📄 jfreechart.html
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<FONT color="green">280</FONT> private transient Image backgroundImage; // todo: not serialized yet<a name="line.280"></a><FONT color="green">281</FONT> <a name="line.281"></a><FONT color="green">282</FONT> /** The alignment for the background image. */<a name="line.282"></a><FONT color="green">283</FONT> private int backgroundImageAlignment = Align.FIT;<a name="line.283"></a><FONT color="green">284</FONT> <a name="line.284"></a><FONT color="green">285</FONT> /** The alpha transparency for the background image. */<a name="line.285"></a><FONT color="green">286</FONT> private float backgroundImageAlpha = 0.5f;<a name="line.286"></a><FONT color="green">287</FONT> <a name="line.287"></a><FONT color="green">288</FONT> /** Storage for registered change listeners. */<a name="line.288"></a><FONT color="green">289</FONT> private transient EventListenerList changeListeners;<a name="line.289"></a><FONT color="green">290</FONT> <a name="line.290"></a><FONT color="green">291</FONT> /** Storage for registered progress listeners. */<a name="line.291"></a><FONT color="green">292</FONT> private transient EventListenerList progressListeners;<a name="line.292"></a><FONT color="green">293</FONT> <a name="line.293"></a><FONT color="green">294</FONT> /** <a name="line.294"></a><FONT color="green">295</FONT> * A flag that can be used to enable/disable notification of chart change <a name="line.295"></a><FONT color="green">296</FONT> * events. <a name="line.296"></a><FONT color="green">297</FONT> */<a name="line.297"></a><FONT color="green">298</FONT> private boolean notify;<a name="line.298"></a><FONT color="green">299</FONT> <a name="line.299"></a><FONT color="green">300</FONT> /**<a name="line.300"></a><FONT color="green">301</FONT> * Creates a new chart based on the supplied plot. The chart will have<a name="line.301"></a><FONT color="green">302</FONT> * a legend added automatically, but no title (although you can easily add<a name="line.302"></a><FONT color="green">303</FONT> * one later). <a name="line.303"></a><FONT color="green">304</FONT> * <br><br><a name="line.304"></a><FONT color="green">305</FONT> * Note that the {@link ChartFactory} class contains a range <a name="line.305"></a><FONT color="green">306</FONT> * of static methods that will return ready-made charts, and often this<a name="line.306"></a><FONT color="green">307</FONT> * is a more convenient way to create charts than using this constructor.<a name="line.307"></a><FONT color="green">308</FONT> *<a name="line.308"></a><FONT color="green">309</FONT> * @param plot the plot (<code>null</code> not permitted).<a name="line.309"></a><FONT color="green">310</FONT> */<a name="line.310"></a><FONT color="green">311</FONT> public JFreeChart(Plot plot) {<a name="line.311"></a><FONT color="green">312</FONT> this(null, null, plot, true);<a name="line.312"></a><FONT color="green">313</FONT> }<a name="line.313"></a><FONT color="green">314</FONT> <a name="line.314"></a><FONT color="green">315</FONT> /**<a name="line.315"></a><FONT color="green">316</FONT> * Creates a new chart with the given title and plot. A default font <a name="line.316"></a><FONT color="green">317</FONT> * (@link DEFAULT_TITLE_FONT) is used for the title, and the chart will <a name="line.317"></a><FONT color="green">318</FONT> * have a legend added automatically. <a name="line.318"></a><FONT color="green">319</FONT> * <br><br><a name="line.319"></a><FONT color="green">320</FONT> * Note that the {@link ChartFactory} class contains a range <a name="line.320"></a><FONT color="green">321</FONT> * of static methods that will return ready-made charts, and often this<a name="line.321"></a><FONT color="green">322</FONT> * is a more convenient way to create charts than using this constructor.<a name="line.322"></a><FONT color="green">323</FONT> *<a name="line.323"></a><FONT color="green">324</FONT> * @param title the chart title (<code>null</code> permitted).