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, GTK_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) && (data->length >= 0))
  76         {
  77                 delete = (context->action == GDK_ACTION_MOVE);
  78
  79                 if (target_type == DND_TYPE_STRING)
  80                 {
  81                         gtk_entry_set_text (GTK_ENTRY (widget), (const gchar *) data->data);
  82                         success = TRUE;
  83                 }
  84         }
  85
  86         gtk_drag_finish (context, success, delete, time);
  87 }
  88
  89 static gboolean
  90 anjuta_drop_entry_drag_drop (GtkWidget *widget, GdkDragContext *context,
  91                              gint x, gint y, guint time)
  92 {
  93         GdkAtom target_type;
  94
  95         target_type = gtk_drag_dest_find_target (widget, context, NULL);
  96
  97         if (target_type != GDK_NONE)
  98                 gtk_drag_get_data (widget, context, target_type, time);
  99         else
 100                 gtk_drag_finish (context, FALSE, FALSE, time);
 101
 102         return TRUE;
 103 }
 104
 105 static void
 106 anjuta_drop_entry_size_request (GtkWidget *widget,
 107                                    GtkRequisition *requisition)
 108 {
 109         AnjutaDropEntry *self;
 110         AnjutaDropEntryClass *klass;
 111         GtkEntryClass *parent_class;
 112
 113         self = ANJUTA_DROP_ENTRY (widget);
 114         klass = ANJUTA_DROP_ENTRY_GET_CLASS (self);
 115         parent_class = g_type_class_peek_parent (klass);
 116
 117         GTK_WIDGET_CLASS (parent_class)->size_request (widget, requisition);
 118
 119         /* Make the entry box 40 pixels tall so that it is easier to drag into. */
 120         requisition->height = 40;
 121 }
 122
 123 static void
 124 anjuta_drop_entry_class_init (AnjutaDropEntryClass *klass)
 125 {
 126         GObjectClass* object_class = G_OBJECT_CLASS (klass);
 127         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
 128
 129         object_class->finalize = anjuta_drop_entry_finalize;
 130         widget_class->drag_data_received = anjuta_drop_entry_drag_data_received;
 131         widget_class->drag_drop = anjuta_drop_entry_drag_drop;
 132         widget_class->size_request = anjuta_drop_entry_size_request;
 133
 134 }
 135
 136 GtkWidget *
 137 anjuta_drop_entry_new (void)
 138 {
 139         return g_object_new (ANJUTA_TYPE_DROP_ENTRY, NULL);
 140 }