diff options
Diffstat (limited to 'tk8.6/generic/tkGeometry.c')
| -rw-r--r-- | tk8.6/generic/tkGeometry.c | 784 |
1 files changed, 0 insertions, 784 deletions
diff --git a/tk8.6/generic/tkGeometry.c b/tk8.6/generic/tkGeometry.c deleted file mode 100644 index 2e0009a..0000000 --- a/tk8.6/generic/tkGeometry.c +++ /dev/null @@ -1,784 +0,0 @@ -/* - * tkGeometry.c -- - * - * This file contains generic Tk code for geometry management (stuff - * that's used by all geometry managers). - * - * Copyright (c) 1990-1994 The Regents of the University of California. - * Copyright (c) 1994-1995 Sun Microsystems, Inc. - * - * See the file "license.terms" for information on usage and redistribution of - * this file, and for a DISCLAIMER OF ALL WARRANTIES. - */ - -#include "tkInt.h" - -/* - * Data structures of the following type are used by Tk_MaintainGeometry. For - * each slave managed by Tk_MaintainGeometry, there is one of these structures - * associated with its master. - */ - -typedef struct MaintainSlave { - Tk_Window slave; /* The slave window being positioned. */ - Tk_Window master; /* The master that determines slave's - * position; it must be a descendant of - * slave's parent. */ - int x, y; /* Desired position of slave relative to - * master. */ - int width, height; /* Desired dimensions of slave. */ - struct MaintainSlave *nextPtr; - /* Next in list of Maintains associated with - * master. */ -} MaintainSlave; - -/* - * For each window that has been specified as a master to Tk_MaintainGeometry, - * there is a structure of the following type: - */ - -typedef struct MaintainMaster { - Tk_Window ancestor; /* The lowest ancestor of this window for - * which we have *not* created a - * StructureNotify handler. May be the same as - * the window itself. */ - int checkScheduled; /* Non-zero means that there is already a call - * to MaintainCheckProc scheduled as an idle - * handler. */ - MaintainSlave *slavePtr; /* First in list of all slaves associated with - * this master. */ -} MaintainMaster; - -/* - * Prototypes for static procedures in this file: - */ - -static void MaintainCheckProc(ClientData clientData); -static void MaintainMasterProc(ClientData clientData, - XEvent *eventPtr); -static void MaintainSlaveProc(ClientData clientData, - XEvent *eventPtr); - -/* - *-------------------------------------------------------------- - * - * Tk_ManageGeometry -- - * - * Arrange for a particular procedure to manage the geometry of a given - * slave window. - * - * Results: - * None. - * - * Side effects: - * Proc becomes the new geometry manager for tkwin, replacing any - * previous geometry manager. The geometry manager will be notified (by - * calling procedures in *mgrPtr) when interesting things happen in the - * future. If there was an existing geometry manager for tkwin different - * from the new one, it is notified by calling its lostSlaveProc. - * - *-------------------------------------------------------------- - */ - -void -Tk_ManageGeometry( - Tk_Window tkwin, /* Window whose geometry is to be managed by - * proc. */ - const Tk_GeomMgr *mgrPtr, /* Static structure describing the geometry - * manager. This structure must never go - * away. */ - ClientData clientData) /* Arbitrary one-word argument to pass to - * geometry manager procedures. */ -{ - register TkWindow *winPtr = (TkWindow *) tkwin; - - if ((winPtr->geomMgrPtr != NULL) && (mgrPtr != NULL) - && ((winPtr->geomMgrPtr != mgrPtr) - || (winPtr->geomData != clientData)) - && (winPtr->geomMgrPtr->lostSlaveProc != NULL)) { - winPtr->geomMgrPtr->lostSlaveProc(winPtr->geomData, tkwin); - } - - winPtr->geomMgrPtr = mgrPtr; - winPtr->geomData = clientData; -} - -/* - *-------------------------------------------------------------- - * - * Tk_GeometryRequest -- - * - * This procedure is invoked by widget code to indicate its preferences - * about the size of a window it manages. In general, widget code should - * call this procedure rather than Tk_ResizeWindow. - * - * Results: - * None. - * - * Side effects: - * The geometry manager for tkwin (if any) is invoked to handle the - * request. If possible, it will reconfigure tkwin and/or other windows - * to satisfy the request. The caller gets no indication of success or - * failure, but it will get X events if the window size was actually - * changed. - * - *-------------------------------------------------------------- - */ - -void -Tk_GeometryRequest( - Tk_Window tkwin, /* Window that geometry information pertains - * to. */ - int reqWidth, int reqHeight)/* Minimum desired dimensions for window, in - * pixels. */ -{ - register TkWindow *winPtr = (TkWindow *) tkwin; - - /* - * X gets very upset if a window requests a width or height of zero, so - * rounds requested sizes up to at least 1. - */ - - if (reqWidth <= 0) { - reqWidth = 1; - } - if (reqHeight <= 0) { - reqHeight = 1; - } - if ((reqWidth == winPtr->reqWidth) && (reqHeight == winPtr->reqHeight)) { - return; - } - winPtr->reqWidth = reqWidth; - winPtr->reqHeight = reqHeight; - if ((winPtr->geomMgrPtr != NULL) - && (winPtr->geomMgrPtr->requestProc != NULL)) { - winPtr->geomMgrPtr->requestProc(winPtr->geomData, tkwin); - } -} - -/* - *---------------------------------------------------------------------- - * - * Tk_SetInternalBorderEx -- - * - * Notify relevant geometry managers that a window has an internal border - * of a given width and that child windows should not be placed on that - * border. - * - * Results: - * None. - * - * Side effects: - * The border widths are recorded for the window, and all geometry - * managers of all children are notified so that can re-layout, if - * necessary. - * - *---------------------------------------------------------------------- - */ - -void -Tk_SetInternalBorderEx( - Tk_Window tkwin, /* Window that will have internal border. */ - int left, int right, /* Width of internal border, in pixels. */ - int top, int bottom) -{ - register TkWindow *winPtr = (TkWindow *) tkwin; - register int changed = 0; - - if (left < 0) { - left = 0; - } - if (left != winPtr->internalBorderLeft) { - winPtr->internalBorderLeft = left; - changed = 1; - } - - if (right < 0) { - right = 0; - } - if (right != winPtr->internalBorderRight) { - winPtr->internalBorderRight = right; - changed = 1; - } - - if (top < 0) { - top = 0; - } - if (top != winPtr->internalBorderTop) { - winPtr->internalBorderTop = top; - changed = 1; - } - - if (bottom < 0) { - bottom = 0; - } - if (bottom != winPtr->internalBorderBottom) { - winPtr->internalBorderBottom = bottom; - changed = 1; - } - - /* - * All the slaves for which this is the master window must now be - * repositioned to take account of the new internal border width. To - * signal all the geometry managers to do this, just resize the window to - * its current size. The ConfigureNotify event will cause geometry - * managers to recompute everything. - */ - - if (changed) { - Tk_ResizeWindow(tkwin, Tk_Width(tkwin), Tk_Height(tkwin)); - } -} - -/* - *---------------------------------------------------------------------- - * - * Tk_SetInternalBorder -- - * - * Notify relevant geometry managers that a window has an internal border - * of a given width and that child windows should not be placed on that - * border. - * - * Results: - * None. - * - * Side effects: - * The border width is recorded for the window, and all geometry managers - * of all children are notified so that can re-layout, if necessary. - * - *---------------------------------------------------------------------- - */ - -void -Tk_SetInternalBorder( - Tk_Window tkwin, /* Window that will have internal border. */ - int width) /* Width of internal border, in pixels. */ -{ - Tk_SetInternalBorderEx(tkwin, width, width, width, width); -} - -/* - *---------------------------------------------------------------------- - * - * Tk_SetMinimumRequestSize -- - * - * Notify relevant geometry managers that a window has a minimum request - * size. - * - * Results: - * None. - * - * Side effects: - * The minimum request size is recorded for the window, and a new size is - * requested for the window, if necessary. - * - *---------------------------------------------------------------------- - */ - -void -Tk_SetMinimumRequestSize( - Tk_Window tkwin, /* Window that will have internal border. */ - int minWidth, int minHeight)/* Minimum requested size, in pixels. */ -{ - register TkWindow *winPtr = (TkWindow *) tkwin; - - if ((winPtr->minReqWidth == minWidth) && - (winPtr->minReqHeight == minHeight)) { - return; - } - - winPtr->minReqWidth = minWidth; - winPtr->minReqHeight = minHeight; - - /* - * The changed min size may cause geometry managers to get a different - * result, so make them recompute. To signal all the geometry managers to - * do this, just resize the window to its current size. The - * ConfigureNotify event will cause geometry managers to recompute - * everything. - */ - - Tk_ResizeWindow(tkwin, Tk_Width(tkwin), Tk_Height(tkwin)); -} - -/* - *---------------------------------------------------------------------- - * - * TkSetGeometryMaster -- - * - * Set a geometry master for this window. Only one master may own - * a window at any time. - * - * Results: - * A standard Tcl result. - * - * Side effects: - * The geometry master is recorded for the window. - * - *---------------------------------------------------------------------- - */ - -int -TkSetGeometryMaster( - Tcl_Interp *interp, /* Current interpreter, for error. */ - Tk_Window tkwin, /* Window that will have geometry master - * set. */ - const char *master) /* The master identity. */ -{ - register TkWindow *winPtr = (TkWindow *) tkwin; - - if (winPtr->geometryMaster != NULL && - strcmp(winPtr->geometryMaster, master) == 0) { - return TCL_OK; - } - if (winPtr->geometryMaster != NULL) { - if (interp != NULL) { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "cannot use geometry manager %s inside %s which already" - " has slaves managed by %s", - master, Tk_PathName(tkwin), winPtr->geometryMaster)); - Tcl_SetErrorCode(interp, "TK", "GEOMETRY", "FIGHT", NULL); - } - return TCL_ERROR; - } - - winPtr->geometryMaster = ckalloc(strlen(master) + 1); - strcpy(winPtr->geometryMaster, master); - return TCL_OK; -} - -/* - *---------------------------------------------------------------------- - * - * TkFreeGeometryMaster -- - * - * Remove a geometry master for this window. Only one master may own - * a window at any time. - * - * Results: - * None. - * - * Side effects: - * The geometry master is cleared for the window. - * - *---------------------------------------------------------------------- - */ - -void -TkFreeGeometryMaster( - Tk_Window tkwin, /* Window that will have geometry master - * cleared. */ - const char *master) /* The master identity. */ -{ - register TkWindow *winPtr = (TkWindow *) tkwin; - - if (winPtr->geometryMaster != NULL && - strcmp(winPtr->geometryMaster, master) != 0) { - Tcl_Panic("Trying to free %s from geometry manager %s", - winPtr->geometryMaster, master); - } - if (winPtr->geometryMaster != NULL) { - ckfree(winPtr->geometryMaster); - winPtr->geometryMaster = NULL; - } -} - -/* - *---------------------------------------------------------------------- - * - * Tk_MaintainGeometry -- - * - * This procedure