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rt-thread-official/components/rtgui/widgets/menu.c

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#include <rtgui/dc.h>
#include <rtgui/widgets/menu.h>
#include <rtgui/rtgui_theme.h>
static rt_bool_t rtgui_menu_on_deactivate(struct rtgui_object* object, rtgui_event_t* event);
const static rt_uint8_t right_arrow[] = {0x80, 0xc0, 0xe0, 0xf0, 0xe0, 0xc0, 0x80};
static void _rtgui_menu_constructor(rtgui_menu_t *menu)
{
/* set window style */
RTGUI_WIN(menu)->style = RTGUI_WIN_STYLE_NO_TITLE;
/* set deactivate handler */
rtgui_win_set_ondeactivate(RTGUI_WIN(menu), rtgui_menu_on_deactivate);
/* set proper of control */
menu->parent_menu = RT_NULL;
menu->sub_menu = RT_NULL;
menu->items = RT_NULL;
menu->items_count = 0;
menu->items_list = RT_NULL;
menu->on_menupop = RT_NULL;
menu->on_menuhide = RT_NULL;
}
static void _rtgui_menu_destructor(rtgui_menu_t* menu)
{
if (menu->sub_menu != RT_NULL)
{
rtgui_menu_destroy(menu->sub_menu);
menu->sub_menu = RT_NULL;
}
rtgui_listctrl_destroy(menu->items_list);
menu->items_list = RT_NULL;
}
static rt_bool_t _rtgui_menu_onitem(struct rtgui_object* object, struct rtgui_event* event)
{
struct rtgui_menu* menu;
RTGUI_WIDGET_EVENT_HANDLER_PREPARE
/* get menu */
menu = RTGUI_MENU(rtgui_widget_get_toplevel(widget));
if (menu->items[menu->items_list->current_item].type == RTGUI_ITEM_SUBMENU)
{
const rtgui_menu_item_t* items;
rt_uint16_t count;
rtgui_rect_t item_rect;
items = (rtgui_menu_item_t*)menu->items[menu->items_list->current_item].submenu;
count = menu->items[menu->items_list->current_item].submenu_count;
if (menu->sub_menu != RT_NULL)
{
if (menu->sub_menu->items == items)
{
if (!RTGUI_WIDGET_IS_HIDE(RTGUI_WIDGET(menu->sub_menu)))
{
/* hide this sub menu */
rtgui_win_hiden(RTGUI_WIN(menu->sub_menu));
return RT_FALSE;
}
/* show this sub menu */
rtgui_listctrl_get_item_rect(menu->items_list, menu->items_list->current_item, &item_rect);
rtgui_menu_pop(menu->sub_menu, item_rect.x2, item_rect.y1);
return RT_FALSE;
}
/* delete sub menu */
rtgui_menu_destroy(menu->sub_menu);
menu->sub_menu = RT_NULL;
}
/* create sub menu */
menu->sub_menu = rtgui_menu_create("submenu", menu, items, count);
rtgui_listctrl_get_item_rect(menu->items_list, menu->items_list->current_item, &item_rect);
rtgui_menu_pop(menu->sub_menu, item_rect.x2 + 5, item_rect.y1);
}
else /* other menu item */
{
/* invoke action */
if (menu->items[menu->items_list->current_item].on_menuaction != RT_NULL)
menu->items[menu->items_list->current_item].on_menuaction(RTGUI_WIDGET(menu), RT_NULL);
/* hide sub-menu */
if (menu->sub_menu != RT_NULL)
{
rtgui_menu_hiden(menu->sub_menu);
}
rtgui_menu_hiden(menu);
}
return RT_FALSE;
}
static void _rtgui_menu_item_ondraw(struct rtgui_listctrl *list,
struct rtgui_dc* dc,
rtgui_rect_t* rect,
rt_uint16_t index)
{
rtgui_rect_t item_rect;
struct rtgui_menu_item* item;
item_rect = *rect;
item_rect.x1 += 5;
/* re-fill item */
if (list->current_item == index)
{
rtgui_color_t bc;
bc = RTGUI_WIDGET_BACKGROUND(RTGUI_WIDGET(list));
RTGUI_WIDGET_BACKGROUND(RTGUI_WIDGET(list)) = blue;
rtgui_dc_fill_rect(dc, rect);
RTGUI_WIDGET_BACKGROUND(RTGUI_WIDGET(list)) = bc;
}
/* get menu item */
item = (rtgui_menu_item_t*)list->items;
item = &item[index];
if (item->type == RTGUI_ITEM_SUBMENU)
{
rtgui_rect_t r = {0, 0, 8, 8};
rtgui_dc_draw_text(dc, item->label, &item_rect);
item_rect.x1 = item_rect.x2 - 16; item_rect.x2 -= 8;
rtgui_rect_moveto_align(&item_rect, &r, RTGUI_ALIGN_CENTER_HORIZONTAL | RTGUI_ALIGN_CENTER_VERTICAL);
rtgui_dc_draw_byte(dc, r.x1, r.y1, 8, right_arrow);
}
else if (item->type == RTGUI_ITEM_SEPARATOR)
{
rtgui_dc_draw_horizontal_line(dc, item_rect.x1, item_rect.x2, (item_rect.y2 + item_rect.y1)/2);
}
else if (item->type == RTGUI_ITEM_CHECK)
{
/* not support right now */
}
else
{
/* normal menu item */
rtgui_dc_draw_text(dc, item->label, &item_rect);
if (item->image != RT_NULL)
