Long live Qt 4.5!

1 files changed, 519 insertions, 0 deletions

diff --git a/src/gui/image/qpaintengine_pic.cpp b/src/gui/image/qpaintengine_pic.cpp
new file mode 100644
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--- /dev/null
+++ b/src/gui/image/qpaintengine_pic.cpp
@@ -0,0 +1,519 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "private/qpaintengine_p.h"
+#include "private/qpainter_p.h"
+#include "private/qpicture_p.h"
+#include "private/qfont_p.h"
+
+#ifndef QT_NO_PICTURE
+
+#include "qbuffer.h"
+#include "qbytearray.h"
+#include "qdatastream.h"
+#include "qmath.h"
+#include "qpaintengine_pic_p.h"
+#include "qpicture.h"
+#include "qpolygon.h"
+#include "qrect.h"
+#include <private/qtextengine_p.h>
+
+//#define QT_PICTURE_DEBUG
+#include <qdebug.h>
+
+
+QT_BEGIN_NAMESPACE
+
+class QPicturePaintEnginePrivate : public QPaintEnginePrivate
+{
+    Q_DECLARE_PUBLIC(QPicturePaintEngine)
+public:
+    QDataStream s;
+    QPainter *pt;
+    QPicturePrivate *pic_d;
+};
+
+QPicturePaintEngine::QPicturePaintEngine()
+    : QPaintEngine(*(new QPicturePaintEnginePrivate), AllFeatures)
+{
+    Q_D(QPicturePaintEngine);
+    d->pt = 0;
+}
+
+QPicturePaintEngine::QPicturePaintEngine(QPaintEnginePrivate &dptr)
+    : QPaintEngine(dptr, AllFeatures)
+{
+    Q_D(QPicturePaintEngine);
+    d->pt = 0;
+}
+
+QPicturePaintEngine::~QPicturePaintEngine()
+{
+}
+
+bool QPicturePaintEngine::begin(QPaintDevice *pd)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << "QPicturePaintEngine::begin()";
+#endif
+    Q_ASSERT(pd);
+    QPicture *pic = static_cast<QPicture *>(pd);
+
+    d->pdev = pd;
+    d->pic_d = pic->d_func();
+    Q_ASSERT(d->pic_d);
+
+    d->s.setDevice(&d->pic_d->pictb);
+    d->s.setVersion(d->pic_d->formatMajor);
+
+    d->pic_d->pictb.open(QIODevice::WriteOnly | QIODevice::Truncate);
+    d->s.writeRawData(qt_mfhdr_tag, 4);
+    d->s << (quint16) 0 << (quint16) d->pic_d->formatMajor << (quint16) d->pic_d->formatMinor;
+    d->s << (quint8) QPicturePrivate::PdcBegin << (quint8) sizeof(qint32);
+    d->pic_d->brect = QRect();
+    if (d->pic_d->formatMajor >= 4) {
+        QRect r = pic->boundingRect();
+        d->s << (qint32) r.left() << (qint32) r.top() << (qint32) r.width()
+             << (qint32) r.height();
+    }
+    d->pic_d->trecs = 0;
+    d->s << (quint32)d->pic_d->trecs; // total number of records
+    d->pic_d->formatOk = false;
+    setActive(true);
+    return true;
+}
+
+bool QPicturePaintEngine::end()
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << "QPicturePaintEngine::end()";
+#endif
+    d->pic_d->trecs++;
+    d->s << (quint8) QPicturePrivate::PdcEnd << (quint8) 0;
+    int cs_start = sizeof(quint32);                // pos of checksum word
+    int data_start = cs_start + sizeof(quint16);
+    int brect_start = data_start + 2*sizeof(qint16) + 2*sizeof(quint8);
+    int pos = d->pic_d->pictb.pos();
+    d->pic_d->pictb.seek(brect_start);
+    if (d->pic_d->formatMajor >= 4) { // bounding rectangle
+        QRect r = static_cast<QPicture *>(d->pdev)->boundingRect();
+        d->s << (qint32) r.left() << (qint32) r.top() << (qint32) r.width()
+             << (qint32) r.height();
+    }
+    d->s << (quint32) d->pic_d->trecs;                        // write number of records
+    d->pic_d->pictb.seek(cs_start);
+    QByteArray buf = d->pic_d->pictb.buffer();
+    quint16 cs = (quint16) qChecksum(buf.constData() + data_start, pos - data_start);
+    d->s << cs;                                // write checksum
+    d->pic_d->pictb.close();
+    setActive(false);
+    return true;
+}
+
+#define SERIALIZE_CMD(c) \
+    d->pic_d->trecs++; \
+    d->s << (quint8) c; \
+    d->s << (quint8) 0; \
+    pos = d->pic_d->pictb.pos()
+
