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annotate infinite_canvas/canvas.h @ 278:8d560f50ed4c

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Improve infinite canvas interactions and browser chrome Render Lucide icons directly with Raylib, add searchable icon browsing, robust text editing, entity lifecycle animations, z-order-safe input, semantic themes, and animated editable browser controls. Document rendering, pinning, context, and component extension for future agents. Co-authored-by: Copilot <[email protected]> Copilot-Session: f68442b1-fa8f-46a0-9689-81710613bbd4
author MrJuneJune <me@mrjunejune.com>
date Mon, 17 Aug 2026 22:16:14 -0700
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children 49e9e591c9bb
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1 #ifndef INFINITE_CANVAS_CANVAS_H
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2 #define INFINITE_CANVAS_CANVAS_H
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3
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4 #include "dowa/dowa.h"
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5 #include "infinite_canvas/theme.h"
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6 #include "third_party/raylib/include/raylib.h"
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7
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8 #define CANVAS_MAX_ENTITIES 1024
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9 #define CANVAS_WEB_FRAME_INSET 8.0f
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10 #define CANVAS_WEB_TOOLBAR_HEIGHT 42.0f
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11 #define CANVAS_WEB_RESIZE_HANDLE 18.0f
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12 #define CANVAS_WEB_MIN_WIDTH 160.0f
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13 #define CANVAS_WEB_MIN_HEIGHT 120.0f
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14 #define CANVAS_CONTEXT_MAX_LENGTH (64 * 1024)
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15 #define CANVAS_ENTITY_TEXT_CAPACITY 2048
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16
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17 typedef enum {
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18 CANVAS_ENTITY_RECTANGLE = 0,
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19 CANVAS_ENTITY_CIRCLE,
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20 CANVAS_ENTITY_LINE,
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21 CANVAS_ENTITY_TEXT,
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22 CANVAS_ENTITY_BUTTON,
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23 CANVAS_ENTITY_TEXT_AREA,
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24 CANVAS_ENTITY_DROPDOWN,
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25 CANVAS_ENTITY_ACCORDION,
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26 CANVAS_ENTITY_CARD,
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27 CANVAS_ENTITY_CALENDAR,
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28 CANVAS_ENTITY_SWITCH,
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29 CANVAS_ENTITY_TABLE,
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30 CANVAS_ENTITY_NOTIFICATION,
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31 CANVAS_ENTITY_SCROLL_AREA,
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32 CANVAS_ENTITY_IMAGE,
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33 CANVAS_ENTITY_WEB_CONTENT,
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34 CANVAS_ENTITY_LUCIDE_GALLERY,
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35 CANVAS_ENTITY_TYPE_COUNT,
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36 } Canvas_Entity_Type;
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37
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38 typedef struct {
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39 uint32 id;
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40 Canvas_Entity_Type type;
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41 Vector2 position;
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42 Vector2 size;
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43 Color color;
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44 char text[CANVAS_ENTITY_TEXT_CAPACITY];
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45 int32 value;
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46 int32 text_cursor;
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47 int32 text_selection_anchor;
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48 float text_scroll_y;
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49 float visibility_amount;
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50 boolean active;
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51 boolean pinned;
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52 boolean removing;
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53 boolean screen_space_initialized;
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54 float hover_amount;
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55 float animation_amount;
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56 float web_chrome_amount;
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57 Vector2 pinned_screen_position;
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58 Vector2 pinned_screen_size;
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59 } Canvas_Entity;
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60
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61 typedef struct {
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62 Vector2 target;
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63 float zoom;
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64 int32 viewport_width;
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65 int32 viewport_height;
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66 float min_zoom;
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67 float max_zoom;
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68 } Canvas_Camera;
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69
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70 typedef struct {
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71 Dowa_Arena *p_arena;
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72 Canvas_Entity *p_entities;
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73 uint32 next_entity;
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74 uint32 next_entity_id;
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75 int32 selected_index;
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76 int32 pressed_index;
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77 int32 hover_index;
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78 boolean dragging;
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79 boolean resizing;
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80 boolean selecting_text;
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81 boolean editing_web_url;
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82 boolean show_grid;
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83 float notification_stack_amount;
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84 uint32 web_url_entity_id;
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85 int32 web_url_cursor;
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86 int32 web_url_selection_anchor;
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87 float web_url_scroll_x;
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88 char web_url_draft[CANVAS_ENTITY_TEXT_CAPACITY];
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89 Vector2 pointer_start;
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90 Vector2 entity_start;
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91 Vector2 entity_size_start;
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92 } Canvas_Scene;
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93
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94 typedef struct {
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95 size_t visible_count;
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96 size_t bytes_written;
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97 boolean truncated;
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98 } Canvas_Context_Snapshot;
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99
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100 typedef enum {
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101 CANVAS_WEB_CHROME_NONE = 0,
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102 CANVAS_WEB_CHROME_CAPTURE,
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103 CANVAS_WEB_CHROME_BACK,
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104 CANVAS_WEB_CHROME_FORWARD,
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105 CANVAS_WEB_CHROME_NAVIGATE,
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106 } Canvas_Web_Chrome_Action;
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107
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108 void Canvas_Camera_Init(Canvas_Camera *p_camera, int32 width, int32 height);
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109 void Canvas_Camera_Set_Viewport(Canvas_Camera *p_camera, int32 width, int32 height);
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110 Vector2 Canvas_Camera_Screen_To_World(const Canvas_Camera *p_camera, Vector2 screen);
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111 Vector2 Canvas_Camera_World_To_Screen(const Canvas_Camera *p_camera, Vector2 world);
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112 void Canvas_Camera_Pan(Canvas_Camera *p_camera, Vector2 screen_delta);
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113 void Canvas_Camera_Zoom_At(
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114 Canvas_Camera *p_camera,
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115 Vector2 screen_anchor,
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116 float zoom_multiplier);
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117 Rectangle Canvas_Camera_Viewport_Bounds(const Canvas_Camera *p_camera);
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118 void Canvas_Camera_Fit_Bounds(
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119 Canvas_Camera *p_camera,
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120 Rectangle bounds,
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121 float padding_left,
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122 float padding_top,
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123 float padding_right,
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124 float padding_bottom);
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125 float Canvas_Grid_Spacing(float zoom);
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126 int32 Canvas_Lucide_Count_Matches(const char *p_query);
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127 Canvas_Web_Chrome_Action Canvas_Web_Chrome_Update_Input(
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128 const Canvas_Camera *p_camera,
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129 Canvas_Scene *p_scene,
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130 Font font,
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131 const char *p_current_url);
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132 boolean Canvas_Web_Chrome_Is_Editing(const Canvas_Scene *p_scene);
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133
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134 void Canvas_Scene_Init(Canvas_Scene *p_scene, Dowa_Arena *p_arena);
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135 boolean Canvas_Scene_Add(Canvas_Scene *p_scene, Canvas_Entity_Type type, Vector2 position);
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136 void Canvas_Scene_Clear(Canvas_Scene *p_scene);
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137 void Canvas_Scene_Fade_Out_All(Canvas_Scene *p_scene);
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138 void Canvas_Scene_Fade_Out_Selected(Canvas_Scene *p_scene);
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139 void Canvas_Scene_Add_Demo(Canvas_Scene *p_scene);
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140 void Canvas_Scene_Add_Browser_Grid(Canvas_Scene *p_scene);
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141 boolean Canvas_Scene_Show_Lucide_Gallery(
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142 Canvas_Scene *p_scene,
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143 Canvas_Camera *p_camera);
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144 int32 Canvas_Scene_Pick(
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145 const Canvas_Scene *p_scene,
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146 Vector2 world_pointer,
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147 float zoom);
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148 int32 Canvas_Scene_Topmost_Visual(
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149 const Canvas_Scene *p_scene,
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150 Vector2 world_pointer,
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151 float zoom);
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152 boolean Canvas_Scene_Update_Interaction(
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153 Canvas_Scene *p_scene,
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154 const Canvas_Camera *p_camera,
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155 Font font,
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156 boolean block_pointer_input);
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157 boolean Canvas_Scene_Is_Text_Editing(const Canvas_Scene *p_scene);
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158 void Canvas_Scene_Toggle_Selected_Pin(
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159 Canvas_Scene *p_scene,
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160 const Canvas_Camera *p_camera);
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161 void Canvas_Scene_Sync_Pinned(
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162 Canvas_Scene *p_scene,
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163 const Canvas_Camera *p_camera);
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164 void Canvas_Scene_Update_Notification_Stack(
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165 Canvas_Scene *p_scene,
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166 const Canvas_Camera *p_camera);
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167 Canvas_Context_Snapshot Canvas_Scene_Build_Visible_Context(
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168 const Canvas_Scene *p_scene,
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169 const Canvas_Camera *p_camera,
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170 char *p_buffer,
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171 size_t buffer_size);
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172
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173 void Canvas_Update_Camera_Input(
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174 Canvas_Camera *p_camera,
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175 boolean block_pointer_input,
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176 boolean block_keyboard_input);
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177 void Canvas_Draw_World(
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178 const Canvas_Camera *p_camera,
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179 const Canvas_Scene *p_scene,
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180 Font font,
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181 const Canvas_Theme *p_theme);
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182 void Canvas_Draw_World_Background(
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183 const Canvas_Camera *p_camera,
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184 const Canvas_Scene *p_scene,
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185 const Canvas_Theme *p_theme);
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186 void Canvas_Draw_World_Entity(
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187 const Canvas_Camera *p_camera,
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188 const Canvas_Scene *p_scene,
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189 size_t entity_index,
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190 Font font,
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191 const Canvas_Theme *p_theme);
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192 void Canvas_Draw_Web_Chrome_Entity(
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193 const Canvas_Camera *p_camera,
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194 const Canvas_Scene *p_scene,
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195 size_t entity_index,
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196 Font font,
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197 const Canvas_Theme *p_theme,
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198 const char *p_url,
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199 boolean can_go_back,
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200 boolean can_go_forward);
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201 void Canvas_Draw_World_Overlays(
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202 const Canvas_Camera *p_camera,
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203 const Canvas_Scene *p_scene,
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204 Font font,
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205 const Canvas_Theme *p_theme);
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206
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207 const char *Canvas_Entity_Type_Name(Canvas_Entity_Type type);
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208
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209 #endif