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/* This file is part of the KDE project
Copyright (C) 2001, The Karbon Developers
Copyright (C) 2002, The Karbon Developers
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <tqlabel.h>
#include <tqframe.h>
#include <tqbitmap.h>
#include <kcolorbutton.h>
#include <kcombobox.h>
#include <klocale.h>
#include <tqpainter.h>
#include <kiconloader.h>
#include "vgradientwidget.h"
#include "vcolordlg.h"
#include "vfill.h"
#include "vkopainter.h"
#include "vcursor.h"
#define midPoint_width 7
#define midPoint_height 10
static unsigned char midPoint_bits[] = {
0x08, 0x08, 0x1c, 0x1c, 0x2a, 0x2a, 0x08, 0x08, 0x08, 0x08
};
#define colorStopBorder_width 11
#define colorStopBorder_height 11
static unsigned char colorStopBorder_bits[] = {
0x20, 0x00, 0x50, 0x00, 0x50, 0x00, 0x88, 0x00, 0x88, 0x00, 0x04, 0x01,
0x04, 0x01, 0x02, 0x02, 0x02, 0x02, 0x01, 0x04, 0xff, 0x07
};
#define colorStop_width 9
#define colorStop_height 10
static unsigned char colorStop_bits[] = {
0x00, 0x00, 0x10, 0x00, 0x10, 0x00, 0x38, 0x00, 0x38, 0x00, 0x7c, 0x00,
0x7c, 0x00, 0xfe, 0x00, 0xfe, 0x00, 0xff, 0x01
};
VGradientWidget::VGradientWidget( VGradient& gradient, TQWidget* parent, const char* name )
: TQWidget( parent, name ), m_gradient( &gradient )
{
setBackgroundMode( TQt::NoBackground );
setMinimumSize( 105, 35 );
} // VGradientWidget::VGradientWidget
VGradientWidget::~VGradientWidget()
{
} // VGradientWidget::~VGradientWidget
void VGradientWidget::paintColorStop( TQPainter& p, int x, VColor& color )
{
TQBitmap bitmap;
bitmap = TQBitmap( colorStop_width, colorStop_height, colorStop_bits, true );
bitmap.setMask( bitmap );
p.setPen( color );
p.drawPixmap( x - 4, 1, bitmap );
bitmap = TQBitmap( colorStopBorder_width, colorStopBorder_height, colorStopBorder_bits, true );
bitmap.setMask( bitmap );
p.setPen( TQt::black );
p.drawPixmap( x - 5, 1, bitmap );
} // VGradientWidget::paintColorStop
void VGradientWidget::paintMidPoint( TQPainter& p, int x )
{
TQBitmap bitmap( midPoint_width, midPoint_height, midPoint_bits, true );
bitmap.setMask( bitmap );
p.setPen( TQt::black );
p.drawPixmap( x - 3, 1, bitmap );
} // VGradientWidget::paintMidPoint
void VGradientWidget::paintEvent( TQPaintEvent* )
{
int w = width() - 4; // available width for gradient and points
int h = height() - 7; // available height for gradient and points
int ph = colorStopBorder_height + 2; // point marker height
int gh = h - ph; // gradient area height
TQPixmap pixmap( width(), height() );
VKoPainter gp( TQT_TQPAINTDEVICE(&pixmap), width(), height() );
gp.setRasterOp( TQt::XorROP );
VGradient gradient( *m_gradient );
gradient.setType( VGradient::linear );
gradient.setOrigin( KoPoint( 2, 2 ) );
gradient.setFocalPoint( KoPoint( 2, 2 ) );
gradient.setVector( KoPoint( 2 + w, 2 ) );
VFill fill;
KIconLoader il;
fill.pattern() = VPattern( il.iconPath( "karbon.png", KIcon::Small ) );
fill.setType( VFill::patt );
gp.setBrush( fill );
gp.drawRect( KoRect( 2, 2, w, gh ) );
fill.gradient() = gradient;
fill.setType( VFill::grad );
gp.setBrush( fill );
gp.drawRect( KoRect( 2, 2, w, gh ) );
gp.end();
TQPainter p( &pixmap );
p.setPen( tqcolorGroup().light() );
// light frame around widget
p.moveTo( 1, height() - 1 );
p.lineTo( 1, 1 );
p.lineTo( width() - 1, 1 );
p.lineTo( width() - 1, height() - 1 );
p.lineTo( 1, height() - 1 );
// light line between gradient and point area
p.moveTo( 1, 3 + gh );
p.lineTo( width() - 1, 3 + gh );
p.setPen( tqcolorGroup().dark() );
// left-top frame around widget
p.moveTo( 0, height() - 1 );
p.lineTo( 0, 0 );
p.lineTo( width() - 1, 0 );
// right-bottom from around gradient
p.moveTo( width() - 2, 2 );
p.lineTo( width() - 2, 2 + gh );
p.lineTo( 2, 2 + gh );
// upper line around point area
p.moveTo( 1, height() - 3 - ph );
p.lineTo( width() - 1, height() - 3 - ph );
// right-bottom line around point area
p.moveTo( width() - 2, height() - ph - 1 );
p.lineTo( width() - 2, height() - 2 );
p.lineTo( 2, height() - 2 );
m_pntArea.setRect( 2, height() - ph - 2, w, ph );
// clear point area
p.fillRect( m_pntArea.x(), m_pntArea.y(), m_pntArea.width(), m_pntArea.height(), tqcolorGroup().background() );
p.setClipRect( m_pntArea.x(), m_pntArea.y(), m_pntArea.width(), m_pntArea.height() );
p.translate( m_pntArea.x(), m_pntArea.y() );
TQPtrList<VColorStop>& colorStops = m_gradient->m_colorStops;
if( colorStops.count() > 1 )
{
VColorStop* stop, *nextstop;
