X-Git-Url: https://git.street.me.uk/andy/viking.git/blobdiff_plain/c933487f83cac2eddfcf14fed44cc8524b9b387e..de2fc9aa9e8db8e0258c8328161c6b5eda176a0a:/src/vikviewport.c

diff --git a/src/vikviewport.c b/src/vikviewport.c
index fe2815cb..fd2ea74b 100644
--- a/src/vikviewport.c
+++ b/src/vikviewport.c
@@ -28,10 +28,10 @@
 
 #include <gtk/gtk.h>
 #include <math.h>
-#include <stdio.h>
 
 #include "coords.h"
 #include "vikcoord.h"
+#include "vikwindow.h"
 #include "vikviewport.h"
 
 #include "mapcoord.h"
@@ -89,6 +89,11 @@ struct _VikViewport {
   gdouble google_calcy_fact;
   gdouble google_calcx_rev_fact;
   gdouble google_calcy_rev_fact;
+
+  /* trigger stuff */
+  gpointer trigger;
+  GdkPixmap *snapshot_buffer;
+  gboolean half_drawn;
 };
 
 static gdouble
@@ -148,7 +153,8 @@ static void viewport_class_init ( VikViewportClass *klass )
 
 VikViewport *vik_viewport_new ()
 {
-  return VIK_VIEWPORT ( g_object_new ( VIK_VIEWPORT_TYPE, NULL ) );
+  VikViewport *vv = VIK_VIEWPORT ( g_object_new ( VIK_VIEWPORT_TYPE, NULL ) );
+  return vv;
 }
 
 static void viewport_init ( VikViewport *vvp )
@@ -158,10 +164,11 @@ static void viewport_init ( VikViewport *vvp )
   /* TODO: not static */
   vvp->xmpp = 4.0;
   vvp->ympp = 4.0;
-  vvp->coord_mode = VIK_COORD_UTM;
-  vvp->drawmode = VIK_VIEWPORT_DRAWMODE_UTM;
-  vvp->center.north_south = 0;
-  vvp->center.east_west = -166021;
+  vvp->coord_mode = VIK_COORD_LATLON;
+  vvp->drawmode = VIK_VIEWPORT_DRAWMODE_MERCATOR;
+  vvp->center.mode = VIK_COORD_LATLON;
+  vvp->center.north_south = 40.714490;
+  vvp->center.east_west = -74.007130;
   vvp->center.utm_zone = 31;
   vvp->center.utm_letter = 'N';
   vvp->scr_buffer = NULL;
@@ -172,7 +179,14 @@ static void viewport_init ( VikViewport *vvp )
   vvp->scale_bg_gc = NULL;
   vvp->draw_scale = TRUE;
   vvp->draw_centermark = TRUE;
+
+  vvp->trigger = NULL;
+  vvp->snapshot_buffer = NULL;
+  vvp->half_drawn = FALSE;
+
   g_signal_connect (G_OBJECT(vvp), "configure_event", G_CALLBACK(vik_viewport_configure), NULL);
+
+  GTK_WIDGET_SET_FLAGS(vvp, GTK_CAN_FOCUS); /* allow VVP to have focus -- enabling key events, etc */
 }
 
 GdkColor *vik_viewport_get_background_gdkcolor ( VikViewport *vvp )
@@ -234,6 +248,11 @@ void vik_viewport_configure_manually ( VikViewport *vvp, gint width, guint heigh
   if ( vvp->scr_buffer )
     g_object_unref ( G_OBJECT ( vvp->scr_buffer ) );
   vvp->scr_buffer = gdk_pixmap_new ( GTK_WIDGET(vvp)->window, vvp->width, vvp->height, -1 );
+
+  /* TODO trigger: only if this is enabled !!! */
+  if ( vvp->snapshot_buffer )
+    g_object_unref ( G_OBJECT ( vvp->snapshot_buffer ) );
+  vvp->snapshot_buffer = gdk_pixmap_new ( GTK_WIDGET(vvp)->window, vvp->width, vvp->height, -1 );
 }
 
 
@@ -254,6 +273,13 @@ gboolean vik_viewport_configure ( VikViewport *vvp )
 
   vvp->scr_buffer = gdk_pixmap_new ( GTK_WIDGET(vvp)->window, vvp->width, vvp->height, -1 );
 
+  /* TODO trigger: only if enabled! */
+  if ( vvp->snapshot_buffer )
+    g_object_unref ( G_OBJECT ( vvp->snapshot_buffer ) );
+
+  vvp->snapshot_buffer = gdk_pixmap_new ( GTK_WIDGET(vvp)->window, vvp->width, vvp->height, -1 );
+  /* TODO trigger */
+
   /* this is down here so it can get a GC (necessary?) */
   if ( ! vvp->background_gc )
   {
@@ -276,6 +302,9 @@ static void viewport_finalize ( GObject *gob )
   if ( vvp->scr_buffer )
     g_object_unref ( G_OBJECT ( vvp->scr_buffer ) );
 
+  if ( vvp->snapshot_buffer )
+    g_object_unref ( G_OBJECT ( vvp->snapshot_buffer ) );
+
   if ( vvp->alpha_pixbuf )
     g_object_unref ( G_OBJECT ( vvp->alpha_pixbuf ) );
 
