control.h

图像处理的压缩算法

/*------------------------------------------------------------------------------*
 * File Name: Control.h															*
 * Creation: TD 11/12/2002														*
 * Purpose: Origin C support for Windows controls								*
 * Copyright (c) OriginLab Corp.2002											*
 * All Rights Reserved															*
 * 																				*
 * Modification Log:															*
 *------------------------------------------------------------------------------*/
#ifndef _CONTROL_H
#define _CONTROL_H

//#include <Common.h>
//#include <String.h>
//#include <Page.h>
#include <MSWin.h>


/** >User Interface Controls
		This class is only available to OriginPro users.
	Example: 
*/
class Control : public Window
{
public:

	/**
		Example:
			Control cntl;
			cntl = MyDlg.GetItem(IDC_BUTTON1);
	*/
	Control();
	
	/**
	*/
	Control(Control& ctrl);

	/**
		Example:
			Control cntl = MyDlg.GetItem(IDC_BUTTON_OPEN);
			BOOL bRet = cntl.SetToolTip("Open File");
	*/
	BOOL SetToolTip(LPCSTR lpcszTxt);
	
	/**
		Example:
			Control cntl = MyDlg.GetItem(IDC_CHECK1);	
			cntl.Value = 1;
			ASSERT( 1 == cntl.Value );
	*/	
	int Value;
	
};

/** >User Interface Controls
		This class is only available to OriginPro users.
	Example: 
*/
class Edit : public Control
{
public:
	
	/**
	*/
	Edit();
	
	/**
	*/
	Edit(Control& ctrl);
	

	/**
		Call this function to retrieve the bounds of the current selection.
	Example:
		Edit ed = MyDlg.GetItem(IDC_EDIT1);
		long nStartChar, nEndChar;
		ed.GetSel(nStartChar, nEndChar);
	Parameters:
		nStartChar
			Zero-based index of the first character in the current selection.
		
		nEndChar
			Zero-based index of the last character in the current selection.
	Return:
		void
	SeeAlso:
		SetSel();
	*/
	void GetSel(int& nStartChar, int& nEndChar);

	/**
		Call this function to set the selection in the Edit control
	Example:
		Edit ed = MyDlg.GetItem(IDC_EDIT1);
		ed.SetSel(32000, 32000); // move to end of all text
		
	Parameters:
		nStartChar = Zero-based index of the first character in the current selection.
		nEndChar = Zero-based index of the last character in the current selection.
		bNoScroll =	Indicates whether the caret should be scrolled into view. 
		If FALSE, the caret is scrolled into view. If TRUE, the caret is not scrolled into view.
	Return:
		void
	
	SeeAlso:
		GetSel();
	*/
	void SetSel(int nStartChar, int nEndChar, BOOL bNoScroll = FALSE);
		
	/**
		Replaces the current selection in this Edit control with specified text.
	Example:
		Edit ed = MyDlg.GetItem(IDC_EDIT1);
		ed.SetSel(32000, 32000); // move to end of all text
		string str = "Sample"
		ed.ReplaceSel(str);

	Parameters:
		lpcszNewText = Pointer to a null-terminated string containing the replacement text.
		
		bCanUndo = To specify that this function can be undone, set the value of this parameter to TRUE. The default value is FALSE.
	Return:
		void
	
	SeeAlso:
		SetSel();
	*/
	void ReplaceSel(LPCTSTR lpcszNewText, BOOL bCanUndo = FALSE);

	/**
		Get index of first character in a line
	Example:
		Edit ed = MyDlg.GetItem(IDC_EDIT1);
		int nIndex = ed.LineIndex();
	Parameters:
		nLine = Contains the index value for the desired line in the text of the edit control, or contains -1. 
		If nLine is -1, it specifies the current line, that is, the line that contains the caret.

	Return:
		The character index of the line specified in nLine or -1 if the specified line number is greater then the number of lines in the edit control.

	Remarks:
		Call this function to retrieve the character index of a line within a multiple-line edit control. 
		The character index is the number of characters from the beginning of the edit control to the specified line. 

	*/
	int LineIndex( int nLine = -1 ) const;

	/**
	Example:	
		Edit ed = MyDlg.GetItem(IDC_EDIT1);
		int nLine = ed.LineFromChar();
	*/
	int LineFromChar( int nIndex = -1 ) const;

	/**
	Example:
		Edit ed = MyDlg.GetItem(IDC_EDIT1);
		int nLength = ed.LineLength();		
	*/
	int LineLength( int nLine = -1 ) const;
	
	/**
	Example:
		Edit ed = MyDlg.GetItem(IDC_EDIT1);
		int nCount = ed.GetLineCount();	
	*/
	int GetLineCount( ) const;
};	


