dmxcursor.h File Reference

#include "mipointer.h"

Data Structures
struct	_dmxCursorPriv
Defines
#define	DMX_GET_CURSOR_PRIV(_pCursor, _pScreen)
#define	DMX_SET_CURSOR_PRIV(_pCursor, _pScreen, v) dixSetPrivate(&(_pCursor)->devPrivates, CursorScreenKey(_pScreen), v)
Typedefs
typedef struct _dmxCursorPriv	dmxCursorPrivRec
typedef struct _dmxCursorPriv *	dmxCursorPrivPtr
Functions
void	dmxReInitOrigins (void)
void	dmxInitOrigins (void)
void	dmxInitOverlap (void)
void	dmxCursorNoMulti (void)
void	dmxMoveCursor (DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y)
void	dmxCheckCursor (void)
int	dmxOnScreen (int x, int y, DMXScreenInfo *dmxScreen)
void	dmxHideCursor (DMXScreenInfo *dmxScreen)
void	dmxBECreateCursor (ScreenPtr pScreen, CursorPtr pCursor)
Bool	dmxBEFreeCursor (ScreenPtr pScreen, CursorPtr pCursor)
Variables
miPointerScreenFuncRec	dmxPointerCursorFuncs
miPointerSpriteFuncRec	dmxPointerSpriteFuncs

Detailed Description

Interface for cursor support.

See also:: dmxcursor.c.

Define Documentation

#define DMX_GET_CURSOR_PRIV	(	_pCursor,
		_pScreen		)

Value:

((dmxCursorPrivPtr) \
    dixLookupPrivate(&(_pCursor)->devPrivates, CursorScreenKey(_pScreen)))

Referenced by _dmxRealizeCursor(), _dmxSetCursor(), _dmxUnrealizeCursor(), dmxBECreateCursor(), and dmxBEFreeCursor().

#define DMX_SET_CURSOR_PRIV	(	_pCursor,
		_pScreen,
		v	)	dixSetPrivate(&(_pCursor)->devPrivates, CursorScreenKey(_pScreen), v)

Referenced by _dmxRealizeCursor(), and _dmxUnrealizeCursor().

Typedef Documentation

typedef struct _dmxCursorPriv * dmxCursorPrivPtr

typedef struct _dmxCursorPriv dmxCursorPrivRec

Cursor private area.

Function Documentation

void dmxBECreateCursor	(	ScreenPtr	pScreen,
		CursorPtr	pCursor
	)

Create pCursor on the back-end associated with pScreen.

References _DMXScreenInfo::beDefVisualIndex, _DMXScreenInfo::beDisplay, _DMXScreenInfo::beNumPixmapFormats, _DMXScreenInfo::bePixmapFormats, _DMXScreenInfo::beVisuals, _dmxCursorPriv::cursor, DMX_GET_CURSOR_PRIV, dmxFatal, dmxLog(), dmxScreens, dmxSync(), _myPrivate::gc, _DMXScreenInfo::scrnDefDrawables, and _DMXScreenInfo::scrnWin.

Referenced by _dmxRealizeCursor(), and dmxBECreateResources().

Bool dmxBEFreeCursor	(	ScreenPtr	pScreen,
		CursorPtr	pCursor
	)

Free pCursor on the back-end associated with pScreen.

References _DMXScreenInfo::beDisplay, _dmxCursorPriv::cursor, DMX_GET_CURSOR_PRIV, and dmxScreens.

Referenced by _dmxUnrealizeCursor(), and dmxBEDestroyResources().

void dmxCheckCursor ( void )

This routine is called during reconfiguration to make sure the cursor is visible.

References _dmxRealizeCursor(), _dmxSetCursor(), _DMXScreenInfo::cursor, DMXDBG2, dmxFindCursor(), dmxFindFirstScreen(), dmxGetGlobalPosition(), dmxNumScreens, dmxOnScreen(), dmxScreens, _DMXScreenInfo::index, _DMXScreenInfo::rootXOrigin, and _DMXScreenInfo::rootYOrigin.

Referenced by dmxAdjustCursorBoundaries(), and dmxBackendUpdatePosition().

void dmxCursorNoMulti ( void )

Turn off support for displaying multiple cursors on overlapped back-end displays. See dmxCursorDoMultiCursors.

References dmxCursorDoMultiCursors.

Referenced by ddxProcessArgument().

void dmxHideCursor ( DMXScreenInfo * dmxScreen )

This routine is used by the backend input routines to hide the cursor on a screen that is being used for relative input.

See also:: dmxbackend.c

References _dmxSetCursor(), dmxGetGlobalPosition(), and _DMXScreenInfo::index.

Referenced by dmxBackendUpdatePosition().

void dmxInitOrigins ( void )

Initialize screen origins (and relative position). This is called for each server generation. For dynamic reconfiguration, use dmxReInitOrigins() instead.

References _DMXScreenInfo::beBPP, _DMXScreenInfo::beDepth, _DMXScreenInfo::beHeight, _DMXScreenInfo::beWidth, dmxComputeScreenOrigins(), dmxFatal, dmxLog(), dmxLogOutput(), dmxNumScreens, dmxReInitOrigins(), dmxScreens, _DMXScreenInfo::rootHeight, _DMXScreenInfo::rootWidth, _DMXScreenInfo::rootX, _DMXScreenInfo::rootXOrigin, _DMXScreenInfo::rootY, _DMXScreenInfo::rootYOrigin, _DMXScreenInfo::scrnHeight, _DMXScreenInfo::scrnWidth, _DMXScreenInfo::scrnX, _DMXScreenInfo::scrnY, _DMXScreenInfo::where, _DMXScreenInfo::whereX, and _DMXScreenInfo::whereY.

Referenced by InitOutput().

void dmxInitOverlap ( void )

Detects overlapping dmxScreens and creates circular lists. This uses an O(dmxNumScreens^2) algorithm, but dmxNumScreens is < 100 and the computation only needs to be performed for every server generation or dynamic reconfiguration .

References _DMXScreenInfo::cursorNotShared, DMXDBG6, dmxDoesOverlap(), dmxInfo, dmxIterateOverlap(), dmxLog(), dmxLogOutput(), dmxLogOutputCont(), dmxNumScreens, dmxPrintOverlap(), dmxPropertyIterate(), dmxScreens, dmxTestSameDisplay(), _DMXScreenInfo::index, _DMXScreenInfo::name, and _DMXScreenInfo::over.

Referenced by dmxAdjustCursorBoundaries(), and InitOutput().

void dmxMoveCursor	(	DeviceIntPtr	pDev,
		ScreenPtr	pScreen,
		int	x,
		int	y
	)

Move the cursor to coordinates (x, y)on pScreen. This function is usually called via dmxPointerSpriteFuncs, except during reconfiguration when the cursor is repositioned to force an update on newley overlapping screens and on screens that no longer overlap.

The coords (x,y) are in global coord space. We'll loop over the back-end screens and see if they contain the global coord. If so, call _dmxMoveCursor() (XWarpPointer) to position the pointer on that screen.

References _dmxMoveCursor(), _dmxRealizeCursor(), _dmxSetCursor(), _DMXScreenInfo::cursor, _DMXScreenInfo::cursorNotShared, _DMXScreenInfo::cursorVisible, dmxCursorDoMultiCursors, DMXDBG3, dmxFindCursor(), dmxOnScreen(), dmxScreens, _DMXScreenInfo::index, _DMXScreenInfo::over, _DMXScreenInfo::rootXOrigin, and _DMXScreenInfo::rootYOrigin.