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gdk_rgb_init() doesn't need to be called anymore. Use g_object_(un)_ref
2001-11-03 Sebastian Wilhelmi <wilhelmi@ira.uka.de> * gdk-pixbuf/tmpl/refcounting.sgml, gdk-pixbuf/porting-from-imlib.sgml, tmpl/creating.sgml: gdk_rgb_init() doesn't need to be called anymore. Use g_object_(un)_ref instead of gdk_pixbuf_(un)ref. * tmpl/module_interface.sgml: Typo fix. * gdk-pixbuf/gdk-pixbuf.sgml: Fixed jade complaining about '_' by replacing it with '-'. Now builds again. * gdk-pixbuf-loader.c, gdk-pixbuf-scale.c: Documentation fixes.
This commit is contained in:
Sebastian Wilhelmi
Sebastian Wilhelmi
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commit
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@ -1,3 +1,15 @@
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2001-11-03 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
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* gdk-pixbuf/tmpl/refcounting.sgml,
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gdk-pixbuf/porting-from-imlib.sgml, tmpl/creating.sgml:
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gdk_rgb_init() doesn't need to be called anymore. Use
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g_object_(un)_ref instead of gdk_pixbuf_(un)ref.
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* tmpl/module_interface.sgml: Typo fix.
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* gdk-pixbuf/gdk-pixbuf.sgml: Fixed jade complaining about '_' by
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replacing it with '-'. Now builds again.
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2001-10-31 Matthias Clasen <matthiasc@poet.de>
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* gdk-pixbuf/gdk-pixbuf.sgml: include initialization_versions.sgml,
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@ -10,8 +10,8 @@
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<!entity gdk-pixbuf-util SYSTEM "sgml/util.sgml">
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<!entity gdk-pixbuf-animation SYSTEM "sgml/animation.sgml">
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<!entity GdkPixbufLoader SYSTEM "sgml/gdk-pixbuf-loader.sgml">
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<!entity module_interface SYSTEM "sgml/module_interface.sgml">
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<!entity initialization_versions SYSTEM "sgml/initialization_versions.sgml">
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<!entity module-interface SYSTEM "sgml/module_interface.sgml">
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<!entity initialization-versions SYSTEM "sgml/initialization_versions.sgml">
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<!entity gdk-pixbuf-gdk-pixbuf-xlib-init SYSTEM "sgml/gdk-pixbuf-xlib-init.sgml">
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<!entity gdk-pixbuf-gdk-pixbuf-xlib-rendering SYSTEM "sgml/gdk-pixbuf-xlib-rendering.sgml">
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<!entity gdk-pixbuf-gdk-pixbuf-xlib-from-drawables SYSTEM "sgml/gdk-pixbuf-xlib-from-drawables.sgml">
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@ -87,7 +87,7 @@
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</para>
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</partintro>
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&initialization_versions;
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&initialization-versions;
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&gdk-pixbuf-gdk-pixbuf;
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&gdk-pixbuf-refcounting;
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@ -100,7 +100,7 @@
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&gdk-pixbuf-animation;
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&GdkPixbufLoader;
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&module_interface;
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&module-interface;
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&gdk-pixbuf-gdk-pixbuf-xlib-init;
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&gdk-pixbuf-gdk-pixbuf-xlib-rendering;
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@ -62,11 +62,6 @@
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<para>
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The &gdk-pixbuf; library does not need to be initialized.
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However, if you intend to use the rendering functions or
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anything else from the <application>GdkRGB</application>
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library, you should call <function>gdk_rgb_init()</function>
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after calling <function>gtk_init()</function> or
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<function>gnome_init()</function> in your program.
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</para>
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<note>
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@ -101,14 +96,13 @@
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a new <link linkend="GdkPixbuf">GdkPixbuf</link> structure,
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it is created with an initial reference count of 1. When
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another part of the program wants to keep a reference to the
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pixbuf, it should call <link
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linkend="gdk-pixbuf-ref">gdk_pixbuf_ref()</link>; this will
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increase the reference count by 1. When some part of the
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program does not need to keep a reference to a pixbuf
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pixbuf, it should call <function>g_object_ref()</function>;
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this will increase the reference count by 1. When some part
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of the program does not need to keep a reference to a pixbuf
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anymore and wants to release the pixbuf, it should call
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<link linkend="gdk-pixbuf-unref">gdk_pixbuf_unref()</link>;
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this will decrease the reference count by 1. When the
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reference count drops to zero, the pixbuf gets destroyed or
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<function>g_object_unref()</function>; this will decrease
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the reference count by 1. When the reference count drops to
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zero, the pixbuf gets destroyed or
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<emphasis>finalized</emphasis> and its memory is freed.
