padview.cpp

一个超级文本编辑器

// padview.cpp : implementation of the CPadView class
//
// This is a part of the Microsoft Foundation Classes C++ library.
// Copyright (C) 1992-1997 Microsoft Corporation
// All rights reserved.
//
// This source code is only intended as a supplement to the
// Microsoft Foundation Classes Reference and related
// electronic documentation provided with the library.
// See these sources for detailed information regarding the
// Microsoft Foundation Classes product.

#include "stdafx.h"
#include "superpad.h"
#include "padview.h"
#include "paditem.h"
#include "linkitem.h"
#include "tabstop.h"
#include <afxpriv.h>
#include <stdlib.h>

#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CPadView

IMPLEMENT_DYNCREATE(CPadView, CEditView)

BEGIN_MESSAGE_MAP(CPadView, CEditView)
	//{{AFX_MSG_MAP(CPadView)
	ON_WM_CREATE()	
	ON_COMMAND(ID_CHOOSE_FONT, OnChooseFont)
	ON_COMMAND(ID_WORD_WRAP, OnWordWrap)
	ON_UPDATE_COMMAND_UI(ID_WORD_WRAP, OnUpdateWordWrap)
	ON_WM_RBUTTONDOWN()
	ON_COMMAND(ID_CHOOSE_PRINT_FONT, OnChoosePrintFont)
	ON_COMMAND(ID_MIRROR_DISPLAY_FONT, OnMirrorDisplayFont)
	ON_UPDATE_COMMAND_UI(ID_MIRROR_DISPLAY_FONT, OnUpdateMirrorDisplayFont)
	ON_UPDATE_COMMAND_UI(ID_CHOOSE_PRINT_FONT, OnUpdateChoosePrintFont)
	ON_WM_SIZE()
	ON_CONTROL_REFLECT(EN_CHANGE, OnEditChange)
	ON_COMMAND(ID_EDIT_COPY, OnEditCopy)
	ON_COMMAND(ID_EDIT_CUT, OnEditCut)
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)

	#ifndef _MAC
		ON_COMMAND(ID_SET_TABSTOPS, OnSetTabStops)
	#endif

END_MESSAGE_MAP()

UINT CPadView::m_nDefTabStops;
UINT CPadView::m_nDefTabStopsOld;
BOOL CPadView::m_bDefWordWrap;
BOOL CPadView::m_bDefWordWrapOld;
LOGFONT NEAR CPadView::m_lfDefFont;
LOGFONT NEAR CPadView::m_lfDefFontOld;
LOGFONT NEAR CPadView::m_lfDefPrintFont;
LOGFONT NEAR CPadView::m_lfDefPrintFontOld;

/////////////////////////////////////////////////////////////////////////////
// Static initialization/termination

static TCHAR BASED_CODE szSettings[] = _T("Settings");
static TCHAR BASED_CODE szTabStops[] = _T("TabStops");
static TCHAR BASED_CODE szFont[] = _T("Font");
static TCHAR BASED_CODE szPrintFont[] = _T("PrintFont");
static TCHAR BASED_CODE szHeight[] = _T("Height");
static TCHAR BASED_CODE szWeight[] = _T("Weight");
static TCHAR BASED_CODE szItalic[] = _T("Italic");
static TCHAR BASED_CODE szUnderline[] = _T("Underline");
static TCHAR BASED_CODE szPitchAndFamily[] = _T("PitchAndFamily");
static TCHAR BASED_CODE szCharSet[] = _T("CharSet");
static TCHAR BASED_CODE szFaceName[] = _T("FaceName");
static TCHAR BASED_CODE szSystem[] = _T("System");
static TCHAR BASED_CODE szWordWrap[] = _T("WordWrap");

static void GetProfileFont(LPCTSTR szSec, LOGFONT* plf)
{
	CWinApp* pApp = AfxGetApp();
	plf->lfHeight = pApp->GetProfileInt(szSec, szHeight, 0);
	if (plf->lfHeight != 0)
	{
		plf->lfWeight = pApp->GetProfileInt(szSec, szWeight, 0);
		plf->lfItalic = (BYTE)pApp->GetProfileInt(szSec, szItalic, 0);
		plf->lfUnderline = (BYTE)pApp->GetProfileInt(szSec, szUnderline, 0);
		plf->lfPitchAndFamily = (BYTE)pApp->GetProfileInt(szSec, szPitchAndFamily, 0);
		plf->lfCharSet = (BYTE)pApp->GetProfileInt(szSec, szCharSet, DEFAULT_CHARSET);
		CString strFont = pApp->GetProfileString(szSec, szFaceName, szSystem);
		lstrcpyn((TCHAR*)plf->lfFaceName, strFont, sizeof plf->lfFaceName);
		plf->lfFaceName[sizeof plf->lfFaceName-1] = 0;
	}
}

