| Working with Graphics

## Displaying Images

> Here is a code example that displays an image at its normal size in the upper left corner of the Component area (0, 0):

> >     g.drawImage(image, 0, 0, this);

> Here is a code example that displays an image scaled to be 300 pixels wide and 62 pixels tall, starting at the coordinates (90, 0):

> >     g.drawImage(myImage, 90, 0, 300, 62, this);

> Below is an applet that loads a single image and displays it twice, using both code examples that you see above. Here is the full code for the program.

> Your applet browser doesn't understand the <APPLET> tag. Here's what you'd see if it did:

> The Graphics class declares the following `drawImage()` methods. They all return a boolean value, although this value is rarely used. The return value is `true` if the image has been completely loaded and thus completely drawn; otherwise, it's `false`.

> - `public abstract boolean drawImage(Image img, int x, int y, ImageObserver observer)`
> - `public abstract boolean drawImage(Image img, int x, int y, int width, int height, ImageObserver observer)`
> - `public abstract boolean drawImage(Image img, int x, int y, Color bgcolor, ImageObserver observer)`
> - `public abstract boolean drawImage(Image img, int x, int y, int width, int height, Color bgcolor, ImageObserver observer)`
> The `drawImage()` methods have the following arguments:
> `Image img`
>   The image to draw.
> `int x, int y`
>   The coordinates of the upper left corner of the image.
> `int width, int height`
>   The width and height (in pixels) of the image.
> `Color bgcolor`
>   The color to draw underneath the image. This can be useful if the image contains transparent pixels and you know that the image will be displayed against a solid background of the indicated color.
> `ImageObserver observer`
>   An object that implements the ImageObserver interface. This registers the object as the image observer so that it's notified whenever new information about the image becomes available. Most components can simply specify `this`.
> The reason why `this` works as the image observer is that the Component class implements the ImageObserver interface. Its implementation invokes the `repaint()` method as the image data is loaded, which is usually what you want to happen.

> The `drawImage()` method returns after displaying the image data that has been loaded, so far. If you want to make sure that `drawImage()` draws only complete images, then you must track image loading. See the previous page for information on tracking image loading.

| Working with Graphics