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/*

 * tixDiWin.c --

 *

 *      This file implements one of the "Display Items" in the Tix library :

 *      WindowItem display items.

 *

 * Copyright (c) 1996, Expert Interface Technologies

 *

 * See the file "license.terms" for information on usage and redistribution

 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.

 *

 */

#include <tixPort.h>

#include <tixInt.h>

#include <tixDef.h>

/*----------------------------------------------------------------------

 *

 *               Data structures used by this file

 *

 *----------------------------------------------------------------------

 */

/*----------------------------------------------------------------------

 *

 *                    Private data definition

 *

 *----------------------------------------------------------------------

 */

static Tix_ListInfo mapWinListInfo = {

    Tk_Offset(TixWindowItem, next),

    TIX_UNDEFINED,

};

#define DEF_WINDOWITEM_WINDOW    ""

#define DEF_WINDOWITEM_STYLE     ""

#define DEF_WINDOWITEM_TYPE      "window"

static Tk_ConfigSpec windowItemConfigSpecs[] = {

    {TK_CONFIG_CUSTOM, "-itemtype", "itemType", "ItemType",

       DEF_WINDOWITEM_TYPE, Tk_Offset(TixWindowItem, diTypePtr),

       0, &tixConfigItemType},

    {TK_CONFIG_CUSTOM, "-style", "windowStyle", "WindowStyle",

       DEF_WINDOWITEM_STYLE, Tk_Offset(TixWindowItem, stylePtr),

       TK_CONFIG_NULL_OK, &tixConfigItemStyle},

    {TK_CONFIG_SYNONYM, "-widget", (char *) NULL, (char *) NULL,

       (char *)NULL, 0, 0},

    {TK_CONFIG_WINDOW, "-window", "window", "Window",

       DEF_WINDOWITEM_WINDOW, Tk_Offset(TixWindowItem, tkwin), 0},

    {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,

       (char *) NULL, 0, 0}

};

/*----------------------------------------------------------------------

 *

 *              Configuration options for Window Styles

 *

 *----------------------------------------------------------------------

 */

#define DEF_WINDOWSTYLE_PADX    "0"

#define DEF_WINDOWSTYLE_PADY    "0"

#define DEF_WINDOWSTYLE_ANCHOR  "w"

static Tk_ConfigSpec windowStyleConfigSpecs[] = {

    {TK_CONFIG_ANCHOR, "-anchor", "anchor", "Anchor",

       DEF_WINDOWSTYLE_ANCHOR, Tk_Offset(TixWindowStyle, anchor), 0},

    {TK_CONFIG_PIXELS, "-padx", "padX", "Pad",

       DEF_WINDOWSTYLE_PADX, Tk_Offset(TixWindowStyle, pad[0]), 0},

    {TK_CONFIG_PIXELS, "-pady", "padY", "Pad",

       DEF_WINDOWSTYLE_PADY, Tk_Offset(TixWindowStyle, pad[1]), 0},

    {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,

       (char *) NULL, 0, 0}

};

/*----------------------------------------------------------------------

 * Forward declarations for procedures defined later in this file:

 *----------------------------------------------------------------------

 */

static void             SubWindowLostSlaveProc _ANSI_ARGS_((

                            ClientData clientData, Tk_Window tkwin));

static void             SubWindowRequestProc _ANSI_ARGS_((

                            ClientData clientData, Tk_Window tkwin));

static void             SubWindowStructureProc _ANSI_ARGS_((

                            ClientData clientData, XEvent *eventPtr));

static char *           Tix_WindowItemComponent  _ANSI_ARGS_((

                            Tix_DItem * iPtr, int x, int y));

static void             Tix_WindowItemCalculateSize  _ANSI_ARGS_((

                            Tix_DItem * iPtr));

static int              Tix_WindowItemConfigure _ANSI_ARGS_((

                            Tix_DItem * iPtr, int argc, char ** argv,

                            int flags));

static Tix_DItem *      Tix_WindowItemCreate _ANSI_ARGS_((

                            Tix_DispData * ddPtr, Tix_DItemInfo * diTypePtr));

