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author | toma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da> | 2009-11-25 17:56:58 +0000 |
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committer | toma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da> | 2009-11-25 17:56:58 +0000 |
commit | ce4a32fe52ef09d8f5ff1dd22c001110902b60a2 (patch) | |
tree | 5ac38a06f3dde268dc7927dc155896926aaf7012 /kmdi/test/hello.cpp | |
download | tdelibs-ce4a32fe52ef09d8f5ff1dd22c001110902b60a2.tar.gz tdelibs-ce4a32fe52ef09d8f5ff1dd22c001110902b60a2.zip |
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923
git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
Diffstat (limited to 'kmdi/test/hello.cpp')
-rw-r--r-- | kmdi/test/hello.cpp | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/kmdi/test/hello.cpp b/kmdi/test/hello.cpp new file mode 100644 index 000000000..f3a10f65c --- /dev/null +++ b/kmdi/test/hello.cpp @@ -0,0 +1,104 @@ +/**************************************************************************** +** $Id$ +** +** Copyright (C) 1992-1999 Troll Tech AS. 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 "hello.h" +#include <qpushbutton.h> +#include <qtimer.h> +#include <qpainter.h> +#include <qpixmap.h> + +/* + Constructs a Hello widget. Starts a 40 ms animation timer. +*/ + +Hello::Hello( const char *title, const char *text, QWidget *parentWidget ) + : KMdiChildView(title, parentWidget), t(text), b(0) +{ + QTimer *timer = new QTimer(this); + QObject::connect( timer, SIGNAL(timeout()), SLOT(animate()) ); + timer->start( 40 ); + + resize( 260, 130 ); +} + + +/* + This private slot is called each time the timer fires. +*/ + +void Hello::animate() +{ + b = (b + 1) & 15; + repaint( false ); +} + + +/* + Handles mouse button release events for the Hello widget. + + We emit the clicked() signal when the mouse is released inside + the widget. +*/ + +void Hello::mouseReleaseEvent( QMouseEvent *e ) +{ + if ( rect().contains( e->pos() ) ) + emit clicked(); +} + + +/* + Handles paint events for the Hello widget. + + Flicker-free update. The text is first drawn in the pixmap and the + pixmap is then blt'ed to the screen. +*/ + +void Hello::paintEvent( QPaintEvent * ) +{ + static int sin_tbl[16] = { + 0, 38, 71, 92, 100, 92, 71, 38, 0, -38, -71, -92, -100, -92, -71, -38}; + + if ( t.isEmpty() ) + return; + + // 1: Compute some sizes, positions etc. + QFontMetrics fm = fontMetrics(); + int w = fm.width(t) + 20; + int h = fm.height() * 2; + int pmx = width()/2 - w/2; + int pmy = height()/2 - h/2; + + // 2: Create the pixmap and fill it with the widget's background + QPixmap pm( w, h ); + pm.fill( this, pmx, pmy ); + + // 3: Paint the pixmap. Cool wave effect + QPainter p; + int x = 10; + int y = h/2 + fm.descent(); + int i = 0; + p.begin( &pm ); + p.setFont( font() ); + while ( !t[i].isNull() ) { + int i16 = (b+i) & 15; + p.setPen( QColor((15-i16)*16,255,255,QColor::Hsv) ); + p.drawText( x, y-sin_tbl[i16]*h/800, t.mid(i,1), 1 ); + x += fm.width( t[i] ); + i++; + } + p.end(); + + // 4: Copy the pixmap to the Hello widget + bitBlt( this, pmx, pmy, &pm ); +} + +#include "hello.moc" + |