categoryaxis.html

jfreechart1。0。2的api。

<FONT color="green">570</FONT>        /**<a name="line.570"></a>
<FONT color="green">571</FONT>         * Returns the end coordinate for the specified category.<a name="line.571"></a>
<FONT color="green">572</FONT>         *<a name="line.572"></a>
<FONT color="green">573</FONT>         * @param category  the category.<a name="line.573"></a>
<FONT color="green">574</FONT>         * @param categoryCount  the number of categories.<a name="line.574"></a>
<FONT color="green">575</FONT>         * @param area  the data area.<a name="line.575"></a>
<FONT color="green">576</FONT>         * @param edge  the axis location.<a name="line.576"></a>
<FONT color="green">577</FONT>         *<a name="line.577"></a>
<FONT color="green">578</FONT>         * @return The coordinate.<a name="line.578"></a>
<FONT color="green">579</FONT>         */<a name="line.579"></a>
<FONT color="green">580</FONT>        public double getCategoryEnd(int category, int categoryCount, <a name="line.580"></a>
<FONT color="green">581</FONT>                                     Rectangle2D area, RectangleEdge edge) {<a name="line.581"></a>
<FONT color="green">582</FONT>    <a name="line.582"></a>
<FONT color="green">583</FONT>            return getCategoryStart(category, categoryCount, area, edge)<a name="line.583"></a>
<FONT color="green">584</FONT>                   + calculateCategorySize(categoryCount, area, edge);<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>    <a name="line.587"></a>
<FONT color="green">588</FONT>        /**<a name="line.588"></a>
<FONT color="green">589</FONT>         * Calculates the size (width or height, depending on the location of the <a name="line.589"></a>
<FONT color="green">590</FONT>         * axis) of a category.<a name="line.590"></a>
<FONT color="green">591</FONT>         *<a name="line.591"></a>
<FONT color="green">592</FONT>         * @param categoryCount  the number of categories.<a name="line.592"></a>
<FONT color="green">593</FONT>         * @param area  the area within which the categories will be drawn.<a name="line.593"></a>
<FONT color="green">594</FONT>         * @param edge  the axis location.<a name="line.594"></a>
<FONT color="green">595</FONT>         *<a name="line.595"></a>
<FONT color="green">596</FONT>         * @return The category size.<a name="line.596"></a>
<FONT color="green">597</FONT>         */<a name="line.597"></a>
<FONT color="green">598</FONT>        protected double calculateCategorySize(int categoryCount, Rectangle2D area,<a name="line.598"></a>
<FONT color="green">599</FONT>                                               RectangleEdge edge) {<a name="line.599"></a>
<FONT color="green">600</FONT>    <a name="line.600"></a>
<FONT color="green">601</FONT>            double result = 0.0;<a name="line.601"></a>
<FONT color="green">602</FONT>            double available = 0.0;<a name="line.602"></a>
<FONT color="green">603</FONT>    <a name="line.603"></a>
<FONT color="green">604</FONT>            if ((edge == RectangleEdge.TOP) || (edge == RectangleEdge.BOTTOM)) {<a name="line.604"></a>
<FONT color="green">605</FONT>                available = area.getWidth();<a name="line.605"></a>
<FONT color="green">606</FONT>            }<a name="line.606"></a>
<FONT color="green">607</FONT>            else if ((edge == RectangleEdge.LEFT) <a name="line.607"></a>
<FONT color="green">608</FONT>                    || (edge == RectangleEdge.RIGHT)) {<a name="line.608"></a>
<FONT color="green">609</FONT>                available = area.getHeight();<a name="line.609"></a>
<FONT color="green">610</FONT>            }<a name="line.610"></a>
<FONT color="green">611</FONT>            if (categoryCount &gt; 1) {<a name="line.611"></a>
<FONT color="green">612</FONT>                result = available * (1 - getLowerMargin() - getUpperMargin() <a name="line.612"></a>
<FONT color="green">613</FONT>                         - getCategoryMargin());<a name="line.613"></a>
<FONT color="green">614</FONT>                result = result / categoryCount;<a name="line.614"></a>
<FONT color="green">615</FONT>            }<a name="line.615"></a>
<FONT color="green">616</FONT>            else {<a name="line.616"></a>
