[ros-diffs] [tkreuzer] 26840: fix drawing on resize

Author: tkreuzer
Date: Sat May 19 18:23:00 2007
New Revision: 26840

URL: http://svn.reactos.org/svn/reactos?rev=26840&view=rev
Log:
fix drawing on resize

Modified:
    trunk/rosapps/fontview/display.c

Modified: trunk/rosapps/fontview/display.c
URL: http://svn.reactos.org/svn/reactos/trunk/rosapps/fontview/display.c?rev=2684...
==============================================================================
--- trunk/rosapps/fontview/display.c (original)
+++ trunk/rosapps/fontview/display.c Sat May 19 18:23:00 2007
@@ -178,7 +178,7 @@

BeginPaint(hwnd, &ps);

-	/* fill with white */
+	/* Fill with white */
    FillRect(ps.hdc, &ps.rcPaint, GetStockObject(WHITE_BRUSH));

/* Draw the text */
@@ -193,17 +193,34 @@
 Display_OnSize(HWND hwnd)
 {
    RECT rect;
-	SCROLLINFO si; 
+	SCROLLINFO si;
+	int nOldPos;

GetClientRect(hwnd, &rect);

+	/* Get the old pos */
+	si.cbSize = sizeof(si);
+	si.fMask  = SIF_POS;
+	GetScrollInfo(hwnd, SB_VERT, &si);
+	nOldPos = si.nPos;
+
    /* Set the new page size */
-	si.cbSize = sizeof(si);
    si.fMask  = SIF_PAGE;
    si.nPage  = rect.bottom;
-	SetScrollInfo(hwnd, SB_VERT, &si, TRUE); 
-// FIXME: handle exceeding of current pos -> redraw entire window
-// if new page size is < curent pos: current pos = maximum whatever and then redraw
+	SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
+
+	/* Get the new pos */
+	si.fMask  = SIF_POS;
+	GetScrollInfo(hwnd, SB_VERT, &si);
+
+	/* If the don't match ... */
+	if (nOldPos != si.nPos)
+	{
+		/* ... scroll the window */
+		ScrollWindowEx(hwnd, 0, -(si.nPos - nOldPos), NULL, NULL, NULL, NULL, SW_INVALIDATE);
+		UpdateWindow(hwnd);
+	}
+
    return 0;
 }

@@ -231,7 +248,7 @@
    	case SB_LINEDOWN:
    		nPos = si.nPos + 10;
    		break;
-//		case SB_THUMBTRACK:
+		case SB_THUMBTRACK:
    	case SB_THUMBPOSITION:
    		nPos = si.nTrackPos;
    		break;