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| Gtk2::Gdk::Image(3) | User Contributed Perl Documentation | Gtk2::Gdk::Image(3) |
NAME
Gtk2::Gdk::Image - wrapper for GdkImageDESCRIPTION
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::ObjectCOPYRIGHT
Copyright (C) 2003-2011 by the gtk2-perl team.This software is licensed under the LGPL. See Gtk2 for a full notice.
| 2022-06-07 | perl v5.32.1 |
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