/[dtapublic]/projs/dtats/trunk/shared_source/c_tk_base_7_5_w_mods/tkwinwindow.c

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-revision 69 by dashley,
Sat Nov  5 10:54:17 2016 UTC
+revision 71 by dashley,
Sat Nov  5 11:07:06 2016 UTC
 Line 1
  /* $Header$ */
  /*
   * tkWinWindow.c --
   *
   *      Xlib emulation routines for Windows related to creating,
   *      displaying and destroying windows.
   *
   * Copyright (c) 1995-1997 Sun Microsystems, Inc.
   *
   * See the file "license.terms" for information on usage and redistribution
   * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
   *
   * RCS: @(#) $Id: tkwinwindow.c,v 1.1.1.1 2001/06/13 05:14:28 dtashley Exp $
   */
  #include "tkWinInt.h"
  typedef struct ThreadSpecificData {
      int initialized;            /* 0 means table below needs initializing. */
      Tcl_HashTable windowTable;  /* The windowTable maps from HWND to
                                   * Tk_Window handles. */
  } ThreadSpecificData;
  static Tcl_ThreadDataKey dataKey;
  /*
   * Forward declarations for procedures defined in this file:
   */
  static void             NotifyVisibility _ANSI_ARGS_((XEvent *eventPtr,
                              TkWindow *winPtr));
  static void             StackWindow _ANSI_ARGS_((Window w, Window sibling,
                              int stack_mode));
  /*
   *----------------------------------------------------------------------
   *
   * Tk_AttachHWND --
   *
   *      This function binds an HWND and a reflection procedure to
   *      the specified Tk_Window.
   *
   * Results:
   *      Returns an X Window that encapsulates the HWND.
   *
   * Side effects:
   *      May allocate a new X Window.  Also enters the HWND into the
   *      global window table.
   *
   *----------------------------------------------------------------------
   */
  Window
  Tk_AttachHWND(tkwin, hwnd)
      Tk_Window tkwin;
      HWND hwnd;
  {
      int new;
      Tcl_HashEntry *entryPtr;
      TkWinDrawable *twdPtr = (TkWinDrawable *) Tk_WindowId(tkwin);
      ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
              Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
      if (!tsdPtr->initialized) {
          Tcl_InitHashTable(&tsdPtr->windowTable, TCL_ONE_WORD_KEYS);
          tsdPtr->initialized = 1;
      }
      /*
       * Allocate a new drawable if necessary.  Otherwise, remove the
       * previous HWND from from the window table.
       */
      if (twdPtr == NULL) {
          twdPtr = (TkWinDrawable*) ckalloc(sizeof(TkWinDrawable));
          twdPtr->type = TWD_WINDOW;
          twdPtr->window.winPtr = (TkWindow *) tkwin;
      } else if (twdPtr->window.handle != NULL) {
          entryPtr = Tcl_FindHashEntry(&tsdPtr->windowTable,
                  (char *)twdPtr->window.handle);
          Tcl_DeleteHashEntry(entryPtr);
      }
      /*
       * Insert the new HWND into the window table.
       */
      twdPtr->window.handle = hwnd;
      entryPtr = Tcl_CreateHashEntry(&tsdPtr->windowTable, (char *)hwnd, &new);
      Tcl_SetHashValue(entryPtr, (ClientData)tkwin);
      return (Window)twdPtr;
  }
  /*
   *----------------------------------------------------------------------
   *
   * Tk_HWNDToWindow --
   *
   *      This function retrieves a Tk_Window from the window table
   *      given an HWND.
   *
   * Results:
   *      Returns the matching Tk_Window.
   *
   * Side effects:
   *      None.
   *
   *----------------------------------------------------------------------
   */
  Tk_Window
  Tk_HWNDToWindow(hwnd)
      HWND hwnd;
  {
      Tcl_HashEntry *entryPtr;
      ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
              Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
      if (!tsdPtr->initialized) {
          Tcl_InitHashTable(&tsdPtr->windowTable, TCL_ONE_WORD_KEYS);
          tsdPtr->initialized = 1;
      }
      entryPtr = Tcl_FindHashEntry(&tsdPtr->windowTable, (char*)hwnd);
      if (entryPtr != NULL) {
          return (Tk_Window) Tcl_GetHashValue(entryPtr);
      }
      return NULL;
  }
  /*
   *----------------------------------------------------------------------
   *
   * Tk_GetHWND --
   *
   *      This function extracts the HWND from an X Window.
