stackedarearenderer.html

jfreechart1。0。2的api。

<FONT color="green">159</FONT>                if (previousValue != null) {<a name="line.159"></a>
<FONT color="green">160</FONT>    <a name="line.160"></a>
<FONT color="green">161</FONT>                    double x0 = domainAxis.getCategoryMiddle(<a name="line.161"></a>
<FONT color="green">162</FONT>                        column - 1, getColumnCount(), dataArea, <a name="line.162"></a>
<FONT color="green">163</FONT>                        plot.getDomainAxisEdge()<a name="line.163"></a>
<FONT color="green">164</FONT>                    );<a name="line.164"></a>
<FONT color="green">165</FONT>                    double y0Untranslated = previousValue.doubleValue();<a name="line.165"></a>
<FONT color="green">166</FONT>    <a name="line.166"></a>
<FONT color="green">167</FONT>                    // Get the previous height, but this will be different for both<a name="line.167"></a>
<FONT color="green">168</FONT>                    // y0 and y1 as the previous series values could differ.<a name="line.168"></a>
<FONT color="green">169</FONT>                    double previousHeightx0Untranslated <a name="line.169"></a>
<FONT color="green">170</FONT>                        = getPreviousHeight(dataset, row, column - 1);<a name="line.170"></a>
<FONT color="green">171</FONT>                    double previousHeightx1Untranslated <a name="line.171"></a>
<FONT color="green">172</FONT>                        = getPreviousHeight(dataset, row, column);<a name="line.172"></a>
<FONT color="green">173</FONT>    <a name="line.173"></a>
<FONT color="green">174</FONT>                    // Now stack the current y values on top of the previous values.<a name="line.174"></a>
<FONT color="green">175</FONT>                    y0Untranslated += previousHeightx0Untranslated;<a name="line.175"></a>
<FONT color="green">176</FONT>                    y1Untranslated += previousHeightx1Untranslated;<a name="line.176"></a>
<FONT color="green">177</FONT>    <a name="line.177"></a>
<FONT color="green">178</FONT>                    // Now translate the previous heights<a name="line.178"></a>
<FONT color="green">179</FONT>                    RectangleEdge location = plot.getRangeAxisEdge();<a name="line.179"></a>
<FONT color="green">180</FONT>                    double previousHeightx0 = rangeAxis.valueToJava2D(<a name="line.180"></a>
<FONT color="green">181</FONT>                        previousHeightx0Untranslated, dataArea, location<a name="line.181"></a>
<FONT color="green">182</FONT>                    );<a name="line.182"></a>
<FONT color="green">183</FONT>                    double previousHeightx1 = rangeAxis.valueToJava2D(<a name="line.183"></a>
<FONT color="green">184</FONT>                        previousHeightx1Untranslated, dataArea, location<a name="line.184"></a>
<FONT color="green">185</FONT>                    );<a name="line.185"></a>
<FONT color="green">186</FONT>    <a name="line.186"></a>
<FONT color="green">187</FONT>                    // Now translate the current y values.<a name="line.187"></a>
<FONT color="green">188</FONT>                    double y0 = rangeAxis.valueToJava2D(<a name="line.188"></a>
<FONT color="green">189</FONT>                        y0Untranslated, dataArea, location<a name="line.189"></a>
<FONT color="green">190</FONT>                    );<a name="line.190"></a>
<FONT color="green">191</FONT>                    y1 = rangeAxis.valueToJava2D(<a name="line.191"></a>
<FONT color="green">192</FONT>                        y1Untranslated, dataArea, location<a name="line.192"></a>
<FONT color="green">193</FONT>                    );<a name="line.193"></a>
<FONT color="green">194</FONT>    <a name="line.194"></a>
<FONT color="green">195</FONT>                    Polygon p = null;<a name="line.195"></a>
<FONT color="green">196</FONT>                    PlotOrientation orientation = plot.getOrientation();<a name="line.196"></a>
<FONT color="green">197</FONT>                    if (orientation == PlotOrientation.HORIZONTAL) {<a name="line.197"></a>
<FONT color="green">198</FONT>                        p = new Polygon();<a name="line.198"></a>
<FONT color="green">199</FONT>                        p.addPoint((int) y0, (int) x0);<a name="line.199"></a>
<FONT color="green">200</FONT>                        p.addPoint((int) y1, (int) x1);<a name="line.200"></a>
<FONT color="green">201</FONT>                        p.addPoint((int) previousHeightx1, (int) x1);<a name="line.201"></a>
<FONT color="green">202</FONT>                        p.addPoint((int) previousHeightx0, (int) x0);<a name="line.202"></a>
<FONT color="green">203</FONT>                    }<a name="line.203"></a>
