From d796c9dd933ab96ec83b9a634feedd5d32e1ba3f Mon Sep 17 00:00:00 2001 From: Timothy Pearson Date: Tue, 8 Nov 2011 12:31:36 -0600 Subject: Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731 --- doc/html/scribble-example.html | 365 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 365 insertions(+) create mode 100644 doc/html/scribble-example.html (limited to 'doc/html/scribble-example.html') diff --git a/doc/html/scribble-example.html b/doc/html/scribble-example.html new file mode 100644 index 000000000..d116a98dc --- /dev/null +++ b/doc/html/scribble-example.html @@ -0,0 +1,365 @@ + + + + + +Simple Painting Application + + + + + + + +

Simple Painting Application

+ + +

+This example implements the famous scribble example. You can draw around +in the canvas with different pens and save the result as picture. +

Header file: +

/****************************************************************************
+** $Id: qt/scribble.h   3.3.8   edited Jan 11 14:37 $
+**
+** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for TQt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#ifndef SCRIBBLE_H
+#define SCRIBBLE_H
+
+#include <qmainwindow.h>
+#include <qpen.h>
+#include <qpoint.h>
+#include <qpixmap.h>
+#include <qwidget.h>
+#include <qstring.h>
+#include <qpointarray.h>
+
+class TQMouseEvent;
+class TQResizeEvent;
+class TQPaintEvent;
+class TQToolButton;
+class TQSpinBox;
+
+class Canvas : public TQWidget
+{
+    Q_OBJECT
+
+public:
+    Canvas( TQWidget *parent = 0, const char *name = 0 );
+
+    void setPenColor( const TQColor &c )
+    { pen.setColor( c ); }
+
+    void setPenWidth( int w )
+    { pen.setWidth( w ); }
+
+    TQColor penColor()
+    { return pen.color(); }
+
+    int penWidth()
+    { return pen.width(); }
+
+    void save( const TQString &filename, const TQString &format );
+
+    void clearScreen();
+
+protected:
+    void mousePressEvent( TQMouseEvent *e );
+    void mouseReleaseEvent( TQMouseEvent *e );
+    void mouseMoveEvent( TQMouseEvent *e );
+    void resizeEvent( TQResizeEvent *e );
+    void paintEvent( TQPaintEvent *e );
+
+    TQPen pen;
+    TQPointArray polyline;
+
+    bool mousePressed;
+
+    TQPixmap buffer;
+
+};
+
+class Scribble : public TQMainWindow
+{
+    Q_OBJECT
+
+public:
+    Scribble( TQWidget *parent = 0, const char *name = 0 );
+
+protected:
+    Canvas* canvas;
+
+    TQSpinBox *bPWidth;
+    TQToolButton *bPColor, *bSave, *bClear;
+
+protected slots:
+    void slotSave();
+    void slotColor();
+    void slotWidth( int );
+    void slotClear();
+
+};
+
+#endif
+

