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 void coord_layer_marshall( VikCoordLayer *vcl, guint8 **data, gint *len );
27 static VikCoordLayer *coord_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp );
28 static gboolean coord_layer_set_param ( VikCoordLayer *vcl, guint16 id, VikLayerParamData data, VikViewport *vp );
29 static VikLayerParamData coord_layer_get_param ( VikCoordLayer *vcl, guint16 id );
30 static void coord_layer_update_gc ( VikCoordLayer *vcl, VikViewport *vp, const gchar *color );
31 static void coord_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file );
33 static VikLayerParamScale param_scales[] = {
34 { 0.05, 60.0, 0.25, 10 },
38 static VikLayerParam coord_layer_params[] = {
39 { "color", VIK_LAYER_PARAM_STRING, VIK_LAYER_GROUP_NONE, "Color:", VIK_LAYER_WIDGET_ENTRY },
40 { "min_inc", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, "Minutes Width:", VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 },
41 { "line_thickness", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, "Line Thickness:", VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 1 },
45 enum { PARAM_COLOR = 0, PARAM_MIN_INC, PARAM_LINE_THICKNESS, NUM_PARAMS };
47 VikLayerInterface vik_coord_layer_interface = {
61 (VikLayerFuncCreate) vik_coord_layer_create,
62 (VikLayerFuncRealize) NULL,
63 coord_layer_post_read,
64 (VikLayerFuncFree) vik_coord_layer_free,
66 (VikLayerFuncProperties) NULL,
67 (VikLayerFuncDraw) vik_coord_layer_draw,
68 (VikLayerFuncChangeCoordMode) NULL,
70 (VikLayerFuncSetMenuItemsSelection) NULL,
71 (VikLayerFuncGetMenuItemsSelection) NULL,
73 (VikLayerFuncAddMenuItems) NULL,
74 (VikLayerFuncSublayerAddMenuItems) NULL,
76 (VikLayerFuncSublayerRenameRequest) NULL,
77 (VikLayerFuncSublayerToggleVisible) NULL,
79 (VikLayerFuncMarshall) coord_layer_marshall,
80 (VikLayerFuncUnmarshall) coord_layer_unmarshall,
82 (VikLayerFuncSetParam) coord_layer_set_param,
83 (VikLayerFuncGetParam) coord_layer_get_param,
85 (VikLayerFuncReadFileData) NULL,
86 (VikLayerFuncWriteFileData) NULL,
88 (VikLayerFuncDeleteItem) NULL,
89 (VikLayerFuncCopyItem) NULL,
90 (VikLayerFuncPasteItem) NULL,
91 (VikLayerFuncFreeCopiedItem) NULL,
92 (VikLayerFuncDragDropRequest) NULL,
95 struct _VikCoordLayer {
99 guint8 line_thickness;
103 GType vik_coord_layer_get_type ()
105 static GType vcl_type = 0;
109 static const GTypeInfo vcl_info =
111 sizeof (VikCoordLayerClass),
112 NULL, /* base_init */
113 NULL, /* base_finalize */
114 NULL, /* class init */
115 NULL, /* class_finalize */
116 NULL, /* class_data */
117 sizeof (VikCoordLayer),
119 NULL /* instance init */
121 vcl_type = g_type_register_static ( VIK_LAYER_TYPE, "VikCoordLayer", &vcl_info, 0 );
127 static void coord_layer_marshall( VikCoordLayer *vcl, guint8 **data, gint *len )
129 vik_layer_marshall_params ( VIK_LAYER(vcl), data, len );
132 static VikCoordLayer *coord_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp )
134 VikCoordLayer *rv = vik_coord_layer_new ( vvp );
135 vik_layer_unmarshall_params ( VIK_LAYER(rv), data, len, vvp );
139 gboolean coord_layer_set_param ( VikCoordLayer *vcl, guint16 id, VikLayerParamData data, VikViewport *vp )
143 case PARAM_COLOR: if ( vcl->color ) g_free ( vcl->color ); vcl->color = g_strdup ( data.s ); break;
144 case PARAM_MIN_INC: vcl->deg_inc = data.d / 60.0; break;
145 case PARAM_LINE_THICKNESS: if ( data.u >= 1 && data.u <= 15 ) vcl->line_thickness = data.u; break;
150 static VikLayerParamData coord_layer_get_param ( VikCoordLayer *vcl, guint16 id )