+void QPicturePaintEngine::updatePen(const QPen &pen)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << " -> updatePen(): width:" << pen.width() << "style:"
+             << pen.style() << "color:" << pen.color();
+#endif
+    int pos;
+    SERIALIZE_CMD(QPicturePrivate::PdcSetPen);
+    if (d->pic_d->in_memory_only) {
+        int index = d->pic_d->pen_list.size();
+        d->pic_d->pen_list.append(pen);
+        d->s << index;
+    } else {
+        d->s << pen;
+    }
+    writeCmdLength(pos, QRect(), false);
+}
+
+void QPicturePaintEngine::updateCompositionMode(QPainter::CompositionMode cmode)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << " -> updateCompositionMode():" << cmode;
+#endif
+    int pos;
+    SERIALIZE_CMD(QPicturePrivate::PdcSetCompositionMode);
+    d->s << (qint32)cmode;
+    writeCmdLength(pos, QRectF(), false);
+}
+
+void QPicturePaintEngine::updateClipEnabled(bool enabled)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << " -> updateClipEnabled():" << enabled;
+#endif
+    int pos;
+    SERIALIZE_CMD(QPicturePrivate::PdcSetClipEnabled);
+    d->s << enabled;
+    writeCmdLength(pos, QRectF(), false);
+}
+
+void QPicturePaintEngine::updateOpacity(qreal opacity)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << " -> updateOpacity():" << opacity;
+#endif
+    int pos;
+    SERIALIZE_CMD(QPicturePrivate::PdcSetOpacity);
+    d->s << double(opacity);
+    writeCmdLength(pos, QRectF(), false);
+}
+
+void QPicturePaintEngine::updateBrush(const QBrush &brush)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << " -> updateBrush(): style:" << brush.style();
+#endif
+    int pos;
+    SERIALIZE_CMD(QPicturePrivate::PdcSetBrush);
+    if (d->pic_d->in_memory_only) {
+        int index = d->pic_d->brush_list.size();
+        d->pic_d->brush_list.append(brush);
+        d->s << index;
+    } else {
+        d->s << brush;
+    }
+    writeCmdLength(pos, QRect(), false);
+}
+
+void QPicturePaintEngine::updateBrushOrigin(const QPointF &p)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << " -> updateBrushOrigin(): " << p;
+#endif
+    int pos;
+    SERIALIZE_CMD(QPicturePrivate::PdcSetBrushOrigin);
+    d->s << p;
+    writeCmdLength(pos, QRect(), false);
+}
+
+void QPicturePaintEngine::updateFont(const QFont &font)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << " -> updateFont(): pt sz:" << font.pointSize();
+#endif
+    int pos;
+    SERIALIZE_CMD(QPicturePrivate::PdcSetFont);
+    QFont fnt = font;
+    d->s << fnt;
+    writeCmdLength(pos, QRectF(), false);
+}
+
+void QPicturePaintEngine::updateBackground(Qt::BGMode bgMode, const QBrush &bgBrush)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << " -> updateBackground(): mode:" << bgMode << "style:" << bgBrush.style();
+#endif
+    int pos;
+    SERIALIZE_CMD(QPicturePrivate::PdcSetBkColor);
+    d->s << bgBrush.color();
+    writeCmdLength(pos, QRect(), false);
+
+    SERIALIZE_CMD(QPicturePrivate::PdcSetBkMode);
+    d->s << (qint8) bgMode;
+    writeCmdLength(pos, QRectF(), false);
+}
+
+void QPicturePaintEngine::updateMatrix(const QTransform &matrix)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << " -> updateMatrix():" << matrix;
+#endif
+    int pos;
+    SERIALIZE_CMD(QPicturePrivate::PdcSetWMatrix);
+    d->s << matrix << (qint8) false;
+    writeCmdLength(pos, QRectF(), false);
+}
+
+void QPicturePaintEngine::updateClipRegion(const QRegion &region, Qt::ClipOperation op)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << " -> updateClipRegion(): op:" << op
+             << "bounding rect:" << region.boundingRect();
+#endif
+    int pos;
+    SERIALIZE_CMD(QPicturePrivate::PdcSetClipRegion);
+    d->s << region << qint8(op);
+    writeCmdLength(pos, QRectF(), false);
+}
+
+void QPicturePaintEngine::updateClipPath(const QPainterPath &path, Qt::ClipOperation op)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << " -> updateClipPath(): op:" << op
