arearenderer.html

jfreechart1。0。2的api。

<FONT color="green">185</FONT>         * @param rangeAxis  the range axis.<a name="line.185"></a>
<FONT color="green">186</FONT>         * @param dataset  the dataset.<a name="line.186"></a>
<FONT color="green">187</FONT>         * @param row  the row index (zero-based).<a name="line.187"></a>
<FONT color="green">188</FONT>         * @param column  the column index (zero-based).<a name="line.188"></a>
<FONT color="green">189</FONT>         * @param pass  the pass index.<a name="line.189"></a>
<FONT color="green">190</FONT>         */<a name="line.190"></a>
<FONT color="green">191</FONT>        public void drawItem(Graphics2D g2,<a name="line.191"></a>
<FONT color="green">192</FONT>                             CategoryItemRendererState state,<a name="line.192"></a>
<FONT color="green">193</FONT>                             Rectangle2D dataArea,<a name="line.193"></a>
<FONT color="green">194</FONT>                             CategoryPlot plot,<a name="line.194"></a>
<FONT color="green">195</FONT>                             CategoryAxis domainAxis,<a name="line.195"></a>
<FONT color="green">196</FONT>                             ValueAxis rangeAxis,<a name="line.196"></a>
<FONT color="green">197</FONT>                             CategoryDataset dataset,<a name="line.197"></a>
<FONT color="green">198</FONT>                             int row,<a name="line.198"></a>
<FONT color="green">199</FONT>                             int column,<a name="line.199"></a>
<FONT color="green">200</FONT>                             int pass) {<a name="line.200"></a>
<FONT color="green">201</FONT>    <a name="line.201"></a>
<FONT color="green">202</FONT>            // plot non-null values only...<a name="line.202"></a>
<FONT color="green">203</FONT>            Number value = dataset.getValue(row, column);<a name="line.203"></a>
<FONT color="green">204</FONT>            if (value != null) {<a name="line.204"></a>
<FONT color="green">205</FONT>                PlotOrientation orientation = plot.getOrientation();<a name="line.205"></a>
<FONT color="green">206</FONT>                RectangleEdge axisEdge = plot.getDomainAxisEdge();<a name="line.206"></a>
<FONT color="green">207</FONT>                int count = dataset.getColumnCount();<a name="line.207"></a>
<FONT color="green">208</FONT>                float x0 = (float) domainAxis.getCategoryStart(<a name="line.208"></a>
<FONT color="green">209</FONT>                    column, count, dataArea, axisEdge<a name="line.209"></a>
<FONT color="green">210</FONT>                );<a name="line.210"></a>
<FONT color="green">211</FONT>                float x1 = (float) domainAxis.getCategoryMiddle(<a name="line.211"></a>
<FONT color="green">212</FONT>                    column, count, dataArea, axisEdge<a name="line.212"></a>
<FONT color="green">213</FONT>                );<a name="line.213"></a>
<FONT color="green">214</FONT>                float x2 = (float) domainAxis.getCategoryEnd(<a name="line.214"></a>
<FONT color="green">215</FONT>                    column, count, dataArea, axisEdge<a name="line.215"></a>
<FONT color="green">216</FONT>                );<a name="line.216"></a>
<FONT color="green">217</FONT>    <a name="line.217"></a>
<FONT color="green">218</FONT>                x0 = Math.round(x0);<a name="line.218"></a>
<FONT color="green">219</FONT>                x1 = Math.round(x1);<a name="line.219"></a>
<FONT color="green">220</FONT>                x2 = Math.round(x2);<a name="line.220"></a>
<FONT color="green">221</FONT>    <a name="line.221"></a>
<FONT color="green">222</FONT>                if (this.endType == AreaRendererEndType.TRUNCATE) {<a name="line.222"></a>
<FONT color="green">223</FONT>                    if (column == 0) {<a name="line.223"></a>
