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Add Google connector service and agent wiki Implement the C/Seobeo Google Drive and Gmail connector with encrypted OAuth storage, Zenbu authentication, browser testing, AI tool discovery, chunked HTTP decoding, and Bazel coverage. Consolidate repository guidance into progressive wiki documentation and enforce arena-first allocation for new first-party C code. Co-authored-by: Copilot <[email protected]> Copilot-Session: 84c338fd-0939-4bb3-b7f3-1062eb213e5d
author MrJuneJune <me@mrjunejune.com>
date Mon, 17 Aug 2026 22:22:36 -0700
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1 # Entities and Components
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2
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3 ## Retained data, immediate drawing
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5 `Canvas_Scene` stores an arena-backed array of `Canvas_Entity`. Each entity has:
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7 - a stable `id` for external resources such as browser views;
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8 - `type`, world `position`, and world `size`;
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9 - generic semantic fields: `text`, `value`, and `active`;
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10 - interaction/animation state;
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11 - pinning state in both world and screen coordinates.
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13 The scene is retained, but the draw list is rebuilt every frame. This keeps
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14 interaction and context state stable while allowing normal Raylib immediate-mode
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15 drawing.
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16
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17 Each entity also owns lifecycle state. `visibility_amount` eases from zero to
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18 one after creation. Delete and developer Clear mark entities as `removing`, ease
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19 them back to zero, then compact the retained array. Raylib colors, native CEF
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20 texture tints, and WebAssembly overlay opacity all consume the same eased value.
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21
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22 ## Adding a component
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23
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24 Wire every relevant surface, not only drawing:
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25
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26 1. Add the enum value in `canvas.h`.
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27 2. Set useful size, text, and state defaults in `Canvas_Scene_Add()`.
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28 3. Add bounds/picking behavior in `Canvas_Entity_Bounds()` and
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29 `Canvas_Entity_Contains()`.
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30 4. Add click behavior in `Canvas_Scene_Activate()` and specialized update logic
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31 in `Canvas_Scene_Update_Interaction()` when needed.
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32 5. Draw it in `Canvas_Draw_Entity()` and support selection in
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33 `Canvas_Draw_Selection()`.
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34 6. Return a readable label from `Canvas_Entity_Type_Name()`.
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35 7. Serialize meaningful state in `Canvas_Context_Append_Entity_State()`.
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36 8. Add focused tests in `canvas_test.c`.
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37 9. If it owns external pixels or DOM, extend both web-surface backends and key
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38 resources by stable entity ID.
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39
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40 Prefer a single entity for large compound views. The Lucide gallery is one
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41 entity with virtualized internal rows, not 1,767 independently draggable scene
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42 objects.
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43
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44 ## Input ownership
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45
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46 Input is resolved from most specialized to most general:
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47
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48 - developer UI;
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49 - focused native CEF content;
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50 - hovered/pressed scene entity;
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51 - camera.
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53 Open developer dropdowns are modal because Raygui draws their item list beyond
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54 the panel rectangle and consumes outside clicks to close. While one is open,
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55 neither native web surfaces nor canvas entities receive pointer input behind it.
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57 Text editing blocks WASD/arrow camera movement. Scrollable entities consume an
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58 unmodified wheel. Ctrl/Cmd + wheel remains available to the camera for anchored
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59 zoom; an unmodified wheel outside a scrollable entity pans vertically.
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61 Text areas keep cursor, selection anchor, and vertical scroll state on the
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62 entity. Their visual-line layout is shared by drawing, hit testing, vertical
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63 cursor movement, and caret visibility, so wrapped text and mouse selection use
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64 the same geometry. Ctrl on Windows/Linux and Cmd on macOS drive select/copy/
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65 cut/paste shortcuts; Ctrl or Option performs word navigation.