<FONT color="green">617</FONT>                result = available * (1 - getLowerMargin() - getUpperMargin());<a name="line.617"></a>
<FONT color="green">618</FONT>            }<a name="line.618"></a>
<FONT color="green">619</FONT>            return result;<a name="line.619"></a>
<FONT color="green">620</FONT>    <a name="line.620"></a>
<FONT color="green">621</FONT>        }<a name="line.621"></a>
<FONT color="green">622</FONT>    <a name="line.622"></a>
<FONT color="green">623</FONT>        /**<a name="line.623"></a>
<FONT color="green">624</FONT>         * Calculates the size (width or height, depending on the location of the <a name="line.624"></a>
<FONT color="green">625</FONT>         * axis) of a category gap.<a name="line.625"></a>
<FONT color="green">626</FONT>         *<a name="line.626"></a>
<FONT color="green">627</FONT>         * @param categoryCount  the number of categories.<a name="line.627"></a>
<FONT color="green">628</FONT>         * @param area  the area within which the categories will be drawn.<a name="line.628"></a>
<FONT color="green">629</FONT>         * @param edge  the axis location.<a name="line.629"></a>
<FONT color="green">630</FONT>         *<a name="line.630"></a>
<FONT color="green">631</FONT>         * @return The category gap width.<a name="line.631"></a>
<FONT color="green">632</FONT>         */<a name="line.632"></a>
<FONT color="green">633</FONT>        protected double calculateCategoryGapSize(int categoryCount, <a name="line.633"></a>
<FONT color="green">634</FONT>                                                  Rectangle2D area,<a name="line.634"></a>
<FONT color="green">635</FONT>                                                  RectangleEdge edge) {<a name="line.635"></a>
<FONT color="green">636</FONT>    <a name="line.636"></a>
<FONT color="green">637</FONT>            double result = 0.0;<a name="line.637"></a>
<FONT color="green">638</FONT>            double available = 0.0;<a name="line.638"></a>
<FONT color="green">639</FONT>    <a name="line.639"></a>
<FONT color="green">640</FONT>            if ((edge == RectangleEdge.TOP) || (edge == RectangleEdge.BOTTOM)) {<a name="line.640"></a>
<FONT color="green">641</FONT>                available = area.getWidth();<a name="line.641"></a>
<FONT color="green">642</FONT>            }<a name="line.642"></a>
<FONT color="green">643</FONT>            else if ((edge == RectangleEdge.LEFT) <a name="line.643"></a>
<FONT color="green">644</FONT>                    || (edge == RectangleEdge.RIGHT)) {<a name="line.644"></a>
<FONT color="green">645</FONT>                available = area.getHeight();<a name="line.645"></a>
<FONT color="green">646</FONT>            }<a name="line.646"></a>
<FONT color="green">647</FONT>    <a name="line.647"></a>
<FONT color="green">648</FONT>            if (categoryCount &gt; 1) {<a name="line.648"></a>
<FONT color="green">649</FONT>                result = available * getCategoryMargin() / (categoryCount - 1);<a name="line.649"></a>
<FONT color="green">650</FONT>            }<a name="line.650"></a>
<FONT color="green">651</FONT>    <a name="line.651"></a>
<FONT color="green">652</FONT>            return result;<a name="line.652"></a>
<FONT color="green">653</FONT>    <a name="line.653"></a>
<FONT color="green">654</FONT>        }<a name="line.654"></a>
<FONT color="green">655</FONT>    <a name="line.655"></a>
<FONT color="green">656</FONT>        /**<a name="line.656"></a>
<FONT color="green">657</FONT>         * Estimates the space required for the axis, given a specific drawing area.<a name="line.657"></a>
<FONT color="green">658</FONT>         *<a name="line.658"></a>
<FONT color="green">659</FONT>         * @param g2  the graphics device (used to obtain font information).<a name="line.659"></a>
<FONT color="green">660</FONT>         * @param plot  the plot that the axis belongs to.<a name="line.660"></a>
<FONT color="green">661</FONT>         * @param plotArea  the area within which the axis should be drawn.<a name="line.661"></a>
<FONT color="green">662</FONT>         * @param edge  the axis location (top or bottom).<a name="line.662"></a>
<FONT color="green">663</FONT>         * @param space  the space already reserved.<a name="line.663"></a>
<FONT color="green">664</FONT>         *<a name="line.664"></a>
