/* $XConsortium: xf86Cursor.c,v 1.3 95/01/06 20:57:31 kaleb Exp $ */ /* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86Cursor.c,v 3.5 1995/01/28 17:03:22 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. * */ #include "X.h" #include "Xmd.h" #include "input.h" #include "mipointer.h" #include "scrnintstr.h" #include "compiler.h" #include "xf86.h" #include "xf86Procs.h" /* #include "atKeynames.h" -hv- dont need that include here */ static Bool xf86CursorOffScreen(); static void xf86CrossScreen(); static void xf86WrapCursor(); miPointerScreenFuncRec xf86PointerScreenFuncs = { xf86CursorOffScreen, xf86CrossScreen, xf86WrapCursor, }; /* * 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 + 2; 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); } /* * xf86ZoomViewport -- * Reinitialize the visual part of the screen for another modes-> */ void xf86ZoomViewport (pScreen, zoom) ScreenPtr pScreen; int zoom; { ScrnInfoPtr pScr = XF86SCRNINFO(pScreen); 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; }