| -rw-r--r-- | libopie2/opieui/oledbox.cpp | 277 |
1 files changed, 277 insertions, 0 deletions
diff --git a/libopie2/opieui/oledbox.cpp b/libopie2/opieui/oledbox.cpp new file mode 100644 index 0000000..52826f1 --- a/dev/null +++ b/libopie2/opieui/oledbox.cpp @@ -0,0 +1,277 @@ + +#include <qbitmap.h> +#include <qpainter.h> + +#include "oledbox.h" + + +#ifdef _QTE_IS_TOO_DUMB_TO_DRAW_AN_ARC + +/* XPM */ +static const char * ledborder_xpm[] = { +"16 16 11 1", +" c None", +". c #626562", +"+ c #7B7D7B", +"@ c #949594", +"# c #ACAEAC", +"$ c #CDCACD", +"% c #CDCECD", +"; c #E6E6E6", +"> c #FFFFFF", +", c #E6E2E6", +"' c #FFFAFF", +" .++@@# ", +" ...++@@##$ ", +" .....+@##$$% ", +" ..... #$%%% ", +" ... %%; ", +".... ;;;;", +"++. ;>>", +"+++ >>>", +"@@@ >>>", +"@@# >>>", +"#### >>>>", +" #$$ >>> ", +" $$,,' >>>>> ", +" ,,,''>>>>>>> ", +" ,''>>>>>>> ", +" '>>>>> "}; + + +QPixmap *OLedBox::s_border_pix = 0; + +#endif + + +OLedBox::OLedBox ( const QColor &col, QWidget *parent, const char *name ) : QWidget ( parent, name ) +{ + m_color = col; + m_on = false; + m_readonly = true; + + m_pix [ 0 ] = m_pix [ 1 ] = 0; + + setBackgroundMode ( PaletteBackground ); + +#ifdef _QTE_IS_TOO_DUMB_TO_DRAW_AN_ARC + if ( !s_border_pix ) + s_border_pix = new QPixmap ( ledborder_xpm ); +#endif +} + +OLedBox::~OLedBox ( ) +{ + delete m_pix [ 0 ]; + delete m_pix [ 1 ]; +} + +QSize OLedBox::sizeHint ( ) const +{ + return QSize ( 16, 16 ); +} + +bool OLedBox::isOn ( ) const +{ + return m_on; +} + +QColor OLedBox::color ( ) const +{ + return m_color; +} + +void OLedBox::setOn ( bool b ) +{ + if ( m_on != b ) { + m_on = b; + update ( ); + } +} + +void OLedBox::toggle ( ) +{ + setOn ( !isOn ( ) ); +} + +void OLedBox::setColor ( const QColor &col ) +{ + if ( m_color != col ) { + m_color = col; + + delete m_pix [ 0 ]; + delete m_pix [ 1 ]; + m_pix[0] = m_pix[1] = 0; + update ( ); + } +} + +void OLedBox::mousePressEvent ( QMouseEvent *e ) +{ + if ( ! m_readonly && + e-> button ( ) == LeftButton ) { + m_on = !m_on; + update ( ); + emit toggled ( m_on ); + } +} + + +void OLedBox::resizeEvent ( QResizeEvent * ) +{ + delete m_pix [ 0 ]; + delete m_pix [ 1 ]; + m_pix[0] = m_pix[1] = 0; + + update ( ); +} + +void OLedBox::paintEvent ( QPaintEvent *e ) +{ + int ind = m_on ? 1 : 0; + + if ( !m_pix [ ind ] ) { + m_pix [ ind ] = new QPixmap ( size ( )); + + drawLed ( m_pix [ ind ], m_on ? m_color : m_color. dark ( 300 ) ); + } + if ( !e-> erased ( )) + erase ( ); + + QPainter p ( this ); + p. drawPixmap ( 0, 0, *m_pix [ ind ] ); +} + +// From KDE libkdeui / led.cpp + +void OLedBox::drawLed ( QPixmap *pix, const QColor &col ) // paint a ROUND SUNKEN led lamp +{ + QPainter paint; + QColor color; + QBrush brush; + QPen pen; + + pix-> fill ( black ); + + // First of all we want to know what area should be updated + // Initialize coordinates, width, and height of the LED + int width = pix-> width ( ); + + // Make sure the LED is round! + if ( width > pix-> height ( )) + width = pix-> height ( ); + width -= 2; // leave one pixel border + if ( width < 0 ) + width = 0; + + // maybe we could stop HERE, if width <=0 ? + + // start painting widget + // + paint.begin( pix ); + + // Set the color of the LED according to