259 lines
7.1 KiB
C
259 lines
7.1 KiB
C
/*
|
|
* File : list_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/list_view.h>
|
|
|
|
#define LIST_MARGIN 5
|
|
|
|
static void _rtgui_list_view_constructor(struct rtgui_list_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_list_view_event_handler);
|
|
rtgui_widget_set_rect(RTGUI_WIDGET(view), &rect);
|
|
|
|
RTGUI_WIDGET(view)->flag |= RTGUI_WIDGET_FLAG_FOCUSABLE;
|
|
|
|
view->current_item = 0;
|
|
view->items_count = 0;
|
|
view->page_items = 0;
|
|
|
|
RTGUI_WIDGET_BACKGROUND(RTGUI_WIDGET(view)) = white;
|
|
RTGUI_WIDGET_TEXTALIGN(RTGUI_WIDGET(view)) = RTGUI_ALIGN_CENTER_VERTICAL;
|
|
}
|
|
|
|
rtgui_type_t *rtgui_list_view_type_get(void)
|
|
{
|
|
static rtgui_type_t *list_view_type = RT_NULL;
|
|
|
|
if (!list_view_type)
|
|
{
|
|
list_view_type = rtgui_type_create("listview", RTGUI_VIEW_TYPE,
|
|
sizeof(rtgui_list_view_t), RTGUI_CONSTRUCTOR(_rtgui_list_view_constructor), RT_NULL);
|
|
}
|
|
|
|
return list_view_type;
|
|
}
|
|
|
|
void rtgui_list_view_ondraw(struct rtgui_list_view* view)
|
|
{
|
|
struct rtgui_rect rect, item_rect;
|
|
struct rtgui_dc* dc;
|
|
rt_uint16_t page_index, index;
|
|
struct rtgui_list_item* item;
|
|
|
|
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);
|
|
|
|
/* get item base rect */
|
|
item_rect = rect;
|
|
item_rect.y1 += 2;
|
|
item_rect.y2 = item_rect.y1 + (2 + rtgui_theme_get_selected_height());
|
|
|
|
/* get current page */
|
|
page_index = (view->current_item / view->page_items) * view->page_items;
|
|
for (index = 0; index < view->page_items; index ++)
|
|
{
|
|
if (page_index + index >= view->items_count) break;
|
|
|
|
item = &(view->items[page_index + index]);
|
|
|
|
if (page_index + index == view->current_item)
|
|
{
|
|
rtgui_theme_draw_selected(dc, &item_rect);
|
|
}
|
|
item_rect.x1 += LIST_MARGIN;
|
|
|
|
if (item->image != RT_NULL)
|
|
{
|
|
rtgui_image_blit(item->image, dc, &item_rect);
|
|
item_rect.x1 += item->image->w + 2;
|
|
}
|
|
/* draw text */
|
|
rtgui_dc_draw_text(dc, item->name, &item_rect);
|
|
|
|
if (item->image != RT_NULL)
|
|
item_rect.x1 -= (item->image->w + 2);
|
|
item_rect.x1 -= LIST_MARGIN;
|
|
|
|
/* move to next item position */
|
|
item_rect.y1 += (rtgui_theme_get_selected_height() + 2);
|
|
item_rect.y2 += (rtgui_theme_get_selected_height() + 2);
|
|
}
|
|
rtgui_dc_end_drawing(dc);
|
|
}
|
|
|
|
void rtgui_list_view_update_current(struct rtgui_list_view* view, rt_uint16_t old_item)
|
|
{
|
|
struct rtgui_dc* dc;
|
|
struct rtgui_list_item* item;
|
|
rtgui_rect_t rect, item_rect;
|
|
|
|
if (old_item/view->page_items != view->current_item/view->page_items)
|
|
{
|
|
/* it's not a same page, update all */
|
|
rtgui_widget_update(RTGUI_WIDGET(view));
|
|
return;
|
|
}
|
|
|
|
dc = rtgui_dc_begin_drawing(RTGUI_WIDGET(view));
|
|
if (dc == RT_NULL) return;
|
|
|
|
rtgui_widget_get_rect(RTGUI_WIDGET(view), &rect);
|
|
|
|
item_rect = rect;
|
|
/* get old item's rect */
|
|
item_rect.y1 += 2;
|
|
item_rect.y1 += (old_item % view->page_items) * (2 + rtgui_theme_get_selected_height());
|
|
item_rect.y2 = item_rect.y1 + (2 + rtgui_theme_get_selected_height());
|
|
|
|
/* draw old item */
|
|
rtgui_dc_fill_rect(dc, &item_rect);
|
|
|
|
item_rect.x1 += LIST_MARGIN;
|
|
|
|
item = &(view->items[old_item]);
|
|
if (item->image != RT_NULL)
|
|
{
|
|
