PHP-GTK : PHP-GTK 2 Manual : GdkPixbuf

GdkPixbuf

An object holding information about images in memory.

Object Hierarchy

GObject
GdkPixbuf

Description

A GdkPixbuf is an object that holds information about a whole image (all the color values [red/green/blue/alpha] for every single pixel) in memory.

Pixbufs can be created by loading an image file via GdkPixbuf::new_from_file, by using a given GD image object as source (GdkPixbuf::new_from_gd) or just using the normal constructor, creating an empty image.

A GdkPixbuf itself just contains the information, it does not display it in any way. To display an image in your application, you most likely want to use a GtkImage which uses a GdkPixbuf as source.

Constructors

GdkPixbuf (GdkColorspace colorspace, bool has_alpha, int bits_per_sample, int width, int height);
-- Creates an empty image with the desired size.

GdkPixbuf::new_from_file (string filename);
-- Creates a pixbuf based on an image file.

GdkPixbuf::new_from_file_at_size (string filename, int width, int height);
-- Load an image file and scales it to the given size.

GdkPixbuf::new_from_xpm_data ( data);
--

GdkPixbuf::new_from_gd ( gd_image);
-- Create a pixbuf based on a GD image object

Methods

add_alpha()
FIXME: Method parameters need to be fixed in the source.
composite()

composite_color()

composite_color_simple()

copy()

copy_area()

fill()
Fill the whole image with a color.
fill_area()
Fills a given area with a color.
get_bits_per_sample()
Returns the number of bits per color value.
get_colorspace()
Returns the color space of the pixbuf.
get_from_drawable()

get_from_image()

get_has_alpha()
If the image has an alpha channel.
get_height()
Returns the height of the image.
get_n_channels()
Queries the number of channels of a pixbuf.
get_option()
Look up a key in the option list.
get_pixel()
Returns the color of a single pixel
get_pixels()
Returns the bytes of the image in memory
get_rowstride()
Returns the number of bytes between rows.
get_width()
Returns the width of the image.
put_pixel()
Fill a given pixel with a color.
render_pixmap_and_mask()

render_to_drawable()

render_to_drawable_alpha()

saturate_and_pixelate()

save()
Save the pixbuf into a file.
scale()

scale_simple()
Scales the image to a given size.
subpixbuf()

Fields

pixel_array:

	Friday, May 24, 2013
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