Visual

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Object Hierarchy:

Description:

Content:

Static methods:

• public static weak Visual get_best ()
  Get the visual with the most available colors for the default GDK screen. The return value should not be freed.
• public static int get_best_depth ()
  Get the best available depth for the default GDK screen. "Best" means "largest," i.e. 32 preferred over 24 preferred over 8 bits per pixel.
• public static VisualType get_best_type ()
  Return the best available visual type for the default GDK screen.
• public static weak Visual get_best_with_both (int depth, VisualType visual_type)
  Combines get_best_with_depth and get_best_with_type.
• public static weak Visual get_best_with_depth (int depth)
  Get the best visual with depth depth for the default GDK screen. Color visuals and visuals with mutable colormaps are preferred over grayscale or fixed-colormap visuals. The return value should not be freed. null may be returned if no visual supports depth.
• public static weak Visual get_best_with_type (VisualType visual_type)
  Get the best visual of the given visual_type for the default GDK screen. Visuals with higher color depths are considered better. The return value should not be freed. null may be returned if no visual has type visual_type.
• public static weak Visual get_system ()
  Get the system's default visual for the default GDK screen. This is the visual for the root window of the display. The return value should not be freed.

Creation methods:

• protected Visual ()

Methods:

• public int get_bits_per_rgb ()
  Returns the number of significant bits per red, green and blue value.
• public void get_blue_pixel_details (uint32 mask, int shift, int precision)
  Obtains values that are needed to calculate blue pixel values in TrueColor and DirectColor. The "mask" is the significant bits within the pixel. The "shift" is the number of bits left we must shift a primary for it to be in position (according to the "mask"). Finally, "precision" refers to how much precision the pixel value contains for a particular primary.
• public ByteOrder get_byte_order ()
  Returns the byte order of this visual.
• public int get_colormap_size ()
  Returns the size of a colormap for this visual.
• public int get_depth ()
  Returns the bit depth of this visual.
• public void get_green_pixel_details (uint32 mask, int shift, int precision)
  Obtains values that are needed to calculate green pixel values in TrueColor and DirectColor. The "mask" is the significant bits within the pixel. The "shift" is the number of bits left we must shift a primary for it to be in position (according to the "mask"). Finally, "precision" refers to how much precision the pixel value contains for a particular primary.
• public void get_red_pixel_details (uint32 mask, int shift, int precision)
  Obtains values that are needed to calculate red pixel values in TrueColor and DirectColor. The "mask" is the significant bits within the pixel. The "shift" is the number of bits left we must shift a primary for it to be in position (according to the "mask"). Finally, "precision" refers to how much precision the pixel value contains for a particular primary.
• public weak Screen get_screen ()
  Gets the screen to which this visual belongs
• public VisualType get_visual_type ()
  Returns the type of visual this is (PseudoColor, TrueColor, etc).

Fields:

• public int bits_per_rgb
• public uint32 blue_mask
• public int blue_prec
• public int blue_shift
• public ByteOrder byte_order
• public int colormap_size
• public int depth
• public uint32 green_mask
• public int green_prec
• public int green_shift
• public uint32 red_mask
• public int red_prec
• public int red_shift
• public VisualType type