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MultiList.c
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1993-02-25
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/****************************************************************************
MultiList.c
This file contains the implementation of the Picasso List
widget. Its functionality is intended to be similar to
The Athena List widget, with some extra features added.
This code is loosely based on the Athena List source which
is why the MIT copyright notice appears below.
December 31, 1990, Brian Totty
****************************************************************************/
/*
* Copyright 1989 Massachusetts Institute of Technology
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of M.I.T. not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. M.I.T. makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* M.I.T. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL M.I.T.
* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Original Athena Author: Chris D. Peterson, MIT X Consortium
*/
#include <stdio.h>
#ifndef NOSTDHDRS
#include <stdlib.h>
#endif
#include <ctype.h>
#include <X11/IntrinsicP.h>
#include <X11/StringDefs.h>
#include "MultiListP.h"
/*===========================================================================*
D E C L A R A T I O N S A N D D E F I N I T I O N S
*===========================================================================*/
Pixmap XmuCreateStippledPixmap();
extern void XawInitializeWidgetSet();
#define SUPERCLASS &(simpleClassRec)
#define FontAscent(f) ((f)->max_bounds.ascent)
#define FontDescent(f) ((f)->max_bounds.descent)
#define FontH(f) (FontAscent(f) + FontDescent(f) + 2)
#define FontW(f,s) (XTextWidth(f,s,strlen(s)) + 1)
#define FontMaxCharW(f) ((f)->max_bounds.rbearing-(f)->min_bounds.lbearing+1)
#ifndef abs
#define abs(a) ((a) < 0 ? -(a) : (a))
#endif
#define max(a,b) ((a) > (b) ? (a) : (b))
#define min(a,b) ((a) < (b) ? (a) : (b))
#define XtStrlen(s) ((s) ? strlen(s) : 0)
#define TypeAlloc(t,n) (t *)malloc(sizeof(t) * n)
#define StrCopy(s) strcpy(TypeAlloc(char,strlen(s)+1),s)
#define StrCopyRetLength(s,lp) strcpy(TypeAlloc(char,(*lp=(strlen(s)+1))),s)
#define CoreFieldOffset(f) XtOffset(Widget,core.f)
#define SimpleFieldOffset(f) XtOffset(XfwfMultiListWidget,simple.f)
#define MultiListFieldOffset(f) XtOffset(XfwfMultiListWidget,multiList.f)
/*===========================================================================*
I N T E R N A L P R O C E D U R E D E C L A R A T I O N S
*===========================================================================*/
#if (!NeedFunctionPrototypes)
static void Initialize();
static void Redisplay();
static XtGeometryResult PreferredGeometry();
static void Resize();
static Boolean SetValues();
static void DestroyOldData();
static void InitializeNewData();
static void CreateNewGCs();
static void RecalcCoords();
static void NegotiateSizeChange();
static Boolean Layout();
static void RedrawAll();
static void RedrawItem();
static void RedrawRowColumn();
static void PixelToRowColumn();
static void RowColumnToPixels();
static Boolean RowColumnToItem();
static Boolean ItemToRowColumn();
static void Set();
static void Unset();
static void Toggle();
static void Open();
static void OpenMany();
static void Notify();
#else
static void Initialize(Widget request, Widget new);
static void Redisplay(XfwfMultiListWidget mlw,
XEvent * event, Region rectangle_union);
static XtGeometryResult PreferredGeometry(XfwfMultiListWidget mlw,
XtWidgetGeometry * parent_idea,
XtWidgetGeometry * our_idea);
static void Resize(XfwfMultiListWidget mlw);
static Boolean SetValues(XfwfMultiListWidget cpl,
XfwfMultiListWidget rpl,
XfwfMultiListWidget npl);
static void DestroyOldData(XfwfMultiListWidget mlw);
static void InitializeNewData(XfwfMultiListWidget mlw);
static void CreateNewGCs(XfwfMultiListWidget mlw);
static void RecalcCoords(XfwfMultiListWidget mlw,
int width_changeable,
int height_changeable);
static void NegotiateSizeChange(XfwfMultiListWidget mlw,
int width, int height);
static Boolean Layout(XfwfMultiListWidget mlw,
int w_changeable, int h_changeable,
Dimension * w_ptr, Dimension * h_ptr);
static void RedrawAll(XfwfMultiListWidget mlw);
static void RedrawItem(XfwfMultiListWidget mlw, int item_index);
static void RedrawRowColumn(XfwfMultiListWidget mlw,
int row, int column);
static void PixelToRowColumn(XfwfMultiListWidget mlw,
int x, int y, int *row_ptr, int *column_ptr);
static void RowColumnToPixels(XfwfMultiListWidget mlw,
int row, int col, int *x_ptr, int *y_ptr,
int *w_ptr, int *h_ptr);
static Boolean RowColumnToItem(XfwfMultiListWidget mlw,
int row, int column, int *item_ptr);
static Boolean ItemToRowColumn(XfwfMultiListWidget mlw,
int item_index, int *row_ptr, int *column_ptr);
static void Set(XfwfMultiListWidget mlw, XEvent * event,
String * params, Cardinal * num_params);
static void Unset(XfwfMultiListWidget mlw, XEvent * event,
String * params, Cardinal * num_params);
static void Toggle(XfwfMultiListWidget mlw, XEvent * event,
String * params, Cardinal * num_params);
static void Open(XfwfMultiListWidget mlw, XEvent * event,
String * params, Cardinal * num_params);
static void OpenMany(XfwfMultiListWidget mlw, XEvent * event,
String * params, Cardinal * num_params);
static void Notify(XfwfMultiListWidget mlw, XEvent * event,
String * params, Cardinal * num_params);
#endif
/*===========================================================================*
R E S O U R C E I N I T I A L I Z A T I O N
*===========================================================================*/
static XtResource resources[] =
{
{XtNwidth, XtCWidth, XtRDimension, sizeof(Dimension),
CoreFieldOffset(width), XtRString, "0"},
{XtNheight, XtCHeight, XtRDimension, sizeof(Dimension),
CoreFieldOffset(height), XtRString, "0"},
{XtNbackground, XtCBackground, XtRPixel, sizeof(Pixel),
