Hi,
I’ve played a bit with Podofobrowser. And here is an insomnia-patch^^concept
which allow viewing of content streams (to be honest, just paths). The result
is not really interesting but i would be happy to get your opinions about the
way it’s done and eventually if you see obvious problems which would prevent
to add support for some kind of objects. I know the fastest way would be to
just use Poppler, but I’m happy at hacking PDFs and would be thrilled to
support manipulation of PDF objects.
TIA
--
Pierre Marchand
Index: src/podofobrowserbase.ui
===================================================================
--- src/podofobrowserbase.ui (révision 986)
+++ src/podofobrowserbase.ui (copie de travail)
@@ -5,7 +5,7 @@
<rect>
<x>0</x>
<y>0</y>
- <width>758</width>
+ <width>891</width>
<height>629</height>
</rect>
</property>
@@ -13,25 +13,11 @@
<string>PoDoFo Browser</string>
</property>
<widget class="QWidget" name="widget" >
- <property name="geometry" >
- <rect>
- <x>0</x>
- <y>58</y>
- <width>758</width>
- <height>571</height>
- </rect>
- </property>
- <layout class="QVBoxLayout" >
- <property name="spacing" >
- <number>6</number>
- </property>
- <property name="margin" >
- <number>9</number>
- </property>
- <item>
+ <layout class="QGridLayout" name="gridLayout_3" >
+ <item row="0" column="0" >
<widget class="QSplitter" name="splitter" >
<property name="orientation" >
- <enum>Qt::Vertical</enum>
+ <enum>Qt::Horizontal</enum>
</property>
<widget class="QTreeView" name="listObjects" >
<property name="mouseTracking" >
@@ -47,24 +33,18 @@
<bool>true</bool>
</property>
</widget>
- <widget class="QSplitter" name="splitter3" >
- <property name="orientation" >
- <enum>Qt::Horizontal</enum>
- </property>
- <widget class="QSplitter" name="splitter2" >
- <property name="orientation" >
- <enum>Qt::Vertical</enum>
- </property>
- <widget class="QWidget" name="layout3" >
- <layout class="QVBoxLayout" >
- <property name="spacing" >
- <number>6</number>
- </property>
- <property name="margin" >
- <number>0</number>
- </property>
+ <widget class="QWidget" native="1" name="widget_2" >
+ <layout class="QGridLayout" name="gridLayout_2" >
+ <item row="0" column="0" >
+ <layout class="QHBoxLayout" name="horizontalLayout" >
<item>
<widget class="QLabel" name="textLabel1" >
+ <property name="sizePolicy" >
+ <sizepolicy vsizetype="Preferred" hsizetype="Preferred" >
+ <horstretch>2</horstretch>
+ <verstretch>0</verstretch>
+ </sizepolicy>
+ </property>
<property name="text" >
<string>Contents of the associated stream:</string>
</property>
@@ -74,131 +54,129 @@
</widget>
</item>
<item>
- <widget class="QLabel" name="labelStream" >
+ <widget class="QCheckBox" name="showPreview" >
<property name="text" >
- <string/>
+ <string>Show Preview (if possible)</string>
</property>
- <property name="wordWrap" >
- <bool>false</bool>
+ <property name="checked" >
+ <bool>true</bool>
</property>
</widget>
</item>
- <item>
- <widget class="QStackedWidget" name="stackedWidget" >
- <property name="currentIndex" >
- <number>0</number>
- </property>
- <widget class="QWidget" name="pageStream" >
- <property name="geometry" >
- <rect>
- <x>0</x>
