winamp/Src/Plugins/Visualization/vis_milk2/menu.h

/*
  LICENSE
  -------
Copyright 2005-2013 Nullsoft, Inc.
All rights reserved.

Redistribution and use in source and binary forms, with or without modification, 
are permitted provided that the following conditions are met:

  * Redistributions of source code must retain the above copyright notice,
    this list of conditions and the following disclaimer. 

  * Redistributions in binary form must reproduce the above copyright notice,
    this list of conditions and the following disclaimer in the documentation
    and/or other materials provided with the distribution. 

  * Neither the name of Nullsoft nor the names of its contributors may be used to 
    endorse or promote products derived from this software without specific prior written permission. 
 
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR 
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 
OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef _MILKDROP_MENU_H_
#define _MILKDROP_MENU_H_ 1

//----------------------------------------

#include <arch.h>

//----------------------------------------

typedef enum {
	MENUITEMTYPE_BUNK,
	MENUITEMTYPE_BOOL, 
	MENUITEMTYPE_INT,
	MENUITEMTYPE_FLOAT, 
	MENUITEMTYPE_LOGFLOAT,
	MENUITEMTYPE_BLENDABLE, 
	MENUITEMTYPE_LOGBLENDABLE,
	MENUITEMTYPE_STRING,
    MENUITEMTYPE_UIMODE,
	//MENUITEMTYPE_OSC,
} MENUITEMTYPE;
#define MAX_CHILD_MENUS 16
typedef void (*MilkMenuCallbackFnPtr)(LPARAM param1, LPARAM param2);  // MilkMenuCallbackFnPtr is synonym for "pointer to function returning void, and taking 2 lparams"

//----------------------------------------
class CMilkMenuItem
{
public:
	CMilkMenuItem();
	~CMilkMenuItem();

	wchar_t			m_szName[64];
	wchar_t			m_szToolTip[1024];
	MENUITEMTYPE	m_type;
	float			m_fMin;						// note: has different meanings based on the MENUITEMTYPE
	float			m_fMax;						// note: has different meanings based on the MENUITEMTYPE
    unsigned int    m_wParam;
    unsigned int    m_lParam;
	MilkMenuCallbackFnPtr m_pCallbackFn;		// Callback Function pointer; if non-NULL, this functino will be called whenever the menu item is modified by the user.
	ptrdiff_t             m_var_offset;				// dist of variable's mem loc., in bytes, from pg->m_pState.
	LPARAM			m_original_value;			// can hold a float or int
	int				m_nLastCursorPos;			// for strings; remembers most recent pos. of the cursor
    bool            m_bEnabled;

	// special data used for MENUITEMTYPE_OSCILLATOR:
	//int				m_nSubSel;
	//bool			m_bEditingSubSel;

	CMilkMenuItem	*m_pNext;
};
//----------------------------------------

//----------------------------------------
class CMilkMenu
{
public:
	CMilkMenu();
	~CMilkMenu();

	void	Init(wchar_t *szName);
    void    Finish();
	void	AddChildMenu(CMilkMenu *pChildMenu);
	void	AddItem(wchar_t *szName, void *var, MENUITEMTYPE type, wchar_t *szToolTip, 
					float min=0, float max=0, MilkMenuCallbackFnPtr pCallback=NULL, 
                    unsigned int wParam=0, unsigned int lParam=0);
	void	SetParentPointer(CMilkMenu *pParentMenu) { m_pParentMenu = pParentMenu; }
	LRESULT HandleKeydown(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);	
	void	DrawMenu(RECT rect, int xR, int yB, int bCalcRect=0, RECT* pCalcRect=NULL);
	void	OnWaitStringAccept(wchar_t *szNewString);
    void    EnableItem(wchar_t* szName, bool bEnable);
    CMilkMenuItem* GetCurItem() // NOTE: ONLY WORKS IF AN *ITEM* IS HIGHLIGHTED; NOT A CHILD MENU
    {
		CMilkMenuItem *pItem = m_pFirstChildItem;
		for (int i=m_nChildMenus; i < m_nCurSel; i++) 
			pItem = pItem->m_pNext;
        return pItem;
    }
    const wchar_t* GetName() { return m_szMenuName; }
    void Enable(bool bEnabled) { m_bEnabled = bEnabled; }
    bool IsEnabled() { return m_bEnabled; }
    bool ItemIsEnabled(int i);

protected:
    void            Reset();
	CMilkMenu		*m_pParentMenu;
	CMilkMenu		*m_ppChildMenu[MAX_CHILD_MENUS];	// pointers are kept here, but these should be cleaned up by the app.
	CMilkMenuItem	*m_pFirstChildItem;		// linked list; these are dynamically allocated, and automatically cleaned up in destructor
	wchar_t			m_szMenuName[64];
	int				m_nChildMenus;
	int				m_nChildItems;
	int				m_nCurSel;    
	bool			m_bEditingCurSel;
    bool            m_bEnabled;
};
//----------------------------------------

#endif //_MILKDROP_MENU_H_