void ConvertToPARGB32(HDC hdc, ARGB *pargb, HBITMAP hbmp, SIZE& sizImage, int cxRow)
{
BITMAPINFO bmi;
InitBitmapInfo(bmi, sizImage);
void *pvBits = malloc(sizImage.cx * 4 * sizImage.cy);
if (GetDIBits(hdc, hbmp, 0, bmi.bmiHeader.biHeight, pvBits, &bmi, DIB_RGB_COLORS) == bmi.bmiHeader.biHeight)
{
ULONG cxDelta = cxRow - bmi.bmiHeader.biWidth;
ARGB *pargbMask = (ARGB *)pvBits;
for (ULONG y = bmi.bmiHeader.biHeight + 1; --y; )
{
for (ULONG x = bmi.bmiHeader.biWidth + 1; --x; )
{
if (*pargbMask++)
{
// transparent pixel
*pargb++ = 0;
}
else
{
// opaque pixel
*pargb++ |= 0xFF000000;
}
}
pargb += cxDelta;
}
}
free(pvBits);
}
IplImage *CCamOpenCV::CaptureImage()
{
if (_capture) {
if (cvGrabFrame(_capture)) {
IplImage *cvImage = cvRetrieveFrame(_capture);
if (cvImage &&
cvImage->width != _bitmapInfo.bmiHeader.biWidth &&
cvImage->height != _bitmapInfo.bmiHeader.biHeight) {
InitBitmapInfo(cvImage->width, cvImage->height, cvImage->widthStep / cvImage->width);
}
return cvImage;
}
}
return NULL;
}
HRESULT Create32BitHBITMAP(HDC hdc, const SIZE *psize, void **ppvBits, HBITMAP* phBmp)
{
*phBmp = NULL;
BITMAPINFO bmi;
InitBitmapInfo(&bmi, sizeof(bmi), psize->cx, psize->cy, 32);
HDC hdcUsed = hdc ? hdc : GetDC(NULL);
if (hdcUsed)
{
*phBmp = CreateDIBSection(hdcUsed, &bmi, DIB_RGB_COLORS, ppvBits, NULL, 0);
if (hdc != hdcUsed)
{
ReleaseDC(NULL, hdcUsed);
}
}
return (NULL == *phBmp) ? E_OUTOFMEMORY : S_OK;
}
///////////////////////////////////////////////////////////////////////////////////////
// private helper for IconToPARGB32Bitmap
BOOL ConvertToPARGB32(HDC hdc, ARGB *pargb, HBITMAP hbmp, SIZE& sizImage, int cxRow)
{
BOOL bSuccess = FALSE;
BITMAPINFO bmi = { 0 };
InitBitmapInfo(&bmi, sizeof(bmi), sizImage.cx, sizImage.cy, 32);
HANDLE hHeap = GetProcessHeap();
void *pvBits = HeapAlloc(hHeap, 0, bmi.bmiHeader.biWidth * 4 * bmi.bmiHeader.biHeight);
if (pvBits)
{
if (GetDIBits(hdc, hbmp, 0, bmi.bmiHeader.biHeight, pvBits, &bmi, DIB_RGB_COLORS) == bmi.bmiHeader.biHeight)
{
ULONG cxDelta = (cxRow - bmi.bmiHeader.biWidth);
ARGB *pargbMask = static_cast<ARGB *>(pvBits);
for (ULONG y = bmi.bmiHeader.biHeight; y; --y)
{
for (ULONG x = bmi.bmiHeader.biWidth; x; --x)
{
if (*pargbMask++)
{
// transparent pixel
*pargb++ = 0;
}
else
{
// opaque pixel
*pargb++ |= 0xFF000000;
}
}
pargb += cxDelta;
}
bSuccess = TRUE;
}
HeapFree(hHeap, 0, pvBits);
}
return bSuccess;
}
HRESULT ConvertToPARGB32(HDC hdc, ARGB *pargb, HBITMAP hbmp, SIZE& sizImage, int cxRow)
{
BITMAPINFO bmi;
InitBitmapInfo(&bmi, sizeof(bmi), sizImage.cx, sizImage.cy, 32);
HRESULT hr = E_OUTOFMEMORY;
HANDLE hHeap = GetProcessHeap();
