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Diffstat (limited to 'ruby_1_9_3/ext/tk/lib/tk/image.rb')
| -rw-r--r-- | ruby_1_9_3/ext/tk/lib/tk/image.rb | 395 |
1 files changed, 0 insertions, 395 deletions
diff --git a/ruby_1_9_3/ext/tk/lib/tk/image.rb b/ruby_1_9_3/ext/tk/lib/tk/image.rb deleted file mode 100644 index 00bb440d6a..0000000000 --- a/ruby_1_9_3/ext/tk/lib/tk/image.rb +++ /dev/null @@ -1,395 +0,0 @@ -# -# tk/image.rb : treat Tk image objects -# - -require 'tk' - -class TkImage<TkObject - include Tk - - TkCommandNames = ['image'.freeze].freeze - - Tk_IMGTBL = TkCore::INTERP.create_table - - (Tk_Image_ID = ['i'.freeze, TkUtil.untrust('00000')]).instance_eval{ - @mutex = Mutex.new - def mutex; @mutex; end - freeze - } - - TkCore::INTERP.init_ip_env{ - Tk_IMGTBL.mutex.synchronize{ Tk_IMGTBL.clear } - } - - def self.new(keys=nil) - if keys.kind_of?(Hash) - name = nil - if keys.key?(:imagename) - name = keys[:imagename] - elsif keys.key?('imagename') - name = keys['imagename'] - end - if name - if name.kind_of?(TkImage) - obj = name - else - name = _get_eval_string(name) - obj = nil - Tk_IMGTBL.mutex.synchronize{ - obj = Tk_IMGTBL[name] - } - end - if obj - if !(keys[:without_creating] || keys['without_creating']) - keys = _symbolkey2str(keys) - keys.delete('imagename') - keys.delete('without_creating') - obj.instance_eval{ - tk_call_without_enc('image', 'create', - @type, @path, *hash_kv(keys, true)) - } - end - return obj - end - end - end - (obj = self.allocate).instance_eval{ - Tk_IMGTBL.mutex.synchronize{ - initialize(keys) - Tk_IMGTBL[@path] = self - } - } - obj - end - - def initialize(keys=nil) - @path = nil - without_creating = false - if keys.kind_of?(Hash) - keys = _symbolkey2str(keys) - @path = keys.delete('imagename') - without_creating = keys.delete('without_creating') - end - unless @path - Tk_Image_ID.mutex.synchronize{ - @path = Tk_Image_ID.join(TkCore::INTERP._ip_id_) - Tk_Image_ID[1].succ! - } - end - unless without_creating - tk_call_without_enc('image', 'create', - @type, @path, *hash_kv(keys, true)) - end - end - - def delete - Tk_IMGTBL.mutex.synchronize{ - Tk_IMGTBL.delete(@id) if @id - } - tk_call_without_enc('image', 'delete', @path) - self - end - def height - number(tk_call_without_enc('image', 'height', @path)) - end - def inuse - bool(tk_call_without_enc('image', 'inuse', @path)) - end - def itemtype - tk_call_without_enc('image', 'type', @path) - end - def width - number(tk_call_without_enc('image', 'width', @path)) - end - - def TkImage.names - Tk_IMGTBL.mutex.synchronize{ - Tk.tk_call_without_enc('image', 'names').split.collect!{|id| - (Tk_IMGTBL[id])? Tk_IMGTBL[id] : id - } - } - end - - def TkImage.types - Tk.tk_call_without_enc('image', 'types').split - end -end - -class TkBitmapImage<TkImage - def __strval_optkeys - super() + ['maskdata', 'maskfile'] - end - private :__strval_optkeys - - def initialize(*args) - @type = 'bitmap' - super(*args) - end -end - -# A photo is an image whose pixels can display any color or be transparent. -# At present, only GIF and PPM/PGM formats are supported, but an interface -# exists to allow additional image file formats to be added easily. -# -# This class documentation is a copy from the original Tcl/Tk at -# http://www.tcl.tk/man/tcl8.5/TkCmd/photo.htm with some rewrited parts. -class TkPhotoImage<TkImage - NullArgOptionKeys = [ "shrink", "grayscale" ] - - def _photo_hash_kv(keys) - keys = _symbolkey2str(keys) - NullArgOptionKeys.collect{|opt| - if keys[opt] - keys[opt] = None - else - keys.delete(opt) - end - } - keys.collect{|k,v| - ['-' << k, v] - }.flatten - end - private :_photo_hash_kv - - # Create a new image with the given options. - # == Examples of use : - # === Create an empty image of 300x200 pixels - # - # image = TkPhotoImage.new(:height => 200, :width => 300) - # - # === Create an image from a file - # - # image = TkPhotoImage.new(:file: => 'my_image.gif') - # - # == Options - # Photos support the following options: - # * :data - # Specifies the contents of the image as a string. - # * :format - # Specifies the name of the file format for the data. - # * :file - # Gives the name of a file that is to be read to supply data for the image. - # * :gamma - # Specifies that the colors allocated for displaying this image in a window - # should be corrected for a non-linear display with the specified gamma - # exponent value. - # * height - # Specifies the height of the image, in pixels. This option is useful - # primarily in situations where the user wishes to build up the contents of - # the image piece by piece. A value of zero (the default) allows the image - # to expand or shrink vertically to fit the data stored in it. - # * palette - # Specifies the resolution of the color cube to be allocated for displaying - # this image. - # * width - # Specifies the width of the image, in pixels. This option is useful - # primarily in situations where the user wishes to build up the contents of - # the image piece by piece. A value of zero (the default) allows the image - # to expand or shrink horizontally to fit the data stored in it. - def initialize(*args) - @type = 'photo' - super(*args) - end - - # Blank the image; that is, set the entire image to have no data, so it will - # be displayed as transparent, and the background of whatever window it is - # displayed in will show through. - def blank - tk_send_without_enc('blank') - self - end - - def cget_strict(option) - case option.to_s - when 'data', 'file' - tk_send 'cget', '-' << option.to_s - else - tk_tcl2ruby(tk_send('cget', '-' << option.to_s)) - end - end - - # Returns the current value of the configuration option given by option. - # Example, display name of the file from which <tt>image</tt> was created: - # puts image.cget :file - def cget(option) - unless TkConfigMethod.__IGNORE_UNKNOWN_CONFIGURE_OPTION__ - cget_strict(option) - else - begin - cget_strict(option) - rescue => e - if current_configinfo.has_key?(option.to_s) - # error on known option - fail e - else - # unknown option - nil - end - end - end - end - - # Copies a region from the image called source to the image called - # destination, possibly with pixel zooming and/or subsampling. If no options - # are specified, this method copies the whole of source into destination, - # starting at coordinates (0,0) in destination. The following options may be - # specified: - # - # * :from [x1, y1, x2, y2] - # Specifies a rectangular sub-region of the source image to be copied. - # (x1,y1) and (x2,y2) specify diagonally opposite corners of the rectangle. - # If x2 and y2 are not specified, the default value is the bottom-right - # corner of the source image. The pixels copied will include the left and - # top edges of the specified rectangle but not the bottom or right edges. - # If the :from option is not given, the default is the whole source image. - # * :to [x1, y1, x2, y2] - # Specifies a rectangular sub-region of the destination image to be - # affected. (x1,y1) and (x2,y2) specify diagonally opposite corners of the - # rectangle. If x2 and y2 are not specified, the default value is (x1,y1) - # plus the size of the source region (after subsampling and zooming, if - # specified). If x2 and y2 are specified, the source region will be - # replicated if necessary to fill the destination region in a tiled fashion. - # * :shrink - # Specifies that the size of the destination image should be reduced, if - # necessary, so that the region being copied into is at the bottom-right - # corner of the image. This option will not affect the width or height of - # the image if the user has specified a non-zero value for the :width or - # :height configuration option, respectively. - # * :zoom [x, y] - # Specifies that the source region should be magnified by a factor of x - # in the X direction and y in the Y direction. If y is not given, the - # default value is the same as x. With this option, each pixel in the - # source image will be expanded into a block of x x y pixels in the - # destination image, all the same color. x and y must be greater than 0. - # * :subsample [x, y] - # Specifies that the source image should be reduced in size by using only - # every xth pixel in the X direction and yth pixel in the Y