Mercurial > projects > dwt2
annotate org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/internal/image/WinICOFileFormat.d @ 6:f36c67707cb3
Removed import to tango.core.Exception
author | Frank Benoit <benoit@tionex.de> |
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date | Thu, 05 Mar 2009 00:18:47 +0100 |
parents | 6dd524f61e62 |
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1 /******************************************************************************* |
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2 * Copyright (c) 2000, 2008 IBM Corporation and others. |
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3 * All rights reserved. This program and the accompanying materials |
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4 * are made available under the terms of the Eclipse Public License v1.0 |
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5 * which accompanies this distribution, and is available at |
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6 * http://www.eclipse.org/legal/epl-v10.html |
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7 * |
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8 * Contributors: |
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9 * IBM Corporation - initial API and implementation |
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10 * Port to the D programming language: |
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11 * Frank Benoit <benoit@tionex.de> |
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12 *******************************************************************************/ |
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13 module org.eclipse.swt.internal.image.WinICOFileFormat; |
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14 |
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15 import org.eclipse.swt.internal.image.FileFormat; |
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16 import org.eclipse.swt.graphics.PaletteData; |
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17 import org.eclipse.swt.internal.image.WinBMPFileFormat; |
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18 import org.eclipse.swt.SWT; |
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19 import java.lang.all; |
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20 |
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21 |
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22 public final class WinICOFileFormat : FileFormat { |
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23 |
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24 byte[] bitInvertData(byte[] data, int startIndex, int endIndex) { |
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25 // Destructively bit invert data in the given byte array. |
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26 for (int i = startIndex; i < endIndex; i++) { |
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27 data[i] = cast(byte)(255 - data[i - startIndex]); |
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28 } |
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29 return data; |
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30 } |
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31 |
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32 static final byte[] convertPad(byte[] data, int width, int height, int depth, int pad, int newPad) { |
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33 if (pad is newPad) return data; |
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34 int stride = (width * depth + 7) / 8; |
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35 int bpl = (stride + (pad - 1)) / pad * pad; |
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36 int newBpl = (stride + (newPad - 1)) / newPad * newPad; |
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37 byte[] newData = new byte[height * newBpl]; |
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38 int srcIndex = 0, destIndex = 0; |
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39 for (int y = 0; y < height; y++) { |
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40 System.arraycopy(data, srcIndex, newData, destIndex, newBpl); |
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41 srcIndex += bpl; |
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42 destIndex += newBpl; |
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43 } |
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44 return newData; |
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45 } |
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46 /** |
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47 * Answer the size in bytes of the file representation of the given |
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48 * icon |
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49 */ |
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50 int iconSize(ImageData i) { |
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51 int shapeDataStride = (i.width * i.depth + 31) / 32 * 4; |
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52 int maskDataStride = (i.width + 31) / 32 * 4; |
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53 int dataSize = (shapeDataStride + maskDataStride) * i.height; |
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54 int paletteSize = i.palette.colors !is null ? i.palette.colors.length * 4 : 0; |
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55 return WinBMPFileFormat.BMPHeaderFixedSize + paletteSize + dataSize; |
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56 } |
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57 override bool isFileFormat(LEDataInputStream stream) { |
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58 try { |
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59 byte[] header = new byte[4]; |
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60 stream.read(header); |
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61 stream.unread(header); |
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62 return header[0] is 0 && header[1] is 0 && header[2] is 1 && header[3] is 0; |
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63 } catch (Exception e) { |
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64 return false; |
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65 } |
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66 } |
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67 bool isValidIcon(ImageData i) { |
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68 switch (i.depth) { |
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69 case 1: |
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70 case 4: |
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71 case 8: |
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72 if (i.palette.isDirect) return false; |
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73 int size = i.palette.colors.length; |
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74 return size is 2 || size is 16 || size is 32 || size is 256; |
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75 case 24: |
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76 case 32: |
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77 return i.palette.isDirect; |
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78 default: |
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79 } |
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80 return false; |
