/usr/share/doc/xviewg/examples/extensions/panel_items/wizzy.c is in xview-examples 3.2p1.4-28.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#ifdef sccs
static char sccsid[] = "@(#)wizzy.c 1.1 91/02/28";
#endif
#endif
#include <xview/frame.h>
#include <xview/panel.h>
#include <xview/wizzy.h>
#define WIZZY_CAN_ACCEPT_KBD_FOCUS
#define WIZZY_PRIVATE(item) \
XV_PRIVATE(Wizzy_info, Xv_panel_wizzy, item)
/* Item specific definitions */
#define INITIAL_OFFSET 10
#define BLOCK_WIDTH 16
#define BLOCK_HEIGHT 12
/* XView functions */
Pkg_private int wizzy_init();
Pkg_private Xv_opaque wizzy_set_avlist();
Pkg_private Xv_opaque wizzy_get_attr();
Pkg_private int wizzy_destroy();
/* Panel Item Operations
*
* Declare all wizzy item handler procedures used in the Ops Vector Table
*/
static void wizzy_begin_preview();
static void wizzy_update_preview();
static void wizzy_cancel_preview();
static void wizzy_accept_preview();
static void wizzy_accept_menu();
static void wizzy_accept_key();
static void wizzy_paint();
static void wizzy_remove();
static void wizzy_restore();
static void wizzy_layout();
#ifdef WIZZY_CAN_ACCEPT_KBD_FOCUS
static void wizzy_accept_kbd_focus();
static void wizzy_yield_kbd_focus();
#endif /* WIZZY_CAN_ACCEPT_KBD_FOCUS */
/*
* Panel Operations Vector Table for this item.
*
* If any of the operations do not apply, then use NULL as the handler address.
*/
static Panel_ops ops = {
panel_default_handle_event, /* handle_event() */
wizzy_begin_preview, /* begin_preview() */
wizzy_update_preview, /* update_preview() */
wizzy_cancel_preview, /* cancel_preview() */
wizzy_accept_preview, /* accept_preview() */
wizzy_accept_menu, /* accept_menu() */
wizzy_accept_key, /* accept_key() */
wizzy_clear, /* clear() */
wizzy_paint, /* paint() */
wizzy_resize, /* resize() */
wizzy_remove, /* remove() */
wizzy_restore, /* restore() */
wizzy_layout, /* layout() */
#ifdef WIZZY_CAN_ACCEPT_KBD_FOCUS
wizzy_accept_kbd_focus, /* accept_kbd_focus() */
wizzy_yield_kbd_focus, /* yield_kbd_focus() */
#else
NULL, /* accept_kbd_focus() */
NULL, /* yield_kbd_focus() */
#endif /* WIZZY_CAN_ACCEPT_KBD_FOCUS */
NULL /* extension: reserved for future use */
};
typedef struct wizzy_info {
Panel_item public_self;/* back pointer to object */
/*
* Wizzy private data goes here.
* *** All references to these entries is for illustration
* *** purposes only. They are to be replaced with your
* *** item's private data requirements.
*/
Rect block; /* Some rectangle within the item */
GC gc; /* Graphics Context */
int offset; /* The block's offset */
Panel panel; /* Panel this item is owned by */
#ifdef WIZZY_CAN_ACCEPT_KBD_FOCUS
int has_kbd_focus; /* TRUE or FALSE */
#endif /* WIZZY_CAN_ACCEPT_KBD_FOCUS */
} Wizzy_info;
/* ========================================================================= */
/* -------------------- XView Functions -------------------- */
Pkg_private int
wizzy_init(panel, item, avlist)
Panel panel;
Panel_item item;
Attr_avlist avlist;
{
Xv_panel_wizzy *item_object = (Xv_panel_wizzy *) item;
Display *display;
Wizzy_info *dp;
XGCValues values;
XID xid;
dp = xv_alloc(Wizzy_info);
item_object->private_data = (Xv_opaque) dp;
dp->public_self = item;
/*
* Initialize non-zero private data
*/
display = (Display *) XV_DISPLAY_FROM_WINDOW(panel);
xid = (XID) xv_get(panel, XV_XID);
values.foreground = BlackPixel(display, 0);
dp->gc = XCreateGC(display, xid, GCForeground, &values);
dp->offset = INITIAL_OFFSET;
dp->panel = panel;
/*
* Process avlist for create-only attributes.
*/
for ( ; *avlist; avlist = attr_next(avlist)) {
switch ((int) avlist[0]) {
/* case <create_only_attr>: */
default:
break;
}
}
xv_set(item,
PANEL_OPS_VECTOR, &ops,
#ifdef WIZZY_CAN_ACCEPT_KBD_FOCUS
PANEL_ACCEPT_KEYSTROKE, TRUE,
#endif /* WIZZY_CAN_ACCEPT_KBD_FOCUS */
0);
return XV_OK;
}
Pkg_private Xv_opaque
wizzy_set_avlist(item, avlist)
Panel_item item;
Attr_avlist avlist;
{
Wizzy_info *dp = WIZZY_PRIVATE(item);
Xv_opaque result;
Rect value_rect;
if (*avlist != XV_END_CREATE) {
/* Call generic item set code to handle layout attributes.