for( stop = colorStops.first(), nextstop = colorStops.next();
nextstop; stop = nextstop, nextstop = colorStops.next() )
{
paintColorStop( p, (int)( stop->rampPoint * m_pntArea.width() ), stop->color );
paintMidPoint( p, (int)(( stop->rampPoint + ( nextstop->rampPoint - stop->rampPoint ) * stop->midPoint ) * m_pntArea.width() ) );
}
paintColorStop( p, int( stop->rampPoint * w ), stop->color );
}
p.end();
bitBlt( this, 0, 0, &pixmap, 0, 0, width(), height() );
} // VGradientWidget::paintEvent
void VGradientWidget::mousePressEvent( TQMouseEvent* e )
{
if( ! m_pntArea.contains( e->x(), e->y() ) )
return;
TQPtrList<VColorStop>& colorStops = m_gradient->m_colorStops;
currentPoint = 0;
int x = e->x() - m_pntArea.left();
int i = colorStops.count() - 1;
VColorStop *stop, *nextstop = 0;
for( stop = colorStops.last(); i >= 0; i--, stop = colorStops.prev() )
{
int r = int( stop->rampPoint * m_pntArea.width() );
if( nextstop )
{
int m = int( ( stop->rampPoint + ( nextstop->rampPoint - stop->rampPoint ) * stop->midPoint ) * m_pntArea.width() );
if( ( x > m - 5 ) && ( x < m + 5 ) )
{
// found mid point at position
currentPoint = 2 * i + 2;
if( e->button() == Qt::LeftButton )
setCursor( VCursor::horzMove() );
return;
}
}
if( ( x > r - 5 ) && ( x < r + 5 ) )
{
// found ramp point at position
currentPoint = 2 * i + 1;
if( e->button() == Qt::LeftButton )
setCursor( VCursor::horzMove() );
return;
}
nextstop = stop;
}
} // VGradientWidget::mousePressEvent
void VGradientWidget::mouseReleaseEvent( TQMouseEvent* e )
{
if( e->button() == Qt::RightButton && currentPoint )
{
if( m_pntArea.contains( e->x(), e->y() ) && ( currentPoint % 2 == 1 ) )
{
int x = e->x() - m_pntArea.left();
// check if we are still above the actual ramp point
int r = int( m_gradient->m_colorStops.at( int(0.5 * currentPoint) )->rampPoint * m_pntArea.width() );
if( ( x > r - 5 ) && ( x < r + 5 ) )
{
m_gradient->m_colorStops.remove( int(0.5 * currentPoint) );
update();
emit changed();
}
}
}
setCursor( TQCursor( TQt::ArrowCursor ) );
} // VGradientWidget::mouseReleaseEvent
void VGradientWidget::mouseDoubleClickEvent( TQMouseEvent* e )
{
if( ! m_pntArea.contains( e->x(), e->y() ) )
return;
if( e->button() != Qt::LeftButton )
return;
if( currentPoint % 2 == 1 )
{
// ramp point hit -> change color
VColorDlg* d = new VColorDlg( m_gradient->m_colorStops.at( currentPoint / 2 )->color, this->tqtopLevelWidget() );
if( d->exec() == TQDialog::Accepted )
{
m_gradient->m_colorStops.at( currentPoint / 2 )->color = d->Color();
update();
emit changed();
}
delete d;
}
else if( currentPoint == 0 )
{
// now point hit -> create new color stop
VColorDlg* d = new VColorDlg( m_gradient->m_colorStops.at( 0 )->color, this->tqtopLevelWidget() );
if( d->exec() == TQDialog::Accepted )
{
m_gradient->addStop( d->Color(), (float)( e->x() - 2 ) / ( m_pntArea.width() ), 0.5 );
update();
emit changed();
}
delete d;
}
} // VGradientWidget::mouseDoubleClickEvent
void VGradientWidget::mouseMoveEvent( TQMouseEvent* e )
{
if( e->state() & Qt::RightButton )
return;
TQPtrList<VColorStop>& colorStops = m_gradient->m_colorStops;
if( currentPoint >= colorStops.count() * 2 )
return;
int x = e->x() - m_pntArea.left();
if( currentPoint % 2 == 1 )
{
// move ramp point
int actRP = int( 0.5 * ( currentPoint - 1 ) );
int prevRP = actRP - 1;
int nextRP = int( 0.5 * ( currentPoint + 1 ) );
// Clip the color stop between to others.
x = kMin( x, ( actRP < int( colorStops.count() - 1 ) ) ? int( colorStops.at( nextRP )->rampPoint * m_pntArea.width() ) : m_pntArea.width() );
x = kMax( x, ( actRP > 0 ) ? int( colorStops.at( prevRP )->rampPoint * m_pntArea.width() ) : 0 );
colorStops.at( actRP )->rampPoint = (float)( x ) / m_pntArea.width();
update();
emit changed();
}
else if( currentPoint > 0 )
{
// move mid point
int prevRP = int( 0.5 * ( currentPoint - 1 ) );
int nextRP = int( 0.5 * ( currentPoint + 1 ) );
// Clip the mid point between to ramp points.
x = kMin( x, int( colorStops.at( nextRP )->rampPoint * m_pntArea.width() ) );
x = kMax( x, int( colorStops.at( prevRP )->rampPoint * m_pntArea.width() ) );
colorStops.at( prevRP )->midPoint = ( (float)( x ) / m_pntArea.width() - ( colorStops.at( prevRP )->rampPoint ) ) / ( colorStops.at( nextRP )->rampPoint - colorStops.at( prevRP )->rampPoint );
update();
emit changed();
}
} // VGradientWidget::mouseMoveEvent
#include "vgradientwidget.moc"
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