barrenderer3d.html

jfreechart1。0。2的api。

<FONT color="green">139</FONT>     * @author Serge V. Grachov<a name="line.139"></a>
<FONT color="green">140</FONT>     */<a name="line.140"></a>
<FONT color="green">141</FONT>    public class BarRenderer3D extends BarRenderer <a name="line.141"></a>
<FONT color="green">142</FONT>                               implements Effect3D, Cloneable, PublicCloneable, <a name="line.142"></a>
<FONT color="green">143</FONT>                                          Serializable {<a name="line.143"></a>
<FONT color="green">144</FONT>    <a name="line.144"></a>
<FONT color="green">145</FONT>        /** For serialization. */<a name="line.145"></a>
<FONT color="green">146</FONT>        private static final long serialVersionUID = 7686976503536003636L;<a name="line.146"></a>
<FONT color="green">147</FONT>        <a name="line.147"></a>
<FONT color="green">148</FONT>        /** The default x-offset for the 3D effect. */<a name="line.148"></a>
<FONT color="green">149</FONT>        public static final double DEFAULT_X_OFFSET = 12.0;<a name="line.149"></a>
<FONT color="green">150</FONT>    <a name="line.150"></a>
<FONT color="green">151</FONT>        /** The default y-offset for the 3D effect. */<a name="line.151"></a>
<FONT color="green">152</FONT>        public static final double DEFAULT_Y_OFFSET = 8.0;<a name="line.152"></a>
<FONT color="green">153</FONT>    <a name="line.153"></a>
<FONT color="green">154</FONT>        /** The default wall paint. */<a name="line.154"></a>
<FONT color="green">155</FONT>        public static final Paint DEFAULT_WALL_PAINT = new Color(0xDD, 0xDD, 0xDD);<a name="line.155"></a>
<FONT color="green">156</FONT>    <a name="line.156"></a>
<FONT color="green">157</FONT>        /** The size of x-offset for the 3D effect. */<a name="line.157"></a>
<FONT color="green">158</FONT>        private double xOffset;<a name="line.158"></a>
<FONT color="green">159</FONT>    <a name="line.159"></a>
<FONT color="green">160</FONT>        /** The size of y-offset for the 3D effect. */<a name="line.160"></a>
<FONT color="green">161</FONT>        private double yOffset;<a name="line.161"></a>
<FONT color="green">162</FONT>    <a name="line.162"></a>
<FONT color="green">163</FONT>        /** The paint used to shade the left and lower 3D wall. */<a name="line.163"></a>
<FONT color="green">164</FONT>        private transient Paint wallPaint;<a name="line.164"></a>
<FONT color="green">165</FONT>    <a name="line.165"></a>
<FONT color="green">166</FONT>        /**<a name="line.166"></a>
<FONT color="green">167</FONT>         * Default constructor, creates a renderer with a ten pixel '3D effect'.<a name="line.167"></a>
<FONT color="green">168</FONT>         */<a name="line.168"></a>
<FONT color="green">169</FONT>        public BarRenderer3D() {<a name="line.169"></a>
<FONT color="green">170</FONT>            this(DEFAULT_X_OFFSET, DEFAULT_Y_OFFSET);<a name="line.170"></a>
<FONT color="green">171</FONT>        }<a name="line.171"></a>
<FONT color="green">172</FONT>    <a name="line.172"></a>
<FONT color="green">173</FONT>        /**<a name="line.173"></a>
<FONT color="green">174</FONT>         * Constructs a new renderer with the specified '3D effect'.<a name="line.174"></a>
<FONT color="green">175</FONT>         *<a name="line.175"></a>
<FONT color="green">176</FONT>         * @param xOffset  the x-offset for the 3D effect.<a name="line.176"></a>
<FONT color="green">177</FONT>         * @param yOffset  the y-offset for the 3D effect.<a name="line.177"></a>
<FONT color="green">178</FONT>         */<a name="line.178"></a>
<FONT color="green">179</FONT>        public BarRenderer3D(double xOffset, double yOffset) {<a name="line.179"></a>
<FONT color="green">180</FONT>    <a name="line.180"></a>
<FONT color="green">181</FONT>            super();<a name="line.181"></a>
<FONT color="green">182</FONT>            this.xOffset = xOffset;<a name="line.182"></a>
<FONT color="green">183</FONT>            this.yOffset = yOffset;<a name="line.183"></a>
<FONT color="green">184</FONT>            this.wallPaint = DEFAULT_WALL_PAINT;<a name="line.184"></a>
