Merge branch 'wip/scenegraphng' into dev

Say hello to Shape.

Change-Id: I1093feee4acc375e62bae1d351db0a7969a536d0

1 files changed, 303 insertions, 0 deletions

diff --git a/src/imports/shapes/qquickshapegenericrenderer_p.h b/src/imports/shapes/qquickshapegenericrenderer_p.h
new file mode 100644
index 0000000000..ba50f50309
--- /dev/null
+++ b/src/imports/shapes/qquickshapegenericrenderer_p.h
@@ -0,0 +1,303 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtQuick module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QQUICKSHAPEGENERICRENDERER_P_H
+#define QQUICKSHAPEGENERICRENDERER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of a number of Qt sources files.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qquickshape_p_p.h"
+#include <qsgnode.h>
+#include <qsggeometry.h>
+#include <qsgmaterial.h>
+#include <qsgrendererinterface.h>
+#include <QtCore/qrunnable.h>
+
+QT_BEGIN_NAMESPACE
+
+class QQuickShapeGenericNode;
+class QQuickShapeGenericStrokeFillNode;
+class QQuickShapeFillRunnable;
+class QQuickShapeStrokeRunnable;
+
+class QQuickShapeGenericRenderer : public QQuickAbstractPathRenderer
+{
+public:
+    enum Dirty {
+        DirtyFillGeom = 0x01,
+        DirtyStrokeGeom = 0x02,
+        DirtyColor = 0x04,
+        DirtyFillGradient = 0x08,
+        DirtyList = 0x10 // only for accDirty
+    };
+
+    QQuickShapeGenericRenderer(QQuickItem *item)
+        : m_item(item),
+          m_api(QSGRendererInterface::Unknown),
+          m_rootNode(nullptr),
+          m_accDirty(0),
+          m_asyncCallback(nullptr)
+    { }
+    ~QQuickShapeGenericRenderer();
+
+    void beginSync(int totalCount) override;
+    void setPath(int index, const QQuickPath *path) override;
+    void setJSPath(int index, const QQuickShapePathCommands &path) override;
+    void setStrokeColor(int index, const QColor &color) override;
+    void setStrokeWidth(int index, qreal w) override;
+    void setFillColor(int index, const QColor &color) override;
+    void setFillRule(int index, QQuickShapePath::FillRule fillRule) override;
+    void setJoinStyle(int index, QQuickShapePath::JoinStyle joinStyle, int miterLimit) override;
+    void setCapStyle(int index, QQuickShapePath::CapStyle capStyle) override;
+    void setStrokeStyle(int index, QQuickShapePath::StrokeStyle strokeStyle,
+                        qreal dashOffset, const QVector<qreal> &dashPattern) override;
+    void setFillGradient(int index, QQuickShapeGradient *gradient) override;
+    void endSync(bool async) override;
+    void setAsyncCallback(void (*)(void *), void *) override;
+    Flags flags() const override { return SupportsAsync; }
+
+    void updateNode() override;
+
+    void setRootNode(QQuickShapeGenericNode *node);
+
+    struct Color4ub { unsigned char r, g, b, a; };
+    typedef QVector<QSGGeometry::ColoredPoint2D> VertexContainerType;
+    typedef QVector<quint32> IndexContainerType;
+
+    static void triangulateFill(const QPainterPath &path,
+                                const Color4ub &fillColor,
+                                VertexContainerType *fillVertices,
+                                IndexContainerType *fillIndices,
+                                QSGGeometry::Type *indexType,
+                                bool supportsElementIndexUint);
+    static void triangulateStroke(const QPainterPath &path,
+                                  const QPen &pen,
+                                  const Color4ub &strokeColor,
+                                  VertexContainerType *strokeVertices,
+                                  const QSize &clipSize);
+
+private:
+    void maybeUpdateAsyncItem();
+
+    struct ShapePathData {
+        float strokeWidth;
+        QPen pen;
+        Color4ub strokeColor;
+        Color4ub fillColor;
+        Qt::FillRule fillRule;
+        QPainterPath path;
+        bool fillGradientActive;
+        QQuickShapeGradientCache::GradientDesc fillGradient;
+        VertexContainerType fillVertices;
+        IndexContainerType fillIndices;
+        QSGGeometry::Type indexType;
+        VertexContainerType strokeVertices;
+        int syncDirty;
+        int effectiveDirty = 0;
+        QQuickShapeFillRunnable *pendingFill = nullptr;
+        QQuickShapeStrokeRunnable *pendingStroke = nullptr;
