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| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
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| ** |
| ** This file is part of the QtQuick module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
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| ****************************************************************************/ |
| |
| #ifndef QQUICKCONTEXT2D_P_H |
| #define QQUICKCONTEXT2D_P_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include <private/qtquickglobal_p.h> |
| |
| QT_REQUIRE_CONFIG(quick_canvas); |
| |
| #include <QtQml/qqml.h> |
| #include <QtQml/qqmlcomponent.h> |
| #include <private/qquickcanvascontext_p.h> |
| #include <private/qquickcanvasitem_p.h> |
| #include <QtGui/qpainter.h> |
| #include <QtGui/qpainterpath.h> |
| #include <QtGui/qoffscreensurface.h> |
| #include <QtCore/qstring.h> |
| #include <QtCore/qstack.h> |
| #include <QtCore/qqueue.h> |
| #include <QtCore/QWaitCondition> |
| |
| #include <private/qv4value_p.h> |
| #include <private/qv4persistent_p.h> |
| |
| //#define QQUICKCONTEXT2D_DEBUG //enable this for just DEBUG purpose! |
| |
| #ifdef QQUICKCONTEXT2D_DEBUG |
| #include <QElapsedTimer> |
| #endif |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QQuickContext2DCommandBuffer; |
| class QQuickContext2DTexture; |
| class QQuickPixmap; |
| class QSGTexture; |
| class QSurface; |
| class QOpenGLContext; |
| |
| class QQuickContext2D : public QQuickCanvasContext |
| { |
| Q_OBJECT |
| |
| public: |
| Q_DISABLE_COPY(QQuickContext2D) |
| |
| enum TextBaseLineType { Alphabetic=0, Top, Middle, Bottom, Hanging}; |
| enum TextAlignType { Start=0, End, Left, Right, Center}; |
| enum PaintCommand { |
| Invalid = 0, |
| UpdateMatrix, |
| ClearRect, |
| FillRect, |
| StrokeRect, |
| Fill, |
| Stroke, |
| Clip, |
| UpdateBrush, |
| GlobalAlpha, |
| GlobalCompositeOperation, |
| StrokeStyle, |
| FillStyle, |
| LineWidth, |
| LineCap, |
| LineJoin, |
| LineDash, |
| LineDashOffset, |
| MiterLimit, |
| ShadowOffsetX, |
| ShadowOffsetY, |
| ShadowBlur, |
| ShadowColor, |
| Font, |
| TextBaseline, |
| TextAlign, |
| FillText, |
| StrokeText, |
| DrawImage, |
| DrawPixmap, |
| GetImageData |
| }; |
| |
| struct State { |
| State() |
| : strokeStyle(QColor(Qt::black)) |
| , fillStyle(QColor(Qt::black)) |
| , fillPatternRepeatX(false) |
| , fillPatternRepeatY(false) |
| , strokePatternRepeatX(false) |
| , strokePatternRepeatY(false) |
| , invertibleCTM(true) |
| , clip(false) |
| , fillRule(Qt::WindingFill) |
| , globalAlpha(1.0) |
| , lineWidth(1) |
| , lineCap(Qt::FlatCap) |
| , lineJoin(Qt::MiterJoin) |
| , lineDashOffset(0) |
| , miterLimit(10) |
| , shadowOffsetX(0) |
| , shadowOffsetY(0) |
| , shadowBlur(0) |
| , shadowColor(qRgba(0, 0, 0, 0)) |
| , globalCompositeOperation(QPainter::CompositionMode_SourceOver) |
| , font(QFont(QLatin1String("sans-serif"))) |
| , textAlign(QQuickContext2D::Start) |
| , textBaseline(QQuickContext2D::Alphabetic) |
| { |
| font.setPixelSize(10); |
| } |
| |
| QTransform matrix; |
| QPainterPath clipPath; |
| QBrush strokeStyle; |
| QBrush fillStyle; |
| bool fillPatternRepeatX:1; |
| bool fillPatternRepeatY:1; |
| bool strokePatternRepeatX:1; |
| bool strokePatternRepeatY:1; |
| bool invertibleCTM:1; |
| bool clip:1; |
| Qt::FillRule fillRule; |
| qreal globalAlpha; |
| qreal lineWidth; |
| Qt::PenCapStyle lineCap; |
| Qt::PenJoinStyle lineJoin; |
| QVector<qreal> lineDash; |
| qreal lineDashOffset; |
| qreal miterLimit; |
| qreal shadowOffsetX; |
| qreal shadowOffsetY; |
| qreal shadowBlur; |
| QColor shadowColor; |
| QPainter::CompositionMode globalCompositeOperation; |
| QFont font; |
