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
25 #include <glib/gi18n.h>
28 #include "icons/icons.h"
30 static void coord_layer_marshall( VikCoordLayer *vcl, guint8 **data, gint *len );
31 static VikCoordLayer *coord_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp );
32 static gboolean coord_layer_set_param ( VikCoordLayer *vcl, guint16 id, VikLayerParamData data, VikViewport *vp );
33 static VikLayerParamData coord_layer_get_param ( VikCoordLayer *vcl, guint16 id );
34 static void coord_layer_update_gc ( VikCoordLayer *vcl, VikViewport *vp, const gchar *color );
35 static void coord_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file );
37 static VikLayerParamScale param_scales[] = {
38 { 0.05, 60.0, 0.25, 10 },
42 static VikLayerParam coord_layer_params[] = {
43 { "color", VIK_LAYER_PARAM_COLOR, VIK_LAYER_GROUP_NONE, N_("Color:"), VIK_LAYER_WIDGET_COLOR, 0 },
44 { "min_inc", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, N_("Minutes Width:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 },
45 { "line_thickness", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Line Thickness:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 1 },
49 enum { PARAM_COLOR = 0, PARAM_MIN_INC, PARAM_LINE_THICKNESS, NUM_PARAMS };
51 VikLayerInterface vik_coord_layer_interface = {
53 &vikcoordlayer_pixbuf,
65 (VikLayerFuncCreate) vik_coord_layer_create,
66 (VikLayerFuncRealize) NULL,
67 coord_layer_post_read,
68 (VikLayerFuncFree) vik_coord_layer_free,
70 (VikLayerFuncProperties) NULL,
71 (VikLayerFuncDraw) vik_coord_layer_draw,
72 (VikLayerFuncChangeCoordMode) NULL,
74 (VikLayerFuncSetMenuItemsSelection) NULL,
75 (VikLayerFuncGetMenuItemsSelection) NULL,
77 (VikLayerFuncAddMenuItems) NULL,
78 (VikLayerFuncSublayerAddMenuItems) NULL,
80 (VikLayerFuncSublayerRenameRequest) NULL,
81 (VikLayerFuncSublayerToggleVisible) NULL,
83 (VikLayerFuncMarshall) coord_layer_marshall,
84 (VikLayerFuncUnmarshall) coord_layer_unmarshall,
86 (VikLayerFuncSetParam) coord_layer_set_param,
87 (VikLayerFuncGetParam) coord_layer_get_param,
89 (VikLayerFuncReadFileData) NULL,
90 (VikLayerFuncWriteFileData) NULL,
92 (VikLayerFuncDeleteItem) NULL,
93 (VikLayerFuncCopyItem) NULL,
94 (VikLayerFuncPasteItem) NULL,
95 (VikLayerFuncFreeCopiedItem) NULL,
96 (VikLayerFuncDragDropRequest) NULL,
99 struct _VikCoordLayer {
103 guint8 line_thickness;
107 GType vik_coord_layer_get_type ()
109 static GType vcl_type = 0;
113 static const GTypeInfo vcl_info =
115 sizeof (VikCoordLayerClass),
116 NULL, /* base_init */
117 NULL, /* base_finalize */
118 NULL, /* class init */
119 NULL, /* class_finalize */
120 NULL, /* class_data */
121 sizeof (VikCoordLayer),
123 NULL /* instance init */
125 vcl_type = g_type_register_static ( VIK_LAYER_TYPE, "VikCoordLayer", &vcl_info, 0 );
131 static void coord_layer_marshall( VikCoordLayer *vcl, guint8 **data, gint *len )
133 vik_layer_marshall_params ( VIK_LAYER(vcl), data, len );
136 static VikCoordLayer *coord_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp )
138 VikCoordLayer *rv = vik_coord_layer_new ( vvp );
139 vik_layer_unmarshall_params ( VIK_LAYER(rv), data, len, vvp );
143 gboolean coord_layer_set_param ( VikCoordLayer *vcl, guint16 id, VikLayerParamData data, VikViewport *vp )
147 case PARAM_COLOR: if ( vcl->color ) gdk_color_free ( vcl->color ); vcl->color = gdk_color_copy( &(data.c)); break;
148 case PARAM_MIN_INC: vcl->deg_inc = data.d / 60.0; break;
149 case PARAM_LINE_THICKNESS: if ( data.u >= 1 && data.u <= 15 ) vcl->line_thickness = data.u; break;
154 static VikLayerParamData coord_layer_get_param ( VikCoordLayer *vcl, guint16 id )
156 VikLayerParamData rv;
162 rv.c.pixel = vcl->color->pixel;