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</para>
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@ -131,9 +125,9 @@
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<para>
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Most applications will simply need to call
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<function>gdk_pixbuf_ref()</function> when they want to keep
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<function>g_object_ref()</function> when they want to keep
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an extra reference to a pixbuf, and then
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<function>gdk_pixbuf_unref()</function> when they are done
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<function>g_object_unref()</function> when they are done
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with it.
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</para>
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</sect2>
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@ -232,7 +226,7 @@
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<para>
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After you have created a pixbuf, you can manipulate it in
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any way you please and then finally call
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<function>gdk_pixbuf_unref()</function> when you are done
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<function>g_object_unref()</function> when you are done
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with it. This can be thought of as a replacement for
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<function>gdk_imlib_destroy_image()</function> but with much
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cleaner semantics.
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@ -33,7 +33,7 @@ Creating a pixbuf from image data that is already in memory.
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<para>
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You can also copy an existing pixbuf with the gdk_pixbuf_copy()
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function. This is not the same as just doing a gdk_pixbuf_ref()
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function. This is not the same as just doing a g_object_ref()
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on the old pixbuf; the copy function will actually duplicate the
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pixel data in memory and create a new #GdkPixbuf structure for it.
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</para>
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@ -66,7 +66,7 @@ images in a certain file format.
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<para>
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A #GdkPixbufModule can be loaded dynamically from a #GModule.
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Each loadable module must contain a #ModuleFillVtableFunc function named
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<funcion>gdk_pixbuf__<replaceable>module_name</replaceable>_fill_vtable</function>.
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<function>gdk_pixbuf__<replaceable>module_name</replaceable>_fill_vtable</function>.
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It will get called when the module is loaded and must set the function
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pointers of the #GdkPixbufModule.
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</para>
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@ -8,15 +8,24 @@ Functions to perform reference counting and memory management on a
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<!-- ##### SECTION Long_Description ##### -->
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<para>
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#GdkPixbuf structures are reference counted. This means that
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an application can share a single pixbuf among many parts of the
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#GdkPixbuf structures are reference counted. This means that an
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application can share a single pixbuf among many parts of the
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code. When a piece of the program needs to keep a pointer to a
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pixbuf, it should add a reference to it. When it no longer needs
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the pixbuf, it should subtract a reference. The pixbuf will be
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destroyed when its reference count drops to zero. Newly-created
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#GdkPixbuf structures start with a reference count of one.
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pixbuf, it should add a reference to it by calling g_object_ref().
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When it no longer needs the pixbuf, it should subtract a reference
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by calling g_object_unref(). The pixbuf will be destroyed when
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its reference count drops to zero. Newly-created #GdkPixbuf
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structures start with a reference count of one.
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</para>
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<note>
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<para>
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As #GdkPixbuf is derived from #GObject now, gdk_pixbuf_ref() and
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gdk_pixbuf_unref() are deprecated in favour of g_object_ref()
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and g_object_unref () resp.
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</para>
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</note>
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<para>
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<emphasis>Finalizing</emphasis> a pixbuf means to free its pixel
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data and to free the #GdkPixbuf structure itself. Most of the
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@ -35,7 +44,7 @@ Functions to perform reference counting and memory management on a
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<para>
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As an extension to traditional reference counting, #GdkPixbuf
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structures support defining a handler for the last unref
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operation. If gdk_pixbuf_unref() is called on a #GdkPixbuf
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operation. If g_object_unref() is called on a #GdkPixbuf
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structure that has a reference count of 1, i.e. its last
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reference, then the pixbuf's last unref handler function will be
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called. It is up to this function to determine whether to
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@ -1,3 +1,7 @@
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2001-11-03 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
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* gdk-pixbuf-loader.c, gdk-pixbuf-scale.c: Documentation fixes.
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2001-10-29 Tor Lillqvist <tml@iki.fi>
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* Makefile.am: Use -no-undefined on Win32. Make
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@ -438,13 +438,13 @@ gdk_pixbuf_loader_new_with_type (const char *image_type,
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* @loader: A pixbuf loader.
