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-rw-r--r--hw/xfree86/common/xf86Cursor.c326
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diff --git a/hw/xfree86/common/xf86Cursor.c b/hw/xfree86/common/xf86Cursor.c
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+/* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86Cursor.c,v 3.13 1996/12/23 06:43:22 dawes Exp $ */
+/*
+ * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
+ *
+ * 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 Thomas Roell not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Thomas Roell makes no representations
+ * about the suitability of this software for any purpose. It is provided
+ * "as is" without express or implied warranty.
+ *
+ * THOMAS ROELL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THOMAS ROELL 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.
+ *
+ */
+/* $Xorg: xf86Cursor.c,v 1.3 2000/08/17 19:50:29 cpqbld Exp $ */
+
+#define NEED_EVENTS
+#include "X.h"
+#include "Xmd.h"
+#include "input.h"
+#include "cursor.h"
+#include "mipointer.h"
+#include "scrnintstr.h"
+
+#include "compiler.h"
+
+#include "xf86.h"
+#include "xf86Procs.h"
+#ifdef XFreeXDGA
+#include "Xproto.h"
+#include "extnsionst.h"
+#include "scrnintstr.h"
+#include "servermd.h"
+
+#define _XF86DGA_SERVER_
+#include "extensions/xf86dgastr.h"
+#endif
+
+#ifdef XINPUT
+#include "xf86_Config.h"
+#include "XIproto.h"
+#include "xf86Xinput.h"
+#endif
+
+/* #include "atKeynames.h" -hv- dont need that include here */
+
+
+static Bool xf86CursorOffScreen(
+#if NeedFunctionPrototypes
+ ScreenPtr *pScreen,
+ int *x,
+ int *y
+#endif
+);
+static void xf86CrossScreen(
+#if NeedFunctionPrototypes
+ ScreenPtr pScreen,
+ Bool entering
+#endif
+);
+static void xf86WrapCursor(
+#if NeedFunctionPrototypes
+ ScreenPtr pScreen,
+ int x,
+ int y
+#endif
+);
+
+miPointerScreenFuncRec xf86PointerScreenFuncs = {
+ xf86CursorOffScreen,
+ xf86CrossScreen,
+ xf86WrapCursor,
+#ifdef XINPUT
+ xf86eqEnqueue,
+#endif
+};
+
+
+
+/*
+ * xf86InitViewport --
+ * Initialize paning & zooming parameters, so that a driver must only
+ * check what resolutions are possible and whether the virtual area
+ * is valid if specifyed.
+ */
+
+void
+xf86InitViewport(pScr)
+ ScrnInfoPtr pScr;
+{
+ /*
+ * Compute the initial Viewport if necessary
+ */
+ if (pScr->frameX0 < 0)
+ {
+ pScr->frameX0 = (pScr->virtualX - pScr->modes->HDisplay) / 2;
+ pScr->frameY0 = (pScr->virtualY - pScr->modes->VDisplay) / 2;
+ }
+ pScr->frameX1 = pScr->frameX0 + pScr->modes->HDisplay - 1;
+ pScr->frameY1 = pScr->frameY0 + pScr->modes->VDisplay - 1;
+
+ /*
+ * Now adjust the initial Viewport, so it lies within the virtual area
+ */
+ if (pScr->frameX1 >= pScr->virtualX)
+ {
+ pScr->frameX0 = pScr->virtualX - pScr->modes->HDisplay;
+ pScr->frameX1 = pScr->frameX0 + pScr->modes->HDisplay - 1;
+ }
+
+ if (pScr->frameY1 >= pScr->virtualY)
+ {
+ pScr->frameY0 = pScr->virtualY - pScr->modes->VDisplay;
+ pScr->frameY1 = pScr->frameY0 + pScr->modes->VDisplay - 1;
+ }
+}
+
+
+/*
+ * xf86SetViewport --
+ * Scroll the visual part of the screen so the pointer is visible.
+ */
+
+void
+xf86SetViewport(pScreen, x, y)
+ ScreenPtr pScreen;
+ int x, y;
+{
+ Bool frameChanged = FALSE;
+ ScrnInfoPtr pScr = XF86SCRNINFO(pScreen);
+
+ /*
+ * check wether (x,y) belongs to the visual part of the screen
+ * if not, change the base of the displayed frame accoring
+ */
+ if ( pScr->frameX0 > x) {
+ pScr->frameX0 = x;
+ pScr->frameX1 = x + pScr->modes->HDisplay - 1;
+ frameChanged = TRUE ;
+ }
+
+ if ( pScr->frameX1 < x) {
+ pScr->frameX1 = x + 1;
+ pScr->frameX0 = x - pScr->modes->HDisplay + 1;
+ frameChanged = TRUE ;
+ }
+
+ if ( pScr->frameY0 > y) {
+ pScr->frameY0 = y;
+ pScr->frameY1 = y + pScr->modes->VDisplay - 1;
+ frameChanged = TRUE;
+ }
+
+ if ( pScr->frameY1 < y) {
+ pScr->frameY1 = y;
+ pScr->frameY0 = y - pScr->modes->VDisplay + 1;
+ frameChanged = TRUE;
+ }
+
+ if (frameChanged) (pScr->AdjustFrame)(pScr->frameX0, pScr->frameY0);
+}
+
+
+static Bool xf86ZoomLocked = FALSE;
+
+/*
+ * xf86LockZoom --
+ * Enable/disable ZoomViewport
+ */
+
+void
+xf86LockZoom (pScreen, lock)
+ ScreenPtr pScreen;
+ Bool lock;
+{
+ /*
+ * pScreen is currently ignored, but may be used later to enable locking
+ * of individual screens.
