diff options
Diffstat (limited to 'viewport.c')
| -rw-r--r-- | viewport.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/viewport.c b/viewport.c index 79ae0b269..6d6f5cf58 100644 --- a/viewport.c +++ b/viewport.c @@ -375,6 +375,21 @@ Point GetTileZoomCenterWindow(bool in, Window * w) return GetTileFromScreenXY(_cursor.pos.x, _cursor.pos.y, x + vp->left, y + vp->top); } +/** Update the status of the zoom-buttons according to the zoom-level + * of the viewport. This will update their status and invalidate accordingly + * @param window pointer to the window that has the zoom buttons + * @param vp pointer to the viewport whose zoom-level the buttons represent + * @param widget_zoom_in widget index for window with zoom-in button + * @param widget_zoom_out widget index for window with zoom-out button */ +void HandleZoomMessage(Window *w, const ViewPort *vp, byte widget_zoom_in, byte widget_zoom_out) +{ + SetWindowWidgetDisabledState(w, widget_zoom_in, vp->zoom == 0); + InvalidateWidget(w, widget_zoom_in); + + SetWindowWidgetDisabledState(w, widget_zoom_out, vp->zoom == 2); + InvalidateWidget(w, widget_zoom_out); +} + void DrawGroundSpriteAt(uint32 image, int32 x, int32 y, byte z) { ViewportDrawer *vd = _cur_vd; |