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Diffstat (limited to 'kdeui/kselect.cpp')
| -rw-r--r-- | kdeui/kselect.cpp | 534 |
1 files changed, 534 insertions, 0 deletions
diff --git a/kdeui/kselect.cpp b/kdeui/kselect.cpp new file mode 100644 index 000000000..3795056e6 --- /dev/null +++ b/kdeui/kselect.cpp @@ -0,0 +1,534 @@ +/* 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" + |