is invoked by geometry managers to handle slaves whose - * master's are not their parents. It translates the desired geometry for - * the slave into the coordinate system of the parent and respositions - * the slave if it isn't already at the right place. Furthermore, it sets - * up event handlers so that if the master (or any of its ancestors up to - * the slave's parent) is mapped, unmapped, or moved, then the slave will - * be adjusted to match. - * - * Results: - * None. - * - * Side effects: - * Event handlers are created and state is allocated to keep track of - * slave. Note: if slave was already managed for master by - * Tk_MaintainGeometry, then the previous information is replaced with - * the new information. The caller must eventually call - * Tk_UnmaintainGeometry to eliminate the correspondence (or, the state - * is automatically freed when either window is destroyed). - * - *---------------------------------------------------------------------- - */ - -void -Tk_MaintainGeometry( - Tk_Window slave, /* Slave for geometry management. */ - Tk_Window master, /* Master for slave; must be a descendant of - * slave's parent. */ - int x, int y, /* Desired position of slave within master. */ - int width, int height) /* Desired dimensions for slave. */ -{ - Tcl_HashEntry *hPtr; - MaintainMaster *masterPtr; - register MaintainSlave *slavePtr; - int isNew, map; - Tk_Window ancestor, parent; - TkDisplay *dispPtr = ((TkWindow *) master)->dispPtr; - - if (master == Tk_Parent(slave)) { - /* - * If the slave is a direct descendant of the master, don't bother - * setting up the extra infrastructure for management, just make a - * call to Tk_MoveResizeWindow; the parent/child relationship will - * take care of the rest. - */ - - Tk_MoveResizeWindow(slave, x, y, width, height); - - /* - * Map the slave if the master is already mapped; otherwise, wait - * until the master is mapped later (in which case mapping the slave - * is taken care of elsewhere). - */ - - if (Tk_IsMapped(master)) { - Tk_MapWindow(slave); - } - return; - } - - if (!dispPtr->geomInit) { - dispPtr->geomInit = 1; - Tcl_InitHashTable(&dispPtr->maintainHashTable, TCL_ONE_WORD_KEYS); - } - - /* - * See if there is already a MaintainMaster structure for the master; if - * not, then create one. - */ - - parent = Tk_Parent(slave); - hPtr = Tcl_CreateHashEntry(&dispPtr->maintainHashTable, - (char *) master, &isNew); - if (!isNew) { - masterPtr = Tcl_GetHashValue(hPtr); - } else { - masterPtr = ckalloc(sizeof(MaintainMaster)); - masterPtr->ancestor = master; - masterPtr->checkScheduled = 0; - masterPtr->slavePtr = NULL; - Tcl_SetHashValue(hPtr, masterPtr); - } - - /* - * Create a MaintainSlave structure for the slave if there isn't already - * one. - */ - - for (slavePtr = masterPtr->slavePtr; slavePtr != NULL; - slavePtr = slavePtr->nextPtr) { - if (slavePtr->slave == slave) { - goto gotSlave; - } - } - slavePtr = ckalloc(sizeof(MaintainSlave)); - slavePtr->slave = slave; - slavePtr->master = master; - slavePtr->nextPtr = masterPtr->slavePtr; - masterPtr->slavePtr = slavePtr; - Tk_CreateEventHandler(slave, StructureNotifyMask, MaintainSlaveProc, - slavePtr); - - /* - * Make sure that there are event handlers registered for all the windows - * between master and slave's parent (including master but not slave's - * parent). There may already be handlers for master and some of its - * ancestors (masterPtr->ancestor tells how many). - */ - - for (ancestor = master; ancestor != parent; - ancestor = Tk_Parent(ancestor)) { - if (ancestor == masterPtr->ancestor) { - Tk_CreateEventHandler(ancestor, StructureNotifyMask, - MaintainMasterProc, masterPtr); - masterPtr->ancestor = Tk_Parent(ancestor); - } - } - - /* - * Fill in up-to-date