mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-17 23:10:22 +00:00
249 lines
8.6 KiB
C
249 lines
8.6 KiB
C
/* GDK - The GIMP Drawing Kit
|
|
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
/*
|
|
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
|
|
* file for a list of people on the GTK+ Team. See the ChangeLog
|
|
* files for a list of changes. These files are distributed with
|
|
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include "gdkselection.h"
|
|
|
|
#include "gdkproperty.h"
|
|
#include "gdkdisplay.h"
|
|
|
|
|
|
/**
|
|
* SECTION:selections
|
|
* @Short_description: Functions for transfering data via the X selection mechanism
|
|
* @Title: Selections
|
|
*
|
|
* The X selection mechanism provides a way to transfer arbitrary chunks of
|
|
* data between programs. A <firstterm>selection</firstterm> is a essentially
|
|
* a named clipboard, identified by a string interned as a #GdkAtom. By
|
|
* claiming ownership of a selection, an application indicates that it will
|
|
* be responsible for supplying its contents. The most common selections are
|
|
* <literal>PRIMARY</literal> and <literal>CLIPBOARD</literal>.
|
|
*
|
|
* The contents of a selection can be represented in a number of formats,
|
|
* called <firstterm>targets</firstterm>. Each target is identified by an atom.
|
|
* A list of all possible targets supported by the selection owner can be
|
|
* retrieved by requesting the special target <literal>TARGETS</literal>. When
|
|
* a selection is retrieved, the data is accompanied by a type (an atom), and
|
|
* a format (an integer, representing the number of bits per item).
|
|
* See <link linkend="gdk-Properties-and-Atoms">Properties and Atoms</link>
|
|
* for more information.
|
|
*
|
|
* The functions in this section only contain the lowlevel parts of the
|
|
* selection protocol. A considerably more complicated implementation is needed
|
|
* on top of this. GTK+ contains such an implementation in the functions in
|
|
* <literal>gtkselection.h</literal> and programmers should use those functions
|
|
* instead of the ones presented here. If you plan to implement selection
|
|
* handling directly on top of the functions here, you should refer to the
|
|
* X Inter-client Communication Conventions Manual (ICCCM).
|
|
*/
|
|
|
|
/**
|
|
* gdk_selection_owner_set:
|
|
* @owner: a #GdkWindow or %NULL to indicate that the
|
|
* the owner for the given should be unset.
|
|
* @selection: an atom identifying a selection.
|
|
* @time_: timestamp to use when setting the selection.
|
|
* If this is older than the timestamp given last
|
|
* time the owner was set for the given selection, the
|
|
* request will be ignored.
|
|
* @send_event: if %TRUE, and the new owner is different
|
|
* from the current owner, the current owner
|
|
* will be sent a SelectionClear event.
|
|
*
|
|
* Sets the owner of the given selection.
|
|
*
|
|
* Returns: %TRUE if the selection owner was successfully
|
|
* changed to @owner, otherwise %FALSE.
|
|
*/
|
|
gboolean
|
|
gdk_selection_owner_set (GdkWindow *owner,
|
|
GdkAtom selection,
|
|
guint32 time,
|
|
gboolean send_event)
|
|
{
|
|
return gdk_selection_owner_set_for_display (gdk_display_get_default (),
|
|
owner, selection,
|
|
time, send_event);
|
|
}
|
|
|
|
/**
|
|
* gdk_selection_owner_get:
|
|
* @selection: an atom indentifying a selection.
|
|
*
|
|
* Determines the owner of the given selection.
|
|
*
|
|
* Returns: (transfer none): if there is a selection owner for
|
|
* this window, and it is a window known to the current
|
|
* process, the #GdkWindow that owns the selection, otherwise
|
|
* %NULL. Note that the return value may be owned
|
|
* by a different process if a foreign window
|
|
* was previously created for that window, but
|
|
* a new foreign window will never be created by
|
|
* this call.
|
|
*/
|
|
GdkWindow*
|
|
gdk_selection_owner_get (GdkAtom selection)
|
|
{
|
|
return gdk_selection_owner_get_for_display (gdk_display_get_default (),
|
|
selection);
|
|
}
|
|
|
|
/**
|
|
* gdk_selection_send_notify:
|
|
* @requestor: window to which to deliver response.
|
|
* @selection: selection that was requested.
|
|
* @target: target that was selected.
|
|
* @property: property in which the selection owner stored the
|
|
* data, or %GDK_NONE to indicate that the request
|
|
* was rejected.
|
|
* @time_: timestamp.
|
|
*
|
|
* Sends a response to SelectionRequest event.
|
|
*/
|
|
void
|
|
gdk_selection_send_notify (GdkNativeWindow requestor,
|
|
GdkAtom selection,
|
|
GdkAtom target,
|
|
GdkAtom property,
|
|
guint32 time)
|
|
{
|
|
gdk_selection_send_notify_for_display (gdk_display_get_default (),
|
|
requestor, selection,
|
|
target, property, time);
|
|
}
|
|
|
|
/**
|
|
* gdk_text_property_to_text_list:
|
|
* @encoding: an atom representing the encoding. The most common
|
|
* values for this are <literal>STRING</literal>,
|
|
* or <literal>COMPOUND_TEXT</literal>. This is
|
|
* value used as the type for the property.
|
|
* @format: the format of the property.
|
|
* @text: the text data.
|
|
* @length: the length of the property, in items.
|
|
* @list: location to store a terminated array of strings
|
|
* in the encoding of the current locale. This
|
|
* array should be freed using gdk_free_text_list().
|
|
*
|
|
* Converts a text string from the encoding as it is stored in
|
|
* a property into an array of strings in the encoding of
|
|
* the current local. (The elements of the array represent
|
|
* the nul-separated elements of the original text string.)
|
|
*
|
|
* Returns: the number of strings stored in @list, or 0,
|
|
* if the conversion failed.
|
|
*/
|
|
gint
|
|
gdk_text_property_to_text_list (GdkAtom encoding,
|
|
gint format,
|
|
const guchar *text,
|
|
gint length,
|
|
gchar ***list)
|
|
{
|
|
return gdk_text_property_to_text_list_for_display (gdk_display_get_default (),
|
|
encoding, format, text, length, list);
|
|
}
|
|
|
|
/**
|
|
* gdk_text_property_to_utf8_list:
|
|
* @encoding: an atom representing the encoding of the text
|
|
* @format: the format of the property
|
|
* @text: the text to convert
|
|
* @length: the length of @text, in bytes
|
|
* @list: (allow-none): location to store the list of strings or %NULL. The
|
|
* list should be freed with g_strfreev().
|
|
*
|
|
* Convert a text property in the giving encoding to
|
|
* a list of UTF-8 strings.
|
|
*
|
|
* Return value: the number of strings in the resulting
|
|
* list.
|
|
**/
|
|
gint
|
|
gdk_text_property_to_utf8_list (GdkAtom encoding,
|
|
gint format,
|
|
const guchar *text,
|
|
gint length,
|
|
gchar ***list)
|
|
{
|
|
return gdk_text_property_to_utf8_list_for_display (gdk_display_get_default (),
|
|
encoding, format, text, length, list);
|
|
}
|
|
|
|
/**
|
|
* gdk_string_to_compound_text:
|
|
* @str: a nul-terminated string.
|
|
* @encoding: location to store the encoding atom (to be used as
|
|
* the type for the property).
|
|
* @format: location to store the format for the property.
|
|
* @ctext: location to store newly allocated data for the property.
|
|
* @length: location to store the length of @ctext in items.
|
|
*
|
|
* Converts a string from the encoding of the current locale
|
|
* into a form suitable for storing in a window property.
|
|
*
|
|
* Returns: 0 upon sucess, non-zero upon failure.
|
|
*/
|
|
gint
|
|
gdk_string_to_compound_text (const gchar *str,
|
|
GdkAtom *encoding,
|
|
gint *format,
|
|
guchar **ctext,
|
|
gint *length)
|
|
{
|
|
return gdk_string_to_compound_text_for_display (gdk_display_get_default (),
|
|
str, encoding, format,
|
|
ctext, length);
|
|
}
|
|
|
|
/**
|
|
* gdk_utf8_to_compound_text:
|
|
* @str: a UTF-8 string
|
|
* @encoding: location to store resulting encoding
|
|
* @format: location to store format of the result
|
|
* @ctext: location to store the data of the result
|
|
* @length: location to store the length of the data
|
|
* stored in @ctext
|
|
*
|
|
* Convert from UTF-8 to compound text.
|
|
*
|
|
* Return value: %TRUE if the conversion succeeded, otherwise
|
|
* false.
|
|
**/
|
|
gboolean
|
|
gdk_utf8_to_compound_text (const gchar *str,
|
|
GdkAtom *encoding,
|
|
gint *format,
|
|
guchar **ctext,
|
|
gint *length)
|
|
{
|
|
return gdk_utf8_to_compound_text_for_display (gdk_display_get_default (),
|
|
str, encoding, format,
|
|
ctext, length);
|
|
}
|