+             << "bounding rect:" << path.boundingRect();
+#endif
+    int pos;
+
+    SERIALIZE_CMD(QPicturePrivate::PdcSetClipPath);
+    d->s << path << qint8(op);
+    writeCmdLength(pos, QRectF(), false);
+}
+
+void QPicturePaintEngine::updateRenderHints(QPainter::RenderHints hints)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << " -> updateRenderHints(): " << hints;
+#endif
+    int pos;
+    SERIALIZE_CMD(QPicturePrivate::PdcSetRenderHint);
+    d->s << (quint32) hints;
+    writeCmdLength(pos, QRect(), false);
+}
+
+void QPicturePaintEngine::writeCmdLength(int pos, const QRectF &r, bool corr)
+{
+    Q_D(QPicturePaintEngine);
+    int newpos = d->pic_d->pictb.pos();            // new position
+    int length = newpos - pos;
+    QRectF br(r);
+
+    if (length < 255) {                         // write 8-bit length
+        d->pic_d->pictb.seek(pos - 1);             // position to right index
+        d->s << (quint8)length;
+    } else {                                    // write 32-bit length
+        d->s << (quint32)0;                    // extend the buffer
+        d->pic_d->pictb.seek(pos - 1);             // position to right index
+        d->s << (quint8)255;                   // indicate 32-bit length
+        char *p = d->pic_d->pictb.buffer().data();
+        memmove(p+pos+4, p+pos, length);        // make room for 4 byte
+        d->s << (quint32)length;
+        newpos += 4;
+    }
+    d->pic_d->pictb.seek(newpos);                  // set to new position
+
+    if (br.width() > 0.0 || br.height() > 0.0) {
+        if (corr) {                             // widen bounding rect
+            int w2 = painter()->pen().width() / 2;
+            br.setCoords(br.left() - w2, br.top() - w2,
+                        br.right() + w2, br.bottom() + w2);
+        }
+        br = painter()->transform().mapRect(br);
+        if (painter()->hasClipping()) {
+            QRect cr = painter()->clipRegion().boundingRect();
+            br &= cr;
+        }
+
+        if (br.width() > 0.0 || br.height() > 0.0) {
+            int minx = qFloor(br.left());
+            int miny = qFloor(br.top());
+            int maxx = qCeil(br.right());
+            int maxy = qCeil(br.bottom());
+
+            if (d->pic_d->brect.width() > 0 || d->pic_d->brect.height() > 0) {
+                minx = qMin(minx, d->pic_d->brect.left());
+                miny = qMin(miny, d->pic_d->brect.top());
+                maxx = qMax(maxx, d->pic_d->brect.x() + d->pic_d->brect.width());
+                maxy = qMax(maxy, d->pic_d->brect.y() + d->pic_d->brect.height());
+                d->pic_d->brect = QRect(minx, miny, maxx - minx, maxy - miny);
+            } else {
+                d->pic_d->brect = QRect(minx, miny, maxx - minx, maxy - miny);
+            }
+        }
+    }
+}
+
+void QPicturePaintEngine::drawEllipse(const QRectF &rect)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << " -> drawEllipse():" << rect;
+#endif
+    int pos;
+    SERIALIZE_CMD(QPicturePrivate::PdcDrawEllipse);
+    d->s << rect;
+    writeCmdLength(pos, rect, true);
+}
+
+void QPicturePaintEngine::drawPath(const QPainterPath &path)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << " -> drawPath():" << path.boundingRect();
+#endif
+    int pos;
+    SERIALIZE_CMD(QPicturePrivate::PdcDrawPath);
+    d->s << path;
+    writeCmdLength(pos, path.boundingRect(), true);
+}
+
+void QPicturePaintEngine::drawPolygon(const QPointF *points, int numPoints, PolygonDrawMode mode)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << " -> drawPolygon(): size=" << numPoints;
+#endif
+    int pos;
+
+    QPolygonF polygon;
+    for (int i=0; i<numPoints; ++i)
+        polygon << points[i];
