Gtk2::Gdk::Image − wrapper for GdkImage
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.
Glib::Object
+−−−−Gtk2::Gdk::Image
image or undef = Gtk2::Gdk::Image−>new ($type, $visual, $width, $height)
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$type (Gtk2::Gdk::ImageType) |
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$visual (Gtk2::Gdk::Visual) |
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$width (integer) |
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$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)
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$colormap (Gtk2::Gdk::Colormap) |
integer =
$image−>get_depth
integer = $image−>get_height
imagetype = $image−>get_image_type
unsigned = $image−>get_pixel ($x, $y)
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$x (integer) |
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$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, $pixel)
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$x (integer) |
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$y (integer) |
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$pixel (unsigned) |
visual =
$image−>get_visual
integer = $image−>get_width
enum Gtk2::Gdk::ByteOrder
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’lsb−first’ / ’ GDK_LSB_FIRST ’ |
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’msb−first’ / ’ GDK_MSB_FIRST ’ |
enum Gtk2::Gdk::ImageType
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’normal’ / ’ GDK_IMAGE_NORMAL ’ |
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’shared’ / ’ GDK_IMAGE_SHARED ’ |
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’fastest’ / ’ GDK_IMAGE_FASTEST ’ |
Gtk2, Glib::Object
Copyright (C) 2003−2011 by the gtk2−perl team.
This software is licensed under the LGPL. See Gtk2 for a full notice.