void *pvBits = HeapAlloc(hHeap, 0, bmi.bmiHeader.biWidth * 4 * bmi.bmiHeader.biHeight);
if (pvBits)
{
hr = E_UNEXPECTED;
if (GetDIBits(hdc, hbmp, 0, bmi.bmiHeader.biHeight, pvBits, &bmi, DIB_RGB_COLORS) == bmi.bmiHeader.biHeight)
{
ULONG cxDelta = cxRow - bmi.bmiHeader.biWidth;
ARGB *pargbMask = static_cast<ARGB *>(pvBits);
for (ULONG y = bmi.bmiHeader.biHeight; y; --y)
{
for (ULONG x = bmi.bmiHeader.biWidth; x; --x)
{
if (*pargbMask++)
{
// transparent pixel
*pargb++ = 0;
}
else
{
// opaque pixel
*pargb++ |= 0xFF000000;
}
}
pargb += cxDelta;
}
hr = S_OK;
}
HeapFree(hHeap, 0, pvBits);
}
return hr;
}
HBITMAP ConvertIconToBitmap(HICON hicon, HIMAGELIST hIml, int iconId)
{
SIZE sizIcon;
sizIcon.cx = GetSystemMetrics(SM_CXSMICON);
sizIcon.cy = GetSystemMetrics(SM_CYSMICON);
RECT rcIcon = { 0, 0, sizIcon.cx, sizIcon.cy };
HDC hdc = CreateCompatibleDC(NULL);
BITMAPINFO bmi;
InitBitmapInfo(bmi, sizIcon);
HBITMAP hbmp = CreateDIBSection(hdc, &bmi, DIB_RGB_COLORS, NULL, NULL, 0);
HBITMAP hbmpOld = (HBITMAP)SelectObject(hdc, hbmp);
BLENDFUNCTION bfAlpha = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
BP_PAINTPARAMS paintParams = {0};
paintParams.cbSize = sizeof(paintParams);
paintParams.dwFlags = BPPF_ERASE;
paintParams.pBlendFunction = &bfAlpha;
HDC hdcBuffer;
HANDLE hPaintBuffer = beginBufferedPaint(hdc, &rcIcon, BPBF_DIB, &paintParams, &hdcBuffer);
if (hPaintBuffer)
{
if (hIml)
ImageList_Draw(hIml, iconId, hdc, 0, 0, ILD_TRANSPARENT);
else
DrawIconEx(hdcBuffer, 0, 0, hicon, sizIcon.cx, sizIcon.cy, 0, NULL, DI_NORMAL);
// If icon did not have an alpha channel we need to convert buffer to PARGB
ConvertBufferToPARGB32(hPaintBuffer, hdc, hicon, sizIcon);
// This will write the buffer contents to the destination bitmap
endBufferedPaint(hPaintBuffer, TRUE);
}
SelectObject(hdc, hbmpOld);
DeleteDC(hdc);
return hbmp;
}
///////////////////////////////////////////////////////////////////////////////////////
// private helper for IconToPARGB32Bitmap
BOOL Create32BitHBITMAP(HDC hdc, const SIZE *psize, void **ppvBits, HBITMAP* phBmp)
{
*phBmp = NULL;
BITMAPINFO bmi = { 0 };
InitBitmapInfo(&bmi, sizeof(bmi), psize->cx, psize->cy, 32);
HDC hdcUsed = (hdc ? hdc : ::GetDC(NULL));
if (hdcUsed)
{
*phBmp = CreateDIBSection(hdcUsed, &bmi, DIB_RGB_COLORS, ppvBits, NULL, 0);
if (hdc != hdcUsed)
{
::ReleaseDC(NULL, hdcUsed);
}
}
return (NULL != *phBmp);
}
void duTreeCtrl::DrawObject(HDC hDC)
{
duRect rcTreeCtrl;
Plugin_GetRect(this, &rcTreeCtrl);
rcTreeCtrl.OffsetRect(-rcTreeCtrl.left, -rcTreeCtrl.top);
BITMAPINFO bmInfo;
BYTE *pBits;
HDC hMemDC = ::CreateCompatibleDC(hDC);