CoreFieldOffset(background_pixel), XtRString, "XtDefaultBackground"},
{XtNcursor, XtCCursor, XtRCursor, sizeof(Cursor),
SimpleFieldOffset(cursor), XtRString, "left_ptr"},
{XtNforeground, XtCForeground, XtRPixel, sizeof(Pixel),
MultiListFieldOffset(foreground), XtRString, "XtDefaultForeground"},
{XtNhighlightForeground, XtCHForeground, XtRPixel, sizeof(Pixel),
MultiListFieldOffset(highlight_fg), XtRString, "XtDefaultBackground"},
{XtNhighlightBackground, XtCHBackground, XtRPixel, sizeof(Pixel),
MultiListFieldOffset(highlight_bg), XtRString, "XtDefaultForeground"},
{XtNcolumnSpacing, XtCSpacing, XtRDimension, sizeof(Dimension),
MultiListFieldOffset(column_space), XtRImmediate, (caddr_t) 8},
{XtNrowSpacing, XtCSpacing, XtRDimension, sizeof(Dimension),
MultiListFieldOffset(row_space), XtRImmediate, (caddr_t) 0},
{XtNdefaultColumns, XtCColumns, XtRInt, sizeof(int),
MultiListFieldOffset(default_cols), XtRImmediate, (caddr_t) 1},
{XtNforceColumns, XtCColumns, XtRBoolean, sizeof(Boolean),
MultiListFieldOffset(force_cols), XtRString, (caddr_t) "False"},
{XtNpasteBuffer, XtCBoolean, XtRBoolean, sizeof(Boolean),
MultiListFieldOffset(paste), XtRString, (caddr_t) "False"},
{XtNverticalList, XtCBoolean, XtRBoolean, sizeof(Boolean),
MultiListFieldOffset(row_major), XtRString, (caddr_t) "False"},
{XtNlongest, XtCLongest, XtRInt, sizeof(int),
MultiListFieldOffset(longest), XtRImmediate, (caddr_t) 0},
{XtNnumberStrings, XtCNumberStrings, XtRInt, sizeof(int),
MultiListFieldOffset(nitems), XtRImmediate, (caddr_t) 0},
{XtNfont, XtCFont, XtRFontStruct, sizeof(XFontStruct *),
MultiListFieldOffset(font), XtRString, "XtDefaultFont"},
{XtNlist, XtCList, XtRPointer, sizeof(char **),
MultiListFieldOffset(list), XtRString, NULL},
{XtNsensitiveArray, XtCList, XtRPointer, sizeof(Boolean *),
MultiListFieldOffset(sensitive_array), XtRString, NULL},
{XtNcallback, XtCCallback, XtRCallback, sizeof(caddr_t),
MultiListFieldOffset(callback), XtRCallback, NULL},
{XtNmaxSelectable, XtCValue, XtRInt, sizeof(int),
MultiListFieldOffset(max_selectable), XtRImmediate, (caddr_t) 1},
{XtNnotifyHighlights, XtCBoolean, XtRBoolean, sizeof(Boolean),
MultiListFieldOffset(notify_highlights), XtRString, "True"},
{XtNnotifyUnhighlights, XtCBoolean, XtRBoolean, sizeof(Boolean),
MultiListFieldOffset(notify_unhighlights), XtRString, "True"},
{XtNnotifyOpens, XtCBoolean, XtRBoolean, sizeof(Boolean),
MultiListFieldOffset(notify_opens), XtRString, "True"},
{XtNshadeSurplus, XtCBoolean, XtRBoolean, sizeof(Boolean),
MultiListFieldOffset(shade_surplus), XtRString, "True"},
{XtNcolumnWidth, XtCValue, XtRDimension, sizeof(Dimension),
MultiListFieldOffset(col_width), XtRImmediate, (caddr_t) 0},
{XtNrowHeight, XtCValue, XtRDimension, sizeof(Dimension),
MultiListFieldOffset(row_height), XtRImmediate, (caddr_t) 0},
};
/*===========================================================================*
A C T I O N A N D T R A N S L A T I O N T A B L E S
*===========================================================================*/
static char defaultTranslations[] =
" Shift<Btn1Down>: Toggle()\n\
<Btn1Down>: Set()\n\
<Btn3Down>: Unset()\n\
<Btn1Up>: Notify()\n\
<Btn3Up>: Notify()";
static XtActionsRec actions[] =
{
{"Notify", (XtActionProc) Notify},
{"Set", (XtActionProc) Set},
{"Toggle", (XtActionProc) Toggle},
{"Open", (XtActionProc) Open},
{"OpenMany", (XtActionProc) OpenMany},
{"Unset", (XtActionProc) Unset},
{NULL, (XtActionProc) NULL}
};
/*===========================================================================*
C L A S S A L L O C A T I O N
*===========================================================================*/
XfwfMultiListClassRec xfwfMultiListClassRec =
{
{
/* superclass */ (WidgetClass) SUPERCLASS,
/* class_name */ "XfwfMultiList",
/* widget_size */ sizeof(XfwfMultiListRec),
/* class_initialize */ NULL,
/* class_part_initialize*/ NULL,
/* class_inited */ FALSE,
/* initialize */ (XtInitProc) Initialize,
/* initialize_hook */ NULL,
/* realize */ XtInheritRealize,
/* actions */ actions,
/* num_actions */ XtNumber(actions),
/* resources */ resources,
/* resource_count */ XtNumber(resources),
/* xrm_class */ NULLQUARK,
/* compress_motion */ TRUE,
/* compress_exposure */ FALSE,
/* compress_enterleave */ TRUE,
/* visible_interest */ FALSE,
/* destroy */ NULL,
/* resize */ (XtWidgetProc) Resize,
/* expose */ (XtExposeProc) Redisplay,
/* set_values */ (XtSetValuesFunc) SetValues,
/* set_values_hook */ NULL,
/* set_values_almost */ XtInheritSetValuesAlmost,
/* get_values_hook */ NULL,
/* accept_focus */ NULL,
/* version */ XtVersion,
/* callback_private */ NULL,
/* tm_table */ defaultTranslations,
/* query_geometry */ (XtGeometryHandler)
PreferredGeometry,
/* display_accelerator */ XtInheritDisplayAccelerator,
/* extension */ NULL
}, /* Core Part */
{
/* change_sensitive */ XtInheritChangeSensitive
}
};
WidgetClass xfwfMultiListWidgetClass = (WidgetClass) & xfwfMultiListClassRec;
/*===========================================================================*
T O O L K I T M E T H O D S
*===========================================================================*/
/*---------------------------------------------------------------------------*
Initialize()
This procedure is called by the X toolkit to initialize
the widget instance. The hook to this routine is in the
initialize part of the core part of the class.
*---------------------------------------------------------------------------*/
/* ARGSUSED */
static void
Initialize(request, new)
Widget request,
new;
{
XfwfMultiListWidget mlw;
mlw = (XfwfMultiListWidget) new;
CreateNewGCs(mlw);
InitializeNewData(mlw);
RecalcCoords(mlw, (MultiListWidth(mlw) == 0),
(MultiListHeight(mlw) == 0));
} /* Initialize */
/*---------------------------------------------------------------------------*
Redisplay(mlw,event,rectangle_union)
This routine redraws the MultiList widget <mlw> based on the exposure
region requested in <event>.
