Mega Code Archive
Draw text
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Foundations of Qt Development\Chapter07\text\main.cpp
/*
* Copyright (c) 2006-2007, Johan Thelin
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of APress nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <QApplication>
#include <QPixmap>
#include <QPainter>
#include <QTextDocument>
int main( int argc, char **argv )
{
QApplication app( argc, argv );
QPixmap pixmap( 200, 330 );
pixmap.fill( Qt::white );
QPainter painter( &pixmap );
painter.setPen( Qt::black );
QPoint point = QPoint( 10, 20 );
painter.drawText( point, "You can draw text from a point..." );
painter.drawLine( point+QPoint(-5, 0), point+QPoint(5, 0) );
painter.drawLine( point+QPoint(0, -5), point+QPoint(0, 5) );
QRect rect = QRect(10, 30, 180, 20);
painter.drawText( rect, Qt::AlignCenter,
"...or you can draw it inside a rectangle." );
painter.drawRect( rect );
rect.translate( 0, 30 );
QFont font = QApplication::font();
font.setPixelSize( rect.height() );
painter.setFont( font );
painter.drawText( rect, Qt::AlignRight, "Right." );
painter.drawText( rect, Qt::AlignLeft, "Left." );
painter.drawRect( rect );
rect.translate( 0, rect.height()+10 );
rect.setHeight( QFontMetrics( font ).height() );
painter.drawText( rect, Qt::AlignRight, "Right." );
painter.drawText( rect, Qt::AlignLeft, "Left." );
painter.drawRect( rect );
QTextDocument doc;
doc.setHtml( "<p>A QTextDocument can be used to present formatted text "
"in a nice way.</p>"
"<p align=center>It can be <b>formatted</b> "
"<font size=+2>in</font> <i>different</i> ways.</p>"
"<p>The text can be really long and contain many "
"paragraphs. It is properly wrapped and such...</p>" );
rect.translate( 0, rect.height()+10 );
rect.setHeight( 160 );
doc.setTextWidth( rect.width() );
painter.save();
painter.translate( rect.topLeft() );
doc.drawContents( &painter, rect.translated( -rect.topLeft() ) );
painter.restore();
painter.drawRect( rect );
rect.translate( 0, 160 );
rect.setHeight( doc.size().height()-160 );
painter.setBrush( Qt::gray );
painter.drawRect( rect );
pixmap.save( "text.png" );
return 0;
}
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