[PATCH 4/6] user32: Separate scroll bar drawing calculation from actual drawing.
Signed-off-by: Zhiyi Zhang <zzhang(a)codeweavers.com> --- dlls/user32/scroll.c | 123 +++++++++++++++++++++++-------------------- 1 file changed, 65 insertions(+), 58 deletions(-) diff --git a/dlls/user32/scroll.c b/dlls/user32/scroll.c index e941c00a562..6e9f899496f 100644 --- a/dlls/user32/scroll.c +++ b/dlls/user32/scroll.c @@ -91,10 +91,6 @@ static BOOL SCROLL_ShowScrollBar( HWND hwnd, INT nBar, BOOL fShowH, BOOL fShowV ); static INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar, const SCROLLINFO *info, BOOL bRedraw ); -static void SCROLL_DrawInterior( HWND hwnd, HDC hdc, INT nBar, RECT *rect, INT arrowSize, - INT thumbSize, INT thumbPos, UINT flags, BOOL vertical, - BOOL top_selected, BOOL bottom_selected ); - /********************************************************************* * scrollbar class descriptor @@ -256,7 +252,7 @@ static BOOL SCROLL_GetScrollBarRect( HWND hwnd, INT nBar, RECT *lprect, } else { - SCROLLBAR_INFO *info = SCROLL_GetInternalInfo( hwnd, nBar, FALSE ); + SCROLLBAR_INFO *info = SCROLL_GetInternalInfo( hwnd, nBar, TRUE ); if (!info) { WARN("called for missing scroll bar\n"); @@ -293,6 +289,29 @@ static BOOL SCROLL_GetScrollBarRect( HWND hwnd, INT nBar, RECT *lprect, return vertical; } +static void SCROLL_GetScrollBarDrawInfo( HWND hwnd, INT bar, + const struct SCROLL_TRACKING_INFO *tracking_info, + RECT *rect, INT *arrow_size, INT *thumb_size, + INT *thumb_pos, BOOL *vertical ) +{ + INT pos, max_size; + + *vertical = SCROLL_GetScrollBarRect( hwnd, bar, rect, arrow_size, thumb_size, thumb_pos ); + + if (SCROLL_MovingThumb && tracking_info->win == hwnd && tracking_info->bar == bar) + { + max_size = *vertical ? rect->bottom - rect->top : rect->right - rect->left; + max_size -= *arrow_size - SCROLL_ARROW_THUMB_OVERLAP + *thumb_size; + + pos = tracking_info->thumb_pos; + if (pos < *arrow_size - SCROLL_ARROW_THUMB_OVERLAP) + pos = *arrow_size - SCROLL_ARROW_THUMB_OVERLAP; + else if (pos > max_size) + pos = max_size; + + *thumb_pos = pos; + } +} /*********************************************************************** * SCROLL_GetThumbVal @@ -447,28 +466,6 @@ static void SCROLL_DrawArrows( HDC hdc, SCROLLBAR_INFO *infoPtr, | (infoPtr->flags&ESB_DISABLE_RTDN ? DFCS_INACTIVE : 0) ); } -static void SCROLL_DrawMovingThumb( HDC hdc, RECT *rect, BOOL vertical, - INT arrowSize, INT thumbSize ) -{ - INT pos = g_tracking_info.thumb_pos; - INT max_size; - - if( vertical ) - max_size = rect->bottom - rect->top; - else - max_size = rect->right - rect->left; - - max_size -= (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) + thumbSize; - - if( pos < (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) ) - pos = (arrowSize-SCROLL_ARROW_THUMB_OVERLAP); - else if( pos > max_size ) - pos = max_size; - - SCROLL_DrawInterior( g_tracking_info.win, hdc, g_tracking_info.bar, rect, arrowSize, thumbSize, pos, - 0, vertical, FALSE, FALSE ); -} - /*********************************************************************** * SCROLL_DrawInterior * @@ -560,19 +557,11 @@ static void SCROLL_DrawInterior( HWND hwnd, HDC hdc, INT nBar, SelectObject( hdc, hSaveBrush ); } - -/*********************************************************************** - * SCROLL_DrawScrollBar - * - * Redraw the whole scrollbar. - */ -void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar, enum SCROLL_HITTEST hit_test, - const struct SCROLL_TRACKING_INFO *tracking_info, BOOL arrows, - BOOL interior ) +static void SCROLL_DoDrawScrollBar( HWND hwnd, HDC hdc, INT nBar, enum SCROLL_HITTEST hit_test, + const struct SCROLL_TRACKING_INFO *tracking_info, BOOL arrows, + BOOL interior, RECT *rect, INT arrowSize, INT thumbPos, + INT thumbSize, BOOL vertical ) { - INT arrowSize, thumbSize, thumbPos; - RECT rect; - BOOL vertical; SCROLLBAR_INFO *infoPtr = SCROLL_GetInternalInfo( hwnd, nBar, TRUE ); DWORD style = GetWindowLongW( hwnd, GWL_STYLE ); @@ -583,42 +572,30 @@ void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar, enum SCROLL_HITTEST hit ((nBar == SB_HORZ) && !