   *
   * Results:
   *      Returns the HWND associated with the Window.
   *
   * Side effects:
   *      None.
   *
   *----------------------------------------------------------------------
   */
  HWND
  Tk_GetHWND(window)
      Window window;
  {
      TkWinDrawable *twdPtr = (TkWinDrawable *) window;
      return twdPtr->window.handle;
  }
  /*
   *----------------------------------------------------------------------
   *
   * TkpPrintWindowId --
   *
   *      This routine stores the string representation of the
   *      platform dependent window handle for an X Window in the
   *      given buffer.
   *
   * Results:
   *      Returns the result in the specified buffer.
   *
   * Side effects:
   *      None.
   *
   *----------------------------------------------------------------------
   */
  void
  TkpPrintWindowId(buf, window)
      char *buf;                  /* Pointer to string large enough to hold
                                   * the hex representation of a pointer. */
      Window window;              /* Window to be printed into buffer. */
  {
      HWND hwnd = (window) ? Tk_GetHWND(window) : 0;
      sprintf(buf, "0x%x", (unsigned int) hwnd);
  }
  /*
   *----------------------------------------------------------------------
   *
   * TkpScanWindowId --
   *
   *      Given a string which represents the platform dependent window
   *      handle, produce the X Window id for the window.
   *
   * Results:
   *      The return value is normally TCL_OK;  in this case *idPtr
   *      will be set to the X Window id equivalent to string.  If
   *      string is improperly formed then TCL_ERROR is returned and
   *      an error message will be left in the interp's result.  If the
   *      number does not correspond to a Tk Window, then *idPtr will
   *      be set to None.
   *
   * Side effects:
   *      None.
   *
   *----------------------------------------------------------------------
   */
  int
  TkpScanWindowId(interp, string, idPtr)
      Tcl_Interp *interp;         /* Interpreter to use for error reporting. */
      char *string;               /* String containing a (possibly signed)
                                   * integer in a form acceptable to strtol. */
      int *idPtr;                 /* Place to store converted result. */
  {
      int number;
      Tk_Window tkwin;
      if (Tcl_GetInt(interp, string, &number) != TCL_OK) {
          return TCL_ERROR;
      }
      tkwin = Tk_HWNDToWindow((HWND)number);
      if (tkwin) {
          *idPtr = Tk_WindowId(tkwin);
      } else {
          *idPtr = None;
      }
      return TCL_OK;
  }
  /*
   *----------------------------------------------------------------------
   *
   * TkpMakeWindow --
   *
   *      Creates a Windows window object based on the current attributes
   *      of the specified TkWindow.
   *
   * Results:
   *      Returns a pointer to a new TkWinDrawable cast to a Window.
   *
   * Side effects:
   *      Creates a new window.
   *
   *----------------------------------------------------------------------
   */
  Window
  TkpMakeWindow(winPtr, parent)
      TkWindow *winPtr;
      Window parent;
  {
      HWND parentWin;
      int style;
      HWND hwnd;
      if (parent != None) {
          parentWin = Tk_GetHWND(parent);
          style = WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
      } else {
          parentWin = NULL;
          style = WS_POPUP | WS_CLIPCHILDREN;
      }
      /*
       * Create the window, then ensure that it is at the top of the
       * stacking order.
       */
      hwnd = CreateWindowEx(WS_EX_NOPARENTNOTIFY, TK_WIN_CHILD_CLASS_NAME, NULL,
              style, Tk_X(winPtr), Tk_Y(winPtr), Tk_Width(winPtr),
              Tk_Height(winPtr), parentWin, NULL, Tk_GetHINSTANCE(), NULL);
      SetWindowPos(hwnd, HWND_TOP, 0, 0, 0, 0,
                      SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
      return Tk_AttachHWND((Tk_Window)winPtr, hwnd);
  }
  /*
   *----------------------------------------------------------------------
   *
   * XDestroyWindow --
   *
   *      Destroys the given window.
