comparison widgets/LEDButton.cpp @ 983:04337eb34f23 osx-retina

Render LED button direct to widget, making it look OK on retina screen

 {
     friend class LEDButton;
 
     int dark_factor;
     QColor offcolor;
-    QPixmap *off_map;
-    QPixmap *on_map;
 };
 
 
 LEDButton::LEDButton(QWidget *parent) :
     QWidget(parent),

 {
     QColor col(Qt::green);
     d = new LEDButton::LEDButtonPrivate;
     d->dark_factor = 300;
     d->offcolor = col.dark(300);
-    d->off_map = 0;
-    d->on_map = 0;
     
     setColor(col);
 }
 
 

     led_state(true)
 {
     d = new LEDButton::LEDButtonPrivate;
     d->dark_factor = 300;
     d->offcolor = col.dark(300);
-    d->off_map = 0;
-    d->on_map = 0;
 
     setColor(col);
 }
 
 LEDButton::LEDButton(const QColor& col, bool state, QWidget *parent) :

     led_state(state)
 {
     d = new LEDButton::LEDButtonPrivate;
     d->dark_factor = 300;
     d->offcolor = col.dark(300);
-    d->off_map = 0;
-    d->on_map = 0;
 
     setColor(col);
 }
 
 LEDButton::~LEDButton()
 {
-    delete d->off_map;
-    delete d->on_map;
     delete d;
 }
 
 void
 LEDButton::mousePressEvent(QMouseEvent *e)

 	width = this->height();
     width -= 2; // leave one pixel border
     if (width < 0) 
 	width = 0;
 
-    QPixmap *tmpMap = 0;
-
-    if (led_state) {
-	if (d->on_map) {
-            if (d->on_map->size() == size()) {
-                paint.begin(this);
-                paint.drawPixmap(0, 0, *d->on_map);
-                paint.end();
-                return;
-            } else {
-                delete d->on_map;
-                d->on_map = 0;
-            }
-	}
-    } else {
-	if (d->off_map) {
-            if (d->off_map->size() == size()) {
-                paint.begin(this);
-                paint.drawPixmap(0, 0, *d->off_map);
-                paint.end();
-                return;
-            } else {
-                delete d->off_map;
-                d->off_map = 0;
-            }
-	}
-    }
-
-    int scale = 1;
-    width *= scale;
-
-    tmpMap = new QPixmap(width, width);
-    tmpMap->fill(palette().background().color());
-    paint.begin(tmpMap);
+    paint.begin(this);
 
     paint.setRenderHint(QPainter::Antialiasing, true);
 
     // Set the color of the LED according to given parameters
     color = (led_state) ? led_color : d->offcolor;

     brush.setStyle(Qt::SolidPattern);
     brush.setColor(color);
     paint.setBrush(brush);
 
     // Draws a "flat" LED with the given color:
-    paint.drawEllipse( scale, scale, width - scale*2, width - scale*2 );
+    paint.drawEllipse( 1, 1, width - 2, width - 2 );
 
     // Draw the bright light spot of the LED now, using modified "old"
     // painter routine taken from KDEUI´s LEDButton 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 );
+    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;

 
     // 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?
-    pen.setWidth(2 * scale);
+    pen.setWidth(2);
     brush.setStyle(Qt::NoBrush);
     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).

     color = palette().light().color();
     
     for (int arc = 120; arc < 2880; arc += 240) {
 	pen.setColor(color);
 	paint.setPen(pen);
-	int w = width - pen.width()/2 - scale + 1;
+	int w = width - pen.width()/2;
 	paint.drawArc(pen.width()/2 + 1, pen.width()/2 + 1, w - 2, w - 2, angle + arc, 240);
 	paint.drawArc(pen.width()/2 + 1, pen.width()/2 + 1, w - 2, w - 2, 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
-
-    QPixmap *&dest = led_state ? d->on_map : d->off_map;
-
-    if (scale > 1) {
-
-	QImage i = tmpMap->toImage();
-	width /= scale;
-	delete tmpMap;
-	dest = new QPixmap(QPixmap::fromImage
-			   (i.scaled(width, width, 
-				     Qt::KeepAspectRatio,
-				     Qt::SmoothTransformation)));
-
-    } else {
-
-	dest = tmpMap;
-    }
-
-    paint.begin(this);
-    paint.drawPixmap(0, 0, *dest);
-    paint.end();
 }
 
 bool
 LEDButton::state() const
 {

 LEDButton::setColor(const QColor& col)
 {
     if(led_color!=col) {
 	led_color = col;
 	d->offcolor = col.dark(d->dark_factor);
-	delete d->on_map;
-	d->on_map = 0;
-	delete d->off_map;
-	d->off_map = 0;
 	update();
     }
 }
 
 void