From bd0f3345a938b35ce6a12f6150373b0955b8dd12 Mon Sep 17 00:00:00 2001 From: Timothy Pearson Date: Sun, 10 Jul 2011 15:24:15 -0500 Subject: Add Qt3 development HEAD version --- examples/scribble/main.cpp | 29 +++++++ examples/scribble/scribble.cpp | 187 +++++++++++++++++++++++++++++++++++++++++ examples/scribble/scribble.doc | 30 +++++++ examples/scribble/scribble.h | 87 +++++++++++++++++++ examples/scribble/scribble.pro | 11 +++ 5 files changed, 344 insertions(+) create mode 100644 examples/scribble/main.cpp create mode 100644 examples/scribble/scribble.cpp create mode 100644 examples/scribble/scribble.doc create mode 100644 examples/scribble/scribble.h create mode 100644 examples/scribble/scribble.pro (limited to 'examples/scribble') diff --git a/examples/scribble/main.cpp b/examples/scribble/main.cpp new file mode 100644 index 0000000..9f347fe --- /dev/null +++ b/examples/scribble/main.cpp @@ -0,0 +1,29 @@ +/**************************************************************************** +** +** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved. +** +** This file is part of an example program for Qt. This example +** program may be used, distributed and modified without limitation. +** +*****************************************************************************/ + +#include "scribble.h" +#include + + +int main( int argc, char **argv ) +{ + QApplication a( argc, argv ); + + Scribble scribble; + + scribble.resize( 500, 350 ); + scribble.setCaption("Qt Example - Scribble"); + a.setMainWidget( &scribble ); + if ( QApplication::desktop()->width() > 550 + && QApplication::desktop()->height() > 366 ) + scribble.show(); + else + scribble.showMaximized(); + return a.exec(); +} diff --git a/examples/scribble/scribble.cpp b/examples/scribble/scribble.cpp new file mode 100644 index 0000000..412a892 --- /dev/null +++ b/examples/scribble/scribble.cpp @@ -0,0 +1,187 @@ +/**************************************************************************** +** +** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved. +** +** This file is part of an example program for Qt. This example +** program may be used, distributed and modified without limitation. +** +*****************************************************************************/ + +#include "scribble.h" + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +const bool no_writing = FALSE; + +Canvas::Canvas( QWidget *parent, const char *name ) + : QWidget( parent, name, WStaticContents ), pen( Qt::red, 3 ), polyline(3), + mousePressed( FALSE ), buffer( width(), height() ) +{ + + if ((qApp->argc() > 0) && !buffer.load(qApp->argv()[1])) + buffer.fill( colorGroup().base() ); + setBackgroundMode( QWidget::PaletteBase ); +#ifndef QT_NO_CURSOR + setCursor( Qt::crossCursor ); +#endif +} + +void Canvas::save( const QString &filename, const QString &format ) +{ + if ( !no_writing ) + buffer.save( filename, format.upper() ); +} + +void Canvas::clearScreen() +{ + buffer.fill( colorGroup().base() ); + repaint( FALSE ); +} + +void Canvas::mousePressEvent( QMouseEvent *e ) +{ + mousePressed = TRUE; + polyline[2] = polyline[1] = polyline[0] = e->pos(); +} + +void Canvas::mouseReleaseEvent( QMouseEvent * ) +{ + mousePressed = FALSE; +} + +void Canvas::mouseMoveEvent( QMouseEvent *e ) +{ + if ( mousePressed ) { + QPainter painter; + painter.begin( &buffer ); + painter.setPen( pen ); + polyline[2] = polyline[1]; + polyline[1] = polyline[0]; + polyline[0] = e->pos(); + painter.drawPolyline( polyline ); + painter.end(); + + QRect 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( QResizeEvent *e ) +{ + QWidget::resizeEvent( e ); + + int w = width() > buffer.width() ? + width() : buffer.width(); + int h = height() > buffer.height() ? + height() : buffer.height(); + + QPixmap tmp( buffer ); + buffer.resize( w, h ); + buffer.fill( colorGroup().base() ); + bitBlt( &buffer, 0, 0, &tmp, 0, 0, tmp.width(), tmp.height() ); +} + +void Canvas::paintEvent( QPaintEvent *e ) +{ + QWidget::paintEvent( e ); + + QMemArray rects = e->region().rects(); + for ( uint i = 0; i < rects.count(); i++ ) { + QRect r = rects[(int)i]; + bitBlt( this, r.x(), r.y(), &buffer, r.x(), r.y(), r.width(), r.height() ); + } +} + +//------------------------------------------------------ + +Scribble::Scribble( QWidget *parent, const char *name ) + : QMainWindow( parent, name ) +{ + canvas = new Canvas( this ); + setCentralWidget( canvas ); + + QToolBar *tools = new