- <y>0</y>
- <width>738</width>
- <height>246</height>
- </rect>
- </property>
- <layout class="QVBoxLayout" name="verticalLayout" >
- <item>
- <widget class="QTextEdit" name="textStream" >
- <property name="undoRedoEnabled" >
- <bool>false</bool>
- </property>
- <property name="readOnly" >
- <bool>false</bool>
- </property>
- <property name="acceptRichText" >
- <bool>false</bool>
- </property>
- </widget>
- </item>
- </layout>
- </widget>
- <widget class="QWidget" name="pageHexView" >
- <property name="geometry" >
- <rect>
- <x>0</x>
- <y>0</y>
- <width>738</width>
- <height>246</height>
- </rect>
- </property>
- <layout class="QVBoxLayout" name="verticalLayout_2" >
- <item>
- <widget class="QHexView" native="1" name="hexView" />
- </item>
- </layout>
- </widget>
- </widget>
- </item>
- <item>
- <layout class="QHBoxLayout" >
- <property name="spacing" >
- <number>6</number>
- </property>
- <property name="margin" >
- <number>0</number>
- </property>
+ </layout>
+ </item>
+ <item row="1" column="0" >
+ <widget class="QLabel" name="labelStream" >
+ <property name="text" >
+ <string/>
+ </property>
+ <property name="wordWrap" >
+ <bool>false</bool>
+ </property>
+ </widget>
+ </item>
+ <item row="2" column="0" >
+ <widget class="QStackedWidget" name="stackedWidget" >
+ <property name="currentIndex" >
+ <number>0</number>
+ </property>
+ <widget class="QWidget" name="pageStream" >
+ <layout class="QVBoxLayout" name="verticalLayout" >
<item>
- <widget class="QPushButton" name="buttonImport" >
- <property name="enabled" >
+ <widget class="QTextEdit" name="textStream" >
+ <property name="undoRedoEnabled" >
<bool>false</bool>
</property>
- <property name="text" >
- <string>&Import Stream ...</string>
+ <property name="readOnly" >
+ <bool>false</bool>
</property>
- <property name="shortcut" >
- <string>Alt+I</string>
- </property>
- </widget>
- </item>
- <item>
- <widget class="QPushButton" name="buttonExport" >
- <property name="enabled" >
+ <property name="acceptRichText" >
<bool>false</bool>
</property>
- <property name="text" >
- <string>&Export Stream ...</string>
- </property>
- <property name="shortcut" >
- <string>Alt+E</string>
- </property>
</widget>
</item>
+ </layout>
+ </widget>
+ <widget class="QWidget" name="pageHexView" >
+ <layout class="QVBoxLayout" name="verticalLayout_2" >
<item>
- <spacer>
- <property name="orientation" >
- <enum>Qt::Horizontal</enum>
- </property>
- <property name="sizeType" >
- <enum>QSizePolicy::Expanding</enum>
- </property>
- <property name="sizeHint" stdset="0" >
- <size>
- <width>241</width>
- <height>21</height>
- </size>
- </property>
- </spacer>
+ <widget class="QHexView" native="1" name="hexView" />
</item>
</layout>
+ </widget>
+ <widget class="QWidget" name="pageView" >
+ <layout class="QGridLayout" name="gridLayout" >
+ <item row="0" column="0" >
+ <widget class="PodofoView" name="podofoView" />
+ </item>
+ </layout>
+ </widget>
+ </widget>
+ </item>
+ <item row="3" column="0" >
+ <layout class="QHBoxLayout" >
+ <property name="spacing" >
+ <number>6</number>
+ </property>
+ <property name="margin" >
+ <number>0</number>
+ </property>
+ <item>
