Pix¶

Images resources.

• Table of contents
• Pix
  • _gtkPixNew
  • _gtkPixFree
  • _gtkPixScale
  • _gtkPixScaleEx
  • _gtkPixRotate
  • _gtkPixFlip
  • _gtkPixAddAlpha

_gtkPixNew¶

create a new pix object

Prototype : fun [Chn P I [I I I]] ObjGtkPix

channel	Chn	a channel
filename	P	an image filename
mode	I	Mode. Should be at 0.
tuple	[I I I]	the width (or nil to not constraint it),
		the height (or nil to not constraint it),
		the ratio (1 to keep it)

Return : ObjGtkPix : a new pix object or nil if an error occurs

_gtkPixFree¶

Destroys a pix object

Prototype : fun [ObjGtkPix] I

Return : I : always 0 except if error, it returns nil

_gtkPixScale¶

Scale

Prototype : fun [ObjGtkPix I I I I] ObjGtkPix

pix	ObjGtkPix	a valid pix object
width	I	the new width
height	I	the new height
mode	I	an algorithm at your choice :	SCOL_GTK_PIX_INTERP_BILINEAR (default) :
			SCOL_GTK_PIX_INTERP_NEAREST :
			SCOL_GTK_PIX_INTERP_TILES :
			SCOL_GTK_PIX_INTERP_HYPER :
flag	I	if 1, the pix in the pix object pix will be destroyed.	If 0, the pix object pix will be kept and a new pix object will be created.

Return : ObjGtkPix : a new pix object or nil if an error occurs.

_gtkPixScaleEx¶

Not implemented yet.

Return : always nil.

_gtkPixRotate¶

Performs a rotation

Prototype : fun [ObjGtkPix I I] ObjGtkPix

pix	ObjGtkPix	a pix object
angle	I	0, 90, 180 or 270 degrees. Others values are ignored
flag	I	0 if the new pix Scol object is created with the rotated pix
		1 if the new pix replaces the pix in the curent pix object pix

Return : ObjGtkPix : a rotated pix in the (new or same) pix object or the same pix object if the value is bad or nil if an error occurs

_gtkPixFlip¶

Performs a flip to a pix object

Prototype : fun [ObjGtkPix I I] ObjGtkPix

pix	ObjGtkPix	a pix object
flip	I	SCOL_GTK_PIX_FLIP_HORIZONTAL or SCOL_GTK_PIX_FLIP_VERTICAL. Other value are ignored.
flag	I	0 if the new pix Scol object is created with the flipped pix
		1 if the new pix replaces the pix in the curent pix object pix

Return : ObjGtkPix : a flipped pix in the (new or same) pix object or the same pix object if the value is bad or nil if an error occurs

_gtkPixAddAlpha¶

Adds an alpha channel to an existing pix object.
If the tuple is not nil, then the color specified by it will be assigned zero opacity.
For example, if the tuple is equals at [255, 255, 255], all white pixels will become fully transparent.

Prototype : fun [ObjGtkPix [I I I] I] ObjGtkPix

pix	ObjGtkPix	a pix object
rgb	[I I I]	red, green and blue value (0->255). or nil (see above)
flag	I	0 if the new pix Scol object is created with the new pix
		1 if the new pix replaces the pix in the curent pix object pix

Return : ObjGtkPix : a new pix in the (new or same) pix object or the same pix object if the value is bad or nil if an error occurs

Return Api