/* $XConsortium: toolkitaw.c,v 5.9 94/04/17 20:46:14 converse Exp $ */

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/*
 * toolkitaw.c  -- implements the toolkit-independent interface used
 * by the comparison tool.  This implementation uses Athena Widgets
 *
 * See top comment of toolkit.c for comments on the design
 * of this interface.
 * For all height, width, row, or column arguments, supplying a value
 * of -1 directs the function to use default or toolkit-determined
 * values.
 *
 */

#include "toolkitaw.h"		/* includes Intrinsic.h */
#include <X11/StringDefs.h>
#include <X11/Xaw/Label.h>
#include <X11/Xaw/Command.h>
#include <X11/Xaw/List.h>
#include <X11/Xaw/Form.h>
#include <X11/Xaw/Viewport.h>
#include <X11/Xaw/Paned.h>
#include <stdio.h>		/* for fatal error message routine */

/* copied from inspector.c */	/* broken interface */
#define IMAGE_SIZE 400
#define IMAGE_WIDTH IMAGE_SIZE
#define IMAGE_HEIGHT IMAGE_SIZE
#define CONTROL_WIDTH 160
#define IMAGE_LABEL_HEIGHT 30

static Widget toplevel;
static XtAppContext appContext;

/* For keeping track of control widget layout.  We make an assumption that
 * widgets in a control window are created in order, using the column
 * argument to determine whether it goes on the same row as the last one.
 */
static Widget lastwidget=NULL;  	/* last one created */
static Widget lastleftwidget=NULL; 	/* last one beginning a row */
static Widget widgetAbove = NULL;	/* first one in the previous row */
static Widget parentWidget = NULL;	/* parent of last one created */
static Widget messagebar = NULL;	/* "reflabel_win" widget */
static Widget pexbar = NULL;

/* Assume one list, items indexed beginning at 0, and monotonically added. */
static String *list = NULL;
static int listCount = 0;
static Cardinal listSize = 0;


/* Initialize the toolkit.  The toolkit may look for toolkit-specific 
 * arguments in the command line.
 */
void tk_init(argc, argv)
    int argc;
    char *argv[];
{
    /* 
     * Easier to create the toplevel shell widget now,
     * and keep it around for the tk_create_main_window call.
     * result kept in the static variable toplevel.
     */
    toplevel = XtAppInitialize(&appContext, "Inspector", NULL, 0,
			       &argc, argv, NULL, NULL, 0);
}


/* Create a main application widget with given label, height, and width,
 * Returning the display in display_return and widet as the return value.
 */
TK_Main_Window tk_create_main_window(label, height, width, display_return)
    char *label; 
    int height,width;
    Display **display_return;
{
    Arg args[5];
    Cardinal n = 0;
    Widget paned;

    /* toplevel already created by tk_init: create a paned child */
    if (height != -1) {
	XtSetArg(args[n], XtNheight, height);	n++;
    }
    if (width != -1) {
	XtSetArg(args[n], XtNwidth, width);	n++;
    }
    paned = XtCreateManagedWidget("main", panedWidgetClass, toplevel, args, n);

    /* create the first pane, containing graphics and controls */
    n = 0;
    XtSetArg(args[n], XtNshowGrip, False);			n++;
    pexbar = XtCreateManagedWidget("pexbar", panedWidgetClass, paned, args, n);

    /* create the second pane, containing the title bar */
    n = 0;
    XtSetArg(args[n], XtNshowGrip, False);	n++;
    XtSetArg(args[n], XtNlabel, label);		n++;
    (void) XtCreateManagedWidget("titlebar", labelWidgetClass, paned, args, n);

