cyclicnumberaxis.java

来自「JfreeChart 常用图表例子」· Java 代码 · 共 1,209 行 · 第 1/3 页

        return super.calculateAnchorPoint(tick, cursor, dataArea, edge);
    }
    
    
    
    /**
     * Builds a list of ticks for the axis.  This method is called when the 
     * axis is at the top or bottom of the chart (so the axis is "horizontal").
     * 
     * @param g2  the graphics device.
     * @param dataArea  the data area.
     * @param edge  the edge.
     * 
     * @return A list of ticks.
     */
    protected List refreshTicksHorizontal(Graphics2D g2, 
                                          Rectangle2D dataArea, 
                                          RectangleEdge edge) {

        List result = new java.util.ArrayList();

        Font tickLabelFont = getTickLabelFont();
        g2.setFont(tickLabelFont);
        
        if (isAutoTickUnitSelection()) {
            selectAutoTickUnit(g2, dataArea, edge);
        }

        double unit = getTickUnit().getSize();
        double cycleBound = getCycleBound();
        double currentTickValue = Math.ceil(cycleBound / unit) * unit;
        double upperValue = getRange().getUpperBound();
        boolean cycled = false;

        boolean boundMapping = this.boundMappedToLastCycle; 
        this.boundMappedToLastCycle = false; 
        
        CycleBoundTick lastTick = null; 
        float lastX = 0.0f;

        if (upperValue == cycleBound) {
            currentTickValue = calculateLowestVisibleTickValue();
            cycled = true;
            this.boundMappedToLastCycle = true;
        }
        
        while (currentTickValue <= upperValue) {
            
            // Cycle when necessary
            boolean cyclenow = false;
            if ((currentTickValue + unit > upperValue) && !cycled) {
                cyclenow = true;
            }
            
            double xx = valueToJava2D(currentTickValue, dataArea, edge);
            String tickLabel;
            NumberFormat formatter = getNumberFormatOverride();
            if (formatter != null) {
                tickLabel = formatter.format(currentTickValue);
            }
            else {
                tickLabel = getTickUnit().valueToString(currentTickValue);
            }
            float x = (float) xx;
            TextAnchor anchor = null;
            TextAnchor rotationAnchor = null;
            double angle = 0.0;
            if (isVerticalTickLabels()) {
                if (edge == RectangleEdge.TOP) {
                    angle = Math.PI / 2.0;
                }
                else {
                    angle = -Math.PI / 2.0;
                }
                anchor = TextAnchor.CENTER_RIGHT;
                // If tick overlap when cycling, update last tick too
                if ((lastTick != null) && (lastX == x) 
                        && (currentTickValue != cycleBound)) {
                    anchor = isInverted() 
                        ? TextAnchor.TOP_RIGHT : TextAnchor.BOTTOM_RIGHT;
                    result.remove(result.size() - 1);
                    result.add(new CycleBoundTick(
                        this.boundMappedToLastCycle, lastTick.getNumber(), 
                        lastTick.getText(), anchor, anchor, 
                        lastTick.getAngle())
                    );
                    this.internalMarkerWhenTicksOverlap = true;
                    anchor = isInverted() 
                        ? TextAnchor.BOTTOM_RIGHT : TextAnchor.TOP_RIGHT;
                }
                rotationAnchor = anchor;
            }
            else {
                if (edge == RectangleEdge.TOP) {
                    anchor = TextAnchor.BOTTOM_CENTER; 
                    if ((lastTick != null) && (lastX == x) 
                            && (currentTickValue != cycleBound)) {
                        anchor = isInverted() 
                            ? TextAnchor.BOTTOM_LEFT : TextAnchor.BOTTOM_RIGHT;
                        result.remove(result.size() - 1);
                        result.add(new CycleBoundTick(
                            this.boundMappedToLastCycle, lastTick.getNumber(),
                            lastTick.getText(), anchor, anchor, 
                            lastTick.getAngle())
                        );
                        this.internalMarkerWhenTicksOverlap = true;
                        anchor = isInverted() 
                            ? TextAnchor.BOTTOM_RIGHT : TextAnchor.BOTTOM_LEFT;
                    }
                    rotationAnchor = anchor;
                }
                else {
                    anchor = TextAnchor.TOP_CENTER; 
                    if ((lastTick != null) && (lastX == x) 
                            && (currentTickValue != cycleBound)) {
                        anchor = isInverted() 
                            ? TextAnchor.TOP_LEFT : TextAnchor.TOP_RIGHT;
                        result.remove(result.size() - 1);
                        result.add(new CycleBoundTick(
                            this.boundMappedToLastCycle, lastTick.getNumber(),
                            lastTick.getText(), anchor, anchor, 
                            lastTick.getAngle())
                        );
                        this.internalMarkerWhenTicksOverlap = true;
                        anchor = isInverted() 
                            ? TextAnchor.TOP_RIGHT : TextAnchor.TOP_LEFT;
                    }
                    rotationAnchor = anchor;
                }
            }

