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
24 #include "vikcoordlayer_pixmap.h"
26 static VikCoordLayer *coord_layer_copy ( VikCoordLayer *vcl, gpointer vp );
27 static void coord_layer_marshall( VikCoordLayer *vcl, guint8 **data, gint *len );
28 static VikCoordLayer *coord_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp );
29 static gboolean coord_layer_set_param ( VikCoordLayer *vcl, guint16 id, VikLayerParamData data, VikViewport *vp );
30 static VikLayerParamData coord_layer_get_param ( VikCoordLayer *vcl, guint16 id );
31 static void coord_layer_update_gc ( VikCoordLayer *vcl, VikViewport *vp, const gchar *color );
32 static void coord_layer_post_read ( VikCoordLayer *vcl, VikViewport *vp );
34 VikLayerParamScale param_scales[] = {
35 { 0.05, 60.0, 0.25, 10 },
39 VikLayerParam coord_layer_params[] = {
40 { "color", VIK_LAYER_PARAM_STRING, VIK_LAYER_GROUP_NONE, "Color:", VIK_LAYER_WIDGET_ENTRY },
41 { "min_inc", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, "Minutes Width:", VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 },
42 { "line_thickness", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, "Line Thickness:", VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 1 },
46 enum { PARAM_COLOR = 0, PARAM_MIN_INC, PARAM_LINE_THICKNESS, NUM_PARAMS };
48 VikLayerInterface vik_coord_layer_interface = {
62 (VikLayerFuncCreate) vik_coord_layer_create,
63 (VikLayerFuncRealize) NULL,
64 (VikLayerFuncPostRead) coord_layer_post_read,
65 (VikLayerFuncFree) vik_coord_layer_free,
67 (VikLayerFuncProperties) NULL,
68 (VikLayerFuncDraw) vik_coord_layer_draw,
69 (VikLayerFuncChangeCoordMode) NULL,
71 (VikLayerFuncAddMenuItems) NULL,
72 (VikLayerFuncSublayerAddMenuItems) NULL,
74 (VikLayerFuncSublayerRenameRequest) NULL,
75 (VikLayerFuncSublayerToggleVisible) NULL,
77 (VikLayerFuncCopy) coord_layer_copy,
78 (VikLayerFuncMarshall) coord_layer_marshall,
79 (VikLayerFuncUnmarshall) coord_layer_unmarshall,
81 (VikLayerFuncSetParam) coord_layer_set_param,
82 (VikLayerFuncGetParam) coord_layer_get_param,
84 (VikLayerFuncReadFileData) NULL,
85 (VikLayerFuncWriteFileData) NULL,
87 (VikLayerFuncDeleteItem) NULL,
88 (VikLayerFuncCopyItem) NULL,
89 (VikLayerFuncPasteItem) NULL,
90 (VikLayerFuncFreeCopiedItem) NULL,
91 (VikLayerFuncDragDropRequest) NULL,
94 struct _VikCoordLayer {
98 guint8 line_thickness;
102 GType vik_coord_layer_get_type ()
104 static GType vcl_type = 0;
108 static const GTypeInfo vcl_info =
110 sizeof (VikCoordLayerClass),
111 NULL, /* base_init */
112 NULL, /* base_finalize */
113 NULL, /* class init */
114 NULL, /* class_finalize */
115 NULL, /* class_data */
116 sizeof (VikCoordLayer),
118 NULL /* instance init */
120 vcl_type = g_type_register_static ( VIK_LAYER_TYPE, "VikCoordLayer", &vcl_info, 0 );
126 static VikCoordLayer *coord_layer_copy ( VikCoordLayer *vcl, gpointer vp )
128 VikCoordLayer *rv = vik_coord_layer_new ( );
130 rv->color = g_strdup ( vcl->color );
131 rv->deg_inc = vcl->deg_inc;
132 rv->line_thickness = vcl->line_thickness;
134 g_object_ref ( rv->gc );
138 static void coord_layer_marshall( VikCoordLayer *vcl, guint8 **data, gint *len )
140 vik_layer_marshall_params ( VIK_LAYER(vcl), data, len );
143 static VikCoordLayer *coord_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp )
145 VikCoordLayer *rv = vik_coord_layer_new ( vvp );
146 vik_layer_unmarshall_params ( VIK_LAYER(rv), data, len, vvp );
150 gboolean coord_layer_set_param ( VikCoordLayer *vcl, guint16 id, VikLayerParamData data, VikViewport *vp )
154 case PARAM_COLOR: if ( vcl->color ) g_free ( vcl->color ); vcl->color = g_strdup ( data.s ); break;
