/* * 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). */ #ifdef HAVE_XORG_CONFIG_H #include #endif #include #include #include "input.h" #include "cursor.h" #include "mipointer.h" #include "scrnintstr.h" #include "globals.h" #include "xf86.h" #include "xf86Priv.h" #include "xf86_OSproc.h" #include #include "xf86Xinput.h" #ifdef XFreeXDGA #include "dgaproc.h" #include "dgaproc_priv.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(DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y); static void xf86PointerMoved(ScrnInfoPtr pScrn, int x, int y); static miPointerScreenFuncRec xf86PointerScreenFuncs = { xf86CursorOffScreen, xf86CrossScreen, xf86WarpCursor, }; static xf86ScreenLayoutRec xf86ScreenLayout[MAXSCREENS]; /* * 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 = xf86ScreenToScrn(pScreen); (*pScr->PointerMoved) (pScr, x, y); } static void xf86PointerMoved(ScrnInfoPtr pScr, int x, int y) { Bool frameChanged = FALSE; /* * check whether (x,y) belongs to the visual part of the screen * if not, change the base of the displayed frame occurring */ 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, pScr->frameX0, pScr->frameY0); } /* * xf86LockZoom -- * Enable/disable ZoomViewport */ void xf86LockZoom(ScreenPtr pScreen, Bool lock) { ScrnInfoPtr pScr = xf86ScreenToScrn(pScreen); pScr->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 = xf86ScreenToScrn(pScreen); ScreenPtr pCursorScreen; Bool Switched; int px, py; DeviceIntPtr dev, it; 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 > pScr->virtualX || mode->VDisplay > pScr->virtualY) return FALSE; /* Let's take an educated guess for which pointer to take here. And about as educated as it gets is to take the first pointer we find. */ for (dev = inputInfo.devices; dev; dev = dev->next) { if (IsPointerDevice(dev) && dev->spriteInfo->spriteOwner) break; } pCursorScreen = miPointerGetScreen(dev); if (pScreen == pCursorScreen) miPointerGetPosition(dev, &px, &py); input_lock(); Switched = (*pScr->SwitchMode) (pScr, mode); if (Switched) { pScr->currentMode = mode; /* * Adjust frame for new display size. * Frame is centered around cursor position if cursor is on same screen. */ 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; } } input_unlock(); if (pScr->AdjustFrame) (*pScr->AdjustFrame) (pScr, pScr->frameX0, pScr->frameY0); /* The original code centered the frame around the cursor if possible. * Since this is hard to achieve with multiple cursors, we do the following: * - center around the first pointer * - move all other pointers to the nearest edge on the screen (or leave * them unmodified if they are within the boundaries). */ if (pScreen == pCursorScreen) { xf86WarpCursor(dev, pScreen, px, py); } for (it = inputInfo.devices; it; it = it->next) { if (it == dev) continue; if (IsPointerDevice(it) && it->spriteInfo->spriteOwner) { pCursorScreen = miPointerGetScreen(it); if (pScreen == pCursorScreen) { miPointerGetPosition(it, &px, &py); if (px < pScr->frameX0) px = pScr->frameX0; else if (px > pScr->frameX1) px = pScr->frameX1; if (py < pScr->frameY0) py = pScr->frameY0; else if (py > pScr->frameY1) py = pScr->frameY1; xf86WarpCursor(it, pScreen, px, py); } } } return Switched; } /* * xf86ZoomViewport -- * Reinitialize the visual part of the screen for another mode. */ void xf86ZoomViewport(ScreenPtr pScreen, int zoom) { ScrnInfoPtr pScr = xf86ScreenToScrn(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; } } return TRUE; } /* * xf86CrossScreen -- * Switch to another screen * * Currently nothing special happens, but mi assumes the CrossScreen * method exists. */ static void xf86CrossScreen(ScreenPtr pScreen, Bool entering) { } /* * xf86WarpCursor -- * Warp possible to another screen */ /* ARGSUSED */ static void xf86WarpCursor(DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y) { input_lock(); miPointerWarpCursor(pDev, pScreen, x, y); xf86Info.currentScreen = pScreen; input_unlock(); } 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 = malloc(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 = malloc(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, refScreen; int x1, x2, y1, y2, left, right, top, bottom; int i, j, ref, minX, minY, min, max; xf86ScreenLayoutPtr pLayout; Bool OldStyleConfig = FALSE; memset(xf86ScreenLayout, 0, 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]; if (screen->refscreen != NULL && screen->refscreen->screennum >= xf86NumScreens) { screensLeft &= ~(1 << i); xf86Msg(X_WARNING, "Not including screen \"%s\" in origins calculation.