*---------------------------------------------------------------------------*/
/* ARGSUSED */
static void
Redisplay(mlw, event, rectangle_union)
XfwfMultiListWidget mlw;
XEvent *event;
Region rectangle_union;
{
GC shade_gc;
int i,
x1,
y1,
w,
h,
x2,
y2,
row,
col,
ul_row,
ul_col,
lr_row,
lr_col;
if (MultiListShadeSurplus(mlw))
shade_gc = MultiListGrayGC(mlw);
else
shade_gc = MultiListEraseGC(mlw);
if (event == NULL) {
XFillRectangle(XtDisplay(mlw), XtWindow(mlw), shade_gc, 0, 0,
MultiListWidth(mlw), MultiListHeight(mlw));
for (i = 0; i < MultiListNumItems(mlw); i++)
RedrawItem(mlw, i);
}
else {
x1 = event->xexpose.x;
y1 = event->xexpose.y;
w = event->xexpose.width;
h = event->xexpose.height;
x2 = x1 + w;
y2 = y1 + h;
XFillRectangle(XtDisplay(mlw), XtWindow(mlw),
shade_gc, x1, y1, w, h);
PixelToRowColumn(mlw, x1, y1, &ul_row, &ul_col);
PixelToRowColumn(mlw, x2, y2, &lr_row, &lr_col);
lr_row = min(lr_row, MultiListNumRows(mlw) - 1);
lr_col = min(lr_col, MultiListNumCols(mlw) - 1);
for (col = ul_col; col <= lr_col; col++) {
for (row = ul_row; row <= lr_row; row++) {
RedrawRowColumn(mlw, row, col);
}
}
}
} /* End Redisplay */
/*---------------------------------------------------------------------------*
PreferredGeometry(mlw,parent_idea,our_idea)
This routine is called by the parent to tell us about the
parent's idea of our width and/or height. We then suggest
our preference through <our_idea> and return the information
to the parent.
*---------------------------------------------------------------------------*/
static XtGeometryResult
PreferredGeometry(mlw, parent_idea, our_idea)
XfwfMultiListWidget mlw;
XtWidgetGeometry *parent_idea,
*our_idea;
{
Dimension nw,
nh;
Boolean parent_wants_w,
parent_wants_h,
we_changed_size;
parent_wants_w = (parent_idea->request_mode) & CWWidth;
parent_wants_h = (parent_idea->request_mode) & CWHeight;
if (parent_wants_w)
nw = parent_idea->width;
else
nw = MultiListWidth(mlw);
if (parent_wants_h)
nh = parent_idea->height;
else
nh = MultiListHeight(mlw);
our_idea->request_mode = 0;
if (!parent_wants_w && !parent_wants_h)
return (XtGeometryYes);
we_changed_size = Layout(mlw, !parent_wants_w, !parent_wants_h, &nw, &nh);
our_idea->request_mode |= (CWWidth | CWHeight);
our_idea->width = nw;
our_idea->height = nh;
if (we_changed_size)
return (XtGeometryAlmost);
else
return (XtGeometryYes);
} /* End PreferredGeometry */
/*---------------------------------------------------------------------------*
Resize(mlw)
This function is called when the widget is being resized. It
recalculates the layout of the widget.
*---------------------------------------------------------------------------*/
static void
Resize(mlw)
XfwfMultiListWidget mlw;
{
Dimension width,
height;
width = MultiListWidth(mlw);
height = MultiListHeight(mlw);
Layout(mlw, False, False, &width, &height);
} /* End Resize */
/*---------------------------------------------------------------------------*
SetValues(cpl,rpl,npl)
This routine is called when the user is changing resources. <cpl>
is the current widget before the user's changes have been instituted.
<rpl> includes the original changes as requested by the user. <npl>
is the new resulting widget with the requested changes and with all
superclass changes already made.
*---------------------------------------------------------------------------*/
static Boolean
SetValues(cpl, rpl, npl)
XfwfMultiListWidget cpl,
rpl,
npl;
{
Boolean redraw,
recalc;
redraw = False;
recalc = False;
/* Graphic Context Changes */
if ((MultiListFG(cpl) != MultiListFG(npl)) ||
(MultiListBG(cpl) != MultiListBG(npl)) ||
(MultiListHighlightFG(cpl) != MultiListHighlightFG(npl)) ||
(MultiListHighlightBG(cpl) != MultiListHighlightBG(npl)) ||
(MultiListFont(cpl) != MultiListFont(npl))) {
XtDestroyGC(MultiListEraseGC(cpl));
XtDestroyGC(MultiListDrawGC(cpl));
XtDestroyGC(MultiListHighlightForeGC(cpl));
XtDestroyGC(MultiListHighlightBackGC(cpl));
XtDestroyGC(MultiListGrayGC(cpl));
CreateNewGCs(npl);
redraw = True;
}
/* Changes That Require Data Initialization */
if ((MultiListList(cpl) != MultiListList(npl)) ||
(MultiListSensitiveArray(cpl) != MultiListSensitiveArray(npl)) ||
(MultiListSensitive(cpl) != MultiListSensitive(npl)) ||
(MultiListAncesSensitive(cpl) != MultiListAncesSensitive(npl)) ||
(MultiListNumItems(cpl) != MultiListNumItems(npl)) ||
(MultiListMaxSelectable(cpl) != MultiListMaxSelectable(npl))) {
DestroyOldData(cpl);
InitializeNewData(npl);
recalc = True;
redraw = True;
}
/* Changes That Require Recalculating Coordinates */
if ((MultiListWidth(cpl) != MultiListWidth(npl)) ||
(MultiListHeight(cpl) != MultiListHeight(npl)) ||
(MultiListColumnSpace(cpl) != MultiListColumnSpace(npl)) ||
(MultiListRowSpace(cpl) != MultiListRowSpace(npl)) ||
(MultiListDefaultCols(cpl) != MultiListDefaultCols(npl)) ||
((MultiListForceCols(cpl) != MultiListForceCols(npl)) &&
(MultiListNumCols(cpl) != MultiListNumCols(npl))) ||
(MultiListRowMajor(cpl) != MultiListRowMajor(npl)) ||
(MultiListFont(cpl) != MultiListFont(npl)) ||
(MultiListLongest(cpl) != MultiListLongest(npl))) {
recalc = True;
redraw = True;
}
if (MultiListColWidth(cpl) != MultiListColWidth(npl)) {
XtWarning("columnWidth Resource Is Read-Only");
MultiListColWidth(npl) = MultiListColWidth(cpl);
}
if (MultiListRowHeight(cpl) != MultiListRowHeight(npl)) {
XtWarning("rowHeight Resource Is Read-Only");
MultiListRowHeight(npl) = MultiListRowHeight(cpl);
}
if (recalc) {
RecalcCoords(npl, !MultiListWidth(npl), !MultiListHeight(npl));
}
if (!XtIsRealized((Widget) cpl))
return (False);
else
return (redraw);
} /* End SetValues */
/*===========================================================================*
D A T A I N I T I A L I Z A T I O N
*===========================================================================*/
/*---------------------------------------------------------------------------*
DestroyOldData(mlw)
This routine frees the internal list item array and sets the
item count to 0. This is normally done immediately before
calling InitializeNewData() to rebuild the internal item
array from new user specified arrays.
*---------------------------------------------------------------------------*/
static void
DestroyOldData(mlw)
XfwfMultiListWidget mlw;
{
int i;
if (MultiListItemArray(mlw) != NULL) { /* Free Old List */
for (i = 0; i < MultiListNumItems(mlw); i++) {
free(MultiListItemString(MultiListNthItem(mlw, i)));
}
free(MultiListItemArray(mlw));
}
if (MultiListSelArray(mlw) != NULL)
free(MultiListSelArray(mlw));
MultiListSelArray(mlw) = NULL;
MultiListNumSelected(mlw) = 0;
MultiListItemArray(mlw) = NULL;
MultiListNumItems(mlw) = 0;
} /* End DestroyOldData */
/*---------------------------------------------------------------------------*
InitializeNewData(mlw)
This routine takes a MultiList widget <mlw> and builds up new
data item tables based on the string list and the sensitivity array.
