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 void georef_layer_marshall( VikGeorefLayer *vgl, guint8 **data, gint *len );
47 static VikGeorefLayer *georef_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp );
48 static gboolean georef_layer_set_param ( VikGeorefLayer *vgl, guint16 id, VikLayerParamData data, VikViewport *vp, gboolean is_file_operation );
49 static VikLayerParamData georef_layer_get_param ( VikGeorefLayer *vgl, guint16 id, gboolean is_file_operation );
50 VikGeorefLayer *georef_layer_new ( );
51 VikGeorefLayer *georef_layer_create ( VikViewport *vp );
52 static void georef_layer_free ( VikGeorefLayer *vgl );
53 gboolean georef_layer_properties ( VikGeorefLayer *vgl, gpointer vp );
54 static void georef_layer_draw ( VikGeorefLayer *vgl, gpointer data );
55 static void georef_layer_add_menu_items ( VikGeorefLayer *vgl, GtkMenu *menu, gpointer vlp );
56 static void georef_layer_set_image ( VikGeorefLayer *vgl, const gchar *image );
57 static gboolean georef_layer_dialog ( VikGeorefLayer **vgl, gpointer vp, GtkWindow *w );
58 static void georef_layer_load_image ( VikGeorefLayer *vgl );
61 static gpointer georef_layer_move_create ( VikWindow *vw, VikViewport *vvp);
62 static gboolean georef_layer_move_release ( VikGeorefLayer *vgl, GdkEventButton *event, VikViewport *vvp );
63 static gboolean georef_layer_move_press ( VikGeorefLayer *vgl, GdkEventButton *event, VikViewport *vvp );
64 static gpointer georef_layer_zoom_create ( VikWindow *vw, VikViewport *vvp);
65 static gboolean georef_layer_zoom_press ( VikGeorefLayer *vgl, GdkEventButton *event, VikViewport *vvp );
67 static VikToolInterface georef_tools[] = {
68 { N_("Georef Move Map"), (VikToolConstructorFunc) georef_layer_move_create, NULL, NULL, NULL,
69 (VikToolMouseFunc) georef_layer_move_press, NULL, (VikToolMouseFunc) georef_layer_move_release,
70 (VikToolKeyFunc) NULL, GDK_CURSOR_IS_PIXMAP, &cursor_geomove_pixbuf },
72 { N_("Georef Zoom Tool"), (VikToolConstructorFunc) georef_layer_zoom_create, NULL, NULL, NULL,
73 (VikToolMouseFunc) georef_layer_zoom_press, NULL, NULL,
74 (VikToolKeyFunc) NULL, GDK_CURSOR_IS_PIXMAP, &cursor_geozoom_pixbuf },
77 VikLayerInterface vik_georef_layer_interface = {
79 &vikgeoreflayer_pixbuf, /*icon */
82 sizeof(georef_tools) / sizeof(VikToolInterface),
91 (VikLayerFuncCreate) georef_layer_create,
92 (VikLayerFuncRealize) NULL,
93 (VikLayerFuncPostRead) georef_layer_load_image,
94 (VikLayerFuncFree) georef_layer_free,
96 (VikLayerFuncProperties) georef_layer_properties,
97 (VikLayerFuncDraw) georef_layer_draw,
98 (VikLayerFuncChangeCoordMode) NULL,
100 (VikLayerFuncSetMenuItemsSelection) NULL,
101 (VikLayerFuncGetMenuItemsSelection) NULL,
103 (VikLayerFuncAddMenuItems) georef_layer_add_menu_items,
104 (VikLayerFuncSublayerAddMenuItems) NULL,
106 (VikLayerFuncSublayerRenameRequest) NULL,
107 (VikLayerFuncSublayerToggleVisible) NULL,
109 (VikLayerFuncMarshall) georef_layer_marshall,
110 (VikLayerFuncUnmarshall) georef_layer_unmarshall,
112 (VikLayerFuncSetParam) georef_layer_set_param,
113 (VikLayerFuncGetParam) georef_layer_get_param,
115 (VikLayerFuncReadFileData) NULL,
116 (VikLayerFuncWriteFileData) NULL,
118 (VikLayerFuncDeleteItem) NULL,
119 (VikLayerFuncCopyItem) NULL,
120 (VikLayerFuncPasteItem) NULL,
121 (VikLayerFuncFreeCopiedItem) NULL,