static void WriteProfileFont(LPCTSTR szSec, const LOGFONT* plf, LOGFONT* plfOld)
{
	CWinApp* pApp = AfxGetApp();

	if (plf->lfHeight != plfOld->lfHeight)
		pApp->WriteProfileInt(szSec, szHeight, plf->lfHeight);
	if (plf->lfHeight != 0)
	{
		if (plf->lfHeight != plfOld->lfHeight)
			pApp->WriteProfileInt(szSec, szHeight, plf->lfHeight);
		if (plf->lfWeight != plfOld->lfWeight)
			pApp->WriteProfileInt(szSec, szWeight, plf->lfWeight);
		if (plf->lfItalic != plfOld->lfItalic)
			pApp->WriteProfileInt(szSec, szItalic, plf->lfItalic);
		if (plf->lfUnderline != plfOld->lfUnderline)
			pApp->WriteProfileInt(szSec, szUnderline, plf->lfUnderline);
		if (plf->lfPitchAndFamily != plfOld->lfPitchAndFamily)
			pApp->WriteProfileInt(szSec, szPitchAndFamily, plf->lfPitchAndFamily);
		if (plf->lfCharSet != plfOld->lfCharSet)
			pApp->WriteProfileInt(szSec, szCharSet, plf->lfCharSet);
		if (_tcscmp(plf->lfFaceName, plfOld->lfFaceName) != 0)
			pApp->WriteProfileString(szSec, szFaceName, (LPCTSTR)plf->lfFaceName);
	}
	*plfOld = *plf;
}

void CPadView::Initialize()
{
	CWinApp* pApp = AfxGetApp();
	m_bDefWordWrap = pApp->GetProfileInt(szSettings, szWordWrap, 0);
	m_bDefWordWrapOld = m_bDefWordWrap;
	m_nDefTabStops = pApp->GetProfileInt(szSettings, szTabStops, 8*4);
	m_nDefTabStopsOld = m_nDefTabStops;
	GetProfileFont(szFont, &m_lfDefFont);
	m_lfDefFontOld = m_lfDefFont;
	GetProfileFont(szPrintFont, &m_lfDefPrintFont);
	m_lfDefPrintFontOld = m_lfDefPrintFont;
}

void CPadView::Terminate()
{
	CWinApp* pApp = AfxGetApp();
	if (m_nDefTabStops != m_nDefTabStopsOld)
		pApp->WriteProfileInt(szSettings, szTabStops, m_nDefTabStops);
	if (m_bDefWordWrap != m_bDefWordWrapOld)
		pApp->WriteProfileInt(szSettings, szWordWrap, m_bDefWordWrap);
	WriteProfileFont(szFont, &m_lfDefFont, &m_lfDefFontOld);
	WriteProfileFont(szPrintFont, &m_lfDefPrintFont, &m_lfDefPrintFontOld);
}

/////////////////////////////////////////////////////////////////////////////
// CPadView construction/destruction

CPadView::CPadView()
{
	#ifndef _MAC
		m_nTabStops = m_nDefTabStops;
	#endif

	m_uTimerID = 0;
}

BOOL CPadView::PreCreateWindow(CREATESTRUCT& cs)
{
	if (!CEditView::PreCreateWindow(cs))
		return FALSE;

	if (m_bDefWordWrap)
		cs.style &= ~(WS_HSCROLL|ES_AUTOHSCROLL);

	return TRUE;
}

int CPadView::OnCreate(LPCREATESTRUCT lpcs)
{
	if (CEditView::OnCreate(lpcs) != 0)
		return -1;
	if (m_lfDefFont.lfHeight != 0)
	{
		m_font.CreateFontIndirect(&m_lfDefFont);
		SetFont(&m_font);
	}
	if (m_lfDefPrintFont.lfHeight != 0)
	{
		m_fontPrint.CreateFontIndirect(&m_lfDefPrintFont);
		SetPrinterFont(&m_fontPrint);
	}
	return 0;
}

/////////////////////////////////////////////////////////////////////////////
// CPadView Word Wrap support

BOOL CPadView::IsWordWrap() const
{
	return (GetStyle() & ES_AUTOHSCROLL) == 0;
}

BOOL CPadView::SetWordWrap(BOOL bWordWrap)
{
	bWordWrap = !!bWordWrap;    // make sure ==TRUE || ==FALSE
	if (IsWordWrap() == bWordWrap)
		return FALSE;