+ <widget class="QPushButton" name="buttonImport" >
+ <property name="enabled" >
+ <bool>false</bool>
+ </property>
+ <property name="text" >
+ <string>&Import Stream ...</string>
+ </property>
+ <property name="shortcut" >
+ <string>Alt+I</string>
+ </property>
+ </widget>
</item>
+ <item>
+ <widget class="QPushButton" name="buttonExport" >
+ <property name="enabled" >
+ <bool>false</bool>
+ </property>
+ <property name="text" >
+ <string>&Export Stream ...</string>
+ </property>
+ <property name="shortcut" >
+ <string>Alt+E</string>
+ </property>
+ </widget>
+ </item>
+ <item>
+ <spacer>
+ <property name="orientation" >
+ <enum>Qt::Horizontal</enum>
+ </property>
+ <property name="sizeType" >
+ <enum>QSizePolicy::Expanding</enum>
+ </property>
+ <property name="sizeHint" stdset="0" >
+ <size>
+ <width>241</width>
+ <height>21</height>
+ </size>
+ </property>
+ </spacer>
+ </item>
</layout>
- </widget>
- </widget>
+ </item>
+ </layout>
+ <zorder></zorder>
+ <zorder>labelStream</zorder>
+ <zorder>textStream</zorder>
+ <zorder>stackedWidget</zorder>
+ <zorder></zorder>
</widget>
</widget>
</item>
</layout>
</widget>
<widget class="QToolBar" name="toolBar" >
- <property name="geometry" >
- <rect>
- <x>0</x>
- <y>24</y>
- <width>758</width>
- <height>34</height>
- </rect>
- </property>
<property name="orientation" >
<enum>Qt::Horizontal</enum>
</property>
@@ -227,8 +205,8 @@
<rect>
<x>0</x>
<y>0</y>
- <width>758</width>
- <height>24</height>
+ <width>891</width>
+ <height>28</height>
</rect>
</property>
<widget class="QMenu" name="helpMenu" >
@@ -599,6 +577,11 @@
<header>hexwidget/QHexView.h</header>
<container>1</container>
</customwidget>
+ <customwidget>
+ <class>PodofoView</class>
+ <extends>QGraphicsView</extends>
+ <header>podofoview.h</header>
+ </customwidget>
</customwidgets>
<resources>
<include location="podofobrowserrsrc.qrc" />
Index: src/podofoview.cpp
===================================================================
--- src/podofoview.cpp (révision 0)
+++ src/podofoview.cpp (révision 0)
@@ -0,0 +1,439 @@
+/***************************************************************************
+ * Copyright (C) 2009 by Pierre Marchand *
+ * [email protected] *
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
+ * GNU General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program; if not, write to the *
+ * Free Software Foundation, Inc., *
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ ***************************************************************************/
+
+#include "podofoview.h"
+
+#include <QGraphicsItem>
+#include <QGraphicsScene>
+#include <QTransform>
+
+#include <QDebug>
+
+PodofoView::PodofoView ( QWidget * parent )
+ :QGraphicsView ( parent )
+{
+ setScene ( new QGraphicsScene );
+ QTransform t;
+ t.scale ( 1.0,-1.0 );
+ setTransform ( t, false );
+ setRenderHint(QPainter::Antialiasing, true);
+ setRenderHint(QPainter::TextAntialiasing, true);
+ setRenderHint(QPainter::SmoothPixmapTransform, true);
+
+ // makers
+ m_itemMakers << ( new SimpleColorMaker );
+ m_itemMakers << ( new PathItemMaker );
+ m_itemMakers << ( new SimpleTransformMaker );
+ m_itemMakers << ( new GraphicStackMaker );
+ // (...)