All previous data should have already been freed. If the number
of items is 0, they will be counted, so the array must be NULL
terminated. If the list of strings is NULL, this is treated as
a list of 0 elements. If the sensitivity array is NULL, all
items are treated as sensitive.
When this routine is done, the string list and sensitivity array
fields will all be set to NULL, and the widget will not reference
them again.
*---------------------------------------------------------------------------*/
static void
InitializeNewData(mlw)
XfwfMultiListWidget mlw;
{
int i;
XfwfMultiListItem *item;
String *string_array;
string_array = MultiListList(mlw);
if (MultiListNumItems(mlw) == 0) { /* Count Elements */
if (MultiListList(mlw) == NULL) { /* No elements */
MultiListNumItems(mlw) = 0;
}
else {
for (i = 0; string_array[i] != NULL; i++);
MultiListNumItems(mlw) = i;
}
}
if (MultiListNumItems(mlw) == 0) { /* No Items */
MultiListItemArray(mlw) = NULL;
}
else {
MultiListItemArray(mlw) =
TypeAlloc(XfwfMultiListItem, MultiListNumItems(mlw));
for (i = 0; i < MultiListNumItems(mlw); i++) {
item = MultiListNthItem(mlw, i);
if (MultiListSensitiveArray(mlw) == NULL ||
(MultiListSensitiveArray(mlw)[i] == True)) {
MultiListItemSensitive(item) = True;
}
else {
MultiListItemSensitive(item) = False;
}
MultiListItemString(item) = StrCopy(string_array[i]);
MultiListItemHighlighted(item) = False;
}
}
if (MultiListMaxSelectable(mlw) == 0) {
MultiListSelArray(mlw) = NULL;
MultiListNumSelected(mlw) = 0;
}
else {
MultiListSelArray(mlw) =
TypeAlloc(int, MultiListMaxSelectable(mlw));
MultiListNumSelected(mlw) = 0;
}
MultiListList(mlw) = NULL;
MultiListSensitiveArray(mlw) = NULL;
} /* End InitializeNewData */
/*---------------------------------------------------------------------------*
CreateNewGCs(mlw)
This routine takes a MultiList widget <mlw> and creates a new set of
graphic contexts for the widget based on the colors, fonts, etc.
in the widget. Any previous GCs are assumed to have already been
destroyed.
*---------------------------------------------------------------------------*/
static void
CreateNewGCs(mlw)
XfwfMultiListWidget mlw;
{
XGCValues values;
unsigned int attribs;
attribs = GCForeground | GCBackground | GCFont;
values.foreground = MultiListFG(mlw);
values.background = MultiListBG(mlw);
values.font = MultiListFont(mlw)->fid;
MultiListDrawGC(mlw) = XtGetGC((Widget) mlw, attribs, &values);
values.foreground = MultiListBG(mlw);
MultiListEraseGC(mlw) = XtGetGC((Widget) mlw, attribs, &values);
values.foreground = MultiListHighlightFG(mlw);
values.background = MultiListHighlightBG(mlw);
MultiListHighlightForeGC(mlw) = XtGetGC((Widget) mlw, attribs, &values);
values.foreground = MultiListHighlightBG(mlw);
values.background = MultiListHighlightBG(mlw);
MultiListHighlightBackGC(mlw) = XtGetGC((Widget) mlw, attribs, &values);
attribs |= GCTile | GCFillStyle;
values.foreground = MultiListFG(mlw);
values.background = MultiListBG(mlw);
values.fill_style = FillTiled;
values.tile = XmuCreateStippledPixmap(XtScreen(mlw), MultiListFG(mlw),
MultiListBG(mlw), MultiListDepth(mlw));
MultiListGrayGC(mlw) = XtGetGC((Widget) mlw, attribs, &values);
} /* End CreateNewGCs */
/*===========================================================================*
L A Y O U T A N D G E O M E T R Y M A N A G E M E N T
*===========================================================================*/
/*---------------------------------------------------------------------------*
RecalcCoords(mlw,width_changeable,height_changeable)
This routine takes a MultiList widget <mlw> and recalculates
the coordinates, and item placement based on the current
width, height, and list of items. The <width_changeable> and
<height_changeable> indicate if the width and/or height can
be arbitrarily set.
This routine requires that the internal list data be initialized.
*---------------------------------------------------------------------------*/
static void
RecalcCoords(mlw, width_changeable, height_changeable)
XfwfMultiListWidget mlw;
int width_changeable,
height_changeable;
{
String str;
Dimension width,
height;
register int i,
text_width;
width = MultiListWidth(mlw);
height = MultiListHeight(mlw);
if (MultiListNumItems(mlw) != 0 && MultiListLongest(mlw) == 0) {
for (i = 0; i < MultiListNumItems(mlw); i++) {
str = MultiListItemString(MultiListNthItem(mlw, i));
text_width = FontW(MultiListFont(mlw), str);
MultiListLongest(mlw) = max(MultiListLongest(mlw),
text_width);
}
}
if (Layout(mlw, width_changeable, height_changeable, &width, &height)) {
NegotiateSizeChange(mlw, width, height);
}
} /* End RecalcCoords */
/*---------------------------------------------------------------------------*
NegotiateSizeChange(mlw,width,height)
This routine tries to change the MultiList widget <mlw> to have the
new size <width> by <height>. A negotiation will takes place
to try to change the size. The resulting size is not necessarily
the requested size.
*---------------------------------------------------------------------------*/
static void
NegotiateSizeChange(mlw, width, height)
XfwfMultiListWidget mlw;
int width,
height;
{
int attempt_number;
Boolean w_fixed,
h_fixed;
Dimension *w_ptr,
*h_ptr;
XtWidgetGeometry request,
reply;
request.request_mode = CWWidth | CWHeight;
request.width = width;
request.height = height;
for (attempt_number = 1; attempt_number <= 3; attempt_number++) {
switch (XtMakeGeometryRequest((Widget) mlw, &request, &reply)) {
case XtGeometryYes:
case XtGeometryNo:
return;
case XtGeometryAlmost:
switch (attempt_number) {
case 1:
w_fixed = (request.width != reply.width);
h_fixed = (request.height != reply.height);
w_ptr = &(reply.width);
h_ptr = &(reply.height);
Layout(mlw, !w_fixed, !h_fixed, w_ptr, h_ptr);
break;
case 2:
w_ptr = &(reply.width);
h_ptr = &(reply.height);
Layout(mlw, False, False, w_ptr, h_ptr);
break;
case 3:
return;
}
break;
default:
XtAppWarning(XtWidgetToApplicationContext((Widget) mlw),
"MultiList Widget: Unknown geometry return.");
break;
}
request = reply;
}
} /* End NegotiateSizeChange */
/*---------------------------------------------------------------------------*
Boolean Layout(mlw,w_changeable,h_changeable,w_ptr,h_ptr)
This routine tries to generate a layout for the MultiList widget
<mlw>. The Layout routine is free to arbitrarily set the width
or height if the corresponding variables <w_changeable> and
<h_changeable> are set True. Otherwise the original width or
height in <w_ptr> and <h_ptr> are used as fixed values. The
resulting new width and height are stored back through the
<w_ptr> and <h_ptr> pointers. False is returned if no size
change was done, True is returned otherwise.
