--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/painting/qoutlinemapper_p.h Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,238 @@
+/****************************************************************************
+**
+** 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 QOUTLINEMAPPER_P_H
+#define QOUTLINEMAPPER_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 <QtCore/qrect.h>
+
+#include <QtGui/qtransform.h>
+#include <QtGui/qpainterpath.h>
+
+#define QT_FT_BEGIN_HEADER
+#define QT_FT_END_HEADER
+
+#include <private/qrasterdefs_p.h>
+#include <private/qdatabuffer_p.h>
+#include "qpaintengineex_p.h"
+
+QT_BEGIN_NAMESPACE
+
+// This limitations comes from qgrayraster.c. Any higher and
+// rasterization of shapes will produce incorrect results.
+const int QT_RASTER_COORD_LIMIT = 32767;
+
+//#define QT_DEBUG_CONVERT
+
+/********************************************************************************
+ * class QOutlineMapper
+ *
+ * Used to map between QPainterPath and the QT_FT_Outline structure used by the
+ * freetype scanconvertor.
+ *
+ * The outline mapper uses a path iterator to get points from the path,
+ * so that it is possible to transform the points as they are converted. The
+ * callback can be a noop, translate or full-fledged xform. (Tests indicated
+ * that using a C callback was low cost).
+ */
+class QOutlineMapper
+{
+public:
+ QOutlineMapper()
+ : m_round_coords(false)
+ {
+ }
+
+ /*!
+ Sets up the matrix to be used for conversion. This also
+ sets up the qt_path_iterator function that is used as a callback
+ to get points.
+ */
+ void setMatrix(const QTransform &m)
+ {
+ m_m11 = m.m11();
+ m_m12 = m.m12();
+ m_m13 = m.m13();
+ m_m21 = m.m21();
+ m_m22 = m.m22();
+ m_m23 = m.m23();
+ m_m33 = m.m33();
+ m_dx = m.dx();
+ m_dy = m.dy();
+ m_txop = m.type();
+ }
+
+ void beginOutline(Qt::FillRule fillRule)
+ {
+#ifdef QT_DEBUG_CONVERT
+ printf("QOutlineMapper::beginOutline rule=%d\n", fillRule);
+#endif
+ m_valid = true;
+ m_elements.reset();
+ m_elements_dev.reset();
+ m_element_types.reset();
+ m_points.reset();
+ m_tags.reset();
+ m_contours.reset();
+ m_outline.flags = fillRule == Qt::WindingFill
+ ? QT_FT_OUTLINE_NONE
+ : QT_FT_OUTLINE_EVEN_ODD_FILL;
+ m_subpath_start = 0;
+ }
+
+ void endOutline();
+
+ void clipElements(const QPointF *points, const QPainterPath::ElementType *types, int count);
+
+ void convertElements(const QPointF *points, const QPainterPath::ElementType *types, int count);
+
+ inline void moveTo(const QPointF &pt) {
+#ifdef QT_DEBUG_CONVERT
+ printf("QOutlineMapper::moveTo() (%f, %f)\n", pt.x(), pt.y());
+#endif
+ closeSubpath();
+ m_subpath_start = m_elements.size();
+ m_elements << pt;
+ m_element_types << QPainterPath::MoveToElement;
+ }
+
+ inline void lineTo(const QPointF &pt) {
+#ifdef QT_DEBUG_CONVERT
+ printf("QOutlineMapper::lineTo() (%f, %f)\n", pt.x(), pt.y());
+#endif
+ m_elements.add(pt);
+ m_element_types << QPainterPath::LineToElement;
+ }
+
+ inline void curveTo(const QPointF &cp1, const QPointF &cp2, const QPointF &ep) {
+#ifdef QT_DEBUG_CONVERT
+ printf("QOutlineMapper::curveTo() (%f, %f)\n", ep.x(), ep.y());
+#endif
+ m_elements << cp1 << cp2 << ep;
+ m_element_types << QPainterPath::CurveToElement
+ << QPainterPath::CurveToDataElement
+ << QPainterPath::CurveToDataElement;
+ }
+
+ inline void closeSubpath() {
+ int element_count = m_elements.size();
+ if (element_count > 0) {
+ if (m_elements.at(element_count-1) != m_elements.at(m_subpath_start)) {
+#ifdef QT_DEBUG_CONVERT
+ printf(" - implicitly closing\n");
+#endif
+ // Put the object on the stack to avoid the odd case where
+ // lineTo reallocs the databuffer and the QPointF & will
+ // be invalidated.
+ QPointF pt = m_elements.at(m_subpath_start);
+
+ // only do lineTo if we have element_type array...
+ if (m_element_types.size())
+ lineTo(pt);
+ else
+ m_elements << pt;
+
+ }
+ }
+ }
+
+ QT_FT_Outline *outline() {
+ if (m_valid)
+ return &m_outline;
+ return 0;
+ }
+
+ QT_FT_Outline *convertPath(const QPainterPath &path);
+ QT_FT_Outline *convertPath(const QVectorPath &path);
+
+ void setCoordinateRounding(bool coordinateRounding) { m_round_coords = coordinateRounding; }
+
+ inline QPainterPath::ElementType *elementTypes() const { return m_element_types.size() == 0 ? 0 : m_element_types.data(); }
+
+public:
+ QDataBuffer<QPainterPath::ElementType> m_element_types;
+ QDataBuffer<QPointF> m_elements;
+ QDataBuffer<QPointF> m_elements_dev;
+ QDataBuffer<QT_FT_Vector> m_points;
+ QDataBuffer<char> m_tags;
+ QDataBuffer<int> m_contours;
+
+ QRect m_clip_rect;
+ QDataBuffer<QPointF> m_polygon_dev;
+
+ QRectF controlPointRect; // only valid after endOutline()
+
+ QT_FT_Outline m_outline;
+ uint m_txop;
+
+ int m_subpath_start;
+
+ // Matrix
+ qreal m_m11;
+ qreal m_m12;
+ qreal m_m13;
+ qreal m_m21;
+ qreal m_m22;
+ qreal m_m23;
+ qreal m_m33;
+ qreal m_dx;
+ qreal m_dy;
+
+ bool m_valid;
+
+private:
+ bool m_round_coords;
+};
+
+QT_END_NAMESPACE
+
+#endif // QOUTLINEMAPPER_P_H