+ // last one just passes, kind of "default" clause
+ m_itemMakers << ( new NoOpMaker );
+}
+
+
+void PodofoView::clear()
+{
+ foreach ( QGraphicsItem *item, m_itemList )
+ {
+ if ( item )
+ delete item;
+ }
+ m_itemList.clear();
+ setSceneRect ( QRectF() );
+}
+
+void PodofoView::setGeometry ( QRectF rect )
+{
+ setSceneRect ( rect );
+}
+
+
+void PodofoView::renderStream ( const QByteArray & stream )
+{
+ qDebug() << "PodofoView::renderStream";
+ PoDoFo::PdfContentsTokenizer * tokenizer = new PoDoFo::PdfContentsTokenizer ( stream.data(), stream.length() );
+
+ const char* pszToken = NULL;
+ PoDoFo::PdfVariant var;
+ PoDoFo::EPdfContentsType eType;
+ std::string str;
+
+ PdfContentStream contentStream;
+
+ QList<PoDoFo::PdfVariant> stack;
+
+ while ( tokenizer->ReadNext ( eType, pszToken, var ) )
+ {
+ if ( eType == PoDoFo::ePdfContentsType_Keyword )
+ {
+ contentStream << PdfOperation ( QString::fromAscii ( pszToken ), stack );
+ stack.clear();
+ }
+ else if ( eType == PoDoFo::ePdfContentsType_Variant )
+ {
+ stack << var;
+ }
+ else
+ {
+ // Impossible; type must be keyword or variant
+ qWarning ( "Impossible; type must be keyword or variant" );
+ }
+ }
+
+ delete tokenizer;
+// qDebug() <<"Content Stream tokenized";
+
+ QBrush defaultBrush(QColor(Qt::transparent), Qt::SolidPattern);
+ QPen defaultPen(QColor(Qt::transparent));
+ GraphicState gState;
+ gState.pen = defaultPen;
+ gState.brush = defaultBrush;
+
+ gState.scene = scene();
+ gState.itemList = &m_itemList;
+
+ PdfContentIterator it ( contentStream.begin() );
+ while ( it != contentStream.end() )
+ {
+ qDebug() <<"Processing op:"<<it->key;
+ foreach ( GraphicItemMakerBase *gim, m_itemMakers )
+ {
+ if ( gim->support ( it->key ) )
+ {
+// qDebug()<<"=========";
+// qDebug()<<gState.pen;
+ it = gim->item ( it, gState );
+// qDebug()<<gState.pen;
+
+ break;
+ }
+ }
+ }
+
+
+}
+
+
+/// item makers
+PdfContentIterator NoOpMaker::item ( PdfContentIterator csIterator, GraphicState & gState )
+{
+ qDebug() <<"NoOp:"<< csIterator->key;
+ return ++csIterator;
+}
+
+// Paths
+PathItemMaker::PathItemMaker()
+{
+ supportedOps << QString::fromAscii ( "m" )
+ << QString::fromAscii ( "l" )
+ << QString::fromAscii ( "c" )
+ << QString::fromAscii ( "v" )
+ << QString::fromAscii ( "y" )
+ << QString::fromAscii ( "h" )
+ << QString::fromAscii ( "re" );
+}
+
+bool PathItemMaker::support ( const QString & op ) const
+{
+ return supportedOps.contains ( op );
+}
+
+PdfContentIterator PathItemMaker::item ( PdfContentIterator csIterator, GraphicState & gState )
+{
+ PdfContentIterator it ( csIterator );
+ QPainterPath p;
+ while ( 1 )
+ {
+ if ( support ( it->key ) )
+ {
+ if ( it->key == QString::fromAscii ( "m" ) )
+ {
+ if ( checkVarCount ( 2, it->operands ) )
+ {
+ double dPosX ( it->operands[0].GetReal() );
+ double dPosY ( it->operands[1].GetReal() );
+ p.moveTo ( QPointF ( dPosX, dPosY ) );
+ }
+ else
+ {