	// preserve original control's state.
	CFont* pFont = GetFont();
	int nLen = GetBufferLength();
	TCHAR* pSaveText = new TCHAR[GetBufferLength()+1];
	GetWindowText(pSaveText, nLen+1);

	// create new edit control with appropriate style and size.
	DWORD dwStyle = dwStyleDefault & ~(ES_AUTOHSCROLL|WS_HSCROLL|WS_VISIBLE);
	if (!bWordWrap)
		dwStyle |= ES_AUTOHSCROLL|WS_HSCROLL;

	CWnd* pParent = GetParent();
	CRect rect;
	GetWindowRect(rect);
	pParent->ScreenToClient(rect);
	CWnd* pFocus = GetFocus();

	UINT nID = GetDlgCtrlID();

	HWND hWnd = ::CreateWindowEx(WS_EX_CLIENTEDGE, _T("edit"), NULL, dwStyle,
		rect.left, rect.top, rect.right-rect.left, rect.bottom-rect.top,
		pParent->m_hWnd, (HMENU)nID, AfxGetInstanceHandle(), NULL);

	if (hWnd == NULL)
	{
		delete[] pSaveText;
		return FALSE;
	}

	// set the window text to nothing to make sure following set doesn't fail
	SetWindowText(NULL);

	// restore visual state
	::SetWindowText(hWnd, pSaveText);
	delete[] pSaveText;
	if (pFont != NULL)
	{
		ASSERT(pFont->m_hObject != NULL);
		::SendMessage(hWnd, WM_SETFONT, (WPARAM)pFont->m_hObject, 0);
	}

	// detach old window, attach new
	SetDlgCtrlID(nID+1);
	HWND hWndOld = Detach();
	::SetWindowLong(hWndOld, GWL_WNDPROC, (LONG)*GetSuperWndProcAddr());
	ASSERT(m_hWnd == NULL);
	SubclassWindow(hWnd);
	ASSERT(m_hWnd == hWnd);
	GetParentFrame()->SendMessage(WM_RECALCPARENT);
    
	#ifndef _MAC
		UINT nTabStops = m_nTabStops;
		GetEditCtrl().SetTabStops(nTabStops);
	#endif
	
    GetClientRect(&rect);
	SetWindowPos(NULL, 0, 0, 0, 0,
		SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|SWP_NOZORDER|SWP_SHOWWINDOW);
	SetWindowPos(NULL, 0, 0, 0, 0,
		SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|SWP_NOZORDER|SWP_DRAWFRAME);
	SetWindowPos(NULL, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE);
	UpdateWindow();

	// destroy old
	::SetWindowPos(hWndOld, NULL, 0, 0, 0, 0,
		SWP_HIDEWINDOW|SWP_NOREDRAW|SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|
		SWP_NOZORDER);
	::DestroyWindow(hWndOld);

	// restore rest of state...
	GetEditCtrl().LimitText(nMaxSize);
	if (pFocus == this)
		SetFocus();

	// notify container that doc changed
	GetDocument()->UpdateAllItems(NULL);

	ASSERT_VALID(this);
	return TRUE;
}

/////////////////////////////////////////////////////////////////////////////
// CPadView Printing support

void CPadView::OnBeginPrinting(CDC* pDC, CPrintInfo* pInfo)
{
	CEditView::OnBeginPrinting(pDC, pInfo);

	LPCTSTR pszFileName = GetDocument()->GetPathName();
	BOOL bForceSysTime = _tcschr(pszFileName, '.') == NULL;
	CTime timeSys = CTime::GetCurrentTime();
	CFileStatus status;
	CFile::GetStatus(pszFileName, status);

	if (dlgPageSetup.m_iHeaderTime != 0 || bForceSysTime)
		m_timeHeader = timeSys;
	else
		m_timeHeader = status.m_mtime;

	if (dlgPageSetup.m_iFooterTime != 0 || bForceSysTime)
		m_timeFooter = timeSys;
	else
		m_timeFooter = status.m_mtime;

	if (!pInfo->m_bPreview)
		return;

	CWaitCursor wait;
	pInfo->m_nCurPage = 0xFFFF;
	OnPrepareDC(pDC, pInfo);

	UINT nIndex = LOWORD(GetEditCtrl().GetSel());
	UINT nCurPage = 1;
	while (nCurPage < (UINT)m_aPageStart.GetSize())
	{
		if (nIndex < m_aPageStart[nCurPage])
			break;
		nCurPage++;
	}
	pInfo->m_nCurPage = nCurPage;
	pInfo->SetMaxPage(m_aPageStart.GetSize());
	m_nPreviewPage = nCurPage;
}