SDI (Sound Device Interface)--A library for Auditory Display

/******************************************************************
News Everywhere 1.0

Copyright (c) 2004 by ����  
All rights reserved.

This file is part of NewsEverywhere.

    NewsEverywhere is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    NewsEverywhere 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with NewsEverywhere; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

For any suggestion or failure report, please contact me by:
e-mail: jonathan1983@126.com
////////////////////////////////////////////////////////////////////////////////
File Name:NewsBar.cpp


********************************************************************/

#include "stdafx.h"
#include "NewsEverywhereMFC.h"
#include "NewsBar.h"

#include "helper.h"
#include "resource.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif




/////////////////////////////////////////////////////////////////////////////
// CNewsBar

CNewsBar::CNewsBar()
{
	m_pTitle=NULL;
	m_nTitle=-1;
	m_nTitleCurPlay=-1;
	

	
	LOGFONT font;
	ZeroMemory(&font,sizeof(LOGFONT));
	font.lfHeight=12;
	font.lfWidth=0;
	font.lfWeight=FW_THIN;
	font.lfCharSet=GB2312_CHARSET;
	_tcscpy(font.lfFaceName,"����");
	m_font.CreateFontIndirect(&font);
	
	m_brush.Attach((HBRUSH)GetStockObject(BLACK_BRUSH));

	m_pen.Attach((HPEN)GetStockObject(WHITE_PEN));

	HINSTANCE hInst=AfxGetInstanceHandle();
	m_hIconTR=(HICON)LoadImage(hInst,MAKEINTRESOURCE(IDI_TITLE_ROLL),IMAGE_ICON,16,16,0);
	m_hIconTS=(HICON)LoadImage(hInst,MAKEINTRESOURCE(IDI_TITLE_STOP),IMAGE_ICON,16,16,0);
	m_hIconCOn=(HICON)LoadImage(hInst,MAKEINTRESOURCE(IDI_CONTENT_ON),IMAGE_ICON,16,16,0);
	m_hIconCOff=(HICON)LoadImage(hInst,MAKEINTRESOURCE(IDI_CONTENT_OFF),IMAGE_ICON,16,16,0);
	m_hIconLeft=(HICON)LoadImage(hInst,MAKEINTRESOURCE(IDI_LEFT),IMAGE_ICON,16,16,0);
	m_hIconRight=(HICON)LoadImage(hInst,MAKEINTRESOURCE(IDI_RIGHT),IMAGE_ICON,16,16,0);

	m_bBackground=FALSE;
	m_bTitle=FALSE;
	m_bContent=FALSE;
	m_psText="";

	m_hTitle=m_hContent=m_hEarcon=NULL;
}

CNewsBar::~CNewsBar()
{
}


BEGIN_MESSAGE_MAP(CNewsBar, CWnd)
	//{{AFX_MSG_MAP(CNewsBar)
	ON_WM_LBUTTONDOWN()
	ON_WM_LBUTTONUP()
	ON_WM_MOUSEMOVE()
	ON_WM_RBUTTONDOWN()
	ON_WM_PAINT()
	ON_WM_LBUTTONDBLCLK()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()


/////////////////////////////////////////////////////////////////////////////
// CNewsBar message handlers

void CNewsBar::OnLButtonDown(UINT nFlags, CPoint point) 
{
	CRect rc;
	rc=CRect(2,2,30,18);
	if(PtInRect(rc,point))
	{
		SetCapture();
		HDC hDC=::GetDC(NULL);
		CDC dc;
		dc.Attach(hDC);
		m_ptFrom=point;
		GetWindowRect(m_rcFrom);
		m_rcPrev=m_rcFrom;
		dc.DrawFocusRect(&m_rcFrom);
		CWnd::OnLButtonDown(nFlags, point);
		dc.Detach();
		::ReleaseDC(NULL,hDC);
	}
	CWnd::OnLButtonDown(nFlags, point);
}

