390 lines
8.9 KiB
C
390 lines
8.9 KiB
C
/*
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* Id: tridentcurs.c,v 1.1 1999/11/02 03:54:47 keithp Exp $
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*
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* Copyright © 1999 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $XFree86: xc/programs/Xserver/hw/kdrive/trident/tridentcurs.c,v 1.6 2000/09/03 05:11:20 keithp Exp $ */
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#include "trident.h"
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#include "cursorstr.h"
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#define SetupCursor(s) KdScreenPriv(s); \
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tridentCardInfo(pScreenPriv); \
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tridentScreenInfo(pScreenPriv); \
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TridentCursor *pCurPriv = &tridents->cursor
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static void
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_tridentMoveCursor (ScreenPtr pScreen, int x, int y)
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{
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SetupCursor(pScreen);
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CARD8 xlow, xhigh, ylow, yhigh;
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CARD8 xoff, yoff;
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x -= pCurPriv->xhot;
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xoff = 0;
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if (x < 0)
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{
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xoff = -x;
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x = 0;
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}
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y -= pCurPriv->yhot;
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yoff = 0;
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if (y < 0)
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{
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yoff = -y;
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y = 0;
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}
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xlow = (CARD8) x;
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xhigh = (CARD8) (x >> 8);
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ylow = (CARD8) y;
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yhigh = (CARD8) (y >> 8);
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/* This is the recommended order to move the cursor */
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tridentWriteIndex (tridentc, 0x3d4, 0x41, xhigh);
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tridentWriteIndex (tridentc, 0x3d4, 0x40, xlow);
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tridentWriteIndex (tridentc, 0x3d4, 0x42, ylow);
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tridentWriteIndex (tridentc, 0x3d4, 0x46, xoff);
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tridentWriteIndex (tridentc, 0x3d4, 0x47, yoff);
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tridentWriteIndex (tridentc, 0x3d4, 0x43, yhigh);
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}
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static void
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tridentMoveCursor (ScreenPtr pScreen, int x, int y)
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{
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SetupCursor (pScreen);
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if (!pCurPriv->has_cursor)
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return;
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if (!pScreenPriv->enabled)
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return;
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_tridentMoveCursor (pScreen, x, y);
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}
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static void
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tridentAllocCursorColors (ScreenPtr pScreen)
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{
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SetupCursor (pScreen);
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CursorPtr pCursor = pCurPriv->pCursor;
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KdAllocateCursorPixels (pScreen, 0, pCursor,
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&pCurPriv->source, &pCurPriv->mask);
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switch (pScreenPriv->screen->fb[0].bitsPerPixel) {
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case 4:
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pCurPriv->source |= pCurPriv->source << 4;
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pCurPriv->mask |= pCurPriv->mask << 4;
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case 8:
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pCurPriv->source |= pCurPriv->source << 8;
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pCurPriv->mask |= pCurPriv->mask << 8;
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case 16:
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pCurPriv->source |= pCurPriv->source << 16;
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pCurPriv->mask |= pCurPriv->mask << 16;
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}
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}
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static void
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tridentSetCursorColors (ScreenPtr pScreen)
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{
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SetupCursor (pScreen);
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CursorPtr pCursor = pCurPriv->pCursor;
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CARD32 fg, bg;
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fg = pCurPriv->source;
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bg = pCurPriv->mask;
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tridentWriteIndex (tridentc, 0x3d4, 0x48, fg);
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tridentWriteIndex (tridentc, 0x3d4, 0x49, fg >> 8);
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tridentWriteIndex (tridentc, 0x3d4, 0x4a, fg >> 16);
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tridentWriteIndex (tridentc, 0x3d4, 0x4c, bg);
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tridentWriteIndex (tridentc, 0x3d4, 0x4d, bg >> 8);
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tridentWriteIndex (tridentc, 0x3d4, 0x4e, bg >> 16);
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}
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void
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tridentRecolorCursor (ScreenPtr pScreen, int ndef, xColorItem *pdef)
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{
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SetupCursor (pScreen);
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CursorPtr pCursor = pCurPriv->pCursor;
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xColorItem sourceColor, maskColor;
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if (!pCurPriv->has_cursor || !pCursor)
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return;
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if (!pScreenPriv->enabled)
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return;
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if (pdef)
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{
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while (ndef)
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{
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if (pdef->pixel == pCurPriv->source ||
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pdef->pixel == pCurPriv->mask)
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break;
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ndef--;
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}
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if (!ndef)
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return;
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}
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tridentAllocCursorColors (pScreen);
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tridentSetCursorColors (pScreen);
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}
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#define InvertBits32(v) { \
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v = ((v & 0x55555555) << 1) | ((v >> 1) & 0x55555555); \
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v = ((v & 0x33333333) << 2) | ((v >> 2) & 0x33333333); \
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v = ((v & 0x0f0f0f0f) << 4) | ((v >> 4) & 0x0f0f0f0f); \
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}
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static void
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tridentLoadCursor (ScreenPtr pScreen, int x, int y)
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{
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SetupCursor(pScreen);
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CursorPtr pCursor = pCurPriv->pCursor;
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CursorBitsPtr bits = pCursor->bits;
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int w, h;
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CARD32 *ram, *msk, *mskLine, *src, *srcLine;
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int i, j;
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int cursor_address;
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int lwsrc;
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unsigned char ramdac_control_;
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CARD32 offset;
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/*
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* Allocate new colors
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*/
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tridentAllocCursorColors (pScreen);
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pCurPriv->pCursor = pCursor;
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pCurPriv->xhot = pCursor->bits->xhot;
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pCurPriv->yhot = pCursor->bits->yhot;
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/*
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* Stick new image into cursor memory
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*/
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ram = (CARD32 *) tridents->cursor_base;
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mskLine = (CARD32 *) bits->mask;
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srcLine = (CARD32 *) bits->source;
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h = bits->height;
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if (h > TRIDENT_CURSOR_HEIGHT)
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h = TRIDENT_CURSOR_HEIGHT;
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lwsrc = BitmapBytePad(bits->width) / 4; /* words per line */
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for (i = 0; i < TRIDENT_CURSOR_HEIGHT; i++) {
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msk = mskLine;
