Java RectangleEdge.BOTTOM屬性代碼示例

/**
 * Calculates the anchor point for a tick label.
 * 
 * @param tick  the tick.
 * @param cursor  the cursor.
 * @param dataArea  the data area.
 * @param edge  the edge on which the axis is drawn.
 * 
 * @return The x and y coordinates of the anchor point.
 */
protected float[] calculateAnchorPoint(ValueTick tick, 
                                       double cursor, 
                                       Rectangle2D dataArea, 
                                       RectangleEdge edge) {

    RectangleInsets insets = getTickLabelInsets();
    float[] result = new float[2];
    if (edge == RectangleEdge.TOP) {
        result[0] = (float) valueToJava2D(tick.getValue(), dataArea, edge);
        result[1] = (float) (cursor - insets.getBottom() - 2.0);
    }
    else if (edge == RectangleEdge.BOTTOM) {
        result[0] = (float) valueToJava2D(tick.getValue(), dataArea, edge);
        result[1] = (float) (cursor + insets.getTop() + 2.0); 
    }
    else if (edge == RectangleEdge.LEFT) {
        result[0] = (float) (cursor - insets.getLeft() - 2.0);    
        result[1] = (float) valueToJava2D(tick.getValue(), dataArea, edge);
    }
    else if (edge == RectangleEdge.RIGHT) {
        result[0] = (float) (cursor + insets.getRight() + 2.0);    
        result[1] = (float) valueToJava2D(tick.getValue(), dataArea, edge);
    }
    return result;
}
 

/**
 * Calculates the size (width or height, depending on the location of the 
 * axis) of a category.
 *
 * @param categoryCount  the number of categories.
 * @param area  the area within which the categories will be drawn.
 * @param edge  the axis location.
 *
 * @return The category size.
 */
protected double calculateCategorySize(int categoryCount, Rectangle2D area,
                                       RectangleEdge edge) {

    double result = 0.0;
    double available = 0.0;

    if ((edge == RectangleEdge.TOP) || (edge == RectangleEdge.BOTTOM)) {
        available = area.getWidth();
    }
    else if ((edge == RectangleEdge.LEFT) 
            || (edge == RectangleEdge.RIGHT)) {
        available = area.getHeight();
    }
    if (categoryCount > 1) {
        result = available * (1 - getLowerMargin() - getUpperMargin() 
                 - getCategoryMargin());
        result = result / categoryCount;
    }
    else {
        result = available * (1 - getLowerMargin() - getUpperMargin());
    }
    return result;

}
 

/**
 * Draws an axis line at the current cursor position and edge.
 * 
 * @param g2  the graphics device.
 * @param cursor  the cursor position.
 * @param dataArea  the data area.
 * @param edge  the edge.
 */
protected void drawAxisLine(Graphics2D g2, double cursor,
        Rectangle2D dataArea, RectangleEdge edge) {
    
    Line2D axisLine = null;
    if (edge == RectangleEdge.TOP) {
        axisLine = new Line2D.Double(dataArea.getX(), cursor, 
                dataArea.getMaxX(), cursor);  
    }
    else if (edge == RectangleEdge.BOTTOM) {
        axisLine = new Line2D.Double(dataArea.getX(), cursor, 
                dataArea.getMaxX(), cursor);  
    }
    else if (edge == RectangleEdge.LEFT) {
        axisLine = new Line2D.Double(cursor, dataArea.getY(), cursor, 
                dataArea.getMaxY());  
    }
    else if (edge == RectangleEdge.RIGHT) {
        axisLine = new Line2D.Double(cursor, dataArea.getY(), cursor, 
                dataArea.getMaxY());  
    }
    g2.setPaint(this.axisLinePaint);
    g2.setStroke(this.axisLineStroke);
    g2.draw(axisLine);
    