static void             Tix_WindowItemDisplay  _ANSI_ARGS_((

                            Pixmap pixmap, GC gc, Tix_DItem * iPtr,

                            int x, int y, int width, int height, int flags));

static void             Tix_WindowItemFree  _ANSI_ARGS_((

                            Tix_DItem * iPtr));

static void             Tix_WindowItemLostStyle  _ANSI_ARGS_((

                            Tix_DItem * iPtr));

static void             Tix_WindowItemStyleChanged  _ANSI_ARGS_((

                            Tix_DItem * iPtr));

static void             Tix_WindowItemUnmap _ANSI_ARGS_((

                            TixWindowItem *itPtr));

static int              Tix_WindowStyleConfigure _ANSI_ARGS_((

                            Tix_DItemStyle* style, int argc, char ** argv,

                            int flags));

static Tix_DItemStyle * Tix_WindowStyleCreate _ANSI_ARGS_((

                            Tcl_Interp *interp, Tk_Window tkwin,

                            Tix_DItemInfo * diTypePtr, char * name));

static void             Tix_WindowStyleFree _ANSI_ARGS_((

                            Tix_DItemStyle* style));

static void             Tix_WindowStyleSetTemplate _ANSI_ARGS_((

                            Tix_DItemStyle* style,

                            Tix_StyleTemplate * tmplPtr));

static void             UnmanageWindow _ANSI_ARGS_((Tix_DItem * iPtr,

                            Tk_Window tkwin));

static void             ManageWindow _ANSI_ARGS_((Tix_DItem * iPtr,

                            Tk_Window tkwin));

Tix_DItemInfo tix_WindowItemType = {

    "window",                   /* type */

    TIX_DITEM_WINDOW,

    Tix_WindowItemCreate,               /* createProc */

    Tix_WindowItemConfigure,

    Tix_WindowItemCalculateSize,

    Tix_WindowItemComponent,

    Tix_WindowItemDisplay,

    Tix_WindowItemFree,

    Tix_WindowItemStyleChanged,

    Tix_WindowItemLostStyle,

    Tix_WindowStyleCreate,

    Tix_WindowStyleConfigure,

    Tix_WindowStyleFree,

    Tix_WindowStyleSetTemplate,

    windowItemConfigSpecs,

    windowStyleConfigSpecs,

    NULL,                               /*next */

};

/*

 * The structure below defines the official type record for the

 * placer:

 */

static Tk_GeomMgr windowItemGeomType = {

    "tixWindowItem",                    /* name */

    SubWindowRequestProc,               /* requestProc */

    SubWindowLostSlaveProc,             /* lostSlaveProc */

};

/*----------------------------------------------------------------------

 * Tix_WindowItemCreate --

 *

 *

 *----------------------------------------------------------------------

 */

static Tix_DItem * Tix_WindowItemCreate(ddPtr, diTypePtr)

    Tix_DispData * ddPtr;

    Tix_DItemInfo * diTypePtr;

{

    TixWindowItem * itPtr;

    itPtr = (TixWindowItem*) ckalloc(sizeof(TixWindowItem));

    itPtr->diTypePtr    = diTypePtr;

    itPtr->ddPtr        = ddPtr;

    itPtr->stylePtr     = NULL;

    itPtr->clientData   = 0;

    itPtr->size[0]       = 0;

    itPtr->size[1]      = 0;

    itPtr->tkwin        = NULL;

    return (Tix_DItem *)itPtr;

}

/* %% */

static void Tix_WindowItemFree(iPtr)

    Tix_DItem * iPtr;

{

    TixWindowItem * itPtr = (TixWindowItem *) iPtr;

    if (itPtr->tkwin) {

        Tk_DeleteEventHandler(itPtr->tkwin, StructureNotifyMask,

            SubWindowStructureProc, (ClientData) itPtr);

        Tk_ManageGeometry(itPtr->tkwin, (Tk_GeomMgr *)NULL,

            (ClientData) NULL);

        Tk_UnmapWindow(itPtr->tkwin);

    }

    if (itPtr->stylePtr) {

        TixDItemStyleFree(iPtr, (Tix_DItemStyle*)itPtr->stylePtr);

    }

    Tk_FreeOptions(windowItemConfigSpecs, (char *)itPtr,

        itPtr->ddPtr->display, 0);

    ckfree((char*)itPtr);

}

/*----------------------------------------------------------------------

 * ManageWindow --

 *

 *      Associate this sub-window with the window item.