+ qDebug ( QString::fromAscii ( "Wrong number of operands (%1) for operator m " ).arg ( it->operands.count() ).toUtf8() );
+ }
+ }
+ else if ( it->key == QString::fromAscii ( "l" ) )
+ {
+ if ( checkVarCount ( 2, it->operands ) )
+ {
+ double dPosX ( it->operands[0].GetReal() );
+ double dPosY ( it->operands[1].GetReal() );
+ p.lineTo ( QPointF ( dPosX, dPosY ) );
+ }
+ else
+ {
+ qDebug ( QString::fromAscii ( "Wrong number of operands (%1) for operator l " ).arg ( it->operands.count() ).toUtf8() );
+ }
+ }
+ else if ( it->key == QString::fromAscii ( "c" ) )
+ {
+ if ( checkVarCount ( 6, it->operands ) )
+ {
+ double x1 ( it->operands[0].GetReal() );
+ double y1 ( it->operands[1].GetReal() );
+ double x2 ( it->operands[2].GetReal() );
+ double y2 ( it->operands[3].GetReal() );
+ double x3 ( it->operands[4].GetReal() );
+ double y3 ( it->operands[5].GetReal() );
+
+ p.cubicTo ( QPointF ( x1, y1 ) ,
+ QPointF ( x2, y2 ) ,
+ QPointF ( x3, y3 ) );
+ }
+ else
+ {
+ qDebug ( QString::fromAscii ( "Wrong number of operands (%1) for operator c " ).arg ( it->operands.count() ).toUtf8() );
+ }
+ }
+ else if ( it->key == QString::fromAscii ( "v" ) )
+ {
+ if ( checkVarCount ( 4, it->operands ) )
+ {
+ double x1 ( p.currentPosition().x() );
+ double y1 ( p.currentPosition().y() );
+ double x2 ( it->operands[0].GetReal() );
+ double y2 ( it->operands[1].GetReal() );
+ double x3 ( it->operands[2].GetReal() );
+ double y3 ( it->operands[3].GetReal() );
+
+ p.cubicTo ( QPointF ( x1, y1 ) ,
+ QPointF ( x2, y2 ) ,
+ QPointF ( x3, y3 ) );
+ }
+ else
+ {
+ qDebug ( QString::fromAscii ( "Wrong number of operands (%1) for operator v " ).arg ( it->operands.count() ).toUtf8() );
+ }
+ }
+ else if ( it->key == QString::fromAscii ( "y" ) )
+ {
+ if ( checkVarCount ( 4, it->operands ) )
+ {
+ double x1 ( it->operands[0].GetReal() );
+ double y1 ( it->operands[1].GetReal() );
+ double x2 ( it->operands[2].GetReal() );
+ double y2 ( it->operands[3].GetReal() );
+ double x3 ( it->operands[2].GetReal() );
+ double y3 ( it->operands[3].GetReal() );
+
+ p.cubicTo ( QPointF ( x1, y1 ) ,
+ QPointF ( x2, y2 ) ,
+ QPointF ( x3, y3 ) );
+ }
+ else
+ {
+ qDebug ( QString::fromAscii ( "Wrong number of operands (%1) for operator y " ).arg ( it->operands.count() ).toUtf8() );
+ }
+ }
+ else if ( it->key == QString::fromAscii ( "h" ) )
+ {
+ p.closeSubpath();
+ }
+ else if ( it->key == QString::fromAscii ( "re" ) )
+ {
+ if ( checkVarCount ( 4, it->operands ) )
+ {
+ double x1 ( it->operands[0].GetReal() );
+ double y1 ( it->operands[1].GetReal() );
+ double width ( it->operands[2].GetReal() );
+ double height ( it->operands[3].GetReal() );
+
+ p.addRect ( x1, y1 , width, height );
+ }
+ else
+ {
+ qDebug ( QString::fromAscii ( "Wrong number of operands (%1) for operator re " ).arg ( it->operands.count() ).toUtf8() );
+ }
+ }
+ else
+ {
+ qDebug ( QString::fromAscii ( "Unsupported Path operator :\"%1\"" ).arg ( it->key ).toUtf8() );
+ }
+
+ it++;
+ }
+ else // path must be finished!
