#include "mywin_inc.h"



//定义页面类型
#define WIN_TYPE_TYPE "WIN_PageStruct"




WIN_PageStruct *WIN_CreatPage (WIN_WindowStruct *base,
			void (*msgLoop)(struct _WIN_WindowStruct *win,WIN_MsgStruct *msg),
			int x,int y,int x_size,int y_size)
{ 
	//重设消息循环
	if (msgLoop==0)
	{
		msgLoop=(void (*)(struct _WIN_WindowStruct *win,WIN_MsgStruct *msg))PAGE_DefaultMsgLoop;  
	} 
	
	WIN_PageStruct *ret=mymalloc (sizeof ( WIN_PageStruct));
	//调用父类的构造函数
	if (ret)
	{
		mymemset (ret,0,sizeof ( WIN_PageStruct));
		if (0==WIN_CreatWindowExt((WIN_WindowStruct *)ret,base,msgLoop,x,y,x_size,y_size))
		{
			//创建失败
			myfree (ret);
			ret=0;
		}
		else
		{
			//重新设置析构函数
			((WIN_WindowStruct *)ret)->winType=WIN_TYPE_TYPE;
			((WIN_WindowStruct *)ret)->deleteWindow=(void (*)(struct _WIN_WindowStruct *win))WIN_DeletePage;
			
			//构造一个
			ret->title="列表";
			ret->itemHeight=WIN_GetFontHight();
			ret->titleHeight=WIN_GetFontHight();
			ret->itemIndent=80;
		}
	}
	
	
	return ret;
}



//销毁页面
void WIN_DeletePage (WIN_PageStruct *page)
{
	//回收堆内存
	if (page->item)
	{
		myfree(page->item);
	}
	
	//调用父类的销毁函数
	WIN_DeleteWindow ( (WIN_WindowStruct *)page);
}







//设置页面的背景图片
void PAGE_SetBackPic (WIN_PageStruct *page,WIN_PicStruct *pic)
{
	if (pic)
	{
		page->pic.data=pic->data;
		page->pic.xsize=pic->xsize;
		page->pic.ysize=pic->ysize;
	}
	else
	{
		page->pic.data=0;
		page->pic.xsize=0;
		page->pic.ysize=0;
	}
}



//设置列表框显示的条目
void PAGE_SetItem (WIN_PageStruct *page,const PAGE_ItemStruct *item,int itemNum)
{
	if (page->item)
	{
		myfree(page->item);
	}
	page->itemNum=itemNum;  
	page->item=mymalloc ((sizeof (PAGE_ItemStruct *)*page->itemNum));
	for (int i=0;i<page->itemNum;i++)
	{
		page->item[i] =(PAGE_ItemStruct *)&item[i];
	}
}

//设置标题高度
void PAGE_SetTitleHeight (WIN_PageStruct *page,int height)
{
	page->titleHeight=height;
}

//设置条目缩进
void PAGE_SetItemIndent (WIN_PageStruct *page,int indent)
{
	page->itemIndent=indent;
}


//设置条目高度
void PAGE_SetItemHeight (WIN_PageStruct *page,int height)
{
	page->itemHeight=height;
}


//索引增加
void PAGE_IndexAdd (WIN_PageStruct *page)
{
	page->index++;
	if (page->index>=page->itemNum)
	{
		page->index=0;
	}
}



//索引减少
void PAGE_IndexSub (WIN_PageStruct *page)
{
	if (page->index>0)
	{
		page->index--;
	}
	else
	{
		page->index=page->itemNum-1;
	}
}




//默认绘制函数
void PAGE_DefaultPaint (WIN_PageStruct *page)
{
	
	//使用双缓冲，防止闪烁
//	LCD_LayerBufferOn();
	 
	int x=0;
	int y=0;
	int x_size=((WIN_WindowStruct *)page)->x_size;
	int y_size=page->titleHeight;
	int one_page_num=0;		//每页显示的条目数
	int item_size=0;			//条目的实际高度
	int item_index_now;		//当前页面的索引
	int page_now;					//当前页
	WIN_SetLcdBkColor (0xf8f8f8);
	
	//如果有图片就显示图片
	if (page->pic.data)
	{
		WIN_FillRect (0,0,((WIN_WindowStruct *)page)->x_size,((WIN_WindowStruct *)page)->y_size,
			page->pic.data,0,0,page->pic.xsize,page->pic.ysize);
	}
	else
	{
		WIN_Clear();
	}
	
