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Fixed GDI clipping issues

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This commit is contained in:
narzoul 2016-04-03 17:02:00 +02:00
parent c78c7c927f
commit 2d30ff6f94
1 changed files with 31 additions and 45 deletions
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76
DDrawCompat/CompatGdiDc.cpp
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@ -16,9 +16,7 @@ namespace
CompatDc(const CachedDc& cachedDc = {}) : CachedDc(cachedDc) {}
DWORD refCount;
HDC origDc;
HGDIOBJ origFont;
HGDIOBJ origBrush;
HGDIOBJ origPen;
int savedState;
};
typedef std::unordered_map<HDC, CompatDc> CompatDcMap;
@ -27,15 +25,14 @@ namespace
struct ExcludeClipRectsData
{
HDC compatDc;
POINT origin;
HWND rootWnd;
};
void copyDcAttributes(CompatDc& compatDc, HDC origDc, POINT& origin)
{
compatDc.origFont = SelectObject(compatDc.dc, GetCurrentObject(origDc, OBJ_FONT));
compatDc.origBrush = SelectObject(compatDc.dc, GetCurrentObject(origDc, OBJ_BRUSH));
compatDc.origPen = SelectObject(compatDc.dc, GetCurrentObject(origDc, OBJ_PEN));
SelectObject(compatDc.dc, GetCurrentObject(origDc, OBJ_FONT));
SelectObject(compatDc.dc, GetCurrentObject(origDc, OBJ_BRUSH));
SelectObject(compatDc.dc, GetCurrentObject(origDc, OBJ_PEN));
if (GM_ADVANCED == GetGraphicsMode(origDc))
{
@ -44,11 +41,6 @@ namespace
GetWorldTransform(origDc, &transform);
SetWorldTransform(compatDc.dc, &transform);
}
else if (GM_COMPATIBLE != GetGraphicsMode(compatDc.dc))
{
ModifyWorldTransform(compatDc.dc, nullptr, MWT_IDENTITY);
SetGraphicsMode(compatDc.dc, GM_COMPATIBLE);
}
SetMapMode(compatDc.dc, GetMapMode(origDc));
@ -101,17 +93,19 @@ namespace
return TRUE;
}
RECT rect = {};
GetWindowRect(hwnd, &rect);
OffsetRect(&rect, -excludeClipRectsData->origin.x, -excludeClipRectsData->origin.y);
ExcludeClipRect(excludeClipRectsData->compatDc, rect.left, rect.top, rect.right, rect.bottom);
RECT windowRect = {};
GetWindowRect(hwnd, &windowRect);
HRGN windowRgn = CreateRectRgnIndirect(&windowRect);
ExtSelectClipRgn(excludeClipRectsData->compatDc, windowRgn, RGN_DIFF);
DeleteObject(windowRgn);
return TRUE;
}
void excludeClipRectsForOverlappingWindows(
HWND hwnd, bool isMenuWindow, HDC compatDc, const POINT& origin)
void excludeClipRectsForOverlappingWindows(HWND hwnd, bool isMenuWindow, HDC compatDc)
{
ExcludeClipRectsData excludeClipRectsData = { compatDc, origin, GetAncestor(hwnd, GA_ROOT) };
ExcludeClipRectsData excludeClipRectsData = { compatDc, GetAncestor(hwnd, GA_ROOT) };
if (!isMenuWindow)
{
EnumWindows(&excludeClipRectForOverlappingWindow,
@ -129,35 +123,28 @@ namespace
void setClippingRegion(HDC compatDc, HDC origDc, HWND hwnd, bool isMenuWindow, const POINT& origin)
{
if (isMenuWindow)
HRGN clipRgn = CreateRectRgn(0, 0, 0, 0);
if (1 == GetClipRgn(origDc, clipRgn))
{
RECT windowRect = {};
GetWindowRect(hwnd, &windowRect);
HRGN windowRgn = CreateRectRgnIndirect(&windowRect);
SelectClipRgn(compatDc, windowRgn);
DeleteObject(windowRgn);
}
else
{
HRGN clipRgn = CreateRectRgn(0, 0, 0, 0);
const bool isEmptyClipRgn = 1 != GetRandomRgn(origDc, clipRgn, SYSRGN);
SelectClipRgn(compatDc, isEmptyClipRgn ? nullptr : clipRgn);
DeleteObject(clipRgn);
HRGN origClipRgn = CreateRectRgn(0, 0, 0, 0);
if (1 == GetClipRgn(origDc, origClipRgn))
{
OffsetRgn(origClipRgn, origin.x, origin.y);
ExtSelectClipRgn(compatDc, origClipRgn, RGN_AND);
}
DeleteObject(origClipRgn);
OffsetRgn(clipRgn, origin.x, origin.y);
SelectClipRgn(compatDc, clipRgn);
}
if (hwnd)
{
excludeClipRectsForOverlappingWindows(hwnd, isMenuWindow, compatDc, origin);
if (isMenuWindow || 1 != GetRandomRgn(origDc, clipRgn, SYSRGN))
{
RECT rect = {};
GetWindowRect(hwnd, &rect);
SetRectRgn(clipRgn, rect.left, rect.top, rect.right, rect.bottom);
}
excludeClipRectsForOverlappingWindows(hwnd, isMenuWindow, compatDc);
ExtSelectClipRgn(compatDc, clipRgn, RGN_AND);
}
DeleteObject(clipRgn);
SetMetaRgn(compatDc);
}
}
@ -195,6 +182,7 @@ namespace CompatGdiDc
POINT origin = {};
GetDCOrgEx(origDc, &origin);
compatDc.savedState = SaveDC(compatDc.dc);
copyDcAttributes(compatDc, origDc, origin);
setClippingRegion(compatDc.dc, origDc, hwnd, isMenuWindow, origin);
@ -226,9 +214,7 @@ namespace CompatGdiDc
--compatDc.refCount;
if (0 == compatDc.refCount)
{
SelectObject(compatDc.dc, compatDc.origFont);
SelectObject(compatDc.dc, compatDc.origBrush);
SelectObject(compatDc.dc, compatDc.origPen);
RestoreDC(compatDc.dc, compatDc.savedState);
CompatGdiDcCache::releaseDc(compatDc);
g_origDcToCompatDc.erase(origDc);
}