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81 } |
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82 int loadFileHeader(LEDataInputStream byteStream) { |
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83 int[] fileHeader = new int[3]; |
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84 try { |
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85 fileHeader[0] = byteStream.readShort(); |
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86 fileHeader[1] = byteStream.readShort(); |
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87 fileHeader[2] = byteStream.readShort(); |
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88 } catch (IOException e) { |
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89 SWT.error(SWT.ERROR_IO, e); |
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90 } |
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91 if ((fileHeader[0] !is 0) || (fileHeader[1] !is 1)) |
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92 SWT.error(SWT.ERROR_INVALID_IMAGE); |
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93 int numIcons = fileHeader[2]; |
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94 if (numIcons <= 0) |
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95 SWT.error(SWT.ERROR_INVALID_IMAGE); |
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96 return numIcons; |
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97 } |
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98 int loadFileHeader(LEDataInputStream byteStream, bool hasHeader) { |
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99 int[] fileHeader = new int[3]; |
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100 try { |
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101 if (hasHeader) { |
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102 fileHeader[0] = byteStream.readShort(); |
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103 fileHeader[1] = byteStream.readShort(); |
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104 } else { |
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105 fileHeader[0] = 0; |
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106 fileHeader[1] = 1; |
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107 } |
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108 fileHeader[2] = byteStream.readShort(); |
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109 } catch (IOException e) { |
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110 SWT.error(SWT.ERROR_IO, e); |
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111 } |
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112 if ((fileHeader[0] !is 0) || (fileHeader[1] !is 1)) |
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113 SWT.error(SWT.ERROR_INVALID_IMAGE); |
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114 int numIcons = fileHeader[2]; |
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115 if (numIcons <= 0) |
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116 SWT.error(SWT.ERROR_INVALID_IMAGE); |
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117 return numIcons; |
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118 } |
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119 override ImageData[] loadFromByteStream() { |
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120 int numIcons = loadFileHeader(inputStream); |
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121 int[][] headers = loadIconHeaders(numIcons); |
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122 ImageData[] icons = new ImageData[headers.length]; |
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123 for (int i = 0; i < icons.length; i++) { |
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124 icons[i] = loadIcon(headers[i]); |
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125 } |
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126 return icons; |
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127 } |
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128 /** |
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129 * Load one icon from the byte stream. |
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130 */ |
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131 ImageData loadIcon(int[] iconHeader) { |
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132 byte[] infoHeader = loadInfoHeader(iconHeader); |
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133 WinBMPFileFormat bmpFormat = new WinBMPFileFormat(); |
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134 bmpFormat.inputStream = inputStream; |
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135 PaletteData palette = bmpFormat.loadPalette(infoHeader); |
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136 byte[] shapeData = bmpFormat.loadData(infoHeader); |
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137 int width = (infoHeader[4] & 0xFF) | ((infoHeader[5] & 0xFF) << 8) | ((infoHeader[6] & 0xFF) << 16) | ((infoHeader[7] & 0xFF) << 24); |
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138 int height = (infoHeader[8] & 0xFF) | ((infoHeader[9] & 0xFF) << 8) | ((infoHeader[10] & 0xFF) << 16) | ((infoHeader[11] & 0xFF) << 24); |
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139 if (height < 0) height = -height; |
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Frank Benoit <benoit@tionex.de>
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140 int depth = (infoHeader[14] & 0xFF) | ((infoHeader[15] & 0xFF) << 8); |
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141 infoHeader[14] = 1; |
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142 infoHeader[15] = 0; |
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Frank Benoit <benoit@tionex.de>
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143 byte[] maskData = bmpFormat.loadData(infoHeader); |
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144 maskData = convertPad(maskData, width, height, 1, 4, 2); |
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145 bitInvertData(maskData, 0, maskData.length); |
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146 return ImageData.internal_new( |
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147 width, |
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148 height, |
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149 depth, |
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150 palette, |
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151 4, |
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152 shapeData, |
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153 2, |
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154 maskData, |
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155 null, |
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156 -1, |
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157 -1, |
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158 SWT.IMAGE_ICO, |
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159 0, |
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160 0, |
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161 0, |
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162 0); |
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163 } |
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164 int[][] loadIconHeaders(int numIcons) { |
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165 int[][] headers = new int[][]( numIcons, 7 ); |
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166 try { |