            CycleBoundTick tick = new CycleBoundTick(
                this.boundMappedToLastCycle, 
                new Double(currentTickValue), tickLabel, anchor, 
                rotationAnchor, angle
            );
            if (currentTickValue == cycleBound) {
                this.internalMarkerCycleBoundTick = tick; 
            }
            result.add(tick);
            lastTick = tick;
            lastX = x;
            
            currentTickValue += unit;
            
            if (cyclenow) {
                currentTickValue = calculateLowestVisibleTickValue();
                upperValue = cycleBound;
                cycled = true;
                this.boundMappedToLastCycle = true; 
            }

        }
        this.boundMappedToLastCycle = boundMapping; 
        return result;
        
    }

    /**
     * Builds a list of ticks for the axis.  This method is called when the 
     * axis is at the left or right of the chart (so the axis is "vertical").
     * 
     * @param g2  the graphics device.
     * @param dataArea  the data area.
     * @param edge  the edge.
     * 
     * @return A list of ticks.
     */
    protected List refreshVerticalTicks(Graphics2D g2, 
                                        Rectangle2D dataArea, 
                                        RectangleEdge edge) {
        
        List result = new java.util.ArrayList();
        result.clear();

        Font tickLabelFont = getTickLabelFont();
        g2.setFont(tickLabelFont);
        if (isAutoTickUnitSelection()) {
            selectAutoTickUnit(g2, dataArea, edge);
        }

        double unit = getTickUnit().getSize();
        double cycleBound = getCycleBound();
        double currentTickValue = Math.ceil(cycleBound / unit) * unit;
        double upperValue = getRange().getUpperBound();
        boolean cycled = false;

        boolean boundMapping = this.boundMappedToLastCycle; 
        this.boundMappedToLastCycle = true; 

        NumberTick lastTick = null;
        float lastY = 0.0f;

        if (upperValue == cycleBound) {
            currentTickValue = calculateLowestVisibleTickValue();
            cycled = true;
            this.boundMappedToLastCycle = true;
        }
        
        while (currentTickValue <= upperValue) {
            
            // Cycle when necessary
            boolean cyclenow = false;
            if ((currentTickValue + unit > upperValue) && !cycled) {
                cyclenow = true;
            }

            double yy = valueToJava2D(currentTickValue, dataArea, edge);
            String tickLabel;
            NumberFormat formatter = getNumberFormatOverride();
            if (formatter != null) {
                tickLabel = formatter.format(currentTickValue);
            }
            else {
                tickLabel = getTickUnit().valueToString(currentTickValue);
            }

            float y = (float) yy;
            TextAnchor anchor = null;
            TextAnchor rotationAnchor = null;
            double angle = 0.0;
            if (isVerticalTickLabels()) {

                if (edge == RectangleEdge.LEFT) {
                    anchor = TextAnchor.BOTTOM_CENTER; 
                    if ((lastTick != null) && (lastY == y) 
                            && (currentTickValue != cycleBound)) {
                        anchor = isInverted() 
                            ? TextAnchor.BOTTOM_LEFT : TextAnchor.BOTTOM_RIGHT;
                        result.remove(result.size() - 1);
                        result.add(new CycleBoundTick(
                            this.boundMappedToLastCycle, lastTick.getNumber(),
                            lastTick.getText(), anchor, anchor, 
                            lastTick.getAngle())
                        );
                        this.internalMarkerWhenTicksOverlap = true;
                        anchor = isInverted() 
                            ? TextAnchor.BOTTOM_RIGHT : TextAnchor.BOTTOM_LEFT;
                    }
                    rotationAnchor = anchor;
                    angle = -Math.PI / 2.0;
                }
                else {
                    anchor = TextAnchor.BOTTOM_CENTER; 
                    if ((lastTick != null) && (lastY == y) 
                            && (currentTickValue != cycleBound)) {
                        anchor = isInverted() 
                            ? TextAnchor.BOTTOM_RIGHT : TextAnchor.BOTTOM_LEFT;
                        result.remove(result.size() - 1);
                        result.add(new CycleBoundTick(
                            this.boundMappedToLastCycle, lastTick.getNumber(),
                            lastTick.getText(), anchor, anchor, 
                            lastTick.getAngle())
                        );
                        this.internalMarkerWhenTicksOverlap = true;
                        anchor = isInverted() 
                            ? TextAnchor.BOTTOM_LEFT : TextAnchor.BOTTOM_RIGHT;
                    }
                    rotationAnchor = anchor;
                    angle = Math.PI / 2.0;
                }
            }
            else {
                if (edge == RectangleEdge.LEFT) {
                    anchor = TextAnchor.CENTER_RIGHT; 
                    if ((lastTick != null) && (lastY == y) 
                            && (currentTickValue != cycleBound)) {
                        anchor = isInverted() 
                            ? TextAnchor.BOTTOM_RIGHT : TextAnchor.TOP_RIGHT;
                        result.remove(result.size() - 1);
                        result.add(new CycleBoundTick(
                            this.boundMappedToLastCycle, lastTick.getNumber(),
                            lastTick.getText(), anchor, anchor, 
                            lastTick.getAngle())
                        );
                        this.internalMarkerWhenTicksOverlap = true;
                        anchor = isInverted() 
                            ? TextAnchor.TOP_RIGHT : TextAnchor.BOTTOM_RIGHT;
                    }
                    rotationAnchor = anchor;
                }
                else {
                    anchor = TextAnchor.CENTER_LEFT; 
                    if ((lastTick != null) && (lastY == y) 
                            && (currentTickValue != cycleBound)) {
                        anchor = isInverted() 
                            ? TextAnchor.BOTTOM_LEFT : TextAnchor.TOP_LEFT;
                        result.remove(result.size() - 1);
                        result.add(new CycleBoundTick(
                            this.boundMappedToLastCycle, lastTick.getNumber(),
                            lastTick.getText(), anchor, anchor, 
                            lastTick.getAngle())
                        );
                        this.internalMarkerWhenTicksOverlap = true;
                        anchor = isInverted() 
                            ? TextAnchor.TOP_LEFT : TextAnchor.BOTTOM_LEFT;
                    }
                    rotationAnchor = anchor;
                }
            }