<FONT color="green">185</FONT>            // set the default item label positions<a name="line.185"></a>
<FONT color="green">186</FONT>            ItemLabelPosition p1 = new ItemLabelPosition(<a name="line.186"></a>
<FONT color="green">187</FONT>                ItemLabelAnchor.INSIDE12, TextAnchor.TOP_CENTER<a name="line.187"></a>
<FONT color="green">188</FONT>            );<a name="line.188"></a>
<FONT color="green">189</FONT>            setPositiveItemLabelPosition(p1);<a name="line.189"></a>
<FONT color="green">190</FONT>            ItemLabelPosition p2 = new ItemLabelPosition(<a name="line.190"></a>
<FONT color="green">191</FONT>                ItemLabelAnchor.INSIDE12, TextAnchor.TOP_CENTER<a name="line.191"></a>
<FONT color="green">192</FONT>            );<a name="line.192"></a>
<FONT color="green">193</FONT>            setNegativeItemLabelPosition(p2);<a name="line.193"></a>
<FONT color="green">194</FONT>    <a name="line.194"></a>
<FONT color="green">195</FONT>        }<a name="line.195"></a>
<FONT color="green">196</FONT>    <a name="line.196"></a>
<FONT color="green">197</FONT>        /**<a name="line.197"></a>
<FONT color="green">198</FONT>         * Returns the x-offset for the 3D effect.<a name="line.198"></a>
<FONT color="green">199</FONT>         *<a name="line.199"></a>
<FONT color="green">200</FONT>         * @return The 3D effect.<a name="line.200"></a>
<FONT color="green">201</FONT>         */<a name="line.201"></a>
<FONT color="green">202</FONT>        public double getXOffset() {<a name="line.202"></a>
<FONT color="green">203</FONT>            return this.xOffset;<a name="line.203"></a>
<FONT color="green">204</FONT>        }<a name="line.204"></a>
<FONT color="green">205</FONT>    <a name="line.205"></a>
<FONT color="green">206</FONT>        /**<a name="line.206"></a>
<FONT color="green">207</FONT>         * Returns the y-offset for the 3D effect.<a name="line.207"></a>
<FONT color="green">208</FONT>         *<a name="line.208"></a>
<FONT color="green">209</FONT>         * @return The 3D effect.<a name="line.209"></a>
<FONT color="green">210</FONT>         */<a name="line.210"></a>
<FONT color="green">211</FONT>        public double getYOffset() {<a name="line.211"></a>
<FONT color="green">212</FONT>            return this.yOffset;<a name="line.212"></a>
<FONT color="green">213</FONT>        }<a name="line.213"></a>
<FONT color="green">214</FONT>    <a name="line.214"></a>
<FONT color="green">215</FONT>        /**<a name="line.215"></a>
<FONT color="green">216</FONT>         * Returns the paint used to highlight the left and bottom wall in the plot<a name="line.216"></a>
<FONT color="green">217</FONT>         * background.<a name="line.217"></a>
<FONT color="green">218</FONT>         *<a name="line.218"></a>
<FONT color="green">219</FONT>         * @return The paint.<a name="line.219"></a>
<FONT color="green">220</FONT>         */<a name="line.220"></a>
<FONT color="green">221</FONT>        public Paint getWallPaint() {<a name="line.221"></a>
<FONT color="green">222</FONT>            return this.wallPaint;<a name="line.222"></a>
<FONT color="green">223</FONT>        }<a name="line.223"></a>
<FONT color="green">224</FONT>    <a name="line.224"></a>
<FONT color="green">225</FONT>        /**<a name="line.225"></a>
<FONT color="green">226</FONT>         * Sets the paint used to hightlight the left and bottom walls in the plot<a name="line.226"></a>
<FONT color="green">227</FONT>         * background.<a name="line.227"></a>
<FONT color="green">228</FONT>         *<a name="line.228"></a>
<FONT color="green">229</FONT>         * @param paint  the paint.<a name="line.229"></a>
<FONT color="green">230</FONT>         */<a name="line.230"></a>
<FONT color="green">231</FONT>        public void setWallPaint(Paint paint) {<a name="line.231"></a>
<FONT color="green">232</FONT>            this.wallPaint = paint;<a name="line.232"></a>
<FONT color="green">233</FONT>        }<a name="line.233"></a>
<FONT color="green">234</FONT>    <a name="line.234"></a>
<FONT color="green">235</FONT>    <a name="line.235"></a>
<FONT color="green">236</FONT>        /**<a name="line.236"></a>
