1Gtk2::Gdk::Image(3)   User Contributed Perl Documentation  Gtk2::Gdk::Image(3)
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NAME

6       Gtk2::Gdk::Image - wrapper for GdkImage
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DESCRIPTION

9       A "Gtk2::Gdk::Image" is a 2-D array of pixel values in client-side
10       memory.  It can optionally use shared memory with the X server for fast
11       copying to or from a window or pixmap.
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13       If you're thinking of using this then look at "Gtk2::Gdk::Pixbuf"
14       first.  GdkPixbuf has many more features, in particular file read and
15       write (PNG, JPEG, etc).  But a GdkImage lets you work directly in pixel
16       values instead of expanding to RGB components.
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18       See Gtk2::Gdk::Drawable for "draw_image", "get_image" and
19       "copy_to_image" methods to draw or fetch images to or from a window or
20       pixmap.
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22       The various "get" methods are Gtk 2.22 style.  For previous versions
23       they're direct field access.
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HIERARCHY

26         Glib::Object
27         +----Gtk2::Gdk::Image
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METHODS

30   image or undef = Gtk2::Gdk::Image->new ($type, $visual, $width, $height)
31       ·   $type (Gtk2::Gdk::ImageType)
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33       ·   $visual (Gtk2::Gdk::Visual)
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35       ·   $width (integer)
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37       ·   $height (integer)
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39   integer = $image->get_bits_per_pixel
40   byteorder = $image->get_byte_order
41   integer = $image->get_bytes_per_line
42   integer = $image->get_bytes_per_pixel
43   colormap = $image->get_colormap
44   $image->set_colormap ($colormap)
45       ·   $colormap (Gtk2::Gdk::Colormap)
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47   integer = $image->get_depth
48   integer = $image->get_height
49   imagetype = $image->get_image_type
50   unsigned = $image->get_pixel ($x, $y)
51       ·   $x (integer)
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53       ·   $y (integer)
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55   string = $image->get_pixels()
56       Return a copy of the raw pixel data memory from $image.  This is
57       "bytes_per_line * height" many bytes.
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59   $image->put_pixel ($x, $y, $pixel)
60       ·   $x (integer)
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62       ·   $y (integer)
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64       ·   $pixel (unsigned)
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66   visual = $image->get_visual
67   integer = $image->get_width

ENUMS AND FLAGS

69   enum Gtk2::Gdk::ByteOrder
70       ·   'lsb-first' / 'GDK_LSB_FIRST'
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72       ·   'msb-first' / 'GDK_MSB_FIRST'
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74   enum Gtk2::Gdk::ImageType
75       ·   'normal' / 'GDK_IMAGE_NORMAL'
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77       ·   'shared' / 'GDK_IMAGE_SHARED'
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79       ·   'fastest' / 'GDK_IMAGE_FASTEST'
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SEE ALSO

82       Gtk2, Glib::Object
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85       Copyright (C) 2003-2011 by the gtk2-perl team.
86
87       This software is licensed under the LGPL.  See Gtk2 for a full notice.
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91perl v5.30.1                      2020-01-30               Gtk2::Gdk::Image(3)
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