	//显示标题
	WIN_SetFontMode (WIN_DRAWMODE_ALONE);
	WIN_SetLcdColor (0);
	WIN_DrawTxtHCenterAt (page->title,x_size/2,y_size/2-WIN_GetFontHight()/2);
	
	//显示选中栏
	y+=y_size;
	y_size=((WIN_WindowStruct *)page)->y_size-y_size;
	one_page_num=y_size/page->itemHeight;
	item_size=y_size/one_page_num;
	item_index_now=page->index%one_page_num;
	WIN_SetLcdColor (0x8080a0);
	WIN_FillRectByColor (x,y+item_index_now*item_size,x_size,item_size);

	//显示条目
	page_now=page->index/one_page_num;
	for (int i=0;i<one_page_num;i++)
	{
		item_index_now=page_now*one_page_num+i;
		int img_xsize=0;
		int img_ysize=0;
		if (item_index_now<page->itemNum)
		{
			//显示图标
			if (page->item[item_index_now]->image)
			{
				WIN_GetImageSize (page->item[item_index_now]->image,&img_xsize,&img_ysize);
				if (img_xsize>page->itemIndent) img_xsize=page->itemIndent;
				if (img_ysize>item_size) img_ysize=item_size;
				WIN_DrawImag (x+page->itemIndent/2-img_xsize/2,item_size/2-img_ysize/2+y+i*item_size,
						img_xsize,img_ysize,page->item[item_index_now]->image);
			}
			//显示横线和字符
			WIN_SetLcdColor (0x808080);
			WIN_DrawHLine (x+page->itemIndent,y+i*item_size+item_size-2,x_size-1);
			WIN_SetLcdColor (0);
			WIN_DrawTxtAt (page->item[item_index_now]->str,
				x+page->itemIndent,y+i*item_size+item_size/2-WIN_GetFontHight()/2);
		}
	}
	
//	LCD_LayerBuffShow();
}
			
			
//默认消息处理函数
void PAGE_DefaultMsgLoop (WIN_PageStruct *page,WIN_MsgStruct *msg)
{
	WIN_MoveStruct *m=0;
	WIN_TouchStruct *t=0;
	WIN_KeyStruct *k=0;
	switch (msg->msg)
	{	
		case WIN_MSG_PAINT:
			PAGE_DefaultPaint(page);
		break;
		case WIN_MSG_KEY:
			k=msg->data.p;
			if (k->shortPress&KEY_VALUE_UP)//短按
			{
				PAGE_IndexSub (page);
			}
			else if (k->shortPress&KEY_VALUE_DOWN)
			{
				PAGE_IndexAdd (page);
			}
			else if (k->shortPress&KEY_VALUE_ENTER)
			{
				static char tips[20]={0};
				sprintf (tips,"内存使用：mem:%d,exmem:%d",mem_perused(),exmem_perused());
				MSGBOX_Tips((WIN_WindowStruct *)page,"警告",tips,"确定");
			}
			if (k->shortPress)
			{
				WIN_SetInvalidRect ((WIN_WindowStruct *)page,0,page->titleHeight,
					((WIN_WindowStruct *)page)->x_size,((WIN_WindowStruct *)page)->y_size-page->titleHeight);
			}
			break;
		case WIN_MSG_TOUCH:
			t=msg->data.p;
			if (page->touchIn)
			{
				page->touchIn=0;
				//模拟上键按下
				if (t->y[0]<((WIN_WindowStruct *)page)->y_size/2)
				{
					PAGE_IndexSub (page);
				}
				else
				{
					PAGE_IndexAdd (page);
				}
				WIN_SetInvalidRect ((WIN_WindowStruct *)page,0,page->titleHeight,
					((WIN_WindowStruct *)page)->x_size,((WIN_WindowStruct *)page)->y_size-page->titleHeight);
			}
		break;
		case WIN_MSG_MOVE:
			m=msg->data.p;
			switch (m->moveType)
			{
				case MOVE_DATA_TOUCHOUT:
					page->touchIn=1;//标识触屏已经按下
				break;
				default:
					WIN_DefaultMsgLoop((WIN_WindowStruct *)page,msg);
				break;
			}
		default:
			WIN_DefaultMsgLoop((WIN_WindowStruct *)page,msg);
		break;
	}
}