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
28 #include <glib/gi18n.h>
31 #include "icons/icons.h"
33 static void coord_layer_marshall( VikCoordLayer *vcl, guint8 **data, gint *len );
34 static VikCoordLayer *coord_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp );
35 static gboolean coord_layer_set_param ( VikCoordLayer *vcl, guint16 id, VikLayerParamData data, VikViewport *vp, gboolean is_file_operation );
36 static VikLayerParamData coord_layer_get_param ( VikCoordLayer *vcl, guint16 id, gboolean is_file_operation );
37 static void coord_layer_update_gc ( VikCoordLayer *vcl, VikViewport *vp, const gchar *color );
38 static void coord_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file );
40 static VikLayerParamScale param_scales[] = {
41 { 0.05, 60.0, 0.25, 10 },
45 static VikLayerParam coord_layer_params[] = {
46 { "color", VIK_LAYER_PARAM_COLOR, VIK_LAYER_GROUP_NONE, N_("Color:"), VIK_LAYER_WIDGET_COLOR, 0 },
47 { "min_inc", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, N_("Minutes Width:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 },
48 { "line_thickness", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Line Thickness:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 1 },
52 enum { PARAM_COLOR = 0, PARAM_MIN_INC, PARAM_LINE_THICKNESS, NUM_PARAMS };
54 VikLayerInterface vik_coord_layer_interface = {
56 &vikcoordlayer_pixbuf,
68 (VikLayerFuncCreate) vik_coord_layer_create,
69 (VikLayerFuncRealize) NULL,
70 (VikLayerFuncPostRead) coord_layer_post_read,
71 (VikLayerFuncFree) vik_coord_layer_free,
73 (VikLayerFuncProperties) NULL,
74 (VikLayerFuncDraw) vik_coord_layer_draw,
75 (VikLayerFuncChangeCoordMode) NULL,
77 (VikLayerFuncSetMenuItemsSelection) NULL,
78 (VikLayerFuncGetMenuItemsSelection) NULL,
80 (VikLayerFuncAddMenuItems) NULL,
81 (VikLayerFuncSublayerAddMenuItems) NULL,
83 (VikLayerFuncSublayerRenameRequest) NULL,
84 (VikLayerFuncSublayerToggleVisible) NULL,
85 (VikLayerFuncSublayerTooltip) NULL,
86 (VikLayerFuncLayerTooltip) NULL,
87 (VikLayerFuncLayerSelected) NULL,
89 (VikLayerFuncMarshall) coord_layer_marshall,
90 (VikLayerFuncUnmarshall) coord_layer_unmarshall,
92 (VikLayerFuncSetParam) coord_layer_set_param,
93 (VikLayerFuncGetParam) coord_layer_get_param,
95 (VikLayerFuncReadFileData) NULL,
96 (VikLayerFuncWriteFileData) NULL,
98 (VikLayerFuncDeleteItem) NULL,
99 (VikLayerFuncCutItem) NULL,
100 (VikLayerFuncCopyItem) NULL,
101 (VikLayerFuncPasteItem) NULL,
102 (VikLayerFuncFreeCopiedItem) NULL,
103 (VikLayerFuncDragDropRequest) NULL,
105 (VikLayerFuncSelectClick) NULL,
106 (VikLayerFuncSelectMove) NULL,
107 (VikLayerFuncSelectRelease) NULL,
108 (VikLayerFuncSelectedViewportMenu) NULL,
111 struct _VikCoordLayer {
115 guint8 line_thickness;
119 GType vik_coord_layer_get_type ()
121 static GType vcl_type = 0;
125 static const GTypeInfo vcl_info =
127 sizeof (VikCoordLayerClass),
128 NULL, /* base_init */
129 NULL, /* base_finalize */
130 NULL, /* class init */
131 NULL, /* class_finalize */
132 NULL, /* class_data */
133 sizeof (VikCoordLayer),
135 NULL /* instance init */
137 vcl_type = g_type_register_static ( VIK_LAYER_TYPE, "VikCoordLayer", &vcl_info, 0 );
143 static void coord_layer_marshall( VikCoordLayer *vcl, guint8 **data, gint *len )
145 vik_layer_marshall_params ( VIK_LAYER(vcl), data, len );
148 static VikCoordLayer *coord_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp )
150 VikCoordLayer *rv = vik_coord_layer_new ();
151 vik_layer_unmarshall_params ( VIK_LAYER(rv), data, len, vvp );
155 gboolean coord_layer_set_param ( VikCoordLayer *vcl, guint16 id, VikLayerParamData data, VikViewport *vp, gboolean is_file_operation )
159 case PARAM_COLOR: if ( vcl->color ) gdk_color_free ( vcl->color ); vcl->color = gdk_color_copy( &(data.c)); break;
160 case PARAM_MIN_INC: vcl->deg_inc = data.d / 60.0; break;
161 case PARAM_LINE_THICKNESS: if ( data.u >= 1 && data.u <= 15 ) vcl->line_thickness = data.u; break;