information in the structure, then update the window - * if it's not currently in the right place or state. - */ - - gotSlave: - slavePtr->x = x; - slavePtr->y = y; - slavePtr->width = width; - slavePtr->height = height; - map = 1; - for (ancestor = slavePtr->master; ; ancestor = Tk_Parent(ancestor)) { - if (!Tk_IsMapped(ancestor) && (ancestor != parent)) { - map = 0; - } - if (ancestor == parent) { - if ((x != Tk_X(slavePtr->slave)) - || (y != Tk_Y(slavePtr->slave)) - || (width != Tk_Width(slavePtr->slave)) - || (height != Tk_Height(slavePtr->slave))) { - Tk_MoveResizeWindow(slavePtr->slave, x, y, width, height); - } - if (map) { - Tk_MapWindow(slavePtr->slave); - } else { - Tk_UnmapWindow(slavePtr->slave); - } - break; - } - x += Tk_X(ancestor) + Tk_Changes(ancestor)->border_width; - y += Tk_Y(ancestor) + Tk_Changes(ancestor)->border_width; - } -} - -/* - *---------------------------------------------------------------------- - * - * Tk_UnmaintainGeometry -- - * - * This procedure cancels a previous Tk_MaintainGeometry call, so that - * the relationship between slave and master is no longer maintained. - * - * Results: - * None. - * - * Side effects: - * The slave is unmapped and state is released, so that slave won't track - * master any more. If we weren't previously managing slave relative to - * master, then this procedure has no effect. - * - *---------------------------------------------------------------------- - */ - -void -Tk_UnmaintainGeometry( - Tk_Window slave, /* Slave for geometry management. */ - Tk_Window master) /* Master for slave; must be a descendant of - * slave's parent. */ -{ - Tcl_HashEntry *hPtr; - MaintainMaster *masterPtr; - register MaintainSlave *slavePtr, *prevPtr; - Tk_Window ancestor; - TkDisplay *dispPtr = ((TkWindow *) slave)->dispPtr; - - if (master == Tk_Parent(slave)) { - /* - * If the slave is a direct descendant of the master, - * Tk_MaintainGeometry will not have set up any of the extra - * infrastructure. Don't even bother to look for it, just return. - */ - return; - } - - if (!dispPtr->geomInit) { - dispPtr->geomInit = 1; - Tcl_InitHashTable(&dispPtr->maintainHashTable, TCL_ONE_WORD_KEYS); - } - - if (!(((TkWindow *) slave)->flags & TK_ALREADY_DEAD)) { - Tk_UnmapWindow(slave); - } - hPtr = Tcl_FindHashEntry(&dispPtr->maintainHashTable, (char *) master); - if (hPtr == NULL) { - return; - } - masterPtr = Tcl_GetHashValue(hPtr); - slavePtr = masterPtr->slavePtr; - if (slavePtr->slave == slave) { - masterPtr->slavePtr = slavePtr->nextPtr; - } else { - for (prevPtr = slavePtr, slavePtr = slavePtr->nextPtr; ; - prevPtr = slavePtr, slavePtr = slavePtr->nextPtr) { - if (slavePtr == NULL) { - return; - } - if (slavePtr->slave == slave) { - prevPtr->nextPtr = slavePtr->nextPtr; - break; - } - } - } - Tk_DeleteEventHandler(slavePtr->slave, StructureNotifyMask, - MaintainSlaveProc, slavePtr); - ckfree(slavePtr); - if (masterPtr->slavePtr == NULL) { - if (masterPtr->ancestor != NULL) { - for (ancestor = master; ; ancestor = Tk_Parent(ancestor)) { - Tk_DeleteEventHandler(ancestor, StructureNotifyMask, - MaintainMasterProc, masterPtr); - if (ancestor == masterPtr->ancestor) { - break; - } - } - } - if (masterPtr->checkScheduled) { - Tcl_CancelIdleCall(MaintainCheckProc, masterPtr); - } - Tcl_DeleteHashEntry(hPtr); - ckfree(masterPtr); - } -} - -/* - *---------------------------------------------------------------------- - * - * MaintainMasterProc -- - * - * This procedure is invoked by the Tk event dispatcher in response to - * StructureNotify events on the master or one of its ancestors, on - * behalf of Tk_MaintainGeometry. - * - * Results: - * None. - * - * Side effects: - * It schedules a call to MaintainCheckProc, which will eventually caused - * the