rnd-20060723-1-src

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

diff --git a/src/libgame/gadgets.c b/src/libgame/gadgets.c
index 2f980f3c1cf0065ec44b37312b6e6de90b5e0f05..ede8cfc7f54cad4888b0209ef96a99db72a93f24 100644 (file)
--- a/src/libgame/gadgets.c
+++ b/src/libgame/gadgets.c
@@ -28,6 +28,7 @@
 
 static struct GadgetInfo *gadget_list_first_entry = NULL;
 static struct GadgetInfo *gadget_list_last_entry = NULL;
+static struct GadgetInfo *last_info_gi = NULL;
 static int next_free_gadget_id = 1;
 static boolean gadget_id_wrapped = FALSE;
 
@@ -163,12 +164,16 @@ static void default_callback_action(void *ptr)
 
 static void DrawGadget(struct GadgetInfo *gi, boolean pressed, boolean direct)
 {
+  struct GadgetDesign *gd;
   int state = (pressed ? GD_BUTTON_PRESSED : GD_BUTTON_UNPRESSED);
-  struct GadgetDesign *gd = (!gi->active ? &gi->alt_design[state] :
-                            gi->checked ? &gi->alt_design[state] :
-                            &gi->design[state]);
   boolean redraw_selectbox = FALSE;
 
+  if (gi == NULL)
+    return;
+
+  gd = (!gi->active ? &gi->alt_design[state] :
+       gi->checked ? &gi->alt_design[state] : &gi->design[state]);
+
   switch (gi->type)
   {
     case GD_TYPE_NORMAL_BUTTON:
@@ -686,6 +691,9 @@ static void HandleGadgetTags(struct GadgetInfo *gi, int first_tag, va_list ap)
 {
   int tag = first_tag;
 
+  if (gi == NULL)
+    return;
+
   while (tag != GDI_END)
   {
     switch(tag)
@@ -1149,6 +1157,9 @@ void ModifyGadget(struct GadgetInfo *gi, int first_tag, ...)
 
 void RedrawGadget(struct GadgetInfo *gi)
 {
+  if (gi == NULL)
+    return;
+
   if (gi->mapped)
     DrawGadget(gi, gi->state, gi->direct_draw);
 }
@@ -1187,6 +1198,10 @@ void FreeGadget(struct GadgetInfo *gi)
 {
   struct GadgetInfo *gi_previous = gadget_list_first_entry;
 
+  /* prevent "last_info_gi" from pointing to memory that will be freed */
+  if (last_info_gi == gi)
+    last_info_gi = NULL;
+
   while (gi_previous != NULL && gi_previous->next != gi)
     gi_previous = gi_previous->next;
 
@@ -1366,11 +1381,11 @@ void ClickOnGadget(struct GadgetInfo *gi, int button)
 
 boolean HandleGadgets(int mx, int my, int button)
 {
-  static struct GadgetInfo *last_info_gi = NULL;
   static unsigned long pressed_delay = 0;
   static int last_button = 0;
   static int last_mx = 0, last_my = 0;
   static int pressed_mx = 0, pressed_my = 0;
+  static boolean keep_selectbox_open = FALSE;
   int scrollbar_mouse_pos = 0;
   struct GadgetInfo *new_gi, *gi;
   boolean press_event;
@@ -1449,7 +1464,7 @@ boolean HandleGadgets(int mx, int my, int button)
     {
       CheckRangeOfNumericInputGadget(gi);
 
-      if (strcmp(gi->textinput.value, gi->textinput.last_value) != 0)
+      if (!strEqual(gi->textinput.last_value, gi->textinput.value))
        strcpy(gi->textinput.last_value, gi->textinput.value);
       else
        gadget_changed = FALSE;
@@ -1497,6 +1512,10 @@ boolean HandleGadgets(int mx, int my, int button)
     gadget_released_inside_select_area = FALSE;
   }
 
+  /* setting state for handling over-large selectbox */
+  if (keep_selectbox_open && (press_event || !mouse_inside_select_line))
+    keep_selectbox_open = FALSE;
+
   /* if new gadget pressed, store this gadget  */
   if (gadget_pressed)
     last_gi = new_gi;
@@ -1513,8 +1532,9 @@ boolean HandleGadgets(int mx, int my, int button)
   if (gadget_released)
   {
     if (gi->type & GD_TYPE_SELECTBOX &&
-       (mouse_released_where_pressed ||
-       !gadget_released_inside_select_area))        /* selectbox stays open */
+       (keep_selectbox_open ||
+        mouse_released_where_pressed ||
+        !gadget_released_inside_select_area))       /* selectbox stays open */
     {
       gi->selectbox.stay_open = TRUE;
       pressed_mx = 0;
@@ -1575,7 +1595,8 @@ boolean HandleGadgets(int mx, int my, int button)
       if (gi->textarea.cursor_position != old_cursor_position)
        DrawGadget(gi, DG_PRESSED, gi->direct_draw);
     }
-    else if (gi->type & GD_TYPE_SELECTBOX && gi->selectbox.open)
+    else if (gi->type & GD_TYPE_SELECTBOX && gi->selectbox.open &&
+            !keep_selectbox_open)
     {
       int old_index = gi->selectbox.current_index;
 
@@ -1699,6 +1720,12 @@ boolean HandleGadgets(int mx, int my, int button)
        return TRUE;
       }
     }
+    else if (gi->type & GD_TYPE_SELECTBOX)
+    {
+      /* keep selectbox open in case of over-large selectbox */
+      keep_selectbox_open = (mouse_inside_select_line &&
+                            mouse_inside_select_area);
+    }
 
     DrawGadget(gi, DG_PRESSED, gi->direct_draw);
 
@@ -1732,7 +1759,7 @@ boolean HandleGadgets(int mx, int my, int button)
       else if (gadget_moving_off_borders && gi->state == GD_BUTTON_PRESSED)
        DrawGadget(gi, DG_UNPRESSED, gi->direct_draw);
     }
-    else if (gi->type & GD_TYPE_SELECTBOX)
+    else if (gi->type & GD_TYPE_SELECTBOX && !keep_selectbox_open)
     {
       int old_index = gi->selectbox.current_index;
 
@@ -1804,7 +1831,8 @@ boolean HandleGadgets(int mx, int my, int button)
 
     if (gi->type & GD_TYPE_SELECTBOX)
     {
-      if (mouse_released_where_pressed ||
+      if (keep_selectbox_open ||
+         mouse_released_where_pressed ||
          !gadget_released_inside_select_area)       /* selectbox stays open */
       {
        deactivate_gadget = FALSE;
@@ -1883,7 +1911,7 @@ boolean HandleGadgetsKeyInput(Key key)
     {
       CheckRangeOfNumericInputGadget(gi);
 
-      if (strcmp(gi->textinput.value, gi->textinput.last_value) != 0)
+      if (!strEqual(gi->textinput.last_value, gi->textinput.value))
        strcpy(gi->textinput.last_value, gi->textinput.value);
       else
        gadget_changed = FALSE;