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Diffstat (limited to 'src/gui/image/qpaintengine_pic.cpp')
| -rw-r--r-- | src/gui/image/qpaintengine_pic.cpp | 519 |
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 index 0000000..cba9827 --- /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 ®ion, 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 |