200 Commits

Author SHA1 Message Date
Laurenz
73615f7e3c Text shaping 🚀
- Shapes text with rustybuzz
- Font fallback with family list
- Tofus are shown in the first font

Co-Authored-By: Martin <mhaug@live.de>
2021-03-24 17:12:34 +01:00
Laurenz
6720520ec0 Render svg emoji 🐳 2021-03-23 15:32:36 +01:00
Laurenz
3fb1f59f1e Bump tiny-skia to 0.5 🔼 2021-03-23 13:17:00 +01:00
Laurenz
98336bfafb Better font family definitions ✒ 2021-03-22 14:08:50 +01:00
Laurenz
83fa2c075e Fix bug with line spacing after headings 2021-03-22 01:14:37 +01:00
Laurenz
5e08028fb3 Syntax functions 🚀
This adds overridable functions that markup desugars into. Specifically:
- \ desugars into linebreak
- Two newlines desugar into parbreak
- * desugars into strong
- _ desugars into emph
- = .. desugars into heading
- `..` desugars into raw
2021-03-21 17:50:56 +01:00
Laurenz
898728f260 Square, circle and ellipse 🔵 2021-03-20 20:19:30 +01:00
Martin
6cb9fe9064
Text colors 🦩 (#18) 2021-03-19 22:36:13 +01:00
Laurenz
264a7dedd4 Scheduled maintenance 🔨
- New naming scheme
  - TextNode instead of NodeText
  - CallExpr instead of ExprCall
  - ...
- Less glob imports
- Removes Value::Args variant
- Removes prelude
- Renames Layouted to Fragment
- Moves font into env
- Moves shaping into layout
- Moves frame into separate module
2021-03-19 17:57:31 +01:00
Laurenz
ca3df70e2a Add basic paragraph function 📑
Allows to change:
- (paragraph) spacing
- leading
- word-spacing
2021-03-19 13:32:12 +01:00
Laurenz
54a9ccb1a5 Configurable font edges ⚙
Adds top-edge and bottom-edge parameters to the font function. These define how
the box around a word is computed. The possible values are:
- ascender
- cap-height (default top edge)
- x-height
- baseline (default bottom edge)
- descender

The defaults are chosen so that it's easy to create good-looking designs with
vertical alignment. Since they are much tighter than what most other software
uses by default, the default leading had to be increased to 50% of the font size
and paragraph spacing to 100% of the font size.

The values cap-height and x-height fall back to ascender in case they are zero
because this value may occur in fonts that don't have glyphs with cap- or
x-height (like Twitter Color Emoji). Since cap-height is the default top edge,
doing no fallback would break things badly.

Removes softness in favor of a simple boolean for pages and a more finegread u8
for spacing. This is needed to make paragraph spacing consume line spacing
created by hard line breaks.
2021-03-19 13:20:58 +01:00
Laurenz
49bb7f9a2b Switch from name to ratio for font stretch parameter 📐 2021-03-17 23:14:19 +01:00
Laurenz
8cdfc7faaf Rename box to rect and color to fill ✏ 2021-03-17 22:08:44 +01:00
Laurenz
f190d33d0c Better tests for pad function 2021-03-13 14:35:51 +01:00
Laurenz
3c74e4566a Faster compile times and test execution
- Optimize only dependencies, not the main crate
- Don't generate debug info
- Don't generate PDFs for all tets by default
2021-03-13 14:18:31 +01:00
Laurenz
1584b09708 Fix pagebreak-in-box bug ✔ 2021-03-12 18:