xref: /xsrc/external/mit/xorg-server/dist/hw/sun/sunCursor.c

/* $Xorg: sunCursor.c,v 1.4 2001/02/09 02:04:43 xorgcvs Exp $ */
/*

Copyright 1988  Sun Microsystems, Inc.
Copyright 1993, 1998  The Open Group

Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.

The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of The Open Group shall
not be used in advertising or otherwise to promote the sale, use or
other dealings in this Software without prior written authorization
from The Open Group.

*/
/* $XFree86: xc/programs/Xserver/hw/sun/sunCursor.c,v 3.6 2003/11/17 22:20:36 dawes Exp $ */

/*-
 * sunCursor.c --
 *	Functions for maintaining the Sun software cursor...
 *
 */

#define NEED_EVENTS
#include    "sun.h"
#include    "fb.h"

#ifdef FBIOGCURMAX  /* has hardware cursor kernel support */

#define sunGetCursorPrivate(pScreen) \
    (&(sunGetScreenPrivate(pScreen)->hardwareCursor))

static Bool sunRealizeCursor(DeviceIntPtr, ScreenPtr, CursorPtr);
static Bool sunUnrealizeCursor(DeviceIntPtr, ScreenPtr, CursorPtr);
static void sunCursorRepad (ScreenPtr, CursorBitsPtr, unsigned char *, unsigned char *, DDXPointPtr, int, int);
static void sunLoadCursor(ScreenPtr, CursorPtr, int, int);
static void sunSetCursor(DeviceIntPtr, ScreenPtr, CursorPtr, int, int);
static void sunMoveCursor(DeviceIntPtr, ScreenPtr, int, int);
static void sunQueryBestSize(int, unsigned short *, unsigned short *, ScreenPtr);

static Bool
sunRealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor)
{
    sunCursorPtr pCurPriv = sunGetCursorPrivate(pScreen);
    int	    x, y;

    /* miRecolorCursor does this */
    if (pCurPriv->pCursor == pCursor)
    {
	miPointerGetPosition (pDev, &x, &y);
	sunLoadCursor (pScreen, pCursor, x, y);
    }
    return TRUE;
}

static Bool
sunUnrealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor)
{
    return TRUE;
}

static void
sunCursorRepad(ScreenPtr pScreen, CursorBitsPtr bits, unsigned char *src_bits, unsigned char *dst_bits, DDXPointPtr ptSrc, int w, int h)
{
    PixmapPtr	src, dst;
    BoxRec	box;
    RegionRec	rgnDst;

    if (!(src = GetScratchPixmapHeader(pScreen, bits->width, bits->height,
				       /*bpp*/ 1, /*depth*/ 1,
				      PixmapBytePad(bits->width,1), src_bits)))
	return;
    if (!(dst = GetScratchPixmapHeader(pScreen, w, h, /*bpp*/ 1, /*depth*/ 1,
				       PixmapBytePad(w,1), dst_bits)))
    {
	FreeScratchPixmapHeader(src);
	return;
    }
    box.x1 = 0;
    box.y1 = 0;
    box.x2 = w;
    box.y2 = h;
    REGION_INIT(pScreen, &rgnDst, &box, 1);
#ifndef LOWMEMFTPT
    mfbDoBitblt(&src->drawable, &dst->drawable, GXcopy, &rgnDst, ptSrc);
#else
    cfbDoBitblt(&src->drawable, &dst->drawable, GXcopy, &rgnDst, ptSrc,
	0xFFFFFFFF);
#endif /* ifndef LOWMEMFTPT */
    REGION_UNINIT(pScreen, &rgnDst);
    FreeScratchPixmapHeader(src);
    FreeScratchPixmapHeader(dst);
}