InitBitmapInfo(&bmInfo, rcTreeCtrl.Width(), rcTreeCtrl.Height());
HBITMAP hBmp = ::CreateDIBSection(hDC, &bmInfo, DIB_RGB_COLORS,(void**)&pBits, 0, 0);
HBITMAP hOldBitmap = (HBITMAP)::SelectObject(hMemDC, hBmp);
BLENDFUNCTION bf = {AC_SRC_OVER, 0, 255, AC_SRC_ALPHA};
::AlphaBlend(hMemDC, 0, 0, rcTreeCtrl.Width(), rcTreeCtrl.Height(), hDC, 0, 0, rcTreeCtrl.Width(), rcTreeCtrl.Height(), bf);
duStyleGroup *pStyleGroup = (duStyleGroup *)GetResObj(GetStyle(), DU_RES_STYLEGROUP);
if (pStyleGroup)
pStyleGroup->Draw(hMemDC, &rcTreeCtrl, GetState(), NULL, GetAlpha());
int nOffsetY = 0;
TreeCtrlItem *pFirstVisible = GetFirstVisibleItem(nOffsetY);
if (pFirstVisible == NULL || pFirstVisible == m_pRoot)
return;
duRect rcClient = _GetClientRect();
POINT ptView = GetViewPoint();
duFont *pFont = (duFont *)GetResObj(m_szFont, DU_RES_FONT);
duSize sizeView;
GetViewSize(&sizeView);
int nDrawHeight = -nOffsetY;
TreeCtrlItem *pItem = pFirstVisible;
while (pItem)
{
duRect rcItem;
rcItem.left = -ptView.x;
rcItem.right = rcClient.right;
rcItem.top = nDrawHeight;
rcItem.bottom = rcItem.top + m_nItemHeight;
UINT uItemState = DU_STATE_NORMAL;
if (pItem == m_pHot)
uItemState = DU_STATE_OVER;
if (pItem == m_pSelect)
uItemState = DU_STATE_PRESS;
DrawByStyle(this, m_szItemStyle, hMemDC, &rcItem, uItemState, NULL, GetAlpha());
// draw indent[-+]
int nLeft = (pItem->nLevel - 1) * m_nIndentWidth;
duRect rcIndent = CalcVCenterRect(rcItem, nLeft, m_nIndentWidth, m_nIndentHeight);
if (ItemHasChildren(pItem))
{
UINT nIndentState = pItem->fExpand ? DU_STATE_NORMAL : DU_STATE_CHECKED;
DrawByStyle(this, m_szIndentStyle, hMemDC, &rcIndent, nIndentState, NULL, GetAlpha());
}
// draw icon
nLeft += (m_nIndentWidth + m_nIndentIconSpace);
duRect rcIcon = CalcVCenterRect(rcItem, nLeft, m_nIconWidth, m_nIconHeight);
duImage *pIcon = (duImage *)GetResObj(pItem->strImage.c_str(), DU_RES_IMAGE);
if (pIcon)
DrawNormal(hMemDC, rcIcon.left, rcIcon.top, rcIcon.Width(), rcIcon.Height(), pIcon, 0, 0, GetAlpha());
// draw text
duRect rcText;
nLeft += (m_nIconWidth + m_nIconTextSpace);
rcText = rcItem;
rcText.left = rcItem.left + nLeft;
if (pItem->strText.length() > 0)
DrawText32Bpp(hMemDC, pFont, m_clrText, pItem->strText.c_str(), pItem->strText.length(), &rcText, DT_LEFT|DT_VCENTER|DT_SINGLELINE, GetAlpha());
if (nDrawHeight - nOffsetY > rcTreeCtrl.Height())
break;
nDrawHeight += m_nItemHeight;
pItem = GetNextVisibleItem(pItem);
}
::AlphaBlend(hDC, 0, 0, rcTreeCtrl.Width(), rcTreeCtrl.Height(), hMemDC, 0, 0, rcTreeCtrl.Width(), rcTreeCtrl.Height(), bf);
::SelectObject(hMemDC, hOldBitmap);
::DeleteObject(hBmp);
::DeleteDC(hMemDC);
}
