waterfallbarrenderer.html

jfreechart1。0。2的api。

<FONT color="green">144</FONT>         * @param lastBarPaint  the color of the last bar (&lt;code&gt;null&lt;/code&gt; not <a name="line.144"></a>
<FONT color="green">145</FONT>         *                      permitted).<a name="line.145"></a>
<FONT color="green">146</FONT>         */<a name="line.146"></a>
<FONT color="green">147</FONT>        public WaterfallBarRenderer(Paint firstBarPaint, <a name="line.147"></a>
<FONT color="green">148</FONT>                                    Paint positiveBarPaint, <a name="line.148"></a>
<FONT color="green">149</FONT>                                    Paint negativeBarPaint,<a name="line.149"></a>
<FONT color="green">150</FONT>                                    Paint lastBarPaint) {<a name="line.150"></a>
<FONT color="green">151</FONT>            super();<a name="line.151"></a>
<FONT color="green">152</FONT>            if (firstBarPaint == null) {<a name="line.152"></a>
<FONT color="green">153</FONT>                throw new IllegalArgumentException("Null 'firstBarPaint' argument");<a name="line.153"></a>
<FONT color="green">154</FONT>            }<a name="line.154"></a>
<FONT color="green">155</FONT>            if (positiveBarPaint == null) {<a name="line.155"></a>
<FONT color="green">156</FONT>                throw new IllegalArgumentException(<a name="line.156"></a>
<FONT color="green">157</FONT>                    "Null 'positiveBarPaint' argument"<a name="line.157"></a>
<FONT color="green">158</FONT>                );   <a name="line.158"></a>
<FONT color="green">159</FONT>            }<a name="line.159"></a>
<FONT color="green">160</FONT>            if (negativeBarPaint == null) {<a name="line.160"></a>
<FONT color="green">161</FONT>                throw new IllegalArgumentException(<a name="line.161"></a>
<FONT color="green">162</FONT>                    "Null 'negativeBarPaint' argument"<a name="line.162"></a>
<FONT color="green">163</FONT>                );   <a name="line.163"></a>
<FONT color="green">164</FONT>            }<a name="line.164"></a>
<FONT color="green">165</FONT>            if (lastBarPaint == null) {<a name="line.165"></a>
<FONT color="green">166</FONT>                throw new IllegalArgumentException("Null 'lastBarPaint' argument");<a name="line.166"></a>
<FONT color="green">167</FONT>            }<a name="line.167"></a>
<FONT color="green">168</FONT>            this.firstBarPaint = firstBarPaint;<a name="line.168"></a>
<FONT color="green">169</FONT>            this.lastBarPaint = lastBarPaint;<a name="line.169"></a>
<FONT color="green">170</FONT>            this.positiveBarPaint = positiveBarPaint;<a name="line.170"></a>
<FONT color="green">171</FONT>            this.negativeBarPaint = negativeBarPaint;<a name="line.171"></a>
<FONT color="green">172</FONT>            setGradientPaintTransformer(<a name="line.172"></a>
<FONT color="green">173</FONT>                new StandardGradientPaintTransformer(<a name="line.173"></a>
<FONT color="green">174</FONT>                    GradientPaintTransformType.CENTER_VERTICAL<a name="line.174"></a>
<FONT color="green">175</FONT>                )<a name="line.175"></a>
<FONT color="green">176</FONT>            );<a name="line.176"></a>
<FONT color="green">177</FONT>            setMinimumBarLength(1.0);<a name="line.177"></a>
<FONT color="green">178</FONT>        }<a name="line.178"></a>
<FONT color="green">179</FONT>    <a name="line.179"></a>
<FONT color="green">180</FONT>        /**<a name="line.180"></a>
<FONT color="green">181</FONT>         * Returns the range of values the renderer requires to display all the <a name="line.181"></a>
<FONT color="green">182</FONT>         * items from the specified dataset.<a name="line.182"></a>
<FONT color="green">183</FONT>         * <a name="line.183"></a>
<FONT color="green">184</FONT>         * @param dataset  the dataset (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.184"></a>
<FONT color="green">185</FONT>         * <a name="line.185"></a>
<FONT color="green">186</FONT>         * @return The range (or &lt;code&gt;null&lt;/code&gt; if the dataset is empty).<a name="line.186"></a>
<FONT color="green">187</FONT>         */<a name="line.187"></a>
