[vte/wip/html: 10/425] Implement text/html target

[Christian Persch <chpe src gnome org>]

commit 68ea4d259f898112425616bdb3a597a941dd1d4b
Author: Joachim Breitner <mail joachim-breitner de>
Date:   Wed Jul 20 21:30:38 2011 +0200

    Implement text/html target
    
    For now without actually transferring any markup, but we do wrap the
    data in <pre>, so a possible user of the data will use fixed-width
    fonts.

 src/vte-private.h |    8 ++++++++
 src/vte.c         |   49 ++++++++++++++++++++++++++++++++++++-------------
 2 files changed, 44 insertions(+), 13 deletions(-)
---
diff --git a/src/vte-private.h b/src/vte-private.h
index 2ca635c..e380c2a 100644
--- a/src/vte-private.h
+++ b/src/vte-private.h
@@ -118,6 +118,14 @@ typedef enum {
        LAST_VTE_SELECTION
 } VteSelection;
 
+/* Used in the GtkClipboard API, to distinguish requests for HTML and TEXT
+ * contents of a clipboard */
+typedef enum {
+       VTE_TARGET_TEXT,
+       VTE_TARGET_HTML,
+       LAST_VTE_TARGET
+} VteSelectionTarget;
+
 /* A match regex, with a tag. */
 struct vte_match_regex {
        gint tag;
diff --git a/src/vte.c b/src/vte.c
index 75ca2b6..9641f04 100644
--- a/src/vte.c
+++ b/src/vte.c
@@ -6209,19 +6209,38 @@ vte_terminal_copy_cb(GtkClipboard *clipboard, GtkSelectionData *data,
        VteTerminal *terminal;
        terminal = owner;
        for (sel = 0; sel < LAST_VTE_SELECTION; sel ++) {
-               if (clipboard == terminal->pvt->clipboard[sel]) {
-                       if (terminal->pvt->selection_text[sel] != NULL) {
-                               _VTE_DEBUG_IF(VTE_DEBUG_SELECTION) {
-                                       int i;
-                                       g_printerr("Setting selection %d (%"G_GSIZE_FORMAT" UTF-8 bytes.)\n",
-                                               sel,
-                                               strlen(terminal->pvt->selection_text[sel]));
-                                       for (i = 0; terminal->pvt->selection_text[sel][i] != '\0'; i++) {
-                                               g_printerr("0x%04x\n",
-                                                       terminal->pvt->selection_text[sel][i]);
-                                       }
+               if (clipboard == terminal->pvt->clipboard[sel] && terminal->pvt->selection_text[sel] != NULL) 
{
+                       _VTE_DEBUG_IF(VTE_DEBUG_SELECTION) {
+                               int i;
+                               g_printerr("Setting selection %d (%"G_GSIZE_FORMAT" UTF-8 bytes.)\n",
+                                       sel,
+                                       strlen(terminal->pvt->selection_text[sel]));
+                               for (i = 0; terminal->pvt->selection_text[sel][i] != '\0'; i++) {
+                                       g_printerr("0x%04x\n",
+                                               terminal->pvt->selection_text[sel][i]);
                                }
-                               gtk_selection_data_set_text(data, terminal->pvt->selection_text[sel], -1);    
          }
+                       }
+                       if (info == VTE_TARGET_TEXT) {
+                               gtk_selection_data_set_text(data, terminal->pvt->selection_text[sel], -1);
+                       } else {
+                               gsize len;
+                               gchar *selection, *text;
+
+                               g_assert(info == VTE_TARGET_HTML);
+
+                               text = g_markup_printf_escaped("<pre>%s</pre>",
+                                       terminal->pvt->selection_text[sel]);
+                               /* Mozilla asks that we start our text/html with the Unicode byte order mark 
*/
+                               /* (Comment found in gtkimhtml.c of pidgin fame) */
+                               selection = g_convert(text, -1, "UTF-16", "UTF-8", NULL, &len, NULL);
+                               g_free(text);
+                               gtk_selection_data_set(data,
+                                       gdk_atom_intern("text/html", FALSE),
+                                       16,
+                                       (const guchar *)selection,
+                                       len);
+                               g_free(selection);
+                       }
                }
        } 
 }
@@ -6561,7 +6580,11 @@ vte_terminal_copy(VteTerminal *terminal, VteSelection sel)
                        GtkTargetList *list;
 
                        list = gtk_target_list_new (NULL, 0);
-                       gtk_target_list_add_text_targets (list, 0);
+                       gtk_target_list_add_text_targets (list, VTE_TARGET_TEXT);
+                       gtk_target_list_add (list,
+                               gdk_atom_intern("text/html", FALSE),
+                               0,
+                               VTE_TARGET_HTML);
                         targets = gtk_target_table_new_from_list (list, &n_targets);
                        gtk_target_list_unref (list);
                }