155 case PARAM_MIN_INC: vcl->deg_inc = data.d / 60.0; break;
156 case PARAM_LINE_THICKNESS: if ( data.u >= 1 && data.u <= 15 ) vcl->line_thickness = data.u; break;
161 static VikLayerParamData coord_layer_get_param ( VikCoordLayer *vcl, guint16 id )
163 VikLayerParamData rv;
166 case PARAM_COLOR: rv.s = vcl->color ? vcl->color : ""; break;
167 case PARAM_MIN_INC: rv.d = vcl->deg_inc * 60.0; break;
168 case PARAM_LINE_THICKNESS: rv.i = vcl->line_thickness; break;
173 static void coord_layer_post_read ( VikCoordLayer *vcl, VikViewport *vp )
176 g_object_unref ( G_OBJECT(vcl->gc) );
178 vcl->gc = vik_viewport_new_gc ( vp, vcl->color, vcl->line_thickness );
181 VikCoordLayer *vik_coord_layer_new ( )
183 VikCoordLayer *vcl = VIK_COORD_LAYER ( g_object_new ( VIK_COORD_LAYER_TYPE, NULL ) );
184 vik_layer_init ( VIK_LAYER(vcl), VIK_LAYER_COORD );
187 vcl->deg_inc = 1.0/60.0;
188 vcl->line_thickness = 3;
193 void vik_coord_layer_draw ( VikCoordLayer *vcl, gpointer data )
195 VikViewport *vp = (VikViewport *) data;
201 if ( vik_viewport_get_coord_mode(vp) != VIK_COORD_UTM )
203 VikCoord left, right, left2, right2;
205 gint x1, y1, x2, y2, smod = 1, mmod = 1;
206 gboolean mins = FALSE, secs = FALSE;
207 GdkGC *dgc = vik_viewport_new_gc(vp, vcl->color, vcl->line_thickness);
208 GdkGC *mgc = vik_viewport_new_gc(vp, vcl->color, MAX(vcl->line_thickness/2, 1));
209 GdkGC *sgc = vik_viewport_new_gc(vp, vcl->color, MAX(vcl->line_thickness/5, 1));
211 vik_viewport_screen_to_coord ( vp, 0, 0, &left );
212 vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), 0, &right );
213 vik_viewport_screen_to_coord ( vp, 0, vik_viewport_get_height(vp), &left2 );
214 vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), vik_viewport_get_height(vp), &right2 );
216 #define CLINE(gc, c1, c2) { \
217 vik_viewport_coord_to_screen(vp, (c1), &x1, &y1); \
218 vik_viewport_coord_to_screen(vp, (c2), &x2, &y2); \
219 vik_viewport_draw_line (vp, (gc), x1, y1, x2, y2); \
224 if (60*fabs(l-r) < 4) {
226 smod = MIN(6, (int)ceil(3600*fabs(l-r)/30.0));
230 mmod = MIN(6, (int)ceil(60*fabs(l-r)/30.0));
232 for (i=floor(l*60); i<ceil(r*60); i+=1.0) {
234 for (j=i*60+1; j<(i+1)*60; j+=1.0) {
235 left.east_west = j/3600.0;
236 left2.east_west = j/3600.0;
237 if ((int)j % smod == 0) CLINE(sgc, &left, &left2);
241 left.east_west = i/60.0;
242 left2.east_west = i/60.0;
243 if ((int)i % mmod == 0) CLINE(mgc, &left, &left2);
245 if ((int)i % 60 == 0) {
246 left.east_west = i/60.0;
247 left2.east_west = i/60.0;
248 CLINE(dgc, &left, &left2);
252 vik_viewport_screen_to_coord ( vp, 0, 0, &left );
253 l = left2.north_south;
254 r = left.north_south;
255 for (i=floor(l*60); i<ceil(r*60); i+=1.0) {
257 for (j=i*60+1; j<(i+1)*60; j+=1.0) {
258 left.north_south = j/3600.0;
259 right.north_south = j/3600.0;
260 if ((int)j % smod == 0) CLINE(sgc, &left, &right);
264 left.north_south = i/60.0;
265 right.north_south = i/60.0;
266 if ((int)i % mmod == 0) CLINE(mgc, &left, &right);
268 if ((int)i % 60 == 0) {
269 left.north_south = i/60.0;
270 right.north_south = i/60.0;
271 CLINE(dgc, &left, &right);
281 if ( vik_viewport_get_coord_mode(vp) == VIK_COORD_UTM )
283 const struct UTM *center = (const struct UTM *)vik_viewport_get_center ( vp );
284 gdouble xmpp = vik_viewport_get_xmpp ( vp ), ympp = vik_viewport_get_ympp ( vp );
285 guint16 width = vik_viewport_get_width ( vp ), height = vik_viewport_get_height ( vp );
286 struct LatLon ll, ll2, min, max;
292 utm.northing = center->northing - ( ympp * height / 2 );
294 a_coords_utm_to_latlon ( &utm, &ll );
296 utm.northing = center->northing + ( ympp * height / 2 );
298 a_coords_utm_to_latlon ( &utm, &ll2 );
301 /* find corner coords in lat/lon.
