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