iced-rs/iced

Calculating canvas text size

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#478 建立於 2020年8月11日

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 (3 留言) (0 反應) (0 負責人)Rust (30,491 star) (1,572 fork)batch import
featuregood first issuetext

描述

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.

貢獻者指南

技術棧
rust
領域
frontenddesktop
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-2 days
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
Basic Rust knowledgeFamiliarity with iced canvas
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
50
研究方向
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.