*---------------------------------------------------------------------------*/
static Boolean
Layout(mlw, w_changeable, h_changeable, w_ptr, h_ptr)
XfwfMultiListWidget mlw;
int w_changeable,
h_changeable;
Dimension *w_ptr,
*h_ptr;
{
Boolean size_changed = False;
/*
* If force columns is set, then always use the number
* of columns specified by default_cols.
*/
MultiListColWidth(mlw) = MultiListLongest(mlw) +
MultiListColumnSpace(mlw);
MultiListRowHeight(mlw) = FontH(MultiListFont(mlw)) +
MultiListRowSpace(mlw);
if (MultiListForceCols(mlw)) {
MultiListNumCols(mlw) = max(MultiListDefaultCols(mlw), 1);
if (MultiListNumItems(mlw) == 0)
MultiListNumRows(mlw) = 1;
else
MultiListNumRows(mlw) = (MultiListNumItems(mlw) - 1) /
MultiListNumCols(mlw) + 1;
if (w_changeable) {
*w_ptr = MultiListNumCols(mlw) *
MultiListColWidth(mlw);
size_changed = True;
}
else {
MultiListColWidth(mlw) = (int)*w_ptr /
MultiListNumCols(mlw);
}
if (h_changeable) {
*h_ptr = MultiListNumRows(mlw) *
MultiListRowHeight(mlw);
size_changed = True;
}
return (size_changed);
}
/*
* If both width and height are free to change then use
* default_cols to determine the number of columns and set
* the new width and height to just fit the window.
*/
if (w_changeable && h_changeable) {
MultiListNumCols(mlw) = max(MultiListDefaultCols(mlw), 1);
if (MultiListNumItems(mlw) == 0)
MultiListNumRows(mlw) = 1;
else
MultiListNumRows(mlw) = (MultiListNumItems(mlw) - 1) /
MultiListNumCols(mlw) + 1;
*w_ptr = MultiListNumCols(mlw) * MultiListColWidth(mlw);
*h_ptr = MultiListNumRows(mlw) * MultiListRowHeight(mlw);
return (True);
}
/*
* If the width is fixed then use it to determine the
* number of columns. If the height is free to move
* (width still fixed) then resize the height of the
* widget to fit the current MultiList exactly.
*/
if (!w_changeable) {
MultiListNumCols(mlw) = *w_ptr / MultiListColWidth(mlw);
MultiListNumCols(mlw) = max(MultiListNumCols(mlw), 1);
MultiListNumRows(mlw) = (MultiListNumItems(mlw) - 1) /
MultiListNumCols(mlw) + 1;
MultiListColWidth(mlw) = (int)*w_ptr / MultiListNumCols(mlw);
if (h_changeable) {
*h_ptr = MultiListNumRows(mlw) * MultiListRowHeight(mlw);
size_changed = True;
}
return (size_changed);
}
/*
* The last case is xfree and !yfree we use the height to
* determine the number of rows and then set the width to
* just fit the resulting number of columns.
*/
MultiListNumRows(mlw) = *h_ptr / MultiListRowHeight(mlw);
MultiListNumRows(mlw) = max(MultiListNumRows(mlw), 1);
MultiListNumCols(mlw) = (MultiListNumItems(mlw) - 1) /
MultiListNumRows(mlw) + 1;
*w_ptr = MultiListNumCols(mlw) * MultiListColWidth(mlw);
return (True);
} /* End Layout */
/*===========================================================================*
R E D R A W R O U T I N E S
*===========================================================================*/
/*---------------------------------------------------------------------------*
RedrawAll(mlw)
This routine simple calls Redisplay to redraw the entire
MultiList widget <mlw>.
*---------------------------------------------------------------------------*/
static void
RedrawAll(mlw)
XfwfMultiListWidget mlw;
{
Redisplay(mlw, NULL, NULL);
} /* End RedrawAll */
/*---------------------------------------------------------------------------*
RedrawItem(mlw,item_index)
This routine redraws the item with index <item_index> in the
MultiList widget <mlw>. If the item number is bad, nothing is drawn.
*---------------------------------------------------------------------------*/
static void
RedrawItem(mlw, item_index)
XfwfMultiListWidget mlw;
int item_index;
{
int row,
column;
if (ItemToRowColumn(mlw, item_index, &row, &column)) {
RedrawRowColumn(mlw, row, column);
}
} /* End RedrawItem */
/*---------------------------------------------------------------------------*
RedrawRowColumn(mlw,row,column)
This routine paints the item in row/column position <row>,<column>
on the MultiList widget <mlw>. If the row/column coordinates are
outside the widget, nothing is drawn. If the position is empty,
blank space is drawn.
*---------------------------------------------------------------------------*/
static void
RedrawRowColumn(mlw, row, column)
XfwfMultiListWidget mlw;
int row,
column;
{
GC bg_gc,
fg_gc;
XfwfMultiListItem *item;
int ul_x,
ul_y,
str_x,
str_y,
w,
h,
item_index,
has_item,
text_h;
if (!XtIsRealized((Widget) mlw))
return;
has_item = RowColumnToItem(mlw, row, column, &item_index);
RowColumnToPixels(mlw, row, column, &ul_x, &ul_y, &w, &h);
if (has_item == False) { /* No Item */
if (MultiListShadeSurplus(mlw))
bg_gc = MultiListGrayGC(mlw);
else
bg_gc = MultiListEraseGC(mlw);
}
else {
item = MultiListNthItem(mlw, item_index);
if (!MultiListItemSensitive(item)) { /* Disabled */
bg_gc = MultiListEraseGC(mlw);
fg_gc = MultiListGrayGC(mlw);
}
else if (MultiListItemHighlighted(item)) { /* Selected */
bg_gc = MultiListHighlightBackGC(mlw);
fg_gc = MultiListHighlightForeGC(mlw);
}
else { /* Normal */
bg_gc = MultiListEraseGC(mlw);
fg_gc = MultiListDrawGC(mlw);
}
}
XFillRectangle(XtDisplay(mlw), XtWindow(mlw), bg_gc, ul_x, ul_y, w, h);
if (has_item == True) {
text_h = min(
(int)(FontH(MultiListFont(mlw)) + MultiListRowSpace(mlw)),
(int)MultiListRowHeight(mlw));
str_x = ul_x + MultiListColumnSpace(mlw) / 2;
str_y = ul_y + FontAscent(MultiListFont(mlw)) +
(int)(MultiListRowHeight(mlw) - text_h) / 2;
XDrawString(XtDisplay(mlw), XtWindow(mlw), fg_gc,
str_x, str_y, MultiListItemString(item),
strlen(MultiListItemString(item)));
}
} /* End RedrawRowColumn */
/*===========================================================================*
I T E M L O C A T I O N R O U T I N E S
*===========================================================================*/
/*---------------------------------------------------------------------------*
void PixelToRowColumn(mlw,x,y,row_ptr,column_ptr)
This routine takes pixel coordinates <x>, <y> and converts
the pixel coordinate into a row/column coordinate. This row/column
coordinate can then easily be converted into the specific item
in the list via the function RowColumnToItem().
