NAME¶
Gtk2::Gdk::Image - wrapper for GdkImage
DESCRIPTION¶
A "Gtk2::Gdk::Image" is a 2-D array of pixel values in client-side
memory. It can optionally use shared memory with the X server for fast copying
to or from a window or pixmap.
If you're thinking of using this then look at "Gtk2::Gdk::Pixbuf"
first. GdkPixbuf has many more features, in particular file read and write
(PNG, JPEG, etc). But a GdkImage lets you work directly in pixel values
instead of expanding to RGB components.
See Gtk2::Gdk::Drawable for "draw_image", "get_image" and
"copy_to_image" methods to draw or fetch images to or from a window
or pixmap.
The various "get" methods are Gtk 2.22 style. For previous versions
they're direct field access.
HIERARCHY¶
Glib::Object
+----Gtk2::Gdk::Image
METHODS¶
image or undef = Gtk2::Gdk::Image->new ($type, $visual,
$width, $height)¶
- •
- $type (Gtk2::Gdk::ImageType)
- •
- $visual (Gtk2::Gdk::Visual)
- •
- $width (integer)
- •
- $height (integer)
integer = $image->get_bits_per_pixel¶
byteorder = $image->get_byte_order¶
integer = $image->get_bytes_per_line¶
integer = $image->get_bytes_per_pixel¶
colormap = $image->get_colormap¶
$image->set_colormap ($colormap)¶
- •
- $colormap (Gtk2::Gdk::Colormap)
integer = $image->get_depth¶
integer = $image->get_height¶
imagetype = $image->get_image_type¶
unsigned = $image->get_pixel ($x, $y)¶
- •
- $x (integer)
- •
- $y (integer)
string = $image->get_pixels()¶
Return a copy of the raw pixel data memory from $image. This is
"bytes_per_line * height" many bytes.
$image->put_pixel ($x, $y, $pixel)¶
- •
- $x (integer)
- •
- $y (integer)
- •
- $pixel (unsigned)
visual = $image->get_visual¶
integer = $image->get_width¶
ENUMS AND FLAGS¶
enum Gtk2::Gdk::ByteOrder¶
- •
- 'lsb-first' / 'GDK_LSB_FIRST'
- •
- 'msb-first' / 'GDK_MSB_FIRST'
enum Gtk2::Gdk::ImageType¶
- •
- 'normal' / 'GDK_IMAGE_NORMAL'
- •
- 'shared' / 'GDK_IMAGE_SHARED'
- •
- 'fastest' / 'GDK_IMAGE_FASTEST'
SEE ALSO¶
Gtk2, Glib::Object
COPYRIGHT¶
Copyright (C) 2003-2011 by the gtk2-perl team.
This software is licensed under the LGPL. See Gtk2 for a full notice.