+    };
+
+    void updateShadowDataInNode(ShapePathData *d, QQuickShapeGenericStrokeFillNode *n);
+    void updateFillNode(ShapePathData *d, QQuickShapeGenericNode *node);
+    void updateStrokeNode(ShapePathData *d, QQuickShapeGenericNode *node);
+
+    QQuickItem *m_item;
+    QSGRendererInterface::GraphicsApi m_api;
+    QQuickShapeGenericNode *m_rootNode;
+    QVector<ShapePathData> m_sp;
+    int m_accDirty;
+    void (*m_asyncCallback)(void *);
+    void *m_asyncCallbackData;
+};
+
+class QQuickShapeFillRunnable : public QObject, public QRunnable
+{
+    Q_OBJECT
+
+public:
+    void run() override;
+
+    bool orphaned = false;
+
+    // input
+    QPainterPath path;
+    QQuickShapeGenericRenderer::Color4ub fillColor;
+    bool supportsElementIndexUint;
+
+    // output
+    QQuickShapeGenericRenderer::VertexContainerType fillVertices;
+    QQuickShapeGenericRenderer::IndexContainerType fillIndices;
+    QSGGeometry::Type indexType;
+
+Q_SIGNALS:
+    void done(QQuickShapeFillRunnable *self);
+};
+
+class QQuickShapeStrokeRunnable : public QObject, public QRunnable
+{
+    Q_OBJECT
+
+public:
+    void run() override;
+
+    bool orphaned = false;
+
+    // input
+    QPainterPath path;
+    QPen pen;
+    QQuickShapeGenericRenderer::Color4ub strokeColor;
+    QSize clipSize;
+
+    // output
+    QQuickShapeGenericRenderer::VertexContainerType strokeVertices;
+
+Q_SIGNALS:
+    void done(QQuickShapeStrokeRunnable *self);
+};
+
+class QQuickShapeGenericStrokeFillNode : public QSGGeometryNode
+{
+public:
+    QQuickShapeGenericStrokeFillNode(QQuickWindow *window);
+    ~QQuickShapeGenericStrokeFillNode();
+
+    enum Material {
+        MatSolidColor,
+        MatLinearGradient
+    };
+
+    void activateMaterial(Material m);
+
+    QQuickWindow *window() const { return m_window; }
+
+    // shadow data for custom materials
+    QQuickShapeGradientCache::GradientDesc m_fillGradient;
+
+private:
+    QSGGeometry *m_geometry;
+    QQuickWindow *m_window;
+    QSGMaterial *m_material;
+    QScopedPointer<QSGMaterial> m_solidColorMaterial;
+    QScopedPointer<QSGMaterial> m_linearGradientMaterial;
+
+    friend class QQuickShapeGenericRenderer;
+};
+
+class QQuickShapeGenericNode : public QSGNode
+{
+public:
+    QQuickShapeGenericStrokeFillNode *m_fillNode = nullptr;
+    QQuickShapeGenericStrokeFillNode *m_strokeNode = nullptr;
+    QQuickShapeGenericNode *m_next = nullptr;
+};
+
+class QQuickShapeGenericMaterialFactory
+{
+public:
+    static QSGMaterial *createVertexColor(QQuickWindow *window);
+    static QSGMaterial *createLinearGradient(QQuickWindow *window, QQuickShapeGenericStrokeFillNode *node);
+};
+
+#ifndef QT_NO_OPENGL
+
+class QQuickShapeLinearGradientShader : public QSGMaterialShader
+{
+public:
+    QQuickShapeLinearGradientShader();
+
+    void initialize() override;
+    void updateState(const RenderState &state, QSGMaterial *newEffect, QSGMaterial *oldEffect) override;
+    char const *const *attributeNames() const override;
+
+    static QSGMaterialType type;
+
+private:
+    int m_opacityLoc;
+    int m_matrixLoc;
+    int m_gradStartLoc;
+    int m_gradEndLoc;
+};
+
+class QQuickShapeLinearGradientMaterial : public QSGMaterial
+{
+public:
+    QQuickShapeLinearGradientMaterial(QQuickShapeGenericStrokeFillNode *node)
+        : m_node(node)
+    {
+        // Passing RequiresFullMatrix is essential in order to prevent the
+        // batch renderer from baking in simple, translate-only transforms into
+        // the vertex data. The shader will rely on the fact that
+        // vertexCoord.xy is the Shape-space coordinate and so no modifications
+        // are welcome.
+        setFlag(Blending | RequiresFullMatrix);
+    }
+
+    QSGMaterialType *type() const override
+    {
+        return &QQuickShapeLinearGradientShader::type;
+    }
+
+    int compare(const QSGMaterial *other) const override;
+
+    QSGMaterialShader *createShader() const override
+    {
+        return new QQuickShapeLinearGradientShader;
+    }
+
+    QQuickShapeGenericStrokeFillNode *node() const { return m_node; }
+
+private:
+    QQuickShapeGenericStrokeFillNode *m_node;
+};
+
+#endif // QT_NO_OPENGL
+
+QT_END_NAMESPACE
+
+#endif // QQUICKSHAPEGENERICRENDERER_P_H