QToolBar( this ); + + bSave = new QToolButton( QPixmap(), "Save", "Save as PNG image", this, SLOT( slotSave() ), tools ); + bSave->setText( "Save as..." ); + + tools->addSeparator(); + + bPColor = new QToolButton( QPixmap(), "Choose Pen Color", "Choose Pen Color", this, SLOT( slotColor() ), tools ); + bPColor->setText( "Choose Pen Color..." ); + + tools->addSeparator(); + + bPWidth = new QSpinBox( 1, 20, 1, tools ); + QToolTip::add( bPWidth, "Choose Pen Width" ); + connect( bPWidth, SIGNAL( valueChanged( int ) ), this, SLOT( slotWidth( int ) ) ); + bPWidth->setValue( 3 ); + + tools->addSeparator(); + + bClear = new QToolButton( QPixmap(), "Clear Screen", "Clear Screen", this, SLOT( slotClear() ), tools ); + bClear->setText( "Clear Screen" ); +} + +void Scribble::slotSave() +{ + QPopupMenu *menu = new QPopupMenu( 0 ); + QIntDict formats; + formats.setAutoDelete( TRUE ); + + for ( unsigned int i = 0; i < QImageIO::outputFormats().count(); i++ ) { + QString str = QString( QImageIO::outputFormats().at( i ) ); + formats.insert( menu->insertItem( QString( "%1..." ).arg( str ) ), new QString( str ) ); + } + + menu->setMouseTracking( TRUE ); + int id = menu->exec( bSave->mapToGlobal( QPoint( 0, bSave->height() + 1 ) ) ); + + if ( id != -1 ) { + QString format = *formats[ id ]; + + QString filename = QFileDialog::getSaveFileName( QString::null, QString( "*.%1" ).arg( format.lower() ), this ); + if ( !filename.isEmpty() ) + canvas->save( filename, format ); + } + + delete menu; +} + +void Scribble::slotColor() +{ + QColor c = QColorDialog::getColor( canvas->penColor(), this ); + if ( c.isValid() ) + canvas->setPenColor( c ); +} + +void Scribble::slotWidth( int w ) +{ + canvas->setPenWidth( w ); +} + +void Scribble::slotClear() +{ + canvas->clearScreen(); +} diff --git a/examples/scribble/scribble.doc b/examples/scribble/scribble.doc new file mode 100644 index 0000000..6763df2 --- /dev/null +++ b/examples/scribble/scribble.doc @@ -0,0 +1,30 @@ + +/* +*/ +/*! \page scribble-example.html + + \ingroup examples + \title 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: + + \include scribble/scribble.h + +
+ + Implementation: + + \include scribble/scribble.cpp + +
+ + Main: + + \include scribble/main.cpp +*/ + diff --git a/examples/scribble/scribble.h b/examples/scribble/scribble.h new file mode 100644 index 0000000..2b38a61 --- /dev/null +++ b/examples/scribble/scribble.h @@ -0,0 +1,87 @@ +/**************************************************************************** +** +** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved. +** +** This file is part of an example program for Qt. This example +** program may be used, distributed and modified without limitation. +** +*****************************************************************************/ + +#ifndef SCRIBBLE_H +#define SCRIBBLE_H + +#include +#include +#include +#include +#include +#include +#include + +class QMouseEvent; +class QResizeEvent; +class QPaintEvent; +class QToolButton; +class QSpinBox; + +class Canvas : public QWidget +{ + Q_OBJECT + +public: + Canvas( QWidget *parent = 0, const char *name = 0 ); + + void setPenColor( const QColor &c ) + { pen.setColor( c ); } + + void setPenWidth( int w ) + { pen.setWidth( w ); } + + QColor penColor() + { return pen.color(); } + + int penWidth() + { return pen.width(); } + + void save( const QString &filename, const QString &format ); + + void clearScreen(); + +protected: + void mousePressEvent( QMouseEvent *e ); + void mouseReleaseEvent( QMouseEvent *e ); + void mouseMoveEvent( QMouseEvent *e ); + void resizeEvent( QResizeEvent *e ); + void paintEvent( QPaintEvent *e ); + + QPen pen; + QPointArray polyline; + + bool mousePressed; + + QPixmap buffer; + +}; + +class Scribble : public QMainWindow +{ + Q_OBJECT + +public: + Scribble( QWidget *parent = 0, const char *name = 0 ); + +protected: + Canvas* canvas; + + QSpinBox *bPWidth; + QToolButton *bPColor, *bSave, *bClear; + +protected slots: + void slotSave(); + void slotColor(); + void slotWidth( int ); + void slotClear(); + +}; + +#endif diff --git a/examples/scribble/scribble.pro b/examples/scribble/scribble.pro new file mode 100644 index 0000000..35304c6 --- /dev/null +++ b/examples/scribble/scribble.pro @@ -0,0 +1,11 @@ +TEMPLATE = app +TARGET = scribble + +CONFIG += qt warn_on release +DEPENDPATH = ../../include + +REQUIRES = full-config + +HEADERS = scribble.h +SOURCES = main.cpp \ + scribble.cpp -- cgit v1.2.1