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[WIN32SS] Improve Drawing Scrollbars

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A very nice patch of JIRA user "I_kill_Bugs". Many many Thanks!

It addresses:
- CORE-14755 fixed, flashing scrollbar triangles (we know 131 affected apps just from rapps!)
- CORE-13931 fixed, FamiTracker invisible about-dlg
- CORE-14685 improves a bit, but is not entirely fixed
- CORE-11561 improves a bit, but is not entirely fixed
- The patch avoids unnecessary redraws, speeds up GUI interaction and NSIS install times

Jim Tabor had no complains about it, I just did some white-space-tweaks on EOL and indentation.

FTR A testbot run (not on master but on 0.4.13-RC-48-g818e5bc)
https://reactos.org/testman/compare.php?ids=71645,71666 VBox LGTM
https://reactos.org/testman/compare.php?ids=71646,71667 KVM LGTM

I felt tempted to port back, but decided to play safe and commit to master just.
This commit is contained in:
Joachim Henze 2020-03-04 02:12:06 +01:00
parent 6831468ccf
commit 00adb1a3f9
1 changed files with 33 additions and 7 deletions
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40
win32ss/user/ntuser/scrollbar.c
View file

@ -61,6 +61,9 @@ DBG_DEFAULT_CHANNEL(UserScrollbar);
BOOL APIENTRY
IntEnableScrollBar(BOOL Horz, PSCROLLBARINFO Info, UINT wArrows);
static void
IntRefeshScrollInterior(PWND pWnd, INT nBar, PSCROLLBARINFO psbi);
/* Ported from WINE20020904 */
/* Compute the scroll bar rectangle, in drawing coordinates (i.e. client coords for SB_CTL, window coords for SB_VERT and
@ -636,13 +639,21 @@ co_IntSetScrollInfo(PWND Window, INT nBar, LPCSCROLLINFO lpsi, BOOL bRedraw)
if ( co_UserShowScrollBar(Window, nBar, TRUE, TRUE) )
return lpsi->fMask & SIF_PREVIOUSPOS ? OldPos : pSBData->pos; /* SetWindowPos() already did the painting */
if (bRedraw)
{ // FIXME: Arrows and interior.
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);
{
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);
}
} // FIXME: Arrows
/* else if( action & SA_SSI_REPAINT_ARROWS )
{
@ -1069,6 +1080,21 @@ IntScrollGetObjectId(INT SBType)
return OBJID_CLIENT;
}
static void
IntRefeshScrollInterior(PWND pWnd, INT nBar, PSCROLLBARINFO psbi)
{
HDC hdc;
BOOL Vertical = ((nBar == SB_CTL) ? ((pWnd->style & SBS_VERT) != 0) : (nBar == SB_VERT));
hdc = UserGetDCEx(pWnd, NULL, DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW));
if (hdc)
{ /* Get updated info. */
co_IntGetScrollBarInfo(pWnd, IntScrollGetObjectId(nBar), psbi);
IntDrawScrollInterior(pWnd, hdc, nBar, Vertical, psbi);
UserReleaseDC(pWnd, hdc, FALSE);
}
}
void
IntDrawScrollBar(PWND Wnd, HDC DC, INT Bar)
{