* Prevent panel_redisplay_item from being called in item_set_avlist.
*/
xv_set(dp->panel, PANEL_NO_REDISPLAY_ITEM, TRUE, 0);
result = xv_super_set_avlist(item, &xv_panel_wizzy_pkg, avlist);
xv_set(dp->panel, PANEL_NO_REDISPLAY_ITEM, FALSE, 0);
if (result != XV_OK)
return result;
}
/* Parse Attribute-Value List. Complete initialization upon
* receipt of XV_END_CREATE.
*/
for ( ; *avlist; avlist = attr_next(avlist)) {
switch ((int) avlist[0]) {
case WIZZY_OFFSET:
dp->offset = (int) avlist[1];
break;
case XV_END_CREATE:
value_rect = *(Rect *) xv_get(item, PANEL_ITEM_VALUE_RECT);
rect_construct(&dp->block,
value_rect.r_left + dp->offset,
value_rect.r_top,
BLOCK_HEIGHT, BLOCK_WIDTH);
value_rect = rect_bounding(&value_rect, &dp->block);
/* Note: Setting the value rect will cause the item rect to be
* recalculated as the enclosing rect containing both the label
* and value rects.
*/
xv_set(item,
PANEL_ITEM_VALUE_RECT, &value_rect,
0);
break;
default:
break;
}
}
return XV_OK; /* return XV_ERROR if something went wrong... */
}
/*ARGSUSED*/
Pkg_private Xv_opaque
wizzy_get_attr(item, status, which_attr, avlist)
Panel_item item;
int *status; /* set to XV_ERROR if something goes wrong */
register Attr_attribute which_attr;
va_list avlist;
{
Wizzy_info *dp = WIZZY_PRIVATE(item);
switch (which_attr) {
case WIZZY_OFFSET:
return (Xv_opaque) dp->offset;
default:
*status = XV_ERROR;
return (Xv_opaque) 0;
}
}
/*ARGSUSED*/
Pkg_private int
wizzy_destroy(item, status)
Panel_item item;
Destroy_status status;
{
Wizzy_info *dp = WIZZY_PRIVATE(item);
if ((status == DESTROY_CHECKING) || (status == DESTROY_SAVE_YOURSELF))
return XV_OK;
#ifdef WIZZY_CAN_ACCEPT_KBD_FOCUS
wizzy_remove(item);
#endif /* WIZZY_CAN_ACCEPT_KBD_FOCUS */
free(dp);
return XV_OK;
}
/* -------------------- Panel Item Operations -------------------- */
/*ARGSUSED*/
static void
wizzy_begin_preview(item, event)
Panel_item item;
Event *event;
{
/*
* SELECT-down has occurred over the item.
* Highlight the item to show the active feedback,
* but do not take any action yet.
*/
}
/*ARGSUSED*/
static void
wizzy_update_preview(item, event)
Panel_item item;
Event *event;
{
/*
* The pointer as been dragged within the item after
* beginning a preview. Adjust the highlighting to
* reflect the new position of the pointer, and update
* appropriate private data.
*/
}
/*ARGSUSED*/
static void
wizzy_cancel_preview(item, event)
Panel_item item;
Event *event;
{
/*
* The pointer as been dragged out of the item after
* beginning a preview. Remove the active feedback
* (i.e., unhighlight) and clean up any private data.
*/
}
/*ARGSUSED*/
static void
wizzy_accept_preview(item, event)
Panel_item item;
Event *event;
{
/*
* The SELECT button has been released over the item.
* Remove the active feedback (i.e., unhighlight),
* paint the busy feedback,
* perform the action associated with the item,
* and then remove the busy feedback.
*/
}
/*ARGSUSED*/
static void
wizzy_accept_menu(item, event)
Panel_item item;
Event *event;
{
/*
* The MENU button has been depressed over the item.
* Show the menu attached to the item, if any.
*/
}
/*ARGSUSED*/
static void
wizzy_accept_key(item, event)
Panel_item item;
Event *event;
{
/*
* A keyboard event has occurred. Process the key,
* and update the display.
*/
}
static void
wizzy_clear(item_public)
Panel_item item_public;
{
/*
* Clear the item rectangle. Update any private data as needed.
*/
panel_default_clear_item(item_public);
}
/*ARGSUSED*/
static void
wizzy_paint(item)
Panel_item item;
{
Display *display;
Wizzy_info *dp = WIZZY_PRIVATE(item);
Panel_paint_window *ppw; /* ptr to Panel_paint_window structure */
Xv_Window pw; /* paint window */
XID xid;
/*
* Do everything necessary to paint the entire item.