    *display_return = XtDisplay(toplevel);
    return paned;
}


/* Create a subwindow suitable for buttons, as a child of the given parent.
 * A -1 for any of x, y, height or width yields the widget default value.
 */
TK_Control_Window tk_create_control_window(parent, x, y, height, width)
    TK_Main_Window parent;
    int x, y, height, width;
{
    Widget control_win;
    Cardinal n = 0;
    Arg args[15];
    static int pass = 0;	/* sickness and evil */

    if (! pass) {	/* dependent upon order of caller */

	/* create the third pane, containing the messages */
	n = 0;
	XtSetArg(args[n], XtNshowGrip, False);			n++;
	XtSetArg(args[n], XtNorientation, XtorientHorizontal);	n++;
	if (height != -1) {
	    XtSetArg(args[n], XtNheight, height);		n++;
	}
	if (width != -1) {
	    XtSetArg(args[n], XtNwidth, width);			n++;
	}
	if (x != -1) {
	    XtSetArg(args[n], XtNx, x);				n++;
	}
	if (y != -1) {
	    XtSetArg(args[n], XtNy, y);				n++;
	}
	/* create child of third pane */
	messagebar = XtCreateManagedWidget("messagebar", panedWidgetClass,
					   parent, args, n);
	control_win = messagebar;
	pass++;

    } else {			/* control panel at right */
	Widget pexpane, graphicspane, controlpane, controlform;

	/* create a paned child of graphics pane */
	n = 0;
	XtSetArg(args[n], XtNshowGrip, False);			n++;
	XtSetArg(args[n], XtNorientation, XtorientHorizontal);	n++;
	pexpane = XtCreateManagedWidget("pexpane", panedWidgetClass, pexbar,
					args, n);
	/* create the graphics container */
	n = 0;
	XtSetArg(args[n], XtNshowGrip, False);			n++;
	XtSetArg(args[n], XtNwidth, IMAGE_WIDTH * 2);		n++;
	XtSetArg(args[n], XtNheight, IMAGE_HEIGHT);		n++;
	graphicspane = XtCreateManagedWidget("graphicspane", panedWidgetClass,
					     pexpane, args, n);
	/* create the control panel container */
	n = 0;
	XtSetArg(args[n], XtNshowGrip, False);			n++;
	XtSetArg(args[n], XtNwidth, CONTROL_WIDTH);		n++;
	XtSetArg(args[n], XtNheight, IMAGE_HEIGHT);		n++;
	controlpane = XtCreateManagedWidget("controlpane", panedWidgetClass,
					    pexpane, args, n);
	/* create the control form, the parent of the control buttons */
	n = 0;
	XtSetArg(args[n], XtNshowGrip, False);			n++;
	controlform = XtCreateManagedWidget("controlform", formWidgetClass,
					    controlpane, args, n);
	control_win = controlform;
    }
    return control_win;
}


XID tk_get_xid(window)
    TK_Main_Window window;
{
    XtRealizeWidget(toplevel);
    return (XID) XtWindow(window);
}


static void SetConstraints(parent, row, col, args, num_args)
    Widget	parent;
    int		row, col;
    Arg		*args;		/* in out */
    Cardinal	*num_args;	/* in out */
{
    Cardinal n = *num_args;

    if (parentWidget && parent != parentWidget) {
	lastwidget = NULL;
	lastleftwidget = NULL;
	widgetAbove = NULL;
    }

    /* Set up geometry constraints for Form widget parent */
    if (col == 1) {
	/* widget is in new row */
	XtSetArg(args[n], XtNfromVert, lastleftwidget);	n++;
    } else {
	/* widget is in same row as last widget */
	XtSetArg(args[n], XtNfromHoriz, lastwidget);	n++;
	XtSetArg(args[n], XtNfromVert, widgetAbove);	n++;
    }
    *num_args = n;
}

static void UpdateConstraints(parent, child, col)
    Widget parent;
    Widget child;
    int col;
{
    parentWidget = parent;
    lastwidget = child;
    if (col == 1) {
	widgetAbove = lastleftwidget;
	lastleftwidget = child;
    }
}   


/* Create a button in the given control window, at designated row & col.
 * proc identifies a procedure to be called when the button is pressed.
 */
TK_Button tk_create_button(parent, row, col, label, proc, active_status)
    TK_Control_Window parent;
    int row, col;
    char *label;	/* may have white space in it */
    void (*proc)();
    int active_status;
{
    Cardinal n=0;
    Widget button;
    Arg args[10];