\n", screen->screen->id); continue; } pScreen = xf86Screens[i]->pScreen; switch (screen->where) { case PosObsolete: OldStyleConfig = TRUE; pLayout = &xf86ScreenLayout[i]; /* force edge lists */ if (screen->left) { ref = screen->left->screennum; if (!xf86Screens[ref] || !xf86Screens[ref]->pScreen) { ErrorF("Referenced uninitialized screen in Layout!\n"); break; } pLayout->left = AddEdge(pLayout->left, 0, pScreen->height, xf86Screens[ref]->pScreen->width, 0, ref); } if (screen->right) { ref = screen->right->screennum; if (!xf86Screens[ref] || !xf86Screens[ref]->pScreen) { ErrorF("Referenced uninitialized screen in Layout!\n"); break; } pLayout->right = AddEdge(pLayout->right, 0, pScreen->height, -pScreen->width, 0, ref); } if (screen->top) { ref = screen->top->screennum; if (!xf86Screens[ref] || !xf86Screens[ref]->pScreen) { ErrorF("Referenced uninitialized screen in Layout!\n"); break; } pLayout->up = AddEdge(pLayout->up, 0, pScreen->width, 0, xf86Screens[ref]->pScreen->height, ref); } if (screen->bottom) { ref = screen->bottom->screennum; if (!xf86Screens[ref] || !xf86Screens[ref]->pScreen) { ErrorF("Referenced uninitialized screen in Layout!\n"); break; } 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: pScreen->x = screen->x; pScreen->y = screen->y; screensLeft &= ~(1 << i); break; case PosRelative: ref = screen->refscreen->screennum; if (!xf86Screens[ref] || !xf86Screens[ref]->pScreen) { ErrorF("Referenced uninitialized screen in Layout!\n"); break; } if (screensLeft & (1 << ref)) break; refScreen = xf86Screens[ref]->pScreen; pScreen->x = refScreen->x + screen->x; pScreen->y = refScreen->y + screen->y; screensLeft &= ~(1 << i); break; case PosRightOf: ref = screen->refscreen->screennum; if (!xf86Screens[ref] || !xf86Screens[ref]->pScreen) { ErrorF("Referenced uninitialized screen in Layout!\n"); break; } if (screensLeft & (1 << ref)) break; refScreen = xf86Screens[ref]->pScreen; pScreen->x = refScreen->x + refScreen->width; pScreen->y = refScreen->y; screensLeft &= ~(1 << i); break; case PosLeftOf: ref = screen->refscreen->screennum; if (!xf86Screens[ref] || !xf86Screens[ref]->pScreen) { ErrorF("Referenced uninitialized screen in Layout!\n"); break; } if (screensLeft & (1 << ref)) break; refScreen = xf86Screens[ref]->pScreen; pScreen->x = refScreen->x - pScreen->width; pScreen->y = refScreen->y; screensLeft &= ~(1 << i); break; case PosBelow: ref = screen->refscreen->screennum; if (!xf86Screens[ref] || !xf86Screens[ref]->pScreen) { ErrorF("Referenced uninitialized screen in Layout!\n"); break; } if (screensLeft & (1 << ref)) break; refScreen = xf86Screens[ref]->pScreen; pScreen->x = refScreen->x; pScreen->y = refScreen->y + refScreen->height; screensLeft &= ~(1 << i); break; case PosAbove: ref = screen->refscreen->screennum; if (!xf86Screens[ref] || !xf86Screens[ref]->pScreen) { ErrorF("Referenced uninitialized screen in Layout!\n"); break; } if (screensLeft & (1 << ref)) break; refScreen = xf86Screens[ref]->pScreen; pScreen->x = refScreen->x; pScreen->y = refScreen->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; xf86Screens[ref]->pScreen->x = xf86Screens[ref]->pScreen->y = 0; screensLeft &= ~(1 << ref); } prevScreensLeft = screensLeft; } /* justify the topmost and leftmost to (0,0) */ minX = xf86Screens[0]->pScreen->x; minY = xf86Screens[0]->pScreen->y; for (i = 1; i < xf86NumScreens; i++) { if (xf86Screens[i]->pScreen->x < minX) minX = xf86Screens[i]->pScreen->x; if (xf86Screens[i]->pScreen->y < minY) minY = xf86Screens[i]->pScreen->y; } if (minX || minY) { for (i = 0; i < xf86NumScreens; i++) { xf86Screens[i]->pScreen->x -= minX; xf86Screens[i]->pScreen->y -= minY; } } /* Create the edge lists */ if (!OldStyleConfig) { for (i = 0; i < xf86NumScreens; i++) { pLayout = &xf86ScreenLayout[i]; pScreen = xf86Screens[i]->pScreen; left = pScreen->x; right = left + pScreen->width; top = pScreen->y; bottom = top + pScreen->height; for (j = 0; j < xf86NumScreens; j++) { if (i == j) continue; refScreen = xf86Screens[j]->pScreen; x1 = refScreen->x; x2 = x1 + refScreen->width; y1 = refScreen->y; y2 = y1 + refScreen->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, pScreen->x - refScreen->x, pScreen->y - refScreen->y, j); if ((right >= x1) && (right < x2)) pLayout->right = AddEdge(pLayout->right, min, max, pScreen->x - refScreen->x, pScreen->y - refScreen->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, pScreen->x - refScreen->x, pScreen->y - refScreen->y, j); if ((bottom >= y1) && (bottom < y2)) pLayout->down = AddEdge(pLayout->down, min, max, pScreen->x - refScreen->x, pScreen->y - refScreen->y, j); } } } } if (!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); } } update_desktop_dimensions(); } 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 */ free(sl->left); free(sl->right); free(sl->up); free(sl->down); } xf86InitOrigins(); }