@@ -401,17 +430,22 @@ void vik_viewport_draw_centermark ( VikViewport *vvp )
   if ( !vvp->draw_centermark )
     return;
 
-  int len = 50;
+  const int len = 30;
+  const int gap = 4;
   int center_x = vvp->width/2;
   int center_y = vvp->height/2;
   GdkGC * black_gc = GTK_WIDGET(&vvp->drawing_area)->style->black_gc;
 
   /* white back ground */
-  vik_viewport_draw_line(vvp, vvp->scale_bg_gc, center_x - len, center_y, center_x + len, center_y);
-  vik_viewport_draw_line(vvp, vvp->scale_bg_gc, center_x, center_y - len, center_x, center_y + len);
+  vik_viewport_draw_line(vvp, vvp->scale_bg_gc, center_x - len, center_y, center_x - gap, center_y);
+  vik_viewport_draw_line(vvp, vvp->scale_bg_gc, center_x + gap, center_y, center_x + len, center_y);
+  vik_viewport_draw_line(vvp, vvp->scale_bg_gc, center_x, center_y - len, center_x, center_y - gap);
+  vik_viewport_draw_line(vvp, vvp->scale_bg_gc, center_x, center_y + gap, center_x, center_y + len);
   /* black fore ground */
-  vik_viewport_draw_line(vvp, black_gc, center_x - len, center_y, center_x + len, center_y);
-  vik_viewport_draw_line(vvp, black_gc, center_x, center_y - len, center_x, center_y + len);
+  vik_viewport_draw_line(vvp, black_gc, center_x - len, center_y, center_x - gap, center_y);
+  vik_viewport_draw_line(vvp, black_gc, center_x + gap, center_y, center_x + len, center_y);
+  vik_viewport_draw_line(vvp, black_gc, center_x, center_y - len, center_x, center_y - gap);
+  vik_viewport_draw_line(vvp, black_gc, center_x, center_y + gap, center_x, center_y + len);
   
 }
 
@@ -1000,3 +1034,72 @@ static void viewport_google_rezoom ( VikViewport *vvp )
   vvp->google_calcx_rev_fact = 1 / vvp->google_calcx_fact;
   vvp->google_calcy_rev_fact = 1 / vvp->google_calcy_fact;
 }
+
+/******** triggering *******/
+void vik_viewport_set_trigger ( VikViewport *vp, gpointer trigger )
+{
+  vp->trigger = trigger;
+}
+
+gpointer vik_viewport_get_trigger ( VikViewport *vp )
+{
+  return vp->trigger;
+}
+
+void vik_viewport_snapshot_save ( VikViewport *vp )
+{
+  gdk_draw_drawable ( vp->snapshot_buffer, vp->background_gc, vp->scr_buffer, 0, 0, 0, 0, -1, -1 );
+}
+
+void vik_viewport_snapshot_load ( VikViewport *vp )
+{
+  gdk_draw_drawable ( vp->scr_buffer, vp->background_gc, vp->snapshot_buffer, 0, 0, 0, 0, -1, -1 );
+}
+
+void vik_viewport_set_half_drawn(VikViewport *vp, gboolean half_drawn)
+{
+  vp->half_drawn = half_drawn;
+}
+
+gboolean vik_viewport_get_half_drawn( VikViewport *vp )
+{
+  return vp->half_drawn;
+}
+
+
+const gchar *vik_viewport_get_drawmode_name(VikViewport *vv, VikViewportDrawMode mode)
+ {
+  const gchar *name = NULL;
+  VikWindow *vw = NULL;
+  GtkWidget *mode_button;
+  GtkWidget *label;
+  
+  vw = VIK_WINDOW_FROM_WIDGET(vv);
+  mode_button = vik_window_get_drawmode_button(vw, mode);
+  label = gtk_bin_get_child(GTK_BIN(mode_button));
+
+  name = gtk_label_get_text ( GTK_LABEL(label) );
+
+  return name;
+
+}
+
+void vik_viewport_get_min_max_lat_lon ( VikViewport *vp, gdouble *min_lat, gdouble *max_lat, gdouble *min_lon, gdouble *max_lon )
+{
+  VikCoord tleft, tright, bleft, bright;
+
+  vik_viewport_screen_to_coord ( vp, 0, 0, &tleft );
+  vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), 0, &tright );
+  vik_viewport_screen_to_coord ( vp, 0, vik_viewport_get_height(vp), &bleft );
+  vik_viewport_screen_to_coord ( vp, vp->width, vp->height, &bright );
+
+  vik_coord_convert(&tleft, VIK_COORD_LATLON);
+  vik_coord_convert(&tright, VIK_COORD_LATLON);
+  vik_coord_convert(&bleft, VIK_COORD_LATLON);
+  vik_coord_convert(&bright, VIK_COORD_LATLON);
+
+  *max_lat = MAX(tleft.north_south, tright.north_south);
+  *min_lat = MIN(bleft.north_south, bright.north_south);
+  *max_lon = MAX(tright.east_west, bright.east_west);
+  *min_lon = MIN(tleft.east_west, bleft.east_west);
+}