163 rv.c.red = vcl->color->red;
164 rv.c.green = vcl->color->green;
165 rv.c.blue = vcl->color->blue;
168 case PARAM_MIN_INC: rv.d = vcl->deg_inc * 60.0; break;
169 case PARAM_LINE_THICKNESS: rv.i = vcl->line_thickness; break;
174 static void coord_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file )
176 VikCoordLayer *vcl = VIK_COORD_LAYER(vl);
178 g_object_unref ( G_OBJECT(vcl->gc) );
180 vcl->gc = vik_viewport_new_gc_from_color ( vp, vcl->color, vcl->line_thickness );
184 VikCoordLayer *vik_coord_layer_new ( )
188 VikCoordLayer *vcl = VIK_COORD_LAYER ( g_object_new ( VIK_COORD_LAYER_TYPE, NULL ) );
189 vik_layer_init ( VIK_LAYER(vcl), VIK_LAYER_COORD );
192 InitColor.red = 65535;
193 InitColor.green = 65535;
194 InitColor.blue = 65535;
197 vcl->deg_inc = 1.0/60.0;
198 vcl->line_thickness = 3;
199 vcl->color = gdk_color_copy (&InitColor);
203 void vik_coord_layer_draw ( VikCoordLayer *vcl, gpointer data )
205 VikViewport *vp = (VikViewport *) data;
211 if ( vik_viewport_get_coord_mode(vp) != VIK_COORD_UTM )
213 VikCoord left, right, left2, right2;
215 gint x1, y1, x2, y2, smod = 1, mmod = 1;
216 gboolean mins = FALSE, secs = FALSE;
217 GdkGC *dgc = vik_viewport_new_gc_from_color(vp, vcl->color, vcl->line_thickness);
218 GdkGC *mgc = vik_viewport_new_gc_from_color(vp, vcl->color, MAX(vcl->line_thickness/2, 1));
219 GdkGC *sgc = vik_viewport_new_gc_from_color(vp, vcl->color, MAX(vcl->line_thickness/5, 1));
221 vik_viewport_screen_to_coord ( vp, 0, 0, &left );
222 vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), 0, &right );
223 vik_viewport_screen_to_coord ( vp, 0, vik_viewport_get_height(vp), &left2 );
224 vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), vik_viewport_get_height(vp), &right2 );
226 #define CLINE(gc, c1, c2) { \
227 vik_viewport_coord_to_screen(vp, (c1), &x1, &y1); \
228 vik_viewport_coord_to_screen(vp, (c2), &x2, &y2); \
229 vik_viewport_draw_line (vp, (gc), x1, y1, x2, y2); \
234 if (60*fabs(l-r) < 4) {
236 smod = MIN(6, (int)ceil(3600*fabs(l-r)/30.0));
240 mmod = MIN(6, (int)ceil(60*fabs(l-r)/30.0));
242 for (i=floor(l*60); i<ceil(r*60); i+=1.0) {
244 for (j=i*60+1; j<(i+1)*60; j+=1.0) {
245 left.east_west = j/3600.0;
246 left2.east_west = j/3600.0;
247 if ((int)j % smod == 0) CLINE(sgc, &left, &left2);
251 left.east_west = i/60.0;
252 left2.east_west = i/60.0;
253 if ((int)i % mmod == 0) CLINE(mgc, &left, &left2);
255 if ((int)i % 60 == 0) {
256 left.east_west = i/60.0;
257 left2.east_west = i/60.0;
258 CLINE(dgc, &left, &left2);
262 vik_viewport_screen_to_coord ( vp, 0, 0, &left );
263 l = left2.north_south;
264 r = left.north_south;
265 for (i=floor(l*60); i<ceil(r*60); i+=1.0) {
267 for (j=i*60+1; j<(i+1)*60; j+=1.0) {
268 left.north_south = j/3600.0;
269 right.north_south = j/3600.0;
270 if ((int)j % smod == 0) CLINE(sgc, &left, &right);
274 left.north_south = i/60.0;
275 right.north_south = i/60.0;
276 if ((int)i % mmod == 0) CLINE(mgc, &left, &right);
278 if ((int)i % 60 == 0) {
279 left.north_south = i/60.0;
280 right.north_south = i/60.0;
281 CLINE(dgc, &left, &right);
291 if ( vik_viewport_get_coord_mode(vp) == VIK_COORD_UTM )
293 const struct UTM *center = (const struct UTM *)vik_viewport_get_center ( vp );
294 gdouble xmpp = vik_viewport_get_xmpp ( vp ), ympp = vik_viewport_get_ympp ( vp );
295 guint16 width = vik_viewport_get_width ( vp ), height = vik_viewport_get_height ( vp );
296 struct LatLon ll, ll2, min, max;
302 utm.northing = center->northing - ( ympp * height / 2 );
304 a_coords_utm_to_latlon ( &utm, &ll );
306 utm.northing = center->northing + ( ympp * height / 2 );
308 a_coords_utm_to_latlon ( &utm, &ll2 );
311 /* find corner coords in lat/lon.