given parameters + color = col; + + // Set the brush to SolidPattern, this fills the entire area + // of the ellipse which is drawn first + brush.setStyle( QBrush::SolidPattern ); + brush.setColor( color ); + paint.setBrush( brush ); // Assign the brush to the painter + + // Draws a "flat" LED with the given color: + paint.drawEllipse( 1, 1, width, width ); + + // Draw the bright light spot of the LED now, using modified "old" + // painter routine taken from KDEUIs KLed widget: + + // Setting the new width of the pen is essential to avoid "pixelized" + // shadow like it can be observed with the old LED code + pen.setWidth( 2 ); + + // shrink the light on the LED to a size about 2/3 of the complete LED + int pos = width / 5 + 1; + int light_width = width; + light_width *= 2; + light_width /= 3; + + // Calculate the LEDs "light factor": + int light_quote = ( 130 * 2 / ( light_width ? light_width : 1 ) ) + 100; + + // Now draw the bright spot on the LED: + while ( light_width ) + { + color = color.light( light_quote ); // make color lighter + pen.setColor( color ); // set color as pen color + paint.setPen( pen ); // select the pen for drawing + paint.drawEllipse( pos, pos, light_width, light_width ); // draw the ellipse (circle) + light_width--; + if ( !light_width ) + break; + paint.drawEllipse( pos, pos, light_width, light_width ); + light_width--; + if ( !light_width ) + break; + paint.drawEllipse( pos, pos, light_width, light_width ); + pos++; + light_width--; + } + + // Drawing of bright spot finished, now draw a thin border + // around the LED which resembles a shadow with light coming + // from the upper left. + +#ifdef _QTE_IS_TOO_DUMB_TO_DRAW_AN_ARC + paint. drawPixmap ( 0, 0, *s_border_pix ); + paint. end ( ); + + pix-> setMask ( pix-> createHeuristicMask ( )); + +#else + pen.setWidth( 3 ); + brush.setStyle( QBrush::NoBrush ); // Switch off the brush + paint.setBrush( brush ); // This avoids filling of the ellipse + + // Set the initial color value to 200 (bright) and start + // drawing the shadow border at 45 (45*16 = 720). + int shadow_color = 200, angle; + + for ( angle = 720; angle < 6480; angle += 240 ) + { + color.setRgb( shadow_color, shadow_color, shadow_color ); + pen.setColor( color ); + paint.setPen( pen ); + paint.drawArc( 0, 0, width+2, width+2, angle, 240 ); + paint.drawArc( 1, 1, width, width, angle, 240 ); + paint.drawArc( 2, 2, width-2, width-2, angle, 240 ); + if ( angle < 2320 ) { + shadow_color -= 25; // set color to a darker value + if ( shadow_color < 100 ) + shadow_color = 100; + } + else if ( ( angle > 2320 ) && ( angle < 5760 ) ) { + shadow_color += 25; // set color to a brighter value + if ( shadow_color > 255 ) + shadow_color = 255; + } + else { + shadow_color -= 25; // set color to a darker value again + if ( shadow_color < 100 ) + shadow_color = 100; + } // end if ( angle < 2320 ) + } // end for ( angle = 720; angle < 6480; angle += 160 ) + paint.end(); + // + // painting done + + QBitmap mask ( pix-> width ( ), pix-> height ( ), true ); + QPainter mp ( &mask ); + mp. setPen ( Qt::NoPen ); + mp. setBrush ( Qt::color1 ); + mp. drawEllipse ( 0, 0, width + 2, width + 2 ); + mp. end ( ); + + pix-> setMask ( mask ); +#endif +} + |