symbolaxis.html

jfreechart1。0。2的api。

<FONT color="green">550</FONT>                        if (Math.abs(xx - previousDrawnTickLabelPos) <a name="line.550"></a>
<FONT color="green">551</FONT>                                &lt; avgTickLabelLength) {<a name="line.551"></a>
<FONT color="green">552</FONT>                            tickLabelsOverlapping = true;<a name="line.552"></a>
<FONT color="green">553</FONT>                        }<a name="line.553"></a>
<FONT color="green">554</FONT>                    }<a name="line.554"></a>
<FONT color="green">555</FONT>                    if (tickLabelsOverlapping) {<a name="line.555"></a>
<FONT color="green">556</FONT>                        tickLabel = ""; // don't draw this tick label<a name="line.556"></a>
<FONT color="green">557</FONT>                    }<a name="line.557"></a>
<FONT color="green">558</FONT>                    else {<a name="line.558"></a>
<FONT color="green">559</FONT>                        // remember these values for next comparison<a name="line.559"></a>
<FONT color="green">560</FONT>                        previousDrawnTickLabelPos = xx;<a name="line.560"></a>
<FONT color="green">561</FONT>                        previousDrawnTickLabelLength = tickLabelLength;         <a name="line.561"></a>
<FONT color="green">562</FONT>                    } <a name="line.562"></a>
<FONT color="green">563</FONT>                    <a name="line.563"></a>
<FONT color="green">564</FONT>                    TextAnchor anchor = null;<a name="line.564"></a>
<FONT color="green">565</FONT>                    TextAnchor rotationAnchor = null;<a name="line.565"></a>
<FONT color="green">566</FONT>                    double angle = 0.0;<a name="line.566"></a>
<FONT color="green">567</FONT>                    if (isVerticalTickLabels()) {<a name="line.567"></a>
<FONT color="green">568</FONT>                        anchor = TextAnchor.CENTER_RIGHT;<a name="line.568"></a>
<FONT color="green">569</FONT>                        rotationAnchor = TextAnchor.CENTER_RIGHT;<a name="line.569"></a>
<FONT color="green">570</FONT>                        if (edge == RectangleEdge.TOP) {<a name="line.570"></a>
<FONT color="green">571</FONT>                            angle = Math.PI / 2.0;<a name="line.571"></a>
<FONT color="green">572</FONT>                        }<a name="line.572"></a>
<FONT color="green">573</FONT>                        else {<a name="line.573"></a>
<FONT color="green">574</FONT>                            angle = -Math.PI / 2.0;<a name="line.574"></a>
<FONT color="green">575</FONT>                        }<a name="line.575"></a>
<FONT color="green">576</FONT>                    }<a name="line.576"></a>
<FONT color="green">577</FONT>                    else {<a name="line.577"></a>
<FONT color="green">578</FONT>                        if (edge == RectangleEdge.TOP) {<a name="line.578"></a>
<FONT color="green">579</FONT>                            anchor = TextAnchor.BOTTOM_CENTER;<a name="line.579"></a>
<FONT color="green">580</FONT>                            rotationAnchor = TextAnchor.BOTTOM_CENTER;<a name="line.580"></a>
<FONT color="green">581</FONT>                        }<a name="line.581"></a>
<FONT color="green">582</FONT>                        else {<a name="line.582"></a>
<FONT color="green">583</FONT>                            anchor = TextAnchor.TOP_CENTER;<a name="line.583"></a>
<FONT color="green">584</FONT>                            rotationAnchor = TextAnchor.TOP_CENTER;<a name="line.584"></a>
<FONT color="green">585</FONT>                        }<a name="line.585"></a>
<FONT color="green">586</FONT>                    }<a name="line.586"></a>
<FONT color="green">587</FONT>                    Tick tick = new NumberTick(<a name="line.587"></a>
<FONT color="green">588</FONT>                        new Double(currentTickValue), tickLabel, anchor, <a name="line.588"></a>
<FONT color="green">589</FONT>                        rotationAnchor, angle<a name="line.589"></a>
<FONT color="green">590</FONT>                    );<a name="line.590"></a>
<FONT color="green">591</FONT>                    ticks.add(tick);<a name="line.591"></a>
<FONT color="green">592</FONT>                }<a name="line.592"></a>
<FONT color="green">593</FONT>            }<a name="line.593"></a>
<FONT color="green">594</FONT>            return ticks;<a name="line.594"></a>
