rnd-20050807-1-src

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

diff --git a/src/libgame/gadgets.c b/src/libgame/gadgets.c
index 3431719caeb799898974860d5982cced01e4df71..5ac104c8a254688839d0f1111ce3f17efa951fc0 100644 (file)
--- a/src/libgame/gadgets.c
+++ b/src/libgame/gadgets.c
@@ -744,11 +744,11 @@ static void HandleGadgetTags(struct GadgetInfo *gi, int first_tag, va_list ap)
        break;
 
       case GDI_TYPE:
-       gi->type = va_arg(ap, unsigned long);
+       gi->type = va_arg(ap, unsigned int);
        break;
 
       case GDI_STATE:
-       gi->state = va_arg(ap, unsigned long);
+       gi->state = va_arg(ap, unsigned int);
        break;
 
       case GDI_ACTIVE:
@@ -770,18 +770,18 @@ static void HandleGadgetTags(struct GadgetInfo *gi, int first_tag, va_list ap)
        break;
 
       case GDI_RADIO_NR:
-       gi->radio_nr = va_arg(ap, unsigned long);
+       gi->radio_nr = va_arg(ap, unsigned int);
        break;
 
       case GDI_NUMBER_VALUE:
-       gi->textinput.number_value = va_arg(ap, long);
+       gi->textinput.number_value = va_arg(ap, int);
        sprintf(gi->textinput.value, "%d", gi->textinput.number_value);
        strcpy(gi->textinput.last_value, gi->textinput.value);
        gi->textinput.cursor_position = strlen(gi->textinput.value);
        break;
 
       case GDI_NUMBER_MIN:
-       gi->textinput.number_min = va_arg(ap, long);
+       gi->textinput.number_min = va_arg(ap, int);
        if (gi->textinput.number_value < gi->textinput.number_min)
        {
          gi->textinput.number_value = gi->textinput.number_min;
@@ -791,7 +791,7 @@ static void HandleGadgetTags(struct GadgetInfo *gi, int first_tag, va_list ap)
        break;
 
       case GDI_NUMBER_MAX:
-       gi->textinput.number_max = va_arg(ap, long);
+       gi->textinput.number_max = va_arg(ap, int);
        if (gi->textinput.number_value > gi->textinput.number_max)
        {
          gi->textinput.number_value = gi->textinput.number_max;
@@ -919,7 +919,7 @@ static void HandleGadgetTags(struct GadgetInfo *gi, int first_tag, va_list ap)
        break;
 
       case GDI_EVENT_MASK:
-       gi->event_mask = va_arg(ap, unsigned long);
+       gi->event_mask = va_arg(ap, unsigned int);
        break;
 
       case GDI_AREA_SIZE:
@@ -1068,7 +1068,11 @@ static void HandleGadgetTags(struct GadgetInfo *gi, int first_tag, va_list ap)
     getFontCharSource(font_nr, FONT_ASCII_CURSOR, &src_bitmap, &src_x, &src_y);
     src_x += font_width / 2;
     src_y += font_height / 2;
-    gi->selectbox.inverse_color = GetPixel(src_bitmap, src_x, src_y);
+
+    /* there may be esoteric cases with missing or too small font bitmap */
+    if (src_bitmap != NULL &&
+       src_x < src_bitmap->width && src_y < src_bitmap->height)
+      gi->selectbox.inverse_color = GetPixel(src_bitmap, src_x, src_y);
 
     /* always start with closed selectbox */
     gi->selectbox.open = FALSE;
@@ -1101,16 +1105,23 @@ static void HandleGadgetTags(struct GadgetInfo *gi, int first_tag, va_list ap)
   if (gi->type & GD_TYPE_SCROLLBAR)
   {
     struct GadgetScrollbar *gs = &gi->scrollbar;
+    int scrollbar_size_cmp;
 
     if (gi->width == 0 || gi->height == 0 ||
        gs->items_max == 0 || gs->items_visible == 0)
       Error(ERR_EXIT, "scrollbar gadget incomplete (missing tags)");
 
