# answer2/material architecture

> Architecture diagram of the GitHub repository answer2/material, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-28). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/answer2/material
- Repository: https://github.com/answer2/material

## Overview

This is a Kotlin/JavaFX Material-style UI framework: applications create activities and windows, assemble views and Material controls, and can navigate between fragments. A parallel theme workflow builds and distributes themes from HCT-based color state. The tree also shows a substantial Material color-science toolkit, including dynamic schemes and image-color quantization/scoring. The README is empty, and only selected sources were sampled, so some subsystem connections and control-to-render wiring are intentionally omitted.

Main entry points: [`src/main/kotlin/dev/answer/material/view/View.kt`](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/view/View.kt) (View tree and layouts), [`src/main/kotlin/dev/answer/material/theme/ThemeManager.kt`](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/theme/ThemeManager.kt) (Theme manager), [`src/main/kotlin/dev/answer/material/content/Context.kt`](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/content/Context.kt) (Context), [`src/main/kotlin/dev/answer/material/content/Activity.kt`](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/content/Activity.kt) (Activity)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_lifecycle["App lifecycle"]
  node_context["Context<br/>[Context.kt]"]
  node_activity_manager["Activity manager<br/>[ActivityManager.kt]"]
  node_activity["Activity<br/>[Activity.kt]"]
  node_window["Window<br/>[Window.kt]"]
  node_resources["Resources and loading<br/>[Resources.kt]"]
  node_fragment_manager["Fragment navigation<br/>[FragmentManager.kt]"]
  node_fragment["Fragment<br/>[Fragment.kt]"]
end

subgraph group_ui["Views and controls"]
  node_view_tree["View tree and layouts<br/>[View.kt]"]
  node_material_controls["Material controls<br/>[MaterialButton.kt]"]
  node_text_input["Text input"]
end

subgraph group_appearance["Theme and color"]
  node_theme_manager["Theme manager<br/>[ThemeManager.kt]"]
  node_theme["Theme definitions<br/>[Theme.kt]"]
  node_palette["Color palette<br/>[ColorPalette.java]"]
  node_hct["HCT color model<br/>[Hct.java]"]
  node_dynamic_colors["Dynamic colors"]
  node_color_schemes["Scheme variants<br/>[Scheme.java]"]
  node_image_colors["Image color analysis"]
  node_color_scoring["Color scoring<br/>[Score.java]"]
end

subgraph group_render["Graphics and motion"]
  node_graphics["Graphics and drawables<br/>[Drawable.kt]"]
  node_fx_render["JavaFX renderer<br/>[FXRender.kt]"]
  node_animation["View animation<br/>[ViewAnimation.kt]"]
end

node_user(("Application caller"))

node_user -->|"uses"| node_context
node_context -->|"starts activity"| node_activity_manager
node_activity_manager -->|"creates and starts"| node_activity
node_activity -->|"sets content"| node_window
node_activity -->|"finishes through"| node_activity_manager
node_context -->|"exposes"| node_resources
node_fragment_manager -->|"manages lifecycle"| node_fragment
node_fragment_manager -->|"installs fragment view"| node_view_tree
node_activity -->|"sets content view"| node_view_tree
node_material_controls -->|"extends view toolkit"| node_view_tree
node_text_input -->|"extends view toolkit"| node_view_tree
node_context -->|"provides theme manager"| node_theme_manager
node_theme_manager -->|"creates and updates"| node_theme
node_theme_manager -->|"builds palette"| node_palette
node_theme_manager -->|"initializes color state"| node_hct
node_theme_manager -->|"notifies observers"| node_user
node_dynamic_colors -->|"defines scheme colors"| node_color_schemes
node_image_colors -->|"produces candidate colors"| node_color_scoring
node_graphics -->|"provides drawing content"| node_fx_render
node_view_tree -->|"renders views"| node_fx_render
node_animation -->|"animates views"| node_view_tree