}
 

/**
 * Adds a block to the arrangement manager at the specified edge.
 * 
 * @param block  the block (<code>null</code> permitted).
 * @param key  the edge (an instance of {@link RectangleEdge}) or 
 *             <code>null</code> for the center block.
 */
public void add(Block block, Object key) {
    
    if (key == null) {
        this.centerBlock = block;
    }
    else {
        RectangleEdge edge = (RectangleEdge) key;
        if (edge == RectangleEdge.TOP) {
            this.topBlock = block;
        }
        else if (edge == RectangleEdge.BOTTOM) {
            this.bottomBlock = block;
        }
        else if (edge == RectangleEdge.LEFT) {
            this.leftBlock = block;
        }
        else if (edge == RectangleEdge.RIGHT) {
            this.rightBlock = block;
        }
    }
}
 

/**
 * Draws an axis line at the current cursor position and edge.
 * 
 * @param g2  the graphics device.
 * @param cursor  the cursor position.
 * @param dataArea  the data area.
 * @param edge  the edge.
 */
protected void drawAxisLine(Graphics2D g2, double cursor,
        Rectangle2D dataArea, RectangleEdge edge) {
    
    Line2D axisLine = null;
    if (edge == RectangleEdge.TOP) {
        axisLine = new Line2D.Double(dataArea.getX(), cursor, dataArea.getMaxX(), cursor);  
    }
    else if (edge == RectangleEdge.BOTTOM) {
        axisLine = new Line2D.Double(dataArea.getX(), cursor, dataArea.getMaxX(), cursor);  
    }
    else if (edge == RectangleEdge.LEFT) {
        axisLine = new Line2D.Double(cursor, dataArea.getY(), cursor, dataArea.getMaxY());  
    }
    else if (edge == RectangleEdge.RIGHT) {
        axisLine = new Line2D.Double(cursor, dataArea.getY(), cursor, dataArea.getMaxY());  
    }
    g2.setPaint(this.axisLinePaint);
    g2.setStroke(this.axisLineStroke);
    g2.draw(axisLine);
    
}
 

/**
 * Calculates the size (width or height, depending on the location of the axis) of a category
 * gap.
 *
 * @param categoryCount  the number of categories.
 * @param area  the area within which the categories will be drawn.
 * @param edge  the axis location.
 *
 * @return the category gap width.
 */
protected double calculateCategoryGapSize(int categoryCount, Rectangle2D area,
                                          RectangleEdge edge) {

    double result = 0.0;
    double available = 0.0;

    if ((edge == RectangleEdge.TOP) || (edge == RectangleEdge.BOTTOM)) {
        available = area.getWidth();
    }
    else if ((edge == RectangleEdge.LEFT) || (edge == RectangleEdge.RIGHT)) {
        available = area.getHeight();
    }

    if (categoryCount > 1) {
        result = available * getCategoryMargin() / (categoryCount - 1);
    }

    return result;

}
 

/**
 * Calculates the size (width or height, depending on the location of the 
 * axis) of a category gap.
 *
 * @param categoryCount  the number of categories.
 * @param area  the area within which the categories will be drawn.
 * @param edge  the axis location.
 *
 * @return The category gap width.
 */
protected double calculateCategoryGapSize(int categoryCount, 
                                          Rectangle2D area,
                                          RectangleEdge edge) {

    double result = 0.0;
    double available = 0.0;

    if ((edge == RectangleEdge.TOP) || (edge == RectangleEdge.BOTTOM)) {
        available = area.getWidth();
    }
    else if ((edge == RectangleEdge.LEFT) 
            || (edge == RectangleEdge.RIGHT)) {
        available = area.getHeight();
    }

    if (categoryCount > 1) {
        result = available * getCategoryMargin() / (categoryCount - 1);
    }

    return result;

}
 

/**
 * Draws the title on a Java 2D graphics device (such as the screen or a printer).
 *
 * @param g2  the graphics device.
 * @param titleArea  the area within which the title (and plot) should be drawn.
 */
public void draw(Graphics2D g2, Rectangle2D titleArea) {

