From: Kaj-Michael Lang <milang@tal.org>
Date: Tue, 5 Aug 2008 13:14:25 +0000 (+0300)
Subject: MapWidget: Do a full buffer redraw if view is rotated or if we can't use any of the... 
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=362caa84a050d202b69763e74a3a51f1a63f93a4;p=mapper

MapWidget: Do a full buffer redraw if view is rotated or if we can't use any of the old buffer
---

diff --git a/libs/libgtkmap/gtkmap.c b/libs/libgtkmap/gtkmap.c
index 1ed9887..f135fce 100644
--- a/libs/libgtkmap/gtkmap.c
+++ b/libs/libgtkmap/gtkmap.c
@@ -1,6 +1,6 @@
 /*
  * MapWidget: Display a map
- * Copyright (C) 2007 Kaj-Michael Lang
+ * Copyright (C) 2007-2008 Kaj-Michael Lang
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ -28,7 +28,6 @@
  *
  */
 
-
 #include "config.h"
 
 #include <stdlib.h>
@@ -979,8 +978,10 @@ if (!priv->buffer) {
 }
 
 /* XXX: WTF, scale is not drawn properly with cairo without this thing slowing us down ????*/
+#if 1
 g_debug("HUH");g_debug("HUH");g_debug("HUH");g_debug("HUH");g_debug("HUH");g_debug("HUH");g_debug("HUH");g_debug("HUH");
 g_debug("HUH");g_debug("HUH");g_debug("HUH");g_debug("HUH");g_debug("HUH");g_debug("HUH");g_debug("HUH");g_debug("HUH");
+#endif
 
 #ifdef WITH_CAIRO
 cairo_save(priv->ct);
@@ -1831,9 +1832,8 @@ g_debug("LOAD: %u, %u @ (%d+%d): %s", tilex, tiley, priv->zoom, zoff, buffer);
 
 pixbuf=image_cache_get(priv->icache, key, buffer);
 if (!pixbuf) {
-#if 0
 	g_unlink(buffer);
-
+#if 0
 	if (_auto_download && _curr_repo->type != REPOTYPE_NONE && !((_zoom + zoff - (_curr_repo->double_size ? 1 : 0)) % _curr_repo->dl_zoom_steps)) {
 		if (download)
 			map_initiate_download(tilex >> zoff, tiley >> zoff, _zoom + zoff, -INITIAL_DOWNLOAD_RETRIES);
@@ -1895,6 +1895,22 @@ priv->curr_repo=rd;
 gtk_map_refresh(widget);
 }
 
+
+/**
+ * gtk_map_render_tile:
+ * @widget
+ * @tilex
+ * @tiley
+ * @destx
+ * @desty
+ * @fast_fail
+ *
+ * Renders given tile x,y on buffer pixmap at dest x,y. If an exact tile is not found then it tries to load a
+ * tile for a another zoom level and scale it to match.
+ * If no suitable tile is found, a black box will be drawn on the buffer at dest x,y instead.
+ *
+ * Returns: TRUE if a tile is found. FALSE on error. 
+ */
 static gboolean
 gtk_map_render_tile(GtkWidget *widget, guint tilex, guint tiley, guint destx, guint desty, gboolean fast_fail)
 {
@@ -1936,21 +1952,15 @@ for (zoff = (priv->curr_repo->double_size ? 1 : 0); !pixbuf && (priv->zoom + zof
 }
 
 if (pixbuf) {
-	gdk_draw_pixbuf(priv->buffer, 
-	    widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
-		pixbuf, 0, 0, destx, desty, 
-		GTK_MAP_TILE_SIZE_PIXELS, 
-		GTK_MAP_TILE_SIZE_PIXELS, 
+	gdk_draw_pixbuf(priv->buffer, widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
+		pixbuf, 0, 0, destx, desty, GTK_MAP_TILE_SIZE_PIXELS, GTK_MAP_TILE_SIZE_PIXELS, 
 		GDK_RGB_DITHER_NONE, 0, 0);
 	g_object_unref(pixbuf);
 	return TRUE;
 }
-gdk_draw_rectangle(priv->buffer, 
-	widget->style->black_gc, TRUE, 
-	destx, desty, 
-	GTK_MAP_TILE_SIZE_PIXELS, 
-	GTK_MAP_TILE_SIZE_PIXELS);
-return TRUE;
+
+gdk_draw_rectangle(priv->buffer, widget->style->black_gc, TRUE, destx, desty, GTK_MAP_TILE_SIZE_PIXELS, GTK_MAP_TILE_SIZE_PIXELS);
+return FALSE;
 }
 
 /******************************************************************************/
@@ -2034,19 +2044,18 @@ map=GTK_MAP(widget);
 priv=GTK_MAP_GET_PRIVATE(map);
 style=widget->style;
 
-/* Assure that _center.unitx/y are bounded. */
+/* Assure that the given unitx/y are inside our world. */
 BOUND(unitx, priv->min_center.unitx, priv->max_center.unitx);
 BOUND(unity, priv->min_center.unity, priv->max_center.unity);
 
-priv->center.unitx = unitx;
-priv->center.unity = unity;
+priv->center.unitx=unitx;
+priv->center.unity=unity;
 
-new_base_tilex = grid2tile((gint) pixel2grid((gint)unit2pixel((gint) priv->center.unitx)) - (gint)priv->screen_grids_halfwidth);
-new_base_tiley = grid2tile(pixel2grid(unit2pixel(priv->center.unity)) - priv->screen_grids_halfheight);
+new_base_tilex=grid2tile((gint) pixel2grid((gint)unit2pixel((gint) priv->center.unitx)) - (gint)priv->screen_grids_halfwidth);
+new_base_tiley=grid2tile(pixel2grid(unit2pixel(priv->center.unity)) - priv->screen_grids_halfheight);
 
 /* Same zoom level, so it's likely that we can reuse some of the old buffer's pixels. */
-
-if (new_base_tilex != priv->base_tilex || new_base_tiley != priv->base_tiley) {
+if ((new_base_tilex != priv->base_tilex || new_base_tiley != priv->base_tiley) && priv->rotate_view==FALSE) {
 	/* If copying from old parts to new parts, we need to make sure we
 	 * don't overwrite the old parts when copying, so set up new_x,
 	 * new_y, old_x, old_y, iox, and ioy with that in mind. */
@@ -2102,11 +2111,17 @@ if (new_base_tilex != priv->base_tilex || new_base_tiley != priv->base_tiley) {
 			}
 		}
 	}
+	gtk_map_recalc_offset(priv);
+	gtk_map_recalc_focus_base(priv);
+	gtk_widget_queue_draw(widget);
+} else {
+	priv->base_tilex=new_base_tilex;
+	priv->base_tiley=new_base_tiley;
+	gtk_map_recalc_offset(priv);
+	gtk_map_recalc_focus_base(priv);
+	gtk_map_refresh(widget);
 }
 
-gtk_map_recalc_offset(priv);
-gtk_map_recalc_focus_base(priv);
-gtk_map_refresh(widget);
 g_signal_emit(widget, gtk_map_signals[MAP_LOCATION_CHANGED], 0, priv->zoom);
 }
 
@@ -2225,6 +2240,7 @@ return FALSE;
 
 /**
  * gtk_map_refresh:
+ * @widget
  *
  * Force a redraw of the map view.
  */