https://git.reactos.org/?p=reactos.git;a=commitdiff;h=236649c626f97c68a9d0a6709a1bb342681b2aa0
commit 236649c626f97c68a9d0a6709a1bb342681b2aa0 Author: Doug Lyons <[email protected]> AuthorDate: Sat Jul 31 08:16:03 2021 -0500 Commit: Stanislav Motylkov <[email protected]> CommitDate: Fri Sep 3 22:34:26 2021 +0300 [UXTHEME][NTUSER] Fix flashing of scrollbar when scrolling (#3868) Based on a patch by I_Kill_Bugs. --- dll/win32/uxtheme/themehooks.c | 24 ++++++++++++++++++++ sdk/include/psdk/winuser.h | 1 + win32ss/user/ntuser/scrollbar.c | 49 +++++++++++++++++++++++++++++++++-------- 3 files changed, 65 insertions(+), 9 deletions(-) diff --git a/dll/win32/uxtheme/themehooks.c b/dll/win32/uxtheme/themehooks.c index 583fce34d4f..f9c045cea67 100644 --- a/dll/win32/uxtheme/themehooks.c +++ b/dll/win32/uxtheme/themehooks.c @@ -576,6 +576,29 @@ dodefault: return g_user32ApiHook.GetScrollInfo(hwnd, fnBar, lpsi); } +INT WINAPI ThemeSetScrollInfo(HWND hWnd, int fnBar, LPCSCROLLINFO lpsi, BOOL bRedraw) +{ + PWND_DATA pwndData; + SCROLLINFO siout; + LPSCROLLINFO lpsiout = &siout; + BOOL IsThemed = FALSE; + + pwndData = ThemeGetWndData(hWnd); + + if (!pwndData) + goto dodefault; + + if (pwndData->hthemeScrollbar) + IsThemed = TRUE; + + memcpy(&siout, lpsi, sizeof(SCROLLINFO)); + if (IsThemed) + siout.fMask |= SIF_THEMED; + +dodefault: + return g_user32ApiHook.SetScrollInfo(hWnd, fnBar, lpsiout, bRedraw); +} + /********************************************************************** * Exports */ @@ -611,6 +634,7 @@ ThemeInitApiHook(UAPIHK State, PUSERAPIHOOK puah) puah->SetWindowRgn = ThemeSetWindowRgn; puah->GetScrollInfo = ThemeGetScrollInfo; + puah->SetScrollInfo = ThemeSetScrollInfo; UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_NCPAINT); UAH_HOOK_MESSAGE(puah->DefWndProcArray, WM_NCACTIVATE); diff --git a/sdk/include/psdk/winuser.h b/sdk/include/psdk/winuser.h index 7e1a9ff2eb3..487140761fc 100644 --- a/sdk/include/psdk/winuser.h +++ b/sdk/include/psdk/winuser.h @@ -1221,6 +1221,7 @@ extern "C" { #define SIF_RANGE 1 #define SIF_DISABLENOSCROLL 8 #define SIF_TRACKPOS 16 +#define SIF_THEMED 128 /* REACTOS Specific Only */ #define SWP_DRAWFRAME 32 #define SWP_FRAMECHANGED 32 #define SWP_HIDEWINDOW 128 diff --git a/win32ss/user/ntuser/scrollbar.c b/win32ss/user/ntuser/scrollbar.c index 75d499b25e6..359bc923f5b 100644 --- a/win32ss/user/ntuser/scrollbar.c +++ b/win32ss/user/ntuser/scrollbar.c @@ -276,6 +276,7 @@ co_IntGetScrollInfo(PWND Window, INT nBar, PSBDATA pSBData, LPSCROLLINFO lpsi) ASSERT_REFS_CO(Window); + lpsi->fMask &= ~SIF_THEMED; // Remove Theme bit if(!SBID_IS_VALID(nBar)) { EngSetLastError(ERROR_INVALID_PARAMETER); @@ -334,6 +335,7 @@ NEWco_IntGetScrollInfo( UINT Mask; PSBTRACK