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+/* This file is part of the KDE libraries
+ Copyright (C) 1998 Jörg Habenicht (j.habenicht@europemail.com)
+
+ 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.
+*/
+
+
+#define PAINT_BENCH
+#undef PAINT_BENCH
+
+#ifdef PAINT_BENCH
+#include <tqdatetime.h>
+#include <stdio.h>
+#endif
+
+
+#include <tqpainter.h>
+#include <tqimage.h>
+#include <tqcolor.h>
+#include <kapplication.h>
+#include <kpixmapeffect.h>
+#include "kled.h"
+
+
+class KLed::KLedPrivate
+{
+ friend class KLed;
+
+ int dark_factor;
+ TQColor offcolor;
+ TQPixmap *off_map;
+ TQPixmap *on_map;
+};
+
+
+
+KLed::KLed(TQWidget *parent, const char *name)
+ : TQWidget( parent, name),
+ led_state(On),
+ led_look(Raised),
+ led_tqshape(Circular)
+{
+ TQColor col(green);
+ d = new KLed::KLedPrivate;
+ d->dark_factor = 300;
+ d->offcolor = col.dark(300);
+ d->off_map = 0;
+ d->on_map = 0;
+
+ setColor(col);
+}
+
+
+KLed::KLed(const TQColor& col, TQWidget *parent, const char *name)
+ : TQWidget( parent, name),
+ led_state(On),
+ led_look(Raised),
+ led_tqshape(Circular)
+{
+ d = new KLed::KLedPrivate;
+ d->dark_factor = 300;
+ d->offcolor = col.dark(300);
+ d->off_map = 0;
+ d->on_map = 0;
+
+ setColor(col);
+ //setShape(Circular);
+}
+
+KLed::KLed(const TQColor& col, KLed::State state,
+ KLed::Look look, KLed::Shape tqshape, TQWidget *parent, const char *name )
+ : TQWidget(parent, name),
+ led_state(state),
+ led_look(look),
+ led_tqshape(tqshape)
+{
+ d = new KLed::KLedPrivate;
+ d->dark_factor = 300;
+ d->offcolor = col.dark(300);
+ d->off_map = 0;
+ d->on_map = 0;
+
+ //setShape(tqshape);
+ setColor(col);
+}
+
+
+KLed::~KLed()
+{
+ delete d->off_map;
+ delete d->on_map;
+ delete d;
+}
+
+void
+KLed::paintEvent(TQPaintEvent *)
+{
+#ifdef PAINT_BENCH
+ const int rounds = 1000;
+ TQTime t;
+ t.start();
+ for (int i=0; i<rounds; i++) {
+#endif
+ switch(led_tqshape)
+ {
+ case Rectangular:
+ switch (led_look)
+ {
+ case Sunken :
+ paintRectFrame(false);
+ break;
+ case Raised :
+ paintRectFrame(true);
+ break;
+ case Flat :
+ paintRect();
+ break;
+ default :
+ qWarning("%s: in class KLed: no KLed::Look set",tqApp->argv()[0]);
+ }
+ break;
+ case Circular:
+ switch (led_look)
+ {
+ case Flat :
+ paintFlat();
+ break;
+ case Raised :
+ paintRound();
+ break;
+ case Sunken :
+ paintSunken();
+ break;
+ default:
+ qWarning("%s: in class KLed: no KLed::Look set",tqApp->argv()[0]);
+ }
+ break;
+ default:
+ qWarning("%s: in class KLed: no KLed::Shape set",tqApp->argv()[0]);
+ break;
+ }
+#ifdef PAINT_BENCH
+ }
+ int ready = t.elapsed();
+ qWarning("elapsed: %d msec. for %d rounds", ready, rounds);
+#endif
+}
+
+int
+KLed::ensureRoundLed()
+{
+ // Initialize coordinates, width, and height of the LED
+ //
+ int width = this->width();
+ // Make sure the LED is round!