postions and mapped states to be recalculated for all the - * maintained slaves of the master. Or, if the master window is being - * deleted then state is cleaned up. - * - *---------------------------------------------------------------------- - */ - -static void -MaintainMasterProc( - ClientData clientData, /* Pointer to MaintainMaster structure for the - * master window. */ - XEvent *eventPtr) /* Describes what just happened. */ -{ - MaintainMaster *masterPtr = clientData; - MaintainSlave *slavePtr; - int done; - - if ((eventPtr->type == ConfigureNotify) - || (eventPtr->type == MapNotify) - || (eventPtr->type == UnmapNotify)) { - if (!masterPtr->checkScheduled) { - masterPtr->checkScheduled = 1; - Tcl_DoWhenIdle(MaintainCheckProc, masterPtr); - } - } else if (eventPtr->type == DestroyNotify) { - /* - * Delete all of the state associated with this master, but be careful - * not to use masterPtr after the last slave is deleted, since its - * memory will have been freed. - */ - - done = 0; - do { - slavePtr = masterPtr->slavePtr; - if (slavePtr->nextPtr == NULL) { - done = 1; - } - Tk_UnmaintainGeometry(slavePtr->slave, slavePtr->master); - } while (!done); - } -} - -/* - *---------------------------------------------------------------------- - * - * MaintainSlaveProc -- - * - * This procedure is invoked by the Tk event dispatcher in response to - * StructureNotify events on a slave being managed by - * Tk_MaintainGeometry. - * - * Results: - * None. - * - * Side effects: - * If the event is a DestroyNotify event then the Maintain state and - * event handlers for this slave are deleted. - * - *---------------------------------------------------------------------- - */ - -static void -MaintainSlaveProc( - ClientData clientData, /* Pointer to MaintainSlave structure for - * master-slave pair. */ - XEvent *eventPtr) /* Describes what just happened. */ -{ - MaintainSlave *slavePtr = clientData; - - if (eventPtr->type == DestroyNotify) { - Tk_UnmaintainGeometry(slavePtr->slave, slavePtr->master); - } -} - -/* - *---------------------------------------------------------------------- - * - * MaintainCheckProc -- - * - * This procedure is invoked by the Tk event dispatcher as an idle - * handler, when a master or one of its ancestors has been reconfigured, - * mapped, or unmapped. Its job is to scan all of the slaves for the - * master and reposition them, map them, or unmap them as needed to - * maintain their geometry relative to the master. - * - * Results: - * None. - * - * Side effects: - * Slaves can get repositioned, mapped, or unmapped. - * - *---------------------------------------------------------------------- - */ - -static void -MaintainCheckProc( - ClientData clientData) /* Pointer to MaintainMaster structure for the - * master window. */ -{ - MaintainMaster *masterPtr = clientData; - MaintainSlave *slavePtr; - Tk_Window ancestor, parent; - int x, y, map; - - masterPtr->checkScheduled = 0; - for (slavePtr = masterPtr->slavePtr; slavePtr != NULL; - slavePtr = slavePtr->nextPtr) { - parent = Tk_Parent(slavePtr->slave); - x = slavePtr->x; - y = slavePtr->y; - map = 1; - for (ancestor = slavePtr->master; ; ancestor = Tk_Parent(ancestor)) { - if (!Tk_IsMapped(ancestor) && (ancestor != parent)) { - map = 0; - } - if (ancestor == parent) { - if ((x != Tk_X(slavePtr->slave)) - || (y != Tk_Y(slavePtr->slave))) { - Tk_MoveWindow(slavePtr->slave, x, y); - } - if (map) { - Tk_MapWindow(slavePtr->slave); - } else { - Tk_UnmapWindow(slavePtr->slave); - } - break; - } - x += Tk_X(ancestor) + Tk_Changes(ancestor)->border_width; - y += Tk_Y(ancestor) + Tk_Changes(ancestor)->border_width; - } - } -} - -/* - * Local Variables: - * mode: c - * c-basic-offset: 4 - * fill-column: 78 - * End: - */ |