Attachment 128225 Details for Bug 219622 – high contrast image descriptor

high contrast image descriptor

HighContrastImageDescriptor.java (text/plain), 1.78 KB, created by Randy Hudson

on 2009-03-10 12:17:29 EDT

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Creator: Randy Hudson

Created: 2009-03-10 12:17:29 EDT

Size: 1.78 KB

patch

obsolete

>package org.eclipse.jface.resource;
>
>import org.eclipse.swt.graphics.ImageData;
>import org.eclipse.swt.graphics.RGB;
>
>class HighContrastImageDescriptor extends ImageDescriptor {
>	
>	final ImageDescriptor original;
>	
>	HighContrastImageDescriptor(ImageDescriptor original) {
>		this.original = original;
>	}
>	
>	public boolean equals(Object obj) {
>		if (obj instanceof HighContrastImageDescriptor) {
>			HighContrastImageDescriptor other = (HighContrastImageDescriptor) obj;
>			return other.original.equals(original);
>		}
>		return false;
>	}
>	
>	public ImageData getImageData() {
>		ImageData data = original.getImageData();
>		ImageData result = new ImageData(data.width, data.height, data.depth,
>				data.palette);
>		
>		result.alpha = data.alpha;
>		result.alphaData = data.alphaData;
>		result.bytesPerLine = data.bytesPerLine;
>		result.maskData = data.maskData;
>		result.maskPad = data.maskPad;
>		result.scanlinePad = data.scanlinePad;
>		
>		if (!data.palette.isDirect) {
>			RGB rgbs[] = data.palette.colors;
>			for (int i = 0; i < rgbs.length; i++)
>				rgbs[i] = invertValue(rgbs[i]);
>			result.data = data.data;
>			result.transparentPixel = data.transparentPixel;
>		} else {
>			for (int y = 0; y < result.height; y++) {
>				for (int x = 0; x < result.width; x++) {
>					RGB rgb = data.palette.getRGB(data.getPixel(x, y));
>					result.setPixel(x, y, result.palette.getPixel(invertValue(rgb)));
>				}
>			}
>		}
>		return result;
>	}
>	
>	public int hashCode() {
>		return original.hashCode() + 2187; //random power of 3
>	}
>	
>	RGB invertValue(RGB rgb) {
>		//invert everything first, then shift the hue by 180 degrees
>		rgb = new RGB(255 - rgb.red, 255 - rgb.green, 255 - rgb.blue);
>		float hsb[] = rgb.getHSB();
>		return new RGB((hsb[0] + 180f) % 360f, hsb[1], hsb[2]);
>	}
>
>}

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Attachments on bug 219622: 90201 | 128225 | 128227