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      Sends the WM_DESTROY message to the window and then destroys
   *      it the Win32 resources associated with the window.
   *
   *----------------------------------------------------------------------
   */
  void
  XDestroyWindow(display, w)
      Display* display;
      Window w;
  {
      Tcl_HashEntry *entryPtr;
      TkWinDrawable *twdPtr = (TkWinDrawable *)w;
      TkWindow *winPtr = TkWinGetWinPtr(w);
      HWND hwnd = Tk_GetHWND(w);
      ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
              Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
      display->request++;
      /*
       * Remove references to the window in the pointer module then
       * release the drawable.
       */
      TkPointerDeadWindow(winPtr);
      entryPtr = Tcl_FindHashEntry(&tsdPtr->windowTable, (char*)hwnd);
      if (entryPtr != NULL) {
          Tcl_DeleteHashEntry(entryPtr);
      }
      ckfree((char *)twdPtr);
      /*
       * Don't bother destroying the window if we are going to destroy
       * the parent later.
       */
      if (hwnd != NULL && !(winPtr->flags & TK_DONT_DESTROY_WINDOW)) {
          DestroyWindow(hwnd);
      }
  }
  /*
   *----------------------------------------------------------------------
   *
   * XMapWindow --
   *
   *      Cause the given window to become visible.
   *
   * Results:
   *      None
   *
   * Side effects:
   *      Causes the window state to change, and generates a MapNotify
   *      event.
   *
   *----------------------------------------------------------------------
   */
  void
  XMapWindow(display, w)
      Display* display;
      Window w;
  {
      XEvent event;
      TkWindow *parentPtr;
      TkWindow *winPtr = TkWinGetWinPtr(w);
      display->request++;
      ShowWindow(TkWinGetHWND(w), SW_SHOWNORMAL);
      winPtr->flags |= TK_MAPPED;
      /*
       * Check to see if this window is visible now.  If all of the parent
       * windows up to the first toplevel are mapped, then this window and
       * its mapped children have just become visible.
       */
      if (!(winPtr->flags & TK_TOP_LEVEL)) {
          for (parentPtr = winPtr->parentPtr; ;
                  parentPtr = parentPtr->parentPtr) {
              if ((parentPtr == NULL) || !(parentPtr->flags & TK_MAPPED)) {
                  return;
              }
              if (parentPtr->flags & TK_TOP_LEVEL) {
                  break;
              }
          }
      } else {
          event.type = MapNotify;
          event.xmap.serial = display->request;
          event.xmap.send_event = False;
          event.xmap.display = display;
          event.xmap.event = winPtr->window;
          event.xmap.window = winPtr->window;
          event.xmap.override_redirect = winPtr->atts.override_redirect;
          Tk_QueueWindowEvent(&event, TCL_QUEUE_TAIL);
      }
      /*
       * Generate VisibilityNotify events for this window and its mapped
       * children.
       */
      event.type = VisibilityNotify;
      event.xvisibility.serial = display->request;
      event.xvisibility.send_event = False;
      event.xvisibility.display = display;
      event.xvisibility.window = winPtr->window;
      event.xvisibility.state = VisibilityUnobscured;
      NotifyVisibility(&event, winPtr);
  }
  /*
   *----------------------------------------------------------------------
   *
   * NotifyVisibility --
   *
   *      This function recursively notifies the mapped children of the
   *      specified window of a change in visibility.  Note that we don't
   *      properly report the visibility state, since Windows does not
   *      provide that info.  The eventPtr argument must point to an event
   *      that has been completely initialized except for the window slot.
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      Generates lots of events.
   *
   *----------------------------------------------------------------------
   */
  static void
  NotifyVisibility(eventPtr, winPtr)
      XEvent *eventPtr;           /* Initialized VisibilityNotify event. */
      TkWindow *winPtr;           /* Window to notify. */
  {
      if (winPtr->atts.event_mask & VisibilityChangeMask) {
          eventPtr->xvisibility.window = winPtr->window;
          Tk_QueueWindowEvent(eventPtr, TCL_QUEUE_TAIL);
      }
      for (winPtr = winPtr->childList; winPtr != NULL;
              winPtr = winPtr->nextPtr) {
          if (winPtr->flags & TK_MAPPED) {
              NotifyVisibility(eventPtr, winPtr);
          }
      }
  }
  /*
   *----------------------------------------------------------------------
   *
   * XUnmapWindow --
   *
   *      Cause the given window to become invisible.
