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Class: XBMReader
Object
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+--ImageReader
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+--XBMReader
- Package:
- stx:libview2
- Category:
- Graphics-Images-Readers
- Version:
- rev:
1.58
date: 2018/06/03 07:27:31
- user: cg
- file: XBMReader.st directory: libview2
- module: stx stc-classLibrary: libview2
- Author:
- Claus Gittinger
this class provides methods for loading and saving x-bitmap-file images.
These images can (for example) be created using the bitmap editor supplied
with X.
Only monochrome images can be represented in this format.
Both reading and writing of images is supported.
Image
Form
Icon
BlitImageReader
FaceReader
GIFReader
JPEGReader
MacOSXIconReader
PBMReader
PCXReader
PNGReader
ST80FormReader
SunRasterReader
TargaReader
TIFFReader
WindowsIconReader
XPMReader
XWDReader
initialization
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initialize
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tell Image-class, that a new fileReader is present
for the '.xbm' extension.
testing
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canRepresent: anImage
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return true, if anImage can be represented in my file format
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isValidImageFile: aFileName
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return true, if aFileName contains an x-bitmap-file image
private-reading
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extractValueFor: keyword fromLine: lineString
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reading
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fromStream: aStream
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read an image in xbm format from aStream.
Leave image description in instance variables.
(i.e. to get the image, ask with image).
writing
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save: image onStream: aStream
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save image as XBM cdata on aStream.
Only depth1 b&w images can be represented in this format.
usage example(s):
XBMReader save:(Image fromFile:'../../goodies/bitmaps/xbmBitmaps/TicTacToe.xbm') onStream:Transcript
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Reading from a file:
|image|
image := Image fromFile:('../../goodies/bitmaps/xbmBitmaps/TicTacToe.xbm').
image inspect
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Saving to a file:
|image|
image := Image fromScreen:(0@0 corner:30@30).
image := image asThresholdMonochromeImage.
XBMReader save:image onFile:'/tmp/test.xbm'.
'/tmp/test.xbm' asFilename contents asString inspect.
(Image fromFile:('/tmp/test.xbm')) inspect.
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Or directly into a stream:
|image stream|
image := Image fromScreen:(0@0 corner:30@30).
image := image asThresholdMonochromeImage.
stream := WriteStream on:(String new).
XPMReader save:image onStream:stream.
stream contents inspect.
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