+ if (width > this->height())
+ width = this->height();
+ width -= 2; // leave one pixel border
+ if (width < 0)
+ width = 0;
+
+ return width;
+}
+
+bool
+KLed::paintCachedPixmap()
+{
+ if (led_state) {
+ if (d->on_map) {
+ TQPainter paint(this);
+ paint.drawPixmap(0, 0, *d->on_map);
+ return true;
+ }
+ } else {
+ if (d->off_map) {
+ TQPainter paint(this);
+ paint.drawPixmap(0, 0, *d->off_map);
+ return true;
+ }
+ }
+
+ return false;
+}
+
+void
+KLed::paintFlat() // paint a ROUND FLAT led lamp
+{
+ if (paintCachedPixmap()) return;
+
+ TQPainter paint;
+ TQColor color;
+ TQBrush brush;
+ TQPen pen;
+
+ int width = ensureRoundLed();
+
+
+ int scale = 3;
+ TQPixmap *tmpMap = 0;
+
+ width *= scale;
+
+ tmpMap = new TQPixmap(width + 6, width + 6);
+ tmpMap->fill(paletteBackgroundColor());
+
+ // start painting widget
+ //
+ paint.begin(tmpMap);
+
+ // Set the color of the LED according to given parameters
+ color = ( led_state ) ? led_color : d->offcolor;
+
+ // Set the brush to SolidPattern, this fills the entire area
+ // of the ellipse which is drawn with a thin gray "border" (pen)
+ brush.setStyle( Qt::SolidPattern );
+ brush.setColor( color );
+
+ pen.setWidth( scale );
+ color = tqcolorGroup().dark();
+ pen.setColor( color ); // Set the pen accordingly
+
+ paint.setPen( pen ); // Select pen for drawing
+ paint.setBrush( brush ); // Assign the brush to the painter
+
+ // Draws a "flat" LED with the given color:
+ paint.drawEllipse( scale, scale, width - scale * 2, width - scale * 2 );
+
+ paint.end();
+ //
+ // painting done
+ TQPixmap *&dest = led_state ? d->on_map : d->off_map;
+ TQImage i = tmpMap->convertToImage();
+ width /= 3;
+ i = i.smoothScale(width, width);
+ delete tmpMap;
+ dest = new TQPixmap(i);
+ paint.begin(this);
+ paint.drawPixmap(0, 0, *dest);
+ paint.end();
+
+}
+
+void
+KLed::paintRound() // paint a ROUND RAISED led lamp
+{
+ if (paintCachedPixmap()) return;
+
+ TQPainter paint;
+ TQColor color;
+ TQBrush brush;
+ TQPen pen;
+
+ // Initialize coordinates, width, and height of the LED
+ int width = ensureRoundLed();
+
+ int scale = 3;
+ TQPixmap *tmpMap = 0;
+
+ width *= scale;
+
+ tmpMap = new TQPixmap(width + 6, width + 6);
+ tmpMap->fill(paletteBackgroundColor());
+ paint.begin(tmpMap);
+
+ // Set the color of the LED according to given parameters
+ color = ( led_state ) ? led_color : d->offcolor;
+
+ // Set the brush to SolidPattern, this fills the entire area
+ // of the ellipse which is drawn first
+ brush.setStyle( Qt::SolidPattern );
+ brush.setColor( color );
+ paint.setBrush( brush ); // Assign the brush to the painter
+
+ // Draws a "flat" LED with the given color:
+ paint.drawEllipse( scale, scale, width - scale*2, width - scale*2 );
+
+ // Draw the bright light spot of the LED now, using modified "old"
+ // painter routine taken from KDEUI´s 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 * scale );
+
+ // 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 LED´s "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 gray border
+ // around the LED; it looks nicer that way. We do this here to