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*
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* Queries the GdkPixbuf that a pixbuf loader is currently creating.
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* In general it only makes sense to call this function afer the
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* In general it only makes sense to call this function after the
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* "area_prepared" signal has been emitted by the loader; this means
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* that enough data has been read to know the size of the image that
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* will be allocated. If the loader has not received enough data via
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* gdk_pixbuf_loader_write(), then this function returns %NULL. The
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* returned pixbuf will be the same in all future calls to the loader,
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* so simply calling gdk_pixbuf_ref() should be sufficient to continue
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* so simply calling g_object_ref() should be sufficient to continue
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* using it. Additionally, if the loader is an animation, it will
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* return the "static image" of the animation
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* (see gdk_pixbuf_animation_get_static_image()).
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@ -41,10 +41,11 @@
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* @scale_y: the scale factor in the Y direction
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* @interp_type: the interpolation type for the transformation.
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*
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* Transforms the image by source image by scaling by @scale_x and @scale_y then
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* translating by @offset_x and @offset_y, then renders the rectangle
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* (@dest,@dest_y,@dest_width,@dest_height) of the resulting image onto the
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* destination drawable replacing the previous contents.
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* Transforms the source image @src by scaling by @scale_x and
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* @scale_y then translating by @offset_x and @offset_y, then renders
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* the rectangle (@dest_x, @dest_y, @dest_width, @dest_height) of the
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* resulting image onto the destination image replacing the
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* previous contents.
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**/
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void
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gdk_pixbuf_scale (const GdkPixbuf *src,
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@ -91,10 +92,10 @@ gdk_pixbuf_scale (const GdkPixbuf *src,
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* @interp_type: the interpolation type for the transformation.
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* @overall_alpha: overall alpha for source image (0..255)
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*
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* Transforms the image by source image by scaling by @scale_x and @scale_y then
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* translating by @offset_x and @offset_y, then composites the rectangle
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* (@dest,@dest_y,@dest_width,@dest_height) of the resulting image onto the
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* destination drawable.
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* Transforms the source image @src by scaling by @scale_x and
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* @scale_y then translating by @offset_x and @offset_y, then
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* composites the rectangle (@dest_x, @dest_y, @dest_width,
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* @dest_height) of the resulting image onto the destination image.
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**/
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void
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gdk_pixbuf_composite (const GdkPixbuf *src,
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@ -147,11 +148,11 @@ gdk_pixbuf_composite (const GdkPixbuf *src,
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* @color1: the color of check at upper left
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* @color2: the color of the other check
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*
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* Transforms the image by source image by scaling by @scale_x and @scale_y then
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* Transforms the source image @src by scaling by @scale_x and @scale_y then
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* translating by @offset_x and @offset_y, then composites the rectangle
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* (@dest,@dest_y,@dest_width,@dest_height) of the resulting image with
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* (@dest_x ,@dest_y, @dest_width, @dest_height) of the resulting image with
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* a checkboard of the colors @color1 and @color2 and renders it onto the
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* destination drawable.
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* destination image.
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**/
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void
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gdk_pixbuf_composite_color (const GdkPixbuf *src,
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@ -198,8 +199,8 @@ gdk_pixbuf_composite_color (const GdkPixbuf *src,
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* @dest_height: the height of destination image
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* @interp_type: the interpolation type for the transformation.
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*
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* Scale the #GdkPixbuf @src to @dest_width x @dest_height and render the result into
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* a new #GdkPixbuf.
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* Scale the #GdkPixbuf @src to @dest_width x @dest_height and render
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* the result into a new #GdkPixbuf.
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*
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* Return value: the new #GdkPixbuf, or NULL if not enough memory could be
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* allocated for it.
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@ -239,9 +240,9 @@ gdk_pixbuf_scale_simple (const GdkPixbuf *src,
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* @color1: the color of check at upper left
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* @color2: the color of the other check
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*
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* Scale the #GdkPixbuf @src to @dest_width x @dest_height composite the result with
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* a checkboard of colors @color1 and @color2 and render the result into
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* a new #GdkPixbuf.
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* Scale the #GdkPixbuf @src to @dest_width x @dest_height composite
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* the result with a checkboard of colors @color1 and @color2 and
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* render the result into a new #GdkPixbuf.
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*
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* Return value: the new #GdkPixbuf, or NULL if not enough memory could be
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* allocated for it.
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