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/*
* File : view.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2009-10-16 Bernard first version
* 2010-09-24 Bernard fix view destroy issue
*/
#include <rtgui/dc.h>
#include <rtgui/rtgui_system.h>
#include <rtgui/widgets/view.h>
#include <rtgui/widgets/workbench.h>
static void _rtgui_view_constructor(rtgui_view_t *view)
{
/* init view */
rtgui_widget_set_event_handler(RTGUI_WIDGET(view),
rtgui_view_event_handler);
view->modal_show = RT_FALSE;
view->title = RT_NULL;
}
static void _rtgui_view_destructor(rtgui_view_t *view)
{
/* remove view from workbench */
if (RTGUI_WIDGET(view)->parent != RT_NULL)
{
rtgui_workbench_t *workbench;
if (view->modal_show == RT_TRUE)
rtgui_view_end_modal(view, RTGUI_MODAL_CANCEL);
workbench = RTGUI_WORKBENCH(RTGUI_WIDGET(view)->parent);
rtgui_workbench_remove_view(workbench, view);
}
if (view->title != RT_NULL)
{
rt_free(view->title);
view->title = RT_NULL;
}
}
DEFINE_CLASS_TYPE(view, "view",
RTGUI_CONTAINER_TYPE,
_rtgui_view_constructor,
_rtgui_view_destructor,
sizeof(struct rtgui_view));
rt_bool_t rtgui_view_event_handler(struct rtgui_widget* widget, struct rtgui_event* event)
{
struct rtgui_view* view = (struct rtgui_view*) widget;
RT_ASSERT(widget != RT_NULL);
switch (event->type)
{
case RTGUI_EVENT_PAINT:
{
struct rtgui_dc* dc;
struct rtgui_rect rect;
dc = rtgui_dc_begin_drawing(widget);
if (dc == RT_NULL) return RT_FALSE;
rtgui_widget_get_rect(widget, &rect);
/* fill view with background */
rtgui_dc_fill_rect(dc, &rect);
/* paint on each child */
rtgui_container_dispatch_event(RTGUI_CONTAINER(view), event);
rtgui_dc_end_drawing(dc);
}
break;
default:
return rtgui_container_event_handler(widget, event);
}
return RT_FALSE;
}
rtgui_view_t* rtgui_view_create(const char* title)
{
struct rtgui_view* view;
/* allocate view */
view = (struct rtgui_view*) rtgui_widget_create (RTGUI_VIEW_TYPE);
if (view != RT_NULL)
{
if (title != RT_NULL)
view->title = rt_strdup(title);
}
return view;
}
void rtgui_view_destroy(rtgui_view_t* view)
{
if (view->modal_show == RT_TRUE)
rtgui_view_end_modal(view, RTGUI_MODAL_CANCEL);
else
{
rtgui_view_hide(view);
rtgui_widget_destroy(RTGUI_WIDGET(view));
}
}
#ifndef RTGUI_USING_SMALL_SIZE
void rtgui_view_set_box(rtgui_view_t* view, rtgui_box_t* box)
{
if (view == RT_NULL ||
box == RT_NULL) return;
rtgui_container_add_child(RTGUI_CONTAINER(view), RTGUI_WIDGET(box));
rtgui_widget_set_rect(RTGUI_WIDGET(box), &(RTGUI_WIDGET(view)->extent));
}
#endif
rtgui_modal_code_t rtgui_view_show(rtgui_view_t* view, rt_bool_t is_modal)
{
rtgui_workbench_t* workbench;
/* parameter check */
if (view == RT_NULL) return RTGUI_MODAL_CANCEL;
if (RTGUI_WIDGET(view)->parent == RT_NULL)
{
RTGUI_WIDGET_UNHIDE(RTGUI_WIDGET(view));
return RTGUI_MODAL_CANCEL;
}
workbench = RTGUI_WORKBENCH(RTGUI_WIDGET(view)->parent);
rtgui_workbench_show_view(workbench, view);
if (RTGUI_CONTAINER(view)->focused != RT_NULL)
rtgui_widget_focus(RTGUI_CONTAINER(view)->focused);
else
{
if (RTGUI_WIDGET_IS_FOCUSABLE(RTGUI_WIDGET(view)))
rtgui_widget_focus(RTGUI_WIDGET(view));
}
view->modal_show = is_modal;
if (is_modal == RT_TRUE)
{
/* set modal mode */
workbench->flag |= RTGUI_WORKBENCH_FLAG_MODAL_MODE;
workbench->modal_widget = RTGUI_WIDGET(view);
/* perform workbench event loop */
rtgui_workbench_event_loop(workbench);
workbench->modal_widget = RT_NULL;
return workbench->modal_code;
}
/* no modal mode, always return modal_ok */
return RTGUI_MODAL_OK;
}
void rtgui_view_end_modal(rtgui_view_t* view, rtgui_modal_code_t modal_code)
{
rtgui_workbench_t* workbench;
/* parameter check */
if ((view == RT_NULL) || (RTGUI_WIDGET(view)->parent == RT_NULL))return ;
workbench = RTGUI_WORKBENCH(RTGUI_WIDGET(view)->parent);
workbench->modal_code = modal_code;
workbench->flag &= ~RTGUI_WORKBENCH_FLAG_MODAL_MODE;
/* remove modal mode */
view->modal_show = RT_FALSE;
}
void rtgui_view_hide(rtgui_view_t* view)
{
if (view == RT_NULL) return;
if (RTGUI_WIDGET(view)->parent == RT_NULL)
{
RTGUI_WIDGET_HIDE(RTGUI_WIDGET(view));
return;
}
rtgui_workbench_hide_view((rtgui_workbench_t*)(RTGUI_WIDGET(view)->parent), view);
}
char* rtgui_view_get_title(rtgui_view_t* view)
{
RT_ASSERT(view != RT_NULL);
return view->title;
}
void rtgui_view_set_title(rtgui_view_t* view, const char *title)
{
RT_ASSERT(view != RT_NULL);
if (view->title != RT_NULL)
{
rtgui_free(view->title);
if (title != RT_NULL) view->title = rt_strdup(title);
else view->title = RT_NULL;
}
}
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