+ // avoid that the border can be erased by the bright spot of the LED
+
+ pen.setWidth( 2 * scale + 1 );
+ color = tqcolorGroup().dark();
+ pen.setColor( color ); // Set the pen accordingly
+ paint.setPen( pen ); // Select pen for drawing
+ brush.setStyle( Qt::NoBrush ); // Switch off the brush
+ paint.setBrush( brush ); // This avoids filling of the ellipse
+
+ paint.drawEllipse( 2, 2, width, width );
+
+ paint.end();
+ //
+ // painting done
+ TQPixmap *&dest = led_state ? d->on_map : d->off_map;
+ TQImage i = tmpMap->convertToImage();
+ width /= 3;
+ i = i.smoothScale(width, width);
+ delete tmpMap;
+ dest = new TQPixmap(i);
+ paint.begin(this);
+ paint.drawPixmap(0, 0, *dest);
+ paint.end();
+
+}
+
+void
+KLed::paintSunken() // paint a ROUND SUNKEN led lamp
+{
+ if (paintCachedPixmap()) return;
+
+ TQPainter paint;
+ TQColor color;
+ TQBrush brush;
+ TQPen pen;
+
+ // First of all we want to know what area should be updated
+ // Initialize coordinates, width, and height of the LED
+ int width = ensureRoundLed();
+
+ int scale = 3;
+ TQPixmap *tmpMap = 0;
+
+ width *= scale;
+
+ tmpMap = new TQPixmap(width, width);
+ tmpMap->fill(paletteBackgroundColor());
+ paint.begin(tmpMap);
+
+ // Set the color of the LED according to given parameters
+ color = ( led_state ) ? led_color : d->offcolor;
+
+ // Set the brush to SolidPattern, this fills the entire area
+ // of the ellipse which is drawn first
+ brush.setStyle( Qt::SolidPattern );
+ brush.setColor( color );
+ paint.setBrush( brush ); // Assign the brush to the painter
+
+ // Draws a "flat" LED with the given color:
+ paint.drawEllipse( scale, scale, width - scale*2, width - scale*2 );
+
+ // Draw the bright light spot of the LED now, using modified "old"
+ // painter routine taken from KDEUI´s 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 * scale );
+
+ // 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 LED´s "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.
+
+ pen.setWidth( 2 * scale + 1 ); // ### shouldn't this value be smaller for smaller LEDs?
+ brush.setStyle( (Qt::BrushStyle)NoBrush ); // Switch off the brush
+ paint.setBrush( brush ); // This avoids filling of the ellipse
+
+ // Set the initial color value to colorGroup().light() (bright) and start
+ // drawing the shadow border at 45° (45*16 = 720).
+
+ int angle = -720;
+ color = tqcolorGroup().light();
+
+ for ( int arc = 120; arc < 2880; arc += 240 ) {
+ pen.setColor( color );
+ paint.setPen( pen );
+ int w = width - pen.width()/2 - scale + 1;
+ paint.drawArc( pen.width()/2, pen.width()/2, w, w, angle + arc, 240 );
+ paint.drawArc( pen.width()/2, pen.width()/2, w, w, angle - arc, 240 );
+ color = color.dark( 110 ); //FIXME: this should somehow use the contrast value
+ } // end for ( angle = 720; angle < 6480; angle += 160 )
+
+ paint.end();
+ //
+ // painting done
+
+ TQPixmap *&dest = led_state ? d->on_map : d->off_map;
+ TQImage i = tmpMap->convertToImage();
+ width /= 3;
+ i = i.smoothScale(width, width);
+ delete tmpMap;
+ dest = new TQPixmap(i);