   *
   * Results:
   *      None
   *
   * Side effects:
   *      Causes the window state to change, and generates an UnmapNotify
   *      event.
   *
   *----------------------------------------------------------------------
   */
  void
  XUnmapWindow(display, w)
      Display* display;
      Window w;
  {
      XEvent event;
      TkWindow *winPtr = TkWinGetWinPtr(w);
      display->request++;
      /*
       * Bug fix: Don't short circuit this routine based on TK_MAPPED because
       * it will be cleared before XUnmapWindow is called.
       */
      ShowWindow(TkWinGetHWND(w), SW_HIDE);
      winPtr->flags &= ~TK_MAPPED;
      if (winPtr->flags & TK_TOP_LEVEL) {
          event.type = UnmapNotify;
          event.xunmap.serial = display->request;
          event.xunmap.send_event = False;
          event.xunmap.display = display;
          event.xunmap.event = winPtr->window;
          event.xunmap.window = winPtr->window;
          event.xunmap.from_configure = False;
          Tk_HandleEvent(&event);
      }
  }
  /*
   *----------------------------------------------------------------------
   *
   * XMoveResizeWindow --
   *
   *      Move and resize a window relative to its parent.
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      Repositions and resizes the specified window.
   *
   *----------------------------------------------------------------------
   */
  void
  XMoveResizeWindow(display, w, x, y, width, height)
      Display* display;
      Window w;
      int x;                      /* Position relative to parent. */
      int y;
      unsigned int width;
      unsigned int height;
  {
      display->request++;
      MoveWindow(TkWinGetHWND(w), x, y, width, height, TRUE);
  }
  /*
   *----------------------------------------------------------------------
   *
   * XMoveWindow --
   *
   *      Move a window relative to its parent.
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      Repositions the specified window.
   *
   *----------------------------------------------------------------------
   */
  void
  XMoveWindow(display, w, x, y)
      Display* display;
      Window w;
      int x;
      int y;
  {
      TkWindow *winPtr = TkWinGetWinPtr(w);
      display->request++;
      MoveWindow(TkWinGetHWND(w), x, y, winPtr->changes.width,
              winPtr->changes.height, TRUE);
  }
  /*
   *----------------------------------------------------------------------
   *
   * XResizeWindow --
   *
   *      Resize a window.
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      Resizes the specified window.
   *
   *----------------------------------------------------------------------
   */
  void
  XResizeWindow(display, w, width, height)
      Display* display;
      Window w;
      unsigned int width;
      unsigned int height;
  {
      TkWindow *winPtr = TkWinGetWinPtr(w);
      display->request++;
      MoveWindow(TkWinGetHWND(w), winPtr->changes.x, winPtr->changes.y, width,
              height, TRUE);
  }
  /*
   *----------------------------------------------------------------------
   *
   * XRaiseWindow --
   *
   *      Change the stacking order of a window.
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      Changes the stacking order of the specified window.
   *
   *----------------------------------------------------------------------
   */
  void
  XRaiseWindow(display, w)
      Display* display;
      Window w;
  {
      HWND window = TkWinGetHWND(w);
      display->request++;
      SetWindowPos(window, HWND_TOPMOST, 0, 0, 0, 0,
              SWP_NOMOVE | SWP_NOSIZE);
  }
  /*
   *----------------------------------------------------------------------
   *
   * XConfigureWindow --
   *
   *      Change the size, position, stacking, or border of the specified
   *      window.
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      Changes the attributes of the specified window.  Note that we
   *      ignore the passed in values and use the values stored in the
   *      TkWindow data structure.
   *
   *----------------------------------------------------------------------
   */
  void
  XConfigureWindow(display, w, value_mask, values)
      Display* display;
      Window w;
      unsigned int value_mask;
      XWindowChanges* values;
  {
      TkWindow *winPtr = TkWinGetWinPtr(w);
      HWND hwnd = TkWinGetHWND(w);
      display->request++;
      /*
       * Change the shape and/or position of the window.