click node_context "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/content/Context.kt"
click node_activity_manager "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/manager/ActivityManager.kt"
click node_activity "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/content/Activity.kt"
click node_window "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/view/Window.kt"
click node_resources "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/content/Resources.kt"
click node_fragment_manager "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/manager/FragmentManager.kt"
click node_fragment "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/view/Fragment.kt"
click node_view_tree "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/view/View.kt"
click node_material_controls "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/component/MaterialButton.kt"
click node_text_input "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/component/TextInputEditText.kt"
click node_theme_manager "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/theme/ThemeManager.kt"
click node_theme "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/theme/Theme.kt"
click node_palette "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/theme/ColorPalette.java"
click node_hct "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/desgin/hct/Hct.java"
click node_dynamic_colors "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/desgin/dynamiccolor/MaterialDynamicColors.java"
click node_color_schemes "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/desgin/scheme/Scheme.java"
click node_image_colors "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/desgin/quantize/QuantizerCelebi.java"
click node_color_scoring "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/desgin/score/Score.java"
click node_graphics "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/graphics/Drawable.kt"
click node_fx_render "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/graphics/FXRender.kt"
click node_animation "https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/view/animation/ViewAnimation.kt"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_context,node_activity_manager,node_activity,node_window,node_resources,node_fragment_manager,node_fragment toneBlue
class node_view_tree,node_material_controls,node_text_input toneAmber
class node_theme_manager,node_theme,node_palette,node_hct,node_dynamic_colors,node_color_schemes,node_image_colors,node_color_scoring toneMint
class node_graphics,node_fx_render,node_animation toneRose
class node_user toneIndigo
```

## Components

### App lifecycle

- [Context](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/content/Context.kt): `src/main/kotlin/dev/answer/material/content/Context.kt`
- [Activity manager](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/manager/ActivityManager.kt): `src/main/kotlin/dev/answer/material/manager/ActivityManager.kt`
- [Activity](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/content/Activity.kt): `src/main/kotlin/dev/answer/material/content/Activity.kt`
- [Window](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/view/Window.kt): `src/main/kotlin/dev/answer/material/view/Window.kt`
- [Resources and loading](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/content/Resources.kt): `src/main/kotlin/dev/answer/material/content/Resources.kt`
- [Fragment navigation](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/manager/FragmentManager.kt): `src/main/kotlin/dev/answer/material/manager/FragmentManager.kt`
- [Fragment](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/view/Fragment.kt): `src/main/kotlin/dev/answer/material/view/Fragment.kt`

### Views and controls

- [View tree and layouts](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/view/View.kt): `src/main/kotlin/dev/answer/material/view/View.kt`
- [Material controls](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/component/MaterialButton.kt): `src/main/kotlin/dev/answer/material/component/MaterialButton.kt`
- [Text input](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/component/TextInputEditText.kt): `src/main/kotlin/dev/answer/material/component/TextInputEditText.kt`

### Theme and color

- [Theme manager](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/theme/ThemeManager.kt): `src/main/kotlin/dev/answer/material/theme/ThemeManager.kt`
- [Theme definitions](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/theme/Theme.kt): `src/main/kotlin/dev/answer/material/theme/Theme.kt`
- [Color palette](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/theme/ColorPalette.java): `src/main/kotlin/dev/answer/material/theme/ColorPalette.java`
- [HCT color model](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/desgin/hct/Hct.java): `src/main/kotlin/dev/answer/material/desgin/hct/Hct.java`
- [Dynamic colors](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/desgin/dynamiccolor/MaterialDynamicColors.java): `src/main/kotlin/dev/answer/material/desgin/dynamiccolor/MaterialDynamicColors.java`
- [Scheme variants](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/desgin/scheme/Scheme.java): `src/main/kotlin/dev/answer/material/desgin/scheme/Scheme.java`
- [Image color analysis](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/desgin/quantize/QuantizerCelebi.java): `src/main/kotlin/dev/answer/material/desgin/quantize/QuantizerCelebi.java`
- [Color scoring](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/desgin/score/Score.java): `src/main/kotlin/dev/answer/material/desgin/score/Score.java`

### Graphics and motion

- [Graphics and drawables](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/graphics/Drawable.kt): `src/main/kotlin/dev/answer/material/graphics/Drawable.kt`
- [JavaFX renderer](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/graphics/FXRender.kt): `src/main/kotlin/dev/answer/material/graphics/FXRender.kt`
- [View animation](https://github.com/answer2/material/blob/master/src/main/kotlin/dev/answer/material/view/animation/ViewAnimation.kt): `src/main/kotlin/dev/answer/material/view/animation/ViewAnimation.kt`

### Other components

- **Application caller**

## Connections

- Application caller → Context: uses
- Context → Activity manager: starts activity
- Activity manager → Activity: creates and starts
- Activity → Window: sets content
- Activity → Activity manager: finishes through
- Context → Resources and loading: exposes
- Fragment navigation → Fragment: manages lifecycle
- Fragment navigation → View tree and layouts: installs fragment view
- Activity → View tree and layouts: sets content view
- Material controls → View tree and layouts: extends view toolkit
- Text input → View tree and layouts: extends view toolkit
- Context → Theme manager: provides theme manager
- Theme manager → Theme definitions: creates and updates
- Theme manager → Color palette: builds palette
- Theme manager → HCT color model: initializes color state
- Theme manager → Application caller: notifies observers
- Dynamic colors → Scheme variants: defines scheme colors
- Image color analysis → Color scoring: produces candidate colors
- Graphics and drawables → JavaFX renderer: provides drawing content
- View tree and layouts → JavaFX renderer: renders views
- View animation → View tree and layouts: animates views