categoryitemrenderer.html

jfreechart1。0。2的api。

<FONT color="green">138</FONT>    <a name="line.138"></a>
<FONT color="green">139</FONT>        /**<a name="line.139"></a>
<FONT color="green">140</FONT>         * Returns the number of passes through the dataset required by the <a name="line.140"></a>
<FONT color="green">141</FONT>         * renderer.  Usually this will be one, but some renderers may use<a name="line.141"></a>
<FONT color="green">142</FONT>         * a second or third pass to overlay items on top of things that were<a name="line.142"></a>
<FONT color="green">143</FONT>         * drawn in an earlier pass.<a name="line.143"></a>
<FONT color="green">144</FONT>         * <a name="line.144"></a>
<FONT color="green">145</FONT>         * @return The pass count.<a name="line.145"></a>
<FONT color="green">146</FONT>         */<a name="line.146"></a>
<FONT color="green">147</FONT>        public int getPassCount();<a name="line.147"></a>
<FONT color="green">148</FONT>    <a name="line.148"></a>
<FONT color="green">149</FONT>        /**<a name="line.149"></a>
<FONT color="green">150</FONT>         * Returns the plot that the renderer has been assigned to (where <a name="line.150"></a>
<FONT color="green">151</FONT>         * &lt;code&gt;null&lt;/code&gt; indicates that the renderer is not currently assigned <a name="line.151"></a>
<FONT color="green">152</FONT>         * to a plot).<a name="line.152"></a>
<FONT color="green">153</FONT>         *<a name="line.153"></a>
<FONT color="green">154</FONT>         * @return The plot (possibly &lt;code&gt;null&lt;/code&gt;).<a name="line.154"></a>
<FONT color="green">155</FONT>         */<a name="line.155"></a>
<FONT color="green">156</FONT>        public CategoryPlot getPlot();<a name="line.156"></a>
<FONT color="green">157</FONT>    <a name="line.157"></a>
<FONT color="green">158</FONT>        /**<a name="line.158"></a>
<FONT color="green">159</FONT>         * Sets the plot that the renderer has been assigned to.  This method is <a name="line.159"></a>
<FONT color="green">160</FONT>         * usually called by the {@link CategoryPlot}, in normal usage you <a name="line.160"></a>
<FONT color="green">161</FONT>         * shouldn't need to call this method directly.<a name="line.161"></a>
<FONT color="green">162</FONT>         *<a name="line.162"></a>
<FONT color="green">163</FONT>         * @param plot  the plot (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.163"></a>
<FONT color="green">164</FONT>         */<a name="line.164"></a>
<FONT color="green">165</FONT>        public void setPlot(CategoryPlot plot);<a name="line.165"></a>
<FONT color="green">166</FONT>    <a name="line.166"></a>
<FONT color="green">167</FONT>        /**<a name="line.167"></a>
<FONT color="green">168</FONT>         * Adds a change listener.<a name="line.168"></a>
<FONT color="green">169</FONT>         * <a name="line.169"></a>
<FONT color="green">170</FONT>         * @param listener  the listener.<a name="line.170"></a>
<FONT color="green">171</FONT>         */<a name="line.171"></a>
<FONT color="green">172</FONT>        public void addChangeListener(RendererChangeListener listener);<a name="line.172"></a>
<FONT color="green">173</FONT>        <a name="line.173"></a>
<FONT color="green">174</FONT>        /**<a name="line.174"></a>
<FONT color="green">175</FONT>         * Removes a change listener.<a name="line.175"></a>
<FONT color="green">176</FONT>         * <a name="line.176"></a>
<FONT color="green">177</FONT>         * @param listener  the listener.<a name="line.177"></a>
<FONT color="green">178</FONT>         */<a name="line.178"></a>
<FONT color="green">179</FONT>        public void removeChangeListener(RendererChangeListener listener);<a name="line.179"></a>
<FONT color="green">180</FONT>    <a name="line.180"></a>
<FONT color="green">181</FONT>        /**<a name="line.181"></a>
<FONT color="green">182</FONT>         * Returns the range of values the renderer requires to display all the <a name="line.182"></a>
<FONT color="green">183</FONT>         * items from the specified dataset.<a name="line.183"></a>
<FONT color="green">184</FONT>         * <a name="line.184"></a>