302 start at whichever is less: top or bottom left lon. goto whichever more: top or bottom right lon
304 struct LatLon topleft, topright, bottomleft, bottomright;
307 temp_utm.easting -= (width/2)*xmpp;
308 temp_utm.northing += (height/2)*ympp;
309 a_coords_utm_to_latlon ( &temp_utm, &topleft );
310 temp_utm.easting += (width*xmpp);
311 a_coords_utm_to_latlon ( &temp_utm, &topright );
312 temp_utm.northing -= (height*ympp);
313 a_coords_utm_to_latlon ( &temp_utm, &bottomright );
314 temp_utm.easting -= (width*xmpp);
315 a_coords_utm_to_latlon ( &temp_utm, &bottomleft );
316 min.lon = (topleft.lon < bottomleft.lon) ? topleft.lon : bottomleft.lon;
317 max.lon = (topright.lon > bottomright.lon) ? topright.lon : bottomright.lon;
318 min.lat = (bottomleft.lat < bottomright.lat) ? bottomleft.lat : bottomright.lat;
319 max.lat = (topleft.lat > topright.lat) ? topleft.lat : topright.lat;
322 lon = ((double) ((long) ((min.lon)/ vcl->deg_inc))) * vcl->deg_inc;
323 ll.lon = ll2.lon = lon;
325 for (; ll.lon <= max.lon; ll.lon+=vcl->deg_inc, ll2.lon+=vcl->deg_inc )
327 a_coords_latlon_to_utm ( &ll, &utm );
328 x1 = ( (utm.easting - center->easting) / xmpp ) + (width / 2);
329 a_coords_latlon_to_utm ( &ll2, &utm );
330 x2 = ( (utm.easting - center->easting) / xmpp ) + (width / 2);
331 vik_viewport_draw_line (vp, vcl->gc, x1, height, x2, 0);
335 utm.easting = center->easting - ( xmpp * width / 2 );
337 a_coords_utm_to_latlon ( &utm, &ll );
339 utm.easting = center->easting + ( xmpp * width / 2 );
341 a_coords_utm_to_latlon ( &utm, &ll2 );
343 /* really lat, just reusing a variable */
344 lon = ((double) ((long) ((min.lat)/ vcl->deg_inc))) * vcl->deg_inc;
345 ll.lat = ll2.lat = lon;
347 for (; ll.lat <= max.lat ; ll.lat+=vcl->deg_inc, ll2.lat+=vcl->deg_inc )
349 a_coords_latlon_to_utm ( &ll, &utm );
350 x1 = (height / 2) - ( (utm.northing - center->northing) / ympp );
351 a_coords_latlon_to_utm ( &ll2, &utm );
352 x2 = (height / 2) - ( (utm.northing - center->northing) / ympp );
353 vik_viewport_draw_line (vp, vcl->gc, width, x2, 0, x1);
358 void vik_coord_layer_free ( VikCoordLayer *vcl )
360 if ( vcl->gc != NULL )
361 g_object_unref ( G_OBJECT(vcl->gc) );
363 if ( vcl->color != NULL )
364 g_free ( vcl->color );
367 static void coord_layer_update_gc ( VikCoordLayer *vcl, VikViewport *vp, const gchar *color )
370 g_free ( vcl->color );
372 vcl->color = g_strdup ( color );
375 g_object_unref ( G_OBJECT(vcl->gc) );
377 vcl->gc = vik_viewport_new_gc ( vp, vcl->color, vcl->line_thickness );
380 VikCoordLayer *vik_coord_layer_create ( VikViewport *vp )
382 VikCoordLayer *vcl = vik_coord_layer_new ();
383 coord_layer_update_gc ( vcl, vp, "red" );