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Updates for new functions

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Thu Sep 14 12:38:33 2000  Owen Taylor  <otaylor@redhat.com>

        * docs/reference/gdk/: Updates for new functions

	* docs/reference/gdk/tmpl/gtkclipboard.sgml
	docs/reference/gdk/tmpl/gtkselection.sgml: Updates
	and new information.
This commit is contained in:
Owen Taylor
2000-09-14 16:39:16 +00:00
committed by Owen Taylor
parent 03db6a411b
commit 42e44b9fa5
6 changed files with 434 additions and 41 deletions
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86
docs/reference/gdk/gdk-decl.txt
View File

@ -265,6 +265,11 @@ GdkNativeWindow anid
<RETURNS>gpointer </RETURNS>
XID xid
</FUNCTION>
<FUNCTION>
<NAME>gdk_x11_get_server_time</NAME>
<RETURNS>guint32 </RETURNS>
GdkWindow *window
</FUNCTION>
<MACRO>
<NAME>gdk_window_lookup</NAME>
#define gdk_window_lookup(xid) ((GdkWindow*) gdk_xid_table_lookup (xid))
@ -2606,39 +2611,6 @@ void
<RETURNS>void </RETURNS>
PangoContext *context,GdkColormap *colormap
</FUNCTION>
<ENUM>
<NAME>GdkPixbufAlphaMode</NAME>
typedef enum
{
GDK_PIXBUF_ALPHA_BILEVEL,
GDK_PIXBUF_ALPHA_FULL
} GdkPixbufAlphaMode;
</ENUM>
<FUNCTION>
<NAME>gdk_pixbuf_render_threshold_alpha</NAME>
<RETURNS>void </RETURNS>
GdkPixbuf *pixbuf,GdkBitmap *bitmap,int src_x,int src_y,int dest_x,int dest_y,int width,int height,int alpha_threshold
</FUNCTION>
<FUNCTION>
<NAME>gdk_pixbuf_render_to_drawable</NAME>
<RETURNS>void </RETURNS>
GdkPixbuf *pixbuf,GdkDrawable *drawable,GdkGC *gc,int src_x,int src_y,int dest_x,int dest_y,int width,int height,GdkRgbDither dither,int x_dither,int y_dither
</FUNCTION>
<FUNCTION>
<NAME>gdk_pixbuf_render_to_drawable_alpha</NAME>
<RETURNS>void </RETURNS>
GdkPixbuf *pixbuf,GdkDrawable *drawable,int src_x,int src_y,int dest_x,int dest_y,int width,int height,GdkPixbufAlphaMode alpha_mode,int alpha_threshold,GdkRgbDither dither,int x_dither,int y_dither
</FUNCTION>
<FUNCTION>
<NAME>gdk_pixbuf_render_pixmap_and_mask</NAME>
<RETURNS>void </RETURNS>
GdkPixbuf *pixbuf,GdkPixmap **pixmap_return,GdkBitmap **mask_return,int alpha_threshold
</FUNCTION>
<FUNCTION>
<NAME>gdk_pixbuf_get_from_drawable</NAME>
<RETURNS>GdkPixbuf *</RETURNS>
GdkPixbuf *dest,GdkDrawable *src,GdkColormap *cmap,int src_x,int src_y,int dest_x,int dest_y,int width,int height
</FUNCTION>
<STRUCT>
<NAME>GdkPixmapObject</NAME>
</STRUCT>
@ -2764,6 +2736,21 @@ GdkWindow *window,GdkAtom property
GdkAtom encoding,gint format,const guchar *text,gint length,gchar ***list
</FUNCTION>
<FUNCTION>
<NAME>gdk_text_property_to_utf8_list</NAME>
<RETURNS>gint </RETURNS>
GdkAtom encoding,gint format,const guchar *text,gint length,gchar ***list
</FUNCTION>
<FUNCTION>
<NAME>gdk_utf8_to_string_target</NAME>
<RETURNS>gchar *</RETURNS>
const gchar *str
</FUNCTION>
<FUNCTION>
<NAME>gdk_utf8_to_compound_text</NAME>
<RETURNS>gboolean </RETURNS>
const gchar *str,GdkAtom *encoding,gint *format,guchar **ctext,gint *length
</FUNCTION>
<FUNCTION>
<NAME>gdk_free_text_list</NAME>
<RETURNS>void </RETURNS>
gchar **list
@ -3859,3 +3846,36 @@ GdkWindow *window,gboolean update_children
<NAME>GDK_HAVE_WCTYPE_H</NAME>
#define GDK_HAVE_WCTYPE_H 1
</MACRO>
<ENUM>
<NAME>GdkPixbufAlphaMode</NAME>
typedef enum
{
GDK_PIXBUF_ALPHA_BILEVEL,
GDK_PIXBUF_ALPHA_FULL
} GdkPixbufAlphaMode;
</ENUM>
<FUNCTION>
<NAME>gdk_pixbuf_render_threshold_alpha</NAME>
<RETURNS>void </RETURNS>
GdkPixbuf *pixbuf,GdkBitmap *bitmap,int src_x,int src_y,int dest_x,int dest_y,int width,int height,int alpha_threshold
</FUNCTION>
<FUNCTION>
<NAME>gdk_pixbuf_render_to_drawable</NAME>
<RETURNS>void </RETURNS>
GdkPixbuf *pixbuf,GdkDrawable *drawable,GdkGC *gc,int src_x,int src_y,int dest_x,int dest_y,int width,int height,GdkRgbDither dither,int x_dither,int y_dither
</FUNCTION>
<FUNCTION>
<NAME>gdk_pixbuf_render_to_drawable_alpha</NAME>
<RETURNS>void </RETURNS>
GdkPixbuf *pixbuf,GdkDrawable *drawable,int src_x,int src_y,int dest_x,int dest_y,int width,int height,GdkPixbufAlphaMode alpha_mode,int alpha_threshold,GdkRgbDither dither,int x_dither,int y_dither
</FUNCTION>
<FUNCTION>
<NAME>gdk_pixbuf_render_pixmap_and_mask</NAME>
<RETURNS>void </RETURNS>
GdkPixbuf *pixbuf,GdkPixmap **pixmap_return,GdkBitmap **mask_return,int alpha_threshold
</FUNCTION>
<FUNCTION>
<NAME>gdk_pixbuf_get_from_drawable</NAME>
<RETURNS>GdkPixbuf *</RETURNS>
GdkPixbuf *dest,GdkDrawable *src,GdkColormap *cmap,int src_x,int src_y,int dest_x,int dest_y,int width,int height
</FUNCTION>