<FONT color="green">665</FONT>         * @return The space required to draw the axis.<a name="line.665"></a>
<FONT color="green">666</FONT>         */<a name="line.666"></a>
<FONT color="green">667</FONT>        public AxisSpace reserveSpace(Graphics2D g2, Plot plot, <a name="line.667"></a>
<FONT color="green">668</FONT>                                      Rectangle2D plotArea, <a name="line.668"></a>
<FONT color="green">669</FONT>                                      RectangleEdge edge, AxisSpace space) {<a name="line.669"></a>
<FONT color="green">670</FONT>    <a name="line.670"></a>
<FONT color="green">671</FONT>            // create a new space object if one wasn't supplied...<a name="line.671"></a>
<FONT color="green">672</FONT>            if (space == null) {<a name="line.672"></a>
<FONT color="green">673</FONT>                space = new AxisSpace();<a name="line.673"></a>
<FONT color="green">674</FONT>            }<a name="line.674"></a>
<FONT color="green">675</FONT>            <a name="line.675"></a>
<FONT color="green">676</FONT>            // if the axis is not visible, no additional space is required...<a name="line.676"></a>
<FONT color="green">677</FONT>            if (!isVisible()) {<a name="line.677"></a>
<FONT color="green">678</FONT>                return space;<a name="line.678"></a>
<FONT color="green">679</FONT>            }<a name="line.679"></a>
<FONT color="green">680</FONT>    <a name="line.680"></a>
<FONT color="green">681</FONT>            // calculate the max size of the tick labels (if visible)...<a name="line.681"></a>
<FONT color="green">682</FONT>            double tickLabelHeight = 0.0;<a name="line.682"></a>
<FONT color="green">683</FONT>            double tickLabelWidth = 0.0;<a name="line.683"></a>
<FONT color="green">684</FONT>            if (isTickLabelsVisible()) {<a name="line.684"></a>
<FONT color="green">685</FONT>                g2.setFont(getTickLabelFont());<a name="line.685"></a>
<FONT color="green">686</FONT>                AxisState state = new AxisState();<a name="line.686"></a>
<FONT color="green">687</FONT>                // we call refresh ticks just to get the maximum width or height<a name="line.687"></a>
<FONT color="green">688</FONT>                refreshTicks(g2, state, plotArea, edge);<a name="line.688"></a>
<FONT color="green">689</FONT>                if (edge == RectangleEdge.TOP) {<a name="line.689"></a>
<FONT color="green">690</FONT>                    tickLabelHeight = state.getMax();<a name="line.690"></a>
<FONT color="green">691</FONT>                }<a name="line.691"></a>
<FONT color="green">692</FONT>                else if (edge == RectangleEdge.BOTTOM) {<a name="line.692"></a>
<FONT color="green">693</FONT>                    tickLabelHeight = state.getMax();<a name="line.693"></a>
<FONT color="green">694</FONT>                }<a name="line.694"></a>
<FONT color="green">695</FONT>                else if (edge == RectangleEdge.LEFT) {<a name="line.695"></a>
<FONT color="green">696</FONT>                    tickLabelWidth = state.getMax(); <a name="line.696"></a>
<FONT color="green">697</FONT>                }<a name="line.697"></a>
<FONT color="green">698</FONT>                else if (edge == RectangleEdge.RIGHT) {<a name="line.698"></a>
<FONT color="green">699</FONT>                    tickLabelWidth = state.getMax(); <a name="line.699"></a>
<FONT color="green">700</FONT>                }<a name="line.700"></a>
<FONT color="green">701</FONT>            }<a name="line.701"></a>
<FONT color="green">702</FONT>            <a name="line.702"></a>
<FONT color="green">703</FONT>            // get the axis label size and update the space object...<a name="line.703"></a>
<FONT color="green">704</FONT>            Rectangle2D labelEnclosure = getLabelEnclosure(g2, edge);<a name="line.704"></a>
<FONT color="green">705</FONT>            double labelHeight = 0.0;<a name="line.705"></a>
<FONT color="green">706</FONT>            double labelWidth = 0.0;<a name="line.706"></a>
<FONT color="green">707</FONT>            if (RectangleEdge.isTopOrBottom(edge)) {<a name="line.707"></a>
<FONT color="green">708</FONT>                labelHeight = labelEnclosure.getHeight();<a name="line.708"></a>
<FONT color="g