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blockly > Events > ViewportChange > (constructor)
Events.ViewportChange.(constructor)
Constructs a new instance of the ViewportChange class
Signature:
constructor(opt_top?: number, opt_left?: number, opt_scale?: number, opt_workspaceId?: string, opt_oldScale?: number);
Parameters
| Parameter |
Type |
Description |
| opt_top |
number |
(Optional) Top-edge of the visible portion of the workspace, relative to the workspace origin. Undefined for a blank event. |
| opt_left |
number |
(Optional) Left-edge of the visible portion of the workspace relative to the workspace origin. Undefined for a blank event. |
| opt_scale |
number |
(Optional) The scale of the workspace. Undefined for a blank event. |
| opt_workspaceId |
string |
(Optional) The workspace identifier for this event. Undefined for a blank event. |
| opt_oldScale |
number |
(Optional) The old scale of the workspace. Undefined for a blank event. |
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Last updated 2024-09-18 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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-09-18 UTC."],[],["The `ViewportChange` class constructor creates a new instance to represent changes in the workspace's view. It accepts optional parameters: `opt_top` (top edge position), `opt_left` (left edge position), `opt_scale` (current scale), `opt_workspaceId` (workspace identifier), and `opt_oldScale` (previous scale). These parameters detail the new position and zoom level of the visible workspace area, with the options being undefined when the constructor is called with a blank event.\n"]]
