Sun Microsystems Computer Accessories manual Customizing the Wireless Toolkit

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C H A P T E R 1

Customizing the Wireless Toolkit

The JavaTM 2 Platform, Micro Edition Wireless Toolkit (J2METM Wireless Toolkit) provides an emulation environment for the development of applications compliant with the Mobile Information Device Profile (MIDP).

The Java 2 Platform, Micro Edition Wireless Toolkit Basic Customization Guide provides technical details for configuring the toolkit to accommodate new device emulators.

This chapter gives an overview of customizing the J2ME Wireless Toolkit and includes the following topics:

■How to Customize the Wireless Toolkit

■Device Property Files and the Default Emulator

Chapter 2, “Creating Device Property Files” presents a tutorial on how to adapt the device definitions in J2ME Wireless Toolkit for a new device.

Chapter 3, “Examining Device Property Files” describes in more detail the components of a device definition and how to create your own device definition.

How to Customize the Wireless Toolkit

One of the major benefits of the J2ME Wireless Toolkit is its ability to be customized: it can be readily adapted to provide a platform for developing Java applications that can run on many different devices, even from different manufacturers.

To do this, the J2ME Wireless Toolkit provides a Default Emulator that can be easily customized to provide high-fidelity emulation for many devices. The appearance and behavior of an emulated device is defined in the Default Emulator by a set of device property files, which contain the device’s images and property definitions. Thus, you can add a new device by simply creating a new set of device property files.

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Contents Basic Customization Guide Please Contents Examining Device Property Files Default Emulator Device Property Files Vi Wireless Toolkit Basic Customization Guide December Figures Viii Wireless Toolkit Basic Customization Guide December Tables Wireless Toolkit Basic Customization Guide December How This Book Is Organized Who Should Use This BookUsing Operating System Commands Typographic Conventions Shell PromptsRelated Documentation Sun Welcomes Your Comments Accessing Sun Documentation OnlineHow to Customize the Wireless Toolkit Customizing the Wireless ToolkitCustomization Steps Device Property Files and the Default EmulatorCustomizing the Wireless Toolkit Wireless Toolkit Basic Customization Guide December Make a Copy of an Existing Main Device Property File Creating Device Property FilesObtain and Enter Image Files Screen Location Obtain and Enter the Screen PropertiesDisplay Area Total Screen SizeSpecifying Screen Properties Display Area in Full Screen ModeBy measuring the image file, obtain the button properties Obtain and Enter the Button PropertiesHeight Width Obtain and Enter Soft Button Label Areas Soft button label display is defined by a line of the form Defining the Icon Location and States Obtain and Enter Icon PropertiesEnter the following measured values for the icons properties Enter Color Properties Run the Emulator for the New DeviceScreen Background RGB Color Examining Device Property Files Device Property Files Main Device Property File FontsFonts Used by the Midp APIs Default Font System FontsBitmap Fonts Ascii character Distance to character Device Image Font UnderliningScaling Image without Buttons PressedImage with Buttons Pressed Image with Buttons Highlighted and Backlight OnScreen Properties Screen Location Display Area in Full Screen Mode Total Screen SizeDisplay Area Screen Background Color Screen Pixel RatioScreen Border Color Touch ScreenScreen Buffering Device Buttons Keyboard HandlerDefining a Device Button Button.LEFT = 13, 197, 20 Assigning a PC Keyboard Key to a Button Specifying the Characters Generated by a Button Press Assigning a Game Action to a ButtonAbstract Command Types in Order of Precedence Assigning Abstract Commands to ButtonsEmulating Abstract Command Button Assignments Precedence of Assigning Commands to a Button Secondary Button Assignments Abstract Command Menu Defining the Icon Location and States Displayed IconsSoft Button Labels on the Emulated Device Display Soft Button Label DisplaySound Alerts ColorAlert Type Values Device Software CapabilitiesCharacter Encodings LocalesTransparent Images EnableAlphaChannel falseWireless Toolkit Basic Customization Guide December Property Files Default Emulator Device Property FilesDefaultGrayPhone.properties Appendix a Default Emulator Device Property Files Wireless Toolkit Basic Customization Guide December Appendix a Default Emulator Device Property Files Wireless Toolkit Basic Customization Guide December # alert.alerttype.sound soundfile Wireless Toolkit Basic Customization Guide December Icon Image Files Device Image FilesIcon Image Files Adding a ByteCode Obfuscator Support for ByteCode ObfuscatorsExample Appendix B Support for ByteCode Obfuscators Wireless Toolkit Basic Customization Guide December P E N D I X C Wireless Toolkit Basic Customization Guide December Index Keyboard.handler property Device property ﬁles, 1 WMA messages, customizing Wireless Toolkit Basic Customization Guide December