standardxyitemrenderer.state.html

jfreechart1。0。2的api。

<FONT color="green">574</FONT>            }<a name="line.574"></a>
<FONT color="green">575</FONT>            return result;<a name="line.575"></a>
<FONT color="green">576</FONT>        }<a name="line.576"></a>
<FONT color="green">577</FONT>    <a name="line.577"></a>
<FONT color="green">578</FONT>        /**<a name="line.578"></a>
<FONT color="green">579</FONT>         * Records the state for the renderer.  This is used to preserve state <a name="line.579"></a>
<FONT color="green">580</FONT>         * information between calls to the drawItem() method for a single chart <a name="line.580"></a>
<FONT color="green">581</FONT>         * drawing.<a name="line.581"></a>
<FONT color="green">582</FONT>         */<a name="line.582"></a>
<FONT color="green">583</FONT>        public static class State extends XYItemRendererState {<a name="line.583"></a>
<FONT color="green">584</FONT>            <a name="line.584"></a>
<FONT color="green">585</FONT>            /** The path for the current series. */<a name="line.585"></a>
<FONT color="green">586</FONT>            public GeneralPath seriesPath;<a name="line.586"></a>
<FONT color="green">587</FONT>            <a name="line.587"></a>
<FONT color="green">588</FONT>            /** The series index. */<a name="line.588"></a>
<FONT color="green">589</FONT>            private int seriesIndex;<a name="line.589"></a>
<FONT color="green">590</FONT>            <a name="line.590"></a>
<FONT color="green">591</FONT>            /** <a name="line.591"></a>
<FONT color="green">592</FONT>             * A flag that indicates if the last (x, y) point was 'good' <a name="line.592"></a>
<FONT color="green">593</FONT>             * (non-null). <a name="line.593"></a>
<FONT color="green">594</FONT>             */<a name="line.594"></a>
<FONT color="green">595</FONT>            private boolean lastPointGood;<a name="line.595"></a>
<FONT color="green">596</FONT>            <a name="line.596"></a>
<FONT color="green">597</FONT>            /**<a name="line.597"></a>
<FONT color="green">598</FONT>             * Creates a new state instance.<a name="line.598"></a>
<FONT color="green">599</FONT>             * <a name="line.599"></a>
<FONT color="green">600</FONT>             * @param info  the plot rendering info.<a name="line.600"></a>
<FONT color="green">601</FONT>             */<a name="line.601"></a>
<FONT color="green">602</FONT>            public State(PlotRenderingInfo info) {<a name="line.602"></a>
<FONT color="green">603</FONT>                super(info);<a name="line.603"></a>
<FONT color="green">604</FONT>            }<a name="line.604"></a>
<FONT color="green">605</FONT>            <a name="line.605"></a>
<FONT color="green">606</FONT>            /**<a name="line.606"></a>
<FONT color="green">607</FONT>             * Returns a flag that indicates if the last point drawn (in the <a name="line.607"></a>
<FONT color="green">608</FONT>             * current series) was 'good' (non-null).<a name="line.608"></a>
<FONT color="green">609</FONT>             * <a name="line.609"></a>
<FONT color="green">610</FONT>             * @return A boolean.<a name="line.610"></a>
<FONT color="green">611</FONT>             */<a name="line.611"></a>
<FONT color="green">612</FONT>            public boolean isLastPointGood() {<a name="line.612"></a>
<FONT color="green">613</FONT>                return this.lastPointGood;<a name="line.613"></a>
<FONT color="green">614</FONT>            }<a name="line.614"></a>
<FONT color="green">615</FONT>            <a name="line.615"></a>
<FONT color="green">616</FONT>            /**<a name="line.616"></a>
<FONT color="green">617</FONT>             * Sets a flag that indicates if the last point drawn (in the current <a name="line.617"></a>
<FONT color="green">618</FONT>             * series) was 'good' (non-null).<a name="line.618"></a>
<FONT color="green">619</FONT>             * <a name="line.619"></a>
<FONT color="green">620</FONT>             * @param good  the flag.<a name="line.620"></a>
<FONT color="green">621</FONT>             */<a name="line.621"></a>
<FONT color="green">622</FONT>            public void setLastPointGood(boolean good) {<a name="line.622"></a>
<FONT color="green">623</FONT>                this.lastPointGood = good;<a name="line.623"></a>
<FONT color="green">624</FONT>            }<a name="line.624"></a>
<FONT color="green">625</FONT>            <a name="line.625"></a>
<FONT color="green">626</FONT>            /**<a name="line.626"></a>
<FONT color="green">627</FONT>             * Returns the series index for the current path.<a name="line.627"></a>
<FONT color="green">628</FONT>             * <a name="line.628"></a>
<FONT color="green">629</FONT>             * @return The series index for the current path.<a name="line.629"></a>
<FONT color="green">630</FONT>             */<a name="line.630"></a>
<FONT color="green">631</FONT>            public int getSeriesIndex() {<a name="line.631"></a>
<FONT color="green">632</FONT>                return seriesIndex;<a name="line.632"></a>
<FONT color="green">633</FONT>            }<a name="line.633"></a>
<FONT color="green">634</FONT>            <a name="line.634"></a>
<FONT color="green">635</FONT>            /**<a name="line.635"></a>
<FONT color="green">636</FONT>             * Sets the series index for the current path.<a name="line.636"></a>
<FONT color="green">637</FONT>             * <a name="line.637"></a>
<FONT color="green">638</FONT>             * @param index  the index.<a name="line.638"></a>
<FONT color="green">639</FONT>             */<a name="line.639"></a>
<FONT color="green">640</FONT>            public void setSeriesIndex(int index) {<a name="line.640"></a>
<FONT color="green">641</FONT>                this.seriesIndex = index;<a name="line.641"></a>
<FONT color="green">642</FONT>            }<a name="line.642"></a>
<FONT color="green">643</FONT>        }<a name="line.643"></a>
<FONT color="green">644</FONT>        <a name="line.644"></a>
<FONT color="green">645</FONT>        /**<a name="line.645"></a>
<FONT color="green">646</FONT>         * Initialises the renderer.<a name="line.646"></a>
<FONT color="green">647</FONT>         * &lt;P&gt;<a name="line.647"></a>
<FONT color="green">648</FONT>         * This method will be called before the first item is rendered, giving the<a name="line.648"></a>
<FONT color="green">649</FONT>         * renderer an opportunity to initialise any state information it wants to <a name="line.649"></a>
<FONT color="green">650</FONT>         * maintain. The renderer can do nothing if it chooses.<a name="line.650"></a>
<FONT color="green">651</FONT>         *<a name="line.651"></a>
<FONT color="green">652</FONT>         * @param g2  the graphics device.<a name="line.652"></a>
<FONT color="green">653</FONT>         * @param dataArea  the area inside the axes.<a name="line.653"></a>
<FONT color="green">654</FONT>         * @param plot  the plot.<a name="line.654"></a>
<FONT color="green">655</FONT>         * @param data  the data.<a name="line.655"></a>
<FONT color="green">656</FONT>         * @param info  an optional info collection object to return data back to <a name="line.656"></a>
<FONT color="green">657</FONT>         *              the caller.<a name="line.657"></a>
<FONT color="green">658</FONT>         *<a name="line.658"></a>
<FONT color="green">659</FONT>         * @return The renderer state.<a name="line.659"></a>
<FONT color="green">660</FONT>         */<a name="line.660"></a>
<FONT color="green">661</FONT>        public XYItemRendererState initialise(Graphics2D g2,<a name="line.661"></a>
<FONT color="green">662</FONT>                                              Rectangle2D dataArea,<a name="line.662"></a>
<FONT color="green">663</FONT>                                              XYPlot plot,<a name="line.663"></a>
<FONT color="green">664</FONT>                                              XYDataset data,<a name="line.664"></a>
<FONT color="green">665</FONT>                                              PlotRenderingInfo info) {<a name="line.665"></a>
<FONT color="green">666</FONT>    <a name="line.666"></a>
<FONT color="green">667</FONT>            State state = new State(info);<a name="line.667"></a>
<FONT color="green">668</FONT>            state.seriesPath = new GeneralPath();<a name="line.668"></a>
<FONT color="green">669</FONT>            state.seriesIndex = -1;<a name="line.669"></a>
<FONT color="green">670</FONT>            return state;<a name="line.670"></a>
<FONT color="green">671</FONT>    <a name="line.671"></a>
<FONT color="green">672</FONT>        }<a name="line.672"></a>