If the pixel lies in blank space outside of the items, the
row & column numbers will be outside of the range of normal
row & columns numbers, but will correspond to the row & column
of the item, if an item was actually there.
*---------------------------------------------------------------------------*/
static void
PixelToRowColumn(mlw, x, y, row_ptr, column_ptr)
XfwfMultiListWidget mlw;
int x,
y,
*row_ptr,
*column_ptr;
{
*row_ptr = y / (int)MultiListRowHeight(mlw);
*column_ptr = x / (int)MultiListColWidth(mlw);
} /* End PixelToRowColumn */
/*---------------------------------------------------------------------------*
void RowColumnToPixels(mlw,row,col,x_ptr,y_ptr,w_ptr,h_ptr)
This routine takes a row/column coordinate <row>,<col> and
converts it into the bounding pixel rectangle which is returned.
*---------------------------------------------------------------------------*/
static void
RowColumnToPixels(mlw, row, col, x_ptr, y_ptr, w_ptr, h_ptr)
XfwfMultiListWidget mlw;
int row,
col,
*x_ptr,
*y_ptr,
*w_ptr,
*h_ptr;
{
*x_ptr = col * MultiListColWidth(mlw);
*y_ptr = row * MultiListRowHeight(mlw);
*w_ptr = MultiListColWidth(mlw);
*h_ptr = MultiListRowHeight(mlw);
} /* End RowColumnToPixels */
/*---------------------------------------------------------------------------*
Boolean RowColumnToItem(mlw,row,column,item_ptr)
This routine takes a row number <row> and a column number <column>
and tries to resolve this row and column into the index of the
item in this position of the MultiList widget <mlw>. The resulting
item index is placed through <item_ptr>. If there is no item at
this location, False is returned, else True is returned.
*---------------------------------------------------------------------------*/
static Boolean
RowColumnToItem(mlw, row, column, item_ptr)
XfwfMultiListWidget mlw;
int row,
column,
*item_ptr;
{
register int x_stride,
y_stride;
if (row < 0 || row >= MultiListNumRows(mlw) ||
column < 0 || column >= MultiListNumCols(mlw)) {
return (False);
}
if (MultiListRowMajor(mlw)) {
x_stride = 1;
y_stride = MultiListNumCols(mlw);
}
else {
x_stride = MultiListNumRows(mlw);
y_stride = 1;
}
*item_ptr = row * y_stride + column * x_stride;
if (*item_ptr >= MultiListNumItems(mlw))
return (False);
else
return (True);
} /* End RowColumnToItem */
/*---------------------------------------------------------------------------*
Boolean ItemToRowColumn(mlw,item_index,row_ptr,column_ptr)
This routine takes an item number <item_index> and attempts
to convert the index into row and column numbers stored through
<row_ptr> and <column_ptr>. If the item number does not
corespond to a valid item, False is returned, else True is
returned.
*---------------------------------------------------------------------------*/
static Boolean
ItemToRowColumn(mlw, item_index, row_ptr, column_ptr)
XfwfMultiListWidget mlw;
int item_index,
*row_ptr,
*column_ptr;
{
if (item_index < 0 || item_index >= MultiListNumItems(mlw)) {
return (False);
}
if (MultiListRowMajor(mlw)) {
*row_ptr = item_index / MultiListNumCols(mlw);
*column_ptr = item_index % MultiListNumCols(mlw);
}
else {
*row_ptr = item_index % MultiListNumRows(mlw);
*column_ptr = item_index / MultiListNumRows(mlw);
}
return (True);
} /* End ItemToRowColumn */
/*===========================================================================*
E V E N T A C T I O N H A N D L E R S
*===========================================================================*/
/*---------------------------------------------------------------------------*
Set(mlw,event,params,num_params)
This function sets a single text item in the MultiList. Any previously
selected items will be unselected, even if the user later aborts
the click. The item clicked on will be highlighted, and the
MultiListMostRecentItem(mlw) variable will be set to the item clicked
on if any, or -1 otherwise.
*---------------------------------------------------------------------------*/
/* ARGSUSED */
static void
Set(mlw, event, params, num_params)
XfwfMultiListWidget mlw;
XEvent *event;
String *params;
Cardinal *num_params;
{
int click_x,
click_y;
int status,
item_index,
row,
column;
click_x = event->xbutton.x;
click_y = event->xbutton.y;
PixelToRowColumn(mlw, click_x, click_y, &row, &column);
XfwfMultiListUnhighlightAll(mlw);
status = RowColumnToItem(mlw, row, column, &item_index);
if (status == False)
item_index = -1;
XfwfMultiListHighlightItem(mlw, item_index);
MultiListMostRecentAct(mlw) = XfwfMultiListActionHighlight;
MultiListMostRecentItem(mlw) = item_index;
} /* End Set */
/*---------------------------------------------------------------------------*
Unset(mlw,event,params,num_params)
This function sets a single text item in the MultiList. If the item
is already unset, then nothing happens. Otherwise, the item is
unset and the selection array and selection count are updated.
*---------------------------------------------------------------------------*/
/* ARGSUSED */
static void
Unset(mlw, event, params, num_params)
XfwfMultiListWidget mlw;
XEvent *event;
String *params;
Cardinal *num_params;
{
int click_x,
click_y;
int status,
item_index,
row,
column;
click_x = event->xbutton.x;
click_y = event->xbutton.y;
PixelToRowColumn(mlw, click_x, click_y, &row, &column);
status = RowColumnToItem(mlw, row, column, &item_index);
if (status == False)
item_index = -1;
XfwfMultiListUnhighlightItem(mlw, item_index);
MultiListMostRecentAct(mlw) = XfwfMultiListActionUnhighlight;
MultiListMostRecentItem(mlw) = item_index;
} /* End Unset */
/*---------------------------------------------------------------------------*
Toggle(mlw,event,params,num_params)
This function toggles a text item in the MultiList, while leaving the
other selections intact (up to the allowed number of selections).
The item clicked on will be highlighted, and
MultiListMostRecentItem(mlw) will be set to the item number clicked
on, or -1 if no item was clicked on.
*---------------------------------------------------------------------------*/
/* ARGSUSED */
static void
Toggle(mlw, event, params, num_params)
XfwfMultiListWidget mlw;
XEvent *event;
String *params;
Cardinal *num_params;
{
int click_x,
click_y;
int status,
item_index,
row,
column;
click_x = event->xbutton.x;
click_y = event->xbutton.y;
PixelToRowColumn(mlw, click_x, click_y, &row, &column);
status = RowColumnToItem(mlw, row, column, &item_index);
if (status == False)
item_index = -1;
MultiListMostRecentAct(mlw) = XfwfMultiListToggleItem(mlw, item_index);
MultiListMostRecentItem(mlw) = item_index;
} /* End Toggle */
/*---------------------------------------------------------------------------*
Open(mlw,event,params,num_params)
This routine handles the opening (normally double clicking)
of an item. All previous selections will be unselected, the
clicked item will be selected, and the OPEN action will be recorded.