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167 for (int i = 0; i < numIcons; i++) { |
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168 headers[i][0] = inputStream.read(); |
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169 headers[i][1] = inputStream.read(); |
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170 headers[i][2] = inputStream.readShort(); |
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171 headers[i][3] = inputStream.readShort(); |
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172 headers[i][4] = inputStream.readShort(); |
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173 headers[i][5] = inputStream.readInt(); |
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174 headers[i][6] = inputStream.readInt(); |
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175 } |
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176 } catch (IOException e) { |
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177 SWT.error(SWT.ERROR_IO, e); |
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178 } |
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179 return headers; |
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180 } |
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181 byte[] loadInfoHeader(int[] iconHeader) { |
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182 int width = iconHeader[0]; |
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183 int height = iconHeader[1]; |
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184 int numColors = iconHeader[2]; // the number of colors is in the low byte, but the high byte must be 0 |
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185 if (numColors is 0) numColors = 256; // this is specified: '00' represents '256' (0x100) colors |
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186 if ((numColors !is 2) && (numColors !is 8) && (numColors !is 16) && |
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187 (numColors !is 32) && (numColors !is 256)) |
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188 SWT.error(SWT.ERROR_INVALID_IMAGE); |
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189 if (inputStream.getPosition() < iconHeader[6]) { |
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|
190 // Seek to the specified offset |
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191 try { |
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|
192 inputStream.skip(iconHeader[6] - inputStream.getPosition()); |
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193 } catch (IOException e) { |
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|
194 SWT.error(SWT.ERROR_IO, e); |
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195 return null; |
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|
196 } |
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|
197 } |
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198 byte[] infoHeader = new byte[WinBMPFileFormat.BMPHeaderFixedSize]; |
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|
199 try { |
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|
200 inputStream.read(infoHeader); |
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parents:
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|
201 } catch (IOException e) { |
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Frank Benoit <benoit@tionex.de>
parents:
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changeset
|
202 SWT.error(SWT.ERROR_IO, e); |
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parents:
diff
changeset
|
203 } |
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Frank Benoit <benoit@tionex.de>
parents:
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changeset
|
204 if (((infoHeader[12] & 0xFF) | ((infoHeader[13] & 0xFF) << 8)) !is 1) |
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Frank Benoit <benoit@tionex.de>
parents:
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changeset
|
205 SWT.error(SWT.ERROR_INVALID_IMAGE); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
206 int infoWidth = (infoHeader[4] & 0xFF) | ((infoHeader[5] & 0xFF) << 8) | ((infoHeader[6] & 0xFF) << 16) | ((infoHeader[7] & 0xFF) << 24); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
207 int infoHeight = (infoHeader[8] & 0xFF) | ((infoHeader[9] & 0xFF) << 8) | ((infoHeader[10] & 0xFF) << 16) | ((infoHeader[11] & 0xFF) << 24); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
208 int bitCount = (infoHeader[14] & 0xFF) | ((infoHeader[15] & 0xFF) << 8); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
209 if (height is infoHeight && bitCount is 1) height /= 2; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
210 if (!((width is infoWidth) && (height * 2 is infoHeight) && |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
211 (bitCount is 1 || bitCount is 4 || bitCount is 8 || bitCount is 24 || bitCount is 32))) |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
212 SWT.error(SWT.ERROR_INVALID_IMAGE); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
213 infoHeader[8] = cast(byte)(height & 0xFF); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
214 infoHeader[9] = cast(byte)((height >> 8) & 0xFF); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
215 infoHeader[10] = cast(byte)((height >> 16) & 0xFF); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
216 infoHeader[11] = cast(byte)((height >> 24) & 0xFF); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
217 return infoHeader; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
218 } |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
219 /** |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
220 * Unload a single icon |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
221 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
222 void unloadIcon(ImageData icon) { |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
223 int sizeImage = (((icon.width * icon.depth + 31) / 32 * 4) + |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
224 ((icon.width + 31) / 32 * 4)) * icon.height; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
225 try { |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
226 outputStream.writeInt(WinBMPFileFormat.BMPHeaderFixedSize); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
227 outputStream.writeInt(icon.width); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
228 outputStream.writeInt(icon.height * 2); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
229 outputStream.writeShort(1); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
230 outputStream.writeShort(cast(short)icon.depth); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
231 outputStream.writeInt(0); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
232 outputStream.writeInt(sizeImage); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
233 outputStream.writeInt(0); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
234 outputStream.writeInt(0); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
235 outputStream.writeInt(icon.palette.colors !is null ? icon.palette.colors.length : 0); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
236 outputStream.writeInt(0); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
237 } catch (IOException e) { |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
238 SWT.error(SWT.ERROR_IO, e); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
239 } |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
240 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
