2 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
4 * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
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.
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.
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
21 #ifndef _VIKING_LAYER_H
22 #define _VIKING_LAYER_H
27 #include <gdk-pixbuf/gdk-pixdata.h>
29 #include "uibuilder.h"
30 #include "vikwindow.h"
31 #include "viktreeview.h"
32 #include "vikviewport.h"
34 #define VIK_LAYER_TYPE (vik_layer_get_type ())
35 #define VIK_LAYER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), VIK_LAYER_TYPE, VikLayer))
36 #define VIK_LAYER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), VIK_LAYER_TYPE, VikLayerClass))
37 #define IS_VIK_LAYER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), VIK_LAYER_TYPE))
38 #define IS_VIK_LAYER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), VIK_LAYER_TYPE))
40 typedef struct _VikLayer VikLayer;
41 typedef struct _VikLayerClass VikLayerClass;
45 GObjectClass object_class;
46 void (* update) (VikLayer *vl);
49 GType vik_layer_get_type ();
57 VikTreeview *vt; /* simply a reference */
60 /* for explicit "polymorphism" (function type switching) */
67 VIK_LAYER_AGGREGATE = 0,
77 /* I think most of these are ignored,
78 * returning GRAB_FOCUS grabs the focus for mouse move,
79 * mouse click, release always grabs focus. Focus allows key presses
81 * It used to be that, if ignored, Viking could look for other layers.
82 * this was useful for clicking a way/trackpoint in any layer,
83 * if no layer was selected (find way/trackpoint)
86 VIK_LAYER_TOOL_IGNORED=0,
88 VIK_LAYER_TOOL_ACK_REDRAW_ABOVE,
89 VIK_LAYER_TOOL_ACK_REDRAW_ALL,
90 VIK_LAYER_TOOL_ACK_REDRAW_IF_VISIBLE,
91 VIK_LAYER_TOOL_ACK_GRAB_FOCUS, /* only for move */
92 } VikLayerToolFuncStatus;
94 /* gpointer is tool-specific state created in the constructor */
95 typedef gpointer (*VikToolConstructorFunc) (VikWindow *, VikViewport *);
96 typedef void (*VikToolDestructorFunc) (gpointer);
97 typedef VikLayerToolFuncStatus (*VikToolMouseFunc) (VikLayer *, GdkEventButton *, gpointer);
98 typedef void (*VikToolActivationFunc) (VikLayer *, gpointer);
99 typedef gboolean (*VikToolKeyFunc) (VikLayer *, GdkEventKey *, gpointer);
101 typedef struct _VikToolInterface VikToolInterface;
102 struct _VikToolInterface {
104 VikToolConstructorFunc create;
105 VikToolDestructorFunc destroy;
106 VikToolActivationFunc activate;
107 VikToolActivationFunc deactivate;
108 VikToolMouseFunc click;
109 VikToolMouseFunc move;
110 VikToolMouseFunc release;
111 VikToolKeyFunc key_press; /* return FALSE if we don't use the key press -- should return AFLSE most of the time if we want any shortcuts / UI keybindings to work! use sparingly. */
112 const GdkPixdata *cursor;
115 /* Parameters (for I/O and Properties) */
116 /* --> moved to uibuilder.h */
119 /* layer interface functions */
121 /* Create a new layer of a certain type. Should be filled with defaults */
122 typedef VikLayer * (*VikLayerFuncCreate) (VikViewport *);
124 /* normally only needed for layers with sublayers. This is called when they
125 * are added to the treeview so they can add sublayers to the treeview. */
126 typedef void (*VikLayerFuncRealize) (VikLayer *,VikTreeview *,GtkTreeIter *);
128 /* rarely used, this is called after a read operation or properties box is run.