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src = srcLine;
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mskLine += lwsrc;
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srcLine += lwsrc;
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for (j = 0; j < TRIDENT_CURSOR_WIDTH / 32; j++) {
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CARD32 m, s;
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#if 1
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if (i < h && j < lwsrc)
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{
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m = *msk++;
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s = *src++;
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InvertBits32(m);
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InvertBits32(s);
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}
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else
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{
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m = 0;
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s = 0;
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}
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#endif
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*ram++ = m;
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*ram++ = s;
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}
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}
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/* Set address for cursor bits */
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offset = tridents->cursor_base - (CARD8 *) tridents->screen;
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offset >>= 10;
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tridentWriteIndex (tridentc, 0x3d4, 0x44, (CARD8) (offset & 0xff));
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tridentWriteIndex (tridentc, 0x3d4, 0x45, (CARD8) (offset >> 8));
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/* Set new color */
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tridentSetCursorColors (pScreen);
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/* Enable the cursor */
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tridentWriteIndex (tridentc, 0x3d4, 0x50, 0xc1);
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/* Move to new position */
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tridentMoveCursor (pScreen, x, y);
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}
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static void
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tridentUnloadCursor (ScreenPtr pScreen)
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{
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SetupCursor (pScreen);
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/* Disable cursor */
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tridentWriteIndex (tridentc, 0x3d4, 0x50, 0);
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}
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static Bool
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tridentRealizeCursor (ScreenPtr pScreen, CursorPtr pCursor)
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{
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SetupCursor(pScreen);
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if (!pScreenPriv->enabled)
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return TRUE;
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/* miRecolorCursor does this */
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if (pCurPriv->pCursor == pCursor)
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{
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if (pCursor)
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{
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int x, y;
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miPointerPosition (&x, &y);
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tridentLoadCursor (pScreen, x, y);
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}
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}
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return TRUE;
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}
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static Bool
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tridentUnrealizeCursor (ScreenPtr pScreen, CursorPtr pCursor)
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{
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return TRUE;
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}
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static void
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tridentSetCursor (ScreenPtr pScreen, CursorPtr pCursor, int x, int y)
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{
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SetupCursor(pScreen);
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pCurPriv->pCursor = pCursor;
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if (!pScreenPriv->enabled)
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return;
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if (pCursor)
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tridentLoadCursor (pScreen, x, y);
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else
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tridentUnloadCursor (pScreen);
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}
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miPointerSpriteFuncRec tridentPointerSpriteFuncs = {
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tridentRealizeCursor,
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tridentUnrealizeCursor,
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tridentSetCursor,
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tridentMoveCursor,
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};
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static void
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tridentQueryBestSize (int class,
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unsigned short *pwidth, unsigned short *pheight,
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ScreenPtr pScreen)
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{
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SetupCursor (pScreen);
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switch (class)
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{
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case CursorShape:
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if (*pwidth > pCurPriv->width)
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*pwidth = pCurPriv->width;
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if (*pheight > pCurPriv->height)
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*pheight = pCurPriv->height;
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if (*pwidth > pScreen->width)
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*pwidth = pScreen->width;
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if (*pheight > pScreen->height)
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*pheight = pScreen->height;
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break;
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default:
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fbQueryBestSize (class, pwidth, pheight, pScreen);
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break;
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}
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}
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Bool
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tridentCursorInit (ScreenPtr pScreen)
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{
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SetupCursor (pScreen);
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if (!tridents->cursor_base)
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{
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pCurPriv->has_cursor = FALSE;
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return FALSE;
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}
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pCurPriv->width = TRIDENT_CURSOR_WIDTH;
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pCurPriv->height= TRIDENT_CURSOR_HEIGHT;
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pScreen->QueryBestSize = tridentQueryBestSize;
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miPointerInitialize (pScreen,
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&tridentPointerSpriteFuncs,
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&kdPointerScreenFuncs,
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FALSE);
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pCurPriv->has_cursor = TRUE;
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pCurPriv->pCursor = NULL;
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return TRUE;
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}
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void
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tridentCursorEnable (ScreenPtr pScreen)
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{
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SetupCursor (pScreen);
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if (pCurPriv->has_cursor)
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{
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if (pCurPriv->pCursor)
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{
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int x, y;
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miPointerPosition (&x, &y);
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tridentLoadCursor (pScreen, x, y);
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}
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else
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tridentUnloadCursor (pScreen);
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}
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}
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void
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tridentCursorDisable (ScreenPtr pScreen)
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{
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SetupCursor (pScreen);
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if (!pScreenPriv->enabled)
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return;
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if (pCurPriv->has_cursor)
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{
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if (pCurPriv->pCursor)
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{
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tridentUnloadCursor (pScreen);
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}
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}
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}
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void
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tridentCursorFini (ScreenPtr pScreen)
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{
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SetupCursor (pScreen);
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pCurPriv->pCursor = NULL;
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}
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