(style & WS_HSCROLL))) return; if (!WIN_IsWindowDrawable( hwnd, FALSE )) return; - vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect, - &arrowSize, &thumbSize, &thumbPos ); - - /* do not draw if the scrollbar rectangle is empty */ - if(IsRectEmpty(&rect)) return; - /* Draw the arrows */ if (arrows && arrowSize) { if (vertical == tracking_info->vertical && GetCapture() == hwnd) - SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical, + SCROLL_DrawArrows( hdc, infoPtr, rect, arrowSize, vertical, hit_test == tracking_info->hit_test && hit_test == SCROLL_TOP_ARROW, hit_test == tracking_info->hit_test && hit_test == SCROLL_BOTTOM_ARROW ); else - SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical, - FALSE, FALSE ); + SCROLL_DrawArrows( hdc, infoPtr, rect, arrowSize, vertical, FALSE, FALSE ); } if (interior) { - if (SCROLL_MovingThumb && tracking_info->win == hwnd && tracking_info->bar == nBar) + if (vertical == tracking_info->vertical && GetCapture() == hwnd) { - SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize ); - SCROLL_MovingThumb = FALSE; - } - else if (vertical == tracking_info->vertical && GetCapture() == hwnd) - { - SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize, thumbPos, + SCROLL_DrawInterior( hwnd, hdc, nBar, rect, arrowSize, thumbSize, thumbPos, infoPtr->flags, vertical, hit_test == tracking_info->hit_test && hit_test == SCROLL_TOP_RECT, hit_test == tracking_info->hit_test && hit_test == SCROLL_BOTTOM_RECT ); } else { - SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize, thumbPos, + SCROLL_DrawInterior( hwnd, hdc, nBar, rect, arrowSize, thumbSize, thumbPos, infoPtr->flags, vertical, FALSE, FALSE ); } } @@ -628,15 +605,45 @@ void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar, enum SCROLL_HITTEST hit { if (!vertical) { - SetCaretPos(thumbPos+1, rect.top+1); + SetCaretPos(thumbPos + 1, rect->top + 1); } else { - SetCaretPos(rect.top+1, thumbPos+1); + SetCaretPos(rect->top + 1, thumbPos + 1); } } } +/*********************************************************************** + * SCROLL_DrawScrollBar + * + * Redraw the whole scrollbar. + */ +void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT bar, enum SCROLL_HITTEST hit_test, + const struct SCROLL_TRACKING_INFO *tracking_info, BOOL draw_arrows, + BOOL draw_interior ) +{ + INT arrow_size, thumb_size, thumb_pos; + BOOL vertical; + RECT rect; + + SCROLL_GetScrollBarDrawInfo( hwnd, bar, tracking_info, &rect, &arrow_size, &thumb_size, + &thumb_pos, &vertical ); + /* do not draw if the scrollbar rectangle is empty */ + if (IsRectEmpty( &rect )) + return; + + TRACE("hwnd %p, hdc %p, bar %d, hit_test %d, tracking_info(win %p, bar %d, thumb_pos %d, " + "track_pos %d, vertical %d, hit_test %d), draw_arrows %d, draw_interior %d, rect %s, " + "arrow_size %d, thumb_pos %d, thumb_val %d, vertical %d, captured window %p\n", hwnd, hdc, + bar, hit_test, tracking_info->win, tracking_info->bar, tracking_info->thumb_pos, + tracking_info->thumb_val, tracking_info->vertical, tracking_info->hit_test, draw_arrows, + draw_interior, wine_dbgstr_rect(&rect), arrow_size, thumb_pos, thumb_size, vertical, + GetCapture()); + SCROLL_DoDrawScrollBar( hwnd, hdc, bar, hit_test, tracking_info, draw_arrows, draw_interior, + &rect, arrow_size, thumb_pos, thumb_size, vertical ); +} + void SCROLL_DrawNCScrollBar( HWND hwnd, HDC hdc, BOOL draw_horizontal, BOOL draw_vertical ) { if (draw_horizontal) -- 2.30.2
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Zhiyi Zhang