Feature/add about screen (#1)

Adds the "About" scene, which displays the version info and credits. The user can scroll up/down through this screen.

include/core/RDPQGraphics.h

@@ -8,10 +8,24 @@
 
 typedef struct TextRenderSettings
 {
+    /**
+     * @brief The libdragon font id (used as handle) as known by libdragon. FontManager manages the various fonts
+     */
     uint8_t fontId;
+    /**
+     * @brief The style id used to render the text. (this is a handle/id to a previously registered rdpq_fontstyle_t struct for the fontId specified earlier)
+     */
     uint8_t fontStyleId;
     int16_t charSpacing; ///< Extra spacing between chars (in addition to glyph width and kerning)
     int16_t lineSpacing; ///< Extra spacing between lines (in addition to font height)
+    /**
+     * @brief The horizontal alignment of the text
+     */
+    rdpq_align_t halign;
+    /**
+     * @brief The vertical alignment of the text
+     */
+    rdpq_valign_t valign;
 } TextRenderSettings;
 
 typedef struct SpriteRenderSettings SpriteRenderSettings;

include/menu/MenuFunctions.h

@@ -17,6 +17,7 @@ void activateFrameLog(void* context, const void* param);
 void advanceDialog(void* context, const void* param);
 
 void goToTestScene(void* context, const void* param);
+void goToAboutScene(void* context, const void* param);
 
 void goToGen1DistributionPokemonMenu(void* context, const void* param);
 void goToGen2DistributionPokemonMenu(void* context, const void* param);

include/scenes/AboutScene.h

@@ -0,0 +1,52 @@
+#ifndef _ABOUTSCENE_H
+#define _ABOUTSCENE_H
+
+#include "scenes/AbstractUIScene.h"
+#include "widget/ScrollWidget.h"
+#include "widget/ImageWidget.h"
+#include "widget/TextWidget.h"
+
+/**
+ * @brief This scene shows the version number and credits of the PokeMe64 project.
+ */
+class AboutScene : public AbstractUIScene
+{
+public:
+    AboutScene(SceneDependencies& deps, void* context);
+    virtual ~AboutScene();
+
+    void init() override;
+    void destroy() override;
+
+    bool handleUserInput(joypad_port_t port, const joypad_inputs_t& inputs) override;
+    void render(RDPQGraphics& gfx, const Rectangle& sceneBounds) override;
+protected:
+private:
+    uint8_t fontIdArial_;
+    uint8_t fontArialStyleWhiteId_;
+    sprite_t* logoLibDragon_;
+    sprite_t* logoBulbagarden_;
+    sprite_t* logoRetroGameMechanicsExplained_;
+    sprite_t* logoDataCrystal_;
+    sprite_t* logoPKHEX_;
+    sprite_t* logoGBDevIO_;
+    sprite_t* logoNESDevWiki_;
+    ScrollWidget scrollWidget_;
+    TextWidget headerText_;
+    ImageWidget imgDragonWidget_;
+    ImageWidget imgBulbagardenWidget_;
+    ImageWidget imgRetroGameMechanicsExplained_;
+    ImageWidget imgDataCrystal_;
+    TextWidget dataCrystalText_;
+    ImageWidget imgPKHEX_;
+    TextWidget PKHEXText_;
+    TextWidget pretPokeCrystalText_;
+    ImageWidget imgGBDevIO_;
+    TextWidget gbDevIOText_;
+    ImageWidget imgNESDevWiki_;
+    TextWidget otherCreditsText_;
+    WidgetFocusChainSegment scrollFocusSegment_;
+    bool bButtonPressed_;
+};
+
+#endif

include/scenes/IScene.h

@@ -18,7 +18,8 @@ enum class SceneType
     MENU,
     DISTRIBUTION_POKEMON_LIST,
     STATS,
-    TEST
+    TEST,
+    ABOUT
 };
 
 typedef struct SceneDependencies

include/widget/ImageWidget.h

@@ -7,7 +7,6 @@
 
 typedef struct ImageWidgetStyle
 {
-    Dimensions size;
     struct {
         /**
          * (optional) background sprite

include/widget/TextWidget.h

@@ -6,9 +6,9 @@
 
 typedef struct TextWidgetStyle
 {
-    Dimensions size;
     TextRenderSettings renderSettingsFocused;
     TextRenderSettings renderSettingsNotFocused;
+    uint16_t backgroundColor_; // RGBA16
 } TextWidgetStyle;
 
 /**