TnbMfcCursorControl.h

[詳解]

#pragma once
#include "TnbDef.h"
 
 
 
#ifndef __AFX_H__
 #error
#endif
 
 
 
//TNB Library
namespace TNB {
namespace MFC {
 
 
 
template<typename TYP = CStatic>
class CCursorControlAddinT : public TYP
{
    DEFSUPER(TYP);
public:
 
    CCursorControlAddinT(void) : m_normalCursor(NULL), m_hoverCursor(NULL), m_pushedCursor(NULL)
        , m_boHasHover(false), m_boIsPushed(false), m_boIsEnable(true)
    {
        #ifdef IDC_HAND
            m_hoverCursor = ::LoadCursor(NULL, IDC_HAND);
        #endif
    }
 
    void SetHoverCursor(HCURSOR h)
    {
        m_hoverCursor = h;
    }
 
    void SetPushedCursor(HCURSOR h)
    {
        m_pushedCursor = h;
    }
 
    template<typename T>
    void CopyCursorState(const CCursorControlAddinT<T>& other)
    {
        m_hoverCursor = other.m_hoverCursor;
        m_pushedCursor = other.m_pushedCursor;
    }
 
    void SpecialCursor(HCURSOR h)
    {
        m_boIsEnable = false;
        ::SetCursor(h);
    }
 
    void ResetCursor(void)
    {
        m_boIsEnable = true;
    }
 
protected:
 
    virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
    {
        switch ( message )
        {
        case WM_LBUTTONDOWN:
        case WM_LBUTTONDBLCLK:
            if ( ! m_boIsPushed )
            {
                m_boIsPushed = true;
                m_CheckNowState();
            }
            break;
        case WM_LBUTTONUP:
            if ( m_boIsPushed )
            {
                m_boIsPushed = false;
                m_CheckNowState();
            }
            break;
        case WM_MOUSEMOVE:
        case WM_MOUSEHOVER:
            if ( ! m_boHasHover )
            {
                m_boHasHover = true;
                m_HoverSub();
            }
            m_CheckNowState();
            break;
        case WM_MOUSELEAVE:
            if ( m_boHasHover )
            {
                m_boHasHover = false;
                m_CheckNowState();
            }
            break;
        case WM_ENABLE:
            m_CheckNowState();
            break;
        case WM_DESTROY:
            m_boHasHover = false;
            m_boIsPushed = false;
            m_CheckNowState();
            break;
        }
        return _super::WindowProc(message, wParam, lParam);
    }
 
private:
 
    HCURSOR             m_normalCursor; 
    HCURSOR             m_hoverCursor;  
    HCURSOR             m_pushedCursor; 
    bool                m_boHasHover;   
    bool                m_boIsPushed;   
    bool                m_boIsEnable;   
    void m_HoverSub(void)
    {
        TRACKMOUSEEVENT tme;
        tme.cbSize = sizeof (TRACKMOUSEEVENT);
        tme.hwndTrack = m_hWnd;
        tme.dwHoverTime = HOVER_DEFAULT;
        tme.dwFlags = TME_HOVER | TME_LEAVE;
        ::_TrackMouseEvent(&tme);
    }
    void m_CheckNowState(void)
    {
        if ( ! m_boIsEnable ) { return; }
        if ( m_normalCursor == NULL )
        {
            m_normalCursor = ::GetCursor();
            ::SetClassLongPtr(m_hWnd, GCLP_HCURSOR, NULL); //Winに関連している CursorをNULL化
        }
        HCURSOR h = m_normalCursor;
        if ( _super::IsWindowEnabled() )
        {
            if ( m_boIsPushed && m_pushedCursor != NULL )
            {
                h = m_pushedCursor;
            }
            else if ( m_boHasHover && m_hoverCursor != NULL )
            {
                h = m_hoverCursor;
            }
        }
        ::SetCursor(h);
    }
};
 
 
 
}; //MFC
}; //TNB