kernel/eka/include/e32cons.h
changeset 0 a41df078684a
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-1:000000000000 0:a41df078684a
       
     1 // Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of the License "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description:
       
    14 // e32\include\e32cons.h
       
    15 // 
       
    16 //
       
    17 
       
    18 #ifndef __E32CONS_H__
       
    19 #define __E32CONS_H__
       
    20 #include <e32base.h>
       
    21 #include <e32keys.h>
       
    22 //
       
    23 
       
    24 /**
       
    25 @publishedAll
       
    26 @released
       
    27 
       
    28 Defines a default console width that can be used when creating a console.
       
    29 
       
    30 @see CConsoleBase::Create()
       
    31 */
       
    32 const TInt KDefaultConsWidth=78;
       
    33 
       
    34 /**
       
    35 @publishedAll
       
    36 @released
       
    37 
       
    38 Defines a default console height that can be used when creating a console.
       
    39 
       
    40 @see CConsoleBase::Create()
       
    41 */
       
    42 const TInt KDefaultConsHeight=18;
       
    43 
       
    44 /**
       
    45 @publishedAll
       
    46 @released
       
    47 
       
    48 Implies a full size screen console when passed as the width and height
       
    49 values when creating a console.
       
    50 
       
    51 @see CConsoleBase::Create()
       
    52 */
       
    53 const TInt KConsFullScreen=-1;
       
    54 
       
    55 
       
    56 /**
       
    57 @publishedAll
       
    58 @released
       
    59 
       
    60 Defines a set of text attributes used for consoles that support colour.
       
    61 
       
    62 @see CColorConsoleBase::SetTextAttribute().
       
    63 */
       
    64 enum TTextAttribute
       
    65 	{
       
    66 	ETextAttributeNormal,  /**< Defines the normal text attribute.   */
       
    67 	ETextAttributeBold,    /**< Defines the bold text attribute.     */
       
    68 	ETextAttributeInverse, /**< Defines the inverse text attribute.  */
       
    69 	ETextAttributeHighlight/**< Defines the highlight text attribute.*/
       
    70 	};
       
    71 
       
    72 
       
    73 /**
       
    74 @publishedAll
       
    75 @released
       
    76 
       
    77 A base class that defines a console interface.
       
    78 */
       
    79 class CConsoleBase : public CBase
       
    80 	{
       
    81 public:
       
    82 	IMPORT_C virtual ~CConsoleBase();
       
    83 	IMPORT_C TKeyCode Getch();
       
    84 	IMPORT_C void Printf(TRefByValue<const TDesC> aFmt,...);
       
    85 	IMPORT_C void SetPos(TInt aX);
       
    86 	IMPORT_C void SetPos(TInt aX,TInt aY);
       
    87 	IMPORT_C TInt WhereX() const;
       
    88 	IMPORT_C TInt WhereY() const;
       
    89 // Pure virtual
       
    90 
       
    91 
       
    92     /**
       
    93     Creates a new console window.
       
    94     
       
    95     @param aTitle The title text for the console.
       
    96                   This should not be longer than 256 characters.
       
    97     @param aSize  The size of the console window.
       
    98     
       
    99     @return KErrNone, if successful; otherwise one of the other
       
   100                       system wide error codes.
       
   101     */
       
   102 	virtual TInt Create(const TDesC &aTitle,TSize aSize) =0;
       
   103 
       
   104 	
       
   105     /**
       
   106     Gets a keystroke from the console window, asynchronously.
       
   107     
       
   108     @param aStatus The request status object.
       
   109     */
       
   110 	virtual void Read(TRequestStatus &aStatus) =0;
       
   111 	
       
   112 	
       
   113 	/**
       
   114 	Cancels any outstanding request to get a keystroke from the console window.
       
   115 	*/
       
   116 	virtual void ReadCancel() =0;
       
   117 	
       
   118 	
       
   119 	/**
       
   120 	Writes the content of the specified descriptor to the console window.
       
   121 	
       
   122 	@param aDes Descriptor containing the characters to be written to
       
   123 	            the console window.
       