    RectangleEdge position = getPosition();
    if (position == RectangleEdge.TOP || position == RectangleEdge.BOTTOM) {
        drawHorizontal(g2, titleArea);
    }
    else if (position == RectangleEdge.LEFT || position == RectangleEdge.RIGHT) {
        drawVertical(g2, titleArea);
    }
    else {
        throw new RuntimeException("ImageTitle.draw(...) - invalid title position.");
    }
}
 

/**
 * Draws the title on a Java 2D graphics device (such as the screen or a 
 * printer).
 *
 * @param g2  the graphics device.
 * @param titleArea  the area within which the title (and plot) should be 
 *                   drawn.
 */
public void draw(Graphics2D g2, Rectangle2D titleArea) {

    RectangleEdge position = getPosition();
    if (position == RectangleEdge.TOP || position == RectangleEdge.BOTTOM) {
        drawHorizontal(g2, titleArea);
    }
    else if (position == RectangleEdge.LEFT 
                 || position == RectangleEdge.RIGHT) {
        drawVertical(g2, titleArea);
    }
    else {
        throw new RuntimeException("Invalid title position.");
    }
}
 

/**
 * Ensures there is a minimum amount of space at the edge corresponding to 
 * the specified axis location.
 * 
 * @param space  the space.
 * @param edge  the location.
 */
public void ensureAtLeast(double space, RectangleEdge edge) {
    if (edge == RectangleEdge.TOP) {
        if (this.top < space) {
            this.top = space;
        }
    }
    else if (edge == RectangleEdge.BOTTOM) {
        if (this.bottom < space) {
            this.bottom = space;
        }
    }
    else if (edge == RectangleEdge.LEFT) {
        if (this.left < space) {
            this.left = space;
        }
    }
    else if (edge == RectangleEdge.RIGHT) {
        if (this.right < space) {
            this.right = space;
        }
    }
    else {
        throw new IllegalStateException(
            "AxisSpace.ensureAtLeast(): unrecognised AxisLocation."
        );
    }
}
 

/**
 * Calculates the reserved area.
 * 
 * @param area  the area.
 * @param edge  the edge.
 * 
 * @return The reserved area.
 */
public Rectangle2D reserved(Rectangle2D area, RectangleEdge edge) {
    Rectangle2D result = null;
    if (edge == RectangleEdge.TOP) {
        result = new Rectangle2D.Double(
            area.getX(), area.getY(), area.getWidth(), this.top
        );
    }
    else if (edge == RectangleEdge.BOTTOM) {
        result = new Rectangle2D.Double(
            area.getX(), area.getMaxY() - this.top,
            area.getWidth(), this.bottom
        );
    }
    else if (edge == RectangleEdge.LEFT) {
        result = new Rectangle2D.Double(
            area.getX(), area.getY(), this.left, area.getHeight()
        );
    }
    else if (edge == RectangleEdge.RIGHT) {
        result = new Rectangle2D.Double(
            area.getMaxX() - this.right, area.getY(),
            this.right, area.getHeight()
        );
    }
    return result;
}
 