<FONT color="green">188</FONT>        public Range findRangeBounds(CategoryDataset dataset) {<a name="line.188"></a>
<FONT color="green">189</FONT>            return DatasetUtilities.findCumulativeRangeBounds(dataset);   <a name="line.189"></a>
<FONT color="green">190</FONT>        }<a name="line.190"></a>
<FONT color="green">191</FONT>    <a name="line.191"></a>
<FONT color="green">192</FONT>        /**<a name="line.192"></a>
<FONT color="green">193</FONT>         * Returns the paint used to draw the first bar.<a name="line.193"></a>
<FONT color="green">194</FONT>         * <a name="line.194"></a>
<FONT color="green">195</FONT>         * @return The paint (never &lt;code&gt;null&lt;/code&gt;).<a name="line.195"></a>
<FONT color="green">196</FONT>         */<a name="line.196"></a>
<FONT color="green">197</FONT>        public Paint getFirstBarPaint() {<a name="line.197"></a>
<FONT color="green">198</FONT>            return this.firstBarPaint;<a name="line.198"></a>
<FONT color="green">199</FONT>        }<a name="line.199"></a>
<FONT color="green">200</FONT>        <a name="line.200"></a>
<FONT color="green">201</FONT>        /**<a name="line.201"></a>
<FONT color="green">202</FONT>         * Sets the paint that will be used to draw the first bar and sends a<a name="line.202"></a>
<FONT color="green">203</FONT>         * {@link RendererChangeEvent} to all registered listeners.<a name="line.203"></a>
<FONT color="green">204</FONT>         *<a name="line.204"></a>
<FONT color="green">205</FONT>         * @param paint  the paint (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.205"></a>
<FONT color="green">206</FONT>         */<a name="line.206"></a>
<FONT color="green">207</FONT>        public void setFirstBarPaint(Paint paint) {<a name="line.207"></a>
<FONT color="green">208</FONT>            if (paint == null) {<a name="line.208"></a>
<FONT color="green">209</FONT>                throw new IllegalArgumentException("Null 'paint' argument");   <a name="line.209"></a>
<FONT color="green">210</FONT>            }<a name="line.210"></a>
<FONT color="green">211</FONT>            this.firstBarPaint = paint;<a name="line.211"></a>
<FONT color="green">212</FONT>            notifyListeners(new RendererChangeEvent(this));<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 draw the last bar.<a name="line.216"></a>
<FONT color="green">217</FONT>         * <a name="line.217"></a>
<FONT color="green">218</FONT>         * @return The paint (never &lt;code&gt;null&lt;/code&gt;).<a name="line.218"></a>
<FONT color="green">219</FONT>         */<a name="line.219"></a>
<FONT color="green">220</FONT>        public Paint getLastBarPaint() {<a name="line.220"></a>
<FONT color="green">221</FONT>            return this.lastBarPaint;<a name="line.221"></a>
<FONT color="green">222</FONT>        }<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>         * Sets the paint that will be used to draw the last bar.<a name="line.225"></a>
<FONT color="green">226</FONT>         *<a name="line.226"></a>
<FONT color="green">227</FONT>         * @param paint  the paint (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.227"></a>
<FONT color="green">228</FONT>         */<a name="line.228"></a>
<FONT color="green">229</FONT>        public void setLastBarPaint(Paint paint) {<a name="line.229"></a>
<FONT color="green">230</FONT>            if (paint == null) {<a name="line.230"></a>
<FONT color="green">231</FONT>                throw new IllegalArgumentException("Null 'paint' argument");   <a name="line.231"></a>
<FONT color="green">232</FONT>            }<a name="line.232"></a>
<FONT color="green">233</FONT>            this.lastBarPaint = paint;<a name="line.233"></a>
<FONT color="green">234</FONT>            notifyListeners(new RendererChangeEvent(this));<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>        /**<a name="line.237"></a>
<FONT color="green">238</FONT>         * Returns the paint used to draw bars with positive values.<a name="line.238"></a>
<FONT color="green">239</FONT>         * <a name="line.239"></a>
<FONT color="green">240</FONT>         * @return The paint (never &lt;code&gt;null&lt;/code&gt;).<a name="line.240"></a>
