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1 | /* |
2 | * viking -- GPS Data and Topo Analyzer, Explorer, and Manager | |
3 | * | |
4 | * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #include "viking.h" | |
23 | ||
24 | /* static for a very good reason -- share between windows */ | |
25 | ||
26 | #define DATA_NONE 0 | |
27 | #define DATA_LAYER 1 | |
28 | #define DATA_SUBLAYER 2 | |
29 | ||
30 | guint8 type = DATA_NONE; | |
31 | gint subtype; | |
32 | guint16 layer_type; | |
33 | gpointer clipboard; | |
34 | ||
35 | void a_clipboard_copy ( VikLayersPanel *vlp ) | |
36 | { | |
37 | VikLayer *sel = vik_layers_panel_get_selected ( vlp ); | |
38 | GtkTreeIter iter; | |
39 | if ( ! sel ) | |
40 | return; | |
41 | ||
42 | vik_treeview_get_selected_iter ( sel->vt, &iter ); | |
43 | ||
44 | if ( clipboard ) | |
45 | a_clipboard_uninit(); | |
46 | ||
47 | if ( vik_treeview_item_get_type ( sel->vt, &iter ) == VIK_TREEVIEW_TYPE_SUBLAYER ) | |
48 | { | |
49 | layer_type = sel->type; | |
50 | if ( vik_layer_get_interface(layer_type)->copy_item && (clipboard = vik_layer_get_interface(layer_type)-> | |
51 | copy_item(sel,subtype=vik_treeview_item_get_data(sel->vt,&iter),vik_treeview_item_get_pointer(sel->vt,&iter)) )) | |
52 | type = DATA_SUBLAYER; | |
53 | } | |
54 | else | |
55 | { | |
56 | clipboard = sel; | |
57 | g_object_ref ( G_OBJECT(sel) ); | |
58 | type = DATA_LAYER; | |
59 | } | |
60 | } | |
61 | ||
62 | gboolean a_clipboard_paste ( VikLayersPanel *vlp ) | |
63 | { | |
64 | if ( clipboard && type == DATA_LAYER ) | |
65 | { | |
66 | /* oooh, _private_ ... so sue me, there's no other way to do this. */ | |
67 | if ( G_OBJECT(clipboard)->ref_count == 1 ) | |
68 | { /* optimization -- if layer has been deleted, don't copy the layer. */ | |
69 | g_object_ref ( G_OBJECT(clipboard) ); | |
70 | vik_layers_panel_add_layer ( vlp, VIK_LAYER(clipboard) ); | |
71 | return TRUE; | |
72 | } | |
73 | else | |
74 | { | |
75 | VikLayer *new_layer = vik_layer_copy ( VIK_LAYER(clipboard), vik_layers_panel_get_viewport(vlp) ); | |
76 | if ( new_layer ) | |
77 | { | |
78 | vik_layers_panel_add_layer ( vlp, new_layer ); | |
79 | return TRUE; | |
80 | } | |
81 | } | |
82 | } | |
83 | else if ( clipboard && type == DATA_SUBLAYER ) | |
84 | { | |
85 | VikLayer *sel = vik_layers_panel_get_selected ( vlp ); | |
86 | if ( sel && sel->type == layer_type) | |
87 | { | |
88 | if ( vik_layer_get_interface(layer_type)->paste_item ) | |
89 | return vik_layer_get_interface(layer_type)->paste_item ( sel, subtype, clipboard ); | |
90 | } | |
91 | else | |
92 | a_dialog_error_msg_extra ( VIK_GTK_WINDOW_FROM_WIDGET(GTK_WIDGET(vlp)), "The clipboard contains sublayer data for a %s layers. You must select a layer of this type to paste the clipboard data.", vik_layer_get_interface(layer_type)->name ); | |
93 | return FALSE; | |
94 | } | |
95 | return FALSE; | |
96 | } | |
97 | ||
98 | void a_clipboard_uninit () | |
99 | { | |
100 | if ( clipboard && type == DATA_LAYER ) | |
101 | g_object_unref ( G_OBJECT(clipboard) ); | |
102 | else if ( clipboard && type == DATA_SUBLAYER ) | |
103 | if ( vik_layer_get_interface(layer_type)->free_copied_item ) | |
104 | vik_layer_get_interface(layer_type)->free_copied_item(subtype,clipboard); | |
105 | clipboard = NULL; | |
106 | type = DATA_NONE; | |
107 | } |