<FONT color="green">204</FONT>                    else if (orientation == PlotOrientation.VERTICAL) {<a name="line.204"></a>
<FONT color="green">205</FONT>                        p = new Polygon();<a name="line.205"></a>
<FONT color="green">206</FONT>                        p.addPoint((int) x0, (int) y0);<a name="line.206"></a>
<FONT color="green">207</FONT>                        p.addPoint((int) x1, (int) y1);<a name="line.207"></a>
<FONT color="green">208</FONT>                        p.addPoint((int) x1, (int) previousHeightx1);<a name="line.208"></a>
<FONT color="green">209</FONT>                        p.addPoint((int) x0, (int) previousHeightx0);<a name="line.209"></a>
<FONT color="green">210</FONT>                    }<a name="line.210"></a>
<FONT color="green">211</FONT>                    g2.setPaint(getItemPaint(row, column));<a name="line.211"></a>
<FONT color="green">212</FONT>                    g2.setStroke(getItemStroke(row, column));<a name="line.212"></a>
<FONT color="green">213</FONT>                    g2.fill(p);<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>            }<a name="line.216"></a>
<FONT color="green">217</FONT>    <a name="line.217"></a>
<FONT color="green">218</FONT>            // add an item entity, if this information is being collected<a name="line.218"></a>
<FONT color="green">219</FONT>            EntityCollection entities = state.getEntityCollection();<a name="line.219"></a>
<FONT color="green">220</FONT>            if (entities != null) {<a name="line.220"></a>
<FONT color="green">221</FONT>                Shape shape = new Rectangle2D.Double(x1 - 3.0, y1 - 3.0, 6.0, 6.0);<a name="line.221"></a>
<FONT color="green">222</FONT>                addItemEntity(entities, dataset, row, column, shape);<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>    <a name="line.226"></a>
<FONT color="green">227</FONT>        /**<a name="line.227"></a>
<FONT color="green">228</FONT>         * Calculates the stacked value of the all series up to, but not including <a name="line.228"></a>
<FONT color="green">229</FONT>         * &lt;code&gt;series&lt;/code&gt; for the specified category, &lt;code&gt;category&lt;/code&gt;.  <a name="line.229"></a>
<FONT color="green">230</FONT>         * It returns 0.0 if &lt;code&gt;series&lt;/code&gt; is the first series, i.e. 0.<a name="line.230"></a>
<FONT color="green">231</FONT>         *<a name="line.231"></a>
<FONT color="green">232</FONT>         * @param data  the data.<a name="line.232"></a>
<FONT color="green">233</FONT>         * @param series  the series.<a name="line.233"></a>
<FONT color="green">234</FONT>         * @param category  the category.<a name="line.234"></a>
<FONT color="green">235</FONT>         *<a name="line.235"></a>
<FONT color="green">236</FONT>         * @return double returns a cumulative value for all series' values up to <a name="line.236"></a>
<FONT color="green">237</FONT>         *         but excluding &lt;code&gt;series&lt;/code&gt; for Object <a name="line.237"></a>
<FONT color="green">238</FONT>         *         &lt;code&gt;category&lt;/code&gt;.<a name="line.238"></a>
<FONT color="green">239</FONT>         */<a name="line.239"></a>
<FONT color="green">240</FONT>        protected double getPreviousHeight(CategoryDataset data, <a name="line.240"></a>
<FONT color="green">241</FONT>                                           int series, int category) {<a name="line.241"></a>
<FONT color="green">242</FONT>    <a name="line.242"></a>
<FONT color="green">243</FONT>            double result = 0.0;<a name="line.243"></a>
<FONT color="green">244</FONT>            Number tmp;<a name="line.244"></a>
<FONT color="green">245</FONT>            for (int i = 0; i &lt; series; i++) {<a name="line.245"></a>
<FONT color="green">246</FONT>                tmp = data.getValue(i, category);<a name="line.246"></a>
<FONT color="green">247</FONT>                if (tmp != null) {<a name="line.247"></a>
<FONT color="green">248</FONT>                    result += tmp.doubleValue();<a name="line.248"></a>
<FONT color="green">249</FONT>                }<a name="line.249"></a>
<FONT color="green">250</FONT>            }<a name="line.250"></a>
<FONT color="green">251</FONT>            return result;<a name="line.251"></a>
<FONT color="green">252</FONT>    <a name="line.252"></a>
<FONT color="green">253</FONT>        }<a name="line.253"></a>
<FONT color="green">254</FONT>    <a name="line.254"></a>
<FONT color="green">255</FONT>    }<a name="line.255"></a>




























































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