added null pointer check to gadget function

[rocksndiamonds.git] / src / libgame / gadgets.c

diff --git a/src/libgame/gadgets.c b/src/libgame/gadgets.c
index 736f1465fb2d381b5a07419f4f28759ff55de656..a797c75475a1a9b41bf9f6cb2e25a79a67f5f406 100644 (file)
--- a/src/libgame/gadgets.c
+++ b/src/libgame/gadgets.c
@@ -1481,7 +1481,7 @@ static boolean insideSelectboxArea(struct GadgetInfo *gi, int mx, int my)
 
 void ClickOnGadget(struct GadgetInfo *gi, int button)
 {
-  if (!gi->mapped)
+  if (gi == NULL || gi->deactivated || !gi->mapped)
     return;
 
   /* simulate releasing mouse button over last gadget, if still pressed */
@@ -1681,16 +1681,20 @@ boolean HandleGadgets(int mx, int my, int button)
   {
     int last_x = gi->event.x;
     int last_y = gi->event.y;
+    int last_mx = gi->event.mx;
+    int last_my = gi->event.my;
 
-    gi->event.x = mx - gi->x;
-    gi->event.y = my - gi->y;
+    gi->event.x = gi->event.mx = mx - gi->x;
+    gi->event.y = gi->event.my = my - gi->y;
 
     if (gi->type == GD_TYPE_DRAWING_AREA)
     {
       gi->event.x /= gi->drawing.item_xsize;
       gi->event.y /= gi->drawing.item_ysize;
 
-      if (last_x != gi->event.x || last_y != gi->event.y)
+      if (last_x != gi->event.x || last_y != gi->event.y ||
+         ((last_mx != gi->event.mx || last_my != gi->event.my) &&
+          gi->event_mask & GD_EVENT_PIXEL_PRECISE))
        changed_position = TRUE;
     }
     else if (gi->type & GD_TYPE_TEXT_INPUT && button != 0 && !motion_status)
@@ -1709,7 +1713,8 @@ boolean HandleGadgets(int mx, int my, int button)
       if (gi->textinput.cursor_position != old_cursor_position)
        DrawGadget(gi, DG_PRESSED, gi->direct_draw);
 
-      StartTextInput(gi->x, gi->y);
+      if (press_event)
+       StartTextInput(gi->x, gi->y, gi->width, gi->height);
     }
     else if (gi->type & GD_TYPE_TEXT_AREA && button != 0 && !motion_status)
     {
@@ -1725,7 +1730,8 @@ boolean HandleGadgets(int mx, int my, int button)
       if (gi->textarea.cursor_position != old_cursor_position)
        DrawGadget(gi, DG_PRESSED, gi->direct_draw);
 
-      StartTextInput(gi->x, gi->y);
+      if (press_event)
+       StartTextInput(gi->x, gi->y, gi->width, gi->height);
     }
     else if (gi->type & GD_TYPE_SELECTBOX && gi->selectbox.open &&
             !keep_selectbox_open)
@@ -1756,7 +1762,7 @@ boolean HandleGadgets(int mx, int my, int button)
       new_gi->event.type = GD_EVENT_INFO_ENTERING;
       new_gi->callback_info(new_gi);
     }
-    else if (last_info_gi != NULL)
+    else if (last_info_gi != NULL && last_info_gi->mapped)
     {
       last_info_gi->event.type = GD_EVENT_INFO_LEAVING;
       last_info_gi->callback_info(last_info_gi);