166 static VikLayerParamData coord_layer_get_param ( VikCoordLayer *vcl, guint16 id, gboolean is_file_operation )
168 VikLayerParamData rv;
174 rv.c.pixel = vcl->color->pixel;
175 rv.c.red = vcl->color->red;
176 rv.c.green = vcl->color->green;
177 rv.c.blue = vcl->color->blue;
180 case PARAM_MIN_INC: rv.d = vcl->deg_inc * 60.0; break;
181 case PARAM_LINE_THICKNESS: rv.i = vcl->line_thickness; break;
186 static void coord_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file )
188 VikCoordLayer *vcl = VIK_COORD_LAYER(vl);
190 g_object_unref ( G_OBJECT(vcl->gc) );
192 vcl->gc = vik_viewport_new_gc_from_color ( vp, vcl->color, vcl->line_thickness );
196 VikCoordLayer *vik_coord_layer_new ( )
200 VikCoordLayer *vcl = VIK_COORD_LAYER ( g_object_new ( VIK_COORD_LAYER_TYPE, NULL ) );
201 vik_layer_init ( VIK_LAYER(vcl), VIK_LAYER_COORD );
204 InitColor.red = 65535;
205 InitColor.green = 65535;
206 InitColor.blue = 65535;
209 vcl->deg_inc = 1.0/60.0;
210 vcl->line_thickness = 3;
211 vcl->color = gdk_color_copy (&InitColor);
215 void vik_coord_layer_draw ( VikCoordLayer *vcl, gpointer data )
217 VikViewport *vp = (VikViewport *) data;
223 if ( vik_viewport_get_coord_mode(vp) != VIK_COORD_UTM )
225 VikCoord left, right, left2, right2;
227 gint x1, y1, x2, y2, smod = 1, mmod = 1;
228 gboolean mins = FALSE, secs = FALSE;
229 GdkGC *dgc = vik_viewport_new_gc_from_color(vp, vcl->color, vcl->line_thickness);
230 GdkGC *mgc = vik_viewport_new_gc_from_color(vp, vcl->color, MAX(vcl->line_thickness/2, 1));
231 GdkGC *sgc = vik_viewport_new_gc_from_color(vp, vcl->color, MAX(vcl->line_thickness/5, 1));
233 vik_viewport_screen_to_coord ( vp, 0, 0, &left );
234 vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), 0, &right );
235 vik_viewport_screen_to_coord ( vp, 0, vik_viewport_get_height(vp), &left2 );
236 vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), vik_viewport_get_height(vp), &right2 );
238 #define CLINE(gc, c1, c2) { \
239 vik_viewport_coord_to_screen(vp, (c1), &x1, &y1); \
240 vik_viewport_coord_to_screen(vp, (c2), &x2, &y2); \
241 vik_viewport_draw_line (vp, (gc), x1, y1, x2, y2); \
246 if (60*fabs(l-r) < 4) {
248 smod = MIN(6, (int)ceil(3600*fabs(l-r)/30.0));
252 mmod = MIN(6, (int)ceil(60*fabs(l-r)/30.0));
254 for (i=floor(l*60); i<ceil(r*60); i+=1.0) {
256 for (j=i*60+1; j<(i+1)*60; j+=1.0) {
257 left.east_west = j/3600.0;
258 left2.east_west = j/3600.0;
259 if ((int)j % smod == 0) CLINE(sgc, &left, &left2);
263 left.east_west = i/60.0;
264 left2.east_west = i/60.0;
265 if ((int)i % mmod == 0) CLINE(mgc, &left, &left2);
267 if ((int)i % 60 == 0) {
268 left.east_west = i/60.0;
269 left2.east_west = i/60.0;
270 CLINE(dgc, &left, &left2);
274 vik_viewport_screen_to_coord ( vp, 0, 0, &left );
275 l = left2.north_south;
276 r = left.north_south;
277 for (i=floor(l*60); i<ceil(r*60); i+=1.0) {
279 for (j=i*60+1; j<(i+1)*60; j+=1.0) {
280 left.north_south = j/3600.0;
281 right.north_south = j/3600.0;
282 if ((int)j % smod == 0) CLINE(sgc, &left, &right);
286 left.north_south = i/60.0;
287 right.north_south = i/60.0;
288 if ((int)i % mmod == 0) CLINE(mgc, &left, &right);
290 if ((int)i % 60 == 0) {
291 left.north_south = i/60.0;
292 right.north_south = i/60.0;
293 CLINE(dgc, &left, &right);
303 if ( vik_viewport_get_coord_mode(vp) == VIK_COORD_UTM )
305 const struct UTM *center = (const struct UTM *)vik_viewport_get_center ( vp );
306 gdouble xmpp = vik_viewport_get_xmpp ( vp ), ympp = vik_viewport_get_ympp ( vp );
307 guint16 width = vik_viewport_get_width ( vp ), height = vik_viewport_get_height ( vp );
308 struct LatLon ll, ll2, min, max;
314 utm.northing = center->northing - ( ympp * height / 2 );
316 a_coords_utm_to_latlon ( &utm, &ll );
318 utm.northing = center->northing + ( ympp * height / 2 );
320 a_coords_utm_to_latlon ( &utm, &ll2 );
323 /* find corner coords in lat/lon.