pSBTrack = pWnd->head.pti->pSBTrack; + lpsi->fMask &= ~SIF_THEMED; // Remove Theme bit if (!SBID_IS_VALID(nBar)) { EngSetLastError(ERROR_INVALID_PARAMETER); @@ -511,7 +513,7 @@ co_IntSetScrollInfo(PWND Window, INT nBar, LPCSCROLLINFO lpsi, BOOL bRedraw) EngSetLastError(ERROR_INVALID_PARAMETER); return 0; } - if (lpsi->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL | SIF_PREVIOUSPOS)) + if ((lpsi->fMask & ~SIF_THEMED) & ~(SIF_ALL | SIF_DISABLENOSCROLL | SIF_PREVIOUSPOS)) { EngSetLastError(ERROR_INVALID_PARAMETER); return 0; @@ -611,7 +613,7 @@ co_IntSetScrollInfo(PWND Window, INT nBar, LPCSCROLLINFO lpsi, BOOL bRedraw) } } else /* Show and enable scroll-bar only if no page only changed. */ - if (lpsi->fMask != SIF_PAGE) + if ((lpsi->fMask & ~SIF_THEMED) != SIF_PAGE) { if ((nBar != SB_CTL) && bChangeParams) { @@ -643,20 +645,49 @@ co_IntSetScrollInfo(PWND Window, INT nBar, LPCSCROLLINFO lpsi, BOOL bRedraw) return lpsi->fMask & SIF_PREVIOUSPOS ? OldPos : pSBData->pos; /* SetWindowPos() already did the painting */ if (bRedraw) { - if (action & SA_SSI_REPAINT_ARROWS) - { // Redraw the entire bar. + if (!(lpsi->fMask & SIF_THEMED)) /* Not Using Themes */ + { + TRACE("Not using themes.\n"); + if (action & SA_SSI_REPAINT_ARROWS) + { + // Redraw the entire bar. + RECTL UpdateRect = psbi->rcScrollBar; + UpdateRect.left -= Window->rcClient.left - Window->rcWindow.left; + UpdateRect.right -= Window->rcClient.left - Window->rcWindow.left; + UpdateRect.top -= Window->rcClient.top - Window->rcWindow.top; + UpdateRect.bottom -= Window->rcClient.top - Window->rcWindow.top; + co_UserRedrawWindow(Window, &UpdateRect, 0, RDW_INVALIDATE | RDW_FRAME); + } + else + { + // Redraw only the interior part of the bar. + IntRefeshScrollInterior(Window, nBar, psbi); + } + } + else /* Using Themes */ + { RECTL UpdateRect = psbi->rcScrollBar; + TRACE("Using themes.\n"); UpdateRect.left -= Window->rcClient.left - Window->rcWindow.left; UpdateRect.right -= Window->rcClient.left - Window->rcWindow.left; UpdateRect.top -= Window->rcClient.top - Window->rcWindow.top; UpdateRect.bottom -= Window->rcClient.top - Window->rcWindow.top; + /* Just paint the interior and not the arrows. */ + if (!(action & SA_SSI_REPAINT_ARROWS)) + { + if (nBar == SB_HORZ) + { + UpdateRect.left += psbi->dxyLineButton; + UpdateRect.right -= psbi->dxyLineButton; + } + if (nBar == SB_VERT) + { + UpdateRect.top += psbi->dxyLineButton; + UpdateRect.bottom -= psbi->dxyLineButton; + } + } co_UserRedrawWindow(Window, &UpdateRect, 0, RDW_INVALIDATE | RDW_FRAME); } - else - { - // Redraw only the interior part of the bar. - IntRefeshScrollInterior(Window, nBar, psbi); - } } // FIXME: Arrows /* else if( action & SA_SSI_REPAINT_ARROWS ) {
