#define VIK_SETTINGS_MAP_REAL_MIN_SHRINKFACTOR "maps_real_min_shrinkfactor"
static gdouble REAL_MIN_SHRINKFACTOR = 0.0039062499; /* if shrinkfactor is between MAX and REAL_MAX, will only check for existence */
+#define VIK_SETTINGS_MAP_SCALE_INC_UP "maps_scale_inc_up"
+static guint SCALE_INC_UP = 2;
+#define VIK_SETTINGS_MAP_SCALE_INC_DOWN "maps_scale_inc_down"
+static guint SCALE_INC_DOWN = 4;
+#define VIK_SETTINGS_MAP_SCALE_SMALLER_ZOOM_FIRST "maps_scale_smaller_zoom_first"
+static gboolean SCALE_SMALLER_ZOOM_FIRST = TRUE;
+
/****** MAP TYPES ******/
static GList *__map_types = NULL;
if ( a_settings_get_double ( VIK_SETTINGS_MAP_REAL_MIN_SHRINKFACTOR, &gdtmp ) )
REAL_MIN_SHRINKFACTOR = gdtmp;
+
+ gint gitmp = 0;
+ if ( a_settings_get_integer ( VIK_SETTINGS_MAP_SCALE_INC_UP, &gitmp ) )
+ SCALE_INC_UP = gitmp;
+
+ if ( a_settings_get_integer ( VIK_SETTINGS_MAP_SCALE_INC_DOWN, &gitmp ) )
+ SCALE_INC_DOWN = gitmp;
+
+ gboolean gbtmp = TRUE;
+ if ( a_settings_get_boolean ( VIK_SETTINGS_MAP_SCALE_SMALLER_ZOOM_FIRST, &gbtmp ) )
+ SCALE_SMALLER_ZOOM_FIRST = gbtmp;
+
}
/****************************************/
return TRUE;
}
+/**
+ *
+ */
+gboolean try_draw_scale_down (VikMapsLayer *vml, VikViewport *vvp, MapCoord ulm, gint xx, gint yy, gint tilesize_x_ceil, gint tilesize_y_ceil,
+ gdouble xshrinkfactor, gdouble yshrinkfactor, guint id, const gchar *mapname, gchar *path_buf, guint max_path_len)
+{
+ GdkPixbuf *pixbuf;
+ int scale_inc;
+ for (scale_inc = 1; scale_inc < SCALE_INC_DOWN; scale_inc ++) {
+ // Try with smaller zooms
+ int scale_factor = 1 << scale_inc; /* 2^scale_inc */
+ MapCoord ulm2 = ulm;
+ ulm2.x = ulm.x / scale_factor;
+ ulm2.y = ulm.y / scale_factor;
+ ulm2.scale = ulm.scale + scale_inc;
+ pixbuf = get_pixbuf ( vml, id, mapname, &ulm2, path_buf, max_path_len, xshrinkfactor * scale_factor, yshrinkfactor * scale_factor );
+ if ( pixbuf ) {
+ gint src_x = (ulm.x % scale_factor) * tilesize_x_ceil;
+ gint src_y = (ulm.y % scale_factor) * tilesize_y_ceil;
+ vik_viewport_draw_pixbuf ( vvp, pixbuf, src_x, src_y, xx, yy, tilesize_x_ceil, tilesize_y_ceil );
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
+/**
+ *
+ */
+gboolean try_draw_scale_up (VikMapsLayer *vml, VikViewport *vvp, MapCoord ulm, gint xx, gint yy, gint tilesize_x_ceil, gint tilesize_y_ceil,
+ gdouble xshrinkfactor, gdouble yshrinkfactor, guint id, const gchar *mapname, gchar *path_buf, guint max_path_len)
+{
+ GdkPixbuf *pixbuf;
+ // Try with bigger zooms
+ int scale_dec;
+ for (scale_dec = 1; scale_dec < SCALE_INC_UP; scale_dec ++) {
+ int pict_x, pict_y;
+ int scale_factor = 1 << scale_dec; /* 2^scale_dec */
+ MapCoord ulm2 = ulm;
+ ulm2.x = ulm.x * scale_factor;
+ ulm2.y = ulm.y * scale_factor;
+ ulm2.scale = ulm.scale - scale_dec;
+ for (pict_x = 0; pict_x < scale_factor; pict_x ++) {
+ for (pict_y = 0; pict_y < scale_factor; pict_y ++) {
+ MapCoord ulm3 = ulm2;
+ ulm3.x += pict_x;
+ ulm3.y += pict_y;
+ pixbuf = get_pixbuf ( vml, id, mapname, &ulm3, path_buf, max_path_len, xshrinkfactor / scale_factor, yshrinkfactor / scale_factor );
+ if ( pixbuf ) {
+ gint src_x = 0;
+ gint src_y = 0;
+ gint dest_x = xx + pict_x * (tilesize_x_ceil / scale_factor);
+ gint dest_y = yy + pict_y * (tilesize_y_ceil / scale_factor);
+ vik_viewport_draw_pixbuf ( vvp, pixbuf, src_x, src_y, dest_x, dest_y, tilesize_x_ceil / scale_factor, tilesize_y_ceil / scale_factor );
+ return TRUE;
+ }
+ }
+ }
+ }
+ return FALSE;
+}
+
static void maps_layer_draw_section ( VikMapsLayer *vml, VikViewport *vvp, VikCoord *ul, VikCoord *br )
{
MapCoord ulm, brm;
vik_viewport_draw_line ( vvp, black_gc, xx+tilesize_x_ceil, yy, xx, yy+tilesize_y_ceil );
}
} else {
- int scale_inc;
- for (scale_inc = 0; scale_inc < 4; scale_inc ++) {
- /* try with correct then smaller zooms */
- int scale_factor = 1 << scale_inc; /* 2^scale_inc */
- MapCoord ulm2 = ulm;
- ulm2.x = ulm.x / scale_factor;
- ulm2.y = ulm.y / scale_factor;
- ulm2.scale = ulm.scale + scale_inc;
- pixbuf = get_pixbuf ( vml, id, mapname, &ulm2, path_buf, max_path_len, xshrinkfactor * scale_factor, yshrinkfactor * scale_factor );
- if ( pixbuf ) {
- gint src_x = (ulm.x % scale_factor) * tilesize_x_ceil;
- gint src_y = (ulm.y % scale_factor) * tilesize_y_ceil;
-#ifdef DEBUG
- printf("maps_layer_draw_section - x=%d, y=%d, z=%d, src_x=%d, src_y=%d, xx=%d, yy=%d - %x\n", ulm.x, ulm.y, ulm.scale, src_x, src_y, (int)xx, (int)yy, vvp);
-#endif
- vik_viewport_draw_pixbuf ( vvp, pixbuf, src_x, src_y, xx, yy, tilesize_x_ceil, tilesize_y_ceil );
- break;
- }
+ // Try correct scale first
+ int scale_factor = 1;
+ pixbuf = get_pixbuf ( vml, id, mapname, &ulm, path_buf, max_path_len, xshrinkfactor * scale_factor, yshrinkfactor * scale_factor );
+ if ( pixbuf ) {
+ gint src_x = (ulm.x % scale_factor) * tilesize_x_ceil;
+ gint src_y = (ulm.y % scale_factor) * tilesize_y_ceil;
+ vik_viewport_draw_pixbuf ( vvp, pixbuf, src_x, src_y, xx, yy, tilesize_x_ceil, tilesize_y_ceil );
}
- if ( !pixbuf ) {
- /* retry with bigger zooms */
- int scale_dec;
- for (scale_dec = 1; scale_dec < 2; scale_dec ++) {
- int pict_x, pict_y;
- int scale_factor = 1 << scale_dec; /* 2^scale_dec */
- MapCoord ulm2 = ulm;
- ulm2.x = ulm.x * scale_factor;
- ulm2.y = ulm.y * scale_factor;
- ulm2.scale = ulm.scale - scale_dec;
- for (pict_x = 0; pict_x < scale_factor; pict_x ++) {
- for (pict_y = 0; pict_y < scale_factor; pict_y ++) {
- MapCoord ulm3 = ulm2;
- ulm3.x += pict_x;
- ulm3.y += pict_y;
- pixbuf = get_pixbuf ( vml, id, mapname, &ulm3, path_buf, max_path_len, xshrinkfactor / scale_factor, yshrinkfactor / scale_factor );
- if ( pixbuf ) {
- gint src_x = 0;
- gint src_y = 0;
- gint dest_x = xx + pict_x * (tilesize_x_ceil / scale_factor);
- gint dest_y = yy + pict_y * (tilesize_y_ceil / scale_factor);
- vik_viewport_draw_pixbuf ( vvp, pixbuf, src_x, src_y, dest_x, dest_y, tilesize_x_ceil / scale_factor, tilesize_y_ceil / scale_factor );
- }
- }
+ else {
+ // Otherwise try different scales
+ if ( SCALE_SMALLER_ZOOM_FIRST ) {
+ if ( !try_draw_scale_down(vml,vvp,ulm,xx,yy,tilesize_x_ceil,tilesize_y_ceil,xshrinkfactor,yshrinkfactor,id,mapname,path_buf,max_path_len) ) {
+ try_draw_scale_up(vml,vvp,ulm,xx,yy,tilesize_x_ceil,tilesize_y_ceil,xshrinkfactor,yshrinkfactor,id,mapname,path_buf,max_path_len);
+ }
+ }
+ else {
+ if ( !try_draw_scale_up(vml,vvp,ulm,xx,yy,tilesize_x_ceil,tilesize_y_ceil,xshrinkfactor,yshrinkfactor,id,mapname,path_buf,max_path_len) ) {
+ try_draw_scale_down(vml,vvp,ulm,xx,yy,tilesize_x_ceil,tilesize_y_ceil,xshrinkfactor,yshrinkfactor,id,mapname,path_buf,max_path_len);
}
}
}
projects / andy / viking.git / blobdiff