valueaxis.html

jfreechart1。0。2的api。

<FONT color="green">421</FONT>            notifyListeners(new AxisChangeEvent(this));<a name="line.421"></a>
<FONT color="green">422</FONT>        }<a name="line.422"></a>
<FONT color="green">423</FONT>        <a name="line.423"></a>
<FONT color="green">424</FONT>        /**<a name="line.424"></a>
<FONT color="green">425</FONT>         * Returns a shape that can be displayed as an arrow pointing left at the <a name="line.425"></a>
<FONT color="green">426</FONT>         * end of an axis line.<a name="line.426"></a>
<FONT color="green">427</FONT>         * <a name="line.427"></a>
<FONT color="green">428</FONT>         * @return A shape (never &lt;code&gt;null&lt;/code&gt;).<a name="line.428"></a>
<FONT color="green">429</FONT>         */<a name="line.429"></a>
<FONT color="green">430</FONT>        public Shape getLeftArrow() {<a name="line.430"></a>
<FONT color="green">431</FONT>            return this.leftArrow;   <a name="line.431"></a>
<FONT color="green">432</FONT>        }<a name="line.432"></a>
<FONT color="green">433</FONT>        <a name="line.433"></a>
<FONT color="green">434</FONT>        /**<a name="line.434"></a>
<FONT color="green">435</FONT>         * Sets the shape that can be displayed as an arrow pointing left at the <a name="line.435"></a>
<FONT color="green">436</FONT>         * end of an axis line and sends an {@link AxisChangeEvent} to all <a name="line.436"></a>
<FONT color="green">437</FONT>         * registered listeners.<a name="line.437"></a>
<FONT color="green">438</FONT>         * <a name="line.438"></a>
<FONT color="green">439</FONT>         * @param arrow  the arrow shape (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.439"></a>
<FONT color="green">440</FONT>         */<a name="line.440"></a>
<FONT color="green">441</FONT>        public void setLeftArrow(Shape arrow) {<a name="line.441"></a>
<FONT color="green">442</FONT>            if (arrow == null) {<a name="line.442"></a>
<FONT color="green">443</FONT>                throw new IllegalArgumentException("Null 'arrow' argument.");   <a name="line.443"></a>
<FONT color="green">444</FONT>            }<a name="line.444"></a>
<FONT color="green">445</FONT>            this.leftArrow = arrow;<a name="line.445"></a>
<FONT color="green">446</FONT>            notifyListeners(new AxisChangeEvent(this));<a name="line.446"></a>
<FONT color="green">447</FONT>        }<a name="line.447"></a>
<FONT color="green">448</FONT>        <a name="line.448"></a>
<FONT color="green">449</FONT>        /**<a name="line.449"></a>
<FONT color="green">450</FONT>         * Returns a shape that can be displayed as an arrow pointing right at the <a name="line.450"></a>
<FONT color="green">451</FONT>         * end of an axis line.<a name="line.451"></a>
<FONT color="green">452</FONT>         * <a name="line.452"></a>
<FONT color="green">453</FONT>         * @return A shape (never &lt;code&gt;null&lt;/code&gt;).<a name="line.453"></a>
<FONT color="green">454</FONT>         */<a name="line.454"></a>
<FONT color="green">455</FONT>        public Shape getRightArrow() {<a name="line.455"></a>
<FONT color="green">456</FONT>            return this.rightArrow;   <a name="line.456"></a>
<FONT color="green">457</FONT>        }<a name="line.457"></a>
<FONT color="green">458</FONT>        <a name="line.458"></a>
<FONT color="green">459</FONT>        /**<a name="line.459"></a>
<FONT color="green">460</FONT>         * Sets the shape that can be displayed as an arrow pointing rightwards at <a name="line.460"></a>
<FONT color="green">461</FONT>         * the end of an axis line and sends an {@link AxisChangeEvent} to all <a name="line.461"></a>
<FONT color="green">462</FONT>         * registered listeners.<a name="line.462"></a>
<FONT color="green">463</FONT>         * <a name="line.463"></a>
<FONT color="green">464</FONT>         * @param arrow  the arrow shape (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.464"></a>
<FONT color="green">465</FONT>         */<a name="line.465"></a>
<FONT color="green">466</FONT>        public void setRightArrow(Shape arrow) {<a name="line.466"></a>
<FONT color="green">467</FONT>            if (arrow == null) {<a name="line.467"></a>