     /* calculate internal scrollbar values */
+    gs->size_min = (gi->type == GD_TYPE_SCROLLBAR_VERTICAL ?
+                   gi->width : gi->height);
     gs->size_max = (gi->type == GD_TYPE_SCROLLBAR_VERTICAL ?
                    gi->height : gi->width);
-    gs->size = gs->size_max * gs->items_visible / gs->items_max;
-    gs->position = gs->size_max * gs->item_position / gs->items_max;
+
+    scrollbar_size_cmp = gs->size_max * gs->items_visible / gs->items_max;
+    gs->size = MAX(scrollbar_size_cmp, gs->size_min);
+    gs->size_max_cmp = (gs->size_max - (gs->size - scrollbar_size_cmp));
+
+    gs->position = gs->size_max_cmp * gs->item_position / gs->items_max;
     gs->position_max = gs->size_max - gs->size;
     gs->correction = gs->size_max / gs->items_max / 2;
 
@@ -1309,21 +1320,33 @@ void RemapAllGadgets()
   MultiMapGadgets(MULTIMAP_ALL | MULTIMAP_REMAP);
 }
 
-static boolean anyTextInputGadgetActive()
+boolean anyTextInputGadgetActive()
 {
   return (last_gi && (last_gi->type & GD_TYPE_TEXT_INPUT) && last_gi->mapped);
 }
 
-static boolean anyTextAreaGadgetActive()
+boolean anyTextAreaGadgetActive()
 {
   return (last_gi && (last_gi->type & GD_TYPE_TEXT_AREA) && last_gi->mapped);
 }
 
-static boolean anySelectboxGadgetActive()
+boolean anySelectboxGadgetActive()
 {
   return (last_gi && (last_gi->type & GD_TYPE_SELECTBOX) && last_gi->mapped);
 }
 
+boolean anyScrollbarGadgetActive()
+{
+  return (last_gi && (last_gi->type & GD_TYPE_SCROLLBAR) && last_gi->mapped);
+}
+
+boolean anyTextGadgetActive()
+{
+  return (anyTextInputGadgetActive() ||
+         anyTextAreaGadgetActive() ||
+         anySelectboxGadgetActive());
+}
+
 static boolean insideSelectboxLine(struct GadgetInfo *gi, int mx, int my)
 {
   return(gi != NULL &&
@@ -1340,13 +1363,6 @@ static boolean insideSelectboxArea(struct GadgetInfo *gi, int mx, int my)
         my >= gi->selectbox.y && my < gi->selectbox.y + gi->selectbox.height);
 }
 
-boolean anyTextGadgetActive()
-{
-  return (anyTextInputGadgetActive() ||
-         anyTextAreaGadgetActive() ||
-         anySelectboxGadgetActive());
-}
-
 void ClickOnGadget(struct GadgetInfo *gi, int button)
 {
   if (!gi->mapped)
@@ -1701,7 +1717,7 @@ boolean HandleGadgets(int mx, int my, int button)
 
        if (gs->item_position < 0)
          gs->item_position = 0;
-       if (gs->item_position > gs->items_max - gs->items_visible)
+       else if (gs->item_position > gs->items_max - gs->items_visible)
          gs->item_position = gs->items_max - gs->items_visible;
 
        if (old_item_position != gs->item_position)
@@ -1783,13 +1799,22 @@ boolean HandleGadgets(int mx, int my, int button)
 
       gs->position = scrollbar_mouse_pos - gs->drag_position;
 
-      if (gs->position < 0)
+      /* make sure to always precisely reach end positions when dragging */
+      if (gs->position <= 0)
+      {
        gs->position = 0;
-      if (gs->position > gs->position_max)
+       gs->item_position = 0;
+      }
+      else if (gs->position >= gs->position_max)
+      {
        gs->position = gs->position_max;
-
-      gs->item_position =
-       gs->items_max * (gs->position + gs->correction) / gs->size_max;
+       gs->item_position = gs->items_max - gs->items_visible;
+      }
+      else
+      {
+       gs->item_position =
+         gs->items_max * (gs->position + gs->correction) / gs->size_max_cmp;
+      }
 
       if (gs->item_position < 0)
        gs->item_position = 0;