<FONT color="green">595</FONT>    <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>        /**<a name="line.598"></a>
<FONT color="green">599</FONT>         * Calculates the positions of the tick labels for the axis, storing the <a name="line.599"></a>
<FONT color="green">600</FONT>         * results in the tick label list (ready for drawing).<a name="line.600"></a>
<FONT color="green">601</FONT>         *<a name="line.601"></a>
<FONT color="green">602</FONT>         * @param g2  the graphics device.<a name="line.602"></a>
<FONT color="green">603</FONT>         * @param dataArea  the area in which the plot should be drawn.<a name="line.603"></a>
<FONT color="green">604</FONT>         * @param edge  the location of the axis.<a name="line.604"></a>
<FONT color="green">605</FONT>         * <a name="line.605"></a>
<FONT color="green">606</FONT>         * @return The ticks.<a name="line.606"></a>
<FONT color="green">607</FONT>         */<a name="line.607"></a>
<FONT color="green">608</FONT>        protected List refreshTicksVertical(Graphics2D g2,<a name="line.608"></a>
<FONT color="green">609</FONT>                                            Rectangle2D dataArea,<a name="line.609"></a>
<FONT color="green">610</FONT>                                            RectangleEdge edge) {<a name="line.610"></a>
<FONT color="green">611</FONT>    <a name="line.611"></a>
<FONT color="green">612</FONT>            List ticks = new java.util.ArrayList();<a name="line.612"></a>
<FONT color="green">613</FONT>    <a name="line.613"></a>
<FONT color="green">614</FONT>            Font tickLabelFont = getTickLabelFont();<a name="line.614"></a>
<FONT color="green">615</FONT>            g2.setFont(tickLabelFont);<a name="line.615"></a>
<FONT color="green">616</FONT>    <a name="line.616"></a>
<FONT color="green">617</FONT>            double size = getTickUnit().getSize();<a name="line.617"></a>
<FONT color="green">618</FONT>            int count = calculateVisibleTickCount();<a name="line.618"></a>
<FONT color="green">619</FONT>            double lowestTickValue = calculateLowestVisibleTickValue();<a name="line.619"></a>
<FONT color="green">620</FONT>    <a name="line.620"></a>
<FONT color="green">621</FONT>            double previousDrawnTickLabelPos = 0.0;         <a name="line.621"></a>
<FONT color="green">622</FONT>            double previousDrawnTickLabelLength = 0.0;              <a name="line.622"></a>
<FONT color="green">623</FONT>    <a name="line.623"></a>
<FONT color="green">624</FONT>            if (count &lt;= ValueAxis.MAXIMUM_TICK_COUNT) {<a name="line.624"></a>
<FONT color="green">625</FONT>                for (int i = 0; i &lt; count; i++) {<a name="line.625"></a>
<FONT color="green">626</FONT>                    double currentTickValue = lowestTickValue + (i * size);<a name="line.626"></a>
<FONT color="green">627</FONT>                    double yy = valueToJava2D(currentTickValue, dataArea, edge);<a name="line.627"></a>
<FONT color="green">628</FONT>                    String tickLabel;<a name="line.628"></a>
<FONT color="green">629</FONT>                    NumberFormat formatter = getNumberFormatOverride();<a name="line.629"></a>
<FONT color="green">630</FONT>                    if (formatter != null) {<a name="line.630"></a>
<FONT color="green">631</FONT>                        tickLabel = formatter.format(currentTickValue);<a name="line.631"></a>
<FONT color="green">632</FONT>                    }<a name="line.632"></a>
<FONT color="green">633</FONT>                    else {<a name="line.633"></a>
<FONT color="green">634</FONT>                        tickLabel = valueToString(currentTickValue);<a name="line.634"></a>
<FONT color="green">635</FONT>                    }<a name="line.635"></a>
<FONT color="green">636</FONT>    <a name="line.636"></a>
<FONT color="green">637</FONT>                    // avoid to draw overlapping tick labels<a name="line.637"></a>
<FONT color="green">638</FONT>                    Rectangle2D bounds = TextUtilities.getTextBounds(<a name="line.638"></a>
<FONT color="green">639</FONT>                        tickLabel, g2, g2.getFontMetrics()<a name="line.639"></a>
<FONT color="green">640</FONT>                    );<a name="line.640"></a>
<FONT color="green">641</FONT>                    double tickLabelLength = isVerticalTickLabels() <a name="line.641"></a>
<FONT color="green">642</FONT>                        ? bounds.getWidth() : bounds.getHeight();<a name="line.642"></a>
