xybubblerenderer.html

jfreechart1。0。2的api。

<FONT color="green">129</FONT>            this.scaleType = scaleType;<a name="line.129"></a>
<FONT color="green">130</FONT>        }<a name="line.130"></a>
<FONT color="green">131</FONT>    <a name="line.131"></a>
<FONT color="green">132</FONT>        /**<a name="line.132"></a>
<FONT color="green">133</FONT>         * Returns the scale type that was set when the renderer was constructed.<a name="line.133"></a>
<FONT color="green">134</FONT>         *<a name="line.134"></a>
<FONT color="green">135</FONT>         * @return The scale type (one of: {@link #SCALE_ON_BOTH_AXES}, <a name="line.135"></a>
<FONT color="green">136</FONT>         *         {@link #SCALE_ON_DOMAIN_AXIS}, {@link #SCALE_ON_RANGE_AXIS}).<a name="line.136"></a>
<FONT color="green">137</FONT>         */<a name="line.137"></a>
<FONT color="green">138</FONT>        public int getScaleType() {<a name="line.138"></a>
<FONT color="green">139</FONT>            return this.scaleType;<a name="line.139"></a>
<FONT color="green">140</FONT>        }<a name="line.140"></a>
<FONT color="green">141</FONT>    <a name="line.141"></a>
<FONT color="green">142</FONT>        /**<a name="line.142"></a>
<FONT color="green">143</FONT>         * Draws the visual representation of a single data item.<a name="line.143"></a>
<FONT color="green">144</FONT>         *<a name="line.144"></a>
<FONT color="green">145</FONT>         * @param g2  the graphics device.<a name="line.145"></a>
<FONT color="green">146</FONT>         * @param state  the renderer state.<a name="line.146"></a>
<FONT color="green">147</FONT>         * @param dataArea  the area within which the data is being drawn.<a name="line.147"></a>
<FONT color="green">148</FONT>         * @param info  collects information about the drawing.<a name="line.148"></a>
<FONT color="green">149</FONT>         * @param plot  the plot (can be used to obtain standard color <a name="line.149"></a>
<FONT color="green">150</FONT>         *              information etc).<a name="line.150"></a>
<FONT color="green">151</FONT>         * @param domainAxis  the domain (horizontal) axis.<a name="line.151"></a>
<FONT color="green">152</FONT>         * @param rangeAxis  the range (vertical) axis.<a name="line.152"></a>
<FONT color="green">153</FONT>         * @param dataset  the dataset.<a name="line.153"></a>
<FONT color="green">154</FONT>         * @param series  the series index (zero-based).<a name="line.154"></a>
<FONT color="green">155</FONT>         * @param item  the item index (zero-based).<a name="line.155"></a>
<FONT color="green">156</FONT>         * @param crosshairState  crosshair information for the plot <a name="line.156"></a>
<FONT color="green">157</FONT>         *                        (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.157"></a>
<FONT color="green">158</FONT>         * @param pass  the pass index.<a name="line.158"></a>
<FONT color="green">159</FONT>         */<a name="line.159"></a>
<FONT color="green">160</FONT>        public void drawItem(Graphics2D g2, XYItemRendererState state,<a name="line.160"></a>
<FONT color="green">161</FONT>                Rectangle2D dataArea, PlotRenderingInfo info, XYPlot plot,<a name="line.161"></a>
<FONT color="green">162</FONT>                ValueAxis domainAxis, ValueAxis rangeAxis, XYDataset dataset, <a name="line.162"></a>
<FONT color="green">163</FONT>                int series, int item, CrosshairState crosshairState, int pass) {<a name="line.163"></a>
<FONT color="green">164</FONT>    <a name="line.164"></a>
<FONT color="green">165</FONT>            PlotOrientation orientation = plot.getOrientation();<a name="line.165"></a>
<FONT color="green">166</FONT>            <a name="line.166"></a>
<FONT color="green">167</FONT>            // get the data point...<a name="line.167"></a>
<FONT color="green">168</FONT>            double x = dataset.getXValue(series, item);<a name="line.168"></a>
<FONT color="green">169</FONT>            double y = dataset.getYValue(series, item);<a name="line.169"></a>
<FONT color="green">170</FONT>            double z = Double.NaN;<a name="line.170"></a>
<FONT color="green">171</FONT>            if (dataset instanceof XYZDataset) {<a name="line.171"></a>
<FONT color="green">172</FONT>                XYZDataset xyzData = (XYZDataset) dataset;<a name="line.172"></a>
<FONT color="green">173</FONT>                z = xyzData.getZValue(series, item);<a name="line.173"></a>
<FONT color="green">174</FONT>            }<a name="line.174"></a>
<FONT color="green">175</FONT>            if (!Double.isNaN(z)) {<a name="line.175"></a>
<FONT color="green">176</FONT>                RectangleEdge domainAxisLocation = plot.getDomainAxisEdge();<a name="line.176"></a>
<FONT color="green">177</FONT>                RectangleEdge rangeAxisLocation = plot.getRangeAxisEdge();<a name="line.177"></a>
<FONT color="green">178</FONT>                double transX = domainAxis.valueToJava2D(x, dataArea, <a name="line.178"></a>
<FONT color="green">179</FONT>                        domainAxisLocation);<a name="line.179"></a>
<FONT color="green">180</FONT>                double transY = rangeAxis.valueToJava2D(y, dataArea, <a name="line.180"></a>
<FONT color="green">181</FONT>                        rangeAxisLocation);<a name="line.181"></a>
<FONT color="green">182</FONT>    <a name="line.182"></a>
<FONT color="green">183</FONT>                double transDomain = 0.0;<a name="line.183"></a>
<FONT color="green">184</FONT>                double transRange = 0.0;<a name="line.184"></a>
<FONT color="green">185</FONT>                double zero;<a name="line.185"></a>
<FONT color="green">186</FONT>    <a name="line.186"></a>
<FONT color="green">187</FONT>                switch(getScaleType()) {<a name="line.187"></a>
<FONT color="green">188</FONT>                    case SCALE_ON_DOMAIN_AXIS:<a name="line.188"></a>
<FONT color="green">189</FONT>                        zero = domainAxis.valueToJava2D(0.0, dataArea, <a name="line.189"></a>
<FONT color="green">190</FONT>                                domainAxisLocation);<a name="line.190"></a>
<FONT color="green">191</FONT>                        transDomain = domainAxis.valueToJava2D(z, dataArea, <a name="line.191"></a>
<FONT color="green">192</FONT>                                domainAxisLocation) - zero;<a name="line.192"></a>
<FONT color="green">193</FONT>                        transRange = transDomain;<a name="line.193"></a>
<FONT color="green">194</FONT>                        break;<a name="line.194"></a>
<FONT color="green">195</FONT>                    case SCALE_ON_RANGE_AXIS:<a name="line.195"></a>
<FONT color="green">196</FONT>                        zero = rangeAxis.valueToJava2D(0.0, dataArea, <a name="line.196"></a>
<FONT color="green">197</FONT>                                rangeAxisLocation);<a name="line.197"></a>
<FONT color="green">198</FONT>                        transRange = zero - rangeAxis.valueToJava2D(z, dataArea, <a name="line.198"></a>
<FONT color="green">199</FONT>                                rangeAxisLocation);<a name="line.199"></a>
<FONT color="green">200</FONT>                        transDomain = transRange;<a name="line.200"></a>
<FONT color="green">201</FONT>                        break;<a name="line.201"></a>
<FONT color="green">202</FONT>                    default:<a name="line.202"></a>
<FONT color="green">203</FONT>                        double zero1 = domainAxis.valueToJava2D(0.0, dataArea, <a name="line.203"></a>
<FONT color="green">204</FONT>                                domainAxisLocation);<a name="line.204"></a>
<FONT color="green">205</FONT>                        double zero2 = rangeAxis.valueToJava2D(0.0, dataArea, <a name="line.205"></a>
<FONT color="green">206</FONT>                                rangeAxisLocation);<a name="line.206"></a>
<FONT color="green">207</FONT>                        transDomain = domainAxis.valueToJava2D(z, dataArea, <a name="line.207"></a>
<FONT color="green">208</FONT>                                domainAxisLocation) - zero1;<a name="line.208"></a>
<FONT color="green">209</FONT>                        transRange = zero2 - rangeAxis.valueToJava2D(z, dataArea, <a name="line.209"></a>
<FONT color="green">210</FONT>                                rangeAxisLocation);<a name="line.210"></a>
<FONT color="green">211</FONT>                }<a name="line.211"></a>
<FONT color="green">212</FONT>                transDomain = Math.abs(transDomain);<a name="line.212"></a>
<FONT color="green">213</FONT>                transRange = Math.abs(transRange);<a name="line.213"></a>
<FONT color="green">214</FONT>                Ellipse2D circle = null;<a name="line.214"></a>
<FONT color="green">215</FONT>                if (orientation == PlotOrientation.VERTICAL) {<a name="line.215"></a>
<FONT color="green">216</FONT>                    circle = new Ellipse2D.Double(transX - transDomain / 2.0, <a name="line.216"></a>
<FONT color="green">217</FONT>                            transY - transRange / 2.0, transDomain, transRange);<a name="line.217"></a>
<FONT color="green">218</FONT>                }<a name="line.218"></a>
<FONT color="green">219</FONT>                else if (orientation == PlotOrientation.HORIZONTAL) {<a name="line.219"></a>
<FONT color="green">220</FONT>                    circle = new Ellipse2D.Double(transY - transRange / 2.0, <a name="line.220"></a>
<FONT color="green">221</FONT>                            transX - transDomain / 2.0, transRange, transDomain);<a name="line.221"></a>
<FONT color="green">222</FONT>                }<a name="line.222"></a>
<FONT color="green">223</FONT>                g2.setPaint(getItemPaint(series, item));<a name="line.223"></a>
<FONT color="green">224</FONT>                g2.fill(circle);<a name="line.224"></a>
<FONT color="green">225</FONT>                g2.setStroke(new BasicStroke(1.0f));<a name="line.225"></a>
<FONT color="green">226</FONT>                g2.setPaint(Color.lightGray);<a name="line.226"></a>
<FONT color="green">227</FONT>                g2.draw(circle);<a name="line.227"></a>
<FONT color="green">228</FONT>    <a name="line.228"></a>
<FONT color="green">229</FONT>                if (isItemLabelVisible(series, item)) {<a name="line.229"></a>
<FONT color="green">230</FONT>                    if (orientation == PlotOrientation.VERTICAL) {<a name="line.230"></a>
<FONT color="green">231</FONT>                        drawItemLabel(g2, orientation, dataset, series, item, <a name="line.231"></a>
<FONT color="green">232</FONT>                                transX, transY, false);<a name="line.232"></a>
<FONT color="green">233</FONT>                    }<a name="line.233"></a>
<FONT color="green">234</FONT>                    else if (orientation == PlotOrientation.HORIZONTAL) {<a name="line.234"></a>
<FONT color="green">235</FONT>                        drawItemLabel(g2, orientation, dataset, series, item, <a name="line.235"></a>
<FONT color="green">236</FONT>                                transY, transX, false);                <a name="line.236"></a>
<FONT color="green">237</FONT>                    }<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>                // setup for collecting optional entity info...<a name="line.240"></a>
<FONT color="green">241</FONT>                EntityCollection entities = null;<a name="line.241"></a>
<FONT color="green">242</FONT>                if (info != null) {<a name="line.242"></a>
<FONT color="green">243</FONT>                    entities = info.getOwner().getEntityCollection();<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>                // add an entity for the item...<a name="line.246"></a>
<FONT color="green">247</FONT>                if (entities != null) {<a name="line.247"></a>
<FONT color="green">248</FONT>                    String tip = null;<a name="line.248"></a>
<FONT color="green">249</FONT>                    XYToolTipGenerator generator <a name="line.249"></a>
<FONT color="green">250</FONT>                        = getToolTipGenerator(series, item);<a name="line.250"></a>
<FONT color="green">251</FONT>                    if (generator != null) {<a name="line.251"></a>
<FONT color="green">252</FONT>                        tip = generator.generateToolTip(dataset, series, item);<a name="line.252"></a>
<FONT color="green">253</FONT>                    }<a name="line.253"></a>
<FONT color="green">254</FONT>                    String url = null;<a name="line.254"></a>
<FONT color="green">255</FONT>                    if (getURLGenerator() != null) {<a name="line.255"></a>
<FONT color="green">256</FONT>                        url = getURLGenerator().generateURL(dataset, series, item);<a name="line.256"></a>
<FONT color="green">257</FONT>                    }<a name="line.257"></a>
<FONT color="green">258</FONT>                    XYItemEntity entity = new XYItemEntity(circle, dataset, series,<a name="line.258"></a>
<FONT color="green">259</FONT>                            item, tip, url);<a name="line.259"></a>