<FONT color="green">241</FONT>         */<a name="line.241"></a>
<FONT color="green">242</FONT>        public Paint getPositiveBarPaint() {<a name="line.242"></a>
<FONT color="green">243</FONT>            return this.positiveBarPaint;<a name="line.243"></a>
<FONT color="green">244</FONT>        }<a name="line.244"></a>
<FONT color="green">245</FONT>        <a name="line.245"></a>
<FONT color="green">246</FONT>        /**<a name="line.246"></a>
<FONT color="green">247</FONT>         * Sets the paint that will be used to draw bars having positive values.<a name="line.247"></a>
<FONT color="green">248</FONT>         *<a name="line.248"></a>
<FONT color="green">249</FONT>         * @param paint  the paint (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.249"></a>
<FONT color="green">250</FONT>         */<a name="line.250"></a>
<FONT color="green">251</FONT>        public void setPositiveBarPaint(Paint paint) {<a name="line.251"></a>
<FONT color="green">252</FONT>            if (paint == null) {<a name="line.252"></a>
<FONT color="green">253</FONT>                throw new IllegalArgumentException("Null 'paint' argument");   <a name="line.253"></a>
<FONT color="green">254</FONT>            }<a name="line.254"></a>
<FONT color="green">255</FONT>            this.positiveBarPaint = paint;<a name="line.255"></a>
<FONT color="green">256</FONT>            notifyListeners(new RendererChangeEvent(this));<a name="line.256"></a>
<FONT color="green">257</FONT>        }<a name="line.257"></a>
<FONT color="green">258</FONT>    <a name="line.258"></a>
<FONT color="green">259</FONT>        /**<a name="line.259"></a>
<FONT color="green">260</FONT>         * Returns the paint used to draw bars with negative values.<a name="line.260"></a>
<FONT color="green">261</FONT>         * <a name="line.261"></a>
<FONT color="green">262</FONT>         * @return The paint (never &lt;code&gt;null&lt;/code&gt;).<a name="line.262"></a>
<FONT color="green">263</FONT>         */<a name="line.263"></a>
<FONT color="green">264</FONT>        public Paint getNegativeBarPaint() {<a name="line.264"></a>
<FONT color="green">265</FONT>            return this.negativeBarPaint;<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>        /**<a name="line.268"></a>
<FONT color="green">269</FONT>         * Sets the paint that will be used to draw bars having negative values.<a name="line.269"></a>
<FONT color="green">270</FONT>         *<a name="line.270"></a>
<FONT color="green">271</FONT>         * @param paint  the paint (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.271"></a>
<FONT color="green">272</FONT>         */<a name="line.272"></a>
<FONT color="green">273</FONT>        public void setNegativeBarPaint(Paint paint) {<a name="line.273"></a>
<FONT color="green">274</FONT>            if (paint == null) {<a name="line.274"></a>
<FONT color="green">275</FONT>                throw new IllegalArgumentException("Null 'paint' argument");   <a name="line.275"></a>
<FONT color="green">276</FONT>            }<a name="line.276"></a>
<FONT color="green">277</FONT>            this.negativeBarPaint = paint;<a name="line.277"></a>
<FONT color="green">278</FONT>            notifyListeners(new RendererChangeEvent(this));<a name="line.278"></a>
<FONT color="green">279</FONT>        }<a name="line.279"></a>
<FONT color="green">280</FONT>    <a name="line.280"></a>
<FONT color="green">281</FONT>        /**<a name="line.281"></a>
<FONT color="green">282</FONT>         * Draws the bar for a single (series, category) data item.<a name="line.282"></a>
<FONT color="green">283</FONT>         *<a name="line.283"></a>
<FONT color="green">284</FONT>         * @param g2  the graphics device.<a name="line.284"></a>
<FONT color="green">285</FONT>         * @param state  the renderer state.<a name="line.285"></a>
<FONT color="green">286</FONT>         * @param dataArea  the data area.<a name="line.286"></a>
<FONT color="green">287</FONT>         * @param plot  the plot.<a name="line.287"></a>
<FONT color="green">288</FONT>         * @param domainAxis  the domain axis.<a name="line.288"></a>
<FONT color="green">289</FONT>         * @param rangeAxis  the range axis.<a name="line.289"></a>