/* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86Cursor.c,v 3.37 2003/11/07 22:20:17 dawes Exp $ */ /* * Copyright (c) 1994-2003 by The XFree86 Project, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Except as contained in this notice, the name of the copyright holder(s) * and author(s) shall not be used in advertising or otherwise to promote * the sale, use or other dealings in this Software without prior written * authorization from the copyright holder(s) and author(s). */ /* $XConsortium: xf86Cursor.c /main/10 1996/10/19 17:58:23 kaleb $ */ #define NEED_EVENTS #include "X.h" #include "Xmd.h" #include "input.h" #include "cursor.h" #include "mipointer.h" #include "scrnintstr.h" #include "globals.h" #include "compiler.h" #include "xf86.h" #include "xf86Priv.h" #include "xf86_OSproc.h" #ifdef XINPUT #include "XIproto.h" #include "xf86Xinput.h" #endif #ifdef XFreeXDGA #include "dgaproc.h" #endif typedef struct _xf86EdgeRec { short screen; short start; short end; DDXPointRec offset; struct _xf86EdgeRec *next; } xf86EdgeRec, *xf86EdgePtr; typedef struct { xf86EdgePtr left, right, up, down; } xf86ScreenLayoutRec, *xf86ScreenLayoutPtr; static Bool xf86CursorOffScreen(ScreenPtr *pScreen, int *x, int *y); static void xf86CrossScreen(ScreenPtr pScreen, Bool entering); static void xf86WarpCursor(ScreenPtr pScreen, int x, int y); static void xf86PointerMoved(int scrnIndex, int x, int y); static miPointerScreenFuncRec xf86PointerScreenFuncs = { xf86CursorOffScreen, xf86CrossScreen, xf86WarpCursor, #ifdef XINPUT xf86eqEnqueue, xf86eqSwitchScreen #else /* let miPointerInitialize take care of these */ NULL, NULL #endif }; static xf86ScreenLayoutRec xf86ScreenLayout[MAXSCREENS]; static Bool HardEdges; /* * xf86InitViewport -- * Initialize paning & zooming parameters, so that a driver must only * check what resolutions are possible and whether the virtual area * is valid if specified. */ void xf86InitViewport(ScrnInfoPtr pScr) { pScr->PointerMoved = xf86PointerMoved; /* * Compute the initial Viewport if necessary */ if (pScr->display) { if (pScr->display->frameX0 < 0) { pScr->frameX0 = (pScr->virtualX - pScr->modes->HDisplay) / 2; pScr->frameY0 = (pScr->virtualY - pScr->modes->VDisplay) / 2; } else { pScr->frameX0 = pScr->display->frameX0; pScr->frameY0 = pScr->display->frameY0; } } 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(ScreenPtr pScreen, int x, int y) { ScrnInfoPtr pScr = XF86SCRNINFO(pScreen); (*pScr->PointerMoved)(pScreen->myNum, x, y); } static void xf86PointerMoved(int scrnIndex, int x, int y) { Bool frameChanged = FALSE; ScrnInfoPtr pScr = xf86Screens[scrnIndex]; /* * 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->currentMode->HDisplay - 1; frameChanged = TRUE ; } if ( pScr->frameX1 < x) { pScr->frameX1 = x + 1; pScr->frameX0 = x - pScr->currentMode->HDisplay + 1; frameChanged = TRUE ; } if ( pScr->frameY0 > y) { pScr->frameY0 = y; pScr->frameY1 = y + pScr->currentMode->VDisplay - 1; frameChanged = TRUE; } if ( pScr->frameY1 < y) { pScr->frameY1 = y; pScr->frameY0 = y - pScr->currentMode->VDisplay + 1; frameChanged = TRUE; } if (frameChanged && pScr->AdjustFrame != NULL) pScr->AdjustFrame(pScr->scrnIndex, pScr->frameX0, pScr->frameY0, 0); } /* * xf86LockZoom -- * Enable/disable ZoomViewport */ void xf86LockZoom(ScreenPtr pScreen, Bool lock) { XF86SCRNINFO(pScreen)->zoomLocked = lock; } /* * xf86SwitchMode -- * This is called by both keyboard processing and the VidMode extension to * set a new mode. */ Bool xf86SwitchMode(ScreenPtr pScreen, DisplayModePtr mode) { ScrnInfoPtr pScr = XF86SCRNINFO(pScreen); ScreenPtr pCursorScreen; Bool Switched; int px, py; if (!pScr->vtSema || !mode || !pScr->SwitchMode) return FALSE; #ifdef XFreeXDGA if (DGAActive(pScr->scrnIndex)) return FALSE; #endif if (mode == pScr->currentMode) return TRUE; if (mode->HDisplay > pScreen->width || mode->VDisplay > pScreen->height) return FALSE; pCursorScreen = miPointerCurrentScreen(); if (pScreen == pCursorScreen) miPointerPosition(&px, &py); xf86EnterServerState(SETUP); Switched = (*pScr->SwitchMode)(pScr->scrnIndex, mode, 0); xf86EnterServerState(OPERATING); if (Switched) { pScr->currentMode = mode; /* * Adjust frame for new display size. */ if (pScreen == pCursorScreen) pScr->frameX0 = px - (mode->HDisplay / 2) + 1; else pScr->frameX0 = (pScr->frameX0 + pScr->frameX1 + 1 - mode->HDisplay) / 2; if (pScr->frameX0 < 0) pScr->frameX0 = 0; pScr->frameX1 = pScr->frameX0 + mode->HDisplay - 1; if (pScr->frameX1 >= pScr->virtualX) { pScr->frameX0 = pScr->virtualX - mode->HDisplay; pScr->frameX1 = pScr->virtualX - 1; } if (pScreen == pCursorScreen) pScr->frameY0 = py - (mode->VDisplay / 2) + 1; else pScr->frameY0 = (pScr->frameY0 + pScr->frameY1 + 1 - mode->VDisplay) / 2; if (pScr->frameY0 < 0) pScr->frameY0 = 0; pScr->frameY1 = pScr->frameY0 + mode->VDisplay - 1; if (pScr->frameY1 >= pScr->virtualY) { pScr->frameY0 = pScr->virtualY - mode->VDisplay; pScr->frameY1 = pScr->virtualY - 1; } } if (pScr->AdjustFrame) (*pScr->AdjustFrame)(pScr->scrnIndex, pScr->frameX0, pScr->frameY0, 0); if (pScreen == pCursorScreen) xf86WarpCursor(pScreen, px, py); return Switched; } /* * xf86ZoomViewport -- * Reinitialize the visual part of the screen for another mode. */ void xf86ZoomViewport(ScreenPtr pScreen, int zoom) { ScrnInfoPtr pScr = XF86SCRNINFO(pScreen); DisplayModePtr mode; if (pScr->zoomLocked || !(mode = pScr->currentMode)) return; do { if (zoom > 0) mode = mode->next; else mode = mode->prev; } while (mode != pScr->currentMode && !(mode->type & M_T_USERDEF)); (void)xf86SwitchMode(pScreen, mode); } static xf86EdgePtr FindEdge(xf86EdgePtr edge, int val) { while(edge && (edge->end <= val)) edge = edge->next; if(edge && (edge->start <= val)) return edge; return NULL; } /* * xf86CursorOffScreen -- * Check whether it is necessary to switch to another screen */ static Bool xf86CursorOffScreen(ScreenPtr *pScreen, int *x, int *y) { xf86EdgePtr edge; int tmp; if(screenInfo.numScreens == 1) return FALSE; if(*x < 0) { tmp = *y; if(tmp < 0) tmp = 0; if(tmp >= (*pScreen)->height) tmp = (*pScreen)->height - 1; if((edge = xf86ScreenLayout[(*pScreen)->myNum].left)) edge = FindEdge(edge, tmp); if(!edge) *x = 0; else { *x += edge->offset.x; *y += edge->offset.y; *pScreen = xf86Screens[edge->screen]->pScreen; } } if(*x >= (*pScreen)->width) { tmp = *y; if(tmp < 0) tmp = 0; if(tmp >= (*pScreen)->height) tmp = (*pScreen)->height - 1; if((edge = xf86ScreenLayout[(*pScreen)->myNum].right)) edge = FindEdge(edge, tmp); if(!edge) *x = (*pScreen)->width - 1; else { *x += edge->offset.x; *y += edge->offset.y; *pScreen = xf86Screens[edge->screen]->pScreen; } } if(*y < 0) { tmp = *x; if(tmp < 0) tmp = 0; if(tmp >= (*pScreen)->width) tmp = (*pScreen)->width - 1; if((edge = xf86ScreenLayout[(*pScreen)->myNum].up)) edge = FindEdge(edge, tmp); if(!edge) *y = 0; else { *x += edge->offset.x; *y += edge->offset.y; *pScreen = xf86Screens[edge->screen]->pScreen; } } if(*y >= (*pScreen)->height) { tmp = *x; if(tmp < 0) tmp = 0; if(tmp >= (*pScreen)->width) tmp = (*pScreen)->width - 1; if((edge = xf86ScreenLayout[(*pScreen)->myNum].down)) edge = FindEdge(edge, tmp); if(!edge) *y = (*pScreen)->height - 1; else { *x += edge->offset.x; *y += edge->offset.y; (*pScreen) = xf86Screens[edge->screen]->pScreen; } } #if 0 /* This presents problems for overlapping screens when HardEdges is used. Have to think about the logic more */ if((*x < 0) || (*x >= (*pScreen)->width) || (*y < 0) || (*y >= (*pScreen)->height)) { /* We may have crossed more than one screen */ xf86CursorOffScreen(pScreen, x, y); } #endif return TRUE; } /* * xf86CrossScreen -- * Switch to another screen */ /* NEED TO CHECK THIS */ /* ARGSUSED */ static void xf86CrossScreen (ScreenPtr pScreen, Bool entering) { #if 0 if (xf86Info.sharedMonitor) (XF86SCRNINFO(pScreen)->EnterLeaveMonitor)(entering); (XF86SCRNINFO(pScreen)->EnterLeaveCursor)(entering); #endif } /* * xf86WarpCursor -- * Warp possible to another screen */ /* ARGSUSED */ static void xf86WarpCursor (ScreenPtr pScreen, int x, int y) { int sigstate; sigstate = xf86BlockSIGIO (); miPointerWarpCursor(pScreen,x,y); xf86Info.currentScreen = pScreen; xf86UnblockSIGIO (sigstate); } void * xf86GetPointerScreenFuncs(void) { return (void *)&xf86PointerScreenFuncs; } static xf86EdgePtr AddEdge( xf86EdgePtr edge, short min, short max, short dx, short dy, short screen ){ xf86EdgePtr pEdge = edge, pPrev = NULL, pNew; while(1) { while(pEdge && (min >= pEdge->end)) { pPrev = pEdge; pEdge = pEdge->next; } if(!pEdge) { if(!(pNew = xalloc(sizeof(xf86EdgeRec)))) break; pNew->screen = screen; pNew->start = min; pNew->end = max; pNew->offset.x = dx; pNew->offset.y = dy; pNew->next = NULL; if(pPrev) pPrev->next = pNew; else edge = pNew; break; } else if (min < pEdge->start) { if(!(pNew = xalloc(sizeof(xf86EdgeRec)))) break; pNew->screen = screen; pNew->start = min; pNew->offset.x = dx; pNew->offset.y = dy; pNew->next = pEdge; if(pPrev) pPrev->next = pNew; else edge = pNew; if(max <= pEdge->start) { pNew->end = max; break; } else { pNew->end = pEdge->start; min = pEdge->end; } } else min = pEdge->end; pPrev = pEdge; pEdge = pEdge->next; if(max <= min) break; } return edge; } static void FillOutEdge(xf86EdgePtr pEdge, int limit) { xf86EdgePtr pNext; int diff; if(pEdge->start > 0) pEdge->start = 0; while((pNext = pEdge->next)) { diff = pNext->start - pEdge->end; if(diff > 0) { pEdge->end += diff >> 1; pNext->start -= diff - (diff >> 1); } pEdge = pNext; } if(pEdge->end < limit) pEdge->end = limit; } /* * xf86InitOrigins() can deal with a maximum of 32 screens * on 32 bit architectures, 64 on 64 bit architectures. */ void xf86InitOrigins(void) { unsigned long screensLeft, prevScreensLeft, mask; screenLayoutPtr screen; ScreenPtr pScreen; int x1, x2, y1, y2, left, right, top, bottom; int i, j, ref, minX, minY, min, max; xf86ScreenLayoutPtr pLayout; Bool OldStyleConfig = FALSE; /* need to have this set up with a config file option */ HardEdges = FALSE; bzero(xf86ScreenLayout, MAXSCREENS * sizeof(xf86ScreenLayoutRec)); screensLeft = prevScreensLeft = (1 << xf86NumScreens) - 1; while(1) { for(mask = screensLeft, i = 0; mask; mask >>= 1, i++) { if(!(mask & 1L)) continue; screen = &xf86ConfigLayout.screens[i]; switch(screen->where) { case PosObsolete: OldStyleConfig = TRUE; pLayout = &xf86ScreenLayout[i]; /* force edge lists */ if(screen->left) { ref = screen->left->screennum; pLayout->left = AddEdge(pLayout->left, 0, xf86Screens[i]->pScreen->height, xf86Screens[ref]->pScreen->width, 0, ref); } if(screen->right) { ref = screen->right->screennum; pScreen = xf86Screens[i]->pScreen; pLayout->right = AddEdge(pLayout->right, 0, pScreen->height, -pScreen->width, 0, ref); } if(screen->top) { ref = screen->top->screennum; pLayout->up = AddEdge(pLayout->up, 0, xf86Screens[i]->pScreen->width, 0, xf86Screens[ref]->pScreen->height, ref); } if(screen->bottom) { ref = screen->bottom->screennum; pScreen = xf86Screens[i]->pScreen; pLayout->down = AddEdge(pLayout->down, 0, pScreen->width, 0, -pScreen->height, ref); } /* we could also try to place it based on those relative locations if we wanted to */ screen->x = screen->y = 0; /* FALLTHROUGH */ case PosAbsolute: dixScreenOrigins[i].x = screen->x; dixScreenOrigins[i].y = screen->y; screensLeft &= ~(1 << i); break; case PosRelative: ref = screen->refscreen->screennum; if(screensLeft & (1 << ref)) break; dixScreenOrigins[i].x = dixScreenOrigins[ref].x + screen->x; dixScreenOrigins[i].y = dixScreenOrigins[ref].y + screen->y; screensLeft &= ~(1 << i); break; case PosRightOf: ref = screen->refscreen->screennum; if(screensLeft & (1 << ref)) break; pScreen = xf86Screens[ref]->pScreen; dixScreenOrigins[i].x = dixScreenOrigins[ref].x + pScreen->width; dixScreenOrigins[i].y = dixScreenOrigins[ref].y; screensLeft &= ~(1 << i); break; case PosLeftOf: ref = screen->refscreen->screennum; if(screensLeft & (1 << ref)) break; pScreen = xf86Screens[i]->pScreen; dixScreenOrigins[i].x = dixScreenOrigins[ref].x - pScreen->width; dixScreenOrigins[i].y = dixScreenOrigins[ref].y; screensLeft &= ~(1 << i); break; case PosBelow: ref = screen->refscreen->screennum; if(screensLeft & (1 << ref)) break; pScreen = xf86Screens[ref]->pScreen; dixScreenOrigins[i].x = dixScreenOrigins[ref].x; dixScreenOrigins[i].y = dixScreenOrigins[ref].y + pScreen->height; screensLeft &= ~(1 << i); break; case PosAbove: ref = screen->refscreen->screennum; if(screensLeft & (1 << ref)) break; pScreen = xf86Screens[i]->pScreen; dixScreenOrigins[i].x = dixScreenOrigins[ref].x; dixScreenOrigins[i].y = dixScreenOrigins[ref].y - pScreen->height; screensLeft &= ~(1 << i); break; default: ErrorF("Illegal placement keyword in Layout!