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(svn r24589) -Codechange: Return early in HandleAutoscroll() instead of nesting ifs.

This commit is contained in:
frosch 2012-10-13 08:34:10 +00:00
parent 9d877e888a
commit 2abe4ac280
1 changed files with 24 additions and 22 deletions
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46
src/window.cpp
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@ -2290,31 +2290,33 @@ static int _input_events_this_tick = 0;
*/
static void HandleAutoscroll()
{
if (_settings_client.gui.autoscroll && _game_mode != GM_MENU && !HasModalProgress()) {
int x = _cursor.pos.x;
int y = _cursor.pos.y;
Window *w = FindWindowFromPt(x, y);
if (w == NULL || w->flags & WF_DISABLE_VP_SCROLL) return;
ViewPort *vp = IsPtInWindowViewport(w, x, y);
if (vp != NULL) {
x -= vp->left;
y -= vp->top;
if (_game_mode == GM_MENU || HasModalProgress()) return;
if (!_settings_client.gui.autoscroll) return;
/* here allows scrolling in both x and y axis */
int x = _cursor.pos.x;
int y = _cursor.pos.y;
Window *w = FindWindowFromPt(x, y);
if (w == NULL || w->flags & WF_DISABLE_VP_SCROLL) return;
ViewPort *vp = IsPtInWindowViewport(w, x, y);
if (vp == NULL) return;
x -= vp->left;
y -= vp->top;
/* here allows scrolling in both x and y axis */
#define scrollspeed 3
if (x - 15 < 0) {
w->viewport->dest_scrollpos_x += ScaleByZoom((x - 15) * scrollspeed, vp->zoom);
} else if (15 - (vp->width - x) > 0) {
w->viewport->dest_scrollpos_x += ScaleByZoom((15 - (vp->width - x)) * scrollspeed, vp->zoom);
}
if (y - 15 < 0) {
w->viewport->dest_scrollpos_y += ScaleByZoom((y - 15) * scrollspeed, vp->zoom);
} else if (15 - (vp->height - y) > 0) {
w->viewport->dest_scrollpos_y += ScaleByZoom((15 - (vp->height - y)) * scrollspeed, vp->zoom);
}
#undef scrollspeed
}
if (x - 15 < 0) {
w->viewport->dest_scrollpos_x += ScaleByZoom((x - 15) * scrollspeed, vp->zoom);
} else if (15 - (vp->width - x) > 0) {
w->viewport->dest_scrollpos_x += ScaleByZoom((15 - (vp->width - x)) * scrollspeed, vp->zoom);
}
if (y - 15 < 0) {
w->viewport->dest_scrollpos_y += ScaleByZoom((y - 15) * scrollspeed, vp->zoom);
} else if (15 - (vp->height - y) > 0) {
w->viewport->dest_scrollpos_y += ScaleByZoom((15 - (vp->height - y)) * scrollspeed, vp->zoom);
}
#undef scrollspeed
}
enum MouseClick {