void CNewsBar::OnLButtonUp(UINT nFlags, CPoint point)
{
	if(GetCapture())
	{
		ReleaseCapture();
		HDC hDC=::GetDC(NULL);
		CDC dc;
		dc.Attach(hDC);
		dc.DrawFocusRect(&m_rcPrev);
		MoveWindow(m_rcPrev);
	}
	CWnd::OnLButtonUp(nFlags, point);
}

void CNewsBar::OnMouseMove(UINT nFlags, CPoint point)
{
	CRect rc;
	HCURSOR hCursor;
	
	if(GetCapture())
	{
		HDC hDC=::GetDC(NULL);
		CDC dc;
		dc.Attach(hDC);
		dc.DrawFocusRect(&m_rcPrev);
		m_rcPrev=m_rcFrom+(point-m_ptFrom);
		dc.DrawFocusRect(&m_rcPrev);
		dc.Detach();
		::ReleaseDC(NULL,hDC);
	}
	else
	{
		rc=CRect(2,2,30,18);
		if(PtInRect(rc,point))
			hCursor=LoadCursor(AfxGetInstanceHandle(), MAKEINTRESOURCE(IDC_CURSOR_MOVE));
		else
			hCursor=LoadCursor(AfxGetInstanceHandle(), MAKEINTRESOURCE(IDC_CURSOR_POINTER));
		SetCursor(hCursor);
	}
	CWnd::OnMouseMove(nFlags, point);
}

void CNewsBar::SetBGMode(BOOL bSet)
{
	CDC* pDC=GetDC();
	COLORREF white=RGB(255,255,255);
	pDC->SetBkMode(TRANSPARENT);
	pDC->SelectObject(m_brush);
	pDC->SelectObject(m_font);
	pDC->SetTextColor(white);

	CRect rcFrame(2,2,30,18);

	pDC->Rectangle(rcFrame);
	
	pDC->FrameRect(&rcFrame,&m_brush);

	if(bSet)
		pDC->DrawText("��̨",4,&rcFrame,DT_SINGLELINE|DT_CENTER|DT_VCENTER);
	else
		pDC->DrawText("ǰ̨",4,&rcFrame,DT_SINGLELINE|DT_CENTER|DT_VCENTER);
	m_bBackground=bSet;

}

void CNewsBar::OnRButtonDown(UINT nFlags, CPoint point) 
{
	ClientToScreen(&point);

	CMenu  m_pop;
	m_pop.CreatePopupMenu();
	if(m_nTitle==-1)
	{
		m_pop.InsertMenu(0,MF_STRING,TITLE_0-1,IDS_NO_ITEM);
	}
	else
	{
		m_pop.InsertMenu(0, MF_STRING, ID_GOTO_CURTITLE, "�򿪵�ǰ����");
		m_pop.InsertMenu(0, MF_STRING, ID_GOTO_CURCONTENT, "�򿪵�ǰ����");
	}
	m_pop.InsertMenu(0, MF_SEPARATOR, ID_GOTO_CURTITLE, "");
	TCHAR psText[100]="";
	for(int i=0;i<m_nTitle;i++)
	{
		*psText='\0';
		if(i==m_nTitleCurPlay)
			_tcscpy(psText,"-->");
		_tcscat(psText,m_pTitle[i].psTitle);
		m_pop.InsertMenu(0,MF_STRING,TITLE_0+i,psText);
	}
	
	m_pop.TrackPopupMenu(TPM_LEFTALIGN|TPM_RIGHTBUTTON,point.x,point.y,GetParent(),NULL);
	CWnd::OnRButtonDown(nFlags, point);
}



void CNewsBar::SetTitleMode(BOOL bRoll)
{
	CDC* pDC=GetDC();
	pDC->SelectObject(m_brush);
	CRect rc(32,2,50,HEIGHT_NEWSBAR);

	pDC->Rectangle(rc);

	if(bRoll)
		DrawIconEx(pDC->GetSafeHdc(),32,2,m_hIconTR,16,16,0,NULL,DI_NORMAL);
	else
		DrawIconEx(pDC->GetSafeHdc(),32,2,m_hIconTS,16,16,0,NULL,DI_NORMAL);
	m_bTitle=bRoll;
}

void CNewsBar::SetContentMode(BOOL bOn)
{
	CDC* pDC=GetDC();
	pDC->SelectObject(m_brush);
	CRect rc(50,2,66,HEIGHT_NEWSBAR);

	pDC->Rectangle(rc);

	if(bOn)
		DrawIconEx(pDC->GetSafeHdc(),50,2,m_hIconCOn,16,16,0,NULL,DI_NORMAL);
	else
		DrawIconEx(pDC->GetSafeHdc(),50,2,m_hIconCOff,16,16,0,NULL,DI_NORMAL);
	m_bContent=bOn;
}

void CNewsBar::SetTitleText(PCTSTR psTitle)
{
	CDC* pDC=GetDC();
	COLORREF white=RGB(255,255,255);
	pDC->SetBkMode(TRANSPARENT);
	pDC->SelectObject(m_brush);
	pDC->SelectObject(m_font);
	pDC->SetTextColor(white);

	CString str=psTitle;
	CRect rc(90,0,WIDTH_NEWSBAR-20,HEIGHT_NEWSBAR);
	pDC->Rectangle(rc);
	pDC->DrawText(str,&rc,DT_SINGLELINE|DT_CENTER|DT_VCENTER|DT_END_ELLIPSIS);
}

void CNewsBar::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
	// TODO: Add your message handler code here
	SetBGMode(m_bBackground);
	SetTitleMode(m_bTitle);
	SetContentMode(m_bContent);

	// Draw Icon
	dc.SelectObject(m_brush);

	// Left arrow
	CRect rc(70,2,86,HEIGHT_NEWSBAR);
	dc.Rectangle(rc);
	DrawIconEx(dc.GetSafeHdc(),70,2,m_hIconLeft,16,16,0,NULL,DI_NORMAL);

	// Right arrow
	rc=CRect(430,2,446,HEIGHT_NEWSBAR);
	dc.Rectangle(rc);
	DrawIconEx(dc.GetSafeHdc(),430,2,m_hIconRight,16,16,0,NULL,DI_NORMAL);
	
	SetTitleText(m_psText);
	// Do not call CWnd::OnPaint() for painting messages
}

void CNewsBar::OnLButtonDblClk(UINT nFlags, CPoint point) 
{
	CRect rc;

	// Background mode
	rc=CRect(2,2,30,18);
	if(PtInRect(rc,point))
	{
		;
	}

	// Switch Title mode
	rc=CRect(32,2,50,HEIGHT_NEWSBAR);
	if(PtInRect(rc,point))
	{
		GetParent()->SendMessage(ID_SWITCH_TITLE);
	}
	
	// Switch content mode
	rc=CRect(50,2,70,HEIGHT_NEWSBAR);
	if(PtInRect(rc,point))
	{
		GetParent()->SendMessage(ID_SWITCH_CONTENT);
	}

	// Title down
	rc=CRect(70, 2, 90 , HEIGHT_NEWSBAR);
	if(PtInRect(rc,point))
	{
		GetParent()->SendMessage(ID_TITLE_DOWN);
	}

	// Play current title
	rc=CRect(90,2,WIDTH_NEWSBAR-20,HEIGHT_NEWSBAR);
	if(PtInRect(rc,point))
	{
		GetParent()->SendMessage(ID_PLAY_CURTITLE);
	}

	// Title up
	rc=CRect(WIDTH_NEWSBAR-20, 2, WIDTH_NEWSBAR , HEIGHT_NEWSBAR);
	if(PtInRect(rc,point))
	{
		GetParent()->SendMessage(ID_TITLE_UP);
	}
	
	CWnd::OnLButtonDblClk(nFlags, point);
}