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Android - A layout that arranges its children in relation to a background image

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A layout that arranges its children in relation to a background image. The layout of each child is specified in image coordinates (pixels), and the conversion to screen coordinates is performed automatically.

The background image is adjusted so that it fills the available space.

For some applications this might be a useful replacement for the now deprecated AbsoluteLayout.

Example Image

Try out the sample application:

Android app on Google Play

Or browse the source code of the sample application for a complete example of use.

Including in your project

If you’re using Eclipse with the ADT plugin you can include ImageLayout as a library project. Just create a new Android project in Eclipse using the library/ folder as the existing source, and add a reference to it to your application project.

If you use gradle to build your Android project you can simply add a dependency for this library:

dependencies {  
    compile 'com.github.manuelpeinado.imagelayout:imagelayout:1.1.0'


Adding to your layout

Add an element named com.manuelpeinado.imagelayout.ImageLayout to your XML layout. This element should have the following attributes:

| Attribute | Description | |------------------------|------------------------------------| | custom:image | The drawable to be used as the background for the view.| | custom:imageWidth
custom:imageHeight | The dimensions of the image in which the layout coordinates of the children are expressed. |

In addition, you can use the following optional attributes:

| Attribute | Description | |------------------------|------------------------------------| | custom:fit | Determines how the background image is drawn. Accepted values are vertical, horizontal, both and auto (the default). Check the "Fit attribute" sample in the demo application to see these different modes in action.|

Adding children

You can add child views to your ImageLayout just like you would to any other ViewGroup. But instead of using the android:layoutwidth and android:layoutheight attributes to control the layout of children, you should use the following:

|Attribute |Description | |--------------------------|-------------| | custom:layoutwidth
custom:layoutheight | Similar to android:layoutwidth/height, but expressed in image coordinates | |custom:layoutmaxWidth
custom:layoutmaxHeight| Similar to android:layoutmaxWidth/maxHeight, but expressed in image coordinates. | | custom:layoutcenterX
custom:layoutcenterY|Center of the child view, in image coordinates.| |custom:layoutleft
custom:layoutbottom|Bounds of the child view, in image coordinates.|

Note that depending of your application you will use a different combination of these attributes. You might for example specify a value for custom:right in order to align the right side of your view with a given feature of the image, and custom:centerY to align the same view vertically with another feature.

Also note that the size-related attributes such as custom:layout_width are not mandatory. If you don't specify any of them for a given dimension, the view is measured in the traditional "wrap content" fashion.

View size adjustment

You can have your ImageLayout fill its parent by specifying matchparent in both its android:layoutwidth and android:layout_height attributes. But, since the aspect ratio of the image will typically differ from the aspect of ratio of the parent view, this will result in a waste of screen real state in the form of blank margins around the image.

To prevent this, simply use wrapcontent in either android:layoutwidth or android:layout_height. This will cause the ImageLayout to adopt a size which matches the aspect ratio of its image.

Please note that the result of using wrapcontent for both android:layoutwidth and android:layout_height is unspecified.

Who's using it

Does your app use ImageLayout? If you want to be featured on this list drop me a line.

Developed By

Manuel Peinado Gallego - [email protected]

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Copyright 2013 Manuel Peinado

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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