+ */
+
+ xf86ZoomLocked = lock;
+}
+
+/*
+ * xf86ZoomViewport --
+ * Reinitialize the visual part of the screen for another modes->
+ */
+
+void
+xf86ZoomViewport (pScreen, zoom)
+ ScreenPtr pScreen;
+ int zoom;
+{
+ ScrnInfoPtr pScr = XF86SCRNINFO(pScreen);
+
+ if (xf86ZoomLocked)
+ return;
+
+#ifdef XFreeXDGA
+ /*
+ * We should really send the mode change request to the DGA client and let
+ * it decide what to do. For now just bin the request
+ */
+ if (((ScrnInfoPtr)(xf86Info.currentScreen->devPrivates[xf86ScreenIndex].ptr))->directMode&XF86DGADirectGraphics)
+ return;
+#endif
+
+ if (pScr->modes != pScr->modes->next)
+ {
+ pScr->modes = zoom > 0 ? pScr->modes->next : pScr->modes->prev;
+
+ if ((pScr->SwitchMode)(pScr->modes))
+ {
+ /*
+ * adjust new frame for the displaysize
+ */
+ pScr->frameX0 = (pScr->frameX1 + pScr->frameX0 -pScr->modes->HDisplay)/2;
+ pScr->frameX1 = pScr->frameX0 + pScr->modes->HDisplay - 1;
+
+ if (pScr->frameX0 < 0)
+ {
+ pScr->frameX0 = 0;
+ pScr->frameX1 = pScr->frameX0 + pScr->modes->HDisplay - 1;
+ }
+ else if (pScr->frameX1 >= pScr->virtualX)
+ {
+ pScr->frameX0 = pScr->virtualX - pScr->modes->HDisplay;
+ pScr->frameX1 = pScr->frameX0 + pScr->modes->HDisplay - 1;
+ }
+
+ pScr->frameY0 = (pScr->frameY1 + pScr->frameY0 - pScr->modes->VDisplay)/2;
+ pScr->frameY1 = pScr->frameY0 + pScr->modes->VDisplay - 1;
+
+ if (pScr->frameY0 < 0)
+ {
+ pScr->frameY0 = 0;
+ pScr->frameY1 = pScr->frameY0 + pScr->modes->VDisplay - 1;
+ }
+ else if (pScr->frameY1 >= pScr->virtualY)
+ {
+ pScr->frameY0 = pScr->virtualY - pScr->modes->VDisplay;
+ pScr->frameY1 = pScr->frameY0 + pScr->modes->VDisplay - 1;
+ }
+ }
+ else /* switch failed, so go back to old mode */
+ pScr->modes = zoom > 0 ? pScr->modes->prev : pScr->modes->next;
+ }
+
+ (pScr->AdjustFrame)(pScr->frameX0, pScr->frameY0);
+}
+
+
+
+/*
+ * xf86CursorOffScreen --
+ * Check whether it is necessary to switch to another screen
+ */
+
+/* ARGSUSED */
+static Bool
+xf86CursorOffScreen (pScreen, x, y)
+ ScreenPtr *pScreen;
+ int *x, *y;
+{
+ int i;
+
+ if ((screenInfo.numScreens > 1) && ((*x < 0) || ((*pScreen)->width <= *x))) {
+ i = (*pScreen)->myNum;
+ if (*x < 0) {
+ i = (i ? i : screenInfo.numScreens) -1;
+ *pScreen = screenInfo.screens[i];
+ *x += (*pScreen)->width;
+ }
+ else {
+ *x -= (*pScreen)->width;
+ i = (i+1) % screenInfo.numScreens;
+ *pScreen = screenInfo.screens[i];
+ }
+ return(TRUE);
+ }
+ return(FALSE);
+}
+
+
+
+/*
+ * xf86CrossScreen --
+ * Switch to another screen
+ */
+
+/* ARGSUSED */
+static void
+xf86CrossScreen (pScreen, entering)
+ ScreenPtr pScreen;
+ Bool entering;
+{
+ if (xf86Info.sharedMonitor)
+ (XF86SCRNINFO(pScreen)->EnterLeaveMonitor)(entering);
+ (XF86SCRNINFO(pScreen)->EnterLeaveCursor)(entering);
+}
+
+
+/*
+ * xf86WrapCursor --
+ * Wrap possible to another screen
+ */
+
+/* ARGSUSED */
+static void
+xf86WrapCursor (pScreen, x, y)
+ ScreenPtr pScreen;
+ int x,y;
+{
+ miPointerWarpCursor(pScreen,x,y);
+
+ xf86Info.currentScreen = pScreen;
+}
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