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-rw-r--r--kdeui/kselect.cpp534
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diff --git a/kdeui/kselect.cpp b/kdeui/kselect.cpp
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+/* This file is part of the KDE libraries
+ Copyright (C) 1997 Martin Jones (mjones@kde.org)
+
+ 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 <qimage.h>
+#include <qpainter.h>
+#include <qdrawutil.h>
+#include <qstyle.h>
+#include <kimageeffect.h>
+#include "kselect.h"
+
+#define STORE_W 8
+#define STORE_W2 STORE_W * 2
+
+//-----------------------------------------------------------------------------
+/*
+ * 2D value selector.
+ * The contents of the selector are drawn by derived class.
+ */
+
+KXYSelector::KXYSelector( QWidget *parent, const char *name )
+ : QWidget( parent, name )
+{
+ xPos = 0;
+ yPos = 0;
+ minX = 0;
+ minY = 0;
+ maxX = 100;
+ maxY = 100;
+ store.setOptimization( QPixmap::BestOptim );
+ store.resize( STORE_W2, STORE_W2 );
+}
+
+
+KXYSelector::~KXYSelector()
+{}
+
+
+void KXYSelector::setRange( int _minX, int _minY, int _maxX, int _maxY )
+{
+ int w = style().pixelMetric(QStyle::PM_DefaultFrameWidth);
+ px = w;
+ py = w;
+ minX = _minX;
+ minY = _minY;
+ maxX = _maxX;
+ maxY = _maxY;
+}
+
+void KXYSelector::setXValue( int _xPos )
+{
+ setValues(_xPos, yPos);
+}
+
+void KXYSelector::setYValue( int _yPos )
+{
+ setValues(xPos, _yPos);
+}
+
+void KXYSelector::setValues( int _xPos, int _yPos )
+{
+ int w = style().pixelMetric(QStyle::PM_DefaultFrameWidth);
+ if (w < 5) w = 5;
+
+ xPos = _xPos;
+ yPos = _yPos;
+
+ if ( xPos > maxX )
+ xPos = maxX;
+ else if ( xPos < minX )
+ xPos = minX;
+
+ if ( yPos > maxY )
+ yPos = maxY;
+ else if ( yPos < minY )
+ yPos = minY;
+
+ int xp = w + (width() - 2 * w) * xPos / (maxX - minX);
+ int yp = height() - w - (height() - 2 * w) * yPos / (maxY - minY);
+
+ setPosition( xp, yp );
+}
+
+QRect KXYSelector::contentsRect() const
+{
+ int w = style().pixelMetric(QStyle::PM_DefaultFrameWidth);
+ if (w < 5) {
+ w = 5;
+ }
+ QRect contents(rect());
+ contents.addCoords(w, w, -w, -w);
+ return contents;
+}
+
+void KXYSelector::paintEvent( QPaintEvent *ev )
+{
+ QRect cursorRect( px - STORE_W, py - STORE_W, STORE_W2, STORE_W2);
+ QRect paintRect = ev->rect();
+ QRect borderRect = rect();
+
+ int w = style().pixelMetric(QStyle::PM_DefaultFrameWidth);
+ if (w < 5) {
+ w = 5 - w;
+ }
+ borderRect.addCoords(w, w, -w, -w);
+
+ QPainter painter;
+ painter.begin( this );
+
+ style().drawPrimitive(QStyle::PE_Panel, &painter,
