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MacWorld 1998 September
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MacZoop 1.8.3
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ZMenuBar.h
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/*************************************************************************************************
*
*
* MacZoop - "the framework for the rest of us"
*
*
*
* ZMenuBar.h -- the menubar manager object
*
*
*
*
*
* © 1996, Graham Cox
*
*
*
*
*************************************************************************************************/
#pragma once
#ifndef __ZMENUBAR__
#define __ZMENUBAR__
#include "ZComrade.h"
#include "TextStyleUtils.h"
#include <Menus.h>
class ZArray;
// structure for storing info about a menu command
typedef struct
{
long theCmd; // item's command
short menuID; // menu ID
short itemID; // item index
short cmdFlags; // associated command flags
short subMenuID; // if parent of submenu, menu we "own".
MenuHandle macMenu; // actual handle of menu that owns this command
}
MenuCmd;
// dimming options for entire menus:
enum
{
neverDim = 0,
dimCommands = 1,
dimParentItems = 2,
dimOthers = 4,
dimAll = 8,
dimTitle = 32
};
typedef unsigned char DimmingOptions;
// structure for storing info about a whole menu:
typedef struct
{
short menuID; // menu ID of the menu
short mIndex; // index into original MBAR resource
MenuHandle macMenu; // handle to the menu
DimmingOptions mDimming; // dimming flags
Boolean mIsResource; // TRUE if menu is a resource
}
MenuInfRec;
#if PRAGMA_ALIGN_SUPPORTED
#pragma options align=mac68k
#endif
// structure of CMNU resource:
typedef struct
{
short menuID;
long fill1;
short procID;
short fill2;
unsigned long flags;
char mTitle;
}
CMNUResource, *CMNUResPtr, **CMNUResHdl;
// the items in the menu follow after the title, given the length of the title as
// a number of bytes to skip forward. Each entry consists of the command item text
// followed immediately by four bytes, <icon>, <key equiv>, <mark char>, <style>,
// followed by command ID (long), followed by next item.
typedef struct
{
unsigned char iconID;
unsigned char keyEqu;
unsigned char markChar;
unsigned char iStyle;
}
CMNUEntry, *CMNUEntryPtr;
// structures used by low-level Mac menu manager:
typedef struct
{
MenuHandle theMenu;
short leftEdge;
}
mListEntry;
typedef struct
{
short lastMOffset;
short lastRightEdge;
short spare;
mListEntry mListItem[1];
}
mList, *mListPtr, **mListHdl;
#if PRAGMA_ALIGN_SUPPORTED
#pragma options align=reset
#endif
// cmd flags
enum
{
nothingSpecial = 0,
disableCmdsOnly = 1,
disableAll = 2,
disableParentItems = 4,
isPrimaryMenu = 8,
autoUnCheck = 16,
menuIsResource = 32
};
// special commands
enum
{
noCommand = 0,
parentCmd = 99
};
// constants for AppendStdItems
enum
{
appendDANames = 0,
appendFontNames
};
// constants for menu hiding:
typedef enum
{
MBAR_SHOW, // show the menubar
MBAR_HIDE, // hide the menubar
MBAR_HIDE_MOUSEAWARE // hide the menu bar unless mouse within 20 pixels of screen top
}
MBarHiding;
DEFINECLASSID( ZMenuBar, 'zmbr' );
// menubar manager class
class ZMenuBar : public ZComrade
{
protected:
short mBarID; // res ID of original MBAR resource
short mbCount; // number of items in main bar at top level
short miSeed; // index counter
short mHelpOffset; // count of items in help menu before we added any
short** mBarH; // Handle to menubar data during construction
ZArray* theMenuCmds; // array of MenuCmd structs used to map commands
ZArray* theMenus; // array of MenuInfRec structs for menu behaviours
char menuCheckChar; // character used for checking a menu item
short wmMenuID; // ID of windows menu
short mBarHeight; // saved menubar height when hidden
MBarHiding mbHiding; // menubar hiding behaviour
Boolean rbPending; // TRUE if menubar redraw called during dispatch
Boolean inDispatch; // TRUE if currently in dispatch
public:
ZMenuBar( const short barID ) : ZComrade() { classID = CLASS_ZMenuBar; mBarID = barID; };
virtual ~ZMenuBar();
virtual void InitMenuBar();
