mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-10-03 20:47:32 +00:00
7a4c689387
2000-10-18 Havoc Pennington <hp@redhat.com> * gtk/gtk-sections.txt: Some updates * gdk/gdk-sections.txt: remove GdkPixbufAlphaMode * gdk-pixbuf/gdk-pixbuf-sections.txt: Add new API, remove GdkPixbufClass/GdkAnimationClass since those are private * gdk-pixbuf/Makefile.am (IGNORE_HFILES): ignore more headers 2000-10-18 Havoc Pennington <hp@redhat.com> * gtk/gtktextiter.c (gtk_text_iter_forward_to_newline): Fix a bug where any number of empty lines would get skipped * gtk/gtktextiter.h: Remove padding from GtkTextIter; live on the edge. * gtk/gtktextiter.c (gtk_text_iter_make_surreal): enhance the warning about invalid iterators (explain more thoroughly) (gtk_text_iter_in_region): rename gtk_text_iter_in_range * gtk/gtktextview.c (FOCUS_EDGE_WIDTH): Make focus rectangle less big * demos/*.c: Add error handling * gtk/gtktextbuffer.c: don't modify const iterators * gtk/gdk-pixbuf-loader.c: Add full error handling here * gtk/gtkimage.c (gtk_image_set_from_file): ignore errors on file load * gtk/gtkiconfactory.c: Update to reflect addition of error handling to gdk-pixbuf loaders 2000-10-16 Havoc Pennington <hp@redhat.com> * gdk-pixbuf-io.c (gdk_pixbuf_get_module) (gdk_pixbuf_get_named_module) (gdk_pixbuf_load_module): add error reporting here also * make-inline-pixbuf.c (main): use GError * io-xpm.c: include unistd.h * gdk-pixbuf-util.c: include string.h * io-*.c: add error reporting * gdk-pixbuf-animation.c (gdk_pixbuf_animation_new_from_file): add error reporting * gdk-pixbuf-io.c (gdk_pixbuf_new_from_file): Add error reporting * gdk-pixbuf-io.h: Add GError** to load_increment and load methods * gdk-pixbuf-io.c (gdk_pixbuf_save) (gdk_pixbuf_savev): return a G_FILE_ERROR if we fail to write or close the file. * gdk-pixbuf.h: remove GDK_PIXBUF_ERROR_IO, instead we'll use G_FILE_ERROR_*. Rename enum to GdkPixbufError, properly following the GError naming rules. Add GError** to load functions.
111 lines
2.4 KiB
Plaintext
111 lines
2.4 KiB
Plaintext
<!-- ##### SECTION Title ##### -->
|
|
Image Data in Memory
|
|
|
|
<!-- ##### SECTION Short_Description ##### -->
|
|
Creating a pixbuf from image data that is already in memory.
|
|
|
|
<!-- ##### SECTION Long_Description ##### -->
|
|
<para>
|
|
The most basic way to create a pixbuf is to wrap an existing pixel
|
|
buffer with a #GdkPixbuf structure. You can use the
|
|
gdk_pixbuf_new_from_data() function to do this You need to specify
|
|
the destroy notification function that will be called when the
|
|
data buffer needs to be freed; this will happen when a #GdkPixbuf
|
|
is finalized by the reference counting functions If you have a
|
|
chunk of static data compiled into your application, you can pass
|
|
in #NULL as the destroy notification function so that the data
|
|
will not be freed.
|
|
</para>
|
|
|
|
<para>
|
|
The gdk_pixbuf_new() function can be used as a convenience to
|
|
create a pixbuf with an empty buffer. This is equivalent to
|
|
allocating a data buffer using malloc() and then wrapping it with
|
|
gdk_pixbuf_new_from_data(). The gdk_pixbuf_new() function will
|
|
compute an optimal rowstride so that rendering can be performed
|
|
with an efficient algorithm.
|
|
</para>
|
|
|
|
<para>
|
|
As a special case, you can use the gdk_pixbuf_new_from_xpm_data()
|
|
function to create a pixbuf from inline XPM image data.
|
|
</para>
|
|
|
|
<para>
|
|
You can also copy an existing pixbuf with the gdk_pixbuf_copy()
|
|
function. This is not the same as just doing a gdk_pixbuf_ref()
|
|
on the old pixbuf; the copy function will actually duplicate the
|
|
pixel data in memory and create a new #GdkPixbuf structure for it.
|
|
</para>
|
|
|
|
<!-- ##### SECTION See_Also ##### -->
|
|
<para>
|
|
gdk_pixbuf_finalize().
|
|
</para>
|
|
|
|
<!-- ##### FUNCTION gdk_pixbuf_new ##### -->
|
|
<para>
|
|
|
|
</para>
|
|
|
|
@colorspace:
|
|
@has_alpha:
|
|
@bits_per_sample:
|
|
@width:
|
|
@height:
|
|
@Returns:
|
|
|
|
|
|
<!-- ##### FUNCTION gdk_pixbuf_new_from_data ##### -->
|
|
<para>
|
|
|
|
</para>
|
|
|
|
@data:
|
|
@colorspace:
|
|
@has_alpha:
|
|
@bits_per_sample:
|
|
@width:
|
|
@height:
|
|
@rowstride:
|
|
@destroy_fn:
|
|
@destroy_fn_data:
|
|
@Returns:
|
|
|
|
|
|
<!-- ##### FUNCTION gdk_pixbuf_new_from_xpm_data ##### -->
|
|
<para>
|
|
|
|
</para>
|
|
|
|
@data:
|
|
@Returns:
|
|
|
|
|
|
<!-- ##### FUNCTION gdk_pixbuf_new_from_inline ##### -->
|
|
<para>
|
|
|
|
</para>
|
|
|
|
@inline_pixbuf:
|
|
@copy_pixels:
|
|
@length:
|
|
@error:
|
|
@Returns:
|
|
|
|
|
|
<!-- ##### FUNCTION gdk_pixbuf_copy ##### -->
|
|
<para>
|
|
|
|
</para>
|
|
|
|
@pixbuf:
|
|
@Returns: <!--
|
|
Local variables:
|
|
mode: sgml
|
|
sgml-parent-document: ("../gdk-pixbuf.sgml" "book" "refsect2" "")
|
|
End:
|
|
-->
|
|
|
|
|