haiku/headers/private/interface/MenuPrivate.h

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/*
* Copyright 2006-2011, Haiku, Inc.
* Distributed under the terms of the MIT License.
*
* Authors:
* Stefano Ceccherini (stefano.ceccherini@gmail.com)
*/
#ifndef __MENU_PRIVATE_H
#define __MENU_PRIVATE_H
#include <Menu.h>
enum menu_states {
MENU_STATE_TRACKING = 0,
MENU_STATE_TRACKING_SUBMENU = 1,
MENU_STATE_KEY_TO_SUBMENU = 2,
MENU_STATE_KEY_LEAVE_SUBMENU = 3,
MENU_STATE_CLOSED = 5
};
class BBitmap;
class BMenu;
class BWindow;
namespace BPrivate {
extern const char *kEmptyMenuLabel;
class MenuPrivate {
public:
MenuPrivate(BMenu *menu);
menu_layout Layout() const;
void ItemMarked(BMenuItem *item);
void CacheFontInfo();
float FontHeight() const;
float Ascent() const;
BRect Padding() const;
void GetItemMargins(float *, float *, float *, float *) const;
int State(BMenuItem **item = NULL) const;
void Install(BWindow *window);
void Uninstall();
void SetSuper(BMenu *menu);
void SetSuperItem(BMenuItem *item);
void InvokeItem(BMenuItem *item, bool now = false);
void QuitTracking(bool thisMenuOnly = true);
static status_t CreateBitmaps();
static void DeleteBitmaps();
static const BBitmap *MenuItemShift();
static const BBitmap *MenuItemControl();
static const BBitmap *MenuItemOption();
static const BBitmap *MenuItemCommand();
static const BBitmap *MenuItemMenu();
private:
BMenu *fMenu;
static BBitmap *sMenuItemShift;
static BBitmap *sMenuItemControl;
static BBitmap *sMenuItemOption;
static BBitmap *sMenuItemAlt;
static BBitmap *sMenuItemMenu;
};
};
// Note: since sqrt is slow, we don't use it and return the square of the distance
#define square(x) ((x) * (x))
static inline float
point_distance(const BPoint &pointA, const BPoint &pointB)
{
return square(pointA.x - pointB.x) + square(pointA.y - pointB.y);
}
#undef square
#endif // __MENU_PRIVATE_H