| QQuickContext2D::TextAlignType textAlign; |
| QQuickContext2D::TextBaseLineType textBaseline; |
| }; |
| |
| QQuickContext2D(QObject *parent = nullptr); |
| ~QQuickContext2D(); |
| |
| QStringList contextNames() const override; |
| void init(QQuickCanvasItem *canvasItem, const QVariantMap &args) override; |
| void prepare(const QSize& canvasSize, const QSize& tileSize, const QRect& canvasWindow, const QRect& dirtyRect, bool smooth, bool antialiasing) override; |
| void flush() override; |
| void sync(); |
| QThread *thread() const { return m_thread; } |
| QQuickContext2DTexture *texture() const; |
| QImage toImage(const QRectF& bounds) override; |
| |
| QV4::ReturnedValue v4value() const override; |
| QV4::ExecutionEngine *v4Engine() const override; |
| void setV4Engine(QV4::ExecutionEngine *eng) override; |
| |
| QQuickCanvasItem* canvas() const { return m_canvas; } |
| QQuickContext2DCommandBuffer* buffer() const { return m_buffer; } |
| |
| bool bufferValid() const { return m_buffer != nullptr; } |
| void popState(); |
| void pushState(); |
| void reset(); |
| |
| void fill(); |
| void clip(); |
| void stroke(); |
| void fillRect(qreal x, qreal y, qreal w, qreal h); |
| void strokeRect(qreal x, qreal y, qreal w, qreal h); |
| void clearRect(qreal x, qreal y, qreal w, qreal h); |
| void drawText(const QString& text, qreal x, qreal y, bool fill); |
| |
| //Transform APIs |
| void scale(qreal x, qreal y); |
| void rotate(qreal angle); |
| void shear(qreal h, qreal v); |
| void translate(qreal x, qreal y); |
| void transform(qreal a, qreal b, qreal c, qreal d, qreal e, qreal f); |
| void setTransform(qreal a, qreal b, qreal c, qreal d, qreal e, qreal f); |
| |
| // Path APIs |
| void beginPath(); |
| void closePath(); |
| void moveTo(qreal x, qreal y); |
| void lineTo(qreal x, qreal y); |
| void quadraticCurveTo(qreal cpx, qreal cpy, qreal x, qreal y); |
| void bezierCurveTo(qreal cp1x, qreal cp1y, |
| qreal cp2x, qreal cp2y, qreal x, qreal y); |
| void arcTo(qreal x1, qreal y1, qreal x2, qreal y2, qreal radius); |
| void rect(qreal x, qreal y, qreal w, qreal h); |
| void roundedRect(qreal x, qreal y,qreal w, qreal h, qreal xr, qreal yr); |
| void ellipse(qreal x, qreal y,qreal w, qreal h); |
| void text(const QString& str, qreal x, qreal y); |
| void arc(qreal x, qreal y, qreal radius, |
| qreal startAngle, qreal endAngle, |
| bool anticlockwise); |
| void addArcTo(const QPointF& p1, const QPointF& p2, float radius); |
| |
| bool isPointInPath(qreal x, qreal y) const; |
| |
| QPainterPath createTextGlyphs(qreal x, qreal y, const QString& text); |
| QQmlRefPointer<QQuickCanvasPixmap> createPixmap(const QUrl& url); |
| |
| QOpenGLContext *glContext() const { return m_glContext; } |
| QSurface *surface() const { return m_surface.data(); } |
| void setGrabbedImage(const QImage& grab); |
| |
| State state; |
| QStack<QQuickContext2D::State> m_stateStack; |
| QQuickCanvasItem* m_canvas; |
| QQuickContext2DCommandBuffer* m_buffer; |
| QPainterPath m_path; |
| QV4::PersistentValue m_fillStyle; |
| QV4::PersistentValue m_strokeStyle; |
| QV4::PersistentValue m_v4path; |
| QV4::ExecutionEngine *m_v4engine; |
| QScopedPointer<QOffscreenSurface> m_surface; |
| QOpenGLContext *m_glContext; |
| QV4::PersistentValue m_v4value; |
| QQuickContext2DTexture *m_texture; |
| QQuickCanvasItem::RenderTarget m_renderTarget; |
| QQuickCanvasItem::RenderStrategy m_renderStrategy; |
| QQueue<QQuickContext2DCommandBuffer*> m_bufferQueue; |
| QThread *m_thread; |
| QImage m_grabbedImage; |
| bool m_grabbed:1; |
| |
| static QMutex mutex; |
| }; |
| |
| |
| QT_END_NAMESPACE |
| QML_DECLARE_TYPE(QQuickContext2D) |
| |
| #endif // QQUICKCONTEXT2D_P_H |
