// 画子控件
BOOL CControlBase::DrawSubControls(CDC &dc, CRect rcUpdate)
{
for (size_t i = 0; i < m_vecControl.size(); i++)
{
CControlBase * pControlBase = m_vecControl.at(i);
if (pControlBase && pControlBase->GetVisible())
{
pControlBase->Draw(dc, rcUpdate);
}
}
return TRUE;
}
void CControlBase::Draw(CDC &dc, CRect rcUpdate)
{
if(m_bIsVisible && !(m_rc & rcUpdate).IsRectEmpty())
{
DrawControl(dc, rcUpdate);
// 画子区域
for (size_t i = 0; i < m_vecArea.size(); i++)
{
CControlBase * pControlBase = m_vecArea.at(i);
if (pControlBase)
{
pControlBase->Draw(dc, rcUpdate);
}
}
// 画子控件
DrawSubControls(dc, rcUpdate);
}
}
void CDlgPopup::DrawWindow(CDC *pDC)
{
if(!m_bInitFinish) return;
CRect rcClient;
GetClientRect(&rcClient);
CDC MemDC;
MemDC.CreateCompatibleDC(pDC);
CBitmap memBit;
//memBit.CreateCompatibleBitmap(pDC, rcClient.Width(), rcClient.Height());
// 因为直接使用CreateCompatibleBitmap在16位颜色下会有问题,因此改为调用DuiCreateCompatibleBitmap函数
HBITMAP hMemBitmap = DuiCreateCompatibleBitmap(rcClient);
memBit.Attach(hMemBitmap);
CBitmap *pOldBit = MemDC.SelectObject(&memBit);
MemDC.SetBkMode(TRANSPARENT);
if(m_pImage)
{
Graphics graphics(MemDC);
if(m_enBackMode == enBMFrame) // 边框模式
{
DrawImageFrame(graphics, m_pImage, rcClient, 0, 0, m_sizeBKImage.cx, m_sizeBKImage.cy, m_nFrameSize);
}else
if(m_enBackMode == enBMMID) // 九宫格边框模式
{
DrawImageFrameMID(graphics, m_pImage, rcClient, 0, 0, m_sizeBKImage.cx, m_sizeBKImage.cy,
m_nFrameWLT, m_nFrameHLT, m_nFrameWRB, m_nFrameHRB);
}else // 图片模式
{
graphics.DrawImage(m_pImage, Rect(0, 0, m_sizeBKImage.cx, m_sizeBKImage.cy), 0, 0, m_sizeBKImage.cx, m_sizeBKImage.cy, UnitPixel);
}
}
else
{
MemDC.FillSolidRect(rcClient.left, rcClient.top, rcClient.Width(), rcClient.Height(), RGB(0, 147, 209));
MemDC.FillSolidRect(rcClient.left + 1, rcClient.top + 1, rcClient.Width() - 2, rcClient.Height() - 2, RGB(255, 255, 255));
}
DrawWindow(MemDC, rcClient);
DrawWindowEx(MemDC, rcClient);
for (size_t i = 0; i < m_vecArea.size(); i++)
{
CControlBase * pControlBase = m_vecArea.at(i);
if (pControlBase)
{
pControlBase->Draw(MemDC, rcClient);
}
}
for (size_t i = 0; i < m_vecControl.size(); i++)
{
CControlBase * pControlBase = m_vecControl.at(i);
if (pControlBase)
{
pControlBase->Draw(MemDC, rcClient);
}
}
ClientToScreen(&rcClient);
POINT pointDes;
pointDes.x = rcClient.left;
pointDes.y = rcClient.top;
POINT pointSrc;
pointSrc.x = 0;
pointSrc.y = 0;
SIZE sizeDes;
sizeDes.cx = rcClient.Width();
sizeDes.cy = rcClient.Height();
BLENDFUNCTION blend;
memset( &blend, 0, sizeof( blend) );
blend.AlphaFormat = AC_SRC_ALPHA ;
blend.SourceConstantAlpha = m_nBackTranslucent;
HWND hWnd = GetSafeHwnd();
SetWindowLong(hWnd,GWL_EXSTYLE, GetWindowLong(hWnd, GWL_EXSTYLE) | WS_EX_LAYERED);
// 如果允许背景Alpha通道,则根据是否有背景图片决定是否使用Aplha通道
DWORD dwFlags = 0;
if(m_bBackAlpha)
{
dwFlags = (m_pImage ? ULW_ALPHA : ULW_COLORKEY);
}
UpdateLayeredWindow(pDC, &pointDes, &sizeDes, &MemDC, &pointSrc, 0, &blend, dwFlags);
MemDC.SelectObject(pOldBit);
memBit.DeleteObject();
MemDC.DeleteDC();
}
// 画子控件(支持滚动显示)
BOOL CDuiPanel::DrawSubControls(CDC &dc, CRect rcUpdate)
{
// 如果不需要滚动条,则直接使用父控件的画图方法
if(!m_bEnableScroll || ((m_nVirtualHeight <= m_rc.Height()) && (m_nVirtualWidth <= m_rc.Width())))
{
return __super::DrawSubControls(dc, rcUpdate);
}
BOOL bShowScrollV = m_nVirtualHeight > m_rc.Height();
BOOL bShowScrollH = m_nVirtualWidth > m_rc.Width();
// 计算显示位置
CDuiScrollVertical* pScrollV = (CDuiScrollVertical*)m_pControScrollV;
int nCurPosV = pScrollV->GetScrollCurrentPos(); // 当前top位置
int nMaxRangeV = pScrollV->GetScrollMaxRange();
int nVirtualTop = (nMaxRangeV > 0) ? nCurPosV*(m_nVirtualHeight-m_rc.Height())/nMaxRangeV : 0; // 当前显示的是虚拟图片中什么位置开始的图片
CDuiScrollHorizontal* pScrollH = (CDuiScrollHorizontal*)m_pControScrollH;
int nCurPosH = pScrollH->GetScrollCurrentPos(); // 当前top位置
int nMaxRangeH = pScrollH->GetScrollMaxRange();
int nVirtualLeft = (nMaxRangeH > 0) ? nCurPosH*(m_nVirtualWidth-m_rc.Width())/nMaxRangeH : 0; // 当前显示的是虚拟图片中什么位置开始的图片
// 根据滚动条位置画子控件
// 初始化虚拟显示dc,并复制背景到虚拟显示dc
CBitmap virtualBitmap;
CDC virtualDC;
virtualDC.CreateCompatibleDC(&dc);
virtualBitmap.CreateCompatibleBitmap(&dc,
bShowScrollH ? (m_rc.left + m_nVirtualWidth) : (m_rc.right - (bShowScrollV ? m_nScrollWidth : 0)),
bShowScrollV ? (m_rc.top + m_nVirtualHeight) : (m_rc.bottom - (bShowScrollH ? m_nScrollWidth : 0)) );
CBitmap* pOldVirtualBitmap = virtualDC.SelectObject(&virtualBitmap);
virtualDC.BitBlt(m_rc.left+nVirtualLeft, m_rc.top+nVirtualTop,
m_rc.Width()-(bShowScrollV ? m_nScrollWidth : 0),
m_rc.Height()-(bShowScrollH ? m_nScrollWidth : 0),
&dc, m_rc.left, m_rc.top, SRCCOPY); // 背景复制到虚拟显示dc
// 更新区域按照显示区域调整
rcUpdate.OffsetRect(nVirtualLeft, nVirtualTop);
// 画子控件到虚拟dc
for (size_t i = 0; i < m_vecControl.size(); i++)
{
CControlBase * pControlBase = m_vecControl.at(i);
if (pControlBase && pControlBase->GetVisible()
&& (pControlBase != m_pControScrollV) && (pControlBase != m_pControScrollH))
{
// 如果顶部位置发生了变化,需要重画所有子控件,但会造成速度很慢
if(m_nVirtualTop != nVirtualTop)
{
pControlBase->UpdateControl(true);
}
pControlBase->Draw(virtualDC, rcUpdate);
}
}
// 画滚动条,滚动条整个区域都需要更新
m_pControScrollV->Draw(dc, m_pControScrollV->GetRect());
m_pControScrollH->Draw(dc, m_pControScrollH->GetRect());
m_nVirtualTop = nVirtualTop;
m_nVirtualLeft = nVirtualLeft;
// 虚拟显示dc复制到dc(滚动条部分不用复制)
dc.BitBlt(m_rc.left, m_rc.top, m_rc.Width()-(bShowScrollV ? m_nScrollWidth : 0),
m_rc.Height()-(bShowScrollH ? m_nScrollWidth : 0),
&virtualDC, m_rc.left + nVirtualLeft, m_rc.top + nVirtualTop, SRCCOPY);
// 释放虚拟显示dc
virtualDC.SelectObject(pOldVirtualBitmap);
virtualDC.DeleteDC();
virtualBitmap.DeleteObject();
return TRUE;
}
