bool CUIComboBox::Activate()
{
if( !CUIControl::Activate() ) return false;
m_uButtonState |= UISTATE_PUSHED | UISTATE_CAPTURED;
if (m_pWindow) return true;
m_pWindow = new CUIComboBoxWnd;
SIZE szAvailable = { 0, 30 };
m_szDropBox.cy = 0;
for( int i = 0; i < m_items.GetSize(); i++ )
{
CUIControl* pControl = static_cast<CUIControl*>(m_items[i]);
if (pControl)
{
SIZE size = pControl->EstimateSize(szAvailable);
if (m_nItemHeight < size.cy)
{
m_szDropBox.cy += size.cy;
}
else
{
m_szDropBox.cy += m_nItemHeight;
CUIListLabelElement* pLabel = dynamic_cast<CUIListLabelElement*>(pControl);
if (pLabel)
{
pLabel->SetHeight(m_nItemHeight);
}
}
}
}
m_szDropBox.cy += 6;
if (m_szDropBox.cy > m_nDropBoxHeight)
{
m_szDropBox.cy = m_nDropBoxHeight;
m_bIsHasVScroll = true;
}
m_pWindow->Init(this);
if( m_pManager != NULL ) m_pManager->SendNotify(this, UI_NOTIFY_DROPDOWN);
Invalidate();
return true;
}
void CUIVerticalLayout::SetPos(const CUIRect& rc)
{
CUIRect rcTemp = rc;
CUIControl::SetPos(rc);
rcTemp = m_rcItem;
//
// 调整内边距
//
rcTemp.left += m_rcInset.left;
rcTemp.top += m_rcInset.top;
rcTemp.right -= m_rcInset.right;
rcTemp.bottom -= m_rcInset.bottom;
if( m_items.GetSize() == 0) {
ProcessScrollBar(rcTemp, 0, 0);
return;
}
//
// 如果有滚动条，减去滚动条的宽度
//
if(m_pVerticalScrollBar && m_pVerticalScrollBar->IsVisible())
rcTemp.right -= m_pVerticalScrollBar->GetFixedWidth();
if(m_pHorizontalScrollBar && m_pHorizontalScrollBar->IsVisible())
rcTemp.bottom -= m_pHorizontalScrollBar->GetFixedHeight();
//
// Determine the minimum size
//
SIZE szAvailable = { rcTemp.right - rcTemp.left, rcTemp.bottom - rcTemp.top };
if( m_pHorizontalScrollBar && m_pHorizontalScrollBar->IsVisible() )
szAvailable.cx += m_pHorizontalScrollBar->GetScrollRange();
int nAdjustables = 0; //要调整控件的个数
int cyFixed = 0; //控件固定的宽度
int nEstimateNum = 0; //调整控件的个数
for( int it1 = 0; it1 < m_items.GetSize(); it1++ ) {
CUIControl* pControl = static_cast<CUIControl*>(m_items[it1]);
//
// 控件不可见不进行处理
//
if(!pControl->IsVisible())
continue;
//
// 控件为float类型的不进行处理
//
if(pControl->IsFloat())
continue;
SIZE sz = pControl->EstimateSize(szAvailable);
if(sz.cy == 0) {
//
// 高度等于0需要我们来计算
//
nAdjustables++;
}else{
//
// 不能超出控件的设置的最小和最大值
//
if( sz.cy < pControl->GetMinHeight() )
sz.cy = pControl->GetMinHeight();
if( sz.cy > pControl->GetMaxHeight() )
sz.cy = pControl->GetMaxHeight();
}
//
// 加上下外边距
//
cyFixed += sz.cy + pControl->GetPadding().top + pControl->GetPadding().bottom;
nEstimateNum++;
}
//
// 加上子控件之间的额外距离
//
cyFixed += (nEstimateNum - 1) * m_iChildPadding;
//
// Place elements
//
int cyNeeded = 0;
int cyExpand = 0;
//
// 计算要调整的每个控件的平均高度
//
if( nAdjustables > 0 )
cyExpand = MAX(0, (szAvailable.cy - cyFixed) / nAdjustables);
//
// Position the elements
// 减去滚动条的位置
//
SIZE szRemaining = szAvailable;
int iPosY = rcTemp.top;
if(m_pVerticalScrollBar && m_pVerticalScrollBar->IsVisible()) {
iPosY -= m_pVerticalScrollBar->GetScrollPos();
}
int iPosX = rcTemp.left;
if(m_pHorizontalScrollBar && m_pHorizontalScrollBar->IsVisible()) {
iPosX -= m_pHorizontalScrollBar->GetScrollPos();
}
int iAdjustable = 0;
int cyFixedRemaining = cyFixed;
for( int it2 = 0; it2 < m_items.GetSize(); it2++ ) {
CUIControl* pControl = static_cast<CUIControl*>(m_items[it2]);
if( !pControl->IsVisible() )
continue;
if( pControl->IsFloat() ) {
SetFloatPos(it2);
continue;
}
RECT rcPadding = pControl->GetPadding();
szRemaining.cy -= rcPadding.top;
CUISize sz = pControl->EstimateSize(szRemaining);
if(sz.cy == 0){
iAdjustable++;
//
// 赋平均值
//
sz.cy = cyExpand;
if( iAdjustable == nAdjustables ) {
//
// Distribute remaining to last element (usually round-off left-overs)
//
sz.cy = MAX(0, szRemaining.cy - rcPadding.bottom - cyFixedRemaining);
}
//
// 不能超过控件的最大与最小值
//
if( sz.cy < pControl->GetMinHeight() ) sz.cy = pControl->GetMinHeight();
if( sz.cy > pControl->GetMaxHeight() ) sz.cy = pControl->GetMaxHeight();
}else{
//
// 固定高度的控件
//
if( sz.cy < pControl->GetMinHeight() ) sz.cy = pControl->GetMinHeight();
if( sz.cy > pControl->GetMaxHeight() ) sz.cy = pControl->GetMaxHeight();
cyFixedRemaining -= sz.cy;
}
//
// 调整宽度的值
//
sz.cx = pControl->GetFixedWidth();
if( sz.cx == 0 ) sz.cx = szAvailable.cx - rcPadding.left - rcPadding.right;
if( sz.cx < 0 ) sz.cx = 0;
if( sz.cx < pControl->GetMinWidth() ) sz.cx = pControl->GetMinWidth();
if( sz.cx > pControl->GetMaxWidth() ) sz.cx = pControl->GetMaxWidth();
//
// 生成并设置新的POS
//
CUIRect rcCtrl(iPosX + rcPadding.left, iPosY + rcPadding.top, iPosX + rcPadding.left + sz.cx,
iPosY + sz.cy + rcPadding.top + rcPadding.bottom);
pControl->SetPos(rcCtrl);
//
// 处理下ChildPadding
//
iPosY += sz.cy + m_iChildPadding + rcPadding.top + rcPadding.bottom;
cyNeeded += sz.cy + rcPadding.top + rcPadding.bottom;
szRemaining.cy -= sz.cy + m_iChildPadding + rcPadding.bottom;
}
cyNeeded += (nEstimateNum - 1) * m_iChildPadding;
//
// Process the scrollbar
//
ProcessScrollBar(rcTemp, 0, cyNeeded);
}