+ +

Implementation: +

/****************************************************************************
+** $Id: qt/scribble.cpp   3.3.8   edited Jan 11 14:37 $
+**
+** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for TQt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#include "scribble.h"
+
+#include <qapplication.h>
+#include <qevent.h>
+#include <qpainter.h>
+#include <qtoolbar.h>
+#include <qtoolbutton.h>
+#include <qspinbox.h>
+#include <qtooltip.h>
+#include <qrect.h>
+#include <qpoint.h>
+#include <qcolordialog.h>
+#include <qfiledialog.h>
+#include <qcursor.h>
+#include <qimage.h>
+#include <qstrlist.h>
+#include <qpopupmenu.h>
+#include <qintdict.h>
+
+const bool no_writing = FALSE;
+
+Canvas::Canvas( TQWidget *parent, const char *name )
+    : TQWidget( parent, name, WStaticContents ), pen( TQt::red, 3 ), polyline(3),
+      mousePressed( FALSE ), buffer( width(), height() )
+{
+
+    if ((qApp->argc() > 0) && !buffer.load(qApp->argv()[1]))
+        buffer.fill( colorGroup().base() );
+    setBackgroundMode( TQWidget::PaletteBase );
+#ifndef QT_NO_CURSOR
+    setCursor( TQt::crossCursor );
+#endif
+}
+
+void Canvas::save( const TQString &filename, const TQString &format )
+{
+    if ( !no_writing )
+        buffer.save( filename, format.upper() );
+}
+
+void Canvas::clearScreen()
+{
+    buffer.fill( colorGroup().base() );
+    repaint( FALSE );
+}
+
+void Canvas::mousePressEvent( TQMouseEvent *e )
+{
+    mousePressed = TRUE;
+    polyline[2] = polyline[1] = polyline[0] = e->pos();
+}
+
+void Canvas::mouseReleaseEvent( TQMouseEvent * )
+{
+    mousePressed = FALSE;
+}
+
+void Canvas::mouseMoveEvent( TQMouseEvent *e )
+{
+    if ( mousePressed ) {
+        TQPainter painter;
+        painter.begin( &buffer );
+        painter.setPen( pen );
+        polyline[2] = polyline[1];
+        polyline[1] = polyline[0];
+        polyline[0] = e->pos();
+        painter.drawPolyline( polyline );
+        painter.end();
+
+        TQRect r = polyline.boundingRect();
+        r = r.normalize();
+        r.setLeft( r.left() - penWidth() );
+        r.setTop( r.top() - penWidth() );
+        r.setRight( r.right() + penWidth() );
+        r.setBottom( r.bottom() + penWidth() );
+
+        bitBlt( this, r.x(), r.y(), &buffer, r.x(), r.y(), r.width(), r.height() );
+    }
+}
+
+void Canvas::resizeEvent( TQResizeEvent *e )
+{
+    TQWidget::resizeEvent( e );
+
+    int w = width() > buffer.width() ?
+            width() : buffer.width();
+    int h = height() > buffer.height() ?
+            height() : buffer.height();
+
+    TQPixmap tmp( buffer );
+    buffer.resize( w, h );
+    buffer.fill( colorGroup().base() );
+    bitBlt( &buffer, 0, 0, &tmp, 0, 0, tmp.width(), tmp.height() );
+}
+
+void Canvas::paintEvent( TQPaintEvent *e )
+{
+    TQWidget::paintEvent( e );
+
+    TQMemArray<TQRect> rects = e->region().rects();
+    for ( uint i = 0; i < rects.count(); i++ ) {
+        TQRect r = rects[(int)i];
+        bitBlt( this, r.x(), r.y(), &buffer, r.x(), r.y(), r.width(), r.height() );
+    }
+}
+
+//------------------------------------------------------
+
+Scribble::Scribble( TQWidget *parent, const char *name )
+    : TQMainWindow( parent, name )
+{
+    canvas = new Canvas( this );
+    setCentralWidget( canvas );
+
+    TQToolBar *tools = new TQToolBar( this );
+
+    bSave = new TQToolButton( TQPixmap(), "Save", "Save as PNG image", this, SLOT( slotSave() ), tools );
+    bSave->setText( "Save as..." );
+
+    tools->addSeparator();
+
+    bPColor = new TQToolButton( TQPixmap(), "Choose Pen Color", "Choose Pen Color", this, SLOT( slotColor() ), tools );
+    bPColor->setText( "Choose Pen Color..." );
+
+    tools->addSeparator();
+
+    bPWidth = new TQSpinBox( 1, 20, 1, tools );
+    TQToolTip::add( bPWidth, "Choose Pen Width" );
+    connect( bPWidth, SIGNAL( valueChanged( int ) ), this, SLOT( slotWidth( int ) ) );
+    bPWidth->setValue( 3 );
+
+    tools->addSeparator();
+
+    bClear = new TQToolButton( TQPixmap(), "Clear Screen", "Clear Screen", this, SLOT( slotClear() ), tools );
+    bClear->setText( "Clear Screen" );
+}
+
+void Scribble::slotSave()
+{
+    TQPopupMenu *menu = new TQPopupMenu( 0 );
+    TQIntDict<TQString> formats;
+    formats.setAutoDelete( TRUE );
+
+    for ( unsigned int i = 0; i < TQImageIO::outputFormats().count(); i++ ) {
+        TQString str = TQString( TQImageIO::outputFormats().at( i ) );
+        formats.insert( menu->insertItem( TQString( "%1..." ).arg( str ) ), new TQString( str ) );
+    }
+
+    menu->setMouseTracking( TRUE );
+    int id = menu->exec( bSave->mapToGlobal( TQPoint( 0, bSave->height() + 1 ) ) );
+
+    if ( id != -1 ) {
+        TQString format = *formats[ id ];
+
+        TQString filename = TQFileDialog::getSaveFileName( TQString::null, TQString( "*.%1" ).arg( format.lower() ), this );
+        if ( !filename.isEmpty() )
+            canvas->save( filename, format );
+    }
+
+    delete menu;
+}
+
+void Scribble::slotColor()
+{
+    TQColor c = TQColorDialog::getColor( canvas->penColor(), this );
+    if ( c.isValid() )
+        canvas->setPenColor( c );
+}
+
+void Scribble::slotWidth( int w )
+{
+    canvas->setPenWidth( w );
+}
+
+void Scribble::slotClear()
+{
+    canvas->clearScreen();
+}
+

+ +

Main: +

/****************************************************************************
+** $Id: qt/main.cpp   3.3.8   edited Jan 11 14:37 $
+**
+** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for TQt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#include "scribble.h"
+#include <qapplication.h>
+
+
+int main( int argc, char **argv )
+{
+    TQApplication a( argc, argv );
+
+    Scribble scribble;
+
+    scribble.resize( 500, 350 );
+    scribble.setCaption("TQt Example - Scribble");
+    a.setMainWidget( &scribble );
+    if ( TQApplication::desktop()->width() > 550
+         && TQApplication::desktop()->height() > 366 )
+        scribble.show();
+    else
+        scribble.showMaximized();
+    return a.exec();
+}
+

+ +