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/gstdio.h>
29 #include <glib/gi18n.h>
34 #include "icons/icons.h"
36 VikLayerParam georef_layer_params[] = {
37 { "image", VIK_LAYER_PARAM_STRING, VIK_LAYER_NOT_IN_PROPERTIES },
38 { "corner_easting", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_NOT_IN_PROPERTIES },
39 { "corner_northing", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_NOT_IN_PROPERTIES },
40 { "mpp_easting", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_NOT_IN_PROPERTIES },
41 { "mpp_northing", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_NOT_IN_PROPERTIES },
44 enum { PARAM_IMAGE = 0, PARAM_CE, PARAM_CN, PARAM_ME, PARAM_MN, NUM_PARAMS };
46 static const gchar* georef_layer_tooltip ( VikGeorefLayer *vgl );
47 static void georef_layer_marshall( VikGeorefLayer *vgl, guint8 **data, gint *len );
48 static VikGeorefLayer *georef_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp );
49 static gboolean georef_layer_set_param ( VikGeorefLayer *vgl, guint16 id, VikLayerParamData data, VikViewport *vp, gboolean is_file_operation );
50 static VikLayerParamData georef_layer_get_param ( VikGeorefLayer *vgl, guint16 id, gboolean is_file_operation );
51 VikGeorefLayer *georef_layer_new ( );
52 VikGeorefLayer *georef_layer_create ( VikViewport *vp );
53 static void georef_layer_free ( VikGeorefLayer *vgl );
54 gboolean georef_layer_properties ( VikGeorefLayer *vgl, gpointer vp );
55 static void georef_layer_draw ( VikGeorefLayer *vgl, gpointer data );
56 static void georef_layer_add_menu_items ( VikGeorefLayer *vgl, GtkMenu *menu, gpointer vlp );
57 static void georef_layer_set_image ( VikGeorefLayer *vgl, const gchar *image );
58 static gboolean georef_layer_dialog ( VikGeorefLayer **vgl, gpointer vp, GtkWindow *w );
59 static void georef_layer_load_image ( VikGeorefLayer *vgl );
62 static gpointer georef_layer_move_create ( VikWindow *vw, VikViewport *vvp);
63 static gboolean georef_layer_move_release ( VikGeorefLayer *vgl, GdkEventButton *event, VikViewport *vvp );
64 static gboolean georef_layer_move_press ( VikGeorefLayer *vgl, GdkEventButton *event, VikViewport *vvp );
65 static gpointer georef_layer_zoom_create ( VikWindow *vw, VikViewport *vvp);
66 static gboolean georef_layer_zoom_press ( VikGeorefLayer *vgl, GdkEventButton *event, VikViewport *vvp );
68 static VikToolInterface georef_tools[] = {
69 { N_("Georef Move Map"), (VikToolConstructorFunc) georef_layer_move_create, NULL, NULL, NULL,
70 (VikToolMouseFunc) georef_layer_move_press, NULL, (VikToolMouseFunc) georef_layer_move_release,
71 (VikToolKeyFunc) NULL, GDK_CURSOR_IS_PIXMAP, &cursor_geomove_pixbuf },
73 { N_("Georef Zoom Tool"), (VikToolConstructorFunc) georef_layer_zoom_create, NULL, NULL, NULL,
74 (VikToolMouseFunc) georef_layer_zoom_press, NULL, NULL,
75 (VikToolKeyFunc) NULL, GDK_CURSOR_IS_PIXMAP, &cursor_geozoom_pixbuf },
78 VikLayerInterface vik_georef_layer_interface = {
80 &vikgeoreflayer_pixbuf, /*icon */
