metalsliderui.java

Mobile 应用程序使用 Java Micro Edition (Java ME) 平台

		    fillLeft = !slider.isEnabled() ? trackLeft : trackLeft + 1;
		    fillRight = middleOfThumb;
		}
		else {
		    fillLeft = middleOfThumb;
		    fillRight = !slider.isEnabled() ? trackRight - 1 : trackRight - 2;
		}
	    }
	    else {
	        middleOfThumb = thumbRect.y + (thumbRect.height / 2);
		middleOfThumb -= trackRect.y; // To compensate for the g.translate()
		fillLeft = !slider.isEnabled() ? trackLeft : trackLeft + 1;
		fillRight = !slider.isEnabled() ? trackRight - 1 : trackRight - 2;
		
		if ( !drawInverted() ) {
		    fillTop = middleOfThumb;
		    fillBottom = !slider.isEnabled() ? trackBottom - 1 : trackBottom - 2;
		}
		else {
		    fillTop = !slider.isEnabled() ? trackTop : trackTop + 1;
		    fillBottom = middleOfThumb;
		}
	    }
	    
	    if ( slider.isEnabled() ) {
	        g.setColor( slider.getBackground() );
		g.drawLine( fillLeft, fillTop, fillRight, fillTop );
		g.drawLine( fillLeft, fillTop, fillLeft, fillBottom );

		g.setColor( MetalLookAndFeel.getControlShadow() );
		g.fillRect( fillLeft + 1, fillTop + 1,
			    fillRight - fillLeft, fillBottom - fillTop );
	    }
	    else {
	        g.setColor( MetalLookAndFeel.getControlShadow() );
		g.fillRect( fillLeft, fillTop,
			    fillRight - fillLeft, trackBottom - trackTop );
	    }
	}

        g.translate( -trackRect.x, -trackRect.y );
    }

    private void oceanPaintTrack(Graphics g)  {
	boolean leftToRight = MetalUtils.isLeftToRight(slider);
        boolean drawInverted = drawInverted();
        Color sliderAltTrackColor = (Color)UIManager.get(
                                    "Slider.altTrackColor");

        // Translate to the origin of the painting rectangle
        Rectangle paintRect = getPaintTrackRect();
        g.translate(paintRect.x, paintRect.y);

        // Width and height of the painting rectangle.
        int w = paintRect.width;
        int h = paintRect.height;

        if (!slider.isEnabled()) {
            g.setColor(MetalLookAndFeel.getControlShadow());
            g.drawRect(0, 0, w - 1, h - 1);
        }
	else if (slider.getOrientation() == JSlider.HORIZONTAL) {
            int middleOfThumb = thumbRect.x + (thumbRect.width / 2) -
                                paintRect.x;
            int fillMinX;
            int fillMaxX;

            if (middleOfThumb > 0) {
                g.setColor(chooseColor(drawInverted,
                           MetalLookAndFeel.getPrimaryControlDarkShadow(),
                           MetalLookAndFeel.getControlDarkShadow()));
               g.drawRect(0, 0, middleOfThumb - 1, h - 1);
            }
            if (middleOfThumb < w) {
                g.setColor(chooseColor(drawInverted,
                           MetalLookAndFeel.getControlDarkShadow(),
                           MetalLookAndFeel.getPrimaryControlDarkShadow()));
                g.drawRect(middleOfThumb, 0, w - middleOfThumb - 1, h - 1);
            }
            g.setColor(MetalLookAndFeel.getPrimaryControlShadow());
            if (drawInverted) {
                fillMinX = middleOfThumb;
                fillMaxX = w - 2;
                g.drawLine(1, 1, middleOfThumb, 1);
            }
            else {
                fillMinX = 1;
                fillMaxX = middleOfThumb;
                g.drawLine(middleOfThumb, 1, w - 1, 1);
            }
            if (h == 6) {
                g.setColor(MetalLookAndFeel.getWhite());
                g.drawLine(fillMinX, 1, fillMaxX, 1);
                g.setColor(sliderAltTrackColor);
                g.drawLine(fillMinX, 2, fillMaxX, 2);
                g.setColor(MetalLookAndFeel.getControlShadow());
                g.drawLine(fillMinX, 3, fillMaxX, 3);
                g.setColor(MetalLookAndFeel.getPrimaryControlShadow());
                g.drawLine(fillMinX, 4, fillMaxX, 4);
            }
        }
        else {
            int middleOfThumb = thumbRect.y + (thumbRect.height / 2) -
                                paintRect.y;
            int fillMinY;
            int fillMaxY;

