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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 | #include "vikcoordlayer_pixmap.h" | |
24 | ||
25 | static VikCoordLayer *coord_layer_copy ( VikCoordLayer *vcl, gpointer vp ); | |
26 | static gboolean coord_layer_set_param ( VikCoordLayer *vcl, guint16 id, VikLayerParamData data, VikViewport *vp ); | |
27 | static VikLayerParamData coord_layer_get_param ( VikCoordLayer *vcl, guint16 id ); | |
28 | static void coord_layer_update_gc ( VikCoordLayer *vcl, VikViewport *vp, const gchar *color ); | |
29 | static void coord_layer_post_read ( VikCoordLayer *vcl, VikViewport *vp ); | |
30 | ||
31 | VikLayerParamScale param_scales[] = { | |
32 | { 0.05, 60.0, 0.25, 10 }, | |
33 | { 1, 10, 1, 0 }, | |
34 | }; | |
35 | ||
36 | VikLayerParam coord_layer_params[] = { | |
37 | { "color", VIK_LAYER_PARAM_STRING, VIK_LAYER_GROUP_NONE, "Color:", VIK_LAYER_WIDGET_ENTRY }, | |
38 | { "min_inc", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, "Minutes Width:", VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 }, | |
39 | { "line_thickness", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, "Line Thickness:", VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 1 }, | |
40 | }; | |
41 | ||
42 | ||
43 | enum { PARAM_COLOR = 0, PARAM_MIN_INC, PARAM_LINE_THICKNESS, NUM_PARAMS }; | |
44 | ||
45 | VikLayerInterface vik_coord_layer_interface = { | |
46 | "Coord", | |
47 | &coordlayer_pixbuf, | |
48 | ||
49 | NULL, | |
50 | 0, | |
51 | ||
52 | coord_layer_params, | |
53 | NUM_PARAMS, | |
54 | NULL, | |
55 | 0, | |
56 | ||
57 | (VikLayerFuncCreate) vik_coord_layer_create, | |
58 | (VikLayerFuncRealize) NULL, | |
59 | (VikLayerFuncPostRead) coord_layer_post_read, | |
60 | (VikLayerFuncFree) vik_coord_layer_free, | |
61 | ||
62 | (VikLayerFuncProperties) NULL, | |
63 | (VikLayerFuncDraw) vik_coord_layer_draw, | |
64 | (VikLayerFuncChangeCoordMode) NULL, | |
65 | ||
66 | (VikLayerFuncAddMenuItems) NULL, | |
67 | (VikLayerFuncSublayerAddMenuItems) NULL, | |
68 | ||
69 | (VikLayerFuncSublayerRenameRequest) NULL, | |
70 | (VikLayerFuncSublayerToggleVisible) NULL, | |
71 | ||
72 | (VikLayerFuncCopy) coord_layer_copy, | |
73 | ||
74 | (VikLayerFuncSetParam) coord_layer_set_param, | |
75 | (VikLayerFuncGetParam) coord_layer_get_param, | |
76 | ||
77 | (VikLayerFuncReadFileData) NULL, | |
78 | (VikLayerFuncWriteFileData) NULL, | |
79 | ||
80 | (VikLayerFuncCopyItem) NULL, | |
81 | (VikLayerFuncPasteItem) NULL, | |
82 | (VikLayerFuncFreeCopiedItem) NULL, | |
83 | }; | |
84 | ||
85 | struct _VikCoordLayer { | |
86 | VikLayer vl; | |
87 | GdkGC *gc; | |
88 | gdouble deg_inc; | |
89 | guint8 line_thickness; | |
90 | gchar *color; | |
91 | }; | |
92 | ||
93 | GType vik_coord_layer_get_type () | |
94 | { | |
95 | static GType vcl_type = 0; | |
96 | ||
97 | if (!vcl_type) | |
98 | { | |
99 | static const GTypeInfo vcl_info = | |
100 | { | |
101 | sizeof (VikCoordLayerClass), | |
102 | NULL, /* base_init */ | |
103 | NULL, /* base_finalize */ | |
104 | NULL, /* class init */ | |
105 | NULL, /* class_finalize */ | |
106 | NULL, /* class_data */ | |
107 | sizeof (VikCoordLayer), | |
108 | 0, | |
109 | NULL /* instance init */ | |
110 | }; | |
111 | vcl_type = g_type_register_static ( VIK_LAYER_TYPE, "VikCoordLayer", &vcl_info, 0 ); | |