   124 	*/
       
   125 	virtual void Write(const TDesC &aDes) =0;
       
   126 	
       
   127 	
       
   128 	/**
       
   129 	Gets the current cursor position relative to the console window.
       
   130 	
       
   131 	@return  The current cursor position.
       
   132 	*/
       
   133 	virtual TPoint CursorPos() const =0;
       
   134 	
       
   135 	
       
   136 	/**
       
   137     Puts the cursor at the absolute position in the window.
       
   138     
       
   139     @param aPoint The cursor position.
       
   140 	*/
       
   141 	virtual void SetCursorPosAbs(const TPoint &aPoint) =0;
       
   142 	
       
   143 	
       
   144 	/**
       
   145 	Puts the cursor at the specified position relative
       
   146 	to the current cursor position.
       
   147 	
       
   148 	@param aPoint The cursor position.
       
   149 	*/
       
   150 	virtual void SetCursorPosRel(const TPoint &aPoint) =0;
       
   151 	
       
   152 	
       
   153 	/**
       
   154 	Sets the percentage height of the cursor.
       
   155 	
       
   156     @param aPercentage The percentage height. This is a value from 0 to 100.
       
   157                        If 0 is specified, then no cursor is displayed.
       
   158 	*/
       
   159 	virtual void SetCursorHeight(TInt aPercentage) =0;
       
   160 
       
   161 	
       
   162 	/**
       
   163 	Sets a new console title.
       
   164 	
       
   165 	@param aTitle The title text for the console.
       
   166                   This should not be longer than 256 characters.
       
   167 	*/
       
   168 	virtual void SetTitle(const TDesC &aTitle) =0;
       
   169 
       
   170 	
       
   171 	/**
       
   172 	Clears the console.
       
   173 	*/
       
   174 	virtual void ClearScreen() =0;
       
   175 	
       
   176 	
       
   177 	/**
       
   178 	Clears the console from the current cursor position to
       
   179 	the end of the line.
       
   180 	*/
       
   181 	virtual void ClearToEndOfLine() =0;
       
   182 	
       
   183 	
       
   184 	/**
       
   185 	Gets the size of the console.
       
   186 	*/
       
   187 	virtual TSize ScreenSize() const =0;
       
   188 	
       
   189 	
       
   190 	/**
       
   191 	Gets the current key code value.
       
   192 	
       
   193 	@return The key code value.
       
   194 	*/
       
   195 	virtual TKeyCode KeyCode() const =0;
       
   196 	
       
   197 	/**
       
   198 	Gets the current key modifiers.
       
   199 	
       
   200 	@return The key modifiers.
       
   201 	*/
       
   202 	virtual TUint KeyModifiers() const =0;
       
   203 protected:
       
   204 	IMPORT_C CConsoleBase();
       
   205 protected:
       
   206 	IMPORT_C virtual TInt Extension_(TUint aExtensionId, TAny*& a0, TAny* a1);
       
   207 	};
       
   208 
       
   209 
       
   210 class CProxyConsole;
       
   211 
       
   212 /**
       
   213 @publishedAll
       
   214 @released
       
   215 
       
   216 Adds colour support to the basic console interface.
       
   217 */
       
   218 class CColorConsoleBase : public CConsoleBase
       
   219 	{
       
   220 public:
       
   221 
       
   222     /**
       
   223     Sets the text attribute as defined by TTextAttribute.
       
   224     
       
   225     @param anAttribute The text attribute to be set.
       
   226     */
       
   227 	virtual void SetTextAttribute(TTextAttribute /*anAttribute*/); 
       
   228 protected:
       
   229 	IMPORT_C virtual TInt Extension_(TUint aExtensionId, TAny*& a0, TAny* a1);
       
   230 
       
   231 	friend class CProxyConsole;
       
   232 	};
       
   233 //
       
   234 
       
   235 /**
       
   236 @publishedAll
       
   237 @released
       
   238 */
       
   239 extern "C" {
       
   240 IMPORT_C TAny *NewConsole();
       
   241 }
       
   242 #endif
       
   243