122 (VikLayerFuncDragDropRequest) NULL,
125 struct _VikGeorefLayer {
130 gdouble mpp_easting, mpp_northing;
134 guint32 scaled_width, scaled_height;
136 gint click_x, click_y;
141 GType vik_georef_layer_get_type ()
143 static GType vgl_type = 0;
147 static const GTypeInfo vgl_info =
149 sizeof (VikGeorefLayerClass),
150 NULL, /* base_init */
151 NULL, /* base_finalize */
152 NULL, /* class init */
153 NULL, /* class_finalize */
154 NULL, /* class_data */
155 sizeof (VikGeorefLayer),
157 NULL /* instance init */
159 vgl_type = g_type_register_static ( VIK_LAYER_TYPE, "VikGeorefLayer", &vgl_info, 0 );
165 static void georef_layer_marshall( VikGeorefLayer *vgl, guint8 **data, gint *len )
167 vik_layer_marshall_params ( VIK_LAYER(vgl), data, len );
170 static VikGeorefLayer *georef_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp )
172 VikGeorefLayer *rv = georef_layer_new ( vvp );
173 vik_layer_unmarshall_params ( VIK_LAYER(rv), data, len, vvp );
175 georef_layer_load_image ( rv );
180 static gboolean georef_layer_set_param ( VikGeorefLayer *vgl, guint16 id, VikLayerParamData data, VikViewport *vp, gboolean is_file_operation )
184 case PARAM_IMAGE: georef_layer_set_image ( vgl, data.s ); break;
185 case PARAM_CN: vgl->corner.northing = data.d; break;
186 case PARAM_CE: vgl->corner.easting = data.d; break;
187 case PARAM_MN: vgl->mpp_northing = data.d; break;
188 case PARAM_ME: vgl->mpp_easting = data.d; break;
193 static VikLayerParamData georef_layer_get_param ( VikGeorefLayer *vgl, guint16 id, gboolean is_file_operation )
195 VikLayerParamData rv;
198 case PARAM_IMAGE: rv.s = vgl->image ? vgl->image : ""; break;
199 case PARAM_CN: rv.d = vgl->corner.northing; break;
200 case PARAM_CE: rv.d = vgl->corner.easting; break;
201 case PARAM_MN: rv.d = vgl->mpp_northing; break;
202 case PARAM_ME: rv.d = vgl->mpp_easting; break;
207 VikGeorefLayer *georef_layer_new ( )
209 VikGeorefLayer *vgl = VIK_GEOREF_LAYER ( g_object_new ( VIK_GEOREF_LAYER_TYPE, NULL ) );
210 vik_layer_init ( VIK_LAYER(vgl), VIK_LAYER_GEOREF );
217 vgl->scaled_width = 0;
218 vgl->scaled_height = 0;
222 static void georef_layer_draw ( VikGeorefLayer *vgl, gpointer data )
227 VikViewport *vp = VIK_VIEWPORT(data);
228 struct UTM utm_middle;
229 gdouble xmpp = vik_viewport_get_xmpp(vp), ympp = vik_viewport_get_ympp(vp);
230 GdkPixbuf *pixbuf = vgl->pixbuf;
231 guint layer_width = vgl->width;
232 guint layer_height = vgl->height;
234 vik_coord_to_utm ( vik_viewport_get_center ( vp ), &utm_middle );
236 /* scale the pixbuf if it doesn't match our dimensions */
237 if ( xmpp != vgl->mpp_easting || ympp != vgl->mpp_northing )
239 layer_width = round(vgl->width * vgl->mpp_easting / xmpp);
240 layer_height = round(vgl->height * vgl->mpp_northing / ympp);
242 /* rescale if necessary */
243 if (layer_width == vgl->scaled_width && layer_height == vgl->scaled_height && vgl->scaled != NULL)
244 pixbuf = vgl->scaled;
247 pixbuf = gdk_pixbuf_scale_simple(
254 if (vgl->scaled != NULL)
255 g_object_unref(vgl->scaled);
257 vgl->scaled = pixbuf;
258 vgl->scaled_width = layer_width;
259 vgl->scaled_height = layer_height;
263 guint width = vik_viewport_get_width(vp), height = vik_viewport_get_height(vp);
265 vgl->corner.zone = utm_middle.zone;
266 vgl->corner.letter = utm_middle.letter;
267 VikCoord corner_coord;