<FONT color="green">224</FONT>                        x0 = x1;   <a name="line.224"></a>
<FONT color="green">225</FONT>                    }<a name="line.225"></a>
<FONT color="green">226</FONT>                    else if (column == getColumnCount() - 1) {<a name="line.226"></a>
<FONT color="green">227</FONT>                        x2 = x1;   <a name="line.227"></a>
<FONT color="green">228</FONT>                    }<a name="line.228"></a>
<FONT color="green">229</FONT>                }<a name="line.229"></a>
<FONT color="green">230</FONT>                <a name="line.230"></a>
<FONT color="green">231</FONT>                double yy1 = value.doubleValue();<a name="line.231"></a>
<FONT color="green">232</FONT>    <a name="line.232"></a>
<FONT color="green">233</FONT>                double yy0 = 0.0;<a name="line.233"></a>
<FONT color="green">234</FONT>                if (column &gt; 0) {<a name="line.234"></a>
<FONT color="green">235</FONT>                    Number n0 = dataset.getValue(row, column - 1);<a name="line.235"></a>
<FONT color="green">236</FONT>                    if (n0 != null) {<a name="line.236"></a>
<FONT color="green">237</FONT>                        yy0 = (n0.doubleValue() + yy1) / 2.0;<a name="line.237"></a>
<FONT color="green">238</FONT>                    }<a name="line.238"></a>
<FONT color="green">239</FONT>                }<a name="line.239"></a>
<FONT color="green">240</FONT>    <a name="line.240"></a>
<FONT color="green">241</FONT>                double yy2 = 0.0;<a name="line.241"></a>
<FONT color="green">242</FONT>                if (column &lt; dataset.getColumnCount() - 1) {<a name="line.242"></a>
<FONT color="green">243</FONT>                    Number n2 = dataset.getValue(row, column + 1);<a name="line.243"></a>
<FONT color="green">244</FONT>                    if (n2 != null) {<a name="line.244"></a>
<FONT color="green">245</FONT>                        yy2 = (n2.doubleValue() + yy1) / 2.0;<a name="line.245"></a>
<FONT color="green">246</FONT>                    }<a name="line.246"></a>
<FONT color="green">247</FONT>                }<a name="line.247"></a>
<FONT color="green">248</FONT>    <a name="line.248"></a>
<FONT color="green">249</FONT>                RectangleEdge edge = plot.getRangeAxisEdge();<a name="line.249"></a>
<FONT color="green">250</FONT>                float y0 = (float) rangeAxis.valueToJava2D(yy0, dataArea, edge);<a name="line.250"></a>
<FONT color="green">251</FONT>                float y1 = (float) rangeAxis.valueToJava2D(yy1, dataArea, edge);<a name="line.251"></a>
<FONT color="green">252</FONT>                float y2 = (float) rangeAxis.valueToJava2D(yy2, dataArea, edge);<a name="line.252"></a>
<FONT color="green">253</FONT>                float yz = (float) rangeAxis.valueToJava2D(0.0, dataArea, edge);<a name="line.253"></a>
<FONT color="green">254</FONT>    <a name="line.254"></a>
<FONT color="green">255</FONT>                g2.setPaint(getItemPaint(row, column));<a name="line.255"></a>
<FONT color="green">256</FONT>                g2.setStroke(getItemStroke(row, column));<a name="line.256"></a>
<FONT color="green">257</FONT>    <a name="line.257"></a>
<FONT color="green">258</FONT>                GeneralPath area = new GeneralPath();<a name="line.258"></a>
<FONT color="green">259</FONT>    <a name="line.259"></a>
<FONT color="green">260</FONT>                if (orientation == PlotOrientation.VERTICAL) {<a name="line.260"></a>
<FONT color="green">261</FONT>                    area.moveTo(x0, yz);<a name="line.261"></a>
<FONT color="green">262</FONT>                    area.lineTo(x0, y0);<a name="line.262"></a>
<FONT color="green">263</FONT>                    area.lineTo(x1, y1);<a name="line.263"></a>
<FONT color="green">264</FONT>                    area.lineTo(x2, y2);<a name="line.264"></a>
