iced-rs/iced

Calculating canvas text size

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#478 opened on Aug 11, 2020

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 (3 comments) (0 reactions) (0 assignees)Rust (30,491 stars) (1,572 forks)batch import
featuregood first issuetext

Description

Hello,

I'm trying to display canvas::Text next to a chart drawn on a canvas. To get the spacing/padding around the text right, I need to know the amount of space the text will take up on the canvas.

I tried to read the source code and follow the program execution to see how the text gets drawn on the canvas in an attempt to implement this myself but didn't get anywhere. I am thankful for any help on this subject.

Contributor guide

Tech stack
rust
Domain
frontenddesktop
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Basic Rust knowledgeFamiliarity with iced canvas
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
Investigate the canvas text rendering pipeline in iced, specifically how `canvas::Text` is drawn. Look at the `iced graphics` crate's text layout implementation. Consider adding a method like `measure text` to the `Canvas` or `Frame` struct that returns the dimensions of a given text string with a given font and size. Check existing PRs or issues for prior attempts.