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Added what should have been the flicker-free code to Windows containers; it doesn't actually work 100%, though (not flicker-free; window backgrounds are now black), so it's #ifdef'd out for now.

This commit is contained in:
Pietro Gagliardi 2014-08-07 11:27:00 -04:00
parent ddbb719918
commit 6707839e9b
1 changed files with 40 additions and 0 deletions
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40
redo/container_windows.c
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@ -38,6 +38,7 @@ static LRESULT CALLBACK containerWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LP
case WM_NOTIFY: case WM_NOTIFY:
return forwardNotify(hwnd, uMsg, wParam, lParam); return forwardNotify(hwnd, uMsg, wParam, lParam);
case WM_PAINT: case WM_PAINT:
#ifndef BROKEN
/* paint the parent's background in a flicker-free way */ /* paint the parent's background in a flicker-free way */
dc = BeginPaint(hwnd, &ps); dc = BeginPaint(hwnd, &ps);
if (dc == NULL) if (dc == NULL)
@ -57,6 +58,45 @@ static LRESULT CALLBACK containerWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LP
SendMessageW(parent, WM_PRINTCLIENT, (WPARAM) dc, PRF_CLIENT); SendMessageW(parent, WM_PRINTCLIENT, (WPARAM) dc, PRF_CLIENT);
EndPaint(hwnd, &ps); EndPaint(hwnd, &ps);
return 0; return 0;
#else
/* paint the parent's background in a flicker-free way */
dc = BeginPaint(hwnd, &ps);
if (dc == NULL)
abort();//TODO
parent = GetParent(hwnd);
if (parent == NULL)
abort();//TODO
if (GetWindowRect(hwnd, &r) == 0)
abort();//TODO
/* GetWindowRect() returns in screen coordinates; we want parent client */
client.x = r.left;
client.y = r.top;
if (ScreenToClient(parent, &client) == 0)
abort();//TODO
rdc = CreateCompatibleDC(dc);
if (rdc == NULL)
abort();//TODO
rbitmap = CreateCompatibleBitmap(dc, r.right - r.left, r.bottom - r.top);
if (rbitmap == NULL)
abort();//TODO
prevrbitmap = SelectObject(rdc, rbitmap);
if (prevrbitmap == NULL)
abort();//TODO
if (SetWindowOrgEx(rdc, client.x, client.y, NULL) == 0)
abort();//TODO
SendMessageW(parent, WM_PRINTCLIENT, (WPARAM) rdc, PRF_CLIENT);
if (BitBlt(dc, 0, 0, (int) (r.right - r.left), (int) (r.bottom - r.top),
rdc, 0, 0, SRCCOPY) == 0)
abort();//TODO
if (SelectObject(rdc, prevrbitmap) != rbitmap)
abort();//TODO
if (DeleteObject(rbitmap) == 0)
abort();//TODO
if (DeleteDC(rdc) == 0)
abort();//TODO
EndPaint(hwnd, &ps);
return 0;
#endif
case WM_ERASEBKGND: case WM_ERASEBKGND:
/* we paint our own background above */ /* we paint our own background above */
return 1; return 1;