<FONT color="green">265</FONT>                    area.lineTo(x2, yz);<a name="line.265"></a>
<FONT color="green">266</FONT>                }<a name="line.266"></a>
<FONT color="green">267</FONT>                else if (orientation == PlotOrientation.HORIZONTAL) {<a name="line.267"></a>
<FONT color="green">268</FONT>                    area.moveTo(yz, x0);<a name="line.268"></a>
<FONT color="green">269</FONT>                    area.lineTo(y0, x0);<a name="line.269"></a>
<FONT color="green">270</FONT>                    area.lineTo(y1, x1);<a name="line.270"></a>
<FONT color="green">271</FONT>                    area.lineTo(y2, x2);<a name="line.271"></a>
<FONT color="green">272</FONT>                    area.lineTo(yz, x2);<a name="line.272"></a>
<FONT color="green">273</FONT>                }<a name="line.273"></a>
<FONT color="green">274</FONT>                area.closePath();<a name="line.274"></a>
<FONT color="green">275</FONT>    <a name="line.275"></a>
<FONT color="green">276</FONT>                g2.setPaint(getItemPaint(row, column));<a name="line.276"></a>
<FONT color="green">277</FONT>                g2.fill(area);<a name="line.277"></a>
<FONT color="green">278</FONT>    <a name="line.278"></a>
<FONT color="green">279</FONT>                // draw the item labels if there are any...<a name="line.279"></a>
<FONT color="green">280</FONT>                if (isItemLabelVisible(row, column)) {<a name="line.280"></a>
<FONT color="green">281</FONT>                    drawItemLabel(<a name="line.281"></a>
<FONT color="green">282</FONT>                        g2, orientation, dataset, row, column, x1, y1, <a name="line.282"></a>
<FONT color="green">283</FONT>                        (value.doubleValue() &lt; 0.0)<a name="line.283"></a>
<FONT color="green">284</FONT>                    );<a name="line.284"></a>
<FONT color="green">285</FONT>                }<a name="line.285"></a>
<FONT color="green">286</FONT>    <a name="line.286"></a>
<FONT color="green">287</FONT>                // add an item entity, if this information is being collected<a name="line.287"></a>
<FONT color="green">288</FONT>                EntityCollection entities = state.getEntityCollection();<a name="line.288"></a>
<FONT color="green">289</FONT>                if (entities != null) {<a name="line.289"></a>
<FONT color="green">290</FONT>                    addItemEntity(entities, dataset, row, column, area);<a name="line.290"></a>
<FONT color="green">291</FONT>                }<a name="line.291"></a>
<FONT color="green">292</FONT>            }<a name="line.292"></a>
<FONT color="green">293</FONT>    <a name="line.293"></a>
<FONT color="green">294</FONT>        }<a name="line.294"></a>
<FONT color="green">295</FONT>        <a name="line.295"></a>
<FONT color="green">296</FONT>        /**<a name="line.296"></a>
<FONT color="green">297</FONT>         * Returns an independent copy of the renderer.<a name="line.297"></a>
<FONT color="green">298</FONT>         * <a name="line.298"></a>
<FONT color="green">299</FONT>         * @return A clone.<a name="line.299"></a>
<FONT color="green">300</FONT>         * <a name="line.300"></a>
<FONT color="green">301</FONT>         * @throws CloneNotSupportedException  should not happen.<a name="line.301"></a>
<FONT color="green">302</FONT>         */<a name="line.302"></a>
<FONT color="green">303</FONT>        public Object clone() throws CloneNotSupportedException {<a name="line.303"></a>
<FONT color="green">304</FONT>            return super.clone();<a name="line.304"></a>
<FONT color="green">305</FONT>        }<a name="line.305"></a>
<FONT color="green">306</FONT>    <a name="line.306"></a>
<FONT color="green">307</FONT>    }<a name="line.307"></a>




























































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