+ {
+ gState.itemList->append ( gState.scene->addPath ( p * gState.cm, gState.pen, gState.brush ) );
+ break;
+ }
+ }
+
+ return it;
+}
+
+// Simple colors
+
+SimpleColorMaker::SimpleColorMaker()
+{
+ supportedOps << QString::fromAscii ( "g" )
+ << QString::fromAscii ( "G" )
+ << QString::fromAscii ( "rg" )
+ << QString::fromAscii ( "RG" )
+ << QString::fromAscii ( "k" )
+ << QString::fromAscii ( "K" );
+}
+
+bool SimpleColorMaker::support ( const QString & op ) const
+{
+ return supportedOps.contains ( op );
+}
+
+PdfContentIterator SimpleColorMaker::item ( PdfContentIterator csIterator, GraphicState & gState )
+{
+ QColor color;
+ if ( ( csIterator->key == QString::fromAscii ( "G" ) ) )
+ {
+ if ( checkVarCount ( 1, csIterator->operands ) )
+ {
+ double g ( csIterator->operands[0].GetReal() );
+ color.setRgbF ( g,g,g,1.0 );
+ gState.pen.setColor ( color );
+ }
+ }
+ else if ( ( csIterator->key == QString::fromAscii ( "g" ) ) )
+ {
+ if ( checkVarCount ( 1, csIterator->operands ) )
+ {
+ double g ( csIterator->operands[0].GetReal() );
+ color.setRgbF ( g,g,g,1.0 );
+ gState.brush.setColor ( color );
+ }
+ }
+ else if ( ( csIterator->key == QString::fromAscii ( "RG" ) ) )
+ {
+ if ( checkVarCount ( 3, csIterator->operands ) )
+ {
+ double r ( csIterator->operands[0].GetReal() );
+ double g ( csIterator->operands[1].GetReal() );
+ double b ( csIterator->operands[2].GetReal() );
+ color.setRgbF ( r,g,b,1.0 );
+ gState.pen.setColor ( color );
+ }
+ }
+ else if ( ( csIterator->key == QString::fromAscii ( "rg" ) ) )
+ {
+ if ( checkVarCount ( 3, csIterator->operands ) )
+ {
+ double r ( csIterator->operands[0].GetReal() );
+ double g ( csIterator->operands[1].GetReal() );
+ double b ( csIterator->operands[2].GetReal() );
+ color.setRgbF ( r,g,b,1.0 );
+ gState.brush.setColor ( color );
+ }
+ }
+ else if ( ( csIterator->key == QString::fromAscii ( "K" ) ) )
+ {
+ if ( checkVarCount ( 4, csIterator->operands ) )
+ {
+ double c ( csIterator->operands[0].GetReal() );
+ double m ( csIterator->operands[1].GetReal() );
+ double y ( csIterator->operands[2].GetReal() );
+ double k ( csIterator->operands[3].GetReal() );
+ color.setCmykF ( c,m,y,k,1.0 );
+ gState.pen.setColor ( color );
+ }
+ }
+ else if ( ( csIterator->key == QString::fromAscii ( "k" ) ) )
+ {
+ if ( checkVarCount ( 4, csIterator->operands ) )
+ {
+ double c ( csIterator->operands[0].GetReal() );
+ double m ( csIterator->operands[1].GetReal() );
+ double y ( csIterator->operands[2].GetReal() );
+ double k ( csIterator->operands[3].GetReal() );
+ color.setCmykF ( c,m,y,k,1.0 );
+ gState.brush.setColor ( color );
+ }
+ }
+
+ return ++csIterator;
+}
+
+// simple ctm
+SimpleTransformMaker::SimpleTransformMaker()
+{
+ supportedOps << QString::fromAscii ( "cm" );
+}
+
+bool SimpleTransformMaker::support ( const QString & op ) const
+{
+ return supportedOps.contains ( op );
+}
+
+PdfContentIterator SimpleTransformMaker::item ( PdfContentIterator csIterator, GraphicState & gState )
+{
+ if ( checkVarCount ( 6, csIterator->operands ) )
+ {
+ double a ( csIterator->operands[0].GetReal() );
+ double b ( csIterator->operands[1].GetReal() );
+ double c ( csIterator->operands[2].GetReal() );
+ double d ( csIterator->operands[3].GetReal() );
+ double e ( csIterator->operands[4].GetReal() );
+ double f ( csIterator->operands[5].GetReal() );
+
+ QMatrix m ( a,b,c,d,e,f );
+ gState.cm = m;
+ }
+ return ++csIterator;
+}
+
+GraphicStackMaker::GraphicStackMaker()
+{
+ supportedOps << QString::fromAscii ( "q" )
+ << QString::fromAscii ( "Q" );
+}
+
+bool GraphicStackMaker::support(const QString & op) const
+{
+ return supportedOps.contains ( op );
+}
+
+PdfContentIterator GraphicStackMaker::item(PdfContentIterator csIterator, GraphicState & gState)
+{
+ if(csIterator->key == QString::fromAscii("q"))
+ {
+ m_stack << gState;
+ }
+ else if(csIterator->key == QString::fromAscii("Q"))
+ {
+ if(!m_stack.isEmpty())
+ {
+ gState = m_stack.last();
+ m_stack.removeLast();
+ }
+ }
+ return ++csIterator;
+}
+
+
+
+
+
+
+
+
Index: src/podofoview.h
