q_OBJECT
139
140public:
141 void run() override;
142
143 bool isAsync = false;
144 bool isDone = false;
145 bool orphaned = false;
146
147 // input / output
148 QQuickShapeCurveRenderer::PathData pathData;
149
150Q_SIGNALS:
151 void done(QQuickShapeCurveRunnable *self);
152};
153
154QT_END_NAMESPACE
155
156#endif // QQUICKSHAPECURVERENDERER_P_H
QColor
The QColor class provides colors based on RGB, HSV or CMYK values.
Definition qcolor.h:31
QGradient::Type
Type
Specifies the type of gradient.
Definition qbrush.h:138
QGradient::NoGradient
@ NoGradient
Definition qbrush.h:142
QObject
\inmodule QtCore
Definition qobject.h:103
QPainterPath
\inmodule QtGui
Definition qpainterpath.h:29
QPen
\inmodule QtGui
Definition qpen.h:28
QQuickItem
The QQuickItem class provides the most basic of all visual items in \l {Qt Quick}.
Definition qquickitem.h:63
QQuickShapeCurveRenderer::NodeList
QVector< QSGCurveAbstractNode * > NodeList
Definition qquickshapecurverenderer_p.h:67
QQuickShapeCurveRunnable::pathData
QQuickShapeCurveRenderer::PathData pathData
Definition qquickshapecurverenderer_p.h:148
QQuickShapeCurveRunnable::done
void done(QQuickShapeCurveRunnable *self)
QQuickShapeCurveRunnable::run
void run() override
Implement this pure virtual function in your subclass.
Definition qquickshapecurverenderer.cpp:355
QRunnable
\inmodule QtCore
Definition qrunnable.h:18
QSGNode
\group qtquick-scenegraph-nodes \title Qt Quick Scene Graph Node classes
Definition qsgnode.h:37
QT_BEGIN_NAMESPACE
Combined button and popup list for selecting options.
Definition qstandardpaths_haiku.cpp:21
QT_END_NAMESPACE
Definition qsharedpointer.cpp:1590
Qt::NoPen
@ NoPen
Definition qnamespace.h:1091
Qt::OddEvenFill
@ OddEvenFill
Definition qnamespace.h:1300
icutils::NodeList
std::vector< Node > NodeList
Definition inlinecomponentutils_p.h:59
void
DBusConnection const char DBusError DBusBusType DBusError return DBusConnection DBusHandleMessageFunction void DBusFreeFunction return DBusConnection return DBusConnection return const char DBusError return DBusConnection DBusMessage dbus_uint32_t return DBusConnection dbus_bool_t DBusConnection DBusAddWatchFunction DBusRemoveWatchFunction DBusWatchToggledFunction void DBusFreeFunction return DBusConnection DBusDispatchStatusFunction void DBusFreeFunction DBusTimeout return DBusTimeout return DBusWatch return DBusWatch unsigned int return DBusError const DBusError return const DBusMessage return DBusMessage return DBusMessage return DBusMessage return DBusMessage return DBusMessage return DBusMessageIter int const void return DBusMessageIter DBusMessageIter return DBusMessageIter void DBusMessageIter void int return DBusMessage DBusMessageIter return DBusMessageIter return DBusMessageIter DBusMessageIter const char const char const char const char return DBusMessage return DBusMessage const char return DBusMessage dbus_bool_t return DBusMessage dbus_uint32_t return DBusMessage void
Definition qdbus_symbols_p.h:409
Flags
Flags
Definition qfontsubset.cpp:650
w
GLfloat GLfloat GLfloat w
[0]
Definition qopengles2ext.h:789
index
GLuint index
[2]
Definition qopengles2ext.h:331
color
GLuint color
[2]
Definition qopengles2ext.h:1140
transform
GLuint GLenum GLenum transform
Definition qopenglext.h:11564
path
GLsizei const GLchar *const * path
Definition qopenglext.h:4283
setCapStyle
static void setCapStyle(int cap_style, GC gc)
Definition qpaintengine_x11.cpp:1070
Q_OBJECT
#define Q_OBJECT
Definition qtmetamacros.h:119
Q_SIGNALS
#define Q_SIGNALS
Definition qtmetamacros.h:45
qreal
double qreal
Definition qtypes.h:187
item
QGraphicsItem * item
Definition src_gui_graphicsview_qgraphicsitem.cpp:107