 *

 * Side effect:

 *      itPtr->tkwin is changed.

 *----------------------------------------------------------------------

 */

static void

ManageWindow(iPtr, tkwin)

    Tix_DItem * iPtr;

    Tk_Window tkwin;

{

    TixWindowItem * itPtr = (TixWindowItem *) iPtr;

    Tk_CreateEventHandler(tkwin, StructureNotifyMask,

        SubWindowStructureProc, (ClientData) itPtr);

    Tk_ManageGeometry(tkwin, &windowItemGeomType,

        (ClientData) itPtr);

    itPtr->tkwin = tkwin;

}

/*----------------------------------------------------------------------

 * UnmanageWindow --

 *

 *      Disassociate this sub-window from the window item.

 *

 * Note:

 *      the tkwin parameter may not equal to itPtr->tkwin.

 *----------------------------------------------------------------------

 */

static void

UnmanageWindow(iPtr, tkwin)

    Tix_DItem * iPtr;

    Tk_Window tkwin;

{

    TixWindowItem * itPtr = (TixWindowItem *) iPtr;

    Tk_DeleteEventHandler(tkwin, StructureNotifyMask,

        SubWindowStructureProc, (ClientData) itPtr);

    Tk_ManageGeometry(tkwin, (Tk_GeomMgr *)NULL,

        (ClientData) NULL);

    Tk_UnmapWindow(tkwin);

}

static int Tix_WindowItemConfigure(iPtr, argc, argv, flags)

    Tix_DItem * iPtr;

    int argc;

    char ** argv;

    int flags;

{

    TixWindowItem * itPtr = (TixWindowItem *) iPtr;

    TixWindowStyle * oldStyle = itPtr->stylePtr;

    Tk_Window oldWindow;

    oldWindow = itPtr->tkwin;

    if (Tk_ConfigureWidget(itPtr->ddPtr->interp, itPtr->ddPtr->tkwin,

        windowItemConfigSpecs,

        argc, argv, (char *)itPtr, flags) != TCL_OK) {

        return TCL_ERROR;

    }

    if (itPtr->stylePtr == NULL) {

        itPtr->stylePtr = (TixWindowStyle*)TixGetDefaultDItemStyle(

            itPtr->ddPtr, &tix_WindowItemType, iPtr, NULL);

    }

    if (oldWindow != itPtr->tkwin) {

        if (oldWindow != NULL) {

            UnmanageWindow(iPtr, oldWindow);

        }

        if (itPtr->tkwin != NULL) {

            /*

             * Make sure that the master window is the parent of the

             * window associated with the item.

             * Also, don't allow a top-level window to be

             * managed inside a master window.

             */

            if (Tk_Parent(itPtr->tkwin) != itPtr->ddPtr->tkwin) {

                Tcl_AppendResult(itPtr->ddPtr->interp, "can't use ",

                    Tk_PathName(itPtr->tkwin),

                    " in a window item of the master widget: must be a child",

                    " of ", Tk_PathName(itPtr->ddPtr->tkwin), (char *) NULL);

                goto badWindow;

            }

            if (((Tk_FakeWin *) (itPtr->tkwin))->flags & TK_TOP_LEVEL) {

                Tcl_AppendResult(itPtr->ddPtr->interp,

                    "can't manage toplevel window",

                    Tk_PathName(itPtr->tkwin),

                    " as a window item of ", Tk_PathName(itPtr->ddPtr->tkwin),

                    (char *) NULL);

                goto badWindow;