129 * usually used to create GC's that depend on params,
130 * but GC's can also be created from create() or set_param() */
131 typedef void (*VikLayerFuncPostRead) (VikLayer *,VikViewport *vp,gboolean from_file);
133 typedef void (*VikLayerFuncFree) (VikLayer *);
135 /* do _not_ use this unless absolutely neccesary. Use the dynamic properties (see coordlayer for example)
136 * returns TRUE if OK was pressed */
137 typedef gboolean (*VikLayerFuncProperties) (VikLayer *,VikViewport *);
139 typedef void (*VikLayerFuncDraw) (VikLayer *,VikViewport *);
140 typedef void (*VikLayerFuncChangeCoordMode) (VikLayer *,VikCoordMode);
142 typedef void (*VikLayerFuncSetMenuItemsSelection) (VikLayer *,guint16);
143 typedef guint16 (*VikLayerFuncGetMenuItemsSelection) (VikLayer *);
144 typedef void (*VikLayerFuncAddMenuItems) (VikLayer *,GtkMenu *,gpointer); /* gpointer is a VikLayersPanel */
145 typedef gboolean (*VikLayerFuncSublayerAddMenuItems) (VikLayer *,GtkMenu *,gpointer, /* first gpointer is a VikLayersPanel */
146 gint,gpointer,GtkTreeIter *);
147 typedef const gchar * (*VikLayerFuncSublayerRenameRequest) (VikLayer *,const gchar *,gpointer,
148 gint,VikViewport *,GtkTreeIter *); /* first gpointer is a VikLayersPanel */
149 typedef gboolean (*VikLayerFuncSublayerToggleVisible) (VikLayer *,gint,gpointer);
151 typedef void (*VikLayerFuncMarshall) (VikLayer *, guint8 **, gint *);
152 typedef VikLayer * (*VikLayerFuncUnmarshall) (guint8 *, gint, VikViewport *);
154 /* returns TRUE if needs to redraw due to changed param */
155 typedef gboolean (*VikLayerFuncSetParam) (VikLayer *, guint16, VikLayerParamData, VikViewport *);
157 typedef VikLayerParamData
158 (*VikLayerFuncGetParam) (VikLayer *, guint16);
160 typedef void (*VikLayerFuncReadFileData) (VikLayer *, FILE *);
161 typedef void (*VikLayerFuncWriteFileData) (VikLayer *, FILE *);
163 /* item manipulation */
164 typedef void (*VikLayerFuncDeleteItem) (VikLayer *, gint, gpointer);
165 /* layer, subtype, pointer to sub-item */
166 typedef void (*VikLayerFuncCopyItem) (VikLayer *, gint, gpointer, guint8 **, guint *);
167 /* layer, subtype, pointer to sub-item, return pointer, return len */
168 typedef gboolean (*VikLayerFuncPasteItem) (VikLayer *, gint, guint8 *, guint);
169 typedef void (*VikLayerFuncFreeCopiedItem) (gint, gpointer);
171 /* treeview drag and drop method. called on the destination layer. it is given a source and destination layer,
172 * and the source and destination iters in the treeview.
174 typedef void (*VikLayerFuncDragDropRequest) (VikLayer *, VikLayer *, GtkTreeIter *, GtkTreePath *);
177 VIK_MENU_ITEM_PROPERTY=1,
179 VIK_MENU_ITEM_COPY=4,
180 VIK_MENU_ITEM_PASTE=8,
181 VIK_MENU_ITEM_DELETE=16,
182 VIK_MENU_ITEM_ALL=0xff
183 } VikStdLayerMenuItem;
185 typedef struct _VikLayerInterface VikLayerInterface;
187 /* See vik_layer_* for function parameter names */
188 struct _VikLayerInterface {
190 const GdkPixdata * icon;
192 VikToolInterface * tools;
195 /* for I/O reading to and from .vik files -- params like coordline width, color, etc. */
196 VikLayerParam * params;
197 guint16 params_count;
198 gchar ** params_groups;
199 guint8 params_groups_count;
201 /* menu items to be created */
202 VikStdLayerMenuItem menu_items_selection;
204 VikLayerFuncCreate create;
205 VikLayerFuncRealize realize;
206 VikLayerFuncPostRead post_read;
207 VikLayerFuncFree free;