* Don't go outside of the PANEL_ITEM_RECT, the rectangle describing the
* boundaries of the item.
*/
/* Paint the label */
panel_paint_label(item);
/* Paint the value.
* In this wizzy example, we paint something into dp->block.
*/
display = (Display *) XV_DISPLAY_FROM_WINDOW(dp->panel);
for (ppw = (Panel_paint_window *)
xv_get(dp->panel, PANEL_FIRST_PAINT_WINDOW);
ppw;
ppw = ppw->next) {
pw = ppw->pw; /* pw = the actual window to paint in */
xid = (XID) xv_get(pw, XV_XID);
XFillRectangle(display, xid, dp->gc, dp->block.r_left, dp->block.r_top,
dp->block.r_width, dp->block.r_height);
}
}
/*ARGSUSED*/
static void
wizzy_resize(item)
Panel_item item;
{
/*
* The panel has been resized. Recalculate any extend-to-edge dimensions.
*/
}
/*ARGSUSED*/
static void
wizzy_remove(item)
Panel_item item;
{
/*
* The item has been made hidden via xv_set(item, XV_SHOW, FALSE, avlist).
*/
#ifdef WIZZY_CAN_ACCEPT_KBD_FOCUS
Wizzy_info *dp = WIZZY_PRIVATE(item);
Panel_status *panel_status;
/*
* Only reassign the keyboard focus to another item if the panel isn't
* being destroyed.
*/
panel_status = (Panel_status *) xv_get(dp->panel, PANEL_STATUS);
if (!panel_status->destroying &&
xv_get(dp->panel, PANEL_CARET_ITEM) == item)
(void) panel_advance_caret(dp->panel);
#endif /* WIZZY_CAN_ACCEPT_KBD_FOCUS */
}
/*ARGSUSED*/
static void
wizzy_restore(item)
Panel_item item;
{
/*
* The item has been made visible via xv_set(item, XV_SHOW, TRUE, avlist).
*/
#ifdef WIZZY_CAN_ACCEPT_KBD_FOCUS
Wizzy_info *dp = WIZZY_PRIVATE(item);
/* If no item has the keyboard focus, then give this item the focus */
if (!xv_get(dp->panel, PANEL_CARET_ITEM))
xv_set(dp->panel, PANEL_CARET_ITEM, item, 0);
#endif /* WIZZY_CAN_ACCEPT_KBD_FOCUS */
}
/*ARGSUSED*/
static void
wizzy_layout(item, deltas)
Panel_item item;
Rect *deltas;
{
/*
* The item has been moved. Adjust the item coordinates.
*/
Wizzy_info *dp = WIZZY_PRIVATE(item);
dp->block.r_left += deltas->r_left;
dp->block.r_top += deltas->r_top;
}
#ifdef WIZZY_CAN_ACCEPT_KBD_FOCUS
/*ARGSUSED*/
static void
wizzy_accept_kbd_focus(item)
Panel_item item;
{
/*
* The keyboard focus has been set to this item.
* Change the keyboard focus feedback to active, and
* update private data as necessary.
*/
Wizzy_info *dp = WIZZY_PRIVATE(item);
Frame frame;
int x;
int y;
dp->has_kbd_focus = TRUE;
frame = xv_get(dp->panel, WIN_FRAME);
if (xv_get(dp->panel, PANEL_LAYOUT) == PANEL_HORIZONTAL) {
xv_set(frame, FRAME_FOCUS_DIRECTION, FRAME_FOCUS_UP, 0);
x = dp->block.r_left +
(dp->block.r_width - FRAME_FOCUS_UP_WIDTH)/2;
y = dp->block.r_top + dp->block.r_height - FRAME_FOCUS_UP_HEIGHT/2;
} else {
xv_set(frame, FRAME_FOCUS_DIRECTION, FRAME_FOCUS_RIGHT, 0);
x = dp->block.r_left - FRAME_FOCUS_RIGHT_WIDTH/2;
y = dp->block.r_top +
(dp->block.r_height - FRAME_FOCUS_RIGHT_HEIGHT)/2;
}
if (x < 0)
x = 0;
if (y < 0)
y = 0;
panel_show_focus_win(item, frame, x, y);
}
/*ARGSUSED*/
static void
wizzy_yield_kbd_focus(item)
Panel_item item;
{
/*
* The keyboard focus has been removed from this item.
* Change the keyboard focus feedback to inactive, and
* update private data as necessary.
*/
Wizzy_info *dp = WIZZY_PRIVATE(item);
Xv_Window focus_win;
Frame frame;
dp->has_kbd_focus = FALSE;
frame = xv_get(dp->panel, WIN_FRAME);
focus_win = xv_get(frame, FRAME_FOCUS_WIN);
xv_set(focus_win, XV_SHOW, FALSE, 0);
}
#endif /* WIZZY_CAN_ACCEPT_KBD_FOCUS */
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