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Diffstat (limited to 'xorg-server/hw/xfree86/common/xf86Cursor.c')
-rw-r--r--xorg-server/hw/xfree86/common/xf86Cursor.c1720
1 files changed, 860 insertions, 860 deletions
diff --git a/xorg-server/hw/xfree86/common/xf86Cursor.c b/xorg-server/hw/xfree86/common/xf86Cursor.c
index acfa79f10..929f047cc 100644
--- a/xorg-server/hw/xfree86/common/xf86Cursor.c
+++ b/xorg-server/hw/xfree86/common/xf86Cursor.c
@@ -1,860 +1,860 @@
-/*
- * 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 <xorg-config.h>
-#endif
-
-#include <X11/X.h>
-#include <X11/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"
-
-#include <X11/extensions/XIproto.h>
-#include "xf86Xinput.h"
-
-#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(DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y);
-
-static void xf86PointerMoved(int scrnIndex, int x, int y);
-
-static miPointerScreenFuncRec xf86PointerScreenFuncs = {
- xf86CursorOffScreen,
- xf86CrossScreen,
- xf86WarpCursor,
- /* let miPointerInitialize take care of these */
- NULL,
- NULL
-};
-
-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;
- 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);
-
- xf86EnterServerState(SETUP);
- Switched = (*pScr->SwitchMode)(pScr->scrnIndex, mode, 0);
- 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;
- }
- }
- xf86EnterServerState(OPERATING);
-
- if (pScr->AdjustFrame)
- (*pScr->AdjustFrame)(pScr->scrnIndex, pScr->frameX0, pScr->frameY0, 0);
-
- /* 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 = 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
- *
- * 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)
-{
- int sigstate;
- sigstate = xf86BlockSIGIO ();
- miPointerWarpCursor(pDev, 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 = 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;
-
- /* need to have this set up with a config file option */
- HardEdges = 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(!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 */
- free(sl->left);
- free(sl->right);
- free(sl->up);
- free(sl->down);
- }
-
- xf86InitOrigins();
-}
-
-
+/*
+ * 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 <xorg-config.h>
+#endif
+
+#include <X11/X.h>
+#include <X11/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"
+
+#include <X11/extensions/XIproto.h>
+#include "xf86Xinput.h"
+
+#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(DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y);
+
+static void xf86PointerMoved(int scrnIndex, int x, int y);
+
+static miPointerScreenFuncRec xf86PointerScreenFuncs = {
+ xf86CursorOffScreen,
+ xf86CrossScreen,
+ xf86WarpCursor,
+ /* let miPointerInitialize take care of these */
+ NULL,
+ NULL
+};
+
+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, was_blocked;
+ 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);
+
+ was_blocked = xf86BlockSIGIO();
+ Switched = (*pScr->SwitchMode)(pScr->scrnIndex, mode, 0);
+ 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;
+ }
+ }
+ xf86UnblockSIGIO(was_blocked);
+
+ if (pScr->AdjustFrame)
+ (*pScr->AdjustFrame)(pScr->scrnIndex, pScr->frameX0, pScr->frameY0, 0);
+
+ /* 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 = 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
+ *
+ * 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)
+{
+ int sigstate;
+ sigstate = xf86BlockSIGIO ();
+ miPointerWarpCursor(pDev, 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 = 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;
+
+ /* need to have this set up with a config file option */
+ HardEdges = 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(!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 */
+ free(sl->left);
+ free(sl->right);
+ free(sl->up);
+ free(sl->down);
+ }
+
+ xf86InitOrigins();
+}
+
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 17:19:14 +0000