skeleton and the start of libopie2, please read README, ROADMAP and STATUS and comment...

1 files changed, 716 insertions, 0 deletions

diff --git a/libopie2/opieui/oselector.cpp b/libopie2/opieui/oselector.cpp
new file mode 100644
index 0000000..ec5af6b
--- a/dev/null
+++ b/libopie2/opieui/oselector.cpp
@@ -0,0 +1,716 @@
+/* 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., 59 Temple Place - Suite 330,
+    Boston, MA 02111-1307, USA.
+*/
+
+/* QT */
+
+#include <qimage.h>
+#include <qpainter.h>
+#include <qdrawutil.h>
+
+/* OPIE */
+
+#include <opie2/oimageeffect.h>
+#include <opie2/oselector.h>
+
+#define STORE_W 8
+#define STORE_W2 STORE_W * 2
+
+//-----------------------------------------------------------------------------
+/*
+ * 2D value selector.
+ * The contents of the selector are drawn by derived class.
+ */
+
+OXYSelector::OXYSelector( 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 );
+}
+
+
+OXYSelector::~OXYSelector()
+{}
+
+
+void OXYSelector::setRange( int _minX, int _minY, int _maxX, int _maxY )
+{
+        px = 2;
+        py = 2;
+        minX = _minX;
+        minY = _minY;
+        maxX = _maxX;
+        maxY = _maxY;
+}
+
+void OXYSelector::setValues( int _xPos, int _yPos )
+{
+        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 = 2 + (width() - 4) * xPos / (maxX - minX);
+        int yp = height() - 2 - (height() - 4) * yPos / (maxY - minY);
+
+        setPosition( xp, yp );
+}
+
+QRect OXYSelector::contentsRect() const
+{
+        return QRect( 2, 2, width()-4, height()-4 );
+}
+
+void OXYSelector::paintEvent( QPaintEvent *ev )
+{
+        QRect cursorRect( px - STORE_W, py - STORE_W, STORE_W2, STORE_W2);
+        QRect paintRect = ev->rect();
+
+        QPainter painter;
+        painter.begin( this );
+
+        QBrush brush;
+        qDrawShadePanel( &painter, 0, 0, width(), height(), colorGroup(),
+                        TRUE, 2, &brush );
+
+        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 OXYSelector::mousePressEvent( QMouseEvent *e )
+{
+    int xVal, yVal;
+    valuesFromPosition( e->pos().x() - 2, e->pos().y() - 2, xVal, yVal );
+    setValues( xVal, yVal );
+
+    emit valueChanged( xPos, yPos );
+}
+
+void OXYSelector::mouseMoveEvent( QMouseEvent *e )
+{
+    int xVal, yVal;
+    valuesFromPosition( e->pos().x() - 2, e->pos().y() - 2, xVal, yVal );
+    setValues( xVal, yVal );
+
+    emit valueChanged( xPos, yPos );
+}
+
+void OXYSelector::wheelEvent( QWheelEvent *e )
+{
+    #if QT_VERSION > 290
+    if ( e->orientation() == Qt::Horizontal )
+        setValues( xValue() + e->delta()/120, yValue() );
+    else
+        setValues( xValue(), yValue() + e->delta()/120 );
+
+    emit valueChanged( xPos, yPos );
+    #endif
+}
+
+void OXYSelector::valuesFromPosition( int x, int y, int &xVal, int &yVal ) const
+{
+    xVal = ( (maxX-minX) * (x-2) ) / ( width()-4 );
+    yVal = maxY - ( ( (maxY-minY) * (y-2) ) / ( height()-4 ) );
+
+    if ( xVal > maxX )
+        xVal = maxX;
+    else if ( xVal < minX )
+        xVal = minX;
+
+    if ( yVal > maxY )
+        yVal = maxY;
+    else if ( yVal < minY )
+        yVal = minY;
+}
+
+void OXYSelector::setPosition( int xp, int yp )
+{
+    if ( xp < 2 )
+        xp = 2;
+    else if ( xp > width() - 2 )
+        xp = width() - 2;
+
+    if ( yp < 2 )
+        yp = 2;
+    else if ( yp > height() - 2 )
+        yp = height() - 2;
+
+    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 OXYSelector::drawContents( QPainter * )
+{}
+
+
+void OXYSelector::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 OColorDialog for example.
