joolix.com

#!/bin/bash
#Copyright (c) 2009 xiooli (xioooli[at]yahoo.com.cn, http://joolix.com）
#Name wallther
#License: GPLv3
#Version 20090511
 
#此脚本需要安装 w3m 和 imagemagick
#城市代码，留空可自动检测（自动检测不一定精确）
#城市代码可在 http://weather.265.com 上查询，是个5位的数字
#受bones7456和wenbob的天气脚本启发。
 
#这儿是城市代码，须自己改，未赋值会自动查询。
Wid=56294
#天气图标的位置
Icondir="`dirname $0`/icons"
#欲用作背景的图片
BackPic="$Icondir/background.jpg"
#最终输出的图片位置
OutPic="/dev/shm/wallpapertmp.png"
#壁纸路径（此为 OutPic 的副本）
Wallpaper="/dev/shm/wallpaper.png"
#是否在图片上绘制文字天气信息，yes/no
DrawText="yes"
#文字的字体，若不是中文字体则中文可能无法正常显示
Font="/usr/share/fonts/winfonts/msyh.ttf"
#文字的大小
FontSize=24
#文字的颜色
TxtColor="white"
#文字信息绘制的位置
TxtPosX=700
TxtPosY=350
#隔多大距离绘制下一行（此距离包括本行的宽度）
TxtYIncr=35
#天气图标绘制的位置
PicGeometry="+650+80"
#壁纸更换的时间间隔（默认 30 分钟）
ChangeTime="30m"
 
WeatherCN=("晴" "多云" "阴" "雨" "雷阵雨" "雾" "雪" "雨夹雪")
WeatherEN=("sun" "suncloud" "cloud" "rain" "storm" "fog" "snow" "snowrain")
 
GET_WEATHER() {
	[ -z "${Wid}" ] && \
	if [ -f "/dev/shm/city" ] ;then
		Wid="$(cat /dev/shm/city)"
	else
		Wid="`wget -q -O - 'http://www.265.com/lookupcity'|awk -F "'" '{print $2}'`"
		echo ${Wid}>/dev/shm/city
	fi
	[ ! -z "${Wid}" ] && WeatherTxt="`w3m -dump "http://wap.weather.com.cn/wap/${Wid}/h24/"`"
}
 
GEN_DRAW_TEXT() {
	[ -z "${WeatherTxt}" ] && GET_WEATHER
	if [ -z "${WeatherTxt}" ]; then
		echo "未能获取天气 :("
	else
		echo "${WeatherTxt}"|sed -n "4p"|sed 's/\ .*$//'
		echo "${WeatherTxt}"|sed -n "5,9p"
	fi \
	|sed "s/^.*$/-draw \\\'text POSITION \\\"&\\\"\\\'/" \
	|while read line; do 
		echo "$line"|sed "s/POSITION/$TxtPosX,$TxtPosY/"
		((TxtPosY+=$TxtYIncr))
	done|tr "\n" " "
}
 
GEN_WEATHER_ICON() {
	local tmp weathercn index 
	[ -z "${WeatherTxt}" ] && GET_WEATHER
	[ -z "${WeatherTxt}" ] || tmp="`echo "${WeatherTxt}"|sed -n "5p"`"
	j=0; k=0
	for i in ${WeatherCN[@]}; do
		[ "${tmp//$i}" != "$tmp" ] && weathercn[$j]="$i" && index[$j]="$k" && ((j++))
		((k++))
	done
	[ "${#weathercn[@]}" -eq 0 ] && Weather[0]="unknown"
	[ "${#weathercn[@]}" -eq 1 ] && Weather[0]="${WeatherEN[${index[0]}]}"
	[ "${#weathercn[@]}" -eq 2 ] && \
	if [ "`echo $tmp|grep "${weathercn[0]}转"`" ];then
		Weather[0]="${WeatherEN[${index[0]}]}"
		Weather[1]="${WeatherEN[${index[1]}]}"
	else
		Weather[0]="${WeatherEN[${index[1]}]}"
		Weather[1]="${WeatherEN[${index[0]}]}"
	fi
	[ "${#weathercn[@]}" -eq 3 ] && \
	{
		Weather[0]="${WeatherEN[${index[0]}]}"
		Weather[1]="${WeatherEN[${index[2]}]}"
	}
	if [ "${#Weather[@]}" -ge 2 ]; then
	   convert +append "$Icondir/${Weather[0]}.png" "$Icondir/${Weather[1]}.png" /dev/shm/weathericon.png
	else
	   ln -sf "$Icondir/${Weather[0]}.png" /dev/shm/weathericon.png
	fi
}
 
GEN_WALLPAPWE() {
	GEN_WEATHER_ICON
	[ -f $BackPic ] || BackPic="$Icondir/background.jpg"
	if [ "$DrawText" = "yes" ]; then
		draw="convert -font \"$Font\" -fill $TxtColor -pointsize $FontSize `GEN_DRAW_TEXT` \"$BackPic\" \"/dev/shm/backpictmp.png\""
		eval "$draw"
		composite -geometry "$PicGeometry" /dev/shm/weathericon.png /dev/shm/backpictmp.png "$OutPic"
	else
		composite -geometry "$PicGeometry" /dev/shm/weathericon.png "$BackPic" "$OutPic"	
	fi
}
 
while :; do
	GET_WEATHER
	[ "${WeatherTxt}" != "$tmp" ] && GEN_WALLPAPWE && tmp="${WeatherTxt}"
	if [ -f "$OutPic" ];then
		mv "$OutPic" "$Wallpaper"
		gconftool-2 -s /desktop/gnome/background/picture_filename --type=string "$Wallpaper"
	fi
	sleep "$ChangeTime"
done