Class: Iup::ImageWidget

Inherits:
Widget
  • Object
show all
Defined in:
lib/wrapped/image.rb

Overview

Parent class of images provides common attributes.

Attributes

assign_handle

write-only sets the name for referring to image.

bpp

read-only Returns the number of bits per pixel.

channels

read-only Returns the number of channels.

color

index, “r g b” -> gets/sets colour index. (Used only in 8-bit images created using Image)

colour

index, “r g b” -> gets/sets colour index. (Used only in 8-bit images created using Image)

height

read-only Height of the image, in pixels.

hotspot

“x:y”, coordinates of spot in image used for mouse click. Default is “0:0”.

rastersize

read-only Size of the image, in pixels, value as “widthxheight”.

wid

read-only Native widget identifier.

width

read-only Width of the image, in pixels.

Direct Known Subclasses

Image, ImageRGB, ImageRGBA

Instance Attribute Summary

Attributes inherited from Widget

#handle

Instance Method Summary collapse

Methods inherited from Widget

#assign_handle, #enterwindow_cb, #getfocus_cb, #help_cb, #k_any, #killfocus_cb, #leavewindow_cb, #map_cb, #open_controls, #unmap_cb

Methods included from AttributeBuilders

#define_attribute, #define_id_attribute, #define_id_readonly, #define_id_writeonly, #define_property_attribute, #define_property_writeonly, #define_readonly, #define_writeonly

Methods included from CallbackSetter

#define_callback

Instance Method Details

#color(index, value) ⇒ Object

:nodoc:



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# File 'lib/wrapped/image.rb', line 37

def color index, value # :nodoc:
  colour index, value
end

#colour(index, value) ⇒ Object

:nodoc:



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# File 'lib/wrapped/image.rb', line 33

def colour index, value #:nodoc:
  IupLib.IupSetAttribute @handle, index.to_s, value
end

#save(filename, format = 'png') ⇒ Object

Saves image to given filename. Optional format is one of: “BMP”, “JPEG”, “GIF”, “TIFF”, “PNG”, “PNM”, “PCX”, “ICO”, etc.



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# File 'lib/wrapped/image.rb', line 49

def save filename, format = 'png'
  err = IupIm.IupSaveImage @handle, filename, format
  if err.zero?
    raise Exception, 'Could not save image as file'
  end
end