//--------------------------------------------------------------------------
// RichEdit control
//--------------------------------------------------------------------------
typedef struct _charformat { 
  UINT     cbSize; 
  DWORD    dwMask; 
  DWORD    dwEffects; 
  LONG     yHeight; 
  LONG     yOffset; 
  COLORREF crTextColor; 
  BYTE     bCharSet; 
  BYTE     bPitchAndFamily; 
  char    szFaceName[LF_FACESIZE]; 
} CHARFORMAT;

/* CHARFORMAT masks */
#define CFM_BOLD		0x00000001
#define CFM_ITALIC		0x00000002
#define CFM_UNDERLINE	0x00000004
#define CFM_STRIKEOUT	0x00000008
#define CFM_PROTECTED	0x00000010
#define CFM_LINK		0x00000020		/* Exchange hyperlink extension */
#define CFM_SIZE		0x80000000
#define CFM_COLOR		0x40000000
#define CFM_FACE		0x20000000
#define CFM_OFFSET		0x10000000
#define CFM_CHARSET		0x08000000

/* CHARFORMAT effects */
#define CFE_BOLD		0x0001
#define CFE_ITALIC		0x0002
#define CFE_UNDERLINE	0x0004
#define CFE_STRIKEOUT	0x0008
#define CFE_PROTECTED	0x0010
#define CFE_LINK		0x0020
#define CFE_AUTOCOLOR	0x40000000		/* NOTE: this corresponds to */
										/* CFM_COLOR, which controls it */

/* Event notification masks */
#define ENM_NONE				0x00000000
#define ENM_CHANGE				0x00000001
#define ENM_UPDATE				0x00000002
#define ENM_SCROLL				0x00000004
#define ENM_KEYEVENTS			0x00010000
#define ENM_MOUSEEVENTS			0x00020000
#define ENM_REQUESTRESIZE		0x00040000
#define ENM_SELCHANGE			0x00080000
#define ENM_DROPFILES			0x00100000
#define ENM_PROTECTED			0x00200000
#define ENM_CORRECTTEXT			0x00400000		/* PenWin specific */
#define ENM_SCROLLEVENTS		0x00000008
#define ENM_DRAGDROPDONE		0x00000010

/** >User Interface Controls
		This class is only available to OriginPro users.
	Example: 
*/
class RichEdit : public Control
{
public:
	
	/**
	*/
	RichEdit();
	
	/**
	*/
	RichEdit(Control& ctrl);

	/**
			Sets the character formatting attributes in the current selection in this RichEdit control.
		Example:
			RichEdit richEdit = EditBoxes.GetItem(IDC_RICHEDIT1);
			CHARFORMAT cf; 
			cf.dwEffects = CFE_BOLD; 
			cf.dwMask = CFM_STRIKEOUT|CFM_BOLD;
			richEdit.SetSelectionCharFormat(cf);
			CHARFORMAT cfResult; 
			richEdit.GetSelectionCharFormat(cfResult);
			ASSERT((cfResult.dwMask&(CFM_STRIKEOUT|CFM_BOLD)) == (CFM_STRIKEOUT|CFM_BOLD));
			ASSERT((cfResult.dwEffects & (CFE_STRIKEOUT|CFE_BOLD) ) == CFE_BOLD);
		Parameters:
			cf = CHARFORMAT structure containing the new character
			formatting attributes for the current selection.
		Return:
			Nonzero if successful; otherwise, 0.
		Remarks:
			Call this function to set the character formatting attributes
			for the text in the current selection in this RichEdit control.
			Only the attributes specified by the dwMask member of cf are
			changed by this function.
		SeeAlso:
			RichEdit::GetSelectionCharFormat
	*/
	BOOL SetSelectionCharFormat(CHARFORMAT& cf);

	/**
			Gets the starting and ending positions of the current 
			selection in this RichEdit control.
		Example:
			RichEdit richEdit = EditBoxes.GetItem(IDC_RICHEDIT1);
			long nStartChar, nEndChar;
			richEdit.GetSel(nStartChar, nEndChar);	
			string str;
			str.Format("Start:%d, End:%d\n", nStartChar, nEndChar);
			MessageBox(NULL, str, "Rich Edit Sample");
		Parameters:
			nStartChar = Zero-based index of the first character in
			the current selection.
			nEndChar = Zero-based index of the last character in
			the current selection.
		Return:
			void
		Remarks:
			Call this function to retrieve the bounds of 
			the current selection in this RichEdit control.
		SeeAlso:
			RichEdit::SetSel
	*/
	void GetSel(long& nStartChar, long& nEndChar);

