#include "uiMenu.h"
#include "app.h"  //引入 getKeyValue
#include "board.h"//引入 MKEY_VALUE_ESC
#include "gui.h"  //引入 FONT_MODEENUM
#include "uiEntry.h"   //引入	 UI_STACKDEF

#define UI_MENU_KEY_ESC		MKEY_VALUE_ESC //返回按键
#define UI_MENU_KEY_UP 		MKEY_VALUE_UP
#define UI_MENU_KEY_DOWN 	MKEY_VALUE_DOWN
static unsigned short uiMenuGetKey(void){
	return getKeyValue();
}
static UI_STACKDEF *uiMenuGetStack(void){
	return getStackStruct();
}
static void uiMenuShowItem(SUT_MENU *p, unsigned char handle, FONT_MODEENUM fontMode){
	unsigned char y,hand;

	hand=handle%UI_MENU_ROW;
	y=UI_MENU_TOPY+hand*(12+UI_MENU_SPACE);
	guiClearArea(0, y-1,UI_MENU_BAR_LEN,18,guiGetBackColor());
	guiShowStr(0,y,p->item[handle],fontMode, REVERSED_NO, COLOR_BLACK, guiGetBackColor());
}
static void uiMenuShowBar(SUT_MENU *p, REV_ENUM rev, FONT_MODEENUM fontMode){
	unsigned char x,y,handle;
	char *str;
	short len;
	unsigned int color;
	
	x=0;
	handle=p->handle%UI_MENU_ROW;
	y=UI_MENU_TOPY+handle*(12+UI_MENU_SPACE);
	str=(char *)p->item[p->handle];
	len=guiGetStrXLen(str, fontMode);
	if(REVERSED_NO==rev) color=COLOR_STATUS_BAR;
	else color=guiGetBackColor();
	guiFillRect(x, y-2, x+UI_MENU_BAR_LEN, y+14, color);
	if(REVERSED_NO==rev) guiShowStr(x,y,str, fontMode, rev,guiGetBackColor(), COLOR_STATUS_BAR);
	else guiShowStr(x,y,str, fontMode, rev,guiGetBackColor(), COLOR_BLACK);
}
static void uiMenuShow(SUT_MENU *p, FONT_MODEENUM fontMode){
	unsigned char i,j;
	unsigned short x,y;

	j=p->page*UI_MENU_ROW;

	for(i=j;i<j+UI_MENU_ROW;i++){
		if(i>=p->itemnum){
			y=UI_MENU_TOPY+(i%UI_MENU_ROW)*(12+UI_MENU_SPACE);
			guiClearArea(0, y-1, UI_MENU_BAR_LEN, 12+UI_MENU_SPACE,guiGetBackColor());
		}else uiMenuShowItem(p,i, fontMode);
	}
	uiMenuShowBar(p,REVERSED_NO,fontMode);

	//show arrow
	x=UI_MENU_BAR_LEN+(GLCD_WIDTH-UI_MENU_BAR_LEN)/2-2;
	if(p->page>0) guiDrawArrow(GLCD_WIDTH-5, UI_MENU_TOPY, 8, ARROW_UP, COLOR_STATUS_BAR);
	else guiClearArea(x, UI_MENU_TOPY, 18,8+10,guiGetBackColor());

	y=UI_MENU_TOPY+UI_MENU_ROW*(12+UI_MENU_SPACE);
	if(p->page<(p->pagenum-1)) guiDrawArrow(GLCD_WIDTH-5, y-2,8, ARROW_DOWN, COLOR_STATUS_BAR);
	else guiClearArea(x,y-8-2,19,8,guiGetBackColor());
}

void uiMenuInit(SUT_MENU *p, const char **item, FONT_MODEENUM fontMode,bool status){
	unsigned char i,ch,index;
	UI_STACKDEF *uiPtr=uiMenuGetStack();
	p->item=item;
	i=0;
	for(;;){
		ch=p->item[i][0];
		if(ch==0) break;
		i++;
	}
	i--;
	p->itemnum = i+1;
	p->pagenum=i/UI_MENU_ROW;

	if(p->pagenum%UI_MENU_ROW) p->pagenum ++;
	if(UI_MENU_KEY_ESC==uiMenuGetKey() || uiPtr->ok_back){
		if(status==true){
			index=uiPullStack();
			if(index>9){
				p->page=2;
				p->handle=index;
			}else if(index>4){
				p->page=1;
				p->handle=index;
			}else{
				p->page=0;
				p->handle=index;
			}
			uiPtr->ok_back=0;
		}else{
			p->page=0;
			p->handle=0;
		}
	}else{
		p->page=0;
		p->handle=0;
	}
	uiMenuShow(p,fontMode);
}

unsigned short uiMenuResponse(SUT_MENU *p){
	unsigned char tmp;
	unsigned short key=uiMenuGetKey();

	switch(key){
		case UI_MENU_KEY_UP:
			uiMenuShowBar(p, REVERSED_YES, FONT_MODE_12X12);
			if(p->handle==0) p->handle=p->itemnum-1;
			else p->handle --;
			tmp=p->page;
			p->page=p->handle/UI_MENU_ROW;
			if(tmp != p->page) uiMenuShow(p, FONT_MODE_12X12);
			else uiMenuShowBar(p, REVERSED_NO, FONT_MODE_12X12);
			break;
		case UI_MENU_KEY_DOWN:
			uiMenuShowBar(p, REVERSED_YES, FONT_MODE_12X12);
			p->handle ++;
			if(p->handle>=p->itemnum) p->handle=0;
			tmp=p->page;
			p->page=p->handle/UI_MENU_ROW;
			if(tmp != p->page) uiMenuShow(p, FONT_MODE_12X12);
			else uiMenuShowBar(p, REVERSED_NO, FONT_MODE_12X12);
			break;
		default:
			break;
	}
	return key;
}