static void
sunLoadCursor(ScreenPtr pScreen, CursorPtr pCursor, int x, int y)
{
    sunCursorPtr pCurPriv = sunGetCursorPrivate(pScreen);
    struct fbcursor fbcursor;
    int	w, h;
    unsigned char   r[2], g[2], b[2];
    DDXPointRec	ptSrc;
    unsigned char   source_temp[1024], mask_temp[1024];
#ifdef INTERNAL_VS_EXTERNAL_PADDING
    long                widthBytesLine, length;
    long                widthBytesLineProto, lengthProto;
    int			linesDone;
#endif


    fbcursor.set = FB_CUR_SETALL;
    fbcursor.enable = 1;
    fbcursor.pos.x = x;
    fbcursor.pos.y = y;
    fbcursor.hot.x = pCursor->bits->xhot;
    fbcursor.hot.y = pCursor->bits->yhot;
    r[0] = pCursor->backRed >> 8;
    g[0] = pCursor->backGreen >> 8;
    b[0] = pCursor->backBlue >> 8;
    r[1] = pCursor->foreRed >> 8;
    g[1] = pCursor->foreGreen >> 8;
    b[1] = pCursor->foreBlue >> 8;
    fbcursor.cmap.index = 0;
    fbcursor.cmap.count = 2;
    fbcursor.cmap.red = r;
    fbcursor.cmap.green = g;
    fbcursor.cmap.blue = b;
    fbcursor.image = (char *) pCursor->bits->source;
    fbcursor.mask = (char *) pCursor->bits->mask;
    w = pCursor->bits->width;
    h = pCursor->bits->height;
    if (w > pCurPriv->width || h > pCurPriv->height) {
	ptSrc.x = 0;
	ptSrc.y = 0;
	if (w > pCurPriv->width)
	    w = pCurPriv->width;
	if (h > pCurPriv->height)
	    h = pCurPriv->height;
	sunCursorRepad (pScreen, pCursor->bits, pCursor->bits->source,
			source_temp, &ptSrc, w, h);
	sunCursorRepad (pScreen, pCursor->bits, pCursor->bits->mask,
			mask_temp, &ptSrc, w, h);
	fbcursor.image = (char *) source_temp;
	fbcursor.mask = (char *) mask_temp;
    }
#ifdef INTERNAL_VS_EXTERNAL_PADDING
    widthBytesLine = BitmapBytePad(w);
    length = widthBytesLine * h;
    widthBytesLineProto = BitmapBytePadProto(w);
    lengthProto = widthBytesLineProto * h;

    /* for 64-bit server, convert image to pad to 32 bits */
    if ( widthBytesLine != widthBytesLineProto ) {
	if (widthBytesLine - widthBytesLineProto  == 4) {
		register int * sprotoPtr, * mprotoPtr;
		register int * sbufPtr, * mbufPtr;
		register int i, j;

		sbufPtr = (int *)fbcursor.image;
		mbufPtr = (int *)fbcursor.mask;
		sprotoPtr = (int *)source_temp;
		mprotoPtr = (int *)mask_temp;
		for (i=0; i<h; i++) {
			for (j=0; j<widthBytesLineProto; j+=4) {
				*sprotoPtr++ = *sbufPtr++;
				*mprotoPtr++ = *mbufPtr++;
			}
			sbufPtr++;
			mbufPtr++;
		}
	} else {
        register char * sbufPtr, * sprotoPtr;
        register char * mbufPtr, * mprotoPtr;
        register int i;

        for (i = 0,
             sbufPtr = fbcursor.image,
             sprotoPtr = source_temp,
             mbufPtr = fbcursor.mask,
             mprotoPtr = mask_temp;
             i < h;
             sbufPtr += widthBytesLine,
             sprotoPtr += widthBytesLineProto,
             mbufPtr += widthBytesLine,
             mprotoPtr += widthBytesLineProto,
             i++) {
	    if (sprotoPtr != sbufPtr)
            	memmove(sprotoPtr, sbufPtr, widthBytesLineProto);
	    if (mprotoPtr != mbufPtr)
            	memmove(mprotoPtr, mbufPtr, widthBytesLineProto);
	}
} /* else */
	fbcursor.image = (char *) source_temp;
	fbcursor.mask = (char *) mask_temp;
    }
#endif
    fbcursor.size.x = w;
    fbcursor.size.y = h;
#ifndef Lynx
    (void) ioctl (sunFbs[pScreen->myNum].fd, FBIOSCURSOR, &fbcursor);
#else
    (void) sunIoctl (&sunFbs[pScreen->myNum], FBIOSCURSOR, &fbcursor);
#endif
}