241 byte[] rgbs = WinBMPFileFormat.paletteToBytes(icon.palette); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
242 try { |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
243 outputStream.write(rgbs); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
244 } catch (IOException e) { |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
245 SWT.error(SWT.ERROR_IO, e); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
246 } |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
247 unloadShapeData(icon); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
248 unloadMaskData(icon); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
249 } |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
250 /** |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
251 * Unload the icon header for the given icon, calculating the offset. |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
252 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
253 void unloadIconHeader(ImageData i) { |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
254 int headerSize = 16; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
255 int offset = headerSize + 6; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
256 int iconSize = iconSize(i); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
257 try { |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
258 outputStream.write(i.width); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
259 outputStream.write(i.height); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
260 outputStream.writeShort(i.palette.colors !is null ? i.palette.colors.length : 0); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
261 outputStream.writeShort(0); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
262 outputStream.writeShort(0); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
263 outputStream.writeInt(iconSize); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
264 outputStream.writeInt(offset); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
265 } catch (IOException e) { |
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266 SWT.error(SWT.ERROR_IO, e); |
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267 } |
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268 } |
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269 override void unloadIntoByteStream(ImageLoader loader) { |
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270 /* We do not currently support writing multi-image ico, |
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271 * so we use the first image data in the loader's array. */ |
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272 ImageData image = loader.data[0]; |
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273 if (!isValidIcon(image)) |
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274 SWT.error(SWT.ERROR_INVALID_IMAGE); |
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275 try { |
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276 outputStream.writeShort(0); |
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277 outputStream.writeShort(1); |
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278 outputStream.writeShort(1); |
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279 } catch (IOException e) { |
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280 SWT.error(SWT.ERROR_IO, e); |
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281 } |
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282 unloadIconHeader(image); |
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283 unloadIcon(image); |
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284 } |
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285 /** |
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286 * Unload the mask data for an icon. The data is flipped vertically |
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287 * and inverted. |
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288 */ |
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289 void unloadMaskData(ImageData icon) { |
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290 ImageData mask = icon.getTransparencyMask(); |
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291 int bpl = (icon.width + 7) / 8; |
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292 int pad = mask.scanlinePad; |
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293 int srcBpl = (bpl + pad - 1) / pad * pad; |
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294 int destBpl = (bpl + 3) / 4 * 4; |
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295 byte[] buf = new byte[destBpl]; |
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296 int offset = (icon.height - 1) * srcBpl; |
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297 byte[] data = mask.data; |
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298 try { |
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299 for (int i = 0; i < icon.height; i++) { |
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300 System.arraycopy(data, offset, buf, 0, bpl); |
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301 bitInvertData(buf, 0, bpl); |
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302 outputStream.write(buf, 0, destBpl); |
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303 offset -= srcBpl; |
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304 } |
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305 } catch (IOException e) { |
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306 SWT.error(SWT.ERROR_IO, e); |
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307 } |
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308 } |
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309 /** |
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310 * Unload the shape data for an icon. The data is flipped vertically. |
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311 */ |
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312 void unloadShapeData(ImageData icon) { |
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313 int bpl = (icon.width * icon.depth + 7) / 8; |
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314 int pad = icon.scanlinePad; |
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315 int srcBpl = (bpl + pad - 1) / pad * pad; |
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316 int destBpl = (bpl + 3) / 4 * 4; |
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317 byte[] buf = new byte[destBpl]; |
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318 int offset = (icon.height - 1) * srcBpl; |
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319 byte[] data = icon.data; |
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320 try { |
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321 for (int i = 0; i < icon.height; i++) { |
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322 System.arraycopy(data, offset, buf, 0, bpl); |
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323 outputStream.write(buf, 0, destBpl); |
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324 offset -= srcBpl; |
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325 } |
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326 } catch (IOException e) { |
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327 SWT.error(SWT.ERROR_IO, e); |
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328 } |
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329 } |
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330 } |