colorbar.html

jfreechart1。0。2的api。

<FONT color="green">182</FONT>         * @param edge  the color bar location.<a name="line.182"></a>
<FONT color="green">183</FONT>         * <a name="line.183"></a>
<FONT color="green">184</FONT>         * @return The new cursor location.<a name="line.184"></a>
<FONT color="green">185</FONT>         */<a name="line.185"></a>
<FONT color="green">186</FONT>        public double draw(Graphics2D g2, double cursor,<a name="line.186"></a>
<FONT color="green">187</FONT>                           Rectangle2D plotArea, Rectangle2D dataArea, <a name="line.187"></a>
<FONT color="green">188</FONT>                           Rectangle2D reservedArea, RectangleEdge edge) {<a name="line.188"></a>
<FONT color="green">189</FONT>    <a name="line.189"></a>
<FONT color="green">190</FONT>    <a name="line.190"></a>
<FONT color="green">191</FONT>            Rectangle2D colorBarArea = null;<a name="line.191"></a>
<FONT color="green">192</FONT>            <a name="line.192"></a>
<FONT color="green">193</FONT>            double thickness = calculateBarThickness(dataArea, edge);<a name="line.193"></a>
<FONT color="green">194</FONT>            if (this.colorBarThickness &gt; 0) {<a name="line.194"></a>
<FONT color="green">195</FONT>                thickness = this.colorBarThickness;  // allow fixed thickness<a name="line.195"></a>
<FONT color="green">196</FONT>            }<a name="line.196"></a>
<FONT color="green">197</FONT>    <a name="line.197"></a>
<FONT color="green">198</FONT>            double length = 0.0;<a name="line.198"></a>
<FONT color="green">199</FONT>            if (RectangleEdge.isLeftOrRight(edge)) {<a name="line.199"></a>
<FONT color="green">200</FONT>                length = dataArea.getHeight();<a name="line.200"></a>
<FONT color="green">201</FONT>            }<a name="line.201"></a>
<FONT color="green">202</FONT>            else {<a name="line.202"></a>
<FONT color="green">203</FONT>                length = dataArea.getWidth();<a name="line.203"></a>
<FONT color="green">204</FONT>            }<a name="line.204"></a>
<FONT color="green">205</FONT>            <a name="line.205"></a>
<FONT color="green">206</FONT>            if (this.colorBarLength &gt; 0) {<a name="line.206"></a>
<FONT color="green">207</FONT>                length = this.colorBarLength;<a name="line.207"></a>
<FONT color="green">208</FONT>            }<a name="line.208"></a>
<FONT color="green">209</FONT>    <a name="line.209"></a>
<FONT color="green">210</FONT>            if (edge == RectangleEdge.BOTTOM) {<a name="line.210"></a>
<FONT color="green">211</FONT>                colorBarArea = new Rectangle2D.Double(<a name="line.211"></a>
<FONT color="green">212</FONT>                    dataArea.getX(), plotArea.getMaxY() + this.outerGap,<a name="line.212"></a>
<FONT color="green">213</FONT>                    length, thickness<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>            else if (edge == RectangleEdge.TOP) {<a name="line.216"></a>
<FONT color="green">217</FONT>                colorBarArea = new Rectangle2D.Double(<a name="line.217"></a>
<FONT color="green">218</FONT>                    dataArea.getX(), reservedArea.getMinY() + this.outerGap,<a name="line.218"></a>
<FONT color="green">219</FONT>                    length, thickness<a name="line.219"></a>
<FONT color="green">220</FONT>                );<a name="line.220"></a>
<FONT color="green">221</FONT>            }<a name="line.221"></a>
<FONT color="green">222</FONT>            else if (edge == RectangleEdge.LEFT) {<a name="line.222"></a>
<FONT color="green">223</FONT>                colorBarArea = new Rectangle2D.Double(<a name="line.223"></a>
<FONT color="green">224</FONT>                    plotArea.getX() - thickness - this.outerGap ,<a name="line.224"></a>
<FONT color="green">225</FONT>                    dataArea.getMinY(), thickness, length<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>            else if (edge == RectangleEdge.RIGHT) {<a name="line.228"></a>
<FONT color="green">229</FONT>                colorBarArea = new Rectangle2D.Double(<a name="line.229"></a>
<FONT color="green">230</FONT>                    plotArea.getMaxX() + this.outerGap, dataArea.getMinY(),<a name="line.230"></a>
<FONT color="green">231</FONT>                    thickness, length<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>            <a name="line.234"></a>
<FONT color="green">235</FONT>            // update, but dont draw tick marks (needed for stepped colors)<a name="line.235"></a>
<FONT color="green">236</FONT>            this.axis.refreshTicks(<a name="line.236"></a>
<FONT color="green">237</FONT>                g2, new AxisState(), colorBarArea, edge<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>            drawColorBar(g2, colorBarArea, edge);<a name="line.240"></a>
<FONT color="green">241</FONT>    <a name="line.241"></a>
<FONT color="green">242</FONT>            AxisState state = null;<a name="line.242"></a>
<FONT color="green">243</FONT>            if (edge == RectangleEdge.TOP) {<a name="line.243"></a>
<FONT color="green">244</FONT>                cursor = colorBarArea.getMinY();<a name="line.244"></a>
<FONT color="green">245</FONT>                state = this.axis.draw(<a name="line.245"></a>
<FONT color="green">246</FONT>                    g2, cursor, reservedArea, colorBarArea, RectangleEdge.TOP, null<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>            else if (edge == RectangleEdge.BOTTOM) {<a name="line.249"></a>
<FONT color="green">250</FONT>                cursor = colorBarArea.getMaxY();<a name="line.250"></a>
<FONT color="green">251</FONT>                state = this.axis.draw(<a name="line.251"></a>
<FONT color="green">252</FONT>                    g2, cursor, reservedArea, colorBarArea, RectangleEdge.BOTTOM, <a name="line.252"></a>
<FONT color="green">253</FONT>                    null<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>
<FONT color="green">256</FONT>            else if (edge == RectangleEdge.LEFT) {<a name="line.256"></a>
<FONT color="green">257</FONT>                cursor = colorBarArea.getMinX();<a name="line.257"></a>
<FONT color="green">258</FONT>                state = this.axis.draw(<a name="line.258"></a>
<FONT color="green">259</FONT>                    g2, cursor, reservedArea, colorBarArea, RectangleEdge.LEFT, null<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>            else if (edge == RectangleEdge.RIGHT) {<a name="line.262"></a>
<FONT color="green">263</FONT>                cursor = colorBarArea.getMaxX();<a name="line.263"></a>
<FONT color="green">264</FONT>                state = this.axis.draw(<a name="line.264"></a>
<FONT color="green">265</FONT>                    g2, cursor, reservedArea, colorBarArea, RectangleEdge.RIGHT, <a name="line.265"></a>
<FONT color="green">266</FONT>                    null<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>            return state.getCursor();<a name="line.269"></a>
<FONT color="green">270</FONT>            <a name="line.270"></a>
<FONT color="green">271</FONT>        }<a name="line.271"></a>
<FONT color="green">272</FONT>    <a name="line.272"></a>
<FONT color="green">273</FONT>        /**<a name="line.273"></a>
<FONT color="green">274</FONT>         * Draws the plot on a Java 2D graphics device (such as the screen or a <a name="line.274"></a>
<FONT color="green">275</FONT>         * printer).<a name="line.275"></a>
<FONT color="green">276</FONT>         *<a name="line.276"></a>
<FONT color="green">277</FONT>         * @param g2  the graphics device.<a name="line.277"></a>
<FONT color="green">278</FONT>         * @param colorBarArea  the area within which the axis should be drawn.<a name="line.278"></a>
<FONT color="green">279</FONT>         * @param edge  the location.<a name="line.279"></a>
<FONT color="green">280</FONT>         */<a name="line.280"></a>
<FONT color="green">281</FONT>        public void drawColorBar(Graphics2D g2, Rectangle2D colorBarArea, <a name="line.281"></a>
<FONT color="green">282</FONT>                                 RectangleEdge edge) {<a name="line.282"></a>
<FONT color="green">283</FONT>    <a name="line.283"></a>
<FONT color="green">284</FONT>            Object antiAlias = g2.getRenderingHint(RenderingHints.KEY_ANTIALIASING);<a name="line.284"></a>
<FONT color="green">285</FONT>            g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,<a name="line.285"></a>
<FONT color="green">286</FONT>                                RenderingHints.VALUE_ANTIALIAS_OFF);<a name="line.286"></a>
<FONT color="green">287</FONT>    <a name="line.287"></a>
<FONT color="green">288</FONT>            // setTickValues was missing from ColorPalette v. 0.96<a name="line.288"></a>
<FONT color="green">289</FONT>            //colorPalette.setTickValues(this.axis.getTicks());<a name="line.289"></a>
<FONT color="green">290</FONT>    <a name="line.290"></a>
<FONT color="green">291</FONT>            Stroke strokeSaved = g2.getStroke();<a name="line.291"></a>
<FONT color="green">292</FONT>            g2.setStroke(new BasicStroke(1.0f));<a name="line.292"></a>
<FONT color="green">293</FONT>    <a name="line.293"></a>
<FONT color="green">294</FONT>            if (RectangleEdge.isTopOrBottom(edge)) {<a name="line.294"></a>
<FONT color="green">295</FONT>                double y1 = colorBarArea.getY();<a name="line.295"></a>
<FONT color="green">296</FONT>                double y2 = colorBarArea.getMaxY();<a name="line.296"></a>
<FONT color="green">297</FONT>                double xx = colorBarArea.getX();<a name="line.297"></a>
<FONT color="green">298</FONT>                Line2D line = new Line2D.Double();<a name="line.298"></a>
<FONT color="green">299</FONT>                while (xx &lt;= colorBarArea.getMaxX()) {<a name="line.299"></a>
<FONT color="green">300</FONT>                    double value = this.axis.java2DToValue(xx, colorBarArea, edge);<a name="line.300"></a>
<FONT color="green">301</FONT>                    line.setLine(xx, y1, xx, y2);<a name="line.301"></a>
<FONT color="green">302</FONT>                    g2.setPaint(getPaint(value));<a name="line.302"></a>
<FONT color="green">303</FONT>                    g2.draw(line);<a name="line.303"></a>
<FONT color="green">304</FONT>                    xx += 1;<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>            else {<a name="line.307"></a>
<FONT color="green">308</FONT>                double y1 = colorBarArea.getX();<a name="line.308"></a>
<FONT color="green">309</FONT>                double y2 = colorBarArea.getMaxX();<a name="line.309"></a>
<FONT color="green">310</FONT>                double xx = colorBarArea.getY();<a name="line.310"></a>
<FONT color="green">311</FONT>                Line2D line = new Line2D.Double();<a name="line.311"></a>
<FONT color="green">312</FONT>                while (xx &lt;= colorBarArea.getMaxY()) {<a name="line.312"></a>
<FONT color="green">313</FONT>                    double value = this.axis.java2DToValue(xx, colorBarArea, edge);<a name="line.313"></a>
<FONT color="green">314</FONT>                    line.setLine(y1, xx, y2, xx);<a name="line.314"></a>
<FONT color="green">315</FONT>                    g2.setPaint(getPaint(value));<a name="line.315"></a>
<FONT color="green">316</FONT>                    g2.draw(line);<a name="line.316"></a>
<FONT color="green">317</FONT>                    xx += 1;<a name="line.317"></a>
<FONT color="green">318</FONT>                }            <a name="line.318"></a>
<FONT color="green">319</FONT>            }<a name="line.319"></a>
<FONT color="green">320</FONT>    <a name="line.320"></a>
<FONT color="green">321</FONT>            g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, antiAlias);<a name="line.321"></a>
<FONT color="green">322</FONT>            g2.setStroke(strokeSaved);<a name="line.322"></a>
<FONT color="green">323</FONT>    <a name="line.323"></a>
<FONT color="green">324</FONT>        }<a name="line.324"></a>
<FONT color="green">325</FONT>    <a name="line.325"></a>
<FONT color="green">326</FONT>        /**<a name="line.326"></a>
<FONT color="green">327</FONT>         * Returns the color palette.<a name="line.327"></a>
<FONT color="green">328</FONT>         *<a name="line.328"></a>
<FONT color="green">329</FONT>         * @return The color palette.<a name="line.329"></a>
<FONT color="green">330</FONT>         */<a name="line.330"></a>
<FONT color="green">331</FONT>        public ColorPalette getColorPalette() {<a name="line.331"></a>
<FONT color="green">332</FONT>            return this.colorPalette;<a name="line.332"></a>
<FONT color="green">333</FONT>        }<a name="line.333"></a>
<FONT color="green">334</FONT>    <a name="line.334"></a>
<FONT color="green">335</FONT>        /**<a name="line.335"></a>
<FONT color="green">336</FONT>         * Returns the Paint associated with a value.<a name="line.336"></a>
<FONT color="green">337</FONT>         *<a name="line.337"></a>
<FONT color="green">338</FONT>         * @param value  the value.<a name="line.338"></a>
<FONT color="green">339</FONT>         *<a name="line.339"></a>
<FONT color="green">340</FONT>         * @return The paint.<a name="line.340"></a>
<FONT color="green">341</FONT>         */<a name="line.341"></a>
<FONT color="green">342</FONT>        public Paint getPaint(double value) {<a name="line.342"></a>
<FONT color="green">343</FONT>            return this.colorPalette.getPaint(value);<a name="line.343"></a>
<FONT color="green">344</FONT>        }<a name="line.344"></a>
<FONT color="green">345</FONT>    <a name="line.345"></a>
<FONT color="green">346</FONT>        /**<a name="line.346"></a>
<FONT color="green">347</FONT>         * Sets the color palette.<a name="line.347"></a>
<FONT color="green">348</FONT>         *<a name="line.348"></a>
<FONT color="green">349</FONT>         * @param palette  the new palette.<a name="line.349"></a>
<FONT color="green">350</FONT>         */<a name="line.350"></a>
<FONT color="green">351</FONT>        public void setColorPalette(ColorPalette palette) {<a name="line.351"></a>
<FONT color="green">352</FONT>            this.colorPalette = palette;<a name="line.352"></a>
<FONT color="green">353</FONT>        }<a name="line.353"></a>
<FONT color="green">354</FONT>    <a name="line.354"></a>
<FONT color="green">355</FONT>        /**<a name="line.355"></a>
<FONT color="green">356</FONT>         * Sets the maximum value.<a name="line.356"></a>
<FONT color="green">357</FONT>         *<a name="line.357"></a>
<FONT color="green">358</FONT>         * @param value  the maximum value.<a name="line.358"></a>
<FONT color="green">359</FONT>         */<a name="line.359"></a>
<FONT color="green">360</FONT>        public void setMaximumValue(double value) {<a name="line.360"></a>
<FONT color="green">361</FONT>            this.colorPalette.setMaxZ(value);<a name="line.361"></a>
<FONT color="green">362</FONT>            this.axis.setUpperBound(value);<a name="line.362"></a>
<FONT color="green">363</FONT>        }<a name="line.363"></a>
<FONT color="green">364</FONT>    <a name="line.364"></a>
<FONT color="green">365</FONT>        /**<a name="line.365"></a>