268 vik_coord_load_from_utm ( &corner_coord, vik_viewport_get_coord_mode(vp), &(vgl->corner) );
269 vik_viewport_coord_to_screen ( vp, &corner_coord, &x, &y );
270 if ( (x < 0 || x < width) && (y < 0 || y < height) && x+layer_width > 0 && y+layer_height > 0 )
271 vik_viewport_draw_pixbuf ( vp, pixbuf, 0, 0, x, y, layer_width, layer_height ); /* todo: draw only what we need to. */
275 static void georef_layer_free ( VikGeorefLayer *vgl )
277 if ( vgl->image != NULL )
278 g_free ( vgl->image );
279 if ( vgl->scaled != NULL )
280 g_object_unref ( vgl->scaled );
283 VikGeorefLayer *georef_layer_create ( VikViewport *vp )
285 return georef_layer_new ();
288 gboolean georef_layer_properties ( VikGeorefLayer *vgl, gpointer vp )
290 return georef_layer_dialog ( &vgl, vp, VIK_GTK_WINDOW_FROM_WIDGET(vp) );
293 static void georef_layer_load_image ( VikGeorefLayer *vgl )
296 if ( vgl->image == NULL )
300 g_object_unref ( G_OBJECT(vgl->pixbuf) );
303 g_object_unref ( G_OBJECT(vgl->scaled) );
307 vgl->pixbuf = gdk_pixbuf_new_from_file ( vgl->image, &gx );
311 g_warning ( _("Couldn't open image file: %s"), gx->message );
316 vgl->width = gdk_pixbuf_get_width ( vgl->pixbuf );
317 vgl->height = gdk_pixbuf_get_height ( vgl->pixbuf );
320 /* should find length and width here too */
323 static void georef_layer_set_image ( VikGeorefLayer *vgl, const gchar *image )
326 g_free ( vgl->image );
329 g_object_unref ( vgl->scaled );
334 vgl->image = g_strdup ( image );
337 static gboolean world_file_read_line ( gchar *buffer, gint size, FILE *f, GtkWidget *widget, gboolean use_value )
339 if (!fgets ( buffer, 1024, f ))
341 a_dialog_error_msg ( VIK_GTK_WINDOW_FROM_WIDGET(widget), _("Unexpected end of file reading World file.") );
349 gdouble val = g_strtod ( buffer, NULL );
350 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(widget), val > 0 ? val : -val );
355 static void georef_layer_dialog_load ( GtkWidget *pass_along[4] )
357 GtkWidget *file_selector = gtk_file_chooser_dialog_new (_("Choose World file"),
359 GTK_FILE_CHOOSER_ACTION_OPEN,
360 GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
361 GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
364 if ( gtk_dialog_run ( GTK_DIALOG ( file_selector ) ) == GTK_RESPONSE_ACCEPT )
366 FILE *f = g_fopen ( gtk_file_chooser_get_filename ( GTK_FILE_CHOOSER(file_selector) ), "r" );
367 gtk_widget_destroy ( file_selector );
370 a_dialog_error_msg ( VIK_GTK_WINDOW_FROM_WIDGET(pass_along[0]), _("The World file you requested could not be opened for reading.") );
375 gchar *buffer = g_malloc ( 1024 * sizeof(gchar) );
376 if ( world_file_read_line ( buffer, 1024, f, pass_along[0], TRUE ) && world_file_read_line ( buffer, 1024, f, pass_along[0], FALSE)
377 && world_file_read_line ( buffer, 1024, f, pass_along[0], FALSE ) && world_file_read_line ( buffer, 1024, f, pass_along[1], TRUE)
378 && world_file_read_line ( buffer, 1024, f, pass_along[2], TRUE ) && world_file_read_line ( buffer, 1024, f, pass_along[3], TRUE ) )
387 gtk_widget_destroy ( file_selector );
390 file selection dialog
391 file opener for reading, if NULL, send error_msg ( VIK_GTK_WINDOW_FROM_WIDGET(pass_along[0]) )
392 does that catch directories too?
393 read lines -- if not enough lines, give error.
394 if anything outside, give error. define range with #define CONSTANTS
395 put 'em in thar widgets, and that's it.