312 start at whichever is less: top or bottom left lon. goto whichever more: top or bottom right lon
314 struct LatLon topleft, topright, bottomleft, bottomright;
317 temp_utm.easting -= (width/2)*xmpp;
318 temp_utm.northing += (height/2)*ympp;
319 a_coords_utm_to_latlon ( &temp_utm, &topleft );
320 temp_utm.easting += (width*xmpp);
321 a_coords_utm_to_latlon ( &temp_utm, &topright );
322 temp_utm.northing -= (height*ympp);
323 a_coords_utm_to_latlon ( &temp_utm, &bottomright );
324 temp_utm.easting -= (width*xmpp);
325 a_coords_utm_to_latlon ( &temp_utm, &bottomleft );
326 min.lon = (topleft.lon < bottomleft.lon) ? topleft.lon : bottomleft.lon;
327 max.lon = (topright.lon > bottomright.lon) ? topright.lon : bottomright.lon;
328 min.lat = (bottomleft.lat < bottomright.lat) ? bottomleft.lat : bottomright.lat;
329 max.lat = (topleft.lat > topright.lat) ? topleft.lat : topright.lat;
332 lon = ((double) ((long) ((min.lon)/ vcl->deg_inc))) * vcl->deg_inc;
333 ll.lon = ll2.lon = lon;
335 for (; ll.lon <= max.lon; ll.lon+=vcl->deg_inc, ll2.lon+=vcl->deg_inc )
337 a_coords_latlon_to_utm ( &ll, &utm );
338 x1 = ( (utm.easting - center->easting) / xmpp ) + (width / 2);
339 a_coords_latlon_to_utm ( &ll2, &utm );
340 x2 = ( (utm.easting - center->easting) / xmpp ) + (width / 2);
341 vik_viewport_draw_line (vp, vcl->gc, x1, height, x2, 0);
345 utm.easting = center->easting - ( xmpp * width / 2 );
347 a_coords_utm_to_latlon ( &utm, &ll );
349 utm.easting = center->easting + ( xmpp * width / 2 );
351 a_coords_utm_to_latlon ( &utm, &ll2 );
353 /* really lat, just reusing a variable */
354 lon = ((double) ((long) ((min.lat)/ vcl->deg_inc))) * vcl->deg_inc;
355 ll.lat = ll2.lat = lon;
357 for (; ll.lat <= max.lat ; ll.lat+=vcl->deg_inc, ll2.lat+=vcl->deg_inc )
359 a_coords_latlon_to_utm ( &ll, &utm );
360 x1 = (height / 2) - ( (utm.northing - center->northing) / ympp );
361 a_coords_latlon_to_utm ( &ll2, &utm );
362 x2 = (height / 2) - ( (utm.northing - center->northing) / ympp );
363 vik_viewport_draw_line (vp, vcl->gc, width, x2, 0, x1);
368 void vik_coord_layer_free ( VikCoordLayer *vcl )
370 if ( vcl->gc != NULL )
371 g_object_unref ( G_OBJECT(vcl->gc) );
373 if ( vcl->color != NULL )
374 gdk_color_free ( vcl->color );
377 static void coord_layer_update_gc ( VikCoordLayer *vcl, VikViewport *vp, const gchar *color )
382 gdk_color_free ( vcl->color );
384 gdk_color_parse( color, &InitColor);
385 vcl->color = gdk_color_copy( &InitColor );
388 g_object_unref ( G_OBJECT(vcl->gc) );
390 vcl->gc = vik_viewport_new_gc_from_color ( vp, vcl->color, vcl->line_thickness );
393 VikCoordLayer *vik_coord_layer_create ( VikViewport *vp )
395 VikCoordLayer *vcl = vik_coord_layer_new ();
396 coord_layer_update_gc ( vcl, vp, "red" );