player/Project_App_MusicPlayer/App_Src/win/mywin_user_picmenu.c

#include "mywin_inc.h"
#include "png.h"
#include <zlib.h>
#include "mywin_user_picmenu.h"


 
void PICMENU_Delete(WIN_PicMenuStruct *menu);
 
 
 

WIN_PicMenuStruct *WIN_CreatPicMenu (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))PICMENU_DefaultMsgLoop;  
	} 
	
	WIN_PicMenuStruct *ret=mymalloc (sizeof ( WIN_PicMenuStruct));
	//调用父类的构造函数
	if (ret)
	{
		mymemset (ret,0,sizeof ( WIN_PicMenuStruct));
		if (0==WIN_CreatTouchEx((WIN_TouchWinStruct *)ret,base,msgLoop,x,y,x_size,y_size))
		{
			//创建失败
			myfree (ret);
			ret=0;
		}
		else
		{
			((WIN_WindowStruct *)ret)->deleteWindow=(void (*)(struct _WIN_WindowStruct *win))PICMENU_Delete;
			((WIN_WindowStruct *)ret)->winType="WIN_PicMenuStruct";
			((WIN_WindowStruct *)ret)->color=0xaabbcc;
			
			//构造一个
			ret->y_step=80;
			ret->timer_anim=WIN_CreatTimer((WIN_WindowStruct *)ret,20);
			
		}
	}
	
	
	return ret;
}




void PICMENU_Delete(WIN_PicMenuStruct *menu)
{
	
	//释放条目申请的内存
	for(int i=0;i<menu->allItemNum;i++)
	{
		PICMENU_ItemStruct *item=&menu->item[i];
		if(item->img.data) myfree(item->img.data);
		if(item->img_min.data) myfree(item->img_min.data);
		GIF_DecodeStructFree (&item->img_gif);
	}
	
	//调用父类的销毁函数
	WIN_DeleteWindow ( (WIN_WindowStruct *)menu);
}






//解码png图片，成功返回1，失败返回0
static int decode_png(WIN_PicStruct *pic,char *name)
{
	int png_err=0;

	png_image image; /* The control structure used by libpng */

	/* Initialize the 'png_image' structure. */
	memset(&image, 0, (sizeof image));
	image.version = PNG_IMAGE_VERSION;

		/* The first argument is the file to read: */
	if (png_image_begin_read_from_file(&image, name) != 0)
	{
		image.format = PNG_FORMAT_BGRA;
		pic->data = mymalloc(PNG_IMAGE_SIZE(image));
		pic->format=PIC_FORMAT_ARGB8888;
		pic->xsize=image.width;
		pic->ysize=image.height;
		if (
			png_err=png_image_finish_read(&image, NULL/*background*/, pic->data,
					0/*row_stride*/, NULL/*colormap*/),png_err != 0)
		{
			return 1;
		}
		else
		{
			myfree(pic->data);
			return 0;
		}
	}
	return 0;

}


//图像缩放
static int pic_zoom (WIN_PicStruct *dst,WIN_PicStruct *src)
{
	if(src==0||dst==0) return 0;
	if(src->xsize==0||src->ysize==0||dst->xsize==0||dst->ysize==0) return 0;
	if(src->data==0||dst->data==0) return 0;
	if(src->format!=PIC_FORMAT_ARGB8888||dst->format!=PIC_FORMAT_ARGB8888) return 0;
	
	u32 *src_dat=(u32 *)src->data;
	u32 *dst_dat=(u32 *)dst->data;
	for (int y=0;y<dst->ysize;y++)
	{
		for (int x=0;x<dst->xsize;x++)
		{
			int src_x=(x*src->xsize/dst->xsize);
			int src_y=(y*src->ysize/dst->ysize);
			dst_dat[y*dst->xsize+x]=src_dat[src_y*src->xsize+src_x];
		}
	}
	return 1;
}