    SetConstraints(parent, row, col, args, &n);
    XtSetArg(args[n], XtNresizable, False);		n++;
    XtSetArg(args[n], XtNlabel, label);			n++;
    if (active_status != TK_BUTTON_ACTIVE) {
	XtSetArg(args[n], XtNsensitive, False);		n++;
    }
    button = XtCreateManagedWidget("button", commandWidgetClass, parent,
				   args, n);
    if (proc) XtAddCallback(button, XtNcallback, proc, (XtPointer) NULL);
    UpdateConstraints(parent, button, col);
    return button;
}


/* Create a text output item in the given control window, 
 * at designated row & col, with the initial contents init_string.
 */
TK_Message_Item tk_create_message_item(parent, row, col, label)
    TK_Control_Window parent;
    int row, col;
    char *label;
{
    Widget message;
    Cardinal n=0;
    Arg args[10];

    if (parent == messagebar) {
	XtSetArg(args[n], XtNshowGrip, False);		n++;
	XtSetArg(args[n], XtNallowResize, True);	n++;
    }
    else {
	SetConstraints(parent, row, col, args, &n);
        XtSetArg(args[n], XtNresizable, True);		n++;
    }
    XtSetArg(args[n], XtNlabel, label);			n++;
    message = XtCreateManagedWidget("message", labelWidgetClass, parent,
				    args, n);
    if (parent != messagebar)
	UpdateConstraints(parent, message, col);
    return message;
}


/* Set the active status of the button to be active */
void tk_activate_button(button)
    TK_Button button;
{
    XtSetSensitive(button, TRUE);
}


/* Set the active status of the button to be inactive */
void tk_deactivate_button(button)
    TK_Button button;
{
    XtSetSensitive(button, FALSE);
}


/* Set the button label */
void tk_set_button_label(button,label)
    TK_Button button;
    char *label;
{
    Arg arg[1];
    XtSetArg(arg[0], XtNlabel, label);
    XtSetValues(button, arg, (Cardinal) 1);
}


/* Set the text displayed in msg_item to "text" */
void tk_set_message(msg_item, text)
    TK_Message_Item msg_item;
    char *text;
{
    XtVaSetValues(msg_item,
		  XtNlabel, text,
		  NULL);
}


TK_List tk_create_list(parent, row, col, notify_proc)
    TK_Control_Window parent;
    int row, col;
    int (*notify_proc)();
{
    Widget viewport, list;
    Cardinal n=0;
    Arg args[10];

    /* Set up geometry constraints for Form widget parent of viewport */
    SetConstraints(parent, row, col, args, &n);
    XtSetArg(args[n], XtNheight,  120);			n++;
    XtSetArg(args[n], XtNallowVert, True);		n++;
    XtSetArg(args[n], XtNuseRight, True);		n++;
    viewport = XtCreateManagedWidget("viewport", viewportWidgetClass,
				     parent, args, n);

    n=0;
    XtSetArg(args[n], XtNverticalList,  True);		n++;
    XtSetArg(args[n], XtNdefaultColumns, 1);		n++;
    XtSetArg(args[n], XtNforceColumns,  True);		n++;
    list = XtCreateManagedWidget("list", listWidgetClass, viewport, args, n);
    if (notify_proc) 
	XtAddCallback(list, XtNcallback, notify_proc, (XtPointer) NULL);
    UpdateConstraints(parent, viewport, col);
    return list;
}


/* Return a pointer to the string of the currently selected list item, 
 * and set index_return to that element's index.  If no list item is 
 * selected, return NULL.
 */
char * tk_get_selected_list_item(w, index_return)
    TK_List w;
    int *index_return;
{
    XawListReturnStruct *selectedItem;

    selectedItem = XawListShowCurrent(w);
    if (selectedItem->list_index == XAW_LIST_NONE)
	return (char *) NULL;
    *index_return = selectedItem->list_index;
    return selectedItem->string;
}


