void vik_viewport_set_background_color ( VikViewport *vvp, const gchar *colorname )
{
- g_assert ( vvp->background_gc );
- gdk_color_parse ( colorname, &(vvp->background_color) );
- gdk_gc_set_rgb_fg_color ( vvp->background_gc, &(vvp->background_color) );
+ g_assert ( vvp && vvp->background_gc );
+ if ( gdk_color_parse ( colorname, &(vvp->background_color) ) )
+ gdk_gc_set_rgb_fg_color ( vvp->background_gc, &(vvp->background_color) );
+ else
+ g_warning("%s: Failed to parse color '%s'", __FUNCTION__, colorname);
}
void vik_viewport_set_background_gdkcolor ( VikViewport *vvp, GdkColor *color )
{
- g_assert ( vvp->background_gc );
+ g_assert ( vvp && vvp->background_gc );
vvp->background_color = *color;
gdk_gc_set_rgb_fg_color ( vvp->background_gc, color );
}
GdkGC *vik_viewport_new_gc ( VikViewport *vvp, const gchar *colorname, gint thickness )
{
- GdkGC *rv;
+ GdkGC *rv = NULL;
GdkColor color;
rv = gdk_gc_new ( GTK_WIDGET(vvp)->window );
- gdk_color_parse ( colorname, &color );
- gdk_gc_set_rgb_fg_color ( rv, &color );
+ if ( gdk_color_parse ( colorname, &color ) )
+ gdk_gc_set_rgb_fg_color ( rv, &color );
+ else
+ g_warning("%s: Failed to parse color '%s'", __FUNCTION__, colorname);
gdk_gc_set_line_attributes ( rv, thickness, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
return rv;
}
/* this is down here so it can get a GC (necessary?) */
if ( ! vvp->background_gc )
{
- vvp->background_gc = vik_viewport_new_gc ( vvp, "", 1 );
- vik_viewport_set_background_color ( vvp, DEFAULT_BACKGROUND_COLOR ); /* set to "backup" color in vvp->background_color */
+ vvp->background_gc = vik_viewport_new_gc ( vvp, DEFAULT_BACKGROUND_COLOR, 1 );
}
if ( !vvp->scale_bg_gc) {
vvp->scale_bg_gc = vik_viewport_new_gc(vvp, "grey", 3);
void vik_viewport_draw_scale ( VikViewport *vvp )
{
+ g_return_if_fail ( vvp != NULL );
+
if ( vvp->draw_scale ) {
VikCoord left, right;
gdouble unit, base, diff, old_unit, old_diff, ratio;
PangoLayout *pl;
gchar s[128];
- g_return_if_fail ( vvp != NULL );
-
vik_viewport_screen_to_coord ( vvp, 0, vvp->height, &left );
vik_viewport_screen_to_coord ( vvp, vvp->width/SCSIZE, vvp->height, &right );
void vik_viewport_draw_centermark ( VikViewport *vvp )
{
+ g_return_if_fail ( vvp != NULL );
+
if ( !vvp->draw_centermark )
return;
void vik_viewport_screen_to_coord ( VikViewport *vvp, int x, int y, VikCoord *coord )
{
+ g_return_if_fail ( vvp != NULL );
+
if ( vvp->coord_mode == VIK_COORD_UTM ) {
int zone_delta;
struct UTM *utm = (struct UTM *) coord;
coord->mode = VIK_COORD_UTM;
- g_return_if_fail ( vvp != NULL );
-
utm->zone = vvp->center.utm_zone;
utm->letter = vvp->center.utm_letter;
utm->easting = ( ( x - ( vvp->width / 2) ) * vvp->xmpp ) + vvp->center.east_west;