+
+    if (mode == PolylineMode) {
+        SERIALIZE_CMD(QPicturePrivate::PdcDrawPolyline);
+        d->s << polygon;
+    } else {
+        SERIALIZE_CMD(QPicturePrivate::PdcDrawPolygon);
+        d->s << polygon;
+        d->s << (qint8)(mode == OddEvenMode ? 0 : 1);
+    }
+
+    writeCmdLength(pos, polygon.boundingRect(), true);
+}
+
+void QPicturePaintEngine::drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << " -> drawPixmap():" << r;
+#endif
+    int pos;
+    SERIALIZE_CMD(QPicturePrivate::PdcDrawPixmap);
+
+    if (d->pic_d->in_memory_only) {
+        int index = d->pic_d->pixmap_list.size();
+        d->pic_d->pixmap_list.append(pm);
+        d->s << r << index << sr;
+    } else {
+        d->s << r << pm << sr;
+    }
+    writeCmdLength(pos, r, false);
+}
+
+void QPicturePaintEngine::drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &s)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << " -> drawTiledPixmap():" << r << s;
+#endif
+    int pos;
+    SERIALIZE_CMD(QPicturePrivate::PdcDrawTiledPixmap);
+    if (d->pic_d->in_memory_only) {
+        int index = d->pic_d->pixmap_list.size();
+        d->pic_d->pixmap_list.append(pixmap);
+        d->s << r << index << s;
+    } else {
+        d->s << r << pixmap << s;
+    }
+    writeCmdLength(pos, r, false);
+}
+
+extern int qt_defaultDpi();
+
+void QPicturePaintEngine::drawTextItem(const QPointF &p , const QTextItem &ti)
+{
+    Q_D(QPicturePaintEngine);
+#ifdef QT_PICTURE_DEBUG
+    qDebug() << " -> drawTextItem():" << p << ti.text();
+#endif
+
+    if (d->pic_d->formatMajor >= 9) {
+        const QTextItemInt &si = static_cast<const QTextItemInt &>(ti);
+        int pos;
+        SERIALIZE_CMD(QPicturePrivate::PdcDrawTextItem);
+        QFont fnt = ti.font();
+        fnt.setUnderline(false);
+        fnt.setStrikeOut(false);
+        fnt.setOverline(false);
+
+        qreal justificationWidth = 0;
+        if (si.justified)
+            justificationWidth = si.width.toReal();
+
+        d->s << p << ti.text() << fnt << ti.renderFlags() << double(fnt.d->dpi)/qt_defaultDpi() << justificationWidth;
+        writeCmdLength(pos, /*brect=*/QRectF(), /*corr=*/false);
+    } else if (d->pic_d->formatMajor >= 8) {
+        // old old (buggy) format
+        int pos;
+        SERIALIZE_CMD(QPicturePrivate::PdcDrawTextItem);
+        d->s << QPointF(p.x(), p.y() - ti.ascent()) << ti.text() << ti.font() << ti.renderFlags();
+        writeCmdLength(pos, /*brect=*/QRectF(), /*corr=*/false);
+    } else {
+        // old (buggy) format
+        int pos;
+        SERIALIZE_CMD(QPicturePrivate::PdcDrawText2);
+        d->s << p << ti.text();
+        writeCmdLength(pos, QRectF(p, QSizeF(1,1)), true);
+    }
+}
+
+void QPicturePaintEngine::updateState(const QPaintEngineState &state)
+{
+    QPaintEngine::DirtyFlags flags = state.state();
+    if (flags & DirtyPen) updatePen(state.pen());
+    if (flags & DirtyBrush) updateBrush(state.brush());
+    if (flags & DirtyBrushOrigin) updateBrushOrigin(state.brushOrigin());
+    if (flags & DirtyFont) updateFont(state.font());
+    if (flags & DirtyBackground) updateBackground(state.backgroundMode(), state.backgroundBrush());
+    if (flags & DirtyTransform) updateMatrix(state.transform());
+    if (flags & DirtyClipEnabled) updateClipEnabled(state.isClipEnabled());
+    if (flags & DirtyClipRegion) updateClipRegion(state.clipRegion(), state.clipOperation());
+    if (flags & DirtyClipPath) updateClipPath(state.clipPath(), state.clipOperation());
+    if (flags & DirtyHints) updateRenderHints(state.renderHints());
+    if (flags & DirtyCompositionMode) updateCompositionMode(state.compositionMode());
+    if (flags & DirtyOpacity) updateOpacity(state.opacity());
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_PICTURE