112 | } | |
113 | ||
114 | return vcl_type; | |
115 | } | |
116 | ||
117 | static VikCoordLayer *coord_layer_copy ( VikCoordLayer *vcl, gpointer vp ) | |
118 | { | |
119 | VikCoordLayer *rv = vik_coord_layer_new ( ); | |
120 | ||
121 | rv->color = g_strdup ( vcl->color ); | |
122 | rv->deg_inc = vcl->deg_inc; | |
123 | rv->line_thickness = vcl->line_thickness; | |
124 | rv->gc = vcl->gc; | |
125 | g_object_ref ( rv->gc ); | |
126 | return rv; | |
127 | } | |
128 | ||
129 | gboolean coord_layer_set_param ( VikCoordLayer *vcl, guint16 id, VikLayerParamData data, VikViewport *vp ) | |
130 | { | |
131 | switch ( id ) | |
132 | { | |
133 | case PARAM_COLOR: if ( vcl->color ) g_free ( vcl->color ); vcl->color = g_strdup ( data.s ); break; | |
134 | case PARAM_MIN_INC: vcl->deg_inc = data.d / 60.0; break; | |
135 | case PARAM_LINE_THICKNESS: if ( data.u >= 1 && data.u <= 15 ) vcl->line_thickness = data.u; break; | |
136 | } | |
137 | return TRUE; | |
138 | } | |
139 | ||
140 | static VikLayerParamData coord_layer_get_param ( VikCoordLayer *vcl, guint16 id ) | |
141 | { | |
142 | VikLayerParamData rv; | |
143 | switch ( id ) | |
144 | { | |
145 | case PARAM_COLOR: rv.s = vcl->color ? vcl->color : ""; break; | |
146 | case PARAM_MIN_INC: rv.d = vcl->deg_inc * 60.0; break; | |
147 | case PARAM_LINE_THICKNESS: rv.i = vcl->line_thickness; break; | |
148 | } | |
149 | return rv; | |
150 | } | |
151 | ||
152 | static void coord_layer_post_read ( VikCoordLayer *vcl, VikViewport *vp ) | |
153 | { | |
154 | if ( vcl->gc ) | |
155 | g_object_unref ( G_OBJECT(vcl->gc) ); | |
156 | ||
157 | vcl->gc = vik_viewport_new_gc ( vp, vcl->color, vcl->line_thickness ); | |
158 | } | |
159 | ||
160 | VikCoordLayer *vik_coord_layer_new ( ) | |
161 | { | |
162 | VikCoordLayer *vcl = VIK_COORD_LAYER ( g_object_new ( VIK_COORD_LAYER_TYPE, NULL ) ); | |
163 | vik_layer_init ( VIK_LAYER(vcl), VIK_LAYER_COORD ); | |
164 | ||
165 | vcl->gc = NULL; | |
166 | vcl->deg_inc = 1.0/60.0; | |
167 | vcl->line_thickness = 3; | |
168 | vcl->color = NULL; | |
169 | return vcl; | |
170 | } | |
171 | ||
172 | void vik_coord_layer_draw ( VikCoordLayer *vcl, gpointer data ) | |
173 | { | |
174 | VikViewport *vp = (VikViewport *) data; | |
175 | if ( vik_viewport_get_coord_mode(vp) != VIK_COORD_UTM ) | |
176 | return; | |
177 | if ( vcl->gc != NULL) | |
178 | { | |
179 | const struct UTM *center = (const struct UTM *)vik_viewport_get_center ( vp ); | |
180 | gdouble xmpp = vik_viewport_get_xmpp ( vp ), ympp = vik_viewport_get_ympp ( vp ); | |
181 | guint16 width = vik_viewport_get_width ( vp ), height = vik_viewport_get_height ( vp ); | |
182 | struct LatLon ll, ll2, min, max; | |
183 | double lon; | |
184 | int x1, x2; | |
185 | struct UTM utm; | |
186 | ||
187 | utm = *center; | |
188 | utm.northing = center->northing - ( ympp * height / 2 ); | |
189 | ||
190 | a_coords_utm_to_latlon ( &utm, &ll ); | |
191 | ||
192 | utm.northing = center->northing + ( ympp * height / 2 ); | |
193 | ||
194 | a_coords_utm_to_latlon ( &utm, &ll2 ); | |
195 | ||
196 | { | |
197 | /* find corner coords in lat/lon. | |
198 | start at whichever is less: top or bottom left lon. goto whichever more: top or bottom right lon | |
199 | */ | |
