Mercurial > projects > dwt-linux
annotate dwt/internal/image/FileFormat.d @ 259:c0d810de7093
Update SWT 3.4M7 to 3.4
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sun, 29 Jun 2008 14:33:38 +0200 |
| parents | ce446666f5a2 |
| children |
| rev | line source |
|---|---|
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1 /******************************************************************************* |
| 12 | 2 * Copyright (c) 2000, 2006 IBM Corporation and others. |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 108 | 10 * Port to the D programming language: |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 12 | 12 *******************************************************************************/ |
| 13 module dwt.internal.image.FileFormat; | |
| 14 | |
| 238 | 15 import dwt.dwthelper.utils; |
| 16 | |
| 12 | 17 public import dwt.graphics.ImageLoader; |
| 18 public import dwt.graphics.ImageData; | |
| 19 public import dwt.internal.image.LEDataInputStream; | |
| 20 public import dwt.internal.image.LEDataOutputStream; | |
| 21 | |
| 71 | 22 import dwt.DWT; |
| 12 | 23 |
| 24 public import dwt.dwthelper.InputStream; | |
| 25 public import dwt.dwthelper.OutputStream; | |
| 26 | |
| 13 | 27 import dwt.internal.image.GIFFileFormat; |
| 12 | 28 import dwt.internal.image.WinBMPFileFormat; |
| 29 import dwt.internal.image.WinICOFileFormat; | |
| 30 import dwt.internal.image.TIFFFileFormat; | |
| 31 import dwt.internal.image.OS2BMPFileFormat; | |
| 13 | 32 import dwt.internal.image.JPEGFileFormat; |
| 33 import dwt.internal.image.PNGFileFormat; | |
| 12 | 34 |
| 35 import tango.core.Exception; | |
| 36 import tango.core.Tuple; | |
| 37 | |
| 38 /** | |
| 39 * Abstract factory class for loading/unloading images from files or streams | |
| 40 * in various image file formats. | |
| 41 * | |
| 42 */ | |
| 43 public abstract class FileFormat { | |
| 238 | 44 static const String FORMAT_PACKAGE = "dwt.internal.image"; //$NON-NLS-1$ |
| 45 static const String FORMAT_SUFFIX = "FileFormat"; //$NON-NLS-1$ | |
| 46 static const String[] FORMATS = [ "WinBMP"[], "WinBMP", "GIF", "WinICO", "JPEG", "PNG", "TIFF", "OS2BMP" ]; //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$//$NON-NLS-5$ //$NON-NLS-6$//$NON-NLS-7$//$NON-NLS-8$ | |
| 12 | 47 alias Tuple!( WinBMPFileFormat, WinBMPFileFormat, GIFFileFormat, WinICOFileFormat, JPEGFileFormat, PNGFileFormat, TIFFFileFormat, OS2BMPFileFormat ) TFormats; |
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48 LEDataInputStream inputStream; |
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49 LEDataOutputStream outputStream; |
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50 ImageLoader loader; |
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51 int compression; |
| 12 | 52 |
| 53 /** | |
| 54 * Return whether or not the specified input stream | |
| 55 * represents a supported file format. | |
| 56 */ | |
| 57 abstract bool isFileFormat(LEDataInputStream stream); | |
| 58 | |
| 59 abstract ImageData[] loadFromByteStream(); | |
| 60 | |
| 61 /** | |
| 62 * Read the specified input stream, and return the | |
| 63 * device independent image array represented by the stream. | |
| 64 */ | |
| 65 public ImageData[] loadFromStream(LEDataInputStream stream) { | |
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66 try { |
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67 inputStream = stream; |
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68 return loadFromByteStream(); |
| 12 | 69 } catch (IOException e) { |
| 71 | 70 DWT.error(DWT.ERROR_IO, e); |
| 12 | 71 return null; |
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Tango update to rev 3158, TracedException>Exception, fromUtf8z>fromStringz,Fix Bug in MenuItem Thanx to nascent for the report.
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72 } catch (Exception e) { |
| 71 | 73 DWT.error(DWT.ERROR_INVALID_IMAGE, e); |
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parents:
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74 return null; |
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8cec8f536af3
All D sources complete gvim retab (4 spaces), bug with Composite moveAbove/moveBelow fixed.
Frank Benoit <benoit@tionex.de>
parents:
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diff
changeset
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75 } |
| 12 | 76 } |
| 77 | |
| 78 /** | |
| 79 * Read the specified input stream using the specified loader, and | |
| 80 * return the device independent image array represented by the stream. | |
| 81 */ | |
| 82 public static ImageData[] load(InputStream istr, ImageLoader loader) { | |
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83 FileFormat fileFormat = null; |
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8cec8f536af3
All D sources complete gvim retab (4 spaces), bug with Composite moveAbove/moveBelow fixed.
Frank Benoit <benoit@tionex.de>
parents:
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84 LEDataInputStream stream = new LEDataInputStream(istr); |
| 259 | 85 bool isSupported = false; |
| 12 | 86 foreach( TFormat; TFormats ){ |
| 87 try{ | |
| 88 fileFormat = new TFormat(); | |
| 89 if (fileFormat.isFileFormat(stream)) { | |
| 90 isSupported = true; | |
| 91 break; | |
| 92 } | |
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158
de2578a843a7
Tango update to rev 3158, TracedException>Exception, fromUtf8z>fromStringz,Fix Bug in MenuItem Thanx to nascent for the report.