virtual void UpdateMenuBar();
virtual void ClickMenuBar( const Point mousePt );
virtual void DispatchCommand( const long mSelect );
virtual void DimMenus();
virtual void EnableCommand( const long cmd );
virtual void EnableCommand( const short menuID, const short itemID );
virtual void DisableCommand( const long cmd );
virtual void DisableCommand( const short menuID, const short itemID );
virtual void CheckCommand( const long cmd, const Boolean checkOnOff );
virtual void CheckCommand( const short menuID, const short itemID, const Boolean checkOnOff );
virtual void CheckCommand( const short menuID, Str255 itemString, const Boolean checkOnOff );
virtual void CheckCommandWithChar( const long cmd, const char checkChar );
virtual void CheckCommandWithChar( const short menuID, Str255 itemString, const char checkChar );
virtual void SetCommandText( const long cmd, Str255 aText );
virtual void SetCommandText( const short menuID, const short itemID, Str255 aText );
virtual void SetCommandText( const long cmd, const short strListID, const short strIndex );
virtual void SetCommandText( const short menuID, const short itemID, const short strListID, const short strIndex );
virtual void SetCommandTextStyle( const long cmd, Style aStyle );
virtual void SetTitleHilite( const short menuID, const Boolean state );
virtual void SetMenuDimming( const short menuID, const DimmingOptions dimOpts );
virtual void AppendMenuToBar( const short menuID );
virtual void RemoveMenuFromBar( const short menuID );
virtual void AppendStdItems( const short menuID, const short iType = appendDANames );
virtual MenuHandle FindMenuID( const short menuID );
virtual short AppendHelpItem( Str255 itemText );
// automatic "windows" menu handling:
virtual void NominateWindowsMenu( const short menuID );
inline void SetCheckMarkChar( const char aChar ) { menuCheckChar = aChar; };
inline char GetCheckMarkChar() { return menuCheckChar; };
// font, style and size menu utilities, can be called from any UpdateMenus():
virtual void UpdateStyleMenu( TEStyleRunInfo* runInfo );
virtual void UpdateFontSizeMenu( TEStyleRunInfo* runInfo );
// showing and hiding the menubar:
virtual void ShowHideMenuBar( MBarHiding mHiding, Point gMouseLoc );
virtual void ShowHideMenuBar( MBarHiding mHiding );
inline MBarHiding GetMenuBarVisState() { return mbHiding; };
virtual void SetZoomSourceToCommand( const long aCmd );
protected:
virtual void LoadMenus( const Boolean autoInstall = TRUE );
virtual void LoadMenu( const short menuID, Boolean isHMenu = FALSE, Boolean autoInstall = TRUE );
virtual void LoadCMNUMenu( const short menuID, Boolean isHMenu = FALSE, Boolean autoInstall = TRUE );
virtual void UnloadMenu( MenuHandle mH );
virtual void PredimMenu( MenuHandle theMenu );
virtual void ParseMenuItem( Str255 iText, long* aCmd );
virtual void FindMCmd( const long mSelect, MenuCmd* aCmd );
virtual void FindCommand( const long cmd, short* menuID, short* itemID );
virtual long TrackMenuBar( const Point mouse );
virtual void FindMenuInfo( const short menuID, MenuInfRec* mRec );
virtual void GetMenuTitleRect( short menuID, Rect* tRect );
};
// this object handles a menubar. By default, it calls the mac menu manager to work with the
// global menubar at the top of the main monitor, but it can be subclassed to implement other
// sorts of menubar, for example a mini-menubar in a window (this is left as an exercise!).
// This loads menus and parses the items into a list of command IDs. When the menu item is
// chosen, the associated command is looked up. This is then generally passed up the command
// chain in force at the time.
// commands are associated initially with menu items using a #character, so your TCL resources
// etc. can be used directly with this. e.g. "Open File...#12345" will result in the menu item
// "Open File..." and the command number 12345. This will also use CMNU resources (a la MacApp)
// if it can't find a MENU resource. Thus you get the best of both worlds!
extern ZMenuBar* gMenuBar;
extern short gFontMenuID;
#endif