SDropDown.cpp

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/**
 * Copyright (C) 2014-2050 SOUI团队
 * All rights reserved.
 *
 * @file       SDropDown.cpp
 * @brief      SDropDownWnd类源文件
 * @version    v1.0
 * @author     soui
 * @date       2014-05-25
 *
 * Describe  此文件主要用于SDropDownWnd类相关实现
 */
#include <souistd.h>
#include <control/SDropDown.h>
#include <core/SMsgLoop.h>
 
SNSBEGIN
#define IDINIT -1
 
SDropDownWnd::SDropDownWnd(ISDropDownOwner *pOwner)
    : m_pOwner(pOwner)
    , m_bClick(FALSE)
    , m_uExitCode((UINT)IDINIT)
{
}
 
SDropDownWnd::~SDropDownWnd()
{
}
 
void SDropDownWnd::OnFinalMessage(HWND hWnd)
{
    __baseCls::OnFinalMessage(hWnd);
    delete this;
}
 
void SDropDownWnd::OnKillFocus(HWND wndFocus)
{
    if (wndFocus != m_hWnd)
    {
        EndDropDown();
    }
}
 
SWindow *SDropDownWnd::GetDropDownOwner()
{
    SASSERT(m_pOwner);
    return m_pOwner->GetDropDownOwner();
}
 
BOOL SDropDownWnd::Create(LPCRECT lpRect, LPVOID lParam, DWORD dwStyle, DWORD dwExStyle)
{
    HWND hParent = m_pOwner->GetDropDownOwner()->GetContainer()->GetHostHwnd();
    HWND hWnd = SNativeWnd::CreateNative(NULL, dwStyle, dwExStyle, lpRect->left, lpRect->top, lpRect->right - lpRect->left, lpRect->bottom - lpRect->top, hParent, 0, NULL);
    if (!hWnd)
        return FALSE;
    GetMsgLoop()->AddMessageFilter(this);
    m_pOwner->OnCreateDropDown(this);
    return TRUE;
}
 
void SDropDownWnd::OnLButtonDown(UINT nFlags, CPoint point)
{
    CRect rcWnd;
    SNativeWnd::GetClientRect(&rcWnd);
    if (!rcWnd.PtInRect(point))
    {
        EndDropDown();
    }
    else
    {
        m_bClick = TRUE;
        SetMsgHandled(FALSE);
    }
}
 
void SDropDownWnd::OnLButtonUp(UINT nFlags, CPoint point)
{
    if (m_bClick)
    {
        LRESULT lRes = 0;
        HWND hWnd = m_hWnd;
        CRect rcWnd;
        SNativeWnd::GetClientRect(&rcWnd);
        SHostWnd::ProcessWindowMessage(m_hWnd, WM_LBUTTONUP, nFlags, MAKELPARAM(point.x, point.y), lRes);
        if (::IsWindow(hWnd) && !rcWnd.PtInRect(point))
            EndDropDown(); //强制关闭弹出窗口
    }
}
 
void SDropDownWnd::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
    if (nChar == VK_RETURN)
        EndDropDown(IDOK);
    else if (nChar == VK_ESCAPE)
        EndDropDown();
    else
        SetMsgHandled(FALSE);
}
 
void SDropDownWnd::EndDropDown(UINT uCode)
{
    if (m_uExitCode != IDINIT)
        return;
    m_uExitCode = uCode;
    SNativeWnd::DestroyWindow();
}
 
void SDropDownWnd::OnDestroy()
{
    m_pOwner->OnDestroyDropDown(this);
    GetMsgLoop()->RemoveMessageFilter(this);
    SetMsgHandled(FALSE);
}
 
BOOL SDropDownWnd::PreTranslateMessage(MSG *pMsg)
{
    if (pMsg->message == WM_ACTIVATEAPP)
    {
        SNativeWnd::SendMessage(pMsg->message, pMsg->wParam, pMsg->lParam);
    }
    else if (pMsg->message == WM_MOUSEMOVE)
    { //由于窗口显示后就调用了setcapture，导致收不到setcursor消息，这里在WM_MOUSEMOVE消息里模拟一个setcursor消息。
        SNativeWnd::SendMessage(WM_SETCURSOR, (WPARAM)m_hWnd, MAKELPARAM(HTCLIENT, WM_MOUSEMOVE));
    }
    return FALSE;
}
 
void SDropDownWnd::OnActivateApp(BOOL bActive, DWORD dwThreadID)
{
    if (!bActive)
    {
        EndDropDown();
    }
}
 
int SDropDownWnd::OnMouseActivate(HWND wndTopLevel, UINT nHitTest, UINT message)
{
    return MA_NOACTIVATEANDEAT;
}
 
BOOL SDropDownWnd::OnReleaseSwndCapture()
{
    BOOL bRet = SHostWnd::OnReleaseSwndCapture();
    SNativeWnd::SetCapture();
    return bRet;
}
 
IMessageLoop *SDropDownWnd::GetMsgLoop()
{
    return m_pOwner->GetDropDownOwner()->GetContainer()->GetMsgLoop();
}
 
SNSEND