<FONT color="green">237</FONT>         * Initialises the renderer and returns a state object that will be passed <a name="line.237"></a>
<FONT color="green">238</FONT>         * to subsequent calls to the drawItem method.  This method gets called <a name="line.238"></a>
<FONT color="green">239</FONT>         * once at the start of the process of drawing a chart.<a name="line.239"></a>
<FONT color="green">240</FONT>         *<a name="line.240"></a>
<FONT color="green">241</FONT>         * @param g2  the graphics device.<a name="line.241"></a>
<FONT color="green">242</FONT>         * @param dataArea  the area in which the data is to be plotted.<a name="line.242"></a>
<FONT color="green">243</FONT>         * @param plot  the plot.<a name="line.243"></a>
<FONT color="green">244</FONT>         * @param rendererIndex  the renderer index.<a name="line.244"></a>
<FONT color="green">245</FONT>         * @param info  collects chart rendering information for return to caller.<a name="line.245"></a>
<FONT color="green">246</FONT>         * <a name="line.246"></a>
<FONT color="green">247</FONT>         * @return The renderer state.<a name="line.247"></a>
<FONT color="green">248</FONT>         */<a name="line.248"></a>
<FONT color="green">249</FONT>        public CategoryItemRendererState initialise(Graphics2D g2,<a name="line.249"></a>
<FONT color="green">250</FONT>                                                    Rectangle2D dataArea,<a name="line.250"></a>
<FONT color="green">251</FONT>                                                    CategoryPlot plot,<a name="line.251"></a>
<FONT color="green">252</FONT>                                                    int rendererIndex,<a name="line.252"></a>
<FONT color="green">253</FONT>                                                    PlotRenderingInfo info) {<a name="line.253"></a>
<FONT color="green">254</FONT>    <a name="line.254"></a>
<FONT color="green">255</FONT>            Rectangle2D adjusted = new Rectangle2D.Double(<a name="line.255"></a>
<FONT color="green">256</FONT>                dataArea.getX(), dataArea.getY() + getYOffset(),<a name="line.256"></a>
<FONT color="green">257</FONT>                dataArea.getWidth() - getXOffset(), <a name="line.257"></a>
<FONT color="green">258</FONT>                dataArea.getHeight() - getYOffset()<a name="line.258"></a>
<FONT color="green">259</FONT>            );<a name="line.259"></a>
<FONT color="green">260</FONT>            CategoryItemRendererState state = super.initialise(<a name="line.260"></a>
<FONT color="green">261</FONT>                g2, adjusted, plot, rendererIndex, info<a name="line.261"></a>
<FONT color="green">262</FONT>            );<a name="line.262"></a>
<FONT color="green">263</FONT>            return state;<a name="line.263"></a>
<FONT color="green">264</FONT>            <a name="line.264"></a>
<FONT color="green">265</FONT>        }<a name="line.265"></a>
<FONT color="green">266</FONT>        <a name="line.266"></a>
<FONT color="green">267</FONT>        /**<a name="line.267"></a>
<FONT color="green">268</FONT>         * Draws the background for the plot.<a name="line.268"></a>
<FONT color="green">269</FONT>         *<a name="line.269"></a>
<FONT color="green">270</FONT>         * @param g2  the graphics device.<a name="line.270"></a>
<FONT color="green">271</FONT>         * @param plot  the plot.<a name="line.271"></a>
<FONT color="green">272</FONT>         * @param dataArea  the area inside the axes.<a name="line.272"></a>
<FONT color="green">273</FONT>         */<a name="line.273"></a>
<FONT color="green">274</FONT>        public void drawBackground(Graphics2D g2, CategoryPlot plot, <a name="line.274"></a>
<FONT color="green">275</FONT>                                   Rectangle2D dataArea) {<a name="line.275"></a>
<FONT color="green">276</FONT>    <a name="line.276"></a>
<FONT color="green">277</FONT>            float x0 = (float) dataArea.getX();<a name="line.277"></a>
<FONT color="green">278</FONT>            float x1 = x0 + (float) Math.abs(this.xOffset);<a name="line.278"></a>
<FONT color="green">279</FONT>            float x3 = (float) dataArea.getMaxX();<a name="line.279"></a>