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Fixed the Windows Table reimplementation's redraw issues. Thanks again to Jonathan Potter (http://stackoverflow.com/a/26747199/3408572).

This commit is contained in:
Pietro Gagliardi 2014-11-06 19:47:38 -05:00
parent 0b36a87713
commit 130e139806
1 changed files with 14 additions and 18 deletions
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32
wintable/main.c
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@ -392,7 +392,6 @@ static void drawItems(struct table *t, HDC dc, RECT cliprect)
intptr_t i;
RECT controlSize; // for filling the entire selected row
intptr_t first, last;
POINT prevOrigin, prevViewportOrigin;
if (GetClientRect(t->hwnd, &controlSize) == 0)
abort();
@ -404,36 +403,33 @@ static void drawItems(struct table *t, HDC dc, RECT cliprect)
if (prevfont == NULL)
abort();
// adjust the clip rect and the window so that (0, 0) is always the first item
// adjust the viewport so that everything is shifted down t->headerHeight pixels
if (OffsetRect(&cliprect, 0, t->firstVisible * height) == 0)
abort();
if (GetWindowOrgEx(dc, &prevOrigin) == 0)
abort();
if (SetWindowOrgEx(dc, prevOrigin.x, prevOrigin.y + (t->firstVisible * height), NULL) == 0)
abort();
if (SetViewportOrgEx(dc, 0, t->headerHeight, &prevViewportOrigin) == 0)
abort();
// ignore anything beneath the header
if (cliprect.top < t->headerHeight)
cliprect.top = t->headerHeight;
// now let's pretend the header isn't there
// we only need it in (or rather, before) the drawItem() calls below
cliprect.top -= t->headerHeight;
cliprect.bottom -= t->headerHeight;
// see http://blogs.msdn.com/b/oldnewthing/archive/2003/07/29/54591.aspx and http://blogs.msdn.com/b/oldnewthing/archive/2003/07/30/54600.aspx
first = cliprect.top / height;
// we need to add t->firstVisible here because cliprect is relative to the visible area
first = (cliprect.top / height) + t->firstVisible;
if (first < 0)
first = 0;
last = (cliprect.bottom + height - 1) / height;
last = ((cliprect.bottom + height - 1) / height) + t->firstVisible;
if (last >= t->count)
last = t->count;
y = first * height;
// now for the first y, discount firstVisible
y = (first - t->firstVisible) * height;
// and offset by the header height
y += t->headerHeight;
for (i = first; i < last; i++) {
drawItem(t, dc, i, y, height, controlSize);
y += height;
}
// reset everything
if (SetViewportOrgEx(dc, prevViewportOrigin.x, prevViewportOrigin.y, NULL) == 0)
abort();
if (SetWindowOrgEx(dc, prevOrigin.x, prevOrigin.y, NULL) == 0)
abort();
if (SelectObject(dc, prevfont) != (HGDIOBJ) (thisfont))
abort();
}