haiku/headers/os/interface/Dragger.h

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/*******************************************************************************
/
/ File: Dragger.h
/
/ Description: BDragger represents a replicant "handle."
/
/ Copyright 1997-98, Be Incorporated, All Rights Reserved
/
*******************************************************************************/
#ifndef _DRAGGER_H
#define _DRAGGER_H
#include <BeBuild.h>
#include <Locker.h>
#include <List.h>
#include <View.h>
class BBitmap;
class BMessage;
class BShelf;
/*----------------------------------------------------------------*/
/*----- BDragger class -------------------------------------------*/
class BDragger : public BView {
public:
BDragger(BRect bounds,
BView *target,
uint32 rmask = B_FOLLOW_NONE,
uint32 flags = B_WILL_DRAW);
BDragger(BMessage *data);
virtual ~BDragger();
static BArchivable *Instantiate(BMessage *data);
virtual status_t Archive(BMessage *data, bool deep = true) const;
virtual void AttachedToWindow();
virtual void DetachedFromWindow();
virtual void Draw(BRect update);
virtual void MouseDown(BPoint where);
virtual void MouseUp(BPoint pt);
virtual void MouseMoved(BPoint pt, uint32 code, const BMessage *msg);
virtual void MessageReceived(BMessage *msg);
virtual void FrameMoved(BPoint new_position);
virtual void FrameResized(float new_width, float new_height);
static status_t ShowAllDraggers(); /* system wide!*/
static status_t HideAllDraggers(); /* system wide!*/
static bool AreDraggersDrawn();
virtual BHandler *ResolveSpecifier(BMessage *msg,
int32 index,
BMessage *specifier,
int32 form,
const char *property);
virtual status_t GetSupportedSuites(BMessage *data);
virtual status_t Perform(perform_code d, void *arg);
virtual void ResizeToPreferred();
virtual void GetPreferredSize(float *width, float *height);
virtual void MakeFocus(bool state = true);
virtual void AllAttached();
virtual void AllDetached();
status_t SetPopUp(BPopUpMenu *context_menu);
BPopUpMenu *PopUp() const;
bool InShelf() const;
BView *Target() const;
virtual BBitmap *DragBitmap(BPoint *offset, drawing_mode *mode);
protected:
bool IsVisibilityChanging() const;
/*----- Private or reserved -----------------------------------------*/
private:
friend class _TContainerViewFilter_;
friend class _rep_data_;
friend class BShelf;
friend void _toggle_handles_(bool);
//+virtual void _ReservedDragger1();
virtual void _ReservedDragger2();
virtual void _ReservedDragger3();
virtual void _ReservedDragger4();
BDragger &operator=(const BDragger &);
void ListManage(bool);
status_t determine_relationship();
status_t SetViewToDrag(BView *target);
void SetShelf(BShelf *);
void SetZombied(bool state);
void BuildDefaultPopUp();
void ShowPopUp(BView *target, BPoint where);
static bool sVisible;
static bool sInited;
static BLocker sLock;
static BList sList;
enum relation {
TARGET_UNKNOWN,
TARGET_IS_CHILD,
TARGET_IS_PARENT,
TARGET_IS_SIBLING
};
BView *fTarget;
relation fRelation;
BShelf *fShelf;
bool fTransition;
bool fIsZombie;
char fErrCount;
bool _unused2;
BBitmap *fBitmap;
BPopUpMenu *fPopUp;
uint32 _reserved[3]; /* was 4 */
};
/*-------------------------------------------------------------*/
/*-------------------------------------------------------------*/
#endif /* _DRAGGER_H */