direction. - # Negative values will cause the image to be flipped about the Y or X axes, - # respectively. If y is not given, the default value is the same as x. - # * :compositingrule rule - # Specifies how transparent pixels in the source image are combined with - # the destination image. When a compositing rule of <tt>overlay</tt> is set, - # the old contents of the destination image are visible, as if the source - # image were printed on a piece of transparent film and placed over the - # top of the destination. When a compositing rule of <tt>set</tt> is set, - # the old contents of the destination image are discarded and the source - # image is used as-is. The default compositing rule is <tt>overlay</tt>. - def copy(src, *opts) - if opts.size == 0 - tk_send('copy', src) - elsif opts.size == 1 && opts[0].kind_of?(Hash) - tk_send('copy', src, *_photo_hash_kv(opts[0])) - else - # for backward compatibility - args = opts.collect{|term| - if term.kind_of?(String) && term.include?(?\s) - term.split - else - term - end - }.flatten - tk_send('copy', src, *args) - end - self - end - - # Returns image data in the form of a string. The following options may be - # specified: - # * :background color - # If the color is specified, the data will not contain any transparency - # information. In all transparent pixels the color will be replaced by the - # specified color. - # * :format format-name - # Specifies the name of the image file format handler to be used. - # Specifically, this subcommand searches for the first handler whose name - # matches an initial substring of format-name and which has the capability - # to read this image data. If this option is not given, this subcommand - # uses the first handler that has the capability to read the image data. - # * :from [x1, y1, x2, y2] - # Specifies a rectangular region of imageName to be returned. If only x1 - # and y1 are specified, the region extends from (x1,y1) to the bottom-right - # corner of imageName. If all four coordinates are given, they specify - # diagonally opposite corners of the rectangular region, including x1,y1 - # and excluding x2,y2. The default, if this option is not given, is the - # whole image. - # * :grayscale - # If this options is specified, the data will not contain color information. - # All pixel data will be transformed into grayscale. - def data(keys={}) - tk_split_list(tk_send('data', *_photo_hash_kv(keys))) - end - - # Returns the color of the pixel at coordinates (x,y) in the image as a list - # of three integers between 0 and 255, representing the red, green and blue - # components respectively. - def get(x, y) - tk_send('get', x, y).split.collect{|n| n.to_i} - end - - def put(data, *opts) - if opts.empty? - tk_send('put', data) - elsif opts.size == 1 && opts[0].kind_of?(Hash) - tk_send('put', data, *_photo_hash_kv(opts[0])) - else - # for backward compatibility - tk_send('put', data, '-to', *opts) - end - self - end - - def read(file, *opts) - if opts.size == 0 - tk_send('read', file) - elsif opts.size == 1 && opts[0].kind_of?(Hash) - tk_send('read', file, *_photo_hash_kv(opts[0])) - else - # for backward compatibility - args = opts.collect{|term| - if term.kind_of?(String) && term.include?(?\s) - term.split - else - term - end - }.flatten - tk_send('read', file, *args) - end - self - end - - def redither - tk_send 'redither' - self - end - - # Returns a boolean indicating if the pixel at (x,y) is transparent. - def get_transparency(x, y) - bool(tk_send('transparency', 'get', x, y)) - end - - # Makes the pixel at (x,y) transparent if <tt>state</tt> is true, and makes - # that pixel opaque otherwise. - def set_transparency(x, y, state) - tk_send('transparency', 'set', x, y, state) - self - end - - def write(file, *opts) - if opts.size == 0 - tk_send('write', file) - elsif opts.size == 1 && opts[0].kind_of?(Hash) - tk_send('write', file, *_photo_hash_kv(opts[0])) - else - # for backward compatibility - args = opts.collect{|term| - if term.kind_of?(String) && term.include?(?\s) - term.split - else - term - end - }.flatten - tk_send('write', file, *args) - end - self - end -end |