<a name="line.324"></a><FONT color="green">325</FONT> * @param plot the plot (<code>null</code> not permitted).<a name="line.325"></a><FONT color="green">326</FONT> */<a name="line.326"></a><FONT color="green">327</FONT> public JFreeChart(String title, Plot plot) {<a name="line.327"></a><FONT color="green">328</FONT> this(title, JFreeChart.DEFAULT_TITLE_FONT, plot, true);<a name="line.328"></a><FONT color="green">329</FONT> }<a name="line.329"></a><FONT color="green">330</FONT> <a name="line.330"></a><FONT color="green">331</FONT> /**<a name="line.331"></a><FONT color="green">332</FONT> * Creates a new chart with the given title and plot. The <a name="line.332"></a><FONT color="green">333</FONT> * <code>createLegend</code> argument specifies whether or not a legend<a name="line.333"></a><FONT color="green">334</FONT> * should be added to the chart. <a name="line.334"></a><FONT color="green">335</FONT> * <br><br><a name="line.335"></a><FONT color="green">336</FONT> * Note that the {@link ChartFactory} class contains a range <a name="line.336"></a><FONT color="green">337</FONT> * of static methods that will return ready-made charts, and often this<a name="line.337"></a><FONT color="green">338</FONT> * is a more convenient way to create charts than using this constructor.<a name="line.338"></a><FONT color="green">339</FONT> *<a name="line.339"></a><FONT color="green">340</FONT> * @param title the chart title (<code>null</code> permitted).<a name="line.340"></a><FONT color="green">341</FONT> * @param titleFont the font for displaying the chart title <a name="line.341"></a><FONT color="green">342</FONT> * (<code>null</code> permitted).<a name="line.342"></a><FONT color="green">343</FONT> * @param plot controller of the visual representation of the data <a name="line.343"></a><FONT color="green">344</FONT> * (<code>null</code> not permitted).<a name="line.344"></a><FONT color="green">345</FONT> * @param createLegend a flag indicating whether or not a legend should <a name="line.345"></a><FONT color="green">346</FONT> * be created for the chart.<a name="line.346"></a><FONT color="green">347</FONT> */<a name="line.347"></a><FONT color="green">348</FONT> public JFreeChart(String title, Font titleFont, Plot plot, <a name="line.348"></a><FONT color="green">349</FONT> boolean createLegend) {<a name="line.349"></a><FONT color="green">350</FONT> <a name="line.350"></a><FONT color="green">351</FONT> if (plot == null) {<a name="line.351"></a><FONT color="green">352</FONT> throw new NullPointerException("Null 'plot' argument.");<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> // create storage for listeners...<a name="line.355"></a><FONT color="green">356</FONT> this.progressListeners = new EventListenerList();<a name="line.356"></a><FONT color="green">357</FONT> this.changeListeners = new EventListenerList();<a name="line.357"></a><FONT color="green">358</FONT> this.notify = true; // default is to notify listeners when the <a name="line.358"></a><FONT color="green">359</FONT> // chart changes<a name="line.359"></a><FONT color="green">360</FONT> <a name="line.360"></a><FONT color="green">361</FONT> this.renderingHints = new RenderingHints(<a name="line.361"></a><FONT color="green">362</FONT> RenderingHints.KEY_ANTIALIASING, <a name="line.362"></a><FONT color="green">363</FONT> RenderingHints.VALUE_ANTIALIAS_ON);<a name="line.363"></a><FONT color="green">364</FONT> <a name="line.364"></a><FONT color="green">365</FONT> this.borderVisible = false;<a name="line.365"></a><FONT color="green">366</FONT> this.borderStroke = new BasicStroke(1.0f);<a name="line.366"></a><FONT color="green">367</FONT> this.borderPaint = Color.black;<a name="line.367"></a><FONT color="green">368</FONT> <a name="line.368"></a><FONT color="green">369</FONT> this.padding = RectangleInsets.ZERO_INSETS;<a name="line.369"></a><FONT color="green">370</FONT> <a name="line.370"></a><FONT color="green">371</FONT> this.plot = plot;<a name="line.371"></a><FONT color="green">372</FONT> plot.addChangeListener(this);<a name="line.372"></a><FONT color="green">373</FONT> <a name="line.373"></a><FONT color="green">374</FONT> this.subtitles = new ArrayList();<a name="line.374"></a><FONT color="green">375</FONT> <a name="line.375"></a><FONT color="green">376</FONT> // create a legend, if requested...<a name="line.376"></a><FONT color="green">377</FONT> if (createLegend) {<a name="line.377"></a><FONT color="green">378</FONT> LegendTitle legend = new LegendTitle(this.plot);<a name="line.378"></a><FONT color="green">379</FONT> legend.setMargin(new RectangleInsets(1.0, 1.0, 1.0, 1.0));<a name="line.379"></a><FONT color="green">380</FONT> legend.setBorder(new BlockBorder());<a name="line.380"></a><FONT color="green">381</FONT> legend.setBackgroundPaint(Color.white);<a name="line.381"></a><FONT color="green">382</FONT> legend.setPosition(RectangleEdge.BOTTOM);<a name="line.382"></a><FONT color="green">383</FONT> this.subtitles.add(legend);<a name="line.383"></a><FONT color="green">384</FONT> }<a name="line.384"></a><FONT color="green">385</FONT> <a name="line.385"></a><FONT color="green">386</FONT> // add the chart title, if one has been specified...<a name="line.386"></a><FONT color="green">387</FONT> if (title != null) {<a name="line.387"></a><FONT color="green">388</FONT> if (titleFont == null) {<a name="line.388"></a><FONT color="green">389</FONT> titleFont = DEFAULT_TITLE_FONT;<a name="line.389"></a><FONT color="green">390</FONT> }<a name="line.390"></a><FONT color="green">391</FONT> this.title = new TextTitle(title, titleFont);<a name="line.391"></a><FONT color="green">392</FONT> this.title.addChangeListener(this);<a name="line.392"></a><FONT color="green">393</FONT> }<a name="line.393"></a><FONT color="green">394</FONT> <a name="line.394"></a><FONT color="green">395</FONT> this.backgroundPaint = DEFAULT_BACKGROUND_PAINT;<a name="line.395"></a><FONT color="green">396</FONT> <a name="line.396"></a><FONT color="green">397</FONT> this.backgroundImage = DEFAULT_BACKGROUND_IMAGE;<a name="line.397"></a><FONT color="green">398</FONT> this.backgroundImageAlignment = DEFAULT_BACKGROUND_IMAGE_ALIGNMENT;<a name="line.398"></a><FONT color="green">399</FONT> this.backgroundImageAlpha = DEFAULT_BACKGROUND_IMAGE_ALPHA;<a name="line.399"></a><FONT color="green">400</FONT> <a name="line.400"></a><FONT color="green">401</FONT> }<a name="line.401"></a><FONT color="green">402</FONT> <a name="line.402"></a><FONT color="green">403</FONT> /**<a name="line.403"></a><FONT color="green">404</FONT> * Returns the collection of rendering hints for the chart.<a name="line.404"></a><FONT color="green">405</FONT> *<a name="line.405"></a><FONT color="green">406</FONT> * @return The rendering hints for the chart (never <code>null</code>).<a name="line.406"></a><FONT color="green">407</FONT> */<a name="line.407"></a><FONT color="green">408</FONT> public RenderingHints getRenderingHints() {<a name="line.408"></a><FONT color="green">409</FONT> return this.renderingHints;<a name="line.409"></a><FONT color="green">410</FONT> }<a name="line.410"></a><FONT color="green">411</FONT> <a name="line.411"></a><FONT color="green">412</FONT> /**<a name="line.412"></a><FONT color="green">413</FONT> * Sets the rendering hints for the chart. These will be added (using the <a name="line.413"></a><FONT color="green">414</FONT> * Graphics2D.addRenderingHints() method) near the start of the <a name="line.414"></a><FONT color="green">415</FONT> * JFreeChart.draw() method.<a name="line.415"></a><FONT color="green">416</FONT> *<a name="line.416"></a><FONT color="green">417</FONT> * @param renderingHints the rendering hints (<code>null</code> not <a name="line.417"></a><FONT color="green">418</FONT> * permitted).<a name="line.418"></a><FONT color="green">419</FONT> */<a name="line.419"></a><FONT color="green">420</FONT> public void setRenderingHints(RenderingHints renderingHints) {<a name="line.420"></a>⌨️ 快捷键说明
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