/**
 * Draws a the title horizontally within the specified area.  This method will be called
 * from the {@link #draw(Graphics2D, Rectangle2D) draw} method.
 * 
 * @param g2  the graphics device.
 * @param area  the area for the title.
 */
protected void drawHorizontal(Graphics2D g2, Rectangle2D area) {
    Rectangle2D titleArea = (Rectangle2D) area.clone();
    getSpacer().trim(titleArea);
    g2.setFont(this.font);
    g2.setPaint(this.paint);
    TextBlock title = TextUtilities.createTextBlock(
        this.text, this.font, this.paint, (float) titleArea.getWidth(), new G2TextMeasurer(g2)
    );
    TextBlockAnchor anchor = null;
    float x = 0.0f;
    HorizontalAlignment horizontalAlignment = getHorizontalAlignment();
    if (horizontalAlignment == HorizontalAlignment.LEFT) {
        x = (float) titleArea.getX();
        anchor = TextBlockAnchor.TOP_LEFT;
    }
    else if (horizontalAlignment == HorizontalAlignment.RIGHT) {
        x = (float) titleArea.getMaxX();
        anchor = TextBlockAnchor.TOP_RIGHT;
    }
    else if (horizontalAlignment == HorizontalAlignment.CENTER) {
        x = (float) titleArea.getCenterX();
        anchor = TextBlockAnchor.TOP_CENTER;
    }
    float y = 0.0f;
    RectangleEdge position = getPosition();
    if (position == RectangleEdge.TOP) {
        y = (float) titleArea.getY();
    }
    else if (position == RectangleEdge.BOTTOM) {
        y = (float) titleArea.getMaxY();
        if (horizontalAlignment == HorizontalAlignment.LEFT) {
            anchor = TextBlockAnchor.BOTTOM_LEFT;
        }
        else if (horizontalAlignment == HorizontalAlignment.CENTER) {
            anchor = TextBlockAnchor.BOTTOM_CENTER;
        }
        else if (horizontalAlignment == HorizontalAlignment.RIGHT) {
            anchor = TextBlockAnchor.BOTTOM_RIGHT;
        }
    }
    title.draw(g2, x, y, anchor);
}
 

/**
 * Returns the Java 2D coordinate for a category.
 * 
 * @param anchor  the anchor point.
 * @param category  the category index.
 * @param categoryCount  the category count.
 * @param area  the data area.
 * @param edge  the location of the axis.
 * 
 * @return the coordinate.
 */
public double getCategoryJava2DCoordinate(CategoryAnchor anchor, 
                                          int category, 
                                          int categoryCount, 
                                          Rectangle2D area,
                                          RectangleEdge edge) {

    double result = 0.0;
    Rectangle2D adjustedArea = area;
    CategoryPlot plot = (CategoryPlot) getPlot();
    CategoryItemRenderer renderer = plot.getRenderer();
    if (renderer instanceof Effect3D) {
        Effect3D e3D = (Effect3D) renderer;
        double adjustedX = area.getMinX();
        double adjustedY = area.getMinY();
        double adjustedW = area.getWidth() - e3D.getXOffset();
        double adjustedH = area.getHeight() - e3D.getYOffset();

        if (edge == RectangleEdge.LEFT || edge == RectangleEdge.BOTTOM) {
            adjustedY += e3D.getYOffset();
        }
        else if (edge == RectangleEdge.RIGHT || edge == RectangleEdge.TOP) {
            adjustedX += e3D.getXOffset();
        }
        adjustedArea = new Rectangle2D.Double(
            adjustedX, adjustedY, adjustedW, adjustedH
        );
    }

    if (anchor == CategoryAnchor.START) {
        result = getCategoryStart(category, categoryCount, adjustedArea, edge);
    }
    else if (anchor == CategoryAnchor.MIDDLE) {
        result = getCategoryMiddle(category, categoryCount, adjustedArea, edge);
    }
    else if (anchor == CategoryAnchor.END) {
        result = getCategoryEnd(category, categoryCount, adjustedArea, edge);
    }
    return result;
                                                  
}
 

/**
 * Resolves a range axis location for a given plot orientation.
 *
 * @param location  the location (<code>null</code> not permitted).
 * @param orientation  the orientation (<code>null</code> not permitted).
 *
 * @return The edge (never <code>null</code>).
 */
public static RectangleEdge resolveRangeAxisLocation(
        AxisLocation location, PlotOrientation orientation) {

    if (location == null) {
        throw new IllegalArgumentException("Null 'location' argument.");   
    }
    if (orientation == null) {
        throw new IllegalArgumentException("Null 'orientation' argument.");
    }