<FONT color="green">673</FONT>        <a name="line.673"></a>
<FONT color="green">674</FONT>        /**<a name="line.674"></a>
<FONT color="green">675</FONT>         * Draws the visual representation of a single data item.<a name="line.675"></a>
<FONT color="green">676</FONT>         *<a name="line.676"></a>
<FONT color="green">677</FONT>         * @param g2  the graphics device.<a name="line.677"></a>
<FONT color="green">678</FONT>         * @param state  the renderer state.<a name="line.678"></a>
<FONT color="green">679</FONT>         * @param dataArea  the area within which the data is being drawn.<a name="line.679"></a>
<FONT color="green">680</FONT>         * @param info  collects information about the drawing.<a name="line.680"></a>
<FONT color="green">681</FONT>         * @param plot  the plot (can be used to obtain standard color information <a name="line.681"></a>
<FONT color="green">682</FONT>         *              etc).<a name="line.682"></a>
<FONT color="green">683</FONT>         * @param domainAxis  the domain axis.<a name="line.683"></a>
<FONT color="green">684</FONT>         * @param rangeAxis  the range axis.<a name="line.684"></a>
<FONT color="green">685</FONT>         * @param dataset  the dataset.<a name="line.685"></a>
<FONT color="green">686</FONT>         * @param series  the series index (zero-based).<a name="line.686"></a>
<FONT color="green">687</FONT>         * @param item  the item index (zero-based).<a name="line.687"></a>
<FONT color="green">688</FONT>         * @param crosshairState  crosshair information for the plot <a name="line.688"></a>
<FONT color="green">689</FONT>         *                        (&lt;code&gt;null&lt;/code&gt; permitted).<a name="line.689"></a>
<FONT color="green">690</FONT>         * @param pass  the pass index.<a name="line.690"></a>
<FONT color="green">691</FONT>         */<a name="line.691"></a>
<FONT color="green">692</FONT>        public void drawItem(Graphics2D g2, <a name="line.692"></a>
<FONT color="green">693</FONT>                             XYItemRendererState state,<a name="line.693"></a>
<FONT color="green">694</FONT>                             Rectangle2D dataArea, <a name="line.694"></a>
<FONT color="green">695</FONT>                             PlotRenderingInfo info, <a name="line.695"></a>
<FONT color="green">696</FONT>                             XYPlot plot,<a name="line.696"></a>
<FONT color="green">697</FONT>                             ValueAxis domainAxis, <a name="line.697"></a>
<FONT color="green">698</FONT>                             ValueAxis rangeAxis, <a name="line.698"></a>
<FONT color="green">699</FONT>                             XYDataset dataset,<a name="line.699"></a>
<FONT color="green">700</FONT>                             int series, <a name="line.700"></a>
<FONT color="green">701</FONT>                             int item, <a name="line.701"></a>
<FONT color="green">702</FONT>                             CrosshairState crosshairState, <a name="line.702"></a>
<FONT color="green">703</FONT>                             int pass) {<a name="line.703"></a>
<FONT color="green">704</FONT>    <a name="line.704"></a>
<FONT color="green">705</FONT>            boolean itemVisible = getItemVisible(series, item);<a name="line.705"></a>
<FONT color="green">706</FONT>            <a name="line.706"></a>
<FONT color="green">707</FONT>            // setup for collecting optional entity info...<a name="line.707"></a>
<FONT color="green">708</FONT>            Shape entityArea = null;<a name="line.708"></a>
<FONT color="green">709</FONT>            EntityCollection entities = null;<a name="line.709"></a>
<FONT color="green">710</FONT>            if (info != null) {<a name="line.710"></a>
<FONT color="green">711</FONT>                entities = info.getOwner().getEntityCollection();<a name="line.711"></a>
<FONT color="green">712</FONT>            }<a name="line.712"></a>
<FONT color="green">713</FONT>    <a name="line.713"></a>
<FONT color="green">714</FONT>            PlotOrientation orientation = plot.getOrientation();<a name="line.714"></a>
<FONT color="green">715</FONT>            Paint paint = getItemPaint(series, item);<a name="line.715"></a>
<FONT color="green">716</FONT>            Stroke seriesStroke = getItemStroke(series, item);<a name="line.716"></