152 VikLayerParamData rv;
155 case PARAM_COLOR: rv.s = vcl->color ? vcl->color : ""; break;
156 case PARAM_MIN_INC: rv.d = vcl->deg_inc * 60.0; break;
157 case PARAM_LINE_THICKNESS: rv.i = vcl->line_thickness; break;
162 static void coord_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file )
164 VikCoordLayer *vcl = VIK_COORD_LAYER(vl);
166 g_object_unref ( G_OBJECT(vcl->gc) );
168 vcl->gc = vik_viewport_new_gc ( vp, vcl->color, vcl->line_thickness );
171 VikCoordLayer *vik_coord_layer_new ( )
173 VikCoordLayer *vcl = VIK_COORD_LAYER ( g_object_new ( VIK_COORD_LAYER_TYPE, NULL ) );
174 vik_layer_init ( VIK_LAYER(vcl), VIK_LAYER_COORD );
177 vcl->deg_inc = 1.0/60.0;
178 vcl->line_thickness = 3;
183 void vik_coord_layer_draw ( VikCoordLayer *vcl, gpointer data )
185 VikViewport *vp = (VikViewport *) data;
191 if ( vik_viewport_get_coord_mode(vp) != VIK_COORD_UTM )
193 VikCoord left, right, left2, right2;
195 gint x1, y1, x2, y2, smod = 1, mmod = 1;
196 gboolean mins = FALSE, secs = FALSE;
197 GdkGC *dgc = vik_viewport_new_gc(vp, vcl->color, vcl->line_thickness);
198 GdkGC *mgc = vik_viewport_new_gc(vp, vcl->color, MAX(vcl->line_thickness/2, 1));
199 GdkGC *sgc = vik_viewport_new_gc(vp, vcl->color, MAX(vcl->line_thickness/5, 1));
201 vik_viewport_screen_to_coord ( vp, 0, 0, &left );
202 vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), 0, &right );
203 vik_viewport_screen_to_coord ( vp, 0, vik_viewport_get_height(vp), &left2 );
204 vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), vik_viewport_get_height(vp), &right2 );
206 #define CLINE(gc, c1, c2) { \
207 vik_viewport_coord_to_screen(vp, (c1), &x1, &y1); \
208 vik_viewport_coord_to_screen(vp, (c2), &x2, &y2); \
209 vik_viewport_draw_line (vp, (gc), x1, y1, x2, y2); \
214 if (60*fabs(l-r) < 4) {
216 smod = MIN(6, (int)ceil(3600*fabs(l-r)/30.0));
220 mmod = MIN(6, (int)ceil(60*fabs(l-r)/30.0));
222 for (i=floor(l*60); i<ceil(r*60); i+=1.0) {
224 for (j=i*60+1; j<(i+1)*60; j+=1.0) {
225 left.east_west = j/3600.0;
226 left2.east_west = j/3600.0;
227 if ((int)j % smod == 0) CLINE(sgc, &left, &left2);
231 left.east_west = i/60.0;
232 left2.east_west = i/60.0;
233 if ((int)i % mmod == 0) CLINE(mgc, &left, &left2);
235 if ((int)i % 60 == 0) {
236 left.east_west = i/60.0;
237 left2.east_west = i/60.0;
238 CLINE(dgc, &left, &left2);
242 vik_viewport_screen_to_coord ( vp, 0, 0, &left );
243 l = left2.north_south;
244 r = left.north_south;
245 for (i=floor(l*60); i<ceil(r*60); i+=1.0) {
247 for (j=i*60+1; j<(i+1)*60; j+=1.0) {
248 left.north_south = j/3600.0;
249 right.north_south = j/3600.0;
250 if ((int)j % smod == 0) CLINE(sgc, &left, &right);
254 left.north_south = i/60.0;
255 right.north_south = i/60.0;
256 if ((int)i % mmod == 0) CLINE(mgc, &left, &right);
258 if ((int)i % 60 == 0) {
259 left.north_south = i/60.0;
260 right.north_south = i/60.0;
261 CLINE(dgc, &left, &right);
271 if ( vik_viewport_get_coord_mode(vp) == VIK_COORD_UTM )
273 const struct UTM *center = (const struct UTM *)vik_viewport_get_center ( vp );
274 gdouble xmpp = vik_viewport_get_xmpp ( vp ), ympp = vik_viewport_get_ympp ( vp );
275 guint16 width = vik_viewport_get_width ( vp ), height = vik_viewport_get_height ( vp );
276 struct LatLon ll, ll2, min, max;
282 utm.northing = center->northing - ( ympp * height / 2 );
284 a_coords_utm_to_latlon ( &utm, &ll );
286 utm.northing = center->northing + ( ympp * height / 2 );
288 a_coords_utm_to_latlon ( &utm, &ll2 );
291 /* find corner coords in lat/lon.