rtgui_image_blit(item->image, dc, &item_rect);
}
}
DEFINE_CLASS_TYPE(menu, "menu",
RTGUI_WIN_TYPE,
_rtgui_menu_constructor,
_rtgui_menu_destructor,
sizeof(struct rtgui_menu));
static rt_bool_t rtgui_menu_on_deactivate(struct rtgui_object *object, rtgui_event_t* event)
{
rtgui_menu_t* menu;
RTGUI_WIDGET_EVENT_HANDLER_PREPARE
menu = RTGUI_MENU(object);
if (menu->parent_menu != RT_NULL)
{
/* whether click on parent menu */
if (rtgui_win_is_activated(RTGUI_WIN(menu->parent_menu)) == RT_TRUE &&
menu->parent_menu->items[menu->parent_menu->items_list->current_item].submenu
== (struct rtgui_menu_item_t *)menu->items)
return RT_TRUE;
}
/* submenu is activate */
if (menu->items[menu->items_list->current_item].type == RTGUI_ITEM_SUBMENU)
{
/* if sub menu activated, not hide menu. But we cannot use the
* activated flag as criteria since the old window is deactivated
* before the new window got activated. But the window will be shown in
* this context, so use 'is not hide'. */
if (menu->sub_menu != RT_NULL &&
!RTGUI_WIDGET_IS_HIDE(RTGUI_WIDGET(menu->sub_menu)))
return RT_TRUE;
}
rtgui_win_hiden(RTGUI_WIN(menu));
if (menu->on_menuhide != RT_NULL)
{
menu->on_menuhide(RTGUI_OBJECT(menu), RT_NULL);
}
/* un-select item */
menu->items_list->current_item = -1;
/* if it's a submenu, try to hide parent menu */
if (menu->parent_menu != RT_NULL &&
rtgui_win_is_activated(RTGUI_WIN(menu->parent_menu)) == RT_FALSE)
{
rtgui_menu_on_deactivate(RTGUI_OBJECT(menu->parent_menu), event);
}
return RT_TRUE;
}
struct rtgui_menu* rtgui_menu_create(const char* title, struct rtgui_menu* parent_menu,
const struct rtgui_menu_item* items, rt_uint16_t count)
{
rtgui_rect_t rect = {0, 0, 100, 100};
struct rtgui_menu* menu;
menu = (struct rtgui_menu*) rtgui_widget_create ( RTGUI_MENU_TYPE );
if (menu != RT_NULL)
{
rtgui_win_set_title(RTGUI_WIN(menu), title);
menu->parent_menu = parent_menu;
menu->items = items;
menu->items_count = count;
rtgui_widget_set_rect(RTGUI_WIDGET(menu), &rect);
rtgui_rect_inflate(&rect, -1);
/* create menu item list */
menu->items_list = rtgui_listctrl_create((rt_uint32_t)items, count, &rect, _rtgui_menu_item_ondraw);
RTGUI_WIDGET_BACKGROUND(RTGUI_WIDGET(menu->items_list)) = rtgui_theme_default_bc();
rtgui_container_add_child(RTGUI_CONTAINER(menu), RTGUI_WIDGET(menu->items_list));
rtgui_listctrl_set_onitem(menu->items_list, _rtgui_menu_onitem);
}
return menu;
}
void rtgui_menu_destroy(struct rtgui_menu* menu)
{
rtgui_widget_destroy (RTGUI_WIDGET(menu));
}
void rtgui_menu_set_onmenupop(struct rtgui_menu* menu, rtgui_event_handler_ptr handler)
{
if (menu == RT_NULL) return;
menu->on_menupop = handler;
}
void rtgui_menu_set_onmenuhide(struct rtgui_menu* menu, rtgui_event_handler_ptr handler)
{
if (menu == RT_NULL) return;
menu->on_menuhide = handler;
}
void rtgui_menu_pop(struct rtgui_menu* menu, int x, int y)
{
rtgui_rect_t rect;
struct rtgui_event_resize eresize;
if (menu == RT_NULL)
return;
/* set window extent */
rect.x1 = 0; rect.y1 = 0;
rect.x2 = 100; rect.y2 = menu->items_count * (rtgui_theme_get_selected_height() + 2) + 5;
rtgui_rect_moveto(&rect, x, y);
rtgui_win_set_rect(RTGUI_WIN(menu), &rect);
rtgui_rect_inflate(&rect, -1);
rtgui_widget_set_rect(RTGUI_WIDGET(menu->items_list), &rect);
eresize.parent.type = RTGUI_EVENT_RESIZE;
eresize.x = rect.x1; eresize.y = rect.y1;
eresize.h = rect.y2 - rect.y1; eresize.w = rect.x2 - rect.x1;
rtgui_listctrl_event_handler(RTGUI_OBJECT(menu->items_list), &(eresize.parent));
/* on menu pop handler */
if (menu->on_menupop != RT_NULL)
{
menu->on_menupop(RTGUI_OBJECT(menu), RT_NULL);
}
/* show menu window */
rtgui_win_show(RTGUI_WIN(menu), RT_FALSE);
}
void rtgui_menu_hiden(struct rtgui_menu* menu)
{
rtgui_win_hiden(RTGUI_WIN(menu));
/* un-select item */
menu->items_list->current_item = -1;
if (menu->parent_menu != RT_NULL)
rtgui_menu_hiden(menu->parent_menu);
}
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