324 start at whichever is less: top or bottom left lon. goto whichever more: top or bottom right lon
326 struct LatLon topleft, topright, bottomleft, bottomright;
329 temp_utm.easting -= (width/2)*xmpp;
330 temp_utm.northing += (height/2)*ympp;
331 a_coords_utm_to_latlon ( &temp_utm, &topleft );
332 temp_utm.easting += (width*xmpp);
333 a_coords_utm_to_latlon ( &temp_utm, &topright );
334 temp_utm.northing -= (height*ympp);
335 a_coords_utm_to_latlon ( &temp_utm, &bottomright );
336 temp_utm.easting -= (width*xmpp);
337 a_coords_utm_to_latlon ( &temp_utm, &bottomleft );
338 min.lon = (topleft.lon < bottomleft.lon) ? topleft.lon : bottomleft.lon;
339 max.lon = (topright.lon > bottomright.lon) ? topright.lon : bottomright.lon;
340 min.lat = (bottomleft.lat < bottomright.lat) ? bottomleft.lat : bottomright.lat;
341 max.lat = (topleft.lat > topright.lat) ? topleft.lat : topright.lat;
344 /* Can zoom out more than whole world and so the above can give invalid positions */
345 /* Restrict values properly so drawing doesn't go into a near 'infinite' loop */
346 if ( min.lon < -180.0 )
348 if ( max.lon > 180.0 )
350 if ( min.lat < -90.0 )
352 if ( max.lat > 90.0 )
355 lon = ((double) ((long) ((min.lon)/ vcl->deg_inc))) * vcl->deg_inc;
356 ll.lon = ll2.lon = lon;
358 for (; ll.lon <= max.lon; ll.lon+=vcl->deg_inc, ll2.lon+=vcl->deg_inc )
360 a_coords_latlon_to_utm ( &ll, &utm );
361 x1 = ( (utm.easting - center->easting) / xmpp ) + (width / 2);
362 a_coords_latlon_to_utm ( &ll2, &utm );
363 x2 = ( (utm.easting - center->easting) / xmpp ) + (width / 2);
364 vik_viewport_draw_line (vp, vcl->gc, x1, height, x2, 0);
368 utm.easting = center->easting - ( xmpp * width / 2 );
370 a_coords_utm_to_latlon ( &utm, &ll );
372 utm.easting = center->easting + ( xmpp * width / 2 );
374 a_coords_utm_to_latlon ( &utm, &ll2 );
376 /* really lat, just reusing a variable */
377 lon = ((double) ((long) ((min.lat)/ vcl->deg_inc))) * vcl->deg_inc;
378 ll.lat = ll2.lat = lon;
380 for (; ll.lat <= max.lat ; ll.lat+=vcl->deg_inc, ll2.lat+=vcl->deg_inc )
382 a_coords_latlon_to_utm ( &ll, &utm );
383 x1 = (height / 2) - ( (utm.northing - center->northing) / ympp );
384 a_coords_latlon_to_utm ( &ll2, &utm );
385 x2 = (height / 2) - ( (utm.northing - center->northing) / ympp );
386 vik_viewport_draw_line (vp, vcl->gc, width, x2, 0, x1);
391 void vik_coord_layer_free ( VikCoordLayer *vcl )
393 if ( vcl->gc != NULL )
394 g_object_unref ( G_OBJECT(vcl->gc) );
396 if ( vcl->color != NULL )
397 gdk_color_free ( vcl->color );
400 static void coord_layer_update_gc ( VikCoordLayer *vcl, VikViewport *vp, const gchar *color )
405 gdk_color_free ( vcl->color );
407 gdk_color_parse( color, &InitColor);
408 vcl->color = gdk_color_copy( &InitColor );
411 g_object_unref ( G_OBJECT(vcl->gc) );
413 vcl->gc = vik_viewport_new_gc_from_color ( vp, vcl->color, vcl->line_thickness );
416 VikCoordLayer *vik_coord_layer_create ( VikViewport *vp )
418 VikCoordLayer *vcl = vik_coord_layer_new ();
419 coord_layer_update_gc ( vcl, vp, "red" );