            }

            ManageWindow(iPtr, itPtr->tkwin);

        }

    }

    if (oldStyle != NULL && itPtr->stylePtr != oldStyle) {

        Tix_WindowItemStyleChanged(iPtr);

    }

    else {

        Tix_WindowItemCalculateSize((Tix_DItem*)itPtr);

    }

    return TCL_OK;

badWindow:

    itPtr->tkwin = NULL;

    return TCL_ERROR;

}

static void Tix_WindowItemDisplay(pixmap, gc, iPtr, x, y, width, height, flag)

    Pixmap pixmap;

    GC gc;

    Tix_DItem * iPtr;

    int x;

    int y;

    int width;

    int height;

    int flag;

{

    TixWindowItem *itPtr = (TixWindowItem *)iPtr;

    if (itPtr->tkwin == NULL) {

        return;

    }

    TixDItemGetAnchor(itPtr->stylePtr->anchor, x, y, width, height,

        itPtr->size[0], itPtr->size[1], &x, &y);

    x += itPtr->stylePtr->pad[0];

    y += itPtr->stylePtr->pad[1];

    width  -= 2*itPtr->stylePtr->pad[0];

    height -= 2*itPtr->stylePtr->pad[1];

    if (width < 1 || height < 1) {

        if (itPtr->ddPtr->tkwin != Tk_Parent(itPtr->tkwin)) {

            Tk_UnmaintainGeometry(itPtr->tkwin, itPtr->ddPtr->tkwin);

        }

        Tk_UnmapWindow(itPtr->tkwin);

        return;

    }

    if (itPtr->ddPtr->tkwin == Tk_Parent(itPtr->tkwin)) {

        Tk_MapWindow(itPtr->tkwin);

        Tk_MoveResizeWindow(itPtr->tkwin, x, y, width, height);

    }

    else {

        Tk_MaintainGeometry(itPtr->tkwin, itPtr->ddPtr->tkwin,

            x, y, width, height);

    }

}

static void Tix_WindowItemCalculateSize(iPtr)

    Tix_DItem * iPtr;

{

    TixWindowItem *itPtr = (TixWindowItem*)iPtr;

    if (itPtr->tkwin != NULL) {

        itPtr->size[0] = Tk_ReqWidth (itPtr->tkwin);

        itPtr->size[1] = Tk_ReqHeight(itPtr->tkwin);

    } else {

        itPtr->size[0] = 0;

        itPtr->size[1] = 0;

    }

    itPtr->size[0] += 2*itPtr->stylePtr->pad[0];

    itPtr->size[1] += 2*itPtr->stylePtr->pad[1];

}

static char * Tix_WindowItemComponent(iPtr, x, y)

    Tix_DItem * iPtr;

    int x;

    int y;

{

#if 0

    TixWindowItem *itPtr = (TixWindowItem *)iPtr;

#endif

    static char * body = "body";

    return body;

}

static void Tix_WindowItemStyleChanged(iPtr)

    Tix_DItem * iPtr;

{

    TixWindowItem *itPtr = (TixWindowItem *)iPtr;

    if (itPtr->stylePtr == NULL) {

        /* Maybe we haven't set the style to default style yet */

        return;

    }

    Tix_WindowItemCalculateSize(iPtr);

    if (itPtr->ddPtr->sizeChangedProc != NULL) {

        itPtr->ddPtr->sizeChangedProc(iPtr);

    }

}

static void Tix_WindowItemLostStyle(iPtr)

    Tix_DItem * iPtr;

{

    TixWindowItem *itPtr = (TixWindowItem *)iPtr;

    itPtr->stylePtr = (TixWindowStyle*)TixGetDefaultDItemStyle(

        itPtr->ddPtr, &tix_WindowItemType, iPtr, NULL);

    Tix_WindowItemStyleChanged(iPtr);

}

/*

 *--------------------------------------------------------------

 *

 * SubWindowStructureProc --

 *

 *      This procedure is invoked whenever StructureNotify events

 *      occur for a window that's managed as part of a display

 *      item.  This procudure's only purpose is to clean up when

 *      windows are deleted.

