Fix: Correctly rotate thumbnail images

[andy/viking.git] / src / vikviewport.c

diff --git a/src/vikviewport.c b/src/vikviewport.c
index 8ab0ff6f4e1854e7a59e7c75fbcf426b62190c37..6502881953777eba290bfdbf2d226f5a7836a95e 100644 (file)
--- a/src/vikviewport.c
+++ b/src/vikviewport.c
@@ -23,12 +23,16 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  *
  */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 
 #define DEFAULT_BACKGROUND_COLOR "#CCCCCC"
 
 #include <gtk/gtk.h>
+#ifdef HAVE_MATH_H
 #include <math.h>
-#include <stdio.h>
+#endif
 
 #include "coords.h"
 #include "vikcoord.h"
@@ -39,8 +43,6 @@
 
 /* for ALTI_TO_MPP */
 #include "globals.h"
-#include "googlemaps.h"
-#include "khmaps.h"
 
 static gdouble EASTING_OFFSET = 500000.0;
 
@@ -58,8 +60,6 @@ static void viewport_init_ra();
 
 static GObjectClass *parent_class;
 
-static void viewport_google_rezoom ( VikViewport *vvp );
-
 
 struct _VikViewport {
   GtkDrawingArea drawing_area;
@@ -90,6 +90,11 @@ 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
@@ -162,8 +167,9 @@ static void viewport_init ( VikViewport *vvp )
   vvp->ympp = 4.0;
   vvp->coord_mode = VIK_COORD_LATLON;
   vvp->drawmode = VIK_VIEWPORT_DRAWMODE_MERCATOR;
-  vvp->center.north_south = 0;
-  vvp->center.east_west = -166021;
+  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;
@@ -174,7 +180,14 @@ 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 )
@@ -236,6 +249,11 @@ 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 );
 }
 
 
@@ -256,6 +274,13 @@ 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 )
   {
@@ -278,6 +303,9 @@ 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 ) );
 
@@ -385,6 +413,8 @@ void vik_viewport_draw_scale ( VikViewport *vvp )
     pango_layout_set_text(pl, s, -1);
     vik_viewport_draw_layout(vvp, GTK_WIDGET(&vvp->drawing_area)->style->black_gc,
                           PAD + len + PAD, vvp->height - PAD - 10, pl);
+    g_object_unref(pl);
+    pl = NULL;
   }
 }
 
@@ -461,8 +491,6 @@ void vik_viewport_set_zoom ( VikViewport *vvp, gdouble xympp )
 
   if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_UTM )
     viewport_utm_zone_check(vvp);
-  else if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_GOOGLE )
-    viewport_google_rezoom ( vvp );
 }
 
 /* or could do factor */
@@ -474,9 +502,6 @@ void vik_viewport_zoom_in ( VikViewport *vvp )
     vvp->xmpp /= 2;
     vvp->ympp /= 2;
 
-    if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_GOOGLE )
-      viewport_google_rezoom ( vvp );
-
     viewport_utm_zone_check(vvp);
   }
 }
@@ -489,9 +514,6 @@ void vik_viewport_zoom_out ( VikViewport *vvp )
     vvp->xmpp *= 2;
     vvp->ympp *= 2;
 
-    if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_GOOGLE )
-      viewport_google_rezoom ( vvp );
-
     viewport_utm_zone_check(vvp);
   }
 }
@@ -519,8 +541,6 @@ void vik_viewport_set_xmpp ( VikViewport *vvp, gdouble xmpp )
     vvp->xmpp = xmpp;
     if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_UTM )
       viewport_utm_zone_check(vvp);
-    if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_GOOGLE )
-      viewport_google_rezoom ( vvp );
   }
 }
 
@@ -530,8 +550,6 @@ void vik_viewport_set_ympp ( VikViewport *vvp, gdouble ympp )
     vvp->ympp = ympp;
     if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_UTM )
       viewport_utm_zone_check(vvp);
-    if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_GOOGLE )
-      viewport_google_rezoom ( vvp );
   }
 }
 