<FONT color="green">468</FONT>                throw new IllegalArgumentException("Null 'arrow' argument.");   <a name="line.468"></a>
<FONT color="green">469</FONT>            }<a name="line.469"></a>
<FONT color="green">470</FONT>            this.rightArrow = arrow;<a name="line.470"></a>
<FONT color="green">471</FONT>            notifyListeners(new AxisChangeEvent(this));<a name="line.471"></a>
<FONT color="green">472</FONT>        }<a name="line.472"></a>
<FONT color="green">473</FONT>        <a name="line.473"></a>
<FONT color="green">474</FONT>        /**<a name="line.474"></a>
<FONT color="green">475</FONT>         * Draws an axis line at the current cursor position and edge.<a name="line.475"></a>
<FONT color="green">476</FONT>         * <a name="line.476"></a>
<FONT color="green">477</FONT>         * @param g2  the graphics device.<a name="line.477"></a>
<FONT color="green">478</FONT>         * @param cursor  the cursor position.<a name="line.478"></a>
<FONT color="green">479</FONT>         * @param dataArea  the data area.<a name="line.479"></a>
<FONT color="green">480</FONT>         * @param edge  the edge.<a name="line.480"></a>
<FONT color="green">481</FONT>         */<a name="line.481"></a>
<FONT color="green">482</FONT>        protected void drawAxisLine(Graphics2D g2, double cursor,<a name="line.482"></a>
<FONT color="green">483</FONT>                                    Rectangle2D dataArea, RectangleEdge edge) {<a name="line.483"></a>
<FONT color="green">484</FONT>            Line2D axisLine = null;<a name="line.484"></a>
<FONT color="green">485</FONT>            if (edge == RectangleEdge.TOP) {<a name="line.485"></a>
<FONT color="green">486</FONT>                axisLine = new Line2D.Double(<a name="line.486"></a>
<FONT color="green">487</FONT>                    dataArea.getX(), cursor, dataArea.getMaxX(), cursor<a name="line.487"></a>
<FONT color="green">488</FONT>                );  <a name="line.488"></a>
<FONT color="green">489</FONT>            }<a name="line.489"></a>
<FONT color="green">490</FONT>            else if (edge == RectangleEdge.BOTTOM) {<a name="line.490"></a>
<FONT color="green">491</FONT>                axisLine = new Line2D.Double(<a name="line.491"></a>
<FONT color="green">492</FONT>                    dataArea.getX(), cursor, dataArea.getMaxX(), cursor<a name="line.492"></a>
<FONT color="green">493</FONT>                );  <a name="line.493"></a>
<FONT color="green">494</FONT>            }<a name="line.494"></a>
<FONT color="green">495</FONT>            else if (edge == RectangleEdge.LEFT) {<a name="line.495"></a>
<FONT color="green">496</FONT>                axisLine = new Line2D.Double(<a name="line.496"></a>
<FONT color="green">497</FONT>                    cursor, dataArea.getY(), cursor, dataArea.getMaxY()<a name="line.497"></a>
<FONT color="green">498</FONT>                );  <a name="line.498"></a>
<FONT color="green">499</FONT>            }<a name="line.499"></a>
<FONT color="green">500</FONT>            else if (edge == RectangleEdge.RIGHT) {<a name="line.500"></a>
<FONT color="green">501</FONT>                axisLine = new Line2D.Double(<a name="line.501"></a>
<FONT color="green">502</FONT>                    cursor, dataArea.getY(), cursor, dataArea.getMaxY()<a name="line.502"></a>
<FONT color="green">503</FONT>                );  <a name="line.503"></a>
<FONT color="green">504</FONT>            }<a name="line.504"></a>
<FONT color="green">505</FONT>            g2.setPaint(getAxisLinePaint());<a name="line.505"></a>
<FONT color="green">506</FONT>            g2.setStroke(getAxisLineStroke());<a name="line.506"></a>
<FONT color="green">507</FONT>            g2.draw(axisLine);<a name="line.507"></a>
<FONT color="green">508</FONT>            <a name="line.508"></a>
<FONT color="green">509</FONT>            boolean drawUpOrRight = false;  <a name="line.509"></a>
<FONT color="green">510</FONT>            boolean drawDownOrLeft = false;<a name="line.510"></a>
<FONT color="green">511</FONT>            if (this.positiveArrowVisible) {<a name="line.511"></a>
<FONT color="green">512</FONT>                if (this.inverted) {<a name="line.512"></a>
<FONT color="green">513</FONT>                    drawDownOrLeft = true;   <a name="line.513"></a>
<FONT color="green">514</FONT>                }<a name="line.514"></a>