\n"); break; } } if(!screensLeft) break; if(screensLeft == prevScreensLeft) { /* All the remaining screens are referencing each other. Assign a value to one of them and go through again */ i = 0; while(!((1 << i) & screensLeft)){ i++; } ref = xf86ConfigLayout.screens[i].refscreen->screennum; dixScreenOrigins[ref].x = dixScreenOrigins[ref].y = 0; screensLeft &= ~(1 << ref); } prevScreensLeft = screensLeft; } /* justify the topmost and leftmost to (0,0) */ minX = dixScreenOrigins[0].x; minY = dixScreenOrigins[0].y; for(i = 1; i < xf86NumScreens; i++) { if(dixScreenOrigins[i].x < minX) minX = dixScreenOrigins[i].x; if(dixScreenOrigins[i].y < minY) minY = dixScreenOrigins[i].y; } if (minX || minY) { for(i = 0; i < xf86NumScreens; i++) { dixScreenOrigins[i].x -= minX; dixScreenOrigins[i].y -= minY; } } /* Create the edge lists */ if(!OldStyleConfig) { for(i = 0; i < xf86NumScreens; i++) { pLayout = &xf86ScreenLayout[i]; pScreen = xf86Screens[i]->pScreen; left = dixScreenOrigins[i].x; right = left + pScreen->width; top = dixScreenOrigins[i].y; bottom = top + pScreen->height; for(j = 0; j < xf86NumScreens; j++) { if(i == j) continue; x1 = dixScreenOrigins[j].x; x2 = x1 + xf86Screens[j]->pScreen->width; y1 = dixScreenOrigins[j].y; y2 = y1 + xf86Screens[j]->pScreen->height; if((bottom > y1) && (top < y2)) { min = y1 - top; if(min < 0) min = 0; max = pScreen->height - (bottom - y2); if(max > pScreen->height) max = pScreen->height; if(((left - 1) >= x1) && ((left - 1) < x2)) pLayout->left = AddEdge(pLayout->left, min, max, dixScreenOrigins[i].x - dixScreenOrigins[j].x, dixScreenOrigins[i].y - dixScreenOrigins[j].y, j); if((right >= x1) && (right < x2)) pLayout->right = AddEdge(pLayout->right, min, max, dixScreenOrigins[i].x - dixScreenOrigins[j].x, dixScreenOrigins[i].y - dixScreenOrigins[j].y, j); } if((left < x2) && (right > x1)) { min = x1 - left; if(min < 0) min = 0; max = pScreen->width - (right - x2); if(max > pScreen->width) max = pScreen->width; if(((top - 1) >= y1) && ((top - 1) < y2)) pLayout->up = AddEdge(pLayout->up, min, max, dixScreenOrigins[i].x - dixScreenOrigins[j].x, dixScreenOrigins[i].y - dixScreenOrigins[j].y, j); if((bottom >= y1) && (bottom < y2)) pLayout->down = AddEdge(pLayout->down, min, max, dixScreenOrigins[i].x - dixScreenOrigins[j].x, dixScreenOrigins[i].y - dixScreenOrigins[j].y, j); } } } } if(!HardEdges && !OldStyleConfig) { for(i = 0; i < xf86NumScreens; i++) { pLayout = &xf86ScreenLayout[i]; pScreen = xf86Screens[i]->pScreen; if(pLayout->left) FillOutEdge(pLayout->left, pScreen->height); if(pLayout->right) FillOutEdge(pLayout->right, pScreen->height); if(pLayout->up) FillOutEdge(pLayout->up, pScreen->width); if(pLayout->down) FillOutEdge(pLayout->down, pScreen->width); } } } void xf86ReconfigureLayout(void) { int i; for (i = 0; i < MAXSCREENS; i++) { xf86ScreenLayoutPtr sl = &xf86ScreenLayout[i]; /* we don't have to zero these, xf86InitOrigins() takes care of that */ if (sl->left) xfree(sl->left); if (sl->right) xfree(sl->right); if (sl->up) xfree(sl->up); if (sl->down) xfree(sl->down); } xf86InitOrigins(); }