4
docs/reference/gdk/gdk-sections.txt
View File

@ -504,8 +504,11 @@ GdkAtom
GDK_NONE
gdk_text_property_to_text_list
gdk_free_text_list
gdk_text_property_to_utf8_list
gdk_string_to_compound_text
gdk_free_compound_text
gdk_utf8_to_string_target
gdk_utf8_to_compound_text
gdk_atom_intern
gdk_atom_name
gdk_property_get
@ -840,6 +843,7 @@ gdk_xid_table_lookup
gdk_window_lookup
gdk_pixmap_lookup
gdk_font_lookup
gdk_x11_get_server_time
<SUBSECTION Private>
GDK_TYPE_GC_X11

35
docs/reference/gdk/tmpl/properties.sgml
View File

@ -88,6 +88,19 @@ gdk_text_property_to_text_list().
a call to gdk_text_property_to_text_list().
<!-- ##### FUNCTION gdk_text_property_to_utf8_list ##### -->
<para>
</para>
@encoding:
@format:
@text:
@length:
@list:
@Returns:
<!-- ##### FUNCTION gdk_string_to_compound_text ##### -->
<para>
Convert a string from the encoding of the current locale
@ -110,6 +123,28 @@ Free the data returned from gdk_string_to_compound_text().
@ctext: The pointer stored in @ctext from a call to gdk_string_to_compound_text().
<!-- ##### FUNCTION gdk_utf8_to_string_target ##### -->
<para>
</para>
@str:
@Returns:
<!-- ##### FUNCTION gdk_utf8_to_compound_text ##### -->
<para>
</para>
@str:
@encoding:
@format:
@ctext:
@length:
@Returns:
<!-- ##### FUNCTION gdk_atom_intern ##### -->
<para>
Find or create an atom corresponding to a given string.

9
docs/reference/gdk/tmpl/x_interaction.sgml
View File

@ -295,3 +295,12 @@ X Window System Interaction
@xid:
<!-- ##### FUNCTION gdk_x11_get_server_time ##### -->
<para>
</para>
@window:
@Returns:

260
docs/reference/gtk/tmpl/gtkclipboard.sgml Normal file
View File

@ -0,0 +1,260 @@
<!-- ##### SECTION Title ##### -->
Clipboards
<!-- ##### SECTION Short_Description ##### -->
Storing data on Clipboards.
<!-- ##### SECTION Long_Description ##### -->
<para>
The #GtkClipboard object represents a clipboard of data shared
between different processes or between different widgets in
the same process. Each clipboard is identified by a name encoded as a
#GdkAtom. (Conversion to and from strings can be done with
gdk_atom_intern() and gdk_atom_name().) The default clipboard
corresponds to the CLIPBOARD atom; another commonly used clipboard
is the PRIMARY clipboard, which, in X, traditionally contains
the currently selected text.
</para>
<para>
To support having a number of different formats on the clipboard
at the same time, the clipboard mechanism allows providing
callbacks instead of the actual data. When you set the contents
of the clipboard, you can either supply the data directly (via
functions like gtk_clipboard_set_text()), or you can supply a
callback to be called at a later time when the data is needed (via
gtk_clipboard_set_with_data() or gtk_clipboard_set_with_owner().)
Providing a callback also avoids having to make copies of the data
when it is not needed.
</para>
<para>
gtk_clipboard_set_with_data() and gtk_clipboard_set_with_owner()
are quite similar; the choice between the two depends mostly on
which is more convenient in a particular situation.
The former is most useful when you want to have a blob of data
with callbacks to convert it into the various data types that you
advertise. When the @clear_func you provided is called, you
simply free the data blob. The latter is more useful when the
contents of clipboard reflect the internal state of a @GObject
(As an example, for the PRIMARY clipboard, when an entry widget
provides the clipboard's contents the contents are simply the
text within the selected region.) If the contents change, the
entry widget can call gtk_clipboard_set_with_owner() to update
the timestamp for clipboard ownership, without having to worry
about @clear_func being called.
</para>
<para>
Requesting the data from the clipboard is essentially
asynchronous. If the contents of the clipboard are provided within
the same process, then a direct function call will be made to
retrieve the data, but if they are provided by another process,
then the data needs to be retrieved from the other process, which
may take some time. To avoid blocking the user interface, the call
to request the selection, gtk_clipboard_request_contents() takes a
callback that will be called when the contents are received (or
when the request fails.) If you don't want to deal with providing
a separate callback, you can also use gtk_clipboard_wait_for_contents().
What this does is run the Glib main loop recursively waiting for
the contents. This can simplify the code flow, but you still have
to be aware that other callbacks in your program can be called
while this recursive mainloop is running.
</para>
<para>
Along with the functions to get the clipboard contents as an
arbitrary data chunk, there are also functions to retrieve
it as text, gtk_clipboard_request_text() and
gtk_clipboard_wait_for_text(). These functions take care of
determining which formats are advertised by the clipboard
provider, asking for the clipboard in the best available format
and converting the results into the UTF-8 encoding. (The standard
form for representing strings in GTK+.)
</para>
<!-- ##### SECTION See_Also ##### -->
<para>
<variablelist>
<varlistentry>
<term>#GtkSelection</term>
<listitem><para>@GtkClipboard provides a high-level wrapper around the
lower level routines that deal with X selections. It is
also possibly to directly manipulate the X selections,
though it is seldom necessary to do so.</para></listitem>
</varlistentry>
</variablelist>
</para>
<!-- ##### STRUCT GtkClipboard ##### -->
<para>
</para>
<!-- ##### FUNCTION gtk_clipboard_get ##### -->
<para>
</para>
@selection:
@Returns:
<!-- ##### FUNCTION gtk_clipboard_set_with_data ##### -->
<para>
</para>
@clipboard:
@targets:
@n_targets:
@get_func:
@clear_func:
@user_data:
@Returns:
<!-- ##### FUNCTION gtk_clipboard_set_with_owner ##### -->
<para>
</para>
@clipboard:
@targets:
@n_targets:
@get_func:
@clear_func:
@owner:
@Returns:
<!-- ##### USER_FUNCTION GtkClipboardGetFunc ##### -->
<para>
A function that will be called to provide the contents of the selection.
If multiple types of data were advertised, the requested type can
be determined from the @info parameter or by checking the target field
of @selection_data. If the data could succesfully be converted into
then it should be stored into the @selection_data object by
calling gtk_selection_data_set() (or related functions such
as gtk_seletion_data_get().) If no data is set, the requestor
will be informed that the attempt to get the data failed.
</para>
@clipboard: the #GtkClipboard
@selection_data: a #GtkSelectionData argument in which the requested
data should be stored.
@info: the info field corresponding to the requested
target from the #GtkTargetEntry array passed to
gtk_clipboard_set_with_data() or gtk_clipboard_set_with_owner().
@user_data_or_owner: the @user_data argument passed to gtk_clipboard_set_with_data(), or
the @owner argument passed to gtk_clipboard_set_owner()
<!-- ##### USER_FUNCTION GtkClipboardClearFunc ##### -->
<para>
A function that will be called when the contents of the clipboard are changed
or cleared. Once this has called, the @user_data_or_owner argument
will not be used again.
</para>
@clipboard: the #GtkClipboard
@user_data_or_owner: the @user_data argument passed to gtk_clipboard_set_with_data(), or
the @owner argument passed to gtk_clipboard_set_owner()
<!-- ##### FUNCTION gtk_clipboard_get_owner ##### -->
<para>
</para>
@clipboard:
@Returns:
<!-- ##### FUNCTION gtk_clipboard_clear ##### -->
<para>
</para>
@clipboard:
<!-- ##### FUNCTION gtk_clipboard_set_text ##### -->
<para>
</para>
@clipboard:
@text:
@len:
<!-- ##### FUNCTION gtk_clipboard_request_contents ##### -->
<para>
</para>
@clipboard:
@target:
@callback:
@user_data:
<!-- ##### USER_FUNCTION GtkClipboardReceivedFunc ##### -->
<para>
A function to be called when the results of gtk_clipboard_request_text()
are received, or when the request fails.
</para>
@clipboard: the #GtkClipboard
@selection_data: a #GtkSelectionData containing the data was received.
If retrieving the data failed, then then length field
of @selection_data will be negative.
@data: the @user_data supplied to gtk_clipboard_request_contents().
<!-- ##### FUNCTION gtk_clipboard_request_text ##### -->
<para>
</para>
@clipboard:
@callback:
@user_data:
<!-- ##### USER_FUNCTION GtkClipboardTextReceivedFunc ##### -->
<para>
A function to be called when the results of gtk_clipboard_request_text()
are received, or when the request fails.
</para>
@clipboard: the #GtkClipboard
@text: the text received, as a UTF-8 encoded string, or %NULL
if retrieving the data failed.
@data: the @user_data supplied to gtk_clipboard_request_text().
<!-- ##### FUNCTION gtk_clipboard_wait_for_contents ##### -->
<para>
</para>
@clipboard:
@target:
@Returns:
<!-- ##### FUNCTION gtk_clipboard_wait_for_text ##### -->
<para>
</para>
@clipboard:
@Returns:
<!--
Local variables:
mode: sgml
sgml-parent-document: ("../gtk-docs.sgml" "book" "refsect2" "")
End:
-->