            CycleBoundTick tick = new CycleBoundTick(
                this.boundMappedToLastCycle, new Double(currentTickValue), 
                tickLabel, anchor, rotationAnchor, angle
            );
            if (currentTickValue == cycleBound) {
                this.internalMarkerCycleBoundTick = tick; 
            }
            result.add(tick);
            lastTick = tick;
            lastY = y;
            
            if (currentTickValue == cycleBound) {
                this.internalMarkerCycleBoundTick = tick;
            }

            currentTickValue += unit;
            
            if (cyclenow) {
                currentTickValue = calculateLowestVisibleTickValue();
                upperValue = cycleBound;
                cycled = true;
                this.boundMappedToLastCycle = false; 
            }

        }
        this.boundMappedToLastCycle = boundMapping; 
        return result;
    }
    
    /**
     * Converts a coordinate from Java 2D space to data space.
     * 
     * @param java2DValue  the coordinate in Java2D space.
     * @param dataArea  the data area.
     * @param edge  the edge.
     * 
     * @return The data value.
     */
    public double java2DToValue(double java2DValue, Rectangle2D dataArea, 
                                RectangleEdge edge) {
        Range range = getRange();
        
        double vmax = range.getUpperBound();
        double vp = getCycleBound();

        double jmin = 0.0;
        double jmax = 0.0;
        if (RectangleEdge.isTopOrBottom(edge)) {
            jmin = dataArea.getMinX();
            jmax = dataArea.getMaxX();
        }
        else if (RectangleEdge.isLeftOrRight(edge)) {
            jmin = dataArea.getMaxY();
            jmax = dataArea.getMinY();
        }
        
        if (isInverted()) {
            double jbreak = jmax - (vmax - vp) * (jmax - jmin) / this.period;
            if (java2DValue >= jbreak) { 
                return vp + (jmax - java2DValue) * this.period / (jmax - jmin);
            } 
            else {
                return vp - (java2DValue - jmin) * this.period / (jmax - jmin);
            }
        }
        else {
            double jbreak = (vmax - vp) * (jmax - jmin) / this.period + jmin;
            if (java2DValue <= jbreak) { 
                return vp + (java2DValue - jmin) * this.period / (jmax - jmin);
            } 
            else {
                return vp - (jmax - java2DValue) * this.period / (jmax - jmin);
            }
        }
    }
    
    /**
     * Translates a value from data space to Java 2D space.
     * 
     * @param value  the data value.
     * @param dataArea  the data area.
     * @param edge  the edge.
     * 
     * @return The Java 2D value.
     */
    public double valueToJava2D(double value, Rectangle2D dataArea, 
                                RectangleEdge edge) {
        Range range = getRange();
        
        double vmin = range.getLowerBound();
        double vmax = range.getUpperBound();
        double vp = getCycleBound();

        if ((value < vmin) || (value > vmax)) {
            return Double.NaN;
        }
        
        
        double jmin = 0.0;
        double jmax = 0.0;
        if (RectangleEdge.isTopOrBottom(edge)) {
            jmin = dataArea.getMinX();