209 VikLayerFuncProperties properties;
210 VikLayerFuncDraw draw;
211 VikLayerFuncChangeCoordMode change_coord_mode;
213 VikLayerFuncSetMenuItemsSelection set_menu_selection;
214 VikLayerFuncGetMenuItemsSelection get_menu_selection;
216 VikLayerFuncAddMenuItems add_menu_items;
217 VikLayerFuncSublayerAddMenuItems sublayer_add_menu_items;
218 VikLayerFuncSublayerRenameRequest sublayer_rename_request;
219 VikLayerFuncSublayerToggleVisible sublayer_toggle_visible;
221 VikLayerFuncMarshall marshall;
222 VikLayerFuncUnmarshall unmarshall;
225 VikLayerFuncSetParam set_param;
226 VikLayerFuncGetParam get_param;
228 /* for I/O -- extra non-param data like TrwLayer data */
229 VikLayerFuncReadFileData read_file_data;
230 VikLayerFuncWriteFileData write_file_data;
232 VikLayerFuncDeleteItem delete_item;
233 VikLayerFuncCopyItem copy_item;
234 VikLayerFuncPasteItem paste_item;
235 VikLayerFuncFreeCopiedItem free_copied_item;
237 VikLayerFuncDragDropRequest drag_drop_request;
240 VikLayerInterface *vik_layer_get_interface ( gint type );
243 void vik_layer_init ( VikLayer *vl, gint type );
244 void vik_layer_draw ( VikLayer *l, gpointer data );
245 void vik_layer_change_coord_mode ( VikLayer *l, VikCoordMode mode );
246 void vik_layer_rename ( VikLayer *l, const gchar *new_name );
247 void vik_layer_rename_no_copy ( VikLayer *l, gchar *new_name );
248 const gchar *vik_layer_get_name ( VikLayer *l );
250 gboolean vik_layer_set_param (VikLayer *layer, guint16 id, VikLayerParamData data, gpointer vp);
252 void vik_layer_emit_update ( VikLayer *vl );
255 void vik_layer_set_menu_items_selection(VikLayer *l, guint16 selection);
256 guint16 vik_layer_get_menu_items_selection(VikLayer *l);
257 void vik_layer_add_menu_items ( VikLayer *l, GtkMenu *menu, gpointer vlp );
258 VikLayer *vik_layer_create ( gint type, gpointer vp, GtkWindow *w, gboolean interactive );
259 gboolean vik_layer_properties ( VikLayer *layer, gpointer vp );
261 void vik_layer_realize ( VikLayer *l, VikTreeview *vt, GtkTreeIter * layer_iter );
262 void vik_layer_post_read ( VikLayer *layer, VikViewport *vp, gboolean from_file );
264 gboolean vik_layer_sublayer_add_menu_items ( VikLayer *l, GtkMenu *menu, gpointer vlp, gint subtype, gpointer sublayer, GtkTreeIter *iter );
266 VikLayer *vik_layer_copy ( VikLayer *vl, gpointer vp );
267 void vik_layer_marshall ( VikLayer *vl, guint8 **data, gint *len );
268 VikLayer *vik_layer_unmarshall ( guint8 *data, gint len, VikViewport *vvp );
269 void vik_layer_marshall_params ( VikLayer *vl, guint8 **data, gint *len );
270 void vik_layer_unmarshall_params ( VikLayer *vl, guint8 *data, gint len, VikViewport *vvp );
272 const gchar *vik_layer_sublayer_rename_request ( VikLayer *l, const gchar *newname, gpointer vlp, gint subtype, gpointer sublayer, GtkTreeIter *iter );
274 gboolean vik_layer_sublayer_toggle_visible ( VikLayer *l, gint subtype, gpointer sublayer );
276 /* TODO: put in layerspanel */
277 GdkPixbuf *vik_layer_load_icon ( gint type );
279 VikLayer *vik_layer_get_and_reset_trigger();
280 void vik_layer_emit_update_secondary ( VikLayer *vl ); /* to be called by aggregate layer only. doesn't set the trigger */
281 void vik_layer_emit_update_although_invisible ( VikLayer *vl );
283 GdkCursor *vik_layer_get_tool_cursor ( gint layer_id, gint tool_id );
284 void vik_layer_cursors_init();
285 void vik_layer_cursors_uninit();