gdk-pixbuf-unused.sgml

linux下电话本所依赖的一些图形库

<!-- ##### SECTION ./tmpl/xlib-init.sgml:See_Also ##### -->
  <para>
    XlibRGB
  </para>


<!-- ##### SECTION ./tmpl/xlib-init.sgml:Short_Description ##### -->
Initializing the &gdk-pixbuf; Xlib library.


<!-- ##### SECTION ./tmpl/xlib-init.sgml:Title ##### -->
&gdk-pixbuf; Xlib initialization


<!-- ##### SECTION ./tmpl/xlib-rendering.sgml:Long_Description ##### -->
  <para>
    The &gdk-pixbuf; Xlib library provides several convenience
    functions to render pixbufs to X drawables.  It uses XlibRGB to
    render the image data.
  </para>

  <para>
    These functions are analogous to those for the Gdk version of
    &gdk-pixbuf;.
  </para>


<!-- ##### SECTION ./tmpl/xlib-rendering.sgml:See_Also ##### -->
<para>

</para>


<!-- ##### SECTION ./tmpl/xlib-rendering.sgml:Short_Description ##### -->
Rendering a pixbuf to an X drawable.


<!-- ##### SECTION ./tmpl/xlib-rendering.sgml:Title ##### -->
Xlib Rendering


<!-- ##### SECTION ./tmpl/xlib-rgb.sgml:Long_Description ##### -->
  <para>
    The XlibRGB set of functions is a port of the GdkRGB library to
    use plain Xlib and X drawables.  You can use these functions to
    render RGB buffers into drawables very quickly with high-quality
    dithering.
  </para>


<!-- ##### SECTION ./tmpl/xlib-rgb.sgml:See_Also ##### -->
  <para>
    GdkRGB
  </para>


<!-- ##### SECTION ./tmpl/xlib-rgb.sgml:Short_Description ##### -->
Functions for rendering RGB buffers to X drawables.


<!-- ##### SECTION ./tmpl/xlib-rgb.sgml:Title ##### -->
XlibRGB


<!-- ##### MACRO GDK_PIXBUF_LOADER ##### -->
  <para>
    Casts a #GtkObject to a #GdkPixbufLoader.
  </para>

@obj: A GTK+ object.

<!-- ##### MACRO GNOME_CANVAS_PIXBUF ##### -->
  <para>
    Casts a #GtkOjbect to a #GnomeCanvasPixbuf.
  </para>

@obj: A GTK+ object.

<!-- ##### STRUCT GdkPixbufFrame ##### -->
<para>
 This object describes an individual frame of an animation.
</para>


<!-- ##### ENUM GdkPixbufFrameAction ##### -->
<para>

</para>

@GDK_PIXBUF_FRAME_RETAIN: 
@GDK_PIXBUF_FRAME_DISPOSE: 
@GDK_PIXBUF_FRAME_REVERT: 

<!-- ##### USER_FUNCTION GdkPixbufLastUnref ##### -->
  <para>
    A function of this type can be used to override the default
    operation when a pixbuf loses its last reference, i.e. when
    gdk_pixbuf_unref() is called on a #GdkPixbuf structure that has a
    reference count of 1.  This function should determine whether to
    finalize the pixbuf by calling gdk_pixbuf_finalize(), or whether
    to just resume normal execution.  The last unref handler for a
    #GdkPixbuf can be set using the
    gdk_pixbuf_set_last_unref_handler() function.  By default, pixbufs
    will be finalized automatically if no last unref handler has been
    defined.
  </para>

@pixbuf: The pixbuf that is losing its last reference.
@data: User closure data.

<!-- ##### ARG GnomeCanvasPixbuf:height ##### -->
  <para>
    Indicates the height the pixbuf will be scaled to.  This argument
    will only be used if the <link
    linkend="GnomeCanvasPixbuf--height-set">height_set</link> argument
    is %TRUE.  Works in the same way as the <link
    linkend="GnomeCanvasPixbuf--width">width</link> argument.
  </para>


<!-- ##### ARG GnomeCanvasPixbuf:height-in-pixels ##### -->
  <para>
    Works in the same way as the <link
    linkend="GnomeCanvasPixbuf--width-in-pixels">width_in_pixels</link>
    argument.  The default is %FALSE.
  </para>


<!-- ##### ARG GnomeCanvasPixbuf:height-pixels ##### -->
<para>

</para>


<!-- ##### ARG GnomeCanvasPixbuf:height-set ##### -->
  <para>
    Determines whether the <link
    linkend="GnomeCanvasPixbuf--height">height</link> argument is
    taken into account when scaling the pixbuf item.  Works in the
    same way as the <link
    linkend="GnomeCanvasPixbuf--width-set">width_set</link> argument.
    The default is %FALSE.
  </para>


