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[MSPAINT] Implement skew (#4362)

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- Add SkewDIB helper function in dib.cpp.
- Implement Stretch and Skew feature by SelectionModel::StretchSkew and ImageModel::StretchSkew.
- Move ColorKeyedMaskBlt function.
CORE-16634
This commit is contained in:
Katayama Hirofumi MZ
2022-02-14 16:18:18 +09:00
committed by GitHub
parent 2d90919047
commit dfd06ee8fc
9 changed files with 165 additions and 39 deletions
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33
base/applications/mspaint/selection.cpp
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@@ -21,39 +21,6 @@ const LPCTSTR CSelectionWindow::m_lpszCursorLUT[9] = { /* action to mouse cursor
IDC_SIZENESW, IDC_SIZENS, IDC_SIZENWSE
};
BOOL
ColorKeyedMaskBlt(HDC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight,
HDC hdcSrc, int nXSrc, int nYSrc, HBITMAP hbmMask, int xMask, int yMask,
DWORD dwRop, COLORREF keyColor)
{
HDC hTempDC;
HDC hTempDC2;
HBITMAP hTempBm;
HBRUSH hTempBrush;
HBITMAP hTempMask;
hTempDC = CreateCompatibleDC(hdcSrc);
hTempDC2 = CreateCompatibleDC(hdcSrc);
hTempBm = CreateCompatibleBitmap(hTempDC, nWidth, nHeight);
SelectObject(hTempDC, hTempBm);
hTempBrush = CreateSolidBrush(keyColor);
SelectObject(hTempDC, hTempBrush);
BitBlt(hTempDC, 0, 0, nWidth, nHeight, hdcSrc, nXSrc, nYSrc, SRCCOPY);
PatBlt(hTempDC, 0, 0, nWidth, nHeight, PATINVERT);
hTempMask = CreateBitmap(nWidth, nHeight, 1, 1, NULL);
SelectObject(hTempDC2, hTempMask);
BitBlt(hTempDC2, 0, 0, nWidth, nHeight, hTempDC, 0, 0, SRCCOPY);
SelectObject(hTempDC, hbmMask);
BitBlt(hTempDC2, 0, 0, nWidth, nHeight, hTempDC, xMask, yMask, SRCAND);
MaskBlt(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc, hTempMask, xMask, yMask, dwRop);
DeleteDC(hTempDC);
DeleteDC(hTempDC2);
DeleteObject(hTempBm);
DeleteObject(hTempBrush);
DeleteObject(hTempMask);
return TRUE;
}
void CSelectionWindow::ForceRefreshSelectionContents()
{
if (::IsWindowVisible(selectionWindow))