*---------------------------------------------------------------------------*/
/* ARGSUSED */
static void
Open(mlw, event, params, num_params)
XfwfMultiListWidget mlw;
XEvent *event;
String *params;
Cardinal *num_params;
{
int click_x,
click_y;
int status,
item_index,
row,
column;
click_x = event->xbutton.x;
click_y = event->xbutton.y;
PixelToRowColumn(mlw, click_x, click_y, &row, &column);
XfwfMultiListUnhighlightAll(mlw);
status = RowColumnToItem(mlw, row, column, &item_index);
if (status == False)
item_index = -1;
XfwfMultiListHighlightItem(mlw, item_index);
MultiListMostRecentAct(mlw) = XfwfMultiListActionOpen;
MultiListMostRecentItem(mlw) = item_index;
} /* End Open */
/*---------------------------------------------------------------------------*
OpenMany(mlw,event,params,num_params)
This routine handles the opening (normally double clicking)
of an item. All previous selections will remain selected,
which is why this routine is called OpenMany. Many selections
can be returned on an Open. The clicked item will be selected,
and the OPEN action will be recorded.
*---------------------------------------------------------------------------*/
/* ARGSUSED */
static void
OpenMany(mlw, event, params, num_params)
XfwfMultiListWidget mlw;
XEvent *event;
String *params;
Cardinal *num_params;
{
int click_x,
click_y;
int status,
item_index,
row,
column;
click_x = event->xbutton.x;
click_y = event->xbutton.y;
PixelToRowColumn(mlw, click_x, click_y, &row, &column);
status = RowColumnToItem(mlw, row, column, &item_index);
if (status == False)
item_index = -1;
XfwfMultiListHighlightItem(mlw, item_index);
MultiListMostRecentAct(mlw) = XfwfMultiListActionOpen;
MultiListMostRecentItem(mlw) = item_index;
} /* End OpenMany */
/*---------------------------------------------------------------------------*
Notify(mlw,event,params,num_params)
This function performs the Notify action, which is what happens
when a user releases a button after clicking on an item. If there
was no item under the click, or if the item was insensitive, then
Notify simply returns. Otherwise, notify notifies the user via
a callback of the current list of selected items.
In addition, if the XtNpasteBuffer resource is true and a valid
sensitive item was clicked on, the name of the last clicked on item
will be placed in the X cut buffer (buf(0)).
*---------------------------------------------------------------------------*/
/* ARGSUSED */
static void
Notify(mlw, event, params, num_params)
XfwfMultiListWidget mlw;
XEvent *event;
String *params;
Cardinal *num_params;
{
String string;
int final_x,
final_y;
Boolean item_valid;
int item_index,
string_length,
row,
column;
XfwfMultiListReturnStruct ret_value;
final_x = event->xbutton.x;
final_y = event->xbutton.y;
PixelToRowColumn(mlw, final_x, final_y, &row, &column);
item_valid = RowColumnToItem(mlw, row, column, &item_index);
if (!item_valid || (item_index != MultiListMostRecentItem(mlw))) {
if (MultiListMostRecentItem(mlw) != -1) { /* Moved Away */
XfwfMultiListUnhighlightItem(mlw,
MultiListMostRecentItem(mlw));
}
else { /* Bad Click */
XfwfMultiListUnhighlightAll(mlw);
if (MultiListNotifyUnsets(mlw)) {
ret_value.action =
XfwfMultiListActionUnhighlight;
ret_value.item = -1;
ret_value.string = NULL;
ret_value.num_selected =
MultiListNumSelected(mlw);
ret_value.selected_items =
MultiListSelArray(mlw);
XtCallCallbacks((Widget) mlw, XtNcallback,
&ret_value);
}
}
return;
}
string = MultiListItemString(MultiListNthItem(mlw, item_index));
string_length = strlen(string);
if (MultiListMostRecentAct(mlw) == XfwfMultiListActionHighlight) {
if (MultiListPaste(mlw))
XStoreBytes(XtDisplay(mlw), string, string_length);
}
if (((MultiListMostRecentAct(mlw) == XfwfMultiListActionHighlight) &&
(MultiListNotifySets(mlw) == True)) ||
((MultiListMostRecentAct(mlw) == XfwfMultiListActionUnhighlight) &&
(MultiListNotifyUnsets(mlw) == True)) ||
((MultiListMostRecentAct(mlw) == XfwfMultiListActionOpen) &&
(MultiListNotifyOpens(mlw) == True))) {
ret_value.action = MultiListMostRecentAct(mlw);
ret_value.item = MultiListMostRecentItem(mlw);
ret_value.string = string;
ret_value.num_selected = MultiListNumSelected(mlw);
ret_value.selected_items = MultiListSelArray(mlw);
XtCallCallbacks((Widget) mlw, XtNcallback, (caddr_t) & ret_value);
}
} /* End Notify */
/*===========================================================================*
U S E R C A L L A B L E U T I L I T Y R O U T I N E S
*===========================================================================*/
/*---------------------------------------------------------------------------*
Boolean XfwfMultiListHighlightItem(mlw,item_index)
This routine selects an item with index <item_index> in the
MultiList widget <mlw>. If a maximum number of selections is specified
and exceeded, the earliest selection will be unselected. If
<item_index> doesn't correspond to an item the most recently
clicked item will be set to -1 and this routine will immediately
return, otherwise the most recently clicked item will be set to the
current item. If the clicked on item is not sensitive, or if the
click is not on an item, False is returned, else True is returned.
*---------------------------------------------------------------------------*/
Boolean
XfwfMultiListHighlightItem(mlw, item_index)
XfwfMultiListWidget mlw;
int item_index;
{
XfwfMultiListItem *item;
if (MultiListMaxSelectable(mlw) == 0)
return (False);;
if (item_index < 0 || item_index >= MultiListNumItems(mlw)) {
MultiListMostRecentItem(mlw) = -1;
return (False);
}
item = MultiListNthItem(mlw, item_index);
if (MultiListItemSensitive(item) == False) {
XfwfMultiListUnhighlightAll(mlw);
return (False);
}
MultiListMostRecentItem(mlw) = item_index;
if (MultiListItemHighlighted(item) == True)
return (True);
if (MultiListNumSelected(mlw) == MultiListMaxSelectable(mlw)) {
XfwfMultiListUnhighlightItem(mlw, MultiListSelArray(mlw)[0]);
}
MultiListItemHighlighted(item) = True;
MultiListSelArray(mlw)[MultiListNumSelected(mlw)] = item_index;
++MultiListNumSelected(mlw);
RedrawItem(mlw, item_index);
return (True);
} /* End XfwfMultiListHighlightItem */
/*---------------------------------------------------------------------------*
XfwfMultiListHighlightAll(mlw)
This routine highlights all highlightable items in the MultiList
widget <mlw>, up to the maximum number of allowed highlightable
items;
*---------------------------------------------------------------------------*/
void
XfwfMultiListHighlightAll(mlw)
XfwfMultiListWidget mlw;
{
int i;
XfwfMultiListItem *item;
MultiListNumSelected(mlw) = 0;
for (i = 0; i < MultiListNumItems(mlw); i++) {
item = MultiListNthItem(mlw, i);
MultiListItemHighlighted(item) = True;
}
for (i = 0; i < MultiListNumItems(mlw); i++) {
if (MultiListNumSelected(mlw) == MultiListMaxSelectable(mlw))
break;
item = MultiListNthItem(mlw, i);
MultiListItemHighlighted(item) = True;
MultiListSelArray(mlw)[MultiListNumSelected(mlw)] = i;
++MultiListNumSelected(mlw);
}
RedrawAll(mlw);
} /* End XfwfMultiListHighlightAll */
/*---------------------------------------------------------------------------*
XfwfMultiListUnhighlightItem(mlw,item_index)
This routine unselects the item with index <item_index> in the
MultiList widget <mlw>. If <item_index> doesn't correspond to a
selected item, then nothing will happen. Otherwise, the item
is unselected and the selection array and count are updated.
