window.cpp

FreeAMP(MP3播放)程序源代码-用来研究MP3解码

}

void Window::HandleMouseWheelChange(int iSteps)
{
    m_pTheme->HandleMouseWheelChange(iSteps);
}

void Window::HandleMouseMove(Pos &oScreenPos)
{
    Control *pControl;
    Pos      oPos;
    Rect     oRect;

    IncUsageRef();

    if (m_bWindowMove)
    {
       Rect oActualPos;

       m_oMoveStart.x1 += (oScreenPos.x - m_oMovePos.x);
       m_oMoveStart.x2 += (oScreenPos.x - m_oMovePos.x);
       m_oMoveStart.y1 += (oScreenPos.y - m_oMovePos.y);
       m_oMoveStart.y2 += (oScreenPos.y - m_oMovePos.y);

       oActualPos = m_oMoveStart;

       if (m_iDesktopWidth > 0 && m_iDesktopHeight > 0)
       {
           if ((oActualPos.x1 >= 0 && oActualPos.x1 < iDesktopSnapAmount) || 
               (oActualPos.x1 < 0 && oActualPos.x1 > -iDesktopSnapAmount)) 
           {
               oActualPos.x2 -= oActualPos.x1;
               oActualPos.x1 = 0;           
           }
           if ((oActualPos.y1 >= 0 && oActualPos.y1 < iDesktopSnapAmount) ||
               (oActualPos.y1 < 0 && oActualPos.y1 > -iDesktopSnapAmount)) 
           {
               oActualPos.y2 -= oActualPos.y1;
               oActualPos.y1 = 0;           
           }
           if ((oActualPos.x2 < m_iDesktopWidth && 
                oActualPos.x2 >= m_iDesktopWidth - iDesktopSnapAmount) || 
               (oActualPos.x2 > m_iDesktopWidth && 
                oActualPos.x2 <= m_iDesktopWidth + iDesktopSnapAmount)) 
           {
               oActualPos.x1 += m_iDesktopWidth - oActualPos.x2;
               oActualPos.x2 = m_iDesktopWidth;           
           }
           if ((oActualPos.y2 < m_iDesktopHeight && 
                oActualPos.y2 >= m_iDesktopHeight - iDesktopSnapAmount) || 
               (oActualPos.y2 > m_iDesktopHeight && 
                oActualPos.y2 <= m_iDesktopHeight + iDesktopSnapAmount)) 
           {
               oActualPos.y1 += m_iDesktopHeight - oActualPos.y2;
               oActualPos.y2 = m_iDesktopHeight;           
           }
       }       

       m_oMovePos = oScreenPos;
       SetWindowPosition(oActualPos);
       DecUsageRef();
       
       return; 
    }

    if (m_bLButtonDown && !LButtonDown())
    {
       m_bLButtonDown = false;
       m_pMouseDownControl = NULL;
    }

    GetWindowPosition(oRect);
    oPos.x = oScreenPos.x - oRect.x1;
    oPos.y = oScreenPos.y - oRect.y1;
   
    if (m_pCaptureControl)
    {
       m_pCaptureControl->AcceptTransition(CT_MouseMove, &oPos);
       DecUsageRef();
       return;
    }

    pControl = ControlFromPos(oPos);
    if (pControl)
    {
       if (m_pMouseDownControl && m_pMouseInControl &&
           m_pMouseDownControl != pControl)
       {
           m_pMouseInControl->AcceptTransition(CT_MouseLeave);
           m_pMouseInControl = NULL;
       }    
       else
       if (m_pMouseDownControl && m_pMouseInControl == NULL &&
           m_pMouseDownControl == pControl)
       {
           m_pMouseInControl = m_pMouseDownControl;
           m_pMouseInControl->AcceptTransition(CT_MouseEnter);
           m_pMouseInControl->AcceptTransition(CT_MouseLButtonDown);
       }    
       else
       if (!m_bLButtonDown)
       {
           if (m_pMouseInControl && m_pMouseInControl != pControl)
           {
               m_pMouseInControl->AcceptTransition(CT_MouseLeave);
               m_pMouseInControl = pControl;
               m_pMouseInControl->AcceptTransition(CT_MouseEnter);
               if (m_bLButtonDown)
               {
                  m_pMouseInControl->AcceptTransition(CT_MouseLButtonDown);
               }   
           }
           else
           if (m_pMouseInControl == NULL)
           {
               m_pMouseInControl = pControl;
               m_pMouseInControl->AcceptTransition(CT_MouseEnter);
               if (m_bLButtonDown)
               {
                  m_pMouseInControl->AcceptTransition(CT_MouseLButtonDown);
               }
           }
       }

