mac-rom/ProcessMgr/ScrapCoercion.h

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/*
File: ScrapCoercion.h
Contains: Process Mgr scrap coercion module header file. Scrap coercion is the
means by which the clipboard (scrap) is kept intact when switching
foreground applications.
Written by: Guido Goldinini
Copyright: <EFBFBD> 1986-1991 by Apple Computer, Inc., all rights reserved.
Change History (most recent first):
<3> 12/17/90 DFH Rename CheckForCutCopy to CheckForCutCopyMenuKey.
<2> 12/15/90 DFH Fix prototype for src_scrap_setup. Added pScrapOwner.
<0> x/xx/86 PYG New Today.
*/
#ifndef __SCRAPCOERCION__
#define __SCRAPCOERCION__
#ifndef __EVENTS__
#include <Events.h>
#endif
/* Information we keep about the SCRAPHANDLE */
typedef struct MyScrapInfo
{
long size; /* size of scrap in bytes */
Handle memHandle; /* handle to scrap in mem or 0 */
Boolean orphanedScrap; /* whether to dump memHandle after coercion */
StringPtr fileName; /* file name if on disk */
PEntryPtr pScrapOwner; /* process from whence this info sprang */
} MyScrapInfo;
/* Values for global CoercionState */
#define CS_DONE (0)
#define CS_GENERATE_DEACTIVATE1 (1)
#define CS_GENERATE_DEACTIVATE2 (2)
#define CS_GENERATE_NULLS_THEN_CMD_V (3)
#define CS_MOVE_SCRAP (4)
#define CS_GENERATE_NULLS_THEN_CMD_C (5)
#define CS_CLICK_IN_WINDOW (6)
#define CS_TAKE_DOWN_WINDOW (7)
#define CS_PRESUSPEND_DEACTIVATE (8)
#define CS_SUSPEND (9)
#define CS_RESUME (10)
#define CS_EXITING (11)
#define CS_ENTERING (12)
#define CS_INIT (13)
#define CS_EATMOUSE (14)
/* Older applications (i.e. ones that have no SIZE resource, or whose SIZE resource does
* not say acceptSuspendResumeEvents and doesActivateOnFGSwitch), must be fooled into
* a) activating or deactivating their front window, and b) posting their scrap. We do
* it by pretending like a DA came up and the user pasted (suspend) or copied (resume).
* NOTE: Somewhat strangely, this fake DA window stays in the application's WINDOWLIST
* all the while the application is in the background. Have not figured out whether
* this serves a purpose other than to prevent an additional NewWindow when bringing the
* application to the front again.
*/
#define SCRAP_COERCION_FAKE_DA_WINDOW_ID ((short) 0x8001)
/* Limits to state change efforts in scrap coercion */
#define CLICK_DA_WIND_TIMEOUT_INIT (4)
#define EAT_MOUSE_TIMEOUT (5)
#define NULL_TIMEOUT_CUTOFF (4)
#define NULL_TIMEOUT_INIT (7)
/* Values for message field in suspend or resume event records */
#define SUSPRES_MESSAGE (suspendResumeMessage << 24)
#define SUSPEND_MESSAGE (SUSPRES_MESSAGE+convertClipboardFlag)
#define RESUME_MESSAGE (SUSPRES_MESSAGE+resumeFlag)
/* Internal function prototypes */
void AddToFrontProcessQueue(PEntryPtr);
PEntryPtr PopFrontProcessQueue(void);
void RemoveFromFrontProcessQueue(PEntryPtr);
void StartForegroundSwitch(PEntryPtr);
short Coercion_State_Engine(unsigned short, EventRecord *, Ptr, Boolean);
void src_scrap_setup(void);
void PutUpFakeWindow(void);
void TakeDownFakeWindow(void);
void CheckForCutCopyMenuKey(unsigned char, short *);
void CheckForCutCopySysEditCmd(short, short *);
void OrphanScrapIntoPartition(void);
#endif __SCRAPCOERCION__