rtt-f030/components/rtgui/widgets/about_view.c

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/*
* File : about_view.c
* This file is part of RTGUI in RT-Thread RTOS
* COPYRIGHT (C) 2010, 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
* 2010-01-06 Bernard first version
*/
#include <rtgui/rtgui_theme.h>
#include <rtgui/widgets/about_view.h>
static void _rtgui_about_view_constructor(struct rtgui_about_view *view)
{
/* default rect */
struct rtgui_rect rect = {0, 0, 200, 200};
/* set default widget rect and set event handler */
rtgui_widget_set_event_handler(RTGUI_WIDGET(view),rtgui_about_view_event_handler);
rtgui_widget_set_rect(RTGUI_WIDGET(view), &rect);
RTGUI_WIDGET(view)->flag |= RTGUI_WIDGET_FLAG_FOCUSABLE;
view->logo = RT_NULL;
view->description = RT_NULL;
RTGUI_WIDGET_TEXTALIGN(RTGUI_WIDGET(view)) = RTGUI_ALIGN_CENTER_VERTICAL;
}
rtgui_type_t *rtgui_about_view_type_get(void)
{
static rtgui_type_t *list_view_type = RT_NULL;
if (!list_view_type)
{
list_view_type = rtgui_type_create("aboutview", RTGUI_VIEW_TYPE,
sizeof(rtgui_about_view_t), RTGUI_CONSTRUCTOR(_rtgui_about_view_constructor), RT_NULL);
}
return list_view_type;
}
void rtgui_about_view_ondraw(struct rtgui_about_view* view)
{
struct rtgui_rect rect;
struct rtgui_dc* dc;
dc = rtgui_dc_begin_drawing(RTGUI_WIDGET(view));
if (dc == RT_NULL) return;
rtgui_widget_get_rect(RTGUI_WIDGET(view), &rect);
rtgui_dc_fill_rect(dc, &rect);
if (view->logo != RT_NULL)
rtgui_image_blit(view->logo, dc, &rect);
rect.y1 += view->logo->h + 5;
if (view->description != RT_NULL)
rtgui_dc_draw_text(dc, view->description, &rect);
rect.y1 += rtgui_dc_get_gc(dc)->font->height;
rtgui_dc_draw_hline(dc, rect.x1 + 3, rect.x2 - 3, rect.y1);
RTGUI_DC_FC(dc) = white;
rtgui_dc_draw_hline(dc, rect.x1 + 4, rect.x2 - 2, rect.y1 + 1);
rtgui_dc_end_drawing(dc);
}
rt_bool_t rtgui_about_view_event_handler(struct rtgui_widget* widget, struct rtgui_event* event)
{
struct rtgui_about_view* view = RT_NULL;
view = RTGUI_ABOUT_VIEW(widget);
switch (event->type)
{
case RTGUI_EVENT_PAINT:
rtgui_about_view_ondraw(view);
return RT_FALSE;
}
/* use view event handler */
return rtgui_view_event_handler(widget, event);
}
rtgui_about_view_t* rtgui_about_view_create(rtgui_image_t *logo, const char* description)
{
struct rtgui_about_view* view = RT_NULL;
view = (struct rtgui_about_view*) rtgui_widget_create(RTGUI_ABOUT_VIEW_TYPE);
if (view != RT_NULL)
{
view->logo = logo;
view->description = description;
}
return view;
}
void rtgui_about_view_destroy(rtgui_about_view_t* view)
{
/* destroy view */
rtgui_widget_destroy(RTGUI_WIDGET(view));
}