wg_toolbar.cpp

一个小巧的嵌入式图形系统wGUI, 可以用VC编译

// wg_toolbar.cpp
//
// CToolBar class implementation
//
//
// Copyright (c) 2002 Rob Wiskow
// [e-mail]
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//


#include "wgui_include_config.h"
#include "wg_toolbar.h"
#include "wg_message_server.h"
#include "wg_debug.h"


namespace wGui
{

CToolBar::CToolBar(const CRect& WindowRect, CWindow* pParent) :
	CWindow(WindowRect, pParent)
{
  m_sClassName = "CToolBar";
	m_BGColor = COLOR_LIGHTGRAY;
	CMessageServer::Instance().RegisterMessageClient(this, CMessage::CTRL_LCLICK);
}


CToolBar::~CToolBar(void)
{

}


void CToolBar::InsertButton(CButton* pButton, long int iButtonID, int iPosition)
{
	long int iFixedButtonID = iButtonID;
	if (pButton == 0)
	{
		iFixedButtonID = 0;
	}
	else
	{
		// Transfer ownership of the button to the ToolBar
		pButton->SetNewParent(this);
	}
	if (iPosition == -1)
	{
		m_vpButtons.push_back(std::make_pair(pButton, iFixedButtonID));
	}
	else
	{
		m_vpButtons.insert(m_vpButtons.begin() + iPosition, std::make_pair(pButton, iFixedButtonID));
	}
	RepositionButtons();
}


void CToolBar::RemoveButton(int iPosition)
{
	CButton* pButton = m_vpButtons.at(iPosition).first;
	m_vpButtons.erase(m_vpButtons.begin() + iPosition);
	delete pButton;
}


int CToolBar::GetButtonPosition(long int iButtonID)
{
	int iPosition = -1;
	for (t_ButtonVector::iterator iter = m_vpButtons.begin(); iter != m_vpButtons.end(); ++iter)
	{
		++iPosition;
		if (iter->second == iButtonID)
		{
			return iPosition;
		}
	}
	return -1;
}


void CToolBar::RepositionButtons(void)
{
	int xPosition = m_WindowRect.Left() + 4;
	for (t_ButtonVector::iterator iter = m_vpButtons.begin(); iter != m_vpButtons.end(); ++iter)
	{
		CButton* pButton = iter->first;
		if (pButton)
		{
			int xStartPosition = xPosition;
			xPosition = xPosition + 2 + pButton->GetWindowRect().Width();
			pButton->SetWindowRect(CRect(xStartPosition, m_WindowRect.Top() + 2, xPosition - 3,
				m_WindowRect.Top() + 1 + pButton->GetWindowRect().Height()));

			// Hide any buttons that extend beyond the end of the toolbar
			if (xPosition > m_WindowRect.Right())
			{
				pButton->SetVisible(false);
			}
			else
			{
				pButton->SetVisible(true);
			}
		}
		else
		{
			// Spacer
			xPosition += 6;
		}
	}
}


void CToolBar::SetWindowRect(const CRect& WindowRect)
{
	CWindow::SetWindowRect(WindowRect);
	RepositionButtons();
}


bool CToolBar::HandleMessage(CMessage* pMessage)
{
	bool bHandled = false;

	if (pMessage)
	{
		switch(pMessage->MessageType())
		{
		case CMessage::CTRL_LCLICK:
		{
			if (pMessage->Destination() == this)
			{
				long int iButtonID = 0;
				for (t_ButtonVector::iterator iter = m_vpButtons.begin(); iter != m_vpButtons.end(); ++iter)
				{
					if (iter->first == pMessage->Source())
					{
						iButtonID = iter->second;
					}
				}
				CMessageServer::Instance().QueueMessage(new TIntMessage(CMessage::CTRL_LCLICK, m_pParentWindow, this, iButtonID));
				bHandled = true;
			}
			break;
		}
		default :
			bHandled = CWindow::HandleMessage(pMessage);
			break;
		}
	}

	return bHandled;
}

}