            if (middleOfThumb > 0) {
                g.setColor(chooseColor(drawInverted,
                           MetalLookAndFeel.getControlDarkShadow(),
                           MetalLookAndFeel.getPrimaryControlDarkShadow()));
                g.drawRect(0, 0, w - 1, middleOfThumb - 1);
            }
            if (middleOfThumb < h) {
                g.setColor(chooseColor(drawInverted,
                           MetalLookAndFeel.getPrimaryControlDarkShadow(),
                           MetalLookAndFeel.getControlDarkShadow()));
                g.drawRect(0, middleOfThumb, w - 1, h - middleOfThumb - 1);
            }
            g.setColor(MetalLookAndFeel.getPrimaryControlShadow());
            if (drawInverted()) {
                fillMinY = 1;
                fillMaxY = middleOfThumb;
                if (leftToRight) {
                    g.drawLine(1, middleOfThumb, 1, h - 1);
                }
                else {
                    g.drawLine(w - 2, middleOfThumb, w - 2, h - 1);
                }
            }
            else {
                fillMinY = middleOfThumb;
                fillMaxY = h - 2;
                if (leftToRight) {
                    g.drawLine(1, 1, 1, middleOfThumb);
                }
                else {
                    g.drawLine(w - 2, 1, w - 2, middleOfThumb);
                }
            }
            if (w == 6) {
                g.setColor(chooseColor(!leftToRight,
                           MetalLookAndFeel.getWhite(),
                           MetalLookAndFeel.getPrimaryControlShadow()));
                g.drawLine(1, fillMinY, 1, fillMaxY);
                g.setColor(chooseColor(!leftToRight, sliderAltTrackColor,
                           MetalLookAndFeel.getControlShadow()));
                g.drawLine(2, fillMinY, 2, fillMaxY);
                g.setColor(chooseColor(!leftToRight,
                           MetalLookAndFeel.getControlShadow(),
                           sliderAltTrackColor));
                g.drawLine(3, fillMinY, 3, fillMaxY);
                g.setColor(chooseColor(!leftToRight,
                           MetalLookAndFeel.getPrimaryControlShadow(),
                           MetalLookAndFeel.getWhite()));
                g.drawLine(4, fillMinY, 4, fillMaxY);
            }
        }

        g.translate(-paintRect.x, -paintRect.y);
    }

    public void paintFocus(Graphics g)  {        
    }

    protected Dimension getThumbSize() {
        Dimension size = new Dimension();

        if ( slider.getOrientation() == JSlider.VERTICAL ) {
            size.width = getVertThumbIcon().getIconWidth();
            size.height = getVertThumbIcon().getIconHeight();
	}
	else {
            size.width = getHorizThumbIcon().getIconWidth();
            size.height = getHorizThumbIcon().getIconHeight();
	}

	return size;
    }

    /**
     * Gets the height of the tick area for horizontal sliders and the width of the
     * tick area for vertical sliders.  BasicSliderUI uses the returned value to
     * determine the tick area rectangle.
     */
    public int getTickLength() {
        return slider.getOrientation() == JSlider.HORIZONTAL ? tickLength + TICK_BUFFER + 1 :
        tickLength + TICK_BUFFER + 3;
    }

    /**
     * Returns the shorter dimension of the track.
     */
    protected int getTrackWidth() {
        // This strange calculation is here to keep the
        // track in proportion to the thumb.
        final double kIdealTrackWidth = 7.0;
	final double kIdealThumbHeight = 16.0;
        final double kWidthScalar = kIdealTrackWidth / kIdealThumbHeight;

        if ( slider.getOrientation() == JSlider.HORIZONTAL ) {
	    return (int)(kWidthScalar * thumbRect.height);
	}
	else {
	    return (int)(kWidthScalar * thumbRect.width);
	}
    }

    /**
     * Returns the longer dimension of the slide bar.  (The slide bar is only the
     * part that runs directly under the thumb)
     */
    protected int getTrackLength() {   
        if ( slider.getOrientation() == JSlider.HORIZONTAL ) {
            return trackRect.width; 
        }
        return trackRect.height;
    }

    /**
     * Returns the amount that the thumb goes past the slide bar.
     */
    protected int getThumbOverhang() {
        return (int)(getThumbSize().getHeight()-getTrackWidth())/2;
    }

    protected void scrollDueToClickInTrack( int dir ) {
        scrollByUnit( dir );
    }

    protected void paintMinorTickForHorizSlider( Graphics g, Rectangle tickBounds, int x ) {
        g.setColor( slider.isEnabled() ? slider.getForeground() : MetalLookAndFeel.getControlShadow() );
        g.drawLine( x, TICK_BUFFER, x, TICK_BUFFER + (tickLength / 2) );
    }

    protected void paintMajorTickForHorizSlider( Graphics g, Rectangle tickBounds, int x ) {
        g.setColor( slider.isEnabled() ? slider.getForeground() : MetalLookAndFeel.getControlShadow() );
        g.drawLine( x, TICK_BUFFER , x, TICK_BUFFER + (tickLength - 1) );
    }

    protected void paintMinorTickForVertSlider( Graphics g, Rectangle tickBounds, int y ) {
        g.setColor( slider.isEnabled() ? slider.getForeground() : MetalLookAndFeel.getControlShadow() );

	if (MetalUtils.isLeftToRight(slider)) {
	    g.drawLine( TICK_BUFFER, y, TICK_BUFFER + (tickLength / 2), y );
	}
	else {
	    g.drawLine( 0, y, tickLength/2, y );
	}
    }

    protected void paintMajorTickForVertSlider( Graphics g, Rectangle tickBounds, int y ) {
        g.setColor( slider.isEnabled() ? slider.getForeground() : MetalLookAndFeel.getControlShadow() );

	if (MetalUtils.isLeftToRight(slider)) {
	    g.drawLine( TICK_BUFFER, y, TICK_BUFFER + tickLength, y );
	}
	else {
	    g.drawLine( 0, y, tickLength, y );
	}
    }
}