categorysteprenderer.html

jfreechart1。0。2的api。

<FONT color="green">176</FONT>            if (value == null) {<a name="line.176"></a>
<FONT color="green">177</FONT>                return;<a name="line.177"></a>
<FONT color="green">178</FONT>            }<a name="line.178"></a>
<FONT color="green">179</FONT>            PlotOrientation orientation = plot.getOrientation();<a name="line.179"></a>
<FONT color="green">180</FONT>    <a name="line.180"></a>
<FONT color="green">181</FONT>            // current data point...<a name="line.181"></a>
<FONT color="green">182</FONT>            double x1s = domainAxis.getCategoryStart(<a name="line.182"></a>
<FONT color="green">183</FONT>                column, getColumnCount(), dataArea, plot.getDomainAxisEdge()<a name="line.183"></a>
<FONT color="green">184</FONT>            );<a name="line.184"></a>
<FONT color="green">185</FONT>            double x1 = domainAxis.getCategoryMiddle(<a name="line.185"></a>
<FONT color="green">186</FONT>                column, getColumnCount(), dataArea, plot.getDomainAxisEdge()<a name="line.186"></a>
<FONT color="green">187</FONT>            );<a name="line.187"></a>
<FONT color="green">188</FONT>            double x1e = 2 * x1 - x1s; // or: x1s + 2*(x1-x1s)<a name="line.188"></a>
<FONT color="green">189</FONT>            double y1 = rangeAxis.valueToJava2D(<a name="line.189"></a>
<FONT color="green">190</FONT>                value.doubleValue(), dataArea, plot.getRangeAxisEdge()<a name="line.190"></a>
<FONT color="green">191</FONT>            );<a name="line.191"></a>
<FONT color="green">192</FONT>            g2.setPaint(getItemPaint(row, column));<a name="line.192"></a>
<FONT color="green">193</FONT>            g2.setStroke(getItemStroke(row, column));<a name="line.193"></a>
<FONT color="green">194</FONT>    <a name="line.194"></a>
<FONT color="green">195</FONT>            if (column != 0) {<a name="line.195"></a>
<FONT color="green">196</FONT>                Number previousValue = dataset.getValue(row, column - 1);<a name="line.196"></a>
<FONT color="green">197</FONT>                if (previousValue != null) {<a name="line.197"></a>
<FONT color="green">198</FONT>                    // previous data point...<a name="line.198"></a>
<FONT color="green">199</FONT>                    double previous = previousValue.doubleValue();<a name="line.199"></a>
<FONT color="green">200</FONT>                    double x0s = domainAxis.getCategoryStart(<a name="line.200"></a>
<FONT color="green">201</FONT>                        column - 1, getColumnCount(), dataArea, <a name="line.201"></a>
<FONT color="green">202</FONT>                        plot.getDomainAxisEdge()<a name="line.202"></a>
<FONT color="green">203</FONT>                    );<a name="line.203"></a>
<FONT color="green">204</FONT>                    double x0 = domainAxis.getCategoryMiddle(<a name="line.204"></a>
<FONT color="green">205</FONT>                        column - 1, getColumnCount(), dataArea, <a name="line.205"></a>
<FONT color="green">206</FONT>                        plot.getDomainAxisEdge()<a name="line.206"></a>
<FONT color="green">207</FONT>                    );<a name="line.207"></a>
<FONT color="green">208</FONT>                    double x0e = 2 * x0 - x0s; // or: x0s + 2*(x0-x0s)<a name="line.208"></a>
<FONT color="green">209</FONT>                    double y0 = rangeAxis.valueToJava2D(<a name="line.209"></a>
<FONT color="green">210</FONT>                        previous, dataArea, plot.getRangeAxisEdge()<a name="line.210"></a>
<FONT color="green">211</FONT>                    );<a name="line.211"></a>
<FONT color="green">212</FONT>                    if (getStagger()) {<a name="line.212"></a>
<FONT color="green">213</FONT>                        int xStagger = row * STAGGER_WIDTH;<a name="line.213"></a>
<FONT color="green">214</FONT>                        if (xStagger &gt; (x1s - x0e)) {<a name="line.214"></a>
<FONT color="green">215</FONT>                            xStagger = (int) (x1s - x0e);<a name="line.215"></a>
<FONT color="green">216</FONT>                        }<a name="line.216"></a>
<FONT color="green">217</FONT>                        x1s = x0e + xStagger;<a name="line.217"></a>
<FONT color="green">218</FONT>                    }<a name="line.218"></a>
<FONT color="green">219</FONT>                    drawLine(g2, orientation, x0e, y0, x1s, y0); <a name="line.219"></a>
<FONT color="green">220</FONT>                        // extend x0's flat bar<a name="line.220"></a>
<FONT color="green">221</FONT>    <a name="line.221"></a>
<FONT color="green">222</FONT>                    drawLine(g2, orientation, x1s, y0, x1s, y1); // upright bar<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>           drawLine(g2, orientation, x1s, y1, x1e, y1); // x1's flat bar<a name="line.225"></a>
<FONT color="green">226</FONT>    <a name="line.226"></a>
<FONT color="green">227</FONT>           // draw the item labels if there are any...<a name="line.227"></a>
<FONT color="green">228</FONT>           if (isItemLabelVisible(row, column)) {<a name="line.228"></a>
<FONT color="green">229</FONT>                drawItemLabel(<a name="line.229"></a>