+ */
+
+
+OSelector::OSelector( QWidget *parent, const char *name )
+        : QWidget( parent, name ), QRangeControl()
+{
+        _orientation = Horizontal;
+        _indent = TRUE;
+}
+
+OSelector::OSelector( Orientation o, QWidget *parent, const char *name )
+        : QWidget( parent, name ), QRangeControl()
+{
+        _orientation = o;
+        _indent = TRUE;
+}
+
+
+OSelector::~OSelector()
+{}
+
+
+QRect OSelector::contentsRect() const
+{
+        if ( orientation() == Vertical )
+                return QRect( 2, 5, width()-9, height()-10 );
+        else
+                return QRect( 5, 2, width()-10, height()-9 );
+}
+
+void OSelector::paintEvent( QPaintEvent * )
+{
+        QPainter painter;
+
+        painter.begin( this );
+
+        drawContents( &painter );
+
+        QBrush brush;
+
+        if ( indent() )
+        {
+                if ( orientation() == Vertical )
+                        qDrawShadePanel( &painter, 0, 3, width()-5, height()-6,
+                                colorGroup(), TRUE, 2, &brush );
+                else
+                        qDrawShadePanel( &painter, 3, 0, width()-6, height()-5,
+                                colorGroup(), TRUE, 2, &brush );
+        }
+
+        QPoint pos = calcArrowPos( value() );
+        drawArrow( &painter, TRUE, pos );   
+
+        painter.end();
+}
+
+void OSelector::mousePressEvent( QMouseEvent *e )
+{
+        moveArrow( e->pos() );
+}
+
+void OSelector::mouseMoveEvent( QMouseEvent *e )
+{
+        moveArrow( e->pos() );
+}
+
+void OSelector::wheelEvent( QWheelEvent *e )
+{
+        int val = value() + e->delta()/120;
+        emit valueChanged( val );
+        setValue( val );
+}
+
+void OSelector::valueChange()
+{
+        QPainter painter;
+        QPoint pos;
+
+        painter.begin( this );
+
+        pos = calcArrowPos( prevValue() );
+        drawArrow( &painter, FALSE, pos );   
+
+        pos = calcArrowPos( value() );
+        drawArrow( &painter, TRUE, pos );   
+
+        painter.end();
+}
+
+void OSelector::moveArrow( const QPoint &pos )
+{
+        int val;
+
+        if ( orientation() == Vertical )
+                val = ( maxValue() - minValue() ) * (height()-pos.y()-3)
+                                / (height()-10) + minValue();
+        else
+                val = ( maxValue() - minValue() ) * (width()-pos.x()-3)
+                                / (width()-10) + minValue();
+
+        if ( val > maxValue() )
+                val = maxValue();
+        if ( val < minValue() )
+                val = minValue();
+
+        emit valueChanged( val );
+        setValue( val );
+}
+
+QPoint OSelector::calcArrowPos( int val )
+{
+        QPoint p;
+
+        if ( orientation() == Vertical )
+        {
+                p.setY( height() - ( (height()-10) * val
+                                / ( maxValue() - minValue() ) + 5 ) );
+                p.setX( width() - 5 );
+        }
+        else
+        {
+                p.setX( width() - ( (width()-10) * val
+                                / ( maxValue() - minValue() ) + 5 ) );
+                p.setY( height() - 5 );
+        }
+
+        return p;
+}
+
+void OSelector::drawContents( QPainter * )
+{}
+
+void OSelector::drawArrow( QPainter *painter, bool show, const QPoint &pos )
+{
+  if ( show )
+  {
+    QPointArray array(3);
+
+    painter->setPen( QPen() );
+    painter->setBrush( QBrush( colorGroup().buttonText() ) );
