///this function is called when the own slide position has change or the value has been set externally by SetValue
void wxMoColourLevelCtrl::ChangeValue( int value ) {
if (value<=m_min) value = m_min;
if (value>m_max) value = m_max;
this->m_value = value;
///here we do propagate!!!
switch( m_ColourChannel ) {
case RED:
SetRedValue(m_value, true);
break;
case GREEN:
SetGreenValue(m_value, true);
break;
case BLUE:
SetBlueValue(m_value, true);
break;
case ALPHA:
SetAlphaValue(m_value, true);
break;
case HUE:
SetHueValue(m_value, true);
break;
case SATURATION:
SetSaturationValue(m_value, true);
break;
case VALUE:
SetValueValue(m_value, true);
break;
default:
break;
}
Refresh();
}
void BitBltMergeLayers(HDC hdcDest, int nWidth, int nHeight, HDC hdcSrc, HWND hWnd)
{
if (hdcSrc && hdcDest)
{
if (hWnd->exstyle & WS_EX_LAYERED)
{
DWORD alphaValue;
POINT ptDelta = {0,0};
ptDelta.x = hWnd->winrect.left - hdcDest->pt.x;
ptDelta.y = hWnd->winrect.top - hdcDest->pt.y;
/*transparency enabled using color key crKey*/
if (hWnd->dwFlags & LWA_COLORKEY)
{
/* mask the color key's most significant byte to 0*/
COLORREF ColorKey = hWnd->crKey & ~MWROP_EXTENSION;
if (hWnd->dwFlags & LWA_ALPHA)
{
SetAlphaValue(hWnd->bAlpha);
BitBlt(hdcDest, ptDelta.x, ptDelta.y, nWidth, nHeight, hdcSrc, 0, 0, MWROP_BLENDTRANS | ColorKey);
}
else
{
BitBlt(hdcDest, ptDelta.x, ptDelta.y, nWidth, nHeight, hdcSrc, 0, 0, MWROP_SRCTRANSCOPY | ColorKey);
}
}
else
{
alphaValue = (hWnd->dwFlags & LWA_ALPHA) ? (MWROP_BLENDCONSTANT | hWnd->bAlpha) : SRCCOPY;
if (isLayeredParentWindow(hWnd))
{
HRGN hrgn, tempHrgn;
RECT clientRect, tempRect;
POINT clientOrigin;
HWND wp = NULL;
GetClientRect(currentTargetHWnd, &clientRect);
hrgn = CreateRectRgnIndirect(&clientRect);
/*store screen coordinates of client window for offset*/
clientOrigin.x = currentTargetHWnd->winrect.left;
clientOrigin.y = currentTargetHWnd->winrect.top;
/* start with entire client area for clip region,
* we then cut out regions occupied by child windows*/
SelectClipRgn(hdcDest, hrgn);
/* traverse immediate children to build clip rectangles.
* First we call show immediate children to enable
* clipping on children for one hide level, check the
* clipping to add subtract from clientrect, then disable
* back clipping before returning to recursive call
*/
ShowImmediateChildWindows(hWnd);
for (wp = hWnd->children; wp; wp=wp->siblings)
{
if (wp->unmapcount == 0)
{
tempRect.left = wp->winrect.left - clientOrigin.x;
tempRect.right = wp->winrect.right - clientOrigin.x;
tempRect.top = wp->winrect.top - clientOrigin.y;
tempRect.bottom = wp->winrect.bottom - clientOrigin.y;
tempHrgn = CreateRectRgnIndirect(&tempRect);
ExtSelectClipRgn(hdcDest, tempHrgn, RGN_DIFF);
DeleteObject(tempHrgn);
}
}
HideImmediateChildWindows(hWnd);
BitBlt(hdcDest, ptDelta.x, ptDelta.y, nWidth, nHeight, hdcSrc, 0, 0, alphaValue);
SelectClipRgn(hdcDest, NULL);
DeleteObject(hrgn);
}
else
{
BitBlt(hdcDest, ptDelta.x, ptDelta.y, nWidth, nHeight, hdcSrc, 0, 0, alphaValue);
}
}
}
else
{
BitBlt(hdcDest, 0, 0, nWidth, nHeight, hdcSrc, 0, 0, SRCCOPY);
}
}
}