+ borderRect, colorGroup(),
+ QStyle::Style_Sunken);
+
+ drawContents( &painter );
+ if (paintRect.contains(cursorRect))
+ {
+ bitBlt( &store, 0, 0, this, px - STORE_W, py - STORE_W,
+ STORE_W2, STORE_W2, CopyROP );
+ drawCursor( &painter, px, py );
+ }
+ else if (paintRect.intersects(cursorRect))
+ {
+ repaint( cursorRect, false);
+ }
+
+ painter.end();
+}
+
+void KXYSelector::mousePressEvent( QMouseEvent *e )
+{
+ mouseMoveEvent(e);
+}
+
+void KXYSelector::mouseMoveEvent( QMouseEvent *e )
+{
+ int xVal, yVal;
+
+ int w = style().pixelMetric(QStyle::PM_DefaultFrameWidth);
+ valuesFromPosition( e->pos().x() - w, e->pos().y() - w, xVal, yVal );
+
+ setValues( xVal, yVal );
+
+ emit valueChanged( xPos, yPos );
+}
+
+void KXYSelector::wheelEvent( QWheelEvent *e )
+{
+ if ( e->orientation() == Qt::Horizontal )
+ setValues( xValue() + e->delta()/120, yValue() );
+ else
+ setValues( xValue(), yValue() + e->delta()/120 );
+
+ emit valueChanged( xPos, yPos );
+}
+
+void KXYSelector::valuesFromPosition( int x, int y, int &xVal, int &yVal ) const
+{
+ int w = style().pixelMetric(QStyle::PM_DefaultFrameWidth);
+ if (w < 5) w = 5;
+ xVal = ( (maxX-minX) * (x-w) ) / ( width()-2*w );
+ yVal = maxY - ( ( (maxY-minY) * (y-w) ) / ( height()-2*w ) );
+
+ if ( xVal > maxX )
+ xVal = maxX;
+ else if ( xVal < minX )
+ xVal = minX;
+
+ if ( yVal > maxY )
+ yVal = maxY;
+ else if ( yVal < minY )
+ yVal = minY;
+}
+
+void KXYSelector::setPosition( int xp, int yp )
+{
+ int w = style().pixelMetric(QStyle::PM_DefaultFrameWidth);
+ if (w < 5) w = 5;
+ if ( xp < w )
+ xp = w;
+ else if ( xp > width() - w )
+ xp = width() - w;
+
+ if ( yp < w )
+ yp = w;
+ else if ( yp > height() - w )
+ yp = height() - w;
+
+ QPainter painter;
+ painter.begin( this );
+
+ bitBlt( this, px - STORE_W, py - STORE_W, &store, 0, 0,
+ STORE_W2, STORE_W2, CopyROP );
+ bitBlt( &store, 0, 0, this, xp - STORE_W, yp - STORE_W,
+ STORE_W2, STORE_W2, CopyROP );
+ drawCursor( &painter, xp, yp );
+ px = xp;
+ py = yp;
+
+ painter.end();
+}
+
+void KXYSelector::drawContents( QPainter * )
+{}
+
+
+void KXYSelector::drawCursor( QPainter *p, int xp, int yp )
+{
+ p->setPen( QPen( white ) );
+
+ p->drawLine( xp - 6, yp - 6, xp - 2, yp - 2 );
+ p->drawLine( xp - 6, yp + 6, xp - 2, yp + 2 );
+ p->drawLine( xp + 6, yp - 6, xp + 2, yp - 2 );
+ p->drawLine( xp + 6, yp + 6, xp + 2, yp + 2 );
+}
+
+//-----------------------------------------------------------------------------
+/*
+ * 1D value selector with contents drawn by derived class.
+ * See KColorDialog for example.