<FONT color="green">643</FONT>                    boolean tickLabelsOverlapping = false;<a name="line.643"></a>
<FONT color="green">644</FONT>                    if (i &gt; 0) {<a name="line.644"></a>
<FONT color="green">645</FONT>                        double avgTickLabelLength = <a name="line.645"></a>
<FONT color="green">646</FONT>                            (previousDrawnTickLabelLength + tickLabelLength) / 2.0;<a name="line.646"></a>
<FONT color="green">647</FONT>                        if (Math.abs(yy - previousDrawnTickLabelPos) <a name="line.647"></a>
<FONT color="green">648</FONT>                                &lt; avgTickLabelLength) {<a name="line.648"></a>
<FONT color="green">649</FONT>                            tickLabelsOverlapping = true;    <a name="line.649"></a>
<FONT color="green">650</FONT>                        }<a name="line.650"></a>
<FONT color="green">651</FONT>                        if (tickLabelsOverlapping) {<a name="line.651"></a>
<FONT color="green">652</FONT>                            tickLabel = ""; // don't draw this tick label<a name="line.652"></a>
<FONT color="green">653</FONT>                        }<a name="line.653"></a>
<FONT color="green">654</FONT>                        else {<a name="line.654"></a>
<FONT color="green">655</FONT>                            // remember these values for next comparison<a name="line.655"></a>
<FONT color="green">656</FONT>                            previousDrawnTickLabelPos = yy;<a name="line.656"></a>
<FONT color="green">657</FONT>                            previousDrawnTickLabelLength = tickLabelLength;         <a name="line.657"></a>
<FONT color="green">658</FONT>                        } <a name="line.658"></a>
<FONT color="green">659</FONT>                    }<a name="line.659"></a>
<FONT color="green">660</FONT>                    TextAnchor anchor = null;<a name="line.660"></a>
<FONT color="green">661</FONT>                    TextAnchor rotationAnchor = null;<a name="line.661"></a>
<FONT color="green">662</FONT>                    double angle = 0.0;<a name="line.662"></a>
<FONT color="green">663</FONT>                    if (isVerticalTickLabels()) {<a name="line.663"></a>
<FONT color="green">664</FONT>                        anchor = TextAnchor.BOTTOM_CENTER;<a name="line.664"></a>
<FONT color="green">665</FONT>                        rotationAnchor = TextAnchor.BOTTOM_CENTER;<a name="line.665"></a>
<FONT color="green">666</FONT>                        if (edge == RectangleEdge.LEFT) {<a name="line.666"></a>
<FONT color="green">667</FONT>                            angle = -Math.PI / 2.0;<a name="line.667"></a>
<FONT color="green">668</FONT>                        }<a name="line.668"></a>
<FONT color="green">669</FONT>                        else {<a name="line.669"></a>
<FONT color="green">670</FONT>                            angle = Math.PI / 2.0;<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>                    else {<a name="line.673"></a>
<FONT color="green">674</FONT>                        if (edge == RectangleEdge.LEFT) {<a name="line.674"></a>
<FONT color="green">675</FONT>                            anchor = TextAnchor.CENTER_RIGHT;<a name="line.675"></a>
<FONT color="green">676</FONT>                            rotationAnchor = TextAnchor.CENTER_RIGHT;<a name="line.676"></a>
<FONT color="green">677</FONT>                        }<a name="line.677"></a>
<FONT color="green">678</FONT>                        else {<a name="line.678"></a>
<FONT color="green">679</FONT>                            anchor = TextAnchor.CENTER_LEFT;<a name="line.679"></a>
<FONT color="green">680</FONT>                            rotationAnchor = TextAnchor.CENTER_LEFT;<a name="line.680"></a>
<FONT color="green">681</FONT>                        }<a name="line.681"></a>
<FONT color="green">682</FONT>                    }<a name="line.682"></a>
<FONT color="green">683</FONT>                    Tick tick = new NumberTick(<a name="line.683"></a>
<FONT color="green">684</FONT>                        new Double(currentTickValue), tickLabel, anchor, <a name="line.684"></a>
<FONT color="green">685</FONT>                        rotationAnchor, angle<a name="line.685"></a>
<FONT color="green">686</FONT>                    );<a name="line.686"></a>
<FONT color="green">687</FONT>                    ticks.add(tick);<a name="