399 static void georef_layer_export_params ( gpointer *pass_along[2] )
401 VikGeorefLayer *vgl = VIK_GEOREF_LAYER(pass_along[0]);
402 GtkWidget *file_selector = gtk_file_chooser_dialog_new (_("Choose World file"),
404 GTK_FILE_CHOOSER_ACTION_SAVE,
405 GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
406 GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
408 if ( gtk_dialog_run ( GTK_DIALOG ( file_selector ) ) == GTK_RESPONSE_ACCEPT )
410 FILE *f = g_fopen ( gtk_file_chooser_get_filename ( GTK_FILE_CHOOSER(file_selector) ), "w" );
412 gtk_widget_destroy ( file_selector );
415 a_dialog_error_msg ( VIK_GTK_WINDOW_FROM_WIDGET(pass_along[0]), _("The file you requested could not be opened for writing.") );
420 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 );
426 gtk_widget_destroy ( file_selector );
429 /* returns TRUE if OK was pressed. */
430 static gboolean georef_layer_dialog ( VikGeorefLayer **vgl, gpointer vp, GtkWindow *w )
432 GtkWidget *dialog = gtk_dialog_new_with_buttons (_("Layer Properties"),
434 GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
440 /* Default to reject as user really needs to specify map file first */
441 gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_REJECT );
442 GtkWidget *response_w = NULL;
443 #if GTK_CHECK_VERSION (2, 20, 0)
444 response_w = gtk_dialog_get_widget_for_response ( GTK_DIALOG(dialog), GTK_RESPONSE_REJECT );
446 GtkWidget *table, *wfp_hbox, *wfp_label, *wfp_button, *ce_label, *ce_spin, *cn_label, *cn_spin, *xlabel, *xspin, *ylabel, *yspin, *imagelabel, *imageentry;
448 GtkWidget *pass_along[4];
450 table = gtk_table_new ( 6, 2, FALSE );
451 gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), table, TRUE, TRUE, 0 );
453 wfp_hbox = gtk_hbox_new ( FALSE, 0 );
454 wfp_label = gtk_label_new ( _("World File Parameters:") );
455 wfp_button = gtk_button_new_with_label ( _("Load From File...") );
457 gtk_box_pack_start ( GTK_BOX(wfp_hbox), wfp_label, TRUE, TRUE, 0 );
458 gtk_box_pack_start ( GTK_BOX(wfp_hbox), wfp_button, FALSE, FALSE, 3 );
460 ce_label = gtk_label_new ( _("Corner pixel easting:") );
461 ce_spin = gtk_spin_button_new ( (GtkAdjustment *) gtk_adjustment_new ( 4, 0.0, 1500000.0, 1, 5, 0 ), 1, 4 );
462 gtk_widget_set_tooltip_text ( GTK_WIDGET(ce_spin), _("the UTM \"easting\" value of the upper-right corner pixel of the map") );
464 cn_label = gtk_label_new ( _("Corner pixel northing:") );
465 cn_spin = gtk_spin_button_new ( (GtkAdjustment *) gtk_adjustment_new ( 4, 0.0, 9000000.0, 1, 5, 0 ), 1, 4 );
466 gtk_widget_set_tooltip_text ( GTK_WIDGET(cn_spin), _("the UTM \"northing\" value of the upper-right corner pixel of the map") );
468 xlabel = gtk_label_new ( _("X (easting) scale (mpp): "));
469 ylabel = gtk_label_new ( _("Y (northing) scale (mpp): "));
471 xspin = gtk_spin_button_new ( (GtkAdjustment *) gtk_adjustment_new ( 4, VIK_VIEWPORT_MIN_ZOOM, VIK_VIEWPORT_MAX_ZOOM, 1, 5, 0 ), 1, 8 );
472 gtk_widget_set_tooltip_text ( GTK_WIDGET(xspin), _("the scale of the map in the X direction (meters per pixel)") );
473 yspin = gtk_spin_button_new ( (GtkAdjustment *) gtk_adjustment_new ( 4, VIK_VIEWPORT_MIN_ZOOM, VIK_VIEWPORT_MAX_ZOOM, 1, 5, 0 ), 1, 8 );
474 gtk_widget_set_tooltip_text ( GTK_WIDGET(yspin), _("the scale of the map in the Y direction (meters per pixel)") );
476 imagelabel = gtk_label_new ( _("Map Image:") );
