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Diffstat (limited to 'src/quick/items/qquickpathitemgenericrenderer_p.h')
| -rw-r--r-- | src/quick/items/qquickpathitemgenericrenderer_p.h | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/src/quick/items/qquickpathitemgenericrenderer_p.h b/src/quick/items/qquickpathitemgenericrenderer_p.h new file mode 100644 index 0000000000..c186959c88 --- /dev/null +++ b/src/quick/items/qquickpathitemgenericrenderer_p.h @@ -0,0 +1,232 @@ +/**************************************************************************** +** +** 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 QQUICKPATHITEMGENERICRENDERER_P_H +#define QQUICKPATHITEMGENERICRENDERER_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 "qquickpathitem_p_p.h" +#include <qsgnode.h> +#include <qsggeometry.h> +#include <qsgmaterial.h> +#include <QtGui/private/qtriangulatingstroker_p.h> + +QT_BEGIN_NAMESPACE + +class QQuickPathItemGenericRootRenderNode; + +class QQuickPathItemGenericRenderer : public QQuickAbstractPathRenderer +{ +public: + enum Dirty { + DirtyGeom = 0x01, + DirtyColor = 0x02, + DirtyFillGradient = 0x04, + + DirtyAll = 0xFF + }; + + QQuickPathItemGenericRenderer(QQuickItem *item) + : m_item(item), + m_rootNode(nullptr), + m_effectiveDirty(0) + { } + + void beginSync() override; + void setPath(const QQuickPath *path) override; + void setStrokeColor(const QColor &color) override; + void setStrokeWidth(qreal w) override; + void setFillColor(const QColor &color) override; + void setFillRule(QQuickPathItem::FillRule fillRule) override; + void setJoinStyle(QQuickPathItem::JoinStyle joinStyle, int miterLimit) override; + void setCapStyle(QQuickPathItem::CapStyle capStyle) override; + void setStrokeStyle(QQuickPathItem::StrokeStyle strokeStyle, + qreal dashOffset, const QVector<qreal> &dashPattern) override; + void setFillGradient(QQuickPathGradient *gradient) override; + void endSync() override; + void updatePathRenderNode() override; + + void setRootNode(QQuickPathItemGenericRootRenderNode *rn); + + struct Color4ub { unsigned char r, g, b, a; }; + +private: + void triangulateFill(); + void triangulateStroke(); + void updateFillNode(); + void updateStrokeNode(); + + QQuickItem *m_item; + QQuickPathItemGenericRootRenderNode *m_rootNode; + QTriangulatingStroker m_stroker; + QDashedStrokeProcessor m_dashStroker; + + QPen m_pen; + Color4ub m_strokeColor; + Color4ub m_fillColor; + Qt::FillRule m_fillRule; + QPainterPath m_path; + bool m_fillGradientActive; + QQuickPathItemGradientCache::GradientDesc m_fillGradient; + + QVector<QSGGeometry::ColoredPoint2D> m_fillVertices; + QVector<quint16> m_fillIndices; + QVector<QSGGeometry::ColoredPoint2D> m_strokeVertices; + + int m_syncDirty; + int m_effectiveDirty; +}; + +class QQuickPathItemGenericRenderNode : public QSGGeometryNode +{ +public: + QQuickPathItemGenericRenderNode(QQuickWindow *window, QQuickPathItemGenericRootRenderNode *rootNode); + ~QQuickPathItemGenericRenderNode(); + + enum Material { + MatSolidColor, + MatLinearGradient + }; + + void activateMaterial(Material m); + + QQuickWindow *window() const { return m_window; } + QQuickPathItemGenericRootRenderNode *rootNode() const { return m_rootNode; } + + // shadow data for custom materials + QQuickPathItemGradientCache::GradientDesc m_fillGradient; + +private: + QSGGeometry m_geometry; + QQuickWindow *m_window; + QQuickPathItemGenericRootRenderNode *m_rootNode; + QSGMaterial *m_material; + QScopedPointer<QSGMaterial> m_solidColorMaterial; + QScopedPointer<QSGMaterial> m_linearGradientMaterial; + + friend class QQuickPathItemGenericRenderer; +}; + +class QQuickPathItemGenericRootRenderNode : public QSGNode +{ +public: + QQuickPathItemGenericRootRenderNode(QQuickWindow *window, bool hasFill, bool hasStroke); + ~QQuickPathItemGenericRootRenderNode(); + +private: + QQuickPathItemGenericRenderNode *m_fillNode; + QQuickPathItemGenericRenderNode *m_strokeNode; + + friend class QQuickPathItemGenericRenderer; +}; + +class QQuickPathItemGenericMaterialFactory +{ +public: + static QSGMaterial *createVertexColor(QQuickWindow *window); + static QSGMaterial *createLinearGradient(QQuickWindow *window, QQuickPathItemGenericRenderNode *node); +}; + +#ifndef QT_NO_OPENGL + +class QQuickPathItemLinearGradientShader : public QSGMaterialShader +{ +public: + QQuickPathItemLinearGradientShader(); + + 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 QQuickPathItemLinearGradientMaterial : public QSGMaterial +{ +public: + QQuickPathItemLinearGradientMaterial(QQuickPathItemGenericRenderNode *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 PathItem-space coordinate and so no modifications + // are welcome. + setFlag(Blending | RequiresFullMatrix); + } + + QSGMaterialType *type() const override + { + return &QQuickPathItemLinearGradientShader::type; + } + + int compare(const QSGMaterial *other) const override; + + QSGMaterialShader *createShader() const override + { + return new QQuickPathItemLinearGradientShader; + } + + QQuickPathItemGenericRenderNode *node() const { return m_node; } + +private: + QQuickPathItemGenericRenderNode *m_node; +}; + +#endif // QT_NO_OPENGL + +QT_END_NAMESPACE + +#endif // QQUICKPATHITEMGENERICRENDERER_P_H |