static void
sunSetCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor, int x, int y)
{
    sunCursorPtr pCurPriv = sunGetCursorPrivate(pScreen);

    if (pCursor)
    	sunLoadCursor (pScreen, pCursor, x, y);
    else
	sunDisableCursor (pScreen);
    pCurPriv->pCursor = pCursor;
}

static void
sunMoveCursor(DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y)
{
    struct fbcurpos pos;

    pos.x = x;
    pos.y = y;
#ifndef Lynx
    ioctl (sunFbs[pScreen->myNum].fd, FBIOSCURPOS, &pos);
#else
    sunIoctl (&sunFbs[pScreen->myNum], FBIOSCURPOS, &pos);
#endif
}

miPointerSpriteFuncRec sunPointerSpriteFuncs = {
    sunRealizeCursor,
    sunUnrealizeCursor,
    sunSetCursor,
    sunMoveCursor,
};

static void
sunQueryBestSize(int class, unsigned short *pwidth, unsigned short *pheight, ScreenPtr pScreen)
{
    sunCursorPtr pCurPriv = sunGetCursorPrivate(pScreen);

    switch (class)
    {
    case CursorShape:
	if (*pwidth > pCurPriv->width)
	    *pwidth = pCurPriv->width;
	if (*pheight > pCurPriv->height)
	    *pheight = pCurPriv->height;
	if (*pwidth > pScreen->width)
	    *pwidth = pScreen->width;
	if (*pheight > pScreen->height)
	    *pheight = pScreen->height;
	break;
    default:
	fbQueryBestSize (class, pwidth, pheight, pScreen);
	break;
    }
}

#endif

Bool
sunCursorInitialize(ScreenPtr pScreen)
{
#ifdef FBIOGCURMAX
    sunCursorPtr pCurPriv = sunGetCursorPrivate(pScreen);
    struct fbcurpos maxsize;

    pCurPriv->has_cursor = FALSE;
#ifndef Lynx
    if (ioctl (sunFbs[pScreen->myNum].fd, FBIOGCURMAX, &maxsize) == -1)
#else
    if (sunIoctl (&sunFbs[pScreen->myNum], FBIOGCURMAX, &maxsize) == -1)
#endif
	return FALSE;
    pCurPriv->width = maxsize.x;
    pCurPriv->height= maxsize.y;
    pScreen->QueryBestSize = sunQueryBestSize;
    miPointerInitialize (pScreen,
			 &sunPointerSpriteFuncs,
			 &sunPointerScreenFuncs,
			 FALSE);
    pCurPriv->has_cursor = TRUE;
    pCurPriv->pCursor = NULL;
    return TRUE;
#else
    return FALSE;
#endif
}

void
sunDisableCursor (ScreenPtr pScreen)
{
#ifdef FBIOGCURMAX
    sunCursorPtr pCurPriv = sunGetCursorPrivate(pScreen);
    struct fbcursor fbcursor;

    if (pCurPriv->has_cursor)
    {
    	fbcursor.set = FB_CUR_SETCUR;
    	fbcursor.enable = 0;
#ifndef Lynx
    	(void) ioctl (sunFbs[pScreen->myNum].fd, FBIOSCURSOR, &fbcursor);
#else
    	(void) sunIoctl (&sunFbs[pScreen->myNum], FBIOSCURSOR, &fbcursor);
#endif
	pCurPriv->pCursor = NULL;
    }
#endif
}