    RectangleEdge result = null;
    
    if (location == AxisLocation.TOP_OR_RIGHT) {
        if (orientation == PlotOrientation.HORIZONTAL) {
            result = RectangleEdge.TOP;
        }
        else if (orientation == PlotOrientation.VERTICAL) {
            result = RectangleEdge.RIGHT;
        }
    }
    else if (location == AxisLocation.TOP_OR_LEFT) {
        if (orientation == PlotOrientation.HORIZONTAL) {
            result = RectangleEdge.TOP;
        }
        else if (orientation == PlotOrientation.VERTICAL) {
            result = RectangleEdge.LEFT;
        }
    }
    else if (location == AxisLocation.BOTTOM_OR_RIGHT) {
        if (orientation == PlotOrientation.HORIZONTAL) {
            result = RectangleEdge.BOTTOM;
        }
        else if (orientation == PlotOrientation.VERTICAL) {
            result = RectangleEdge.RIGHT;
        }
    }
    else if (location == AxisLocation.BOTTOM_OR_LEFT) {
        if (orientation == PlotOrientation.HORIZONTAL) {
            result = RectangleEdge.BOTTOM;
        }
        else if (orientation == PlotOrientation.VERTICAL) {
            result = RectangleEdge.LEFT;
        }
    }

    // the above should cover all the options...
    if (result == null) {
        throw new IllegalStateException("resolveRangeAxisLocation()");
    }
    return result;
    
}
 

/**
 * Draws the axis on a Java 2D graphics device (such as the screen or a 
 * printer).
 *
 * @param g2  the graphics device.
 * @param cursor  the cursor.
 * @param plotArea  the area for drawing the axes and data.
 * @param dataArea  the area for drawing the data (a subset of the 
 *                  plotArea).
 * @param edge  the axis location.
 * @param plotState  collects information about the plot (<code>null</code>
 *                   permitted).
 * 
 * @return The updated cursor value.
 */
public AxisState draw(Graphics2D g2, double cursor, Rectangle2D plotArea, 
        Rectangle2D dataArea, RectangleEdge edge, 
        PlotRenderingInfo plotState) {

    // if the axis is not visible, don't draw it...
    if (!isVisible()) {
        AxisState state = new AxisState(cursor);
        // even though the axis is not visible, we need ticks for the 
        // gridlines...
        List ticks = refreshTicks(g2, state, dataArea, edge); 
        state.setTicks(ticks);
        return state;
    }

    // calculate the adjusted data area taking into account the 3D effect...
    double xOffset = 0.0;
    double yOffset = 0.0;
    Plot plot = getPlot();
    if (plot instanceof CategoryPlot) {
        CategoryPlot cp = (CategoryPlot) plot;
        CategoryItemRenderer r = cp.getRenderer();
        if (r instanceof Effect3D) {
            Effect3D e3D = (Effect3D) r;
            xOffset = e3D.getXOffset();
            yOffset = e3D.getYOffset();
        }
    }

    double adjustedX = dataArea.getMinX();
    double adjustedY = dataArea.getMinY();
    double adjustedW = dataArea.getWidth() - xOffset;
    double adjustedH = dataArea.getHeight() - yOffset;

    if (edge == RectangleEdge.LEFT || edge == RectangleEdge.BOTTOM) {
        adjustedY += yOffset;
    }
    else if (edge == RectangleEdge.RIGHT || edge == RectangleEdge.TOP) {
        adjustedX += xOffset;
    }
    Rectangle2D adjustedDataArea = new Rectangle2D.Double(adjustedX, 
            adjustedY, adjustedW, adjustedH);

    // draw the tick marks and labels...
    AxisState info = drawTickMarksAndLabels(g2, cursor, plotArea, 
            adjustedDataArea, edge);
   
    // draw the axis label...
    info = drawLabel(getLabel(), g2, plotArea, dataArea, edge, info);

    return info;
    
}