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Diffstat (limited to 'hw/kdrive/igs/igscurs.c')
-rw-r--r--hw/kdrive/igs/igscurs.c344
1 files changed, 344 insertions, 0 deletions
diff --git a/hw/kdrive/igs/igscurs.c b/hw/kdrive/igs/igscurs.c
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index 000000000..9c330b80f
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+++ b/hw/kdrive/igs/igscurs.c
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+/*
+ * $XFree86$
+ *
+ * Copyright © 2000 Keith Packard
+ *
+ * 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 Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Keith Packard makes no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD 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.
+ */
+
+#include "igs.h"
+#include "cursorstr.h"
+
+#define SetupCursor(s) KdScreenPriv(s); \
+ igsCardInfo(pScreenPriv); \
+ igsScreenInfo(pScreenPriv); \
+ IgsCursor *pCurPriv = &igss->cursor; \
+ IgsVga *igsvga = &igsc->igsvga
+
+static void
+_igsMoveCursor (ScreenPtr pScreen, int x, int y)
+{
+ SetupCursor(pScreen);
+ CARD8 xoff, yoff;
+
+ x -= pCurPriv->xhot;
+ xoff = 0;
+ if (x < 0)
+ {
+ xoff = -x;
+ x = 0;
+ }
+ y -= pCurPriv->yhot;
+ yoff = 0;
+ if (y < 0)
+ {
+ yoff = -y;
+ y = 0;
+ }
+
+ igsSet (igsvga, igs_sprite_x, x);
+ igsSet (igsvga, igs_sprite_preset_x, xoff);
+ igsSet (igsvga, igs_sprite_y, y);
+ igsSet (igsvga, igs_sprite_preset_y, yoff);
+}
+
+static void
+igsMoveCursor (ScreenPtr pScreen, int x, int y)
+{
+ SetupCursor (pScreen);
+
+ if (!pCurPriv->has_cursor)
+ return;
+
+ if (!pScreenPriv->enabled)
+ return;
+
+ _igsMoveCursor (pScreen, x, y);
+ VgaFlush (&igsvga->card);
+}
+
+
+static void
+igsSetCursorColors (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+ CursorPtr pCursor = pCurPriv->pCursor;
+
+ igsSetImm (igsvga, igs_cursor_write_index, 0);
+ igsSetImm (igsvga, igs_cursor_data, pCursor->backRed >> 8);
+ igsSetImm (igsvga, igs_cursor_data, pCursor->backGreen >> 8);
+ igsSetImm (igsvga, igs_cursor_data, pCursor->backBlue >> 8);
+ igsSetImm (igsvga, igs_cursor_write_index, 1);
+ igsSetImm (igsvga, igs_cursor_data, pCursor->foreRed >> 8);
+ igsSetImm (igsvga, igs_cursor_data, pCursor->foreGreen >> 8);
+ igsSetImm (igsvga, igs_cursor_data, pCursor->foreBlue >> 8);
+}
+
+#if BITMAP_BIT_ORDER == MSBFirst
+#define IgsAdjustCursor(v) { \
+ v = ((v & 0x55555555) << 1) | ((v >> 1) & 0x55555555); \
+ v = ((v & 0x33333333) << 2) | ((v >> 2) & 0x33333333); \
+ v = ((v & 0x0f0f0f0f) << 4) | ((v >> 4) & 0x0f0f0f0f); \
+ v = ((v & 0x00ff00ff) << 8) | ((v >> 8) & 0x00ff00ff); \
+ v = ((v & 0x0000ffff) <<16) | ((v >>16) & 0x0000ffff); \
+}
+#else
+#define IgsAdjustCursor(v)
+#endif
+
+#define ExplodeBits2(v) (((v) & 1) | (((v) & 2) << 1))
+#define ExplodeBits4(v) ((ExplodeBits2((v) >> 2) << 4) | \
+ (ExplodeBits2((v) & 0x3)))
+#define ExplodeBits8(v) ((ExplodeBits4((v) >> 4) << 8) | \
+ (ExplodeBits4((v) & 0xf)))
+#define ExplodeBits16(v) ((ExplodeBits8((v) >> 8) << 16) | \
+ (ExplodeBits8((v) & 0xff)))
+static void
+igsLoadCursor (ScreenPtr pScreen, int x, int y)
+{
+ SetupCursor(pScreen);
+ CursorPtr pCursor = pCurPriv->pCursor;
+ CursorBitsPtr bits = pCursor->bits;
+ int w, h;
+ CARD32 *ram, *msk, *mskLine, *src, *srcLine;
+ int i, j;
+ int cursor_address;
+ int lwsrc;
+ unsigned char ramdac_control_;
+ CARD32 offset;
+ CARD32 b0, b1;
+
+ pCurPriv->pCursor = pCursor;
+ pCurPriv->xhot = pCursor->bits->xhot;
+ pCurPriv->yhot = pCursor->bits->yhot;
+
+ /*
+ * Stick new image into cursor memory
+ */