+    if ( orientation() == Vertical )
+    {
+      array.setPoint( 0, pos.x()+0, pos.y()+0 );
+      array.setPoint( 1, pos.x()+5, pos.y()+5 );
+      array.setPoint( 2, pos.x()+5, pos.y()-5 );
+    }
+    else
+    {
+      array.setPoint( 0, pos.x()+0, pos.y()+0 );
+      array.setPoint( 1, pos.x()+5, pos.y()+5 );
+      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);
+    }
+  }
+}
+
+//----------------------------------------------------------------------------
+
+OGradientSelector::OGradientSelector( QWidget *parent, const char *name )
+    : OSelector( parent, name )
+{
+    init();
+}
+
+
+OGradientSelector::OGradientSelector( Orientation o, QWidget *parent,
+                const char *name )
+        : OSelector( o, parent, name )
+{
+    init();
+}
+
+
+OGradientSelector::~OGradientSelector()
+{}
+
+
+void OGradientSelector::init()
+{
+    color1.setRgb( 0, 0, 0 );
+    color2.setRgb( 255, 255, 255 );
+    
+    text1 = text2 = "";
+}
+
+
+void OGradientSelector::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 );
+
+        OImageEffect::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 );
+        }
+}
+
+//-----------------------------------------------------------------------------
+
+static QColor *standardPalette = 0;
+
+#define STANDARD_PAL_SIZE 17
+
+OColor::OColor()
+: QColor()
+{
+  r = 0; g = 0; b = 0; h = 0; s = 0; v = 0;
+};
+
+OColor::OColor( const OColor &col)
+: QColor( col )
+{
+  h = col.h; s = col.s; v = col.v;
+  r = col.r; g = col.g; b = col.b;
+};
+
+OColor::OColor( const QColor &col)
+: QColor( col )
+{
+  QColor::rgb(&r, &g, &b);
+  QColor::hsv(&h, &s, &v);
+};
+
+bool OColor::operator==(const OColor& col) const
+{
+  return (h == col.h) && (s == col.s) && (v == col.v) &&
+         (r == col.r) && (g == col.g) && (b == col.b);
+}
+
+OColor& OColor::operator=(const OColor& col)
+{
+  *(QColor *)this = col;
+  h = col.h; s = col.s; v = col.v;
+  r = col.r; g = col.g; b = col.b;
+  return *this;
+}
+
+void
+OColor::setHsv(int _h, int _s, int _v)
+{
+  h = _h; s = _s; v = _v;
+  QColor::setHsv(h, s, v);
+  QColor::rgb(&r, &g, &b);
+};
+
+void
+OColor::setRgb(int _r, int _g, int _b)
+{
+  r = _r; g = _g; b = _b;
+  QColor::setRgb(r, g, b);
+  QColor::hsv(&h, &s, &v);
+}
+
+void
+OColor::rgb(int *_r, int *_g, int *_b) const
+{
+  *_r = r; *_g = g; *_b = b;
+}
+
+void
+OColor::hsv(int *_h, int *_s, int *_v) const
+{
+  *_h = h; *_s = s; *_v = v;
+}
+
+static void createStandardPalette()
+{
+    if ( standardPalette )
+        return;
+
+    standardPalette = new QColor[STANDARD_PAL_SIZE];
+
+    int i = 0;
+
+    standardPalette[i++] = Qt::red;
+    standardPalette[i++] = Qt::green;
+    standardPalette[i++] = Qt::blue;
+    standardPalette[i++] = Qt::cyan;
+    standardPalette[i++] = Qt::magenta;
+    standardPalette[i++] = Qt::yellow;
+    standardPalette[i++] = Qt::darkRed;
+    standardPalette[i++] = Qt::darkGreen;
+    standardPalette[i++] = Qt::darkBlue;
+    standardPalette[i++] = Qt::darkCyan;
+    standardPalette[i++] = Qt::darkMagenta;
+    standardPalette[i++] = Qt::darkYellow;
+    standardPalette[i++] = Qt::white;
+    standardPalette[i++] = Qt::lightGray;
+    standardPalette[i++] = Qt::gray;
+    standardPalette[i++] = Qt::darkGray;
+    standardPalette[i++] = Qt::black;
+}
+
+
+OHSSelector::OHSSelector( QWidget *parent, const char *name )
+        : OXYSelector( parent, name )
+{
+        setRange( 0, 0, 359, 255 );
+}
+