@@ -675,14 +693,7 @@ void vik_viewport_screen_to_coord ( VikViewport *vvp, int x, int y, VikCoord *co
     coord->mode = VIK_COORD_LATLON;
     if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_EXPEDIA )
       calcxy_rev(&(coord->east_west), &(coord->north_south), x, y, vvp->center.east_west, vvp->center.north_south, vvp->xmpp * ALTI_TO_MPP, vvp->ympp * ALTI_TO_MPP, vvp->width/2, vvp->height/2);
-    else if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_GOOGLE ) {
-      /* google */
-      coord->east_west = (x - (vvp->width/2)) * vvp->google_calcx_rev_fact + vvp->center.east_west;
-      coord->north_south = ((vvp->height/2) - y) * vvp->google_calcy_rev_fact + vvp->center.north_south;
-    } else if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_KH ) {
-      coord->east_west = vvp->center.east_west + (180.0 * vvp->xmpp / 65536 / 256 * (x - vvp->width/2));
-      coord->north_south = vvp->center.north_south + (180.0 * vvp->ympp / 65536 / 256 * (vvp->height/2 - y));
-    } else if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_MERCATOR ) {
+    else if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_MERCATOR ) {
       /* FIXMERCATOR */
       coord->east_west = vvp->center.east_west + (180.0 * vvp->xmpp / 65536 / 256 * (x - vvp->width/2));
       coord->north_south = DEMERCLAT ( MERCLAT(vvp->center.north_south) + (180.0 * vvp->ympp / 65536 / 256 * (vvp->height/2 - y)) );
@@ -729,14 +740,6 @@ void vik_viewport_coord_to_screen ( VikViewport *vvp, const VikCoord *coord, int
     if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_EXPEDIA ) {
       calcxy ( &xx, &yy, center->lon, center->lat, ll->lon, ll->lat, vvp->xmpp * ALTI_TO_MPP, vvp->ympp * ALTI_TO_MPP, vvp->width / 2, vvp->height / 2 );
       *x = xx; *y = yy;
-    } else if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_GOOGLE ) {
-      /* google */
-      *x = vvp->google_calcx_fact * (ll->lon - center->lon) + (vvp->width/2);
-      *y = vvp->google_calcy_fact * (center->lat - ll->lat) + (vvp->height/2);
-    } else if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_KH ) {
-      /* subtract, convert to KH coords; blow it up by 256 */
-      *x = vvp->width/2 + (65536.0 / 180 / vvp->xmpp * (ll->lon - center->lon))*256.0;
-      *y = vvp->height/2 + (65536.0 / 180 / vvp->ympp * (center->lat - ll->lat))*256.0;
     } else if ( vvp->drawmode == VIK_VIEWPORT_DRAWMODE_MERCATOR ) {
       /* FIXMERCATOR: Optimize */
       *x = vvp->width/2 + (65536.0 / 180 / vvp->xmpp * (ll->lon - center->lon))*256.0;
@@ -990,8 +993,6 @@ void vik_viewport_set_drawmode ( VikViewport *vvp, VikViewportDrawMode drawmode
     viewport_set_coord_mode ( vvp, VIK_COORD_UTM );
   else {
     viewport_set_coord_mode ( vvp, VIK_COORD_LATLON );
-    if ( drawmode == VIK_VIEWPORT_DRAWMODE_GOOGLE )
-      viewport_google_rezoom ( vvp );
   }
 }
 
@@ -1000,17 +1001,40 @@ VikViewportDrawMode vik_viewport_get_drawmode ( VikViewport *vvp )
   return vvp->drawmode;
 }
 
-static void viewport_google_rezoom ( VikViewport *vvp )
+/******** triggering *******/
+void vik_viewport_set_trigger ( VikViewport *vp, gpointer trigger )
+{
+  vp->trigger = trigger;
+}
+
+gpointer vik_viewport_get_trigger ( VikViewport *vp )
 {
-  vvp->google_calcx_fact = (GOOGLEMAPS_ZOOM_ONE_MPP * 65536.0 * 0.7716245833877 / vvp->xmpp);
-  vvp->google_calcy_fact = (GOOGLEMAPS_ZOOM_ONE_MPP * 65536.0 / vvp->ympp);
-  vvp->google_calcx_rev_fact = 1 / vvp->google_calcx_fact;
-  vvp->google_calcy_rev_fact = 1 / vvp->google_calcy_fact;
+  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 );
+}
 
-const gchar *vik_viewport_get_drawmode_name(VikViewport *vv, VikViewportDrawMode mode)
+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;
@@ -1026,4 +1050,22 @@ const gchar *vik_viewport_get_drawmode_name(VikViewport *vv, VikViewportDrawMode
 
 }
 
+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);
+}