       pControl->AcceptTransition(CT_MouseMove, &oPos);
       DecUsageRef();
       return;
    }
    else
    {
       if (m_pMouseInControl)
       {
           m_pMouseInControl->AcceptTransition(CT_MouseLeave);
           m_pMouseInControl = NULL;
       }
    }
    DecUsageRef();

    return;
}

void Window::HandleMouseLButtonDown(Pos &oScreenPos)
{
    Control *pControl;
    Rect     oRect;
    Pos      oPos;

    IncUsageRef();

    GetWindowPosition(oRect);
    oPos.x = oScreenPos.x - oRect.x1;
    oPos.y = oScreenPos.y - oRect.y1;

    if (m_pCaptureControl)
    {
       m_pCaptureControl->AcceptTransition(CT_MouseLButtonDown, &oPos);
       DecUsageRef();
       return;
    }

    pControl = ControlFromPos(oPos);
    if (pControl && pControl->UseToDragWindow())
       pControl = NULL;

    if (pControl)
    {
       m_bLButtonDown = true;
       if (m_pMouseInControl != pControl) {
           if (m_pMouseInControl)
               m_pMouseInControl->AcceptTransition(CT_MouseLeave);
           m_pMouseInControl = pControl;
           m_pMouseInControl->AcceptTransition(CT_MouseEnter);
       }
       m_pMouseDownControl = pControl;
       pControl->AcceptTransition(CT_MouseLButtonDown, &oPos);
       DecUsageRef();
       return;
    }

#ifdef __QNX__
    DecUsageRef();
    return;
#endif

    m_bWindowMove = true;
#ifndef HAVE_GTK
    CaptureMouse(true);
#endif
       
    GetWindowPosition(m_oMoveStart);
    m_pCanvas->GetBackgroundRect(oRect);
    m_oMoveStart.x2 = m_oMoveStart.x1 + oRect.Width();
    m_oMoveStart.y2 = m_oMoveStart.y1 + oRect.Height();
    m_oMovePos = oScreenPos;

    if (IsError(GetDesktopSize(m_iDesktopWidth, m_iDesktopHeight)))
       m_iDesktopWidth = m_iDesktopHeight = 0;

    DecUsageRef();

    return;
}

void Window::HandleMouseLButtonDoubleClick(Pos &oScreenPos)
{
    Control *pControl;
    Rect     oRect;
    Pos      oPos;

    IncUsageRef();

    GetWindowPosition(oRect);
    oPos.x = oScreenPos.x - oRect.x1;
    oPos.y = oScreenPos.y - oRect.y1;

    pControl = ControlFromPos(oPos);
    if (pControl)
        m_pMouseInControl->AcceptTransition(CT_MouseLButtonDoubleClick);

    DecUsageRef();

    return;
}

void Window::HandleMouseLButtonUp(Pos &oScreenPos)
{
    Control *pControl;
    Pos      oPos;
    Rect     oRect;

    IncUsageRef();

    GetWindowPosition(oRect);
    oPos.x = oScreenPos.x - oRect.x1;
    oPos.y = oScreenPos.y - oRect.y1;

    if (m_bWindowMove)
    {
       m_bWindowMove = false;
#ifndef HAVE_GTK
       CaptureMouse(false);
#endif        
       DecUsageRef();
  
       return; 
    }

    m_bLButtonDown = false;
    m_pMouseDownControl = NULL;
    if (m_pCaptureControl)
    {
       m_pCaptureControl->AcceptTransition(CT_MouseLButtonUp, &oPos);
       DecUsageRef();
       return;
    }

    pControl = ControlFromPos(oPos);
    if (pControl)
    {
       pControl->AcceptTransition(CT_MouseLButtonUp, &oPos);
       DecUsageRef();
       return;
    }