===================================================================
--- src/podofoview.h (révision 0)
+++ src/podofoview.h (révision 0)
@@ -0,0 +1,132 @@
+/***************************************************************************
+ * Copyright (C) 2009 by Pierre Marchand *
+ * [email protected] *
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
+ * GNU General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program; if not, write to the *
+ * Free Software Foundation, Inc., *
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ ***************************************************************************/
+
+#ifndef PODOFOVIEW_H
+#define PODOFOVIEW_H
+
+#include <podofo/podofo.h>
+
+#include <QByteArray>
+#include <QGraphicsView>
+#include <QList>
+#include <QMap>
+#include <QRectF>
+
+class QGraphicsScene;
+class QGraphicsItem;
+
+struct PdfOperation
+{
+ QString key;
+ QList<PoDoFo::PdfVariant> operands;
+
+ PdfOperation(const QString& k, const QList<PoDoFo::PdfVariant>& ops)
+ :key(k), operands(ops)
+ {}
+};
+typedef QList<PdfOperation> PdfContentStream;
+typedef QList<PdfOperation>::iterator PdfContentIterator;
+
+
+struct GraphicState
+{
+ QPen pen;
+ QBrush brush;
+ QMatrix cm;
+
+ QGraphicsScene * scene;
+ QList<QGraphicsItem*> * itemList;
+};
+
+class GraphicItemMakerBase
+{
+ public:
+ GraphicItemMakerBase(){}
+ ~GraphicItemMakerBase(){}
+
+ virtual PdfContentIterator item(PdfContentIterator csIterator, GraphicState& gState) = 0;
+ virtual bool support(const QString& op) const {return false;}
+
+ protected:
+ bool checkVarCount(unsigned int control, const QList<PoDoFo::PdfVariant>& ops) const
+ {
+ return ( control == ops.count() ) ? true : false;
+ }
+};
+
+class NoOpMaker : public GraphicItemMakerBase
+{
+ public:
+ NoOpMaker(){}
+ PdfContentIterator item(PdfContentIterator csIterator, GraphicState& gState);
+ bool support(const QString& op) const {return true;}
+};
+
+class GraphicStackMaker : public GraphicItemMakerBase
+{
+ QStringList supportedOps;
+ QList<GraphicState> m_stack;
+ public:
+ GraphicStackMaker();
+ PdfContentIterator item(PdfContentIterator csIterator, GraphicState& gState);
+ bool support(const QString& op) const ;
+};
+
+class SimpleTransformMaker : public GraphicItemMakerBase
+{
+ QStringList supportedOps;
+ public:
+ SimpleTransformMaker();
+ PdfContentIterator item(PdfContentIterator csIterator, GraphicState& gState);
+ bool support(const QString& op) const ;
+};
+
+class SimpleColorMaker: public GraphicItemMakerBase
+{
+ QStringList supportedOps;
+ public:
+ SimpleColorMaker();
+ PdfContentIterator item(PdfContentIterator csIterator, GraphicState& gState);
+ bool support(const QString& op) const ;
+};
+
+class PathItemMaker : public GraphicItemMakerBase
+{
+ QStringList supportedOps;
+ public:
+ PathItemMaker();
+ PdfContentIterator item(PdfContentIterator csIterator, GraphicState& gState);
+ bool support(const QString& op) const ;
+};
+
+
+class PodofoView : public QGraphicsView
+{
+ public:
+ PodofoView(QWidget * parent);
+ void clear();
+ void setGeometry(QRectF rect=QRectF());
+ void renderStream(const QByteArray& stream);
+ private:
+ QList<QGraphicsItem*> m_itemList;
+ QList<GraphicItemMakerBase*> m_itemMakers;
+};
+
+#endif // PODOFOVIEW_H
\ No newline at end of file
Index: src/podofobrowser.cpp
===================================================================
--- src/podofobrowser.cpp (révision 986)
+++ src/podofobrowser.cpp (copie de travail)
@@ -20,6 +20,7 @@
#include "podofobrowser.h"
#include "podofoutil.h"
+#include "podofoview.h"
#include "backgroundloader.h"
#include "ui_podofoaboutdlg.h"
#include "ui_podofofinddlg.h"
@@ -179,8 +180,8 @@
list << width()/3;
list << (width()/3 * 2);
- splitter2->setSizes( list );
- splitter3->setSizes( list );
+// splitter2->setSizes( list );
+// splitter3->setSizes( list );
this->resize( w, h );
@@ -351,6 +352,8 @@
m_pByteArrayIO = NULL;
delete m_pByteArray;
m_pByteArray = NULL;
+
+ podofoView->clear();
// make keyboard navigation easier, especially in Catalog View mode
// hopefully this does not slow down to much.
