Module: wine Branch: master Commit: 52c44bd8f02839bed1ba15470b84af6b032651da URL: https://source.winehq.org/git/wine.git/?a=commit;h=52c44bd8f02839bed1ba15470...
Author: Zhiyi Zhang zzhang@codeweavers.com Date: Thu Sep 9 14:49:03 2021 +0800
user32: Scale scroll bar minimum thumb size according to DPI.
Signed-off-by: Zhiyi Zhang zzhang@codeweavers.com Signed-off-by: Alexandre Julliard julliard@winehq.org
---
dlls/user32/scroll.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-)
diff --git a/dlls/user32/scroll.c b/dlls/user32/scroll.c index d62020f8f23..a17495d9ff0 100644 --- a/dlls/user32/scroll.c +++ b/dlls/user32/scroll.c @@ -195,7 +195,7 @@ static BOOL SCROLL_GetScrollBarRect( HWND hwnd, INT nBar, RECT *lprect, INT *arrowSize, INT *thumbSize, INT *thumbPos ) { - INT pixels; + INT pixels, min_thumb_size; BOOL vertical; WND *wndPtr = WIN_GetPtr( hwnd );
@@ -265,7 +265,8 @@ static BOOL SCROLL_GetScrollBarRect( HWND hwnd, INT nBar, RECT *lprect, if (info->page) { *thumbSize = MulDiv(pixels,info->page,(info->maxVal-info->minVal+1)); - if (*thumbSize < SCROLL_MIN_THUMB) *thumbSize = SCROLL_MIN_THUMB; + min_thumb_size = MulDiv(SCROLL_MIN_THUMB, GetDpiForWindow(hwnd), 96); + if (*thumbSize < min_thumb_size) *thumbSize = min_thumb_size; } else *thumbSize = GetSystemMetrics(SM_CXVSCROLL);
@@ -329,10 +330,10 @@ static void SCROLL_GetScrollBarDrawInfo( HWND hwnd, INT bar, * Compute the current scroll position based on the thumb position in pixels * from the top of the scroll-bar. */ -static UINT SCROLL_GetThumbVal( SCROLLBAR_INFO *infoPtr, RECT *rect, - BOOL vertical, INT pos ) +static UINT SCROLL_GetThumbVal( HWND hwnd, SCROLLBAR_INFO *infoPtr, RECT *rect, BOOL vertical, + INT pos ) { - INT thumbSize; + INT thumbSize, minThumbSize; INT pixels = vertical ? rect->bottom-rect->top : rect->right-rect->left; INT range;
@@ -342,7 +343,8 @@ static UINT SCROLL_GetThumbVal( SCROLLBAR_INFO *infoPtr, RECT *rect, if (infoPtr->page) { thumbSize = MulDiv(pixels,infoPtr->page,(infoPtr->maxVal-infoPtr->minVal+1)); - if (thumbSize < SCROLL_MIN_THUMB) thumbSize = SCROLL_MIN_THUMB; + minThumbSize = MulDiv(SCROLL_MIN_THUMB, GetDpiForWindow(hwnd), 96); + if (thumbSize < minThumbSize) thumbSize = minThumbSize; } else thumbSize = GetSystemMetrics(SM_CXVSCROLL);
@@ -938,7 +940,7 @@ void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt ) g_tracking_info.win = hwnd; g_tracking_info.bar = nBar; g_tracking_info.thumb_pos = trackThumbPos + lastMousePos - lastClickPos; - g_tracking_info.thumb_val = SCROLL_GetThumbVal( infoPtr, &rect, vertical, + g_tracking_info.thumb_val = SCROLL_GetThumbVal( hwnd, infoPtr, &rect, vertical, g_tracking_info.thumb_pos ); if (!SCROLL_MovingThumb) { @@ -964,7 +966,7 @@ void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt ) { lastMousePos = pos; g_tracking_info.thumb_pos = trackThumbPos + pos - lastClickPos; - g_tracking_info.thumb_val = SCROLL_GetThumbVal( infoPtr, &rect, vertical, + g_tracking_info.thumb_val = SCROLL_GetThumbVal( hwnd, infoPtr, &rect, vertical, g_tracking_info.thumb_pos ); SendMessageW( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL, MAKEWPARAM( SB_THUMBTRACK, g_tracking_info.thumb_val ), @@ -1012,7 +1014,7 @@ void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt )
if (hittest == SCROLL_THUMB) { - UINT val = SCROLL_GetThumbVal( infoPtr, &rect, vertical, + UINT val = SCROLL_GetThumbVal( hwnd, infoPtr, &rect, vertical, trackThumbPos + lastMousePos - lastClickPos ); SendMessageW( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL, MAKEWPARAM( SB_THUMBTRACK, val ), (LPARAM)hwndCtl ); @@ -1026,7 +1028,7 @@ void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt )
if (hittest == SCROLL_THUMB) { - UINT val = SCROLL_GetThumbVal( infoPtr, &rect, vertical, + UINT val = SCROLL_GetThumbVal( hwnd, infoPtr, &rect, vertical, trackThumbPos + lastMousePos - lastClickPos ); SendMessageW( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL, MAKEWPARAM( SB_THUMBPOSITION, val ), (LPARAM)hwndCtl );
-
Alexandre Julliard