477 imageentry = vik_file_entry_new (GTK_FILE_CHOOSER_ACTION_OPEN);
481 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(ce_spin), (*vgl)->corner.easting );
482 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(cn_spin), (*vgl)->corner.northing );
483 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(xspin), (*vgl)->mpp_easting );
484 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(yspin), (*vgl)->mpp_northing );
486 vik_file_entry_set_filename ( VIK_FILE_ENTRY(imageentry), (*vgl)->image );
490 VikCoord corner_coord;
492 vik_viewport_screen_to_coord ( VIK_VIEWPORT(vp), 0, 0, &corner_coord );
493 vik_coord_to_utm ( &corner_coord, &utm );
494 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(ce_spin), utm.easting );
495 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(cn_spin), utm.northing );
496 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(xspin), vik_viewport_get_xmpp ( VIK_VIEWPORT(vp) ) );
497 gtk_spin_button_set_value ( GTK_SPIN_BUTTON(yspin), vik_viewport_get_ympp ( VIK_VIEWPORT(vp) ) );
500 gtk_table_attach_defaults ( GTK_TABLE(table), imagelabel, 0, 1, 0, 1 );
501 gtk_table_attach_defaults ( GTK_TABLE(table), imageentry, 1, 2, 0, 1 );
502 gtk_table_attach_defaults ( GTK_TABLE(table), wfp_hbox, 0, 2, 1, 2 );
503 gtk_table_attach_defaults ( GTK_TABLE(table), xlabel, 0, 1, 2, 3 );
504 gtk_table_attach_defaults ( GTK_TABLE(table), xspin, 1, 2, 2, 3 );
505 gtk_table_attach_defaults ( GTK_TABLE(table), ylabel, 0, 1, 3, 4 );
506 gtk_table_attach_defaults ( GTK_TABLE(table), yspin, 1, 2, 3, 4 );
507 gtk_table_attach_defaults ( GTK_TABLE(table), ce_label, 0, 1, 4, 5 );
508 gtk_table_attach_defaults ( GTK_TABLE(table), ce_spin, 1, 2, 4, 5 );
509 gtk_table_attach_defaults ( GTK_TABLE(table), cn_label, 0, 1, 5, 6 );
510 gtk_table_attach_defaults ( GTK_TABLE(table), cn_spin, 1, 2, 5, 6 );
512 pass_along[0] = xspin;
513 pass_along[1] = yspin;
514 pass_along[2] = ce_spin;
515 pass_along[3] = cn_spin;
516 g_signal_connect_swapped ( G_OBJECT(wfp_button), "clicked", G_CALLBACK(georef_layer_dialog_load), pass_along );
519 gtk_widget_grab_focus ( response_w );
521 gtk_widget_show_all ( table );
523 if ( gtk_dialog_run ( GTK_DIALOG(dialog) ) == GTK_RESPONSE_ACCEPT )
527 *vgl = georef_layer_new ();
528 vik_layer_rename ( VIK_LAYER(*vgl), vik_georef_layer_interface.name );
530 (*vgl)->corner.easting = gtk_spin_button_get_value ( GTK_SPIN_BUTTON(ce_spin) );
531 (*vgl)->corner.northing = gtk_spin_button_get_value ( GTK_SPIN_BUTTON(cn_spin) );
532 (*vgl)->mpp_easting = gtk_spin_button_get_value ( GTK_SPIN_BUTTON(xspin) );
533 (*vgl)->mpp_northing = gtk_spin_button_get_value ( GTK_SPIN_BUTTON(yspin) );
534 if ( (!(*vgl)->image) || strcmp( (*vgl)->image, vik_file_entry_get_filename(VIK_FILE_ENTRY(imageentry)) ) != 0 )
536 georef_layer_set_image ( *vgl, vik_file_entry_get_filename(VIK_FILE_ENTRY(imageentry)) );
537 georef_layer_load_image ( *vgl );
540 gtk_widget_destroy ( GTK_WIDGET(dialog) );
543 gtk_widget_destroy ( GTK_WIDGET(dialog) );
547 static void georef_layer_zoom_to_fit ( gpointer vgl_vlp[2] )
549 vik_viewport_set_xmpp ( vik_layers_panel_get_viewport(VIK_LAYERS_PANEL(vgl_vlp[1])), VIK_GEOREF_LAYER(vgl_vlp[0])->mpp_easting );
550 vik_viewport_set_ympp ( vik_layers_panel_get_viewport(VIK_LAYERS_PANEL(vgl_vlp[1])), VIK_GEOREF_LAYER(vgl_vlp[0])->mpp_northing );