<!-- ##### ARG GnomeCanvasPixbuf:pixbuf ##### -->
  <para>
    Contains a pointer to a #GdkPixbuf structure that will be used by
    the pixbuf canvas item as an image source.  When a pixbuf is set
    its reference count is incremented; if the pixbuf item kept a
    pointer to another #GdkPixbuf structure, the reference count of
    this structure will be decremented.  Also, the GdkPixbuf's
    reference count will automatically be decremented when the
    #GnomeCanvasPixbuf item is destroyed.  When a pixbuf is queried, a
    reference count will not be added to the return value; you must do
    this yourself if you intend to keep the pixbuf structure around.
  </para>


<!-- ##### ARG GnomeCanvasPixbuf:width ##### -->
  <para>
    Indicates the width the pixbuf will be scaled to.  This argument
    will only be used if the <link
    linkend="GnomeCanvasPixbuf--width-set">width_set</link> argument
    is %TRUE.  If the <link
    linkend="GnomeCanvasPixbuf--width-in-pixels">width_in_pixels</link>
    argument is %FALSE, the width will be taken to be in canvas units,
    and thus will be scaled along with the canvas item's affine
    transformation.  If width_in_pixels is %TRUE, the width will be
    taken to be in pixels, and will visually remain a constant size
    even if the item's affine transformation changes.
  </para>


<!-- ##### ARG GnomeCanvasPixbuf:width-in-pixels ##### -->
  <para>
    If this argument is %TRUE, then the width of the pixbuf will be
    considered to be in pixels, that is, it will not be visually
    scaled even if the item's affine transformation changes.  If this
    is %FALSE, then the width of the pixbuf will be considered to be
    in canvas units, and so will be scaled normally by affine
    transformations.  The default is %FALSE.
  </para>


<!-- ##### ARG GnomeCanvasPixbuf:width-pixels ##### -->
<para>

</para>


<!-- ##### ARG GnomeCanvasPixbuf:width-set ##### -->
  <para>
    Determines whether the <link
    linkend="GnomeCanvasPixbuf--width">width</link> argument is taken
    into account when scaling the pixbuf item.  If this argument is
    %FALSE, then the width value of the pixbuf will be used instead.
    This argument is %FALSE by default.
  </para>


<!-- ##### ARG GnomeCanvasPixbuf:x ##### -->
  <para>
    Indicates the horizontal translation offset of the pixbuf item's
    image.  This offset may not actually appear horizontal, since it
    will be affected by the item's affine transformation.  The default
    is 0.0.
  </para>


<!-- ##### ARG GnomeCanvasPixbuf:x-in-pixels ##### -->
  <para>
    If this argument is %TRUE, the pixbuf's translation with respect
    to its logical origin in item-relative coordinates will be in
    pixels, that is, the visible offset will not change even if the
    item's affine transformation changes.  If it is %FALSE, the
    pixbuf's translation will be taken to be in canvas units, and thus
    will change along with the item's affine transformation.  The
    default is %FALSE.
  </para>


<!-- ##### ARG GnomeCanvasPixbuf:x-pixels ##### -->
<para>

</para>


<!-- ##### ARG GnomeCanvasPixbuf:x-set ##### -->
  <para>
    Determines whether the <link
    linkend="GnomeCanvasPixbuf--x">x</link> argument is used to
    translate the pixbuf from its logical origin in item-relative
    coordinates.
  </para>


<!-- ##### ARG GnomeCanvasPixbuf:y ##### -->
  <para>
    Indicates the vertical translation offset of the pixbuf item's
    image.  Works in the same way as the <link
    linkend="GnomeCanvasPixbuf--x">x</link> argument.  The default is
    0.0.
  </para>


<!-- ##### ARG GnomeCanvasPixbuf:y-in-pixels ##### -->
  <para>
    Works in the same way as the <link
    linkend="GnomeCanvasPixbuf--x-in-pixels">x_in_pixels</link>
    argument, but controls whether the <link
    linkend="GnomeCanvasPixbuf--y">y</link> translation offset is
    scaled or not.  The default is %FALSE.
  </para>

<!--
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sgml-parent-document: ("../gdk-pixbuf.sgml" "book" "refsect2" "")
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-->


<!-- ##### ARG GnomeCanvasPixbuf:y-pixels ##### -->
<para>

</para>


<!-- ##### ARG GnomeCanvasPixbuf:y-set ##### -->
  <para>
    Determines whether the <link
    linkend="GnomeCanvasPixbuf--y">y</link> argument is used to
    translate the pixbuf from its logical origin in item-relative
    coordinates.  Works in the same way as the <link
    linkend="GnomeCanvasPixbuf--x-set">x_set</link> argument.  The
    default is %FALSE.
  </para>


<!-- ##### FUNCTION gdk_pixbuf_new_from_stream ##### -->
<para>

</para>

@stream_length: 
@stream: 
@copy_pixels: 
@error: 
@Returns: