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gtk2/gdk/win32/gdkselection-win32.c

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/* 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 <string.h>
#include "gdkproperty.h"
#include "gdkselection.h"
#include "gdkinternals.h"
#include "gdkprivate.h"
#include "gdkprivate-win32.h"
#include "gdkwindow-win32.h"
/* We emulate the GDK_SELECTION window properties by storing
* it's data in a per-window hashtable.
*/
typedef struct {
guchar *data;
gint length;
gint format;
GdkAtom type;
} GdkSelProp;
static GHashTable *sel_prop_table = NULL;
void
gdk_win32_selection_init (void)
{
if (sel_prop_table == NULL)
sel_prop_table = g_hash_table_new (g_int_hash, g_int_equal);
}
void
gdk_sel_prop_store (GdkWindow *owner,
GdkAtom type,
gint format,
guchar *data,
gint length)
{
GdkSelProp *prop;
prop = g_hash_table_lookup (sel_prop_table, &GDK_WINDOW_HWND (owner));
if (prop != NULL)
{
g_free (prop->data);
g_hash_table_remove (sel_prop_table, &GDK_WINDOW_HWND (owner));
}
prop = g_new (GdkSelProp, 1);
prop->data = data;
prop->length = length;
prop->format = format;
prop->type = type;
g_hash_table_insert (sel_prop_table, &GDK_WINDOW_HWND (owner), prop);
}
gboolean
gdk_selection_owner_set (GdkWindow *owner,
GdkAtom selection,
guint32 time,
gboolean send_event)
{
gchar *sel_name;
HWND xwindow;
GDK_NOTE (MISC,
(sel_name = gdk_atom_name (selection),
g_print ("gdk_selection_owner_set: %#x %#x (%s)\n",
(owner ? (guint) GDK_WINDOW_HWND (owner) : 0),
(guint) selection, sel_name),
g_free (sel_name)));
if (selection != gdk_clipboard_atom)
return FALSE;
if (owner != NULL)
{
if (GDK_WINDOW_DESTROYED (owner))
return FALSE;
xwindow = GDK_WINDOW_HWND (owner);
}
else
xwindow = NULL;
GDK_NOTE (MISC, g_print ("...OpenClipboard(%#x)\n", (guint) xwindow));
if (!OpenClipboard (xwindow))
{
WIN32_API_FAILED ("OpenClipboard");
return FALSE;
}
GDK_NOTE (MISC, g_print ("...EmptyClipboard()\n"));
if (!EmptyClipboard ())
{
WIN32_API_FAILED ("EmptyClipboard");
CloseClipboard ();
return FALSE;
}
#if 0
/* No delayed rendering */
if (xwindow != NULL)
SetClipboardData (CF_TEXT, NULL);
#endif
GDK_NOTE (MISC, g_print ("...CloseClipboard()\n"));
if (!CloseClipboard ())
{
WIN32_API_FAILED ("CloseClipboard");
return FALSE;
}
if (owner != NULL)
{
/* Send ourselves an ersatz selection request message so that
* gdk_property_change will be called to store the clipboard data.
*/
SendMessage (xwindow, gdk_selection_request_msg,
selection, 0);
}
return TRUE;
}
GdkWindow*
gdk_selection_owner_get (GdkAtom selection)
{
GdkWindow *window;
gchar *sel_name;
#if 1
/* XXX Hmm, gtk selections seem to work best with this. This causes
* gtk to always get the clipboard contents from Windows, and not
* from the editable's own stashed-away copy.
*/
return NULL;
#else
if (selection != gdk_clipboard_atom)
window = NULL;
else
window = gdk_win32_handle_table_lookup (GetClipboardOwner ());
#endif
GDK_NOTE (MISC,
(sel_name = gdk_atom_name (selection),
g_print ("gdk_selection_owner_get: %#x (%s) = %#x\n",
(guint) selection, sel_name,
(window ? (guint) GDK_WINDOW_HWND (window) : 0)),
g_free (sel_name)));
return window;
}
void
gdk_selection_convert (GdkWindow *requestor,
GdkAtom selection,
GdkAtom target,
guint32 time)
{
HGLOBAL hdata;
guchar *ptr, *data, *datap, *p;
guint i, length, slength;
gchar *sel_name, *tgt_name;
g_return_if_fail (requestor != NULL);
if (GDK_WINDOW_DESTROYED (requestor))
return;
GDK_NOTE (MISC,
(sel_name = gdk_atom_name (selection),
tgt_name = gdk_atom_name (target),
g_print ("gdk_selection_convert: %#x %#x (%s) %#x (%s)\n",
(guint) GDK_WINDOW_HWND (requestor),
(guint) selection, sel_name,
(guint) target, tgt_name),
g_free (sel_name),
g_free (tgt_name)));
if (selection == gdk_clipboard_atom)
{
/* Converting the CLIPBOARD selection means he wants the
* contents of the clipboard. Get the clipboard data,
* and store it for later.
*/
GDK_NOTE (MISC, g_print ("...OpenClipboard(%#x)\n",
(guint) GDK_WINDOW_HWND (requestor)));
if (!OpenClipboard (GDK_WINDOW_HWND (requestor)))
{
WIN32_API_FAILED ("OpenClipboard");
return;
}
GDK_NOTE (MISC, g_print ("...GetClipboardData(CF_TEXT)\n"));
if ((hdata = GetClipboardData (CF_TEXT)) != NULL)
{
if ((ptr = GlobalLock (hdata)) != NULL)
{
length = GlobalSize (hdata);
GDK_NOTE (MISC, g_print ("...got data: %d bytes: %.10s\n",
length, ptr));
slength = 0;
p = ptr;
for (i = 0; i < length; i++)
{
if (*p == '\0')
break;
else if (*p != '\r')
slength++;
p++;
}
data = datap = g_malloc (slength + 1);
p = ptr;
for (i = 0; i < length; i++)
{
if (*p == '\0')
break;
else if (*p != '\r')
*datap++ = *p;
p++;
}
*datap++ = '\0';
gdk_sel_prop_store (requestor, GDK_TARGET_STRING, 8,
data, strlen (data) + 1);
GlobalUnlock (hdata);
}
}
GDK_NOTE (MISC, g_print ("...CloseClipboard()\n"));
CloseClipboard ();
/* Send ourselves an ersatz selection notify message so that we actually
* fetch the data.
*/
SendMessage (GDK_WINDOW_HWND (requestor), gdk_selection_notify_msg, selection, target);
}
else if (selection == gdk_win32_dropfiles_atom)
{
/* This means he wants the names of the dropped files.
* gdk_dropfiles_filter already has stored the text/uri-list
* data, tempoarily on gdk_root_parent's selection "property".
*/
GdkSelProp *prop;
prop = g_hash_table_lookup (sel_prop_table,
&GDK_WINDOW_HWND (gdk_parent_root));
if (prop != NULL)
{
g_hash_table_remove (sel_prop_table,
&GDK_WINDOW_HWND (gdk_parent_root));
gdk_sel_prop_store (requestor, prop->type, prop->format,
prop->data, prop->length);
g_free (prop);
SendMessage (GDK_WINDOW_HWND (requestor), gdk_selection_notify_msg, selection, target);
}
}
else
{
g_warning ("gdk_selection_convert: General case not implemented");
}
}
gint
gdk_selection_property_get (GdkWindow *requestor,
guchar **data,
GdkAtom *ret_type,
gint *ret_format)
{
GdkSelProp *prop;
g_return_val_if_fail (requestor != NULL, 0);
g_return_val_if_fail (GDK_IS_WINDOW (requestor), 0);
if (GDK_WINDOW_DESTROYED (requestor))
return 0;
GDK_NOTE (MISC, g_print ("gdk_selection_property_get: %#x\n",
(guint) GDK_WINDOW_HWND (requestor)));
prop = g_hash_table_lookup (sel_prop_table, &GDK_WINDOW_HWND (requestor));
if (prop == NULL)
{
*data = NULL;
return 0;
}
*data = g_malloc (prop->length);
if (prop->length > 0)
memmove (*data, prop->data, prop->length);
if (ret_type)
*ret_type = prop->type;
if (ret_format)
*ret_format = prop->format;
return prop->length;
}
void
gdk_selection_property_delete (GdkWindow *window)
{
GdkSelProp *prop;
prop = g_hash_table_lookup (sel_prop_table, &GDK_WINDOW_HWND (window));
if (prop != NULL)
{
g_free (prop->data);
g_hash_table_remove (sel_prop_table, &GDK_WINDOW_HWND (window));
}
else
g_warning ("huh?");
}
void
gdk_selection_send_notify (guint32 requestor,
GdkAtom selection,
GdkAtom target,
GdkAtom property,
guint32 time)
{
gchar *sel_name, *tgt_name, *prop_name;
GDK_NOTE (MISC,
(sel_name = gdk_atom_name (selection),
tgt_name = gdk_atom_name (target),
prop_name = gdk_atom_name (property),
g_print ("gdk_selection_send_notify: %#x %#x (%s) %#x (%s) %#x (%s)\n",
requestor,
(guint) selection, sel_name,
(guint) target, tgt_name,
(guint) property, prop_name),
g_free (sel_name),
g_free (tgt_name),
g_free (prop_name)));
/* Send ourselves a selection clear message so that gtk thinks we don't
* have the selection, and will claim it anew when needed, and
* we thus get a chance to store data in the Windows clipboard.
* Otherwise, if a gtkeditable does a copy to clipboard several times
* only the first one actually gets copied to the Windows clipboard,
* as only he first one causes a call to gdk_property_change.
*
* Hmm, there is something fishy with this. Cut and paste inside the
* same app didn't work, the gtkeditable immediately forgot the
* clipboard contents in gtk_editable_selection_clear as a result of
* this message. OTOH, when I changed gdk_selection_owner_get to
* always return NULL, it works. Sigh.
*/
SendMessage ((HWND) requestor, gdk_selection_clear_msg, selection, 0);
}
gint
gdk_text_property_to_text_list (GdkAtom encoding,
gint format,
const guchar *text,
gint length,
gchar ***list)
{
GDK_NOTE (MISC,
g_print ("gdk_text_property_to_text_list not implemented\n"));
return 0;
}
void
gdk_free_text_list (gchar **list)
{
g_return_if_fail (list != NULL);
/* ??? */
}
gint
gdk_string_to_compound_text (const gchar *str,
GdkAtom *encoding,
gint *format,
guchar **ctext,
gint *length)
{
g_warning ("gdk_string_to_compound_text: Not implemented");
return 0;
}
void
gdk_free_compound_text (guchar *ctext)
{
g_warning ("gdk_free_compound_text: Not implemented");
}
/* These are lifted from gdkselection-x11.c, just to get GTK+ to build.
* These functions probably don't make much sense at all in Windows.
*/
/* FIXME */
static gint
make_list (const gchar *text,
gint length,
gboolean latin1,
gchar ***list)
{
GSList *strings = NULL;
gint n_strings = 0;
gint i;
const gchar *p = text;
const gchar *q;
GSList *tmp_list;
GError *error = NULL;
while (p < text + length)
{
gchar *str;
q = p;
while (*q && q < text + length)
q++;
if (latin1)
{
str = g_convert (p, q - p,
"UTF-8", "ISO-8859-1",
NULL, NULL, &error);
if (!str)
{
g_warning ("Error converting selection from STRING: %s",
error->message);
g_error_free (error);
}
}
else
str = g_strndup (p, q - p);
if (str)
{
strings = g_slist_prepend (strings, str);
n_strings++;
}
p = q + 1;
}
if (list)
*list = g_new (gchar *, n_strings + 1);
(*list)[n_strings] = NULL;
i = n_strings;
tmp_list = strings;
while (tmp_list)
{
if (list)
(*list)[--i] = tmp_list->data;
else
g_free (tmp_list->data);
tmp_list = tmp_list->next;
}
g_slist_free (strings);
return n_strings;
}
/**
* 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: 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)
{
g_return_val_if_fail (text != NULL, 0);
g_return_val_if_fail (length >= 0, 0);
if (encoding == GDK_TARGET_STRING)
{
return make_list ((gchar *)text, length, TRUE, list);
}
else if (encoding == gdk_atom_intern ("UTF8_STRING", FALSE))
{
return make_list ((gchar *)text, length, FALSE, list);
}
else
{
gchar **local_list;
gint local_count;
gint i;
gchar *charset = NULL;
gboolean need_conversion= g_get_charset (&charset);
gint count = 0;
GError *error = NULL;
/* Probably COMPOUND text, we fall back to Xlib routines
*/
local_count = gdk_text_property_to_text_list (encoding,
format,
text,
length,
&local_list);
if (list)
*list = g_new (gchar *, local_count + 1);
for (i=0; i<local_count; i++)
{
/* list contains stuff in our default encoding
*/
if (need_conversion)
{
gchar *utf = g_convert (local_list[i], -1,
"UTF-8", charset,
NULL, NULL, &error);
if (utf)
{
if (list)
(*list)[count++] = utf;
else
g_free (utf);
}
else
{
g_warning ("Error converting to UTF-8 from '%s': %s",
charset, error->message);
g_error_free (error);
error = NULL;
}
}
else
{
if (list)
(*list)[count++] = g_strdup (local_list[i]);
}
}
gdk_free_text_list (local_list);
(*list)[count] = NULL;
return count;
}
}
/* The specifications for COMPOUND_TEXT and STRING specify that C0 and
* C1 are not allowed except for \n and \t, however the X conversions
* routines for COMPOUND_TEXT only enforce this in one direction,
* causing cut-and-paste of \r and \r\n separated text to fail.
* This routine strips out all non-allowed C0 and C1 characters
* from the input string and also canonicalizes \r, \r\n, and \n\r to \n
*/
static gchar *
sanitize_utf8 (const gchar *src)
{
gint len = strlen (src);
GString *result = g_string_sized_new (len);
const gchar *p = src;
while (*p)
{
if (*p == '\r' || *p == '\n')
{
p++;
if (*p == '\r' || *p == '\n')
p++;
g_string_append_c (result, '\n');
}
else
{
gunichar ch = g_utf8_get_char (p);
char buf[7];
gint buflen;
if (!((ch < 0x20 && ch != '\t') || (ch >= 0x7f && ch < 0xa0)))
{
buflen = g_unichar_to_utf8 (ch, buf);
g_string_append_len (result, buf, buflen);
}
p = g_utf8_next_char (p);
}
}
return g_string_free (result, FALSE);
}
/**
* gdk_utf8_to_string_target:
* @str: a UTF-8 string
*
* Convert an UTF-8 string into the best possible representation
* as a STRING. The representation of characters not in STRING
* is not specified; it may be as pseudo-escape sequences
* \x{ABCD}, or it may be in some other form of approximation.
*
* Return value: the newly allocated string, or %NULL if the
* conversion failed. (It should not fail for
* any properly formed UTF-8 string.)
**/
gchar *
gdk_utf8_to_string_target (const gchar *str)
{
GError *error = NULL;
gchar *tmp_str = sanitize_utf8 (str);
gchar *result = g_convert_with_fallback (tmp_str, -1,
"ISO-8859-1", "UTF-8",
NULL, NULL, NULL, &error);
if (!result)
{
g_warning ("Error converting from UTF-8 to STRING: %s",
error->message);
g_error_free (error);
}
g_free (tmp_str);
return result;
}
/**
* 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)
{
gboolean need_conversion;
gchar *charset;
gchar *locale_str, *tmp_str;
GError *error = NULL;
gboolean result;
g_return_val_if_fail (str != NULL, FALSE);
need_conversion = g_get_charset (&charset);
tmp_str = sanitize_utf8 (str);
if (need_conversion)
{
locale_str = g_convert_with_fallback (tmp_str, -1,
charset, "UTF-8",
NULL, NULL, NULL, &error);
g_free (tmp_str);
if (!locale_str)
{
g_warning ("Error converting from UTF-8 to '%s': %s",
charset, error->message);
g_error_free (error);
if (encoding)
*encoding = GDK_NONE;
if (format)
*format = GDK_NONE;
if (ctext)
*ctext = NULL;
if (length)
*length = 0;
return FALSE;
}
}
else
locale_str = tmp_str;
result = gdk_string_to_compound_text (locale_str,
encoding, format, ctext, length);
g_free (locale_str);
return result;
}
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