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Lines 77-83
public class SnippetDrawAlphaTwoPass {
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| 77 |
ImageData imageMaskData = null; |
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ImageData imageMaskData = null; |
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| 79 |
if (imageData.getTransparencyType() == SWT.TRANSPARENCY_ALPHA) { |
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if (imageData.getTransparencyType() == SWT.TRANSPARENCY_ALPHA) { |
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imageMaskData = new ImageData(width, height, 8, ALPHA_PALETTE, imageData.scanlinePad, imageData.alphaData); |
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imageMaskData = new ImageData(width, height, 8, ALPHA_PALETTE, 1, imageData.alphaData); |
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} else if (imageData.getTransparencyType() == SWT.TRANSPARENCY_PIXEL || imageData.getTransparencyType() == SWT.TRANSPARENCY_MASK) { |
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} else if (imageData.getTransparencyType() == SWT.TRANSPARENCY_PIXEL || imageData.getTransparencyType() == SWT.TRANSPARENCY_MASK) { |
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ImageData transparencyMaskData = imageData.getTransparencyMask(); |
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ImageData transparencyMaskData = imageData.getTransparencyMask(); |
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imageMaskData = new ImageData(width, height, 1, BW_PALETTE, transparencyMaskData.scanlinePad, transparencyMaskData.data); |
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imageMaskData = new ImageData(width, height, 1, BW_PALETTE, transparencyMaskData.scanlinePad, transparencyMaskData.data); |
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Lines 127-133
public class SnippetDrawAlphaTwoPass {
Link Here
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| 127 |
scaledResult.maskPad = scaledResultMaskData.scanlinePad; |
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scaledResult.maskPad = scaledResultMaskData.scanlinePad; |
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scaledResult.maskData = scaledResultMaskData.data; |
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scaledResult.maskData = scaledResultMaskData.data; |
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} else { |
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} else { |
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scaledResult.alphaData = scaledResultMaskData.data; |
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byte[] alphaData = scaledResultMaskData.data; |
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if (scaledResultMaskData.scanlinePad != 1) { |
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alphaData = convertPad(scaledResultMaskData.data, scaledResultMaskData.width, scaledResultMaskData.height, scaledResultMaskData.depth, scaledResultMaskData.scanlinePad, 1); |
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} |
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scaledResult.alphaData = alphaData; |
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} |
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} |
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} |
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} |
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Lines 135-138
public class SnippetDrawAlphaTwoPass {
Link Here
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resultMask.dispose(); |
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resultMask.dispose(); |
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return scaledResult; |
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return scaledResult; |
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} |
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} |
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/* copied from ImageData.convertPad as it is not accessible outside the org.eclipse.swt package */ |
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private static byte[] convertPad(byte[] data, int width, int height, int depth, int pad, int newPad) { |
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if (pad == newPad) return data; |
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int stride = (width * depth + 7) / 8; |
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int bpl = (stride + (pad - 1)) / pad * pad; |
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int newBpl = (stride + (newPad - 1)) / newPad * newPad; |
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byte[] newData = new byte[height * newBpl]; |
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int srcIndex = 0, destIndex = 0; |
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for (int y = 0; y < height; y++) { |
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System.arraycopy(data, srcIndex, newData, destIndex, stride); |
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srcIndex += bpl; |
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destIndex += newBpl; |
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} |
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return newData; |
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} |
| 138 |
} |
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} |
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