libanjuta/anjuta-drop-entry.c

   1 /* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
   2 /*
   3  * anjuta
   4  * Copyright (C) James Liggett 2010 <jrliggett@cox.net>
   5  *
   6  * anjuta is free software: you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * anjuta is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  14  * See the GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "anjuta-drop-entry.h"
  21
  22 /* DnD targets */
  23 enum
  24 {
  25         DND_TYPE_STRING
  26 };
  27
  28 static GtkTargetEntry dnd_target_entries[] =
  29 {
  30         {
  31                 "STRING",
  32                 0,
  33                 DND_TYPE_STRING
  34         },
  35         {
  36                 "text/plain",
  37                 0,
  38                 DND_TYPE_STRING
  39         }
  40 };
  41
  42 G_DEFINE_TYPE (AnjutaDropEntry, anjuta_drop_entry, ANJUTA_TYPE_ENTRY);
  43
  44 static void
  45 anjuta_drop_entry_init (AnjutaDropEntry *self)
  46 {
  47         gtk_drag_dest_set (GTK_WIDGET (self),
  48                            GTK_DEST_DEFAULT_MOTION | GTK_DEST_DEFAULT_HIGHLIGHT,
  49                            dnd_target_entries,
  50                            G_N_ELEMENTS (dnd_target_entries), GDK_ACTION_COPY);
  51 }
  52
  53 static void
  54 anjuta_drop_entry_finalize (GObject *object)
  55 {
  56         AnjutaDropEntry *self;
  57
  58         self = ANJUTA_DROP_ENTRY (object);
  59
  60         G_OBJECT_CLASS (anjuta_drop_entry_parent_class)->finalize (object);
  61 }
  62
  63 static void
  64 anjuta_drop_entry_drag_data_received (GtkWidget *widget,
  65                                       GdkDragContext *context, gint x, gint y,
  66                                       GtkSelectionData *data, guint target_type,
  67                                       guint time)
  68 {
  69         gboolean success;
  70         gboolean delete;
  71
  72         success = FALSE;
  73         delete = FALSE;
  74
  75         if ((data != NULL) &&
  76             (gtk_selection_data_get_length (data) >= 0))
  77         {
  78                 delete = (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE);
  79
  80                 if (target_type == DND_TYPE_STRING)
  81                 {
  82                         anjuta_entry_set_text (ANJUTA_ENTRY (widget),
  83                                                (const gchar *) gtk_selection_data_get_data (data));
  84                         success = TRUE;
  85                 }
  86         }
  87
  88         gtk_drag_finish (context, success, delete, time);
  89 }
  90
  91 static gboolean
  92 anjuta_drop_entry_drag_drop (GtkWidget *widget, GdkDragContext *context,
  93                              gint x, gint y, guint time)
  94 {
  95         GdkAtom target_type;
  96
  97         target_type = gtk_drag_dest_find_target (widget, context, NULL);
  98
  99         if (target_type != GDK_NONE)
 100                 gtk_drag_get_data (widget, context, target_type, time);
 101         else
 102                 gtk_drag_finish (context, FALSE, FALSE, time);
 103
 104         return TRUE;
 105 }
 106
 107 static void
 108 anjuta_drop_entry_get_preferred_height (GtkWidget *widget, gint *min_height,
 109                                         gint *nat_height)
 110 {
 111         GTK_WIDGET_CLASS (anjuta_drop_entry_parent_class)->get_preferred_height (widget,
 112                                                                                  min_height,
 113                                                                                  nat_height);
 114
 115         /* Make the entry a minimum of 40 pixels tall so that it is easier to drag
 116          * into. */
 117         if (*min_height < 40)
 118                 *min_height = 40;
 119
 120         if (*nat_height < 40)
 121                 *nat_height = 40;
 122 }
 123
 124 static void
 125 anjuta_drop_entry_class_init (AnjutaDropEntryClass *klass)
 126 {
 127         GObjectClass* object_class = G_OBJECT_CLASS (klass);
 128         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
 129
 130         object_class->finalize = anjuta_drop_entry_finalize;
 131         widget_class->drag_data_received = anjuta_drop_entry_drag_data_received;
 132         widget_class->drag_drop = anjuta_drop_entry_drag_drop;
 133         widget_class->get_preferred_height = anjuta_drop_entry_get_preferred_height;
 134
 135 }
 136
 137 GtkWidget *
 138 anjuta_drop_entry_new (void)
 139 {
 140         return g_object_new (ANJUTA_TYPE_DROP_ENTRY, NULL);
 141 }