*---------------------------------------------------------------------------*/
void
XfwfMultiListUnhighlightItem(mlw, item_index)
XfwfMultiListWidget mlw;
int item_index;
{
int i;
XfwfMultiListItem *item;
if (MultiListMaxSelectable(mlw) == 0)
return;
if (item_index < 0 || item_index >= MultiListNumItems(mlw))
return;
item = MultiListNthItem(mlw, item_index);
if (MultiListItemHighlighted(item) == False)
return;
MultiListItemHighlighted(item) = False;
for (i = 0; i < MultiListNumSelected(mlw); i++)
if (MultiListSelArray(mlw)[i] == item_index)
break;
for (i = i + 1; i < MultiListNumSelected(mlw); i++)
MultiListSelArray(mlw)[i - 1] = MultiListSelArray(mlw)[i];
--MultiListNumSelected(mlw);
RedrawItem(mlw, item_index);
} /* End XfwfMultiListUnhighlightItem */
/*---------------------------------------------------------------------------*
XfwfMultiListUnhighlightAll(mlw)
This routine unhighlights all items in the MultiList widget <mlw>.
*---------------------------------------------------------------------------*/
void
XfwfMultiListUnhighlightAll(mlw)
XfwfMultiListWidget mlw;
{
int i;
XfwfMultiListItem *item;
for (i = 0; i < MultiListNumItems(mlw); i++) {
item = MultiListNthItem(mlw, i);
if (MultiListItemHighlighted(item))
XfwfMultiListUnhighlightItem(mlw, i);
}
MultiListNumSelected(mlw) = 0;
} /* End XfwfMultiListUnhighlightAll */
/*---------------------------------------------------------------------------*
int XfwfMultiListToggleItem(mlw,item_index)
This routine highlights the item with index <item_index>
if it is unhighlighted and unhighlights it if it is already
highlighted. The action performed by the toggle is returned
(XfwfMultiListActionHighlight or XfwfMultiListActionUnhighlight).
*---------------------------------------------------------------------------*/
int
XfwfMultiListToggleItem(mlw, item_index)
XfwfMultiListWidget mlw;
int item_index;
{
XfwfMultiListItem *item;
if (MultiListMaxSelectable(mlw) == 0)
return (XfwfMultiListActionNothing);
if (item_index < 0 || item_index >= MultiListNumItems(mlw))
return (XfwfMultiListActionNothing);
item = MultiListNthItem(mlw, item_index);
if (MultiListItemHighlighted(item)) {
XfwfMultiListUnhighlightItem(mlw, item_index);
return (XfwfMultiListActionUnhighlight);
}
else {
XfwfMultiListHighlightItem(mlw, item_index);
return (XfwfMultiListActionHighlight);
}
} /* End XfwfMultiListToggleItem */
/*---------------------------------------------------------------------------*
XfwfMultiListReturnStruct *XfwfMultiListGetHighlighted(mlw)
This routine takes a MultiList widget <mlw> and returns a
XfwfMultiListReturnStruct whose num_selected and selected_items
fields contain the highlight information. The action field
is set to MULTILIST_ACTION_STATUS, and the item_index and string
fields are invalid.
*---------------------------------------------------------------------------*/
XfwfMultiListReturnStruct *
XfwfMultiListGetHighlighted(mlw)
XfwfMultiListWidget mlw;
{
XfwfMultiListItem *item;
static XfwfMultiListReturnStruct ret_value;
ret_value.action = XfwfMultiListActionOpen;
if (MultiListNumSelected(mlw) == 0) {
ret_value.item = -1;
ret_value.string = NULL;
}
else {
ret_value.item = MultiListSelArray(mlw)
[MultiListNumSelected(mlw) - 1];
item = MultiListNthItem(mlw, ret_value.item);
ret_value.string = MultiListItemString(item);
}
ret_value.num_selected = MultiListNumSelected(mlw);
ret_value.selected_items = MultiListSelArray(mlw);
return (&ret_value);
} /* End XfwfMultiListGetHighlighted */
/*---------------------------------------------------------------------------*
Boolean XfwfMultiListIsHighlighted(mlw,item_index)
This routine checks if the item with index <item_index>
is highlighted and returns True or False depending. If
<item_index> is invalid, False is returned.
*---------------------------------------------------------------------------*/
Boolean
XfwfMultiListIsHighlighted(mlw, item_index)
XfwfMultiListWidget mlw;
int item_index;
{
XfwfMultiListItem *item;
if (item_index < 0 || item_index >= MultiListNumItems(mlw))
return (False);
item = MultiListNthItem(mlw, item_index);
return (MultiListItemHighlighted(item));
} /* End XfwfMultiListIsHighlighted */
/*---------------------------------------------------------------------------*
Boolean XfwfMultiListGetItemInfo(mlw,item_index,str_ptr,h_ptr,s_ptr)
This routine returns the string, highlight status and
sensitivity information for the item with index <item_index>
via the pointers <str_ptr>, <h_ptr> and <s_ptr>. If the item
index is invalid, False is returned, else True is returned.
*---------------------------------------------------------------------------*/
Boolean
XfwfMultiListGetItemInfo(mlw, item_index, str_ptr, h_ptr, s_ptr)
XfwfMultiListWidget mlw;
int item_index;
String *str_ptr;
Boolean *h_ptr,
*s_ptr;
{
XfwfMultiListItem *item;
if (item_index < 0 || item_index >= MultiListNumItems(mlw))
return (False);
item = MultiListNthItem(mlw, item_index);
*str_ptr = MultiListItemString(item);
*h_ptr = MultiListItemHighlighted(item);
*s_ptr = MultiListItemSensitive(item);
return (True);
} /* End XfwfMultiListGetItemInfo */
/*---------------------------------------------------------------------------*
XfwfMultiListSetNewData(mlw,list,nitems,longest,resize,
sensitivity_array)
This routine will set a new set of strings <list> into the
MultiList widget <mlw>. If <resize> is True, the MultiList widget will
try to resize itself.
*---------------------------------------------------------------------------*/
void
XfwfMultiListSetNewData(mlw, list, nitems, longest, resize, sensitivity_array)
XfwfMultiListWidget mlw;
String *list;
int nitems,
longest;
int resize;
Boolean *sensitivity_array;
{
DestroyOldData(mlw);
MultiListList(mlw) = list;
MultiListNumItems(mlw) = max(nitems, 0);
MultiListLongest(mlw) = max(longest, 0);
MultiListSensitiveArray(mlw) = sensitivity_array;
InitializeNewData(mlw);
RecalcCoords(mlw, resize, resize);
if (XtIsRealized((Widget) mlw))
Redisplay(mlw, NULL, NULL);
} /* End XfwfMultiListSetNewData */