/* Return a pointer to the string of the list item specified by index */
char * tk_get_list_item(w, indx)
    TK_List w;
    int indx;
{
    if (indx >= listCount)
	fatal("toolkitaw: tk_get_list_item: illegal list reference\n");
    return list[indx];
}


/* Return the number of rows in the list */
int tk_get_list_length(w)
    TK_List w;
{
    return listCount;
}


/* Set the indexed list item to have value "string".  
 * Note that this function is only for changing the value; 
 * tk_insert_list_item should be used to create the item.
 */
void tk_set_list_item(w, indx, value)
    TK_List w;
    int indx;
    char *value;
{
    Cardinal n;
    Arg args[3];

    if (indx >= listCount)
	fatal("toolkitaw: tk_set_list_item: illegal insertion\n");

    list[indx] = value;
    n = 0;
    XtSetArg(args[n], XtNnumberStrings, listCount);	n++;
    XtSetArg(args[n], XtNlongest, 0);			n++;
    XtSetArg(args[n], XtNlist, list);			n++;
    XtSetValues(w, args, n);
    printf("tk_set_list_item(list,%d,%s)\n", indx, value);
}


void tk_insert_list_item(w, indx, value)
    TK_List w;
    int indx;
    char *value;
{
    Cardinal n;
    Arg args[3];

    if (indx != listCount)
	fatal("toolkitaw: tk_insert_list: nonmonotonic insertion\n");

    if (listCount >= listSize) {
	listSize += 100;
	list = (String *) XtRealloc((char *)list, listSize * sizeof(String));
    }
    list[listCount++] = value;	/* assume copying is unnecessary */
    n = 0;
    XtSetArg(args[n], XtNnumberStrings, listCount);	n++;
    XtSetArg(args[n], XtNlongest, 0);			n++;
    XtSetArg(args[n], XtNlist, list);			n++;
    XtSetValues(w, args, n);
}


/* Delete the list item indexed by index; if there is an item after it,
 * make that the selected item.
 */
void tk_delete_list_item(w, indx)
    TK_List w;
    int indx;
{
    String * newList;
    Cardinal n;
    Arg args[3];

    if (indx >= listCount) return;
    listCount--;
    newList = (String *) XtMalloc(listSize * sizeof(String));
    if (indx > 0) bcopy(list, newList, indx * sizeof(String));
    if (indx < listCount) bcopy(list[indx+1], newList[indx],
				(listCount - indx) * sizeof(String));
    n = 0;
    XtSetArg(args[n], XtNnumberStrings, listCount);	n++;
    XtSetArg(args[n], XtNlongest, 0);			n++;
    XtSetArg(args[n], XtNlist, newList);		n++;
    XtSetValues(w, args, n);
    XtFree((char *)list);
    list = newList;

    if (indx < listCount) XawListHighlight(w, indx);
}


void tk_main_loop(main_win)
    TK_Main_Window main_win;
{
    XtAppMainLoop(appContext);
}


static fatal(s)	/* bleh */
    char *s;
{
    fprintf(stderr, "%s\n",s);
    exit(1);
}


#if 0 /* never called */
/*
 * Create an X window as a subwindow of the supplied parent window,
 * returning its id.  *display_return is set to the current default display. 
 */
Drawable tk_create_X_drawable_window(parent, height, width,
				     repaint_proc, display_return)
    TK_Main_Window parent;
    int height,width,(*repaint_proc)();
    Display **display_return;
{
    /* create a Core widget and return its Xid */
    Widget core_widget;
    Drawable drawable;
    Cardinal n = 0;
    Arg args[4];

    if (height != -1) {
	XtSetArg(args[n], XtNheight, height); n++;
    }
    if (width != -1) {
	XtSetArg(args[n], XtNwidth, width); n++;
    }
    core_widget = XtCreateManagedWidget("canvas", coreWidgetClass, parent,
					args, n);
    *display_return = XtDisplay(parent);
    XtRealizeWidget(core_widget);
    drawable = XtWindow(core_widget);
    return(drawable);
    
}
#endif /* never called */