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/*
* Hardware cursor support for TCX
*
* Copyright 2000 by Jakub Jelinek <jakub@redhat.com>.
*
* 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, and that the name of Jakub
* Jelinek not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Jakub Jelinek makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* JAKUB JELINEK DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL JAKUB JELINEK BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
/* $XFree86$ */
#include "tcx.h"
static void TCXLoadCursorImage(ScrnInfoPtr pScrn, unsigned char *src);
static void TCXShowCursor(ScrnInfoPtr pScrn);
static void TCXHideCursor(ScrnInfoPtr pScrn);
static void TCXSetCursorPosition(ScrnInfoPtr pScrn, int x, int y);
static void TCXSetCursorColors(ScrnInfoPtr pScrn, int bg, int fg);
static void
TCXLoadCursorImage(ScrnInfoPtr pScrn, unsigned char *src)
{
TcxPtr pTcx = GET_TCX_FROM_SCRN(pScrn);
int i, x, y;
unsigned int *data = (unsigned int *)src;
pTcx->CursorData = src;
x = pTcx->CursorShiftX;
y = pTcx->CursorShiftY;
if (x >= 32 || y >= 32)
y = 32;
data += y;
for (i = 0; i < 32 - y; i++)
pTcx->thc->thc_cursmask[i] = *data++ << x;
for (; i < 32; i++)
pTcx->thc->thc_cursmask[i] = 0;
data += y;
for (i = 0; i < 32 - y; i++)
pTcx->thc->thc_cursbits[i] = *data++ << x;
for (; i < 32; i++)
pTcx->thc->thc_cursbits[i] = 0;
}
static void
TCXShowCursor(ScrnInfoPtr pScrn)
{
TcxPtr pTcx = GET_TCX_FROM_SCRN(pScrn);
pTcx->thc->thc_cursxy = pTcx->CursorXY;
pTcx->CursorEnabled = TRUE;
}
static void
TCXHideCursor(ScrnInfoPtr pScrn)
{
TcxPtr pTcx = GET_TCX_FROM_SCRN(pScrn);
pTcx->thc->thc_cursxy = ((65536 - 32) << 16) | (65536 - 32);
pTcx->CursorEnabled = FALSE;
}
static void
TCXSetCursorPosition(ScrnInfoPtr pScrn, int x, int y)
{
TcxPtr pTcx = GET_TCX_FROM_SCRN(pScrn);
int CursorShiftX = 0, CursorShiftY = 0;
if (x < 0) {
CursorShiftX = -x;
x = 0;
if (CursorShiftX > 32)
CursorShiftX = 32;
}
if (y < 0) {
CursorShiftY = -y;
y = 0;
if (CursorShiftY > 32)
CursorShiftY = 32;
}
if ((CursorShiftX != pTcx->CursorShiftX ||
CursorShiftY != pTcx->CursorShiftY) &&
pTcx->CursorData != NULL) {
pTcx->CursorShiftX = CursorShiftX;
pTcx->CursorShiftY = CursorShiftY;
TCXLoadCursorImage(pScrn, pTcx->CursorData);
}
pTcx->CursorXY = ((x & 0xffff) << 16) | (y & 0xffff);
if (pTcx->CursorEnabled)
pTcx->thc->thc_cursxy = pTcx->CursorXY;
}
static void
TCXSetCursorColors(ScrnInfoPtr pScrn, int bg, int fg)
{
TcxPtr pTcx = GET_TCX_FROM_SCRN(pScrn);
if (bg != pTcx->CursorBg || fg != pTcx->CursorFg) {
xf86SbusSetOsHwCursorCmap(pTcx->psdp, bg, fg);
pTcx->CursorBg = bg;
pTcx->CursorFg = fg;
}
}
Bool
TCXHWCursorInit(ScreenPtr pScreen)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
TcxPtr pTcx;
xf86CursorInfoPtr infoPtr;
pTcx = GET_TCX_FROM_SCRN(pScrn);
pTcx->CursorXY = 0;
pTcx->CursorBg = pTcx->CursorFg = 0;
pTcx->CursorEnabled = FALSE;
pTcx->CursorShiftX = 0;
pTcx->CursorShiftY = 0;
pTcx->CursorData = NULL;
infoPtr = xf86CreateCursorInfoRec();
if(!infoPtr) return FALSE;
pTcx->CursorInfoRec = infoPtr;
infoPtr->MaxWidth = 32;
infoPtr->MaxHeight = 32;
infoPtr->Flags = HARDWARE_CURSOR_AND_SOURCE_WITH_MASK |
HARDWARE_CURSOR_SWAP_SOURCE_AND_MASK |
HARDWARE_CURSOR_SOURCE_MASK_NOT_INTERLEAVED |
HARDWARE_CURSOR_TRUECOLOR_AT_8BPP;
infoPtr->SetCursorColors = TCXSetCursorColors;
infoPtr->SetCursorPosition = TCXSetCursorPosition;
infoPtr->LoadCursorImage = TCXLoadCursorImage;
infoPtr->HideCursor = TCXHideCursor;
infoPtr->ShowCursor = TCXShowCursor;
infoPtr->UseHWCursor = NULL;
return xf86InitCursor(pScreen, infoPtr);
}
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