<FONT color="green">185</FONT>         * @param dataset  the dataset (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.185"></a>
<FONT color="green">186</FONT>         * <a name="line.186"></a>
<FONT color="green">187</FONT>         * @return The range (or &lt;code&gt;null&lt;/code&gt; if the dataset is <a name="line.187"></a>
<FONT color="green">188</FONT>         *         &lt;code&gt;null&lt;/code&gt; or empty).<a name="line.188"></a>
<FONT color="green">189</FONT>         */<a name="line.189"></a>
<FONT color="green">190</FONT>        public Range findRangeBounds(CategoryDataset dataset);<a name="line.190"></a>
<FONT color="green">191</FONT>        <a name="line.191"></a>
<FONT color="green">192</FONT>        /**<a name="line.192"></a>
<FONT color="green">193</FONT>         * Initialises the renderer.  This method will be called before the first <a name="line.193"></a>
<FONT color="green">194</FONT>         * item is rendered, giving the renderer an opportunity to initialise any <a name="line.194"></a>
<FONT color="green">195</FONT>         * state information it wants to maintain. The renderer can do nothing if <a name="line.195"></a>
<FONT color="green">196</FONT>         * it chooses.<a name="line.196"></a>
<FONT color="green">197</FONT>         *<a name="line.197"></a>
<FONT color="green">198</FONT>         * @param g2  the graphics device.<a name="line.198"></a>
<FONT color="green">199</FONT>         * @param dataArea  the area inside the axes.<a name="line.199"></a>
<FONT color="green">200</FONT>         * @param plot  the plot.<a name="line.200"></a>
<FONT color="green">201</FONT>         * @param rendererIndex  the renderer index.<a name="line.201"></a>
<FONT color="green">202</FONT>         * @param info  collects chart rendering information for return to caller.<a name="line.202"></a>
<FONT color="green">203</FONT>         * <a name="line.203"></a>
<FONT color="green">204</FONT>         * @return A state object (maintains state information relevant to one <a name="line.204"></a>
<FONT color="green">205</FONT>         *         chart drawing).<a name="line.205"></a>
<FONT color="green">206</FONT>         */<a name="line.206"></a>
<FONT color="green">207</FONT>        public CategoryItemRendererState initialise(Graphics2D g2,<a name="line.207"></a>
<FONT color="green">208</FONT>                                                    Rectangle2D dataArea,<a name="line.208"></a>
<FONT color="green">209</FONT>                                                    CategoryPlot plot,<a name="line.209"></a>
<FONT color="green">210</FONT>                                                    int rendererIndex,<a name="line.210"></a>
<FONT color="green">211</FONT>                                                    PlotRenderingInfo info);<a name="line.211"></a>
<FONT color="green">212</FONT>                               <a name="line.212"></a>
<FONT color="green">213</FONT>        /**<a name="line.213"></a>
<FONT color="green">214</FONT>         * Returns a boolean that indicates whether or not the specified item <a name="line.214"></a>
<FONT color="green">215</FONT>         * should be drawn (this is typically used to hide an entire series).<a name="line.215"></a>
<FONT color="green">216</FONT>         * <a name="line.216"></a>
<FONT color="green">217</FONT>         * @param series  the series index.<a name="line.217"></a>
<FONT color="green">218</FONT>         * @param item  the item index.<a name="line.218"></a>
<FONT color="green">219</FONT>         * <a name="line.219"></a>
<FONT color="green">220</FONT>         * @return A boolean.<a name="line.220"></a>
<FONT color="green">221</FONT>         */<a name="line.221"></a>
<FONT color="green">222</FONT>        public boolean getItemVisible(int series, int item);<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>         * Returns a boolean that indicates whether or not the specified series <a name="line.225"></a>
<FONT color="green">226</FONT>         * should be drawn (this is typically used to hide an entire series).<a name="line.226"></a>
<FONT color="green">227</FONT>         * <a name="line.227"></a>
<FONT color="green">228</FONT>         * @param series  the series index.<a name="line.228"></a>