    DecUsageRef();
    
    return;
}

void Window::HandleMouseMButtonDown(Pos &oScreenPos)
{
    return;
}

void Window::HandleMouseMButtonUp(Pos &oScreenPos)
{
    m_pTheme->HandleMouseWheelClick();
    return;
}

void Window::MouseHasEnteredWindow(void)
{
    IncUsageRef();
    string StatusControlName = string("WindowStatus");
    m_pTheme->HandleControlMessage(StatusControlName, CM_WindowEnter);
    DecUsageRef();
}

// Do you have any idea how much I wanted to call 
// this ElvisHasLeftTheBuilding()?
void Window::MouseHasLeftWindow(void)
{
    IncUsageRef();

    string StatusControlName = string("WindowStatus");
    m_pTheme->HandleControlMessage(StatusControlName, CM_WindowLeave);

    if (m_pMouseInControl)
    {
       m_pMouseInControl->AcceptTransition(CT_MouseLeave);
       m_pMouseInControl = NULL;
    }
    else if (!m_pMouseInControl)
    { 
       Pos oPos;

       GetMousePos(oPos);
       m_pMouseInControl = ControlFromPos(oPos);
       if (m_pMouseInControl) {
          m_pMouseInControl->AcceptTransition(CT_MouseEnter);
          m_pTheme->HandleControlMessage(StatusControlName, CM_WindowEnter);
       }
    }      
    DecUsageRef();
}

void Window::TimerEvent(void)
{
    vector<Panel *>::iterator i;

    if (!m_bTimerEnabled)
       return;

    IncUsageRef();

    for(i = m_oPanels.begin(); i != m_oPanels.end(); i++)
        (*i)->TimerEvent();
    
    DecUsageRef();
}

void Window::EnableTimer(bool bEnable)
{
    m_bTimerEnabled = bEnable;
}  

void Window::SetStayOnTop(bool bStay)
{
    m_bStayOnTop = bStay;
}

void Window::SetLiveInToolbar(bool bLive)
{
    m_bLiveInToolbar = bLive;
}

void Window::Keystroke(unsigned char cKey)
{
    m_pTheme->HandleKeystroke(cKey);
}

bool Window::MenuCommand(uint32 uCommand)
{
    bool bRet;

    IncUsageRef();
    bRet = m_pTheme->HandleMenuCommand(uCommand);
    DecUsageRef();
    
    return bRet;
}

void Window::VolumeChanged(void)
{
    IncUsageRef();
    m_pTheme->VolumeChanged();
    DecUsageRef();
}

void Window::GetReloadWindowPos(Rect &oOldRect, int iNewWidth, int iNewHeight, 
                                Rect &oNewRect)
{
    int32 iSizeX, iSizeY;
 
    oNewRect = oOldRect;
    oNewRect.x2 = oNewRect.x1 + iNewWidth;
    oNewRect.y2 = oNewRect.y1 + iNewHeight;

    GetDesktopSize(iSizeX, iSizeY);
    if (oNewRect.x2 > iSizeX)
    {
       oNewRect.x1 -= oNewRect.x2 - iSizeX;
       oNewRect.x2 -= oNewRect.x2 - iSizeX;
    }   
    if (oNewRect.y2 > iSizeY)
    {
       oNewRect.y1 -= oNewRect.y2 - iSizeY;
       oNewRect.y2 -= oNewRect.y2 - iSizeY;
    }
    if (oNewRect.x1 < 0)
    {
       oNewRect.x2 -= oNewRect.x1;
       oNewRect.x1 = 0;
    }   
    if (oNewRect.y1 < 0)
    {
       oNewRect.y2 -= oNewRect.y1;
       oNewRect.y1 = 0;
    }   
   
    if (oOldRect.x2 == iSizeX)
    {
       oNewRect.x2 = iSizeX;
       oNewRect.x1 = iSizeX - iNewWidth;
    }
    if (oOldRect.y2 == iSizeY)
    {
       oNewRect.y2 = iSizeY;
       oNewRect.y1 = iSizeY - iNewHeight;
    }
    if (oOldRect.x1 == 0)
    {
       oNewRect.x1 = 0;
       oNewRect.x2 = iNewWidth;
    }
    if (oOldRect.y2 == 0)
    {
       oNewRect.y1 = 0;
       oNewRect.y2 = iNewHeight;
    }
}