src/gui/painting/qvectorpath_p.h
changeset 0 1918ee327afb
child 3 41300fa6a67c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/painting/qvectorpath_p.h	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,167 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QVECTORPATH_P_H
+#define QVECTORPATH_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 <QtGui/qpaintengine.h>
+
+#include <private/qpaintengine_p.h>
+#include <private/qstroker_p.h>
+#include <private/qpainter_p.h>
+
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+
+#define QVECTORPATH_NO_CACHE
+
+struct QRealRect {
+    qreal x1, y1, x2, y2;
+};
+
+class Q_GUI_EXPORT QVectorPath
+{
+public:
+    enum Hint {
+        // Basic shapes...
+        LinesHint               = 0x0001, // Just plain lines...
+        RectangleHint           = 0x0002,
+        ConvexPolygonHint       = 0x0003, // Convex polygon...
+        NonISectPolygonHint     = 0x0004, // concave polygon, but not intersecting..
+        NonCurvedShapeHint      = 0x0005, // Generic polygon, possibly self-intersecting...
+        CurvedShapeHint         = 0x0006, // Generic vector path..
+        EllipseHint             = 0x0007,
+        ShapeHintMask           = 0x000f,
+
+        // Other hints
+        CacheHint               = 0x0100,
+        ControlPointRect        = 0x0200, // Set if the control point rect has been calculated...
+
+        // Shape rendering specifiers...
+        OddEvenFill             = 0x1000,
+        WindingFill             = 0x2000,
+        ImplicitClose           = 0x4000
+    };
+
+    // ### Falcon: introduca a struct XY for points so lars is not so confused...
+    QVectorPath(const qreal *points,
+                int count,
+                const QPainterPath::ElementType *elements = 0,
+                uint hints = CurvedShapeHint)
+        : m_elements(elements),
+          m_points(points),
+          m_count(count),
+          m_hints(hints)
+#ifndef QVECTORPATH_NO_CACHE
+        , m_cache(0)
+#endif
+    {
+    }
+
+    QRectF controlPointRect() const;
+
+    inline Hint shape() const { return (Hint) (m_hints & ShapeHintMask); }
+
+    inline bool hasCacheHint() const { return m_hints & CacheHint; }
+    inline bool hasImplicitClose() const { return m_hints & ImplicitClose; }
+    inline bool hasWindingFill() const { return m_hints & WindingFill; }
+
+    inline uint hints() const { return m_hints; }
+
+    inline const QPainterPath::ElementType *elements() const { return m_elements; }
+    inline const qreal *points() const { return m_points; }
+    inline bool isEmpty() const { return m_points == 0; }
+
+    inline int elementCount() const { return m_count; }
+    inline const QPainterPath convertToPainterPath() const;
+
+    static inline uint polygonFlags(QPaintEngine::PolygonDrawMode mode);
+
+private:
+    Q_DISABLE_COPY(QVectorPath)
+
+#ifndef QVECTORPATH_NO_CACHE
+    struct CacheEntry {
+        void *engine;
+        int id;
+        void *extra;
+        CacheEntry *next;
+    };
+
+    void addCacheData(CacheEntry *d) {
+        d->next = m_cache;
+        m_cache = d;
+    }
+
+    CacheEntry *m_cache;
+#endif
+
+    const QPainterPath::ElementType *m_elements;
+    const qreal *m_points;
+    const int m_count;
+
+    mutable uint m_hints;
+    mutable QRealRect m_cp_rect;
+};
+
+Q_GUI_EXPORT const QVectorPath &qtVectorPathForPath(const QPainterPath &path);
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif