//------------------------------------------------------------------------
//! The framework calls this member function when the user double-clicks
//! the left mouse button. Used to expand and collapse groups when group
//! header is clicked.
//!
//! @param nFlags Indicates whether various virtual keys are down (MK_CONTROL, MK_SHIFT, etc.)
//! @param point Specifies the x- and y-coordinate of the cursor relative to the upper-left corner of the window.
//------------------------------------------------------------------------
void CGridListCtrlGroups::OnLButtonDblClk(UINT nFlags, CPoint point)
{
CGridListCtrlEx::OnLButtonDblClk(nFlags, point);
if (!IsGroupStateEnabled())
return;
int nGroupId = GroupHitTest(point);
if (nGroupId!=-1)
{
if (HasGroupState(nGroupId, LVGS_COLLAPSED))
SetGroupState(nGroupId, LVGS_NORMAL);
else
SetGroupState(nGroupId, LVGS_COLLAPSED);
}
}
//------------------------------------------------------------------------
//! Expand all groups
//------------------------------------------------------------------------
void CGridListCtrlGroups::ExpandAllGroups()
{
if (!IsGroupStateEnabled())
return;
// Loop through all rows and find possible groups
for(int nRow=0; nRow<GetItemCount(); ++nRow)
{
int nGroupId = GetRowGroupId(nRow);
if (nGroupId!=-1)
{
if (HasGroupState(nGroupId,LVGS_COLLAPSED))
{
SetGroupState(nGroupId,LVGS_NORMAL);
}
}
}
}
//------------------------------------------------------------------------
//! Override this method to change the context menu when activating context
//! menu for the group headers
//!
//! @param pWnd Handle to the window in which the user right clicked the mouse
//! @param point Position of the cursor, in screen coordinates, at the time of the mouse click.
//! @param nGroupId ID of the group
//------------------------------------------------------------------------
void CGridListCtrlGroups::OnContextMenuGroup(CWnd* pWnd, CPoint point, int nGroupId)
{
CMenu menu;
UINT uFlags = MF_BYPOSITION | MF_STRING;
VERIFY( menu.CreatePopupMenu() );
const CString& groupHeader = GetGroupHeader(nGroupId);
// Provide menu-options for collapsing groups, if the collapsible state is not available
#ifndef LVGS_COLLAPSIBLE
if (IsGroupStateEnabled())
{
if (HasGroupState(nGroupId,LVGS_COLLAPSED))
{
CString menuText = CString(_T("Expand group: ")) + groupHeader;
menu.InsertMenu(0, uFlags, 1, menuText);
}
else
{
CString menuText = CString(_T("Collapse group: ")) + groupHeader;
menu.InsertMenu(0, uFlags, 2, menuText);
}
}
#endif
if (GetExtendedStyle() & LVS_EX_CHECKBOXES)
{
CString menuText = CString(_T("Check group: ")) + groupHeader;
menu.InsertMenu(1, uFlags, 3, menuText);
menuText = CString(_T("Uncheck group: ")) + groupHeader;
menu.InsertMenu(2, uFlags, 4, menuText);
}
int nResult = menu.TrackPopupMenu(TPM_LEFTALIGN | TPM_RETURNCMD, point.x, point.y, this, 0);
switch(nResult)
{
case 1: SetGroupState(nGroupId, LVGS_NORMAL); break;
case 2: SetGroupState(nGroupId, LVGS_COLLAPSED); break;
case 3: CheckEntireGroup(nGroupId, true); break;
case 4: CheckEntireGroup(nGroupId, false); break;
}
}
//------------------------------------------------------------------------
//! Updates the state of a group
//!
//! @param nGroupId ID of the group
//! @param dwState Specifies the new state of the group
//! @return The group state was updated (true / false)
//------------------------------------------------------------------------
BOOL CGridListCtrlGroups::SetGroupState(int nGroupId, DWORD dwState)
{
// Vista SDK - ListView_SetGroupState / LVM_SETGROUPINFO
if (!IsGroupStateEnabled())
return FALSE;
LVGROUP lg = {0};
lg.cbSize = sizeof(lg);
lg.mask = LVGF_STATE;
lg.state = dwState;
lg.stateMask = dwState;
#ifdef LVGS_COLLAPSIBLE
// Maintain LVGS_COLLAPSIBLE state
if (HasGroupState(nGroupId, LVGS_COLLAPSIBLE))
lg.state |= LVGS_COLLAPSIBLE;
#endif
if (SetGroupInfo(nGroupId, (PLVGROUP)&lg)==-1)
return FALSE;
return TRUE;
}
void CFeedIcoItemListCtrl::DrawGroupInfo(CDC & dcMem, const CRect & rectClip, const CRect & rectClient)
{
dcMem.SelectObject(&m_FontBold);
if (thePrefs.GetWindowsVersion() >= _WINVER_VISTA_ )
{
int n = GetGroupCount();
for(int i = 0 ; i < n; ++i)
{
CString strGroupCaption = GetGroupCaption( i );
CString strGroupTotals;
if ( strGroupCaption == m_mapGroups.GetKeyAt(i) )
{
const CSimpleArray<int>& groupRows = m_mapGroups.GetValueAt(i);
strGroupTotals.Format(_T("(共%d个)"), groupRows.GetSize());
}
LVGROUP lg = GetGroupInfoByIndex(i, LVGF_GROUPID);
CRect rcGroup = GetRectbyGroupID(lg.iGroupId, LVGGR_HEADER);
CRect rcIntersect;
rcIntersect.IntersectRect(rectClip, rcGroup);
//rcGroup.DeflateRect(0, 7);//缩小7像素高度
//rcGroup.OffsetRect(0, -7);//向上偏移7像素
if ( !rcIntersect.IsRectEmpty() )
{
DrawGroup(dcMem, rcGroup, strGroupCaption, strGroupTotals);
}
#ifdef LVGS_COLLAPSIBLE
// Maintain LVGS_COLLAPSIBLE state
CRect rcDropDown(rcGroup.right - 20, rcGroup.top + 10, rcGroup.right - 5, rcGroup.bottom - 3);
if (HasGroupState(i, LVGS_COLLAPSED))
{
if (m_imageRss_Group_Drop_Up_Nor)
{
m_imageRss_Group_Drop_Up_Nor->Draw(dcMem, rcDropDown.left, rcDropDown.top);
}
}
else if (HasGroupState(i, LVGS_NORMAL))
{
if (m_imageRss_Group_Drop_Down_Nor)
{
m_imageRss_Group_Drop_Down_Nor->Draw(dcMem, rcDropDown.left, rcDropDown.top);
}
}
#endif
//CRect rcDropDown(rcGroup.right - 20, rcGroup.top + 7, rcGroup.right - 5, rcGroup.bottom - 3);
//CRgn rgDropDown;//画圆角矩形
//rgDropDown.CreateRoundRectRgn( rcDropDown.left, rcDropDown.top, rcDropDown.right, rcDropDown.bottom, 3, 3 );
//
//CBrush* brushFrame;
//brushFrame = new CBrush( GetSysColor(COLOR_GRAYTEXT) );
//dcMem.FrameRgn(&rgDropDown,brushFrame,1,1);//画焦点边框
//delete brushFrame;
}
}
else
{
if ( nGroupHeight == -1 )
{
CRect rcFirstItem;//算法有待优化
GetItemRect(0, rcFirstItem, LVIR_BOUNDS);
if ( !rcFirstItem.IsRectEmpty() )
{
nGroupHeight = rcFirstItem.top;
}
}//计算group 高度
CFeedCatalogs & feedCatalogs = CFeedCatalogs::GetInstance();
//遍历Catlogs 获得每个一级分类的Start RssData[只要用第一个就行了....第一个向上偏移绘制]
for ( CFeedCatalogs::iterator it = feedCatalogs.GetBegin();
it != feedCatalogs.GetEnd();
++it )
{
FeedCatalog & feedCatlog = it->second;
if ( feedCatlog.IsTop() && feedCatlog.GetFeedCount() > 0 )
{
CRssFeedBase* feedStart = feedCatlog.GetFirstFeed();
int nStartIndex = GetItemIndex( (CRssFeed*)feedStart );//确定第一个item位置
if ( nStartIndex > -1 )
{
int nGroupID = GetGroupIDByItemIndex( nStartIndex );
CString strGroupCaption = GetGroupCaption( nGroupID );
CString strGroupTotals;
const CSimpleArray<int>& groupRows = m_mapGroups.GetValueAt(nGroupID);
strGroupTotals.Format(_T("(共%d个)"), groupRows.GetSize());
//strGroupTotals.Format(_T("(共 %n 个)"), GetGroupCount());
CRect itemRect;
GetItemRect(nStartIndex, &itemRect, LVIR_BOUNDS);
//根据item rect获得group rect
CRect rcGroup(rectClient.left, itemRect.top - nGroupHeight, rectClient.right, itemRect.top - 6);
CRect rtIntersect;
rtIntersect.IntersectRect(rectClip, rcGroup);
if ( !rtIntersect.IsRectEmpty() )
{
DrawGroup(dcMem, rcGroup, strGroupCaption, strGroupTotals);
}
}
}
}
}
}
