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comctl32/trackbar: Scale thumb size with resolution.

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Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Nikolay Sivov 2018-07-17 14:13:03 +03:00 committed by Alexandre Julliard
parent 6292c0abdc
commit 489c01eeb2
1 changed files with 14 additions and 11 deletions
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25
dlls/comctl32/trackbar.c
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@ -1468,25 +1468,28 @@ TRACKBAR_SetUnicodeFormat (TRACKBAR_INFO *infoPtr, BOOL fUnicode)
return bTemp;
}
static int get_scaled_metric(const TRACKBAR_INFO *infoPtr, int value)
{
return MulDiv(value, GetDpiForWindow(infoPtr->hwndSelf), 96);
}
static LRESULT
TRACKBAR_InitializeThumb (TRACKBAR_INFO *infoPtr)
{
int client_size;
RECT rect;
int clientWidth, clientMetric;
/* initial thumb length */
clientMetric = (infoPtr->dwStyle & TBS_ENABLESELRANGE) ? 23 : 21;
infoPtr->uThumbLen = get_scaled_metric(infoPtr, infoPtr->dwStyle & TBS_ENABLESELRANGE ? 23 : 21);
GetClientRect(infoPtr->hwndSelf,&rect);
if (infoPtr->dwStyle & TBS_VERT) {
clientWidth = rect.right - rect.left;
} else {
clientWidth = rect.bottom - rect.top;
}
if (clientWidth >= clientMetric)
infoPtr->uThumbLen = clientMetric;
if (infoPtr->dwStyle & TBS_VERT)
client_size = rect.right - rect.left;
else
infoPtr->uThumbLen = clientWidth > 9 ? clientWidth - 6 : 4;
client_size = rect.bottom - rect.top;
if (client_size < infoPtr->uThumbLen)
infoPtr->uThumbLen = client_size > get_scaled_metric(infoPtr, 9) ?
client_size - get_scaled_metric(infoPtr, 5) : get_scaled_metric(infoPtr, 4);
TRACKBAR_CalcChannel (infoPtr);
TRACKBAR_UpdateThumb (infoPtr);