+ */
+
+
+KSelector::KSelector( QWidget *parent, const char *name )
+ : QWidget( parent, name ), QRangeControl()
+{
+ _orientation = Horizontal;
+ _indent = true;
+}
+
+KSelector::KSelector( Orientation o, QWidget *parent, const char *name )
+ : QWidget( parent, name ), QRangeControl()
+{
+ _orientation = o;
+ _indent = true;
+}
+
+
+KSelector::~KSelector()
+{}
+
+
+QRect KSelector::contentsRect() const
+{
+ int w = style().pixelMetric(QStyle::PM_DefaultFrameWidth);
+ int iw = (w < 5) ? 5 : w;
+ if ( orientation() == Vertical )
+ return QRect( w, iw, width() - w * 2 - 5, height() - 2 * iw );
+ else
+ return QRect( iw, w, width() - 2 * iw, height() - w * 2 - 5 );
+}
+
+void KSelector::paintEvent( QPaintEvent * )
+{
+ QPainter painter;
+ int w = style().pixelMetric(QStyle::PM_DefaultFrameWidth);
+ int iw = (w < 5) ? 5 : w;
+
+ painter.begin( this );
+
+ drawContents( &painter );
+
+ if ( indent() )
+ {
+ QRect r = rect();
+ if ( orientation() == Vertical )
+ r.addCoords(0, iw - w, -iw, w - iw);
+ else
+ r.addCoords(iw - w, 0, w - iw, -iw);
+ style().drawPrimitive(QStyle::PE_Panel, &painter,
+ r, colorGroup(),
+ QStyle::Style_Sunken);
+ }
+
+ QPoint pos = calcArrowPos( value() );
+ drawArrow( &painter, true, pos );
+
+ painter.end();
+}
+
+void KSelector::mousePressEvent( QMouseEvent *e )
+{
+ moveArrow( e->pos() );
+}
+
+void KSelector::mouseMoveEvent( QMouseEvent *e )
+{
+ moveArrow( e->pos() );
+}
+
+void KSelector::wheelEvent( QWheelEvent *e )
+{
+ int val = value() + e->delta()/120;
+ setValue( val );
+}
+
+void KSelector::valueChange()
+{
+ QPainter painter;
+ QPoint pos;
+
+ painter.begin( this );
+
+ pos = calcArrowPos( prevValue() );
+ drawArrow( &painter, false, pos );
+
+ pos = calcArrowPos( value() );
+ drawArrow( &painter, true, pos );
+
+ painter.end();
+
+ emit valueChanged( value() );
+}
+
+void KSelector::moveArrow( const QPoint &pos )
+{
+ int val;
+ int w = style().pixelMetric(QStyle::PM_DefaultFrameWidth);
+ int iw = (w < 5) ? 5 : w;
+
+ if ( orientation() == Vertical )
+ val = ( maxValue() - minValue() ) * (height()-pos.y()-5+w)
+ / (height()-iw*2) + minValue();
+ else
+ val = ( maxValue() - minValue() ) * (width()-pos.x()-5+w)
+ / (width()-iw*2) + minValue();
+
+ setValue( val );
+}
+
+QPoint KSelector::calcArrowPos( int val )
+{
+ QPoint p;
+
+ int w = style().pixelMetric(QStyle::PM_DefaultFrameWidth);
+ int iw = (w < 5) ? 5 : w;
+ if ( orientation() == Vertical )
+ {
+ p.setY( height() - ( (height()-2*iw) * val
+ / ( maxValue() - minValue() ) + 5 ) );
+ p.setX( width() - 5 );
+ }
+ else
+ {
+ p.setX( width() - ( (width()-2*iw) * val
+ / ( maxValue() - minValue() ) + 5 ) );
+ p.setY( height() - 5 );
+ }
+
+ return p;
+}
+
+void KSelector::drawContents( QPainter * )
+{}
+
+void KSelector::drawArrow( QPainter *painter, bool show, const QPoint &pos )
+{
+ if ( show )
+ {
+ QPointArray array(3);
+
+ painter->setPen( QPen() );
+ painter->setBrush( QBrush( colorGroup().buttonText() ) );
+ array.setPoint( 0, pos.x()+0, pos.y()+0 );
+ array.setPoint( 1, pos.x()+5, pos.y()+5 );
+ if ( orientation() == Vertical )
+ {
+ array.setPoint( 2, pos.x()+5, pos.y()-5 );
+ }
+ else
+ {
+ array.setPoint( 2, pos.x()-5, pos.y()+5 );
+ }
+
+ painter->drawPolygon( array );
+ }
+ else
+ {
+ if ( orientation() == Vertical )
+ {
+ repaint(pos.x(), pos.y()-5, 6, 11, true);
+ }
+ else
+ {
+ repaint(pos.x()-5, pos.y(), 11, 6, true);
+ }