81
docs/reference/gtk/tmpl/gtkselection.sgml
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@ -7,12 +7,37 @@ Functions for handling inter-process communication via selections.
<!-- ##### SECTION Long_Description ##### -->
<para>
See the documentation for #GtkWidget for descriptions
of the "selection_get" and "selection_received" signals.
The selection mechanism provides the basis for different types
of IPC between processes. In particular, drag and drop and
#GtkClipboard work via selections. You will very seldom or
never need to use most of the functions in this section directly;
#GtkClipboard provides a nicer interface to the same functionality.
</para>
<para>
Some of the datatypes defined this section are used in
the #GtkClipboard and drag-and-drop API's as well. The
#GtkTargetEntry structure and #GtkTargetList objects represent
lists of data types that are supported when sending or
receiving data. The #GtkSelectionData object is used to
store a chunk of data along with the data type and other
associated information.
</para>
<!-- ##### SECTION See_Also ##### -->
<para>
<variablelist>
<varlistentry>
<term>#GtkWidget</term>
<listitem><para>Much of the operation of selections happens via
signals for #GtkWidget. In particular, if you are
using the functions in this section, you may need
to pay attention to ::selection_get,
::selection_received, and :selection_clear_event
signals.</para></listitem>
</varlistentry>
</variablelist>
</para>
@ -159,6 +184,15 @@ for a given widget and selection.
@ntargets: number of entries in @targets
<!-- ##### FUNCTION gtk_selection_clear_targets ##### -->
<para>
</para>
@widget:
@selection:
<!-- ##### FUNCTION gtk_selection_convert ##### -->
<para>
Request the contents of a selection. When received,
@ -175,6 +209,29 @@ a "selection_received" signal will be generated.
this widget).
<!-- ##### FUNCTION gtk_selection_remove_all ##### -->
<para>
Removes all handlers and unsets ownership of all
selections for a widget. Called when widget is being
destroyed. This function will not generally be
called by applications.
</para>
@widget: a #GtkWidget
<!-- ##### STRUCT GtkSelectionData ##### -->
<para>
</para>
@selection:
@target:
@type:
@format:
@data:
@length:
<!-- ##### FUNCTION gtk_selection_data_set ##### -->
<para>
Store new data into a GtkSelectionData object. Should
@ -189,15 +246,23 @@ Null terminates the stored data.
@length: length of the data
<!-- ##### FUNCTION gtk_selection_remove_all ##### -->
<!-- ##### FUNCTION gtk_selection_data_set_text ##### -->
<para>
Removes all handlers and unsets ownership of all
selections for a widget. Called when widget is being
destroyed. This function will not generally be
called by applications.
</para>
@widget: a #GtkWidget
@selection_data:
@str:
@Returns:
<!-- ##### FUNCTION gtk_selection_data_get_text ##### -->
<para>
</para>
@selection_data:
@Returns:
<!-- ##### FUNCTION gtk_selection_data_copy ##### -->