200 | struct LatLon topleft, topright, bottomleft, bottomright; | |
201 | struct UTM temp_utm; | |
202 | temp_utm = *center; | |
203 | temp_utm.easting -= (width/2)*xmpp; | |
204 | temp_utm.northing += (height/2)*ympp; | |
205 | a_coords_utm_to_latlon ( &temp_utm, &topleft ); | |
206 | temp_utm.easting += (width*xmpp); | |
207 | a_coords_utm_to_latlon ( &temp_utm, &topright ); | |
208 | temp_utm.northing -= (height*ympp); | |
209 | a_coords_utm_to_latlon ( &temp_utm, &bottomright ); | |
210 | temp_utm.easting -= (width*xmpp); | |
211 | a_coords_utm_to_latlon ( &temp_utm, &bottomleft ); | |
212 | min.lon = (topleft.lon < bottomleft.lon) ? topleft.lon : bottomleft.lon; | |
213 | max.lon = (topright.lon > bottomright.lon) ? topright.lon : bottomright.lon; | |
214 | min.lat = (bottomleft.lat < bottomright.lat) ? bottomleft.lat : bottomright.lat; | |
215 | max.lat = (topleft.lat > topright.lat) ? topleft.lat : topright.lat; | |
216 | } | |
217 | ||
218 | lon = ((double) ((long) ((min.lon)/ vcl->deg_inc))) * vcl->deg_inc; | |
219 | ll.lon = ll2.lon = lon; | |
220 | ||
221 | for (; ll.lon <= max.lon; ll.lon+=vcl->deg_inc, ll2.lon+=vcl->deg_inc ) | |
222 | { | |
223 | a_coords_latlon_to_utm ( &ll, &utm ); | |
224 | x1 = ( (utm.easting - center->easting) / xmpp ) + (width / 2); | |
225 | a_coords_latlon_to_utm ( &ll2, &utm ); | |
226 | x2 = ( (utm.easting - center->easting) / xmpp ) + (width / 2); | |
227 | vik_viewport_draw_line (vp, vcl->gc, x1, height, x2, 0); | |
228 | } | |
229 | ||
230 | utm = *center; | |
231 | utm.easting = center->easting - ( xmpp * width / 2 ); | |
232 | ||
233 | a_coords_utm_to_latlon ( &utm, &ll ); | |
234 | ||
235 | utm.easting = center->easting + ( xmpp * width / 2 ); | |
236 | ||
237 | a_coords_utm_to_latlon ( &utm, &ll2 ); | |
238 | ||
239 | /* really lat, just reusing a variable */ | |
240 | lon = ((double) ((long) ((min.lat)/ vcl->deg_inc))) * vcl->deg_inc; | |
241 | ll.lat = ll2.lat = lon; | |
242 | ||
243 | for (; ll.lat <= max.lat ; ll.lat+=vcl->deg_inc, ll2.lat+=vcl->deg_inc ) | |
244 | { | |
245 | a_coords_latlon_to_utm ( &ll, &utm ); | |
246 | x1 = (height / 2) - ( (utm.northing - center->northing) / ympp ); | |
247 | a_coords_latlon_to_utm ( &ll2, &utm ); | |
248 | x2 = (height / 2) - ( (utm.northing - center->northing) / ympp ); | |
249 | vik_viewport_draw_line (vp, vcl->gc, width, x2, 0, x1); | |
250 | } | |
251 | } | |
252 | } | |
253 | ||
254 | void vik_coord_layer_free ( VikCoordLayer *vcl ) | |
255 | { | |
256 | if ( vcl->gc != NULL ) | |
257 | g_object_unref ( G_OBJECT(vcl->gc) ); | |
258 | ||
259 | if ( vcl->color != NULL ) | |
260 | g_free ( vcl->color ); | |
261 | } | |
262 | ||
263 | static void coord_layer_update_gc ( VikCoordLayer *vcl, VikViewport *vp, const gchar *color ) | |
264 | { | |
265 | if ( vcl->color ) | |
266 | g_free ( vcl->color ); | |
267 | ||
268 | vcl->color = g_strdup ( color ); | |
269 | ||
270 | if ( vcl->gc ) | |
271 | g_object_unref ( G_OBJECT(vcl->gc) ); | |
272 | ||
273 | vcl->gc = vik_viewport_new_gc ( vp, vcl->color, vcl->line_thickness ); | |
274 | } | |
275 | ||
276 | VikCoordLayer *vik_coord_layer_create ( VikViewport *vp ) | |
277 | { | |
278 | VikCoordLayer *vcl = vik_coord_layer_new (); | |
279 | coord_layer_update_gc ( vcl, vp, "red" ); | |
280 | return vcl; | |
281 | } | |
282 |