+ paint.begin(this);
+ paint.drawPixmap(0, 0, *dest);
+ paint.end();
+
+}
+
+void
+KLed::paintRect()
+{
+ TQPainter painter(this);
+ TQBrush lightBrush(led_color);
+ TQBrush darkBrush(d->offcolor);
+ TQPen pen(led_color.dark(300));
+ int w=width();
+ int h=height();
+ // -----
+ switch(led_state)
+ {
+ case On:
+ painter.setBrush(lightBrush);
+ painter.drawRect(0, 0, w, h);
+ break;
+ case Off:
+ painter.setBrush(darkBrush);
+ painter.drawRect(0, 0, w, h);
+ painter.setPen(pen);
+ painter.drawLine(0, 0, w, 0);
+ painter.drawLine(0, h-1, w, h-1);
+ // Draw verticals
+ int i;
+ for(i=0; i < w; i+= 4 /* dx */)
+ painter.drawLine(i, 1, i, h-1);
+ break;
+ default: break;
+ }
+}
+
+void
+KLed::paintRectFrame(bool raised)
+{
+ TQPainter painter(this);
+ TQBrush lightBrush(led_color);
+ TQBrush darkBrush(d->offcolor);
+ int w=width();
+ int h=height();
+ TQColor black=Qt::black;
+ TQColor white=Qt::white;
+ // -----
+ if(raised)
+ {
+ painter.setPen(white);
+ painter.drawLine(0, 0, 0, h-1);
+ painter.drawLine(1, 0, w-1, 0);
+ painter.setPen(black);
+ painter.drawLine(1, h-1, w-1, h-1);
+ painter.drawLine(w-1, 1, w-1, h-1);
+ painter.fillRect(1, 1, w-2, h-2,
+ (led_state==On)? lightBrush : darkBrush);
+ } else {
+ painter.setPen(black);
+ painter.drawRect(0,0,w,h);
+ painter.drawRect(0,0,w-1,h-1);
+ painter.setPen(white);
+ painter.drawRect(1,1,w-1,h-1);
+ painter.fillRect(2, 2, w-4, h-4,
+ (led_state==On)? lightBrush : darkBrush);
+ }
+}
+
+KLed::State
+KLed::state() const
+{
+ return led_state;
+}
+
+KLed::Shape
+KLed::tqshape() const
+{
+ return led_tqshape;
+}
+
+TQColor
+KLed::color() const
+{
+ return led_color;
+}
+
+KLed::Look
+KLed::look() const
+{
+ return led_look;
+}
+
+void
+KLed::setState( State state )
+{
+ if (led_state != state)
+ {
+ led_state = state;
+ update();
+ }
+}
+
+void
+KLed::toggleState()
+{
+ toggle();
+}
+
+void
+KLed::setShape(KLed::Shape s)
+{
+ if(led_tqshape!=s)
+ {
+ led_tqshape = s;
+ update();
+ }
+}
+
+void
+KLed::setColor(const TQColor& col)
+{
+ if(led_color!=col) {
+ if(d->on_map) { delete d->on_map; d->on_map = 0; }
+ if(d->off_map) { delete d->off_map; d->off_map = 0; }
+ led_color = col;
+ d->offcolor = col.dark(d->dark_factor);
+ update();
+ }
+}
+
+void
+KLed::setDarkFactor(int darkfactor)
+{
+ if (d->dark_factor != darkfactor) {
+ d->dark_factor = darkfactor;
+ d->offcolor = led_color.dark(darkfactor);
+ update();
+ }
+}
+
+int
+KLed::darkFactor() const
+{
+ return d->dark_factor;
+}
+
+void
+KLed::setLook( Look look )
+{
+ if(led_look!=look)
+ {
+ led_look = look;
+ update();
+ }
+}
+
+void
+KLed::toggle()
+{
+ led_state = (led_state == On) ? Off : On;
+ // setColor(led_color);
+ update();
+}
+
+void
+KLed::on()
+{
+ setState(On);
+}
+
+void
+KLed::off()
+{
+ setState(Off);
+}
+
+TQSize
+KLed::tqsizeHint() const
+{
+ return TQSize(16, 16);
+}
+
+TQSize
+KLed::tqminimumSizeHint() const
+{
+ return TQSize(16, 16 );
+}
+
+void KLed::virtual_hook( int, void* )
+{ /*BASE::virtual_hook( id, data );*/ }
+
+#include "kled.moc"
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