Frank Benoit <benoit@tionex.de>
parents:
134
diff
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93 } catch (Exception e) { |
| 12 | 94 } |
| 95 } | |
| 71 | 96 if (!isSupported) DWT.error(DWT.ERROR_UNSUPPORTED_FORMAT); |
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parents:
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97 fileFormat.loader = loader; |
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8cec8f536af3
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Frank Benoit <benoit@tionex.de>
parents:
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diff
changeset
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98 return fileFormat.loadFromStream(stream); |
| 12 | 99 } |
| 100 | |
| 101 /** | |
| 102 * Write the device independent image array stored in the specified loader | |
| 103 * to the specified output stream using the specified file format. | |
| 104 */ | |
| 105 public static void save(OutputStream os, int format, ImageLoader loader) { | |
| 71 | 106 if (format < 0 || format >= FORMATS.length) DWT.error(DWT.ERROR_UNSUPPORTED_FORMAT); |
| 131 | 107 if (FORMATS[format] is null) DWT.error(DWT.ERROR_UNSUPPORTED_FORMAT); |
| 108 if (loader.data is null || loader.data.length < 1) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 12 | 109 |
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59
8cec8f536af3
All D sources complete gvim retab (4 spaces), bug with Composite moveAbove/moveBelow fixed.
Frank Benoit <benoit@tionex.de>
parents:
55
diff
changeset
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110 LEDataOutputStream stream = new LEDataOutputStream(os); |
|
8cec8f536af3
All D sources complete gvim retab (4 spaces), bug with Composite moveAbove/moveBelow fixed.
Frank Benoit <benoit@tionex.de>
parents:
55
diff
changeset
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111 FileFormat fileFormat = null; |
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8cec8f536af3
All D sources complete gvim retab (4 spaces), bug with Composite moveAbove/moveBelow fixed.
Frank Benoit <benoit@tionex.de>
parents:
55
diff
changeset
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112 try { |
| 12 | 113 foreach( idx, TFormat; TFormats ){ |
| 131 | 114 if( idx is format ){ |
| 12 | 115 fileFormat = new TFormat(); |
| 116 } | |
| 117 } | |
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158
de2578a843a7
Tango update to rev 3158, TracedException>Exception, fromUtf8z>fromStringz,Fix Bug in MenuItem Thanx to nascent for the report.
Frank Benoit <benoit@tionex.de>
parents:
134
diff
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118 } catch (Exception e) { |
| 71 | 119 DWT.error(DWT.ERROR_UNSUPPORTED_FORMAT); |
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8cec8f536af3
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parents:
55
diff
changeset
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120 } |
| 131 | 121 if (format is DWT.IMAGE_BMP_RLE) { |
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parents:
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122 switch (loader.data[0].depth) { |
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8cec8f536af3
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parents:
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123 case 8: fileFormat.compression = 1; break; |
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8cec8f536af3
All D sources complete gvim retab (4 spaces), bug with Composite moveAbove/moveBelow fixed.
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parents:
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124 case 4: fileFormat.compression = 2; break; |
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55
93981635e709
Checked and inserted missing default switch cases.
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125 default: |
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parents:
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126 } |
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8cec8f536af3
All D sources complete gvim retab (4 spaces), bug with Composite moveAbove/moveBelow fixed.
Frank Benoit <benoit@tionex.de>
parents:
55
diff
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127 } |
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8cec8f536af3
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parents:
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128 fileFormat.unloadIntoStream(loader, stream); |
| 12 | 129 } |
| 130 | |
| 131 abstract void unloadIntoByteStream(ImageLoader loader); | |
| 132 | |
| 133 /** | |
| 134 * Write the device independent image array stored in the specified loader | |
| 135 * to the specified output stream. | |
| 136 */ | |
| 137 public void unloadIntoStream(ImageLoader loader, LEDataOutputStream stream) { | |
|
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8cec8f536af3
All D sources complete gvim retab (4 spaces), bug with Composite moveAbove/moveBelow fixed.
Frank Benoit <benoit@tionex.de>
parents:
55
diff
changeset
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138 try { |
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8cec8f536af3
All D sources complete gvim retab (4 spaces), bug with Composite moveAbove/moveBelow fixed.
Frank Benoit <benoit@tionex.de>
parents:
55
diff
changeset
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139 outputStream = stream; |
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8cec8f536af3
All D sources complete gvim retab (4 spaces), bug with Composite moveAbove/moveBelow fixed.
Frank Benoit <benoit@tionex.de>
parents:
55
diff
changeset
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140 unloadIntoByteStream(loader); |
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8cec8f536af3
All D sources complete gvim retab (4 spaces), bug with Composite moveAbove/moveBelow fixed.
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parents:
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141 outputStream.flush(); |
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158
de2578a843a7
Tango update to rev 3158, TracedException>Exception, fromUtf8z>fromStringz,Fix Bug in MenuItem Thanx to nascent for the report.
Frank Benoit <benoit@tionex.de>
parents:
134
diff
changeset
|
142 } catch (Exception e) { |
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59
8cec8f536af3
All D sources complete gvim retab (4 spaces), bug with Composite moveAbove/moveBelow fixed.
Frank Benoit <benoit@tionex.de>
parents:
55
diff
changeset
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143 try {outputStream.flush();} catch (Exception f) {} |
| 71 | 144 DWT.error(DWT.ERROR_IO, e); |
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59
8cec8f536af3
All D sources complete gvim retab (4 spaces), bug with Composite moveAbove/moveBelow fixed.
Frank Benoit <benoit@tionex.de>
parents:
55
diff
changeset
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145 } |
| 12 | 146 } |
| 147 } |