 *

 * Results:

 *      None.

 *

 * Side effects:

 *      The window is disassociated from the window item when it is

 *      deleted.

 *

 *--------------------------------------------------------------

 */

static void

SubWindowStructureProc(clientData, eventPtr)

    ClientData clientData;      /* Pointer to record describing window item. */

    XEvent *eventPtr;           /* Describes what just happened. */

{

    TixWindowItem * itPtr = (TixWindowItem *)clientData;

    int oldWidth, oldHeight;

    if (eventPtr->type == DestroyNotify) {

        itPtr->tkwin = NULL;

    }

    oldWidth  = itPtr->size[0];

    oldHeight = itPtr->size[1];

    Tix_WindowItemCalculateSize((Tix_DItem*)itPtr);

    if (oldWidth != itPtr->size[0] || oldHeight != itPtr->size[1]) {

        if (itPtr->ddPtr->sizeChangedProc != NULL) {

            itPtr->ddPtr->sizeChangedProc((Tix_DItem*)itPtr);

        }

    }

}

/*

 *--------------------------------------------------------------

 *

 * SubWindowRequestProc --

 *

 *      This procedure is invoked whenever a window that's associated

 *      with a display item changes its requested dimensions.

 *

 * Results:

 *      None.

 *

 * Side effects:

 *      The size and location on the screen of the window may change,

 *      depending on the options specified for the window item.

 *

 *--------------------------------------------------------------

 */

static void

SubWindowRequestProc(clientData, tkwin)

    ClientData clientData;              /* Pointer to record for window item.*/

    Tk_Window tkwin;                    /* Window that changed its desired

                                         * size. */

{

    TixWindowItem *itPtr = (TixWindowItem *) clientData;

    Tix_WindowItemCalculateSize((Tix_DItem*)itPtr);

    if (itPtr->ddPtr->sizeChangedProc != NULL) {

        itPtr->ddPtr->sizeChangedProc((Tix_DItem*)itPtr);

    }

}

/*

 *--------------------------------------------------------------

 *

 * SubWindowLostSlaveProc --

 *

 *      This procedure is invoked by Tk whenever some other geometry

 *      claims control over a slave that used to be managed by us.

 *

 * Results:

 *      None.

 *

 * Side effects:

 *      Forgets all information about the slave.

 *

 *--------------------------------------------------------------

 */

        /* ARGSUSED */

static void

SubWindowLostSlaveProc(clientData, tkwin)

    ClientData clientData;      /* TixWindowItem structure for slave

                                 * window that was stolen away. */

    Tk_Window tkwin;            /* Tk's handle for the slave window. */

{

    TixWindowItem *itPtr = (TixWindowItem *) clientData;

    if (itPtr->tkwin == NULL) {

        return;

    } else {

        itPtr->tkwin = NULL;

    }

    Tk_DeleteEventHandler(tkwin, StructureNotifyMask,

        SubWindowStructureProc, (ClientData) itPtr);

    Tk_ManageGeometry(tkwin, (Tk_GeomMgr *)NULL,

        (ClientData) NULL);

    if (itPtr->ddPtr->tkwin != Tk_Parent(tkwin)) {

        Tk_UnmaintainGeometry(tkwin, itPtr->ddPtr->tkwin);

    }

    Tk_UnmapWindow(tkwin);

    /*

     * Inform the owner that the size has changed

     */

    Tix_WindowItemCalculateSize((Tix_DItem*)itPtr);

    if (itPtr->ddPtr->sizeChangedProc != NULL) {

        itPtr->ddPtr->sizeChangedProc((Tix_DItem*)itPtr);

    }

}

/*----------------------------------------------------------------------

 *  Tix_WindowItemUnmap --

 *

 *

 *----------------------------------------------------------------------

 */

static void

Tix_WindowItemUnmap(itPtr)

    TixWindowItem *itPtr;