292 start at whichever is less: top or bottom left lon. goto whichever more: top or bottom right lon
294 struct LatLon topleft, topright, bottomleft, bottomright;
297 temp_utm.easting -= (width/2)*xmpp;
298 temp_utm.northing += (height/2)*ympp;
299 a_coords_utm_to_latlon ( &temp_utm, &topleft );
300 temp_utm.easting += (width*xmpp);
301 a_coords_utm_to_latlon ( &temp_utm, &topright );
302 temp_utm.northing -= (height*ympp);
303 a_coords_utm_to_latlon ( &temp_utm, &bottomright );
304 temp_utm.easting -= (width*xmpp);
305 a_coords_utm_to_latlon ( &temp_utm, &bottomleft );
306 min.lon = (topleft.lon < bottomleft.lon) ? topleft.lon : bottomleft.lon;
307 max.lon = (topright.lon > bottomright.lon) ? topright.lon : bottomright.lon;
308 min.lat = (bottomleft.lat < bottomright.lat) ? bottomleft.lat : bottomright.lat;
309 max.lat = (topleft.lat > topright.lat) ? topleft.lat : topright.lat;
312 lon = ((double) ((long) ((min.lon)/ vcl->deg_inc))) * vcl->deg_inc;
313 ll.lon = ll2.lon = lon;
315 for (; ll.lon <= max.lon; ll.lon+=vcl->deg_inc, ll2.lon+=vcl->deg_inc )
317 a_coords_latlon_to_utm ( &ll, &utm );
318 x1 = ( (utm.easting - center->easting) / xmpp ) + (width / 2);
319 a_coords_latlon_to_utm ( &ll2, &utm );
320 x2 = ( (utm.easting - center->easting) / xmpp ) + (width / 2);
321 vik_viewport_draw_line (vp, vcl->gc, x1, height, x2, 0);
325 utm.easting = center->easting - ( xmpp * width / 2 );
327 a_coords_utm_to_latlon ( &utm, &ll );
329 utm.easting = center->easting + ( xmpp * width / 2 );
331 a_coords_utm_to_latlon ( &utm, &ll2 );
333 /* really lat, just reusing a variable */
334 lon = ((double) ((long) ((min.lat)/ vcl->deg_inc))) * vcl->deg_inc;
335 ll.lat = ll2.lat = lon;
337 for (; ll.lat <= max.lat ; ll.lat+=vcl->deg_inc, ll2.lat+=vcl->deg_inc )
339 a_coords_latlon_to_utm ( &ll, &utm );
340 x1 = (height / 2) - ( (utm.northing - center->northing) / ympp );
341 a_coords_latlon_to_utm ( &ll2, &utm );
342 x2 = (height / 2) - ( (utm.northing - center->northing) / ympp );
343 vik_viewport_draw_line (vp, vcl->gc, width, x2, 0, x1);
348 void vik_coord_layer_free ( VikCoordLayer *vcl )
350 if ( vcl->gc != NULL )
351 g_object_unref ( G_OBJECT(vcl->gc) );
353 if ( vcl->color != NULL )
354 g_free ( vcl->color );
357 static void coord_layer_update_gc ( VikCoordLayer *vcl, VikViewport *vp, const gchar *color )
360 g_free ( vcl->color );
362 vcl->color = g_strdup ( color );
365 g_object_unref ( G_OBJECT(vcl->gc) );
367 vcl->gc = vik_viewport_new_gc ( vp, vcl->color, vcl->line_thickness );
370 VikCoordLayer *vik_coord_layer_create ( VikViewport *vp )
372 VikCoordLayer *vcl = vik_coord_layer_new ();
373 coord_layer_update_gc ( vcl, vp, "red" );