<FONT color="green">230</FONT>                    g2, orientation, dataset, row, column, x1, y1, <a name="line.230"></a>
<FONT color="green">231</FONT>                    (value.doubleValue() &lt; 0.0)<a name="line.231"></a>
<FONT color="green">232</FONT>                );<a name="line.232"></a>
<FONT color="green">233</FONT>           }<a name="line.233"></a>
<FONT color="green">234</FONT>        /* This is how LineAndShapeRenderer.drawItem() handles tips and URLs, but<a name="line.234"></a>
<FONT color="green">235</FONT>           I omit it due to time pressure. It shouldn't be hard to put back<a name="line.235"></a>
<FONT color="green">236</FONT>     in.<a name="line.236"></a>
<FONT color="green">237</FONT>    <a name="line.237"></a>
<FONT color="green">238</FONT>           // collect entity and tool tip information...<a name="line.238"></a>
<FONT color="green">239</FONT>           if (state.getInfo() != null) {<a name="line.239"></a>
<FONT color="green">240</FONT>               EntityCollection entities =<a name="line.240"></a>
<FONT color="green">241</FONT>     state.getInfo().getOwner().getEntityCollection();<a name="line.241"></a>
<FONT color="green">242</FONT>               if (entities != null &amp;&amp; shape != null) {<a name="line.242"></a>
<FONT color="green">243</FONT>                   String tip = null;<a name="line.243"></a>
<FONT color="green">244</FONT>                   CategoryItemLabelGenerator generator =<a name="line.244"></a>
<FONT color="green">245</FONT>     getItemLabelGenerator(row, column);<a name="line.245"></a>
<FONT color="green">246</FONT>                   if (generator != null) {<a name="line.246"></a>
<FONT color="green">247</FONT>                       tip = generator.generateToolTip(dataset, row, column);<a name="line.247"></a>
<FONT color="green">248</FONT>                   }<a name="line.248"></a>
<FONT color="green">249</FONT>                   String url = null;<a name="line.249"></a>
<FONT color="green">250</FONT>                   if (getItemURLGenerator(row, column) != null)                    <a name="line.250"></a>
<FONT color="green">251</FONT>                   url = getItemURLGenerator(row, column).generateURL(dataset, row, <a name="line.251"></a>
<FONT color="green">252</FONT>                     column);<a name="line.252"></a>
<FONT color="green">253</FONT>                   }<a name="line.253"></a>
<FONT color="green">254</FONT>                   CategoryItemEntity entity = new CategoryItemEntity(<a name="line.254"></a>
<FONT color="green">255</FONT>                       shape, tip, url, dataset, row,<a name="line.255"></a>
<FONT color="green">256</FONT>     dataset.getColumnKey(column), column);<a name="line.256"></a>
<FONT color="green">257</FONT>                   entities.addEntity(entity);<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>        */<a name="line.260"></a>
<FONT color="green">261</FONT>    <a name="line.261"></a>
<FONT color="green">262</FONT>        }<a name="line.262"></a>
<FONT color="green">263</FONT>        <a name="line.263"></a>
<FONT color="green">264</FONT>        /**<a name="line.264"></a>
<FONT color="green">265</FONT>         * Tests this renderer for equality with an arbitrary object.<a name="line.265"></a>
<FONT color="green">266</FONT>         * <a name="line.266"></a>
<FONT color="green">267</FONT>         * @param obj  the object (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.267"></a>
<FONT color="green">268</FONT>         * <a name="line.268"></a>
<FONT color="green">269</FONT>         * @return A boolean.<a name="line.269"></a>
<FONT color="green">270</FONT>         */<a name="line.270"></a>
<FONT color="green">271</FONT>        public boolean equals(Object obj) {<a name="line.271"></a>
<FONT color="green">272</FONT>            if (obj == this) {<a name="line.272"></a>
<FONT color="green">273</FONT>                return true;   <a name="line.273"></a>
<FONT color="green">274</FONT>            }<a name="line.274"></a>
<FONT color="green">275</FONT>            if (!(obj instanceof CategoryStepRenderer)) {<a name="line.275"></a>
<FONT color="green">276</FONT>                return false;   <a name="line.276"></a>
<FONT color="green">277</FONT>            }<a name="line.277"></a>
<FONT color="green">278</FONT>            if (!super.equals(obj)) {<a name="line.278"></a>
<FONT color="green">279</FONT>                return false;   <a name="line.279"></a>
<FONT color="green">280</FONT>            }<a name="line.280"></a>
<FONT color="green">281</FONT>            CategoryStepRenderer that = (CategoryStepRenderer) obj;<a name="line.281"></a>
<FONT color="green">282</FONT>            if (this.stagger != that.stagger) {<a name="line.282"></a>
<FONT color="green">283</FONT>                return false;   <a name="line.283"></a>
<FONT color="green">284</FONT>            }<a name="line.284"></a>
<FONT color="green">285</FONT>            return true;<a name="line.285"></a>
<FONT color="green">286</FONT>        }<a name="line.286"></a>
<FONT color="green">287</FONT>    <a name="line.287"></a>
<FONT color="green">288</FONT>    }<a name="line.288"></a>




























































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