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blockly > geras > Renderer
geras.Renderer class
The geras renderer. This renderer was designed to be backwards compatible with pre-2019 Blockly. Newer projects that are not constrained by backwards compatibility should use thrasos, which is a more modern take on this renderer.
Geras is the ancient Greek spirit of old age.
Signature:
export declare class Renderer extends BaseRenderer
Extends: BaseRenderer
Constructors
| Constructor |
Modifiers |
Description |
| (constructor)(name) |
|
Constructs a new instance of the Renderer class |
Methods
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Last updated 2025-05-16 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-05-16 UTC."],[[["\u003cp\u003eThe \u003ccode\u003egeras\u003c/code\u003e renderer in Blockly is designed for backwards compatibility with older versions of Blockly, specifically those predating 2019.\u003c/p\u003e\n"],["\u003cp\u003eFor newer projects without backwards compatibility constraints, the \u003ccode\u003ethrasos\u003c/code\u003e renderer is recommended as a more modern alternative.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003egeras\u003c/code\u003e renderer extends the \u003ccode\u003eBaseRenderer\u003c/code\u003e and includes methods for initialization, creating render objects, and handling highlights, among others.\u003c/p\u003e\n"],["\u003cp\u003eDevelopers can access detailed information about its constructors and methods in the provided documentation links.\u003c/p\u003e\n"]]],[],null,["[blockly](./blockly.md) \\\u003e [geras](./blockly.geras_namespace.md) \\\u003e [Renderer](./blockly.geras_namespace.renderer_class.md)\n\ngeras.Renderer class\n--------------------\n\nThe geras renderer. This renderer was designed to be backwards compatible with pre-2019 Blockly. Newer projects that are not constrained by backwards compatibility should use thrasos, which is a more modern take on this renderer.\n\nGeras is the ancient Greek spirit of old age.\n\n**Signature:** \n\n export declare class Renderer extends BaseRenderer \n\n**Extends:** [BaseRenderer](./blockly.blockrendering_namespace.renderer_class.md)\n\nConstructors\n------------\n\n| Constructor | Modifiers | Description |\n|------------------------------------------------------------------------------------------------|-----------|---------------------------------------------------|\n| [(constructor)(name)](./blockly.geras_namespace.renderer_class._constructor__1_constructor.md) | | Constructs a new instance of the `Renderer` class |\n\nMethods\n-------\n\n| Method | Modifiers | Description |\n|-----------------------------------------------------------------------------------------------------------|-------------|--------------------------------------------------------------------------------------------------------------------------------|\n| [getHighlightConstants()](./blockly.geras_namespace.renderer_class.gethighlightconstants_1_method.md) | | Get the renderer's highlight constant provider. We assume that when this is called, the renderer has already been initialized. |\n| [init(theme, opt_rendererOverrides)](./blockly.geras_namespace.renderer_class.init_1_method.md) | | Initialize the renderer. Geras has a highlight provider in addition to the normal constant provider. |\n| [makeConstants_()](./blockly.geras_namespace.renderer_class.makeconstants__1_method.md) | | |\n| [makeDrawer_(block, info)](./blockly.geras_namespace.renderer_class.makedrawer__1_method.md) | `protected` | Create a new instance of the renderer's drawer. |\n| [makeHighlightConstants_()](./blockly.geras_namespace.renderer_class.makehighlightconstants__1_method.md) | `protected` | Create a new instance of the renderer's highlight constant provider. |\n| [makePathObject(root, style)](./blockly.geras_namespace.renderer_class.makepathobject_1_method.md) | | Create a new instance of a renderer path object. |\n| [makeRenderInfo_(block)](./blockly.geras_namespace.renderer_class.makerenderinfo__1_method.md) | `protected` | Create a new instance of the renderer's render info object. |\n| [refreshDom(svg, theme, injectionDiv)](./blockly.geras_namespace.renderer_class.refreshdom_1_method.md) | | |"]]