<FONT color="green">515</FONT>                else {<a name="line.515"></a>
<FONT color="green">516</FONT>                    drawUpOrRight = true;   <a name="line.516"></a>
<FONT color="green">517</FONT>                }<a name="line.517"></a>
<FONT color="green">518</FONT>            }<a name="line.518"></a>
<FONT color="green">519</FONT>            if (this.negativeArrowVisible) {<a name="line.519"></a>
<FONT color="green">520</FONT>                if (this.inverted) {<a name="line.520"></a>
<FONT color="green">521</FONT>                    drawUpOrRight = true;   <a name="line.521"></a>
<FONT color="green">522</FONT>                }<a name="line.522"></a>
<FONT color="green">523</FONT>                else {<a name="line.523"></a>
<FONT color="green">524</FONT>                    drawDownOrLeft = true;   <a name="line.524"></a>
<FONT color="green">525</FONT>                }<a name="line.525"></a>
<FONT color="green">526</FONT>            }<a name="line.526"></a>
<FONT color="green">527</FONT>            if (drawUpOrRight) {<a name="line.527"></a>
<FONT color="green">528</FONT>                double x = 0.0;<a name="line.528"></a>
<FONT color="green">529</FONT>                double y = 0.0;<a name="line.529"></a>
<FONT color="green">530</FONT>                Shape arrow = null;<a name="line.530"></a>
<FONT color="green">531</FONT>                if (edge == RectangleEdge.TOP || edge == RectangleEdge.BOTTOM) {<a name="line.531"></a>
<FONT color="green">532</FONT>                    x = dataArea.getMaxX();<a name="line.532"></a>
<FONT color="green">533</FONT>                    y = cursor;<a name="line.533"></a>
<FONT color="green">534</FONT>                    arrow = this.rightArrow; <a name="line.534"></a>
<FONT color="green">535</FONT>                }<a name="line.535"></a>
<FONT color="green">536</FONT>                else if (edge == RectangleEdge.LEFT <a name="line.536"></a>
<FONT color="green">537</FONT>                        || edge == RectangleEdge.RIGHT) {<a name="line.537"></a>
<FONT color="green">538</FONT>                    x = cursor;<a name="line.538"></a>
<FONT color="green">539</FONT>                    y = dataArea.getMinY();<a name="line.539"></a>
<FONT color="green">540</FONT>                    arrow = this.upArrow; <a name="line.540"></a>
<FONT color="green">541</FONT>                }<a name="line.541"></a>
<FONT color="green">542</FONT>    <a name="line.542"></a>
<FONT color="green">543</FONT>                // draw the arrow...<a name="line.543"></a>
<FONT color="green">544</FONT>                AffineTransform transformer = new AffineTransform();<a name="line.544"></a>
<FONT color="green">545</FONT>                transformer.setToTranslation(x, y);<a name="line.545"></a>
<FONT color="green">546</FONT>                Shape shape = transformer.createTransformedShape(arrow);<a name="line.546"></a>
<FONT color="green">547</FONT>                g2.fill(shape);<a name="line.547"></a>
<FONT color="green">548</FONT>                g2.draw(shape);<a name="line.548"></a>
<FONT color="green">549</FONT>            }<a name="line.549"></a>
<FONT color="green">550</FONT>            <a name="line.550"></a>
<FONT color="green">551</FONT>            if (drawDownOrLeft) {<a name="line.551"></a>
<FONT color="green">552</FONT>                double x = 0.0;<a name="line.552"></a>
<FONT color="green">553</FONT>                double y = 0.0;<a name="line.553"></a>
<FONT color="green">554</FONT>                Shape arrow = null;<a name="line.554"></a>
<FONT color="green">555</FONT>                if (edge == RectangleEdge.TOP || edge == RectangleEdge.BOTTOM) {<a name="line.555"></a>
<FONT color="green">556</FONT>                    x = dataArea.getMinX();<a name="line.556"></a>
<FONT color="green">557</FONT>                    y = cursor;<a name="line.557"></a>
<FONT color="green">558</FONT>                    arrow = this.leftArrow; <a name="line.558"></a>
<FONT color="green">559</FONT>                }<a name="line.559"></a>
<FONT color="green">560</FONT>                else if (edge == RectangleEdge.LEFT <a name="line.560"></a>
<FONT color="green">561</FONT>                        || edge == RectangleEdge.RIGHT) {<a name="line.561"></a>