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FXVisual.rb 2.2 KiB
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  • module Fox
      #
      # An FXVisual instance describes the pixel format for a drawable (i.e. an FXDrawable instance).
      #
      # === Construction options for FXVisual
      #
      # +VISUAL_DEFAULT+::		Default visual
      # +VISUAL_MONOCHROME+::	Must be monochrome visual
      # +VISUAL_BEST+::		Best (deepest) visual
      # +VISUAL_INDEXCOLOR+::	Palette visual
      # +VISUAL_GRAYSCALE+::	Gray scale visual
      # +VISUAL_TRUECOLOR+::	Must be true color visual
      # +VISUAL_OWNCOLORMAP+::	Allocate private colormap
      # +VISUAL_DOUBLEBUFFER+::	Double-buffered [FXGLVisual]
      # +VISUAL_STEREO+::		Stereo [FXGLVisual]
      # +VISUAL_NOACCEL+::		No hardware acceleration [for broken h/w]
      # +VISUAL_SWAP_COPY+::	Buffer swap by copying (for FXGLVisual)
      #
      # === Visual type
      #
      # +VISUALTYPE_UNKNOWN+::	Undetermined visual type
      # +VISUALTYPE_MONO+::		Visual for drawing into 1-bpp surfaces
      # +VISUALTYPE_TRUE+::		True color
      # +VISUALTYPE_INDEX+::	Index [palette] color
      # +VISUALTYPE_GRAY+::		Gray scale
      #
      class FXVisual < FXId
        # Visual construction flags [Integer]
        attr_reader :flags
    
        # Visual depth, i.e. number of significant bits in color representation [Integer]
        attr_reader :depth
    
        # Number of colors [Integer]
        attr_reader :numColors
    
        # Number of bits of red [Integer]
        attr_reader :numRed
    
        # Number of bits of green [Integer]
        attr_reader :numGreen
    
        # Number of bits of blue [Integer]
        attr_reader :numBlue
    
        # Maximum number of colors [Integer]
        attr_accessor :maxColors
        
        #
        # The visual type, one of +VISUALTYPE_MONO+, +VISUALTYPE_TRUE+
        # +VISUALTYPE_INDEX+ or +VISUALTYPE_GRAY+. The visual type
        # may also be +VISUALTYPE_UNKNOWN+ before the visual is actually
        # created.
        #
        attr_reader :visualType
    
        #
        # Return an initialized FXVisual instance.
        #
        # ==== Parameters:
        #
        # +a+::	an application instance [FXApp]
        # +flgs+::	visual construction flags [Integer]
        # +d+::	requested visual depth, in bits [Integer]
        #
        def initialize(a, flgs, d=32); end
      
        #
        # Get device pixel value for color value _clr_.
        #
        def getPixel(clr); end
      
        #
        # Get color value for device pixel value _pix_.
        #
        def getColor(pix); end
      end
    end