Mali GPU User Interface Engine Application Development Guide

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Tutorial on the Lotion User Interface Classes5.5 The Theme class and blue.cppThe Theme class:• displays the controls and applet icons• manages user input• runs an applet if it is selected• is the parent class for the Blue, Minimal, and Robot classes.There are several themes available for use in the application. This section uses example codefrom lotion\themes\blue.cpp:• Theme namespace and includes• Theme onCreate() method• Theme update methods on page 5-34• Handling user interface events in the Theme class on page 5-36• Theme addApplet() method on page 5-36• Theme createWidgetGroup() method on page 5-37• Theme runApplet() and closeApplet() methods on page 5-37• Theme draw() method on page 5-38.5.5.1 Theme namespace and includesThe Theme methods use the Themes, Lotion, and MDE namespaces. See Example 5-27:Example 5-26 Theme namespace and includes#include "blue.h"#include "../../application.h"#include "blue_widget_group.h"#include "../../transitions/puzzle.h"#include "../../transitions/slime.h"#include "../../transitions/cube.h"using namespace MDE;namespace Lotion{namespace Themes{...}}5.5.2 Theme onCreate() methodExample 5-27 shows the start of the blue.cpp file and the onCreate() method:Example 5-27 Theme onCreate() method...void Blue::onCreate(Widget* w){printf("Blue: Loading shader\n");state = StateBrowsing;ARM DUI 0527A-02a Copyright © 2010 ARM. All rights reserved. 5-32ID070710Non-Confidential - Draft - Beta
Tutorial on the Lotion User Interface ClassessetPosition(MDE::vec2i(0, 0));setSize(MDE::vec2i(8000, 4800));font = getFont("fonts/orbitron-light.ttf", 24);prog = getProgram("themes/blue/shader.vert;themes/blue/shader.frag");// Backgroundprintf("Blue: Loading background\n");backgroundLayer = createLayer(prog, 1, 0, 0,Lotion::LayerModeRGBA, "blue_bg");backgroundLayer->createInstances(1, backgroundInstances);backgroundInstances[0]->createQuads(1, false, backgroundQuads);backgroundQuads[0]->set2DRectangle(vec2(0,0), getResolution(), 0);backgroundQuads[0]->setTexture(0, getBitmap("themes/blue/backdrop.png"),BitmapComponentsRGBA_PremultiplyAlpha);backgroundLayer->setFilter(GL_NEAREST, GL_NEAREST);// Logoprintf("Blue: Loading logo\n");backgroundInstances[0]->createQuads(1, true, backgroundQuads);backgroundQuads[1]->set2DRectangle(vec2(2,2), vec2(126, 46), 0);backgroundQuads[1]->setTexture(0, getBitmap("themes/blue/mali_logo.png"),BitmapComponentsRGBA_PremultiplyAlpha);// Iconsprintf("Blue: Loading icons: shader\n");Program menuProg =getProgram("themes/blue/menu.vert;themes/blue/menu.frag");iconLayer = createLayer(menuProg, 4, 0, 0, LayerModeRGBCompressed,"blue_icons");iconLayer->setFilter(GL_NEAREST, GL_NEAREST);iconLayer->createInstances(iconCount, iconInstances);printf("Blue: Loading icons: text shader\n");Program textProg =getProgram("themes/blue/text.vert;themes/blue/text.frag");printf("Blue: Loading icons: creating layer\n");textLayer = createLayer(textProg, 1, 0, 0, LayerModeRGBA, "blue_text");printf("Blue: Loading icons: creating layer instances\n");textLayer->createInstances(iconCount, iconTextInstances);textLayer->setFilter(GL_NEAREST, GL_NEAREST);for (int i = 0; i < iconCount; i++){printf("Blue: Loading icons: Icon %d\n", i);iconInstances[i]->createQuads(4, true, iconQuads);float add_refl = 0.f;float refl_dist = 30.f;// IconiconQuads[i*4+0]->set2DRectangle(vec2(i * 265.f+16, 105.f + add_refl),vec2(240.f, 136.f), 0);iconQuads[i*4+0]->setTexture(0, getBitmap("themes/blue/empty.png"),BitmapComponentsRGB);iconQuads[i*4+0]->setTexture(1, getBitmap("themes/blue/empty.png"),BitmapComponentsRGB);// Icon ReflectioniconQuads[i*4+1]->set2DRectangle(vec2(i * 265+16, 87+162*2+refl_dist+ add_refl),vec2(240, -136), 0);iconQuads[i*4+1]->setTexture(0, getBitmap("themes/blue/empty.png"),BitmapComponentsRGB);iconQuads[i*4+1]->setTexture(1, getBitmap("themes/blue/empty.png"),BitmapComponentsRGB);ARM DUI 0527A-02a Copyright © 2010 ARM. All rights reserved. 5-33ID070710Non-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 Shapes...ele
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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 Drawing 3D Shapes4.3 Te
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Tutorial on Drawing 3D Shapesvec3 c
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Tutorial on Drawing 3D Shapes...0.5
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Tutorial on Drawing 3D ShapesThe tr
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Tutorial on Drawing 3D Shapes}vec4(
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Tutorial on Drawing 3D Shapes...}//
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Tutorial on Drawing 3D Shapes...{}i
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Tutorial on Drawing 3D Shapesfloat
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Tutorial on Drawing 3D Shapes}}prin
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Tutorial on Drawing 3D Shapes4.6 Cu
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Tutorial on Drawing 3D Shapescube_r
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Page 100 and 101: Tutorial on the Lotion User Interfa
Page 140 and 141: Chapter 6Tutorial on Constructing C
Page 142 and 143: Tutorial on Constructing Custom Sha
Page 166 and 167: Appendix AMatrix and Vector Operati
Page 168 and 169: Matrix and Vector Operationsmat4 pe
Page 170 and 171: GlossaryThis glossary describes som
Page 172: GlossaryShader LibraryVertex shader
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