       */
      if (value_mask & (CWX|CWY|CWWidth|CWHeight)) {
          MoveWindow(hwnd, winPtr->changes.x, winPtr->changes.y,
                  winPtr->changes.width, winPtr->changes.height, TRUE);
      }
      /*
       * Change the stacking order of the window.
       */
      if (value_mask & CWStackMode) {
          HWND sibling;
          if ((value_mask & CWSibling) && (values->sibling != None)) {
              sibling = Tk_GetHWND(values->sibling);
          } else {
              sibling = NULL;
          }
          TkWinSetWindowPos(hwnd, sibling, values->stack_mode);
      }
  }
  /*
   *----------------------------------------------------------------------
   *
   * XClearWindow --
   *
   *      Clears the entire window to the current background color.
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      Erases the current contents of the window.
   *
   *----------------------------------------------------------------------
   */
  void
  XClearWindow(display, w)
      Display* display;
      Window w;
  {
      RECT rc;
      HBRUSH brush;
      HPALETTE oldPalette, palette;
      TkWindow *winPtr;
      HWND hwnd = TkWinGetHWND(w);
      HDC dc = GetDC(hwnd);
      palette = TkWinGetPalette(display->screens[0].cmap);
      oldPalette = SelectPalette(dc, palette, FALSE);
      display->request++;
      winPtr = TkWinGetWinPtr(w);
      brush = CreateSolidBrush(winPtr->atts.background_pixel);
      GetWindowRect(hwnd, &rc);
      rc.right = rc.right - rc.left;
      rc.bottom = rc.bottom - rc.top;
      rc.left = rc.top = 0;
      FillRect(dc, &rc, brush);
      DeleteObject(brush);
      SelectPalette(dc, oldPalette, TRUE);
      ReleaseDC(hwnd, dc);
  }
  /*
   *----------------------------------------------------------------------
   *
   * XChangeWindowAttributes --
   *
   *      This function is called when the attributes on a window are
   *      updated.  Since Tk maintains all of the window state, the only
   *      relevant value is the cursor.
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      May cause the mouse position to be updated.
   *
   *----------------------------------------------------------------------
   */
  void
  XChangeWindowAttributes(display, w, valueMask, attributes)
      Display* display;
      Window w;
      unsigned long valueMask;
      XSetWindowAttributes* attributes;
  {
      if (valueMask & CWCursor) {
          XDefineCursor(display, w, attributes->cursor);
      }
  }
  /*
   *----------------------------------------------------------------------
   *
   * TkWinSetWindowPos --
   *
   *      Adjust the stacking order of a window relative to a second
   *      window (or NULL).
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      Moves the specified window in the stacking order.
   *
   *----------------------------------------------------------------------
   */
  void
  TkWinSetWindowPos(hwnd, siblingHwnd, pos)
      HWND hwnd;                  /* Window to restack. */
      HWND siblingHwnd;           /* Sibling window. */
      int pos;                    /* One of Above or Below. */
  {
      HWND temp;
      /*
       * Since Windows does not support Above mode, we place the
       * specified window below the sibling and then swap them.
       */
      if (siblingHwnd) {
          if (pos == Above) {
              SetWindowPos(hwnd, siblingHwnd, 0, 0, 0, 0,
                      SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
              temp = hwnd;
              hwnd = siblingHwnd;
              siblingHwnd = temp;
          }
      } else {
          siblingHwnd = (pos == Above) ? HWND_TOP : HWND_BOTTOM;
      }
      SetWindowPos(hwnd, siblingHwnd, 0, 0, 0, 0,
              SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
  }
  /*
   *----------------------------------------------------------------------
   *
   * TkpWindowWasRecentlyDeleted --
   *
   *      Determines whether we know if the window given as argument was
   *      recently deleted. Called by the generic code error handler to
   *      handle BadWindow events.
   *
   * Results:
   *      Always 0. We do not keep this information on Windows.
   *
   * Side effects:
   *      None.
   *
   *----------------------------------------------------------------------
   */
  int
  TkpWindowWasRecentlyDeleted(win, dispPtr)
      Window win;
      TkDisplay *dispPtr;
  {
      return 0;
  }
  /* End of tkwinwindow.c */

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