Example usage for java.awt Graphics drawImage

Introduction

In this page you can find the example usage for java.awt Graphics drawImage.

Prototype

public abstract boolean drawImage(Image img, int x, int y, int width, int height, Color bgcolor,
        ImageObserver observer);

Source Link

Document

Draws as much of the specified image as has already been scaled to fit inside the specified rectangle.

Usage

From source file:Main.java

public void paint(Graphics g) {
    Image img = createImage();
    g.drawImage(img, 20, 20, 400, 400, Color.RED, this);
}

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From source file:edu.purdue.cc.bionet.ui.HeatMap.java

/**
 * This method retrieves a heatmap image from jfreechart and places it on the panel
 * along with black divider lines and labels to create a heat map graph.
 * //from   w  w  w. j av  a 2s.  c  o  m
 * @param g The Graphics for the jpanel.
 */
public void paintComponent(Graphics g) {
    super.paintComponent(g);

    if (moleculeList.size() > 0) {
        float tickStep;
        BufferedImage drawing = HeatMapUtilities.createHeatMapImage(this.getDataset(), this.spectrum);
        int leftEdge = this.getWidth() / 8;
        int topEdge = this.getHeight() / 32;
        int bottomEdge = this.getHeight() * 7 / 8;
        int rightEdge = this.getWidth() * 31 / 32;
        mapPosition = new Rectangle(leftEdge, topEdge, rightEdge - leftEdge, bottomEdge - topEdge);
        g.drawImage(drawing, leftEdge, topEdge, rightEdge - leftEdge, bottomEdge - topEdge,
                this.getBackground(), this);
        // y-axis
        int yAxisPos = leftEdge - 1;
        //      g.drawLine( yAxisPos, topEdge, yAxisPos, bottomEdge );
        tickStep = (bottomEdge - topEdge) / (float) moleculeList.size();
        for (int i = 0; i <= moleculeList.size(); i++) {
            int tickY = Math.round(topEdge + i * tickStep);
            g.drawLine(rightEdge, tickY, yAxisPos - tickSize, tickY);
            if (i < moleculeList.size()) {
                String name = this.moleculeList.get(this.moleculeList.size() - 1 - i).toString();
                g.drawString(name, yAxisPos - 4 - g.getFontMetrics().stringWidth(name),
                        (int) (tickY + tickStep));
            }
        }

        // x-axis
        int xAxisPos = bottomEdge;
        tickStep = (rightEdge - leftEdge) / (float) moleculeList.size();
        //      g.drawLine( leftEdge, xAxisPos, rightEdge, xAxisPos );
        for (int i = 0; i <= moleculeList.size(); i++) {
            int tickX = (int) (leftEdge + i * tickStep);
            g.drawLine(tickX, topEdge, tickX, xAxisPos + tickSize);
        }
        // transform clockwise 90 degrees for the vertical text
        AffineTransform at = new AffineTransform();
        at.quadrantRotate(3);
        Graphics2D g2d = (Graphics2D) g.create();
        g2d.transform(at);
        for (int i = 0; i < moleculeList.size(); i++) {
            int tickX = Math.round(leftEdge + i * tickStep);
            String name = this.moleculeList.get(i).toString();
            g2d.drawString(name, -(int) (xAxisPos + 4 + g.getFontMetrics().stringWidth(name)),
                    (int) (tickX + tickStep));
        }
    }
}

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