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/*
* $Id$
*
* Copyright © 2004 Keith Packard
*
* 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 Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD 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.
*/
#include "twinint.h"
static void
_twin_widget_paint (twin_widget_t *widget)
{
if (widget->background)
{
twin_pixmap_t *pixmap = widget->window->pixmap;
twin_coord_t w = widget->extents.right - widget->extents.left;
twin_coord_t h = widget->extents.bottom - widget->extents.top;
twin_fill (pixmap, widget->background, TWIN_SOURCE, 0, 0, w, h);
}
}
twin_dispatch_result_t
_twin_widget_dispatch (twin_widget_t *widget, twin_event_t *event)
{
switch (event->kind) {
case TwinEventConfigure:
widget->extents = event->u.configure.extents;
widget->layout = TWIN_FALSE;
break;
case TwinEventPaint:
_twin_widget_paint (widget);
widget->paint = TWIN_FALSE;
break;
default:
break;
}
return TwinDispatchNone;
}
void
_twin_widget_init (twin_widget_t *widget,
twin_box_t *parent,
twin_window_t *window,
twin_rect_t preferred,
twin_stretch_t hstretch,
twin_stretch_t vstretch,
twin_dispatch_proc_t dispatch)
{
if (parent)
{
twin_widget_t **prev;
for (prev = &parent->children; *prev; prev = &(*prev)->next);
widget->next = *prev;
*prev = widget;
window = parent->widget.window;
}
else
widget->next = NULL;
widget->window = window;
widget->parent = parent;
widget->paint = TWIN_TRUE;
widget->preferred = preferred;
widget->extents = preferred;
widget->hstretch = hstretch;
widget->vstretch = vstretch;
widget->dispatch = dispatch;
widget->background = 0x00000000;
}
void
_twin_widget_queue_paint (twin_widget_t *widget)
{
while (widget->parent)
{
if (widget->paint)
return;
widget->paint = TWIN_TRUE;
widget = &widget->parent->widget;
}
_twin_toplevel_queue_paint (widget);
}
void
_twin_widget_queue_layout (twin_widget_t *widget)
{
while (widget->parent)
{
if (widget->layout)
return;
widget->layout = TWIN_TRUE;
widget->paint = TWIN_TRUE;
widget = &widget->parent->widget;
}
_twin_toplevel_queue_layout (widget);
}
twin_bool_t
_twin_widget_contains (twin_widget_t *widget,
twin_coord_t x,
twin_coord_t y)
{
return (0 <= x && x < _twin_widget_width(widget) &&
0 <= y && y < _twin_widget_height(widget));
}
twin_widget_t *
twin_widget_create (twin_box_t *parent,
twin_argb32_t background,
twin_coord_t width,
twin_coord_t height,
twin_stretch_t hstretch,
twin_stretch_t vstretch)
{
twin_widget_t *widget = malloc (sizeof (twin_widget_t));
twin_rect_t extents;
if (!widget)
return NULL;
extents.left = 0;
extents.top = 0;
extents.right = width;
extents.bottom = height;
_twin_widget_init (widget, parent, 0, extents, hstretch, vstretch,
_twin_widget_dispatch);
widget->background = background;
return widget;
}
void
twin_widget_set (twin_widget_t *widget, twin_argb32_t background)
{
widget->background = background;
_twin_widget_queue_paint (widget);
}
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