	/**
			Sets the selection in this RichEdit control.
		Example:
			RichEdit richEdit = EditBoxes.GetItem(IDC_RICHEDIT1);
			// Select the character between 0 and 10
			richEdit.SetSel(0, 10);
			long nStartChar, nEndChar;
			richEdit.GetSel(nStartChar, nEndChar);	
			ASSERT(0 == nStartChar && 10 == nEndChar);
		Parameters:
			nStartChar = Zero-based index of the first character
			in the current selection.
			nEndChar = Zero-based index of the last character
			in the current selection.
		Return:
			void
		Remarks:
			Call this function to set the selection within this RichEdit control. 
			To select all the text in this RichEdit control, call SetSel 
			with a start index of 0 and an end index of -1.
		SeeAlso:
			RichEdit::GetSel
	*/
	void SetSel(long nStartChar, long nEndChar);
		
	/**
			Replaces the current selection in this RichEdit control with specified text.
		Example:
			RichEdit richEdit = EditBoxes.GetItem(IDC_RICHEDIT1);
			richEdit.SetSel(0, -1);
			string str = "Sample";
			richEdit.ReplaceSel(str, FALSE);
			ASSERT( richEdit.Text == str );
		Parameters:
			lpszNewText = Pointer to a null-terminated string 
			containing the replacement text.
			bCanUndo = To specify that this function can be undone, 
			set the value of this parameter to TRUE. The default value is FALSE.
		Return:
			void		
		Remarks:
			Call this function to replace the current selection in this
			RichEdit control with the specified text. To replace all the
			text in this RichEdit control, use the function Text.
			If there is no current selection, the replacement text is inserted
			at the insertion point, that is, the current caret location.	
		SeeAlso:
			RichEdit::SetSel
	*/
	void ReplaceSel(LPCTSTR lpszNewText, BOOL bCanUndo = FALSE);
			
	/**
			Gets the text of the current selection in this RichEdit control
		Example:
			RichEdit richEdit = EditBoxes.GetItem(IDC_RICHEDIT1);
			richEdit.SetSel(0, -1);
			string str = richEdit.GetSelText();
			ASSERT( richEdit.Text == str );
		Parameters:
			nStartChar = Zero-based index of the first character
			in the current selection.
			nEndChar = Zero-based index of the last character
			in the current selection.
		Return:
			The string containing the current selection. 
		Remarks:
			Call this function to retrieve the text from
			the current selection in this RichEdit control.
		SeeAlso:
			none.
	*/
	string GetSelText();		
	
	/**
			Sets the read-only option for this RichEdit control
		Example:
			RichEdit richEdit = EditBoxes.GetItem(IDC_RICHEDIT1);
			richEdit.SetReadOnly(FALSE);	
		Parameters:
			bReadOnly = Indicates if this RichEdit control should be read only.
		Return:
			Nonzero if successful; otherwise, 0.
		Remarks:
			Call this member function to change the read-only
			option for this RichEdit control. 
		SeeAlso:
			none.
	*/
	BOOL SetReadOnly(BOOL bReadOnly = TRUE);

	/**
			Determines the topmost visible line in this RichEdit control. 
		Example:
			RichEdit richEdit = EditBoxes.GetItem(IDC_RICHEDIT1);
			int nFirstVisible = richEdit.GetFirstVisibleLine();
			
			// Scroll the rich edit control so that the first visible line is the first line of text.
			if (nFirstVisible > 0)
			   richEdit.LineScroll(-nFirstVisible, 0);
		Return:
			Zero-based index of the uppermost visible line in this RichEdit control.
		Remarks		
			Call this function to determine the topmost 
			visible line in this RichEdit control.
		SeeAlso:
			RichEdit::LineScroll.
	*/
	int GetFirstVisibleLine();

	/**
			Determines if the contents of this RichEdit control have changed since the last save.
		Example:
			RichEdit richEdit = EditBoxes.GetItem(IDC_RICHEDIT1);
			BOOL bModify = richEdit.GetModify();			
		Parameters:
			nStartChar = Zero-based index of the first character in the current selection.			
			nEndChar = Zero-based index of the last character in the current selection.
		Return:
			Nonzero if the text in this RichEdit control has been modified; otherwise 0.		
		Remarks
			Call this function to determine if the contents of this RichEdit
			control have been modified. Window maintains an internal flag 
			indicating whether the contents of the rich edit control
			have been changed. This flag is cleared when the edit control 
			is first created and can also be cleared by calling the 
			SetModify member function.
		SeeAlso:
			none.
	*/
	BOOL GetModify();

	/**
			Sets or clears the modification flag for this RichEdit control.
		Example:
			RichEdit richEdit = EditBoxes.GetItem(IDC_RICHEDIT1);
			richEdit.SetModify();
		Parameters:
			bModified = A value of TRUE indicates that the text has been modified, 
			and a value of FALSE indicates it is unmodified. By default, the modified flag is set.
		Return:
			void
		Remarks		
			Call this function to set or clear the modified flag for an edit control. 
			The modified flag indicates whether or not the text within the edit control
			has been modified. It is automatically set whenever the user changes the text.