@@ -422,11 +425,20 @@
{
// TODO FIXME XXX AUUGH! Encoding assumption like nothing ever
// seen before!
+ if(!showPreview->isChecked())
+ {
QString data = QString::fromAscii(pBuf, lLen);
textStream->setEnabled(true);
textStream->setText( data );
displayInfo = tr("displayed in full");
stackedWidget->setCurrentWidget( pageStream );
+ }
+ else
+ {
+ QByteArray ba(pBuf, lLen);
+ podofoView->renderStream(ba);
+ stackedWidget->setCurrentWidget(pageView);
+ }
}
else
{
Index: src/CMakeLists.txt
===================================================================
--- src/CMakeLists.txt (révision 986)
+++ src/CMakeLists.txt (copie de travail)
@@ -33,6 +33,7 @@
podofoutil.cpp
pdfobjectmodel.cpp
podofobrowser.cpp
+ podofoview.cpp
main.cpp
hexwidget/QHexView.cpp
${podofobrowser_QRC_SRCS}
Index: CMakeLists.txt
===================================================================
--- CMakeLists.txt (révision 986)
+++ CMakeLists.txt (copie de travail)
@@ -16,10 +16,19 @@
FIND_PACKAGE(Qt4 REQUIRED)
INCLUDE(${QT_USE_FILE})
-#FIND_PACKAGE(ZLIB REQUIRED)
-#FIND_PACKAGE(LIBFREETYPE REQUIRED)
-#FIND_PACKAGE(LIBJPEG REQUIRED)
+FIND_PACKAGE(ZLIB REQUIRED)
+FIND_PACKAGE(LIBFREETYPE REQUIRED)
+FIND_PACKAGE(LIBJPEG REQUIRED)
+IF(DEFINED PODOFO_NOT_SYSTEM)
+ SET(PODOFO_BUILD_STATIC 1)
+ SET(PODOFO_BUILD_SHARED 0)
+ SET(PODOFO_BUILD_LIB_ONLY 1)
+ ADD_SUBDIRECTORY(externals/required_libpodofo)
+ SET(LIBPODOFO_H ${CMAKE_CURRENT_SOURCE_DIR}/externals/required_libpodofo)
+ SET(LIBPODOFO_LIB podofo_static)
+ MESSAGE("+++Done setting up private PoDoFo copy")
+ELSE(DEFINED PODOFO_NOT_SYSTEM)
FIND_PACKAGE(LIBPODOFO)
IF(NOT LIBPODOFO_FOUND)
MESSAGE("+++PoDoFo not found... building private copy")
@@ -31,8 +40,8 @@
SET(LIBPODOFO_LIB podofo_static)
MESSAGE("+++Done setting up private PoDoFo copy")
ENDIF(NOT LIBPODOFO_FOUND)
+ENDIF(DEFINED PODOFO_NOT_SYSTEM)
-
FIND_PACKAGE(LIBSTLPORT)
SET(stlport_libraries_if_use_stlport)
IF(USE_STLPORT)
------------------------------------------------------------------------------
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