<FONT color="green">229</FONT>         * <a name="line.229"></a>
<FONT color="green">230</FONT>         * @return A boolean.<a name="line.230"></a>
<FONT color="green">231</FONT>         */<a name="line.231"></a>
<FONT color="green">232</FONT>        public boolean isSeriesVisible(int series);<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>         * Returns the flag that controls the visibility of ALL series.  This flag <a name="line.235"></a>
<FONT color="green">236</FONT>         * overrides the per series and default settings - you must set it to <a name="line.236"></a>
<FONT color="green">237</FONT>         * &lt;code&gt;null&lt;/code&gt; if you want the other settings to apply.<a name="line.237"></a>
<FONT color="green">238</FONT>         * <a name="line.238"></a>
<FONT color="green">239</FONT>         * @return The flag (possibly &lt;code&gt;null&lt;/code&gt;).<a name="line.239"></a>
<FONT color="green">240</FONT>         */<a name="line.240"></a>
<FONT color="green">241</FONT>        public Boolean getSeriesVisible();<a name="line.241"></a>
<FONT color="green">242</FONT>        <a name="line.242"></a>
<FONT color="green">243</FONT>        /**<a name="line.243"></a>
<FONT color="green">244</FONT>         * Sets the flag that controls the visibility of ALL series and sends a <a name="line.244"></a>
<FONT color="green">245</FONT>         * {@link RendererChangeEvent} to all registered listeners.  This flag <a name="line.245"></a>
<FONT color="green">246</FONT>         * overrides the per series and default settings - you must set it to <a name="line.246"></a>
<FONT color="green">247</FONT>         * &lt;code&gt;null&lt;/code&gt; if you want the other settings to apply.<a name="line.247"></a>
<FONT color="green">248</FONT>         * <a name="line.248"></a>
<FONT color="green">249</FONT>         * @param visible  the flag (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.249"></a>
<FONT color="green">250</FONT>         */<a name="line.250"></a>
<FONT color="green">251</FONT>        public void setSeriesVisible(Boolean visible);<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>         * Sets the flag that controls the visibility of ALL series and sends a <a name="line.254"></a>
<FONT color="green">255</FONT>         * {@link RendererChangeEvent} to all registered listeners.  This flag <a name="line.255"></a>
<FONT color="green">256</FONT>         * overrides the per series and default settings - you must set it to <a name="line.256"></a>
<FONT color="green">257</FONT>         * &lt;code&gt;null&lt;/code&gt; if you want the other settings to apply.<a name="line.257"></a>
<FONT color="green">258</FONT>         * <a name="line.258"></a>
<FONT color="green">259</FONT>         * @param visible  the flag (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.259"></a>
<FONT color="green">260</FONT>         * @param notify  notify listeners?<a name="line.260"></a>
<FONT color="green">261</FONT>         */<a name="line.261"></a>
<FONT color="green">262</FONT>        public void setSeriesVisible(Boolean visible, boolean notify);<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>         * Returns the flag that controls whether a series is visible.<a name="line.265"></a>
<FONT color="green">266</FONT>         *<a name="line.266"></a>
<FONT color="green">267</FONT>         * @param series  the series index (zero-based).<a name="line.267"></a>
<FONT color="green">268</FONT>         *<a name="line.268"></a>
<FONT color="green">269</FONT>         * @return The flag (possibly &lt;code&gt;null&lt;/code&gt;).<a name="line.269"></a>
<FONT color="green">270</FONT>         */<a name="line.270"></a>
<FONT color="green">271</FONT>        public Boolean getSeriesVisible(int series);<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>         * Sets the flag that controls whether a series is visible and sends a <a name="line.274"></a>
<FONT color="green">275</FONT>         * {@link RendererChangeEvent} to all registered listeners.<a name="line.275"></a>
<FONT color="green">276</FONT>         *<a name="line.276"></a>
<FONT color="green">277</FONT>         * @param series  the series index (zero-based).<a name="line.277"></a>