added mouse wheel support also for SDL2 target

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

diff --git a/src/libgame/gadgets.c b/src/libgame/gadgets.c
index 1c52ec5d422e5ce591426280d792a62af9871c49..1a0da4b45f55ad6dd469efb796edd063049052b4 100644 (file)
--- a/src/libgame/gadgets.c
+++ b/src/libgame/gadgets.c
@@ -704,6 +704,10 @@ static void DrawGadget(struct GadgetInfo *gi, boolean pressed, boolean direct)
       return;
   }
 
+  // do not use direct gadget drawing anymore; this worked as a speed-up once,
+  // but would slow things down a lot now the screen is always fully redrawn
+  direct = FALSE;
+
   if (direct)
   {
     BlitBitmap(drawto, window,
@@ -980,14 +984,12 @@ static void HandleGadgetTags(struct GadgetInfo *gi, int first_tag, va_list ap)
        gi->drawing.area_ysize = va_arg(ap, int);
 
        /* determine dependent values for drawing area gadget, if needed */
-       if (gi->width == 0 && gi->height == 0 &&
-           gi->drawing.item_xsize !=0 && gi->drawing.item_ysize !=0)
+       if (gi->drawing.item_xsize != 0 && gi->drawing.item_ysize != 0)
        {
          gi->width = gi->drawing.area_xsize * gi->drawing.item_xsize;
          gi->height = gi->drawing.area_ysize * gi->drawing.item_ysize;
        }
-       else if (gi->drawing.item_xsize == 0 && gi->drawing.item_ysize == 0 &&
-                gi->width != 0 && gi->height != 0)
+       else if (gi->width != 0 && gi->height != 0)
        {
          gi->drawing.item_xsize = gi->width / gi->drawing.area_xsize;
          gi->drawing.item_ysize = gi->height / gi->drawing.area_ysize;
@@ -1010,14 +1012,12 @@ static void HandleGadgetTags(struct GadgetInfo *gi, int first_tag, va_list ap)
        gi->drawing.item_ysize = va_arg(ap, int);
 
        /* determine dependent values for drawing area gadget, if needed */
-       if (gi->width == 0 && gi->height == 0 &&
-           gi->drawing.area_xsize !=0 && gi->drawing.area_ysize !=0)
+       if (gi->drawing.area_xsize != 0 && gi->drawing.area_ysize != 0)
        {
          gi->width = gi->drawing.area_xsize * gi->drawing.item_xsize;
          gi->height = gi->drawing.area_ysize * gi->drawing.item_ysize;
        }
-       else if (gi->drawing.area_xsize == 0 && gi->drawing.area_ysize == 0 &&
-                gi->width != 0 && gi->height != 0)
+       else if (gi->width != 0 && gi->height != 0)
        {
          gi->drawing.area_xsize = gi->width / gi->drawing.item_xsize;
          gi->drawing.area_ysize = gi->height / gi->drawing.item_ysize;
@@ -1779,7 +1779,7 @@ boolean HandleGadgets(int mx, int my, int button)
        {
          boolean scroll_single_step = ((GetKeyModState() & KMOD_Alt) != 0);
 
-         item_steps = (scroll_single_step ? 1 : DEFAULT_WHEEL_STEPS);
+         item_steps = (scroll_single_step ? 1 : wheel_steps);
          item_direction = (button == MB_WHEEL_UP ||
                            button == MB_WHEEL_LEFT ? -1 : +1);
        }