+void OHSSelector::updateContents()
+{
+        drawPalette(&pixmap);
+}
+
+void OHSSelector::resizeEvent( QResizeEvent * )
+{
+        updateContents();
+}
+
+void OHSSelector::drawContents( QPainter *painter )
+{
+        painter->drawPixmap( contentsRect().x(), contentsRect().y(), pixmap );
+}
+
+void OHSSelector::drawPalette( QPixmap *pixmap )
+{
+        int xSize = contentsRect().width(), ySize = contentsRect().height();
+        QImage image( xSize, ySize, 32 );
+        QColor col;
+        int h, s;
+        uint *p;
+
+        for ( s = ySize-1; s >= 0; s-- )
+        {
+                p = (uint *) image.scanLine( ySize - s - 1 );
+                for( h = 0; h < xSize; h++ )
+                {
+                        col.setHsv( 359*h/(xSize-1), 255*s/(ySize-1), 192 );
+                        *p = col.rgb();
+                        p++;
+                }
+        }
+
+        if ( QColor::numBitPlanes() <= 8 )
+        {
+                createStandardPalette();
+                OImageEffect::dither( image, standardPalette, STANDARD_PAL_SIZE );
+        }
+        pixmap->convertFromImage( image );
+}
+
+
+//-----------------------------------------------------------------------------
+
+OValueSelector::OValueSelector( QWidget *parent, const char *name )
+        : OSelector( OSelector::Vertical, parent, name ), _hue(0), _sat(0)
+{
+        setRange( 0, 255 );
+        pixmap.setOptimization( QPixmap::BestOptim );
+}
+
+OValueSelector::OValueSelector(Orientation o, QWidget *parent, const char *name
+ )
+        : OSelector( o, parent, name), _hue(0), _sat(0)
+{
+        setRange( 0, 255 );
+        pixmap.setOptimization( QPixmap::BestOptim );
+}
+
+void OValueSelector::updateContents()
+{
+        drawPalette(&pixmap);
+}
+
+void OValueSelector::resizeEvent( QResizeEvent * )
+{
+        updateContents();
+}
+
+void OValueSelector::drawContents( QPainter *painter )
+{
+        painter->drawPixmap( contentsRect().x(), contentsRect().y(), pixmap );
+}
+
+void OValueSelector::drawPalette( QPixmap *pixmap )
+{
+        int xSize = contentsRect().width(), ySize = contentsRect().height();
+        QImage image( xSize, ySize, 32 );
+        QColor col;
+        uint *p;
+        QRgb rgb;
+
+        if ( orientation() == OSelector::Horizontal )
+        {
+                for ( int v = 0; v < ySize; v++ )
+                {
+                        p = (uint *) image.scanLine( ySize - v - 1 );
+
+                        for( int x = 0; x < xSize; x++ )
+                        {
+                                col.setHsv( _hue, _sat, 255*x/(xSize-1) );
+                                rgb = col.rgb();
+                                *p++ = rgb;
+                        }
+                }
+        }
+
+        if( orientation() == OSelector::Vertical )
+        {
+                for ( int v = 0; v < ySize; v++ )
+                {
+                        p = (uint *) image.scanLine( ySize - v - 1 );
+                        col.setHsv( _hue, _sat, 255*v/(ySize-1) );
+                        rgb = col.rgb();
+                        for ( int i = 0; i < xSize; i++ )
+                                *p++ = rgb;
+                }
+        }
+
+        if ( QColor::numBitPlanes() <= 8 )
+        {
+                createStandardPalette();
+                OImageEffect::dither( image, standardPalette, STANDARD_PAL_SIZE );
+        }
+        pixmap->convertFromImage( image );
+}