//设置条目
void PICMENU_AddItem (WIN_PicMenuStruct *menu,char *img_name,char *gif_name,char *txt,WIN_TouchWinStruct *(*creat)(WIN_TouchWinStruct *))
{
	if(menu->allItemNum<MENU_ITEM_MAXNUM)
	{
		if(decode_png(&menu->item[menu->allItemNum].img,img_name))
		{
			WIN_PicStruct *src=&menu->item[menu->allItemNum].img;
			WIN_PicStruct *dst=&menu->item[menu->allItemNum].img_min;
			dst->format=PIC_FORMAT_ARGB8888;
			dst->xsize=src->xsize*3/4;
			dst->ysize=src->ysize*3/4;
			dst->data=mymalloc(dst->xsize*dst->ysize*4);
			pic_zoom(dst,src);
		}
		
		GIF_Decode(&menu->item[menu->allItemNum].img_gif,(u8*)gif_name);
		
		mymemcpy(&menu->item[menu->allItemNum].txt,txt,strlen(txt)+1);
		
		if(creat) menu->item[menu->allItemNum].creat=creat;
		
		menu->allItemNum++;
	}
	
}



//根据条目偏移找到对应条目
PICMENU_ItemStruct *PICMENU_GetItemByOffset (WIN_PicMenuStruct *menu,int offset)
{
	while(menu->index+offset<0) offset+=menu->allItemNum;
	while(menu->index+offset>=menu->allItemNum) offset-=menu->allItemNum;
	
	if((menu->index+offset>=0)&&(menu->index+offset<menu->allItemNum))
		return &menu->item[menu->index+offset];
	else
		return 0;
}






//根据偏移显示条目
void PICMENU_DrawItem(WIN_PicMenuStruct *menu,int offset,int y)
{
	PICMENU_ItemStruct *item=PICMENU_GetItemByOffset(menu,offset);
	int x=((WIN_WindowStruct *)menu)->x_size/4;
	if (item)
	{
		//显示小图标
		WIN_PicStruct *pic=&item->img_min;
		if (offset==0)
		{
			pic=&item->img;
		}
		WIN_FillRectAlpha(x-pic->xsize/2,y-pic->ysize/2,pic->xsize,pic->ysize,pic->data,0,0,pic->xsize,pic->ysize);
		
		if(offset==0)
		{
			//显示动画大图
			
			x=((WIN_WindowStruct *)menu)->x_size*3/4;
			GIF_DecodeStruct *gif=&item->img_gif;
			WIN_PicStruct gif_pic={0};
			gif_pic.data=gif->frame[item->frameNow];
			gif_pic.xsize=gif->x_size;
			gif_pic.ysize=gif->y_size;
			pic=&gif_pic;
			WIN_FillRect(x-pic->xsize/2,y-pic->ysize/2,pic->xsize,pic->ysize,pic->data,0,0,pic->xsize,pic->ysize);
			
			//显示字符
			WIN_SetLcdColor(((WIN_WindowStruct *)menu)->color);
			WIN_DrawTxtHCenterAt(item->txt,x,y+pic->ysize/2+6);
			
		}
		
		
		
	}
}




void PICMENU_Paint(WIN_PicMenuStruct *menu)
{
	
	int x=0;
	int y=0;
	int x_size=((WIN_WindowStruct *)menu)->x_size;
	int y_size=((WIN_WindowStruct *)menu)->y_size;
	
	WIN_PaintBackGround ((WIN_WindowStruct *)menu);
	
	int draw_item_num=2;
	for (;draw_item_num*menu->y_step<y_size;draw_item_num+=2){}
	
	for (int i=draw_item_num;i>=0;i--)
	{
		//调整顺序，边上的先显示，中间的后显示
		if(i!=0)
		{
			PICMENU_DrawItem(menu,i,menu->y_step*i+y_size/2+menu->move_yoff);
			PICMENU_DrawItem(menu,-i,menu->y_step*(-i)+y_size/2+menu->move_yoff);
		}
		else
		{
			PICMENU_DrawItem(menu,i,menu->y_step*i+y_size/2+menu->move_yoff);
		}
	}
	
	
	
}



#define PICMENU_INDEX_ADD() {if (menu->index<menu->allItemNum-1) menu->index++;\
																	else menu->index=0;PICMENU_SetChildEnter(menu);}
#define PICMENU_INDEX_SUB() {if (menu->index>0) menu->index--;\
																	else menu->index=menu->allItemNum-1;PICMENU_SetChildEnter(menu);}




//设置滑动进入的子窗口																	
int PICMENU_SetChildEnter(WIN_PicMenuStruct *menu)
{
	WIN_TouchWinStruct *touch=(WIN_TouchWinStruct *)menu;
	WIN_WindowStruct *win=(WIN_WindowStruct *)menu;
	
	//有个问题，如果创建函数没有界面这个滑动操作就会出bug，暂时屏蔽
//	TOUCHWIN_ClearChild(touch);
//	TOUCHWIN_AddChild(touch,TOUCH_CON_LEFT_PAR(win->x_size,win->y_size,menu->item[menu->index].creat));
	return 1;
}	
																	
																	
																	


//默认消息处理函数
void PICMENU_DefaultMsgLoop (WIN_PicMenuStruct *menu,WIN_MsgStruct *msg)
{
	WIN_MoveStruct *m=0;
	WIN_KeyStruct *k=0;
	switch (msg->msg)
	{	
		case WIN_MSG_PAINT:
			PICMENU_Paint(menu);
		break;
		case WIN_MSG_TIMER:
		{
			if(msg->data.v==menu->timer_anim)
			{
				WIN_WindowStruct *win=(WIN_WindowStruct *)menu;
				PICMENU_ItemStruct *item=&menu->item[menu->index];
				WIN_SetTimerCycle (menu->timer_anim,item->img_gif.delay[item->frameNow]);
				item->frameNow++; if (item->frameNow>item->img_gif.frameNumber-1) item->frameNow=0;
				WIN_SetInvalidRectWhenTop(win,win->x_size/2,0,win->x_size/2,win->y_size);
			}
		}
		break;
		case WIN_MSG_KEY:
			k=msg->data.p;
			if (k->shortPress& KEY_VALUE_DOWN)
			{
				PICMENU_INDEX_ADD();
				menu->move_yoff=0;
				WIN_SetInvalid((WIN_WindowStruct *)menu);
			}
			else if (k->shortPress&KEY_VALUE_UP)
			{
				PICMENU_INDEX_SUB();
				menu->move_yoff=0;
				WIN_SetInvalid((WIN_WindowStruct *)menu);
			}
		break;
		case WIN_MSG_MOVE:
			m=msg->data.p;
			switch (m->moveType)
			{
				case MOVE_DATA_SHORT:
					if(m->x_move>((WIN_WindowStruct *)menu)->x_size/2)
					{
						//短按打开窗口
						PICMENU_ItemStruct *item=&menu->item[menu->index];
						WIN_TouchWinStruct *touch=(WIN_TouchWinStruct *)menu;
						if(item->creat) item->creat(touch);
					}
					break;
				case MOVE_DATA_TOUCHIN:
					if( m->x_move<((WIN_WindowStruct *)menu)->x_size/2)
					{
						menu->move_start=1;
					}
					else
					{
						menu->move_start=0;
					}
					break;
				case MOVE_DATA_MOVED:
					if(menu->move_start)
					{
						menu->move_yoff+=m->y_move;
						if (menu->move_yoff>menu->y_step/2)
						{
							menu->move_yoff-=menu->y_step;
							PICMENU_INDEX_SUB();
						}
						else if (menu->move_yoff<=-menu->y_step/2)
						{
							menu->move_yoff+=menu->y_step;
							PICMENU_INDEX_ADD();
						}
						
					}
					
					//touch窗口的惯性滑动以x_move,y_move都为0结尾
					if(m->x_move==0&&m->y_move==0)
					{
						menu->move_yoff=0;
					}
				
					WIN_SetInvalid ((WIN_WindowStruct *)menu);
					break;
				case MOVE_DATA_TOUCHOUT:
				case MOVE_DATA_MOVEOUT:
					menu->move_yoff=0;
					WIN_SetInvalid ((WIN_WindowStruct *)menu);
					break;
				default:
					break;
			}
			break;
		default:
			WIN_DefaultMsgLoop((WIN_WindowStruct *)menu,msg);
		break;
	}
	
}