rtgui_image_blit(item->image, dc, &item_rect);
|
|
item_rect.x1 += item->image->w + 2;
|
|
}
|
|
rtgui_dc_draw_text(dc, item->name, &item_rect);
|
|
|
|
/* draw current item */
|
|
item_rect = rect;
|
|
/* get current item's rect */
|
|
item_rect.y1 += 2;
|
|
item_rect.y1 += (view->current_item % view->page_items) * (2 + rtgui_theme_get_selected_height());
|
|
item_rect.y2 = item_rect.y1 + (2 + rtgui_theme_get_selected_height());
|
|
|
|
/* draw current item */
|
|
rtgui_theme_draw_selected(dc, &item_rect);
|
|
|
|
item_rect.x1 += LIST_MARGIN;
|
|
|
|
item = &(view->items[view->current_item]);
|
|
if (item->image != RT_NULL)
|
|
{
|
|
rtgui_image_blit(item->image, dc, &item_rect);
|
|
item_rect.x1 += (item->image->w + 2);
|
|
}
|
|
rtgui_dc_draw_text(dc, item->name, &item_rect);
|
|
|
|
rtgui_dc_end_drawing(dc);
|
|
}
|
|
|
|
rt_bool_t rtgui_list_view_event_handler(struct rtgui_widget* widget, struct rtgui_event* event)
|
|
{
|
|
struct rtgui_list_view* view = RT_NULL;
|
|
|
|
view = RTGUI_LIST_VIEW(widget);
|
|
switch (event->type)
|
|
{
|
|
case RTGUI_EVENT_PAINT:
|
|
rtgui_list_view_ondraw(view);
|
|
return RT_FALSE;
|
|
|
|
case RTGUI_EVENT_RESIZE:
|
|
{
|
|
struct rtgui_event_resize* resize;
|
|
|
|
resize = (struct rtgui_event_resize*)event;
|
|
|
|
/* recalculate page items */
|
|
view->page_items = resize->h / (2 + rtgui_theme_get_selected_height());
|
|
}
|
|
break;
|
|
|
|
case RTGUI_EVENT_KBD:
|
|
{
|
|
struct rtgui_event_kbd* ekbd = (struct rtgui_event_kbd*)event;
|
|
if (ekbd->type == RTGUI_KEYDOWN)
|
|
{
|
|
rt_uint16_t old_item;
|
|
|
|
old_item = view->current_item;
|
|
switch (ekbd->key)
|
|
{
|
|
case RTGUIK_LEFT:
|
|
if (view->current_item - view->page_items >= 0)
|
|
view->current_item -= view->page_items;
|
|
rtgui_list_view_update_current(view, old_item);
|
|
return RT_FALSE;
|
|
|
|
case RTGUIK_UP:
|
|
if (view->current_item > 0)
|
|
view->current_item --;
|
|
rtgui_list_view_update_current(view, old_item);
|
|
return RT_FALSE;
|
|
|
|
case RTGUIK_RIGHT:
|
|
if (view->current_item + view->page_items < view->items_count - 1)
|
|
view->current_item += view->page_items;
|
|
rtgui_list_view_update_current(view, old_item);
|
|
return RT_FALSE;
|
|
|
|
case RTGUIK_DOWN:
|
|
if (view->current_item < view->items_count - 1)
|
|
view->current_item ++;
|
|
rtgui_list_view_update_current(view, old_item);
|
|
return RT_FALSE;
|
|
|
|
case RTGUIK_RETURN:
|
|
if (view->items[view->current_item].action != RT_NULL)
|
|
{
|
|
view->items[view->current_item].action(view->items[view->current_item].parameter);
|
|
}
|
|
return RT_FALSE;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return RT_FALSE;
|
|
}
|
|
|
|
/* use view event handler */
|
|
return rtgui_view_event_handler(widget, event);
|
|
}
|
|
|
|
rtgui_list_view_t* rtgui_list_view_create(struct rtgui_list_item* items, rt_uint16_t count, rtgui_rect_t *rect)
|
|
{
|
|
struct rtgui_list_view* view = RT_NULL;
|
|
|
|
view = (struct rtgui_list_view*) rtgui_widget_create(RTGUI_LIST_VIEW_TYPE);
|
|
if (view != RT_NULL)
|
|
{
|
|
view->items = items;
|
|
view->items_count = count;
|
|
|
|
view->page_items = rtgui_rect_height(*rect) / (2 + rtgui_theme_get_selected_height());
|
|
}
|
|
|
|
return view;
|
|
}
|
|
|
|
void rtgui_list_view_destroy(rtgui_list_view_t* view)
|
|
{
|
|
/* destroy view */
|
|
rtgui_widget_destroy(RTGUI_WIDGET(view));
|
|
}
|