Mali GPU User Interface Engine Application Development Guide

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Tutorial on the Lotion User Interface Classesfps_counter The FpsCounter class is a virtual definition that has a single public virtual methodthat returns the frame rate.radio_buttonThe RadioButton class inherits from Button defines the checked and enabled stateof a radio button widget.sliderThe Slider class defines the virtual interface methods for a slider widget.5.1.2 Overview of initialization in main.cppFigure 5-1 shows the startup and run sequence in main.cpp:Start applicationRead command-line argumentsCreate application and themeLotion::Application* app = new Lotion::Application();theme = new Lotion::Themes::Minimal();app->setResolution(configResolution);app->setup(theme);Configure input devicesapp->addMultiTouchDevice(Lotion::MultiTouch::createMouseDevice(app->getSystem(), app->getContext()));Instantiate appletsLotion::Applet* lightshow = new Lotion::Applets::Lightshow();Add icons for appletstheme->addAppletIcon(lightshow->getIconThumbDesc(),Lotion::AppletCategoryTechdemos);Add applets to applicationlightshow->create(app, lightshow, theme);theme->addApplet(lightshow, Lotion::AppletCategoryTechdemos);Start the lotion applicationtheme->prepare();app->run();Application exitsFigure 5-1 Lotion main.cpp execution flowAfter initializing the application, the code in main.cpp prepares the theme and calls the run()method in the application. Figure 5-2 on page 5-7 shows the run() code within application.cpp:ARM DUI 0527A-02a Copyright © 2010 ARM. All rights reserved. 5-6ID070710Non-Confidential - Draft - Beta
Tutorial on the Lotion User Interface Classesrun() calledSet Widget groupGet mouse pointerBuild Widget groupwg = currentTheme->createWidgeGroup()wg->createImage()wg->build() calls layers[]->build()context->update();Falserun() returnsTrueUpdate timers and frame-ratecounterscurrentTheme->touchevent(e)results in call tocurrentApplet->update()Check for multitouch events and passevent to current themeReset viewportcurrentTheme->update()results in call tocurrentApplet->update()Update current themeDraw current themeDraw widget groupcurrentTheme->draw()results in call to Applet->draw() orcurrentApplet->draw()wg->draw()results in call to the theme widget group tocall draw() for each of the layersFigure 5-2 Application run() method5.1.3 Interaction between the Lotion classesA simplified view of the interaction during startup is shown in Figure 5-3 on page 5-8:ARM DUI 0527A-02a Copyright © 2010 ARM. All rights reserved. 5-7ID070710Non-Confidential - Draft - Beta
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MaliGPU User Interface EngineVersio
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ContentsMali GPU User Interface Eng
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List of TablesMali GPU User Interfa
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List of FiguresFigure 4-17 Environm
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PrefaceAbout this bookThis is the M
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PrefaceFeedbackARM welcomes feedbac
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Introduction1.1 About the Mali GPU
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IntroductionProxygetLoader()LoaderA
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Chapter 2Tutorial on the System Cla
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Tutorial on the System Classes2.2 C
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Tutorial on the System ClassesFigur
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Tutorial on the System ClassesDrawi
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Chapter 3Tutorial on Drawing 2D Sha
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Tutorial on Drawing 2D Shapes...con
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Tutorial on Drawing 2D ShapesFor ea
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Tutorial on Drawing 2D ShapesExampl
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Tutorial on Drawing 2D ShapesFigure
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Tutorial on Drawing 3D Shapes4.1 Dr
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Tutorial on Drawing 3D Shapes4.2 Co
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Tutorial on Constructing Custom Sha
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Appendix AMatrix and Vector Operati
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Matrix and Vector Operationsmat4 pe
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GlossaryThis glossary describes som
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GlossaryShader LibraryVertex shader
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Mali GPU User Interface Engine Application Development Guide

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