83 sizeof(georef_tools) / sizeof(VikToolInterface),
92 (VikLayerFuncCreate) georef_layer_create,
93 (VikLayerFuncRealize) NULL,
94 (VikLayerFuncPostRead) georef_layer_load_image,
95 (VikLayerFuncFree) georef_layer_free,
97 (VikLayerFuncProperties) georef_layer_properties,
98 (VikLayerFuncDraw) georef_layer_draw,
99 (VikLayerFuncChangeCoordMode) NULL,
101 (VikLayerFuncSetMenuItemsSelection) NULL,
102 (VikLayerFuncGetMenuItemsSelection) NULL,
104 (VikLayerFuncAddMenuItems) georef_layer_add_menu_items,
105 (VikLayerFuncSublayerAddMenuItems) NULL,
107 (VikLayerFuncSublayerRenameRequest) NULL,
108 (VikLayerFuncSublayerToggleVisible) NULL,
109 (VikLayerFuncSublayerTooltip) NULL,
110 (VikLayerFuncLayerTooltip) georef_layer_tooltip,
112 (VikLayerFuncMarshall) georef_layer_marshall,
113 (VikLayerFuncUnmarshall) georef_layer_unmarshall,
115 (VikLayerFuncSetParam) georef_layer_set_param,
116 (VikLayerFuncGetParam) georef_layer_get_param,
118 (VikLayerFuncReadFileData) NULL,
119 (VikLayerFuncWriteFileData) NULL,
121 (VikLayerFuncDeleteItem) NULL,
122 (VikLayerFuncCutItem) NULL,
123 (VikLayerFuncCopyItem) NULL,
124 (VikLayerFuncPasteItem) NULL,
125 (VikLayerFuncFreeCopiedItem) NULL,
126 (VikLayerFuncDragDropRequest) NULL,
129 struct _VikGeorefLayer {
134 gdouble mpp_easting, mpp_northing;
138 guint32 scaled_width, scaled_height;
140 gint click_x, click_y;
145 GType vik_georef_layer_get_type ()
147 static GType vgl_type = 0;
151 static const GTypeInfo vgl_info =
153 sizeof (VikGeorefLayerClass),
154 NULL, /* base_init */
155 NULL, /* base_finalize */
156 NULL, /* class init */
157 NULL, /* class_finalize */
158 NULL, /* class_data */
159 sizeof (VikGeorefLayer),
161 NULL /* instance init */
163 vgl_type = g_type_register_static ( VIK_LAYER_TYPE, "VikGeorefLayer", &vgl_info, 0 );
169 static const gchar* georef_layer_tooltip ( VikGeorefLayer *vgl )
174 static void georef_layer_marshall( VikGeorefLayer *vgl, guint8 **data, gint *len )
176 vik_layer_marshall_params ( VIK_LAYER(vgl), data, len );
179 static VikGeorefLayer *georef_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp )
181 VikGeorefLayer *rv = georef_layer_new ();
182 vik_layer_unmarshall_params ( VIK_LAYER(rv), data, len, vvp );
184 georef_layer_load_image ( rv );
189 static gboolean georef_layer_set_param ( VikGeorefLayer *vgl, guint16 id, VikLayerParamData data, VikViewport *vp, gboolean is_file_operation )
193 case PARAM_IMAGE: georef_layer_set_image ( vgl, data.s ); break;
194 case PARAM_CN: vgl->corner.northing = data.d; break;
195 case PARAM_CE: vgl->corner.easting = data.d; break;
196 case PARAM_MN: vgl->mpp_northing = data.d; break;
197 case PARAM_ME: vgl->mpp_easting = data.d; break;
202 static VikLayerParamData georef_layer_get_param ( VikGeorefLayer *vgl, guint16 id, gboolean is_file_operation )
204 VikLayerParamData rv;
207 case PARAM_IMAGE: rv.s = vgl->image ? vgl->image : ""; break;
208 case PARAM_CN: rv.d = vgl->corner.northing; break;
209 case PARAM_CE: rv.d = vgl->corner.easting; break;
210 case PARAM_MN: rv.d = vgl->mpp_northing; break;
211 case PARAM_ME: rv.d = vgl->mpp_easting; break;
216 VikGeorefLayer *georef_layer_new ( )
218 VikGeorefLayer *vgl = VIK_GEOREF_LAYER ( g_object_new ( VIK_GEOREF_LAYER_TYPE, NULL ) );
219 vik_layer_init ( VIK_LAYER(vgl), VIK_LAYER_GEOREF );
226 vgl->scaled_width = 0;
227 vgl->scaled_height = 0;
231 static void georef_layer_draw ( VikGeorefLayer *vgl, gpointer data )
236 VikViewport *vp = VIK_VIEWPORT(data);
237 struct UTM utm_middle;
238 gdouble xmpp = vik_viewport_get_xmpp(vp), ympp = vik_viewport_get_ympp(vp);
239 GdkPixbuf *pixbuf = vgl->pixbuf;
240 guint layer_width = vgl->width;
241 guint layer_height = vgl->height;
243 vik_coord_to_utm ( vik_viewport_get_center ( vp ), &utm_middle );
245 /* scale the pixbuf if it doesn't match our dimensions */
246 if ( xmpp != vgl->mpp_easting || ympp != vgl->mpp_northing )
248 layer_width = round(vgl->width * vgl->mpp_easting / xmpp);
249 layer_height = round(vgl->height * vgl->mpp_northing / ympp);
251 /* rescale if necessary */
252 if (layer_width == vgl->scaled_width && layer_height == vgl->scaled_height && vgl->scaled != NULL)
253 pixbuf = vgl->scaled;
256 pixbuf = gdk_pixbuf_scale_simple(
263 if (vgl->scaled != NULL)
264 g_object_unref(vgl->scaled);
266 vgl->scaled = pixbuf;
267 vgl->scaled_width = layer_width;
268 vgl->scaled_height = layer_height;
272 guint width = vik_viewport_get_width(vp), height = vik_viewport_get_height(vp);
274 vgl->corner.zone = utm_middle.zone;
275 vgl->corner.letter = utm_middle.letter;
276 VikCoord corner_coord;
277 vik_coord_load_from_utm ( &corner_coord, vik_viewport_get_coord_mode(vp), &(vgl->corner) );
278 vik_viewport_coord_to_screen ( vp, &corner_coord, &x, &y );
279 if ( (x < 0 || x < width) && (y < 0 || y < height) && x+layer_width > 0 && y+layer_height > 0 )
280 vik_viewport_draw_pixbuf ( vp, pixbuf, 0, 0, x, y, layer_width, layer_height ); /* todo: draw only what we need to. */
284 static void georef_layer_free ( VikGeorefLayer *vgl )
286 if ( vgl->image != NULL )
287 g_free ( vgl->image );
288 if ( vgl->scaled != NULL )
289 g_object_unref ( vgl->scaled );
292 VikGeorefLayer *georef_layer_create ( VikViewport *vp )
294 return georef_layer_new ();
297 gboolean georef_layer_properties ( VikGeorefLayer *vgl, gpointer vp )
299 return georef_layer_dialog ( &vgl, vp, VIK_GTK_WINDOW_FROM_WIDGET(vp) );
302 static void georef_layer_load_image ( VikGeorefLayer *vgl )
305 if ( vgl->image == NULL )
309 g_object_unref ( G_OBJECT(vgl->pixbuf) );
312 g_object_unref ( G_OBJECT(vgl->scaled) );
316 vgl->pixbuf = gdk_pixbuf_new_from_file ( vgl->image, &gx );
320 g_warning ( _("Couldn't open image file: %s"), gx->message );
325 vgl->width = gdk_pixbuf_get_width ( vgl->pixbuf );
326 vgl->height = gdk_pixbuf_get_height ( vgl->pixbuf );
329 /* should find length and width here too */
332 static void georef_layer_set_image ( VikGeorefLayer *vgl, const gchar *image )
335 g_free ( vgl->image );
338 g_object_unref ( vgl->scaled );
343 vgl->image = g_strdup ( image );
346 static gboolean world_file_read_line ( gchar *buffer, gint size, FILE *f, GtkWidget *widget, gboolean use_value )
348 if (!fgets ( buffer, 1024, f ))
350 a_dialog_error_msg ( VIK_GTK_WINDOW_FROM_WIDGET(widget), _("Unexpected end of file reading World file.") );
358 gdouble val = g_strtod ( buffer, NULL );
359 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(widget), val > 0 ? val : -val );
364 static void georef_layer_dialog_load ( GtkWidget *pass_along[4] )
366 GtkWidget *file_selector = gtk_file_chooser_dialog_new (_("Choose World file"),
368 GTK_FILE_CHOOSER_ACTION_OPEN,
369 GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
370 GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
373 if ( gtk_dialog_run ( GTK_DIALOG ( file_selector ) ) == GTK_RESPONSE_ACCEPT )
375 FILE *f = g_fopen ( gtk_file_chooser_get_filename ( GTK_FILE_CHOOSER(file_selector) ), "r" );
376 gtk_widget_destroy ( file_selector );
379 a_dialog_error_msg ( VIK_GTK_WINDOW_FROM_WIDGET(pass_along[0]), _("The World file you requested could not be opened for reading.") );
384 gchar *buffer = g_malloc ( 1024 * sizeof(gchar) );
385 if ( world_file_read_line ( buffer, 1024, f, pass_along[0], TRUE ) && world_file_read_line ( buffer, 1024, f, pass_along[0], FALSE)
386 && world_file_read_line ( buffer, 1024, f, pass_along[0], FALSE ) && world_file_read_line ( buffer, 1024, f, pass_along[1], TRUE)
387 && world_file_read_line ( buffer, 1024, f, pass_along[2], TRUE ) && world_file_read_line ( buffer, 1024, f, pass_along[3], TRUE ) )
396 gtk_widget_destroy ( file_selector );
399 file selection dialog
400 file opener for reading, if NULL, send error_msg ( VIK_GTK_WINDOW_FROM_WIDGET(pass_along[0]) )
401 does that catch directories too?
402 read lines -- if not enough lines, give error.
403 if anything outside, give error. define range with #define CONSTANTS
404 put 'em in thar widgets, and that's it.
408 static void georef_layer_export_params ( gpointer *pass_along[2] )
410 VikGeorefLayer *vgl = VIK_GEOREF_LAYER(pass_along[0]);
411 GtkWidget *file_selector = gtk_file_chooser_dialog_new (_("Choose World file"),
413 GTK_FILE_CHOOSER_ACTION_SAVE,
414 GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
415 GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
417 if ( gtk_dialog_run ( GTK_DIALOG ( file_selector ) ) == GTK_RESPONSE_ACCEPT )
419 FILE *f = g_fopen ( gtk_file_chooser_get_filename ( GTK_FILE_CHOOSER(file_selector) ), "w" );
421 gtk_widget_destroy ( file_selector );
424 a_dialog_error_msg ( VIK_GTK_WINDOW_FROM_WIDGET(pass_along[0]), _("The file you requested could not be opened for writing.") );
429 fprintf ( f, "%f\n%f\n%f\n%f\n%f\n%f\n", vgl->mpp_easting, vgl->mpp_northing, 0.0, 0.0, vgl->corner.easting, vgl->corner.northing );
435 gtk_widget_destroy ( file_selector );
438 /* returns TRUE if OK was pressed. */
439 static gboolean georef_layer_dialog ( VikGeorefLayer **vgl, gpointer vp, GtkWindow *w )
441 GtkWidget *dialog = gtk_dialog_new_with_buttons (_("Layer Properties"),
443 GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
449 /* Default to reject as user really needs to specify map file first */
450 gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_REJECT );
451 GtkWidget *response_w = NULL;
452 #if GTK_CHECK_VERSION (2, 20, 0)
453 response_w = gtk_dialog_get_widget_for_response ( GTK_DIALOG(dialog), GTK_RESPONSE_REJECT );
455 GtkWidget *table, *wfp_hbox, *wfp_label, *wfp_button, *ce_label, *ce_spin, *cn_label, *cn_spin, *xlabel, *xspin, *ylabel, *yspin, *imagelabel, *imageentry;
457 GtkWidget *pass_along[4];
459 table = gtk_table_new ( 6, 2, FALSE );
460 gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), table, TRUE, TRUE, 0 );
462 wfp_hbox = gtk_hbox_new ( FALSE, 0 );
463 wfp_label = gtk_label_new ( _("World File Parameters:") );
464 wfp_button = gtk_button_new_with_label ( _("Load From File...") );
466 gtk_box_pack_start ( GTK_BOX(wfp_hbox), wfp_label, TRUE, TRUE, 0 );
467 gtk_box_pack_start ( GTK_BOX(wfp_hbox), wfp_button, FALSE, FALSE, 3 );
469 ce_label = gtk_label_new ( _("Corner pixel easting:") );
470 ce_spin = gtk_spin_button_new ( (GtkAdjustment *) gtk_adjustment_new ( 4, 0.0, 1500000.0, 1, 5, 0 ), 1, 4 );
471 gtk_widget_set_tooltip_text ( GTK_WIDGET(ce_spin), _("the UTM \"easting\" value of the upper-right corner pixel of the map") );
473 cn_label = gtk_label_new ( _("Corner pixel northing:") );
474 cn_spin = gtk_spin_button_new ( (GtkAdjustment *) gtk_adjustment_new ( 4, 0.0, 9000000.0, 1, 5, 0 ), 1, 4 );
475 gtk_widget_set_tooltip_text ( GTK_WIDGET(cn_spin), _("the UTM \"northing\" value of the upper-right corner pixel of the map") );
477 xlabel = gtk_label_new ( _("X (easting) scale (mpp): "));
478 ylabel = gtk_label_new ( _("Y (northing) scale (mpp): "));
480 xspin = gtk_spin_button_new ( (GtkAdjustment *) gtk_adjustment_new ( 4, VIK_VIEWPORT_MIN_ZOOM, VIK_VIEWPORT_MAX_ZOOM, 1, 5, 0 ), 1, 8 );
481 gtk_widget_set_tooltip_text ( GTK_WIDGET(xspin), _("the scale of the map in the X direction (meters per pixel)") );
482 yspin = gtk_spin_button_new ( (GtkAdjustment *) gtk_adjustment_new ( 4, VIK_VIEWPORT_MIN_ZOOM, VIK_VIEWPORT_MAX_ZOOM, 1, 5, 0 ), 1, 8 );
483 gtk_widget_set_tooltip_text ( GTK_WIDGET(yspin), _("the scale of the map in the Y direction (meters per pixel)") );
485 imagelabel = gtk_label_new ( _("Map Image:") );
486 imageentry = vik_file_entry_new (GTK_FILE_CHOOSER_ACTION_OPEN);
490 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(ce_spin), (*vgl)->corner.easting );
491 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(cn_spin), (*vgl)->corner.northing );
492 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(xspin), (*vgl)->mpp_easting );
493 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(yspin), (*vgl)->mpp_northing );
495 vik_file_entry_set_filename ( VIK_FILE_ENTRY(imageentry), (*vgl)->image );
499 VikCoord corner_coord;
501 vik_viewport_screen_to_coord ( VIK_VIEWPORT(vp), 0, 0, &corner_coord );
502 vik_coord_to_utm ( &corner_coord, &utm );
503 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(ce_spin), utm.easting );
504 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(cn_spin), utm.northing );
505 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(xspin), vik_viewport_get_xmpp ( VIK_VIEWPORT(vp) ) );
506 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(yspin), vik_viewport_get_ympp ( VIK_VIEWPORT(vp) ) );
509 gtk_table_attach_defaults ( GTK_TABLE(table), imagelabel, 0, 1, 0, 1 );
510 gtk_table_attach_defaults ( GTK_TABLE(table), imageentry, 1, 2, 0, 1 );
511 gtk_table_attach_defaults ( GTK_TABLE(table), wfp_hbox, 0, 2, 1, 2 );
512 gtk_table_attach_defaults ( GTK_TABLE(table), xlabel, 0, 1, 2, 3 );
513 gtk_table_attach_defaults ( GTK_TABLE(table), xspin, 1, 2, 2, 3 );
514 gtk_table_attach_defaults ( GTK_TABLE(table), ylabel, 0, 1, 3, 4 );
515 gtk_table_attach_defaults ( GTK_TABLE(table), yspin, 1, 2, 3, 4 );
516 gtk_table_attach_defaults ( GTK_TABLE(table), ce_label, 0, 1, 4, 5 );
517 gtk_table_attach_defaults ( GTK_TABLE(table), ce_spin, 1, 2, 4, 5 );
518 gtk_table_attach_defaults ( GTK_TABLE(table), cn_label, 0, 1, 5, 6 );
519 gtk_table_attach_defaults ( GTK_TABLE(table), cn_spin, 1, 2, 5, 6 );
521 pass_along[0] = xspin;
522 pass_along[1] = yspin;
523 pass_along[2] = ce_spin;
524 pass_along[3] = cn_spin;
525 g_signal_connect_swapped ( G_OBJECT(wfp_button), "clicked", G_CALLBACK(georef_layer_dialog_load), pass_along );
528 gtk_widget_grab_focus ( response_w );
530 gtk_widget_show_all ( table );
532 if ( gtk_dialog_run ( GTK_DIALOG(dialog) ) == GTK_RESPONSE_ACCEPT )
536 *vgl = georef_layer_new ();
537 vik_layer_rename ( VIK_LAYER(*vgl), vik_georef_layer_interface.name );
539 (*vgl)->corner.easting = gtk_spin_button_get_value ( GTK_SPIN_BUTTON(ce_spin) );
540 (*vgl)->corner.northing = gtk_spin_button_get_value ( GTK_SPIN_BUTTON(cn_spin) );
541 (*vgl)->mpp_easting = gtk_spin_button_get_value ( GTK_SPIN_BUTTON(xspin) );
542 (*vgl)->mpp_northing = gtk_spin_button_get_value ( GTK_SPIN_BUTTON(yspin) );
543 if ( (!(*vgl)->image) || strcmp( (*vgl)->image, vik_file_entry_get_filename(VIK_FILE_ENTRY(imageentry)) ) != 0 )
545 georef_layer_set_image ( *vgl, vik_file_entry_get_filename(VIK_FILE_ENTRY(imageentry)) );
546 georef_layer_load_image ( *vgl );
549 gtk_widget_destroy ( GTK_WIDGET(dialog) );
552 gtk_widget_destroy ( GTK_WIDGET(dialog) );
556 static void georef_layer_zoom_to_fit ( gpointer vgl_vlp[2] )
558 vik_viewport_set_xmpp ( vik_layers_panel_get_viewport(VIK_LAYERS_PANEL(vgl_vlp[1])), VIK_GEOREF_LAYER(vgl_vlp[0])->mpp_easting );
559 vik_viewport_set_ympp ( vik_layers_panel_get_viewport(VIK_LAYERS_PANEL(vgl_vlp[1])), VIK_GEOREF_LAYER(vgl_vlp[0])->mpp_northing );
560 vik_layers_panel_emit_update ( VIK_LAYERS_PANEL(vgl_vlp[1]) );
563 static void georef_layer_goto_center ( gpointer vgl_vlp[2] )
565 VikGeorefLayer *vgl = VIK_GEOREF_LAYER ( vgl_vlp[0] );
566 VikViewport *vp = vik_layers_panel_get_viewport(VIK_LAYERS_PANEL(vgl_vlp[1]));
570 vik_coord_to_utm ( vik_viewport_get_center ( vp ), &utm );
572 utm.easting = vgl->corner.easting + (vgl->width * vgl->mpp_easting / 2); /* only an approximation */
573 utm.northing = vgl->corner.northing - (vgl->height * vgl->mpp_northing / 2);
575 vik_coord_load_from_utm ( &coord, vik_viewport_get_coord_mode ( vp ), &utm );
576 vik_viewport_set_center_coord ( vp, &coord );
578 vik_layers_panel_emit_update ( VIK_LAYERS_PANEL(vgl_vlp[1]) );
581 static void georef_layer_add_menu_items ( VikGeorefLayer *vgl, GtkMenu *menu, gpointer vlp )
583 static gpointer pass_along[2];
588 item = gtk_menu_item_new();
589 gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
590 gtk_widget_show ( item );
592 item = gtk_menu_item_new_with_mnemonic ( _("_Zoom to Fit Map") );
593 g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(georef_layer_zoom_to_fit), pass_along );
594 gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
595 gtk_widget_show ( item );
597 item = gtk_menu_item_new_with_mnemonic ( _("_Goto Map Center") );
598 g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(georef_layer_goto_center), pass_along );
599 gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
600 gtk_widget_show ( item );
602 item = gtk_menu_item_new_with_mnemonic ( _("_Export to World File") );
603 g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(georef_layer_export_params), pass_along );
604 gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
605 gtk_widget_show ( item );
609 static gpointer georef_layer_move_create ( VikWindow *vw, VikViewport *vvp)
614 static gboolean georef_layer_move_release ( VikGeorefLayer *vgl, GdkEventButton *event, VikViewport *vvp )
616 if (!vgl || vgl->vl.type != VIK_LAYER_GEOREF)
619 if ( vgl->click_x != -1 )
621 vgl->corner.easting += (event->x - vgl->click_x) * vik_viewport_get_xmpp (vvp);
622 vgl->corner.northing -= (event->y - vgl->click_y) * vik_viewport_get_ympp (vvp);
623 vik_layer_emit_update ( VIK_LAYER(vgl) );
626 return FALSE; /* I didn't move anything on this layer! */
629 static gpointer georef_layer_zoom_create ( VikWindow *vw, VikViewport *vvp)
634 static gboolean georef_layer_zoom_press ( VikGeorefLayer *vgl, GdkEventButton *event, VikViewport *vvp )
636 if (!vgl || vgl->vl.type != VIK_LAYER_GEOREF)
638 if ( event->button == 1 )
640 if ( vgl->mpp_easting < (VIK_VIEWPORT_MAX_ZOOM / 1.05) && vgl->mpp_northing < (VIK_VIEWPORT_MAX_ZOOM / 1.05) )
642 vgl->mpp_easting *= 1.01;
643 vgl->mpp_northing *= 1.01;
648 if ( vgl->mpp_easting > (VIK_VIEWPORT_MIN_ZOOM * 1.05) && vgl->mpp_northing > (VIK_VIEWPORT_MIN_ZOOM * 1.05) )
650 vgl->mpp_easting /= 1.01;
651 vgl->mpp_northing /= 1.01;
654 vik_viewport_set_xmpp ( vvp, vgl->mpp_easting );
655 vik_viewport_set_ympp ( vvp, vgl->mpp_northing );
656 vik_layer_emit_update ( VIK_LAYER(vgl) );
660 static gboolean georef_layer_move_press ( VikGeorefLayer *vgl, GdkEventButton *event, VikViewport *vvp )
662 if (!vgl || vgl->vl.type != VIK_LAYER_GEOREF)
664 vgl->click_x = event->x;
665 vgl->click_y = event->y;