{

    Tk_Window tkwin = itPtr->tkwin;

    if (tkwin == NULL) {

        return;

    }

    if (itPtr->ddPtr->tkwin != Tk_Parent(tkwin)) {

        Tk_UnmaintainGeometry(tkwin, itPtr->ddPtr->tkwin);

    }

    Tk_UnmapWindow(tkwin);

}

/*----------------------------------------------------------------------

 *

 *

 *                      Display styles

 *

 *

 *----------------------------------------------------------------------

 */

static Tix_DItemStyle *

Tix_WindowStyleCreate(interp, tkwin, diTypePtr, name)

    Tcl_Interp * interp;

    Tk_Window tkwin;

    char * name;

    Tix_DItemInfo * diTypePtr;

{

    TixWindowStyle * stylePtr =

      (TixWindowStyle *)ckalloc(sizeof(TixWindowStyle));

    stylePtr->pad[0]      = 0;

    stylePtr->pad[1]     = 0;

    stylePtr->anchor     = TK_ANCHOR_CENTER;

    return (Tix_DItemStyle *)stylePtr;

}

static int

Tix_WindowStyleConfigure(style, argc, argv, flags)

    Tix_DItemStyle *style;

    int argc;

    char ** argv;

    int flags;

{

    TixWindowStyle * stylePtr = (TixWindowStyle *)style;

    int oldPadX;

    int oldPadY;

    oldPadX = stylePtr->pad[0];

    oldPadY = stylePtr->pad[1];

    if (!(flags &TIX_DONT_CALL_CONFIG)) {

        if (Tk_ConfigureWidget(stylePtr->interp, stylePtr->tkwin,

            windowStyleConfigSpecs,

            argc, argv, (char *)stylePtr, flags) != TCL_OK) {

            return TCL_ERROR;

        }

    }

    if (oldPadX != stylePtr->pad[0] ||  oldPadY != stylePtr->pad[1]) {

        TixDItemStyleChanged(stylePtr->diTypePtr, (Tix_DItemStyle *)stylePtr);

    }

    return TCL_OK;

}

static void Tix_WindowStyleFree(style)

    Tix_DItemStyle *style;

{

    TixWindowStyle * stylePtr = (TixWindowStyle *)style;

    Tk_FreeOptions(windowStyleConfigSpecs, (char *)stylePtr,

        Tk_Display(stylePtr->tkwin), 0);

    ckfree((char *)stylePtr);

}

static void

Tix_WindowStyleSetTemplate(style, tmplPtr)

    Tix_DItemStyle* style;

    Tix_StyleTemplate * tmplPtr;

{

    TixWindowStyle * stylePtr = (TixWindowStyle *)style;

    if (tmplPtr->flags & TIX_DITEM_PADX) {

        stylePtr->pad[0] = tmplPtr->pad[0];

    }

    if (tmplPtr->flags & TIX_DITEM_PADY) {

        stylePtr->pad[1] = tmplPtr->pad[1];

    }

    Tix_WindowStyleConfigure(style, 0, 0, TIX_DONT_CALL_CONFIG);

}

/*----------------------------------------------------------------------

 *

 *

 *                  Mapped Window List Handling

 *

 *

 * Maintaining a list of mapped window items. Every host widgets should

 * call these functions so that unwanted window items will not appear

 * on the screen.

 *

 *

 *----------------------------------------------------------------------

 */

void Tix_SetWindowItemSerial(lPtr, iPtr, serial)

    Tix_LinkList * lPtr;

    Tix_DItem * iPtr;

    int serial;

{

    TixWindowItem * itPtr = (TixWindowItem *)iPtr;

    TixWindowItem * curr;

    Tix_ListIterator li;

    Tix_LinkListIteratorInit(&li);

    itPtr->serial = serial;

    for (Tix_LinkListStart(&mapWinListInfo, lPtr, &li);

         !Tix_LinkListDone(&li);

         Tix_LinkListNext (&mapWinListInfo, lPtr, &li)) {

        curr = (TixWindowItem*)li.curr;