551 vik_layers_panel_emit_update ( VIK_LAYERS_PANEL(vgl_vlp[1]) );
554 static void georef_layer_goto_center ( gpointer vgl_vlp[2] )
556 VikGeorefLayer *vgl = VIK_GEOREF_LAYER ( vgl_vlp[0] );
557 VikViewport *vp = vik_layers_panel_get_viewport(VIK_LAYERS_PANEL(vgl_vlp[1]));
561 vik_coord_to_utm ( vik_viewport_get_center ( vp ), &utm );
563 utm.easting = vgl->corner.easting + (vgl->width * vgl->mpp_easting / 2); /* only an approximation */
564 utm.northing = vgl->corner.northing - (vgl->height * vgl->mpp_northing / 2);
566 vik_coord_load_from_utm ( &coord, vik_viewport_get_coord_mode ( vp ), &utm );
567 vik_viewport_set_center_coord ( vp, &coord );
569 vik_layers_panel_emit_update ( VIK_LAYERS_PANEL(vgl_vlp[1]) );
572 static void georef_layer_add_menu_items ( VikGeorefLayer *vgl, GtkMenu *menu, gpointer vlp )
574 static gpointer pass_along[2];
579 item = gtk_menu_item_new();
580 gtk_menu_shell_append ( GTK_MENU_SHELL(menu), item );
581 gtk_widget_show ( item );
583 item = gtk_menu_item_new_with_mnemonic ( _("_Zoom to Fit Map") );
584 g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(georef_layer_zoom_to_fit), pass_along );
585 gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
586 gtk_widget_show ( item );
588 item = gtk_menu_item_new_with_mnemonic ( _("_Goto Map Center") );
589 g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(georef_layer_goto_center), pass_along );
590 gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
591 gtk_widget_show ( item );
593 item = gtk_menu_item_new_with_mnemonic ( _("_Export to World File") );
594 g_signal_connect_swapped ( G_OBJECT(item), "activate", G_CALLBACK(georef_layer_export_params), pass_along );
595 gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
596 gtk_widget_show ( item );
600 static gpointer georef_layer_move_create ( VikWindow *vw, VikViewport *vvp)
605 static gboolean georef_layer_move_release ( VikGeorefLayer *vgl, GdkEventButton *event, VikViewport *vvp )
607 if (!vgl || vgl->vl.type != VIK_LAYER_GEOREF)
610 if ( vgl->click_x != -1 )
612 vgl->corner.easting += (event->x - vgl->click_x) * vik_viewport_get_xmpp (vvp);
613 vgl->corner.northing -= (event->y - vgl->click_y) * vik_viewport_get_ympp (vvp);
614 vik_layer_emit_update ( VIK_LAYER(vgl) );
617 return FALSE; /* I didn't move anything on this layer! */
620 static gpointer georef_layer_zoom_create ( VikWindow *vw, VikViewport *vvp)
625 static gboolean georef_layer_zoom_press ( VikGeorefLayer *vgl, GdkEventButton *event, VikViewport *vvp )
627 if (!vgl || vgl->vl.type != VIK_LAYER_GEOREF)
629 if ( event->button == 1 )
631 if ( vgl->mpp_easting < (VIK_VIEWPORT_MAX_ZOOM / 1.05) && vgl->mpp_northing < (VIK_VIEWPORT_MAX_ZOOM / 1.05) )
633 vgl->mpp_easting *= 1.01;
634 vgl->mpp_northing *= 1.01;
639 if ( vgl->mpp_easting > (VIK_VIEWPORT_MIN_ZOOM * 1.05) && vgl->mpp_northing > (VIK_VIEWPORT_MIN_ZOOM * 1.05) )
641 vgl->mpp_easting /= 1.01;
642 vgl->mpp_northing /= 1.01;
645 vik_viewport_set_xmpp ( vvp, vgl->mpp_easting );
646 vik_viewport_set_ympp ( vvp, vgl->mpp_northing );
647 vik_layer_emit_update ( VIK_LAYER(vgl) );
651 static gboolean georef_layer_move_press ( VikGeorefLayer *vgl, GdkEventButton *event, VikViewport *vvp )
653 if (!vgl || vgl->vl.type != VIK_LAYER_GEOREF)
655 vgl->click_x = event->x;
656 vgl->click_y = event->y;