+ }
+}
+
+//----------------------------------------------------------------------------
+
+KGradientSelector::KGradientSelector( QWidget *parent, const char *name )
+ : KSelector( parent, name )
+{
+ init();
+}
+
+
+KGradientSelector::KGradientSelector( Orientation o, QWidget *parent,
+ const char *name )
+ : KSelector( o, parent, name )
+{
+ init();
+}
+
+
+KGradientSelector::~KGradientSelector()
+{}
+
+
+void KGradientSelector::init()
+{
+ color1.setRgb( 0, 0, 0 );
+ color2.setRgb( 255, 255, 255 );
+
+ text1 = text2 = "";
+}
+
+
+void KGradientSelector::drawContents( QPainter *painter )
+{
+ QImage image( contentsRect().width(), contentsRect().height(), 32 );
+
+ QColor col;
+ float scale;
+
+ int redDiff = color2.red() - color1.red();
+ int greenDiff = color2.green() - color1.green();
+ int blueDiff = color2.blue() - color1.blue();
+
+ if ( orientation() == Vertical )
+ {
+ for ( int y = 0; y < image.height(); y++ )
+ {
+ scale = 1.0 * y / image.height();
+ col.setRgb( color1.red() + int(redDiff*scale),
+ color1.green() + int(greenDiff*scale),
+ color1.blue() + int(blueDiff*scale) );
+
+ unsigned int *p = (uint *) image.scanLine( y );
+ for ( int x = 0; x < image.width(); x++ )
+ *p++ = col.rgb();
+ }
+ }
+ else
+ {
+ unsigned int *p = (uint *) image.scanLine( 0 );
+
+ for ( int x = 0; x < image.width(); x++ )
+ {
+ scale = 1.0 * x / image.width();
+ col.setRgb( color1.red() + int(redDiff*scale),
+ color1.green() + int(greenDiff*scale),
+ color1.blue() + int(blueDiff*scale) );
+ *p++ = col.rgb();
+ }
+
+ for ( int y = 1; y < image.height(); y++ )
+ memcpy( image.scanLine( y ), image.scanLine( y - 1),
+ sizeof( unsigned int ) * image.width() );
+ }
+
+ QColor ditherPalette[8];
+
+ for ( int s = 0; s < 8; s++ )
+ ditherPalette[s].setRgb( color1.red() + redDiff * s / 8,
+ color1.green() + greenDiff * s / 8,
+ color1.blue() + blueDiff * s / 8 );
+
+ KImageEffect::dither( image, ditherPalette, 8 );
+
+ QPixmap p;
+ p.convertFromImage( image );
+
+ painter->drawPixmap( contentsRect().x(), contentsRect().y(), p );
+
+ if ( orientation() == Vertical )
+ {
+ int yPos = contentsRect().top() + painter->fontMetrics().ascent() + 2;
+ int xPos = contentsRect().left() + (contentsRect().width() -
+ painter->fontMetrics().width( text2 )) / 2;
+ QPen pen( color2 );
+ painter->setPen( pen );
+ painter->drawText( xPos, yPos, text2 );
+
+ yPos = contentsRect().bottom() - painter->fontMetrics().descent() - 2;
+ xPos = contentsRect().left() + (contentsRect().width() -
+ painter->fontMetrics().width( text1 )) / 2;
+ pen.setColor( color1 );
+ painter->setPen( pen );
+ painter->drawText( xPos, yPos, text1 );
+ }
+ else
+ {
+ int yPos = contentsRect().bottom()-painter->fontMetrics().descent()-2;
+
+ QPen pen( color2 );
+ painter->setPen( pen );
+ painter->drawText( contentsRect().left() + 2, yPos, text1 );
+
+ pen.setColor( color1 );
+ painter->setPen( pen );
+ painter->drawText( contentsRect().right() -
+ painter->fontMetrics().width( text2 ) - 2, yPos, text2 );
+ }
+}
+
+//-----------------------------------------------------------------------------
+
+void KXYSelector::virtual_hook( int, void* )
+{ /*BASE::virtual_hook( id, data );*/ }
+
+void KSelector::virtual_hook( int, void* )
+{ /*BASE::virtual_hook( id, data );*/ }
+
+void KGradientSelector::virtual_hook( int id, void* data )
+{ KSelector::virtual_hook( id, data ); }
+
+#include "kselect.moc"
+