+ ram = (CARD32 *) igss->cursor_base;
+ mskLine = (CARD32 *) bits->mask;
+ srcLine = (CARD32 *) bits->source;
+
+ h = bits->height;
+ if (h > IGS_CURSOR_HEIGHT)
+ h = IGS_CURSOR_HEIGHT;
+
+ lwsrc = BitmapBytePad(bits->width) / 4; /* words per line */
+
+ for (i = 0; i < IGS_CURSOR_HEIGHT; i++) {
+ msk = mskLine;
+ src = srcLine;
+ mskLine += lwsrc;
+ srcLine += lwsrc;
+ for (j = 0; j < IGS_CURSOR_WIDTH / 32; j++) {
+
+ CARD32 m, s;
+
+ if (i < h && j < lwsrc)
+ {
+ m = *msk++;
+ s = *src++;
+ IgsAdjustCursor(m);
+ IgsAdjustCursor(s);
+ }
+ else
+ {
+ m = 0;
+ s = 0;
+ }
+ s &= m;
+ m = ~m;
+ b0 = ExplodeBits16(s&0xffff) | (ExplodeBits16(m&0xffff)<<1);
+ b1 = ExplodeBits16(s>>16) | (ExplodeBits16(m>>16)<<1);
+ *ram++ = b0;
+ *ram++ = b1;
+ }
+ }
+
+ /* Set new color */
+ igsSetCursorColors (pScreen);
+
+ /* Set address for cursor bits */
+ offset = igss->cursor_offset;
+ offset >>= 10;
+ igsSet (igsvga, igs_sprite_addr, offset);
+
+ /* Assume TV interpolation off */
+ igsSet (igsvga, igs_hcshf, 3);
+ /* Enable the cursor */
+ igsSet (igsvga, igs_sprite_visible, 1);
+ igsSet (igsvga, igs_sprite_64x64, 1);
+ /* Move to new position */
+ _igsMoveCursor (pScreen, x, y);
+
+ VgaFlush (&igsvga->card);
+}
+
+static void
+igsUnloadCursor (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+
+ /* Disable cursor */
+ igsSet (igsvga, igs_sprite_visible, 0);
+ VgaFlush (&igsvga->card);
+}
+
+static Bool
+igsRealizeCursor (ScreenPtr pScreen, CursorPtr pCursor)
+{
+ SetupCursor(pScreen);
+
+ if (!pScreenPriv->enabled)
+ return TRUE;
+
+ /* miRecolorCursor does this */
+ if (pCurPriv->pCursor == pCursor)
+ {
+ if (pCursor)
+ {
+ int x, y;
+
+ miPointerPosition (&x, &y);
+ igsLoadCursor (pScreen, x, y);
+ }
+ }
+ return TRUE;
+}
+
+static Bool
+igsUnrealizeCursor (ScreenPtr pScreen, CursorPtr pCursor)
+{
+ return TRUE;
+}
+
+static void
+igsSetCursor (ScreenPtr pScreen, CursorPtr pCursor, int x, int y)
+{
+ SetupCursor(pScreen);
+
+ pCurPriv->pCursor = pCursor;
+
+ if (!pScreenPriv->enabled)
+ return;
+
+ if (pCursor)
+ igsLoadCursor (pScreen, x, y);
+ else
+ igsUnloadCursor (pScreen);
+}
+
+miPointerSpriteFuncRec igsPointerSpriteFuncs = {
+ igsRealizeCursor,
+ igsUnrealizeCursor,
+ igsSetCursor,
+ igsMoveCursor,
+};
+
+static void
+igsQueryBestSize (int class,
+ unsigned short *pwidth, unsigned short *pheight,
+ ScreenPtr pScreen)
+{
+ SetupCursor (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;
+ }
+}
+
+Bool
+igsCursorInit (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+
+ if (!igss->cursor_base)
+ {
+ pCurPriv->has_cursor = FALSE;
+ return FALSE;
+ }
+
+ pCurPriv->width = IGS_CURSOR_WIDTH;
+ pCurPriv->height= IGS_CURSOR_HEIGHT;
+ pScreen->QueryBestSize = igsQueryBestSize;
+ miPointerInitialize (pScreen,
+ &igsPointerSpriteFuncs,
+ &kdPointerScreenFuncs,
+ FALSE);
+ pCurPriv->has_cursor = TRUE;
+ pCurPriv->pCursor = NULL;
+ return TRUE;
+}
+
+void
+igsCursorEnable (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+
+ if (pCurPriv->has_cursor)
+ {
+ if (pCurPriv->pCursor)
+ {
+ int x, y;
+
+ miPointerPosition (&x, &y);
+ igsLoadCursor (pScreen, x, y);
+ }
+ else
+ igsUnloadCursor (pScreen);
+ }
+}
+
+void
+igsCursorDisable (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+
+ if (!pScreenPriv->enabled)
+ return;
+
+ if (pCurPriv->has_cursor)
+ {
+ if (pCurPriv->pCursor)
+ {
+ igsUnloadCursor (pScreen);
+ }
+ }
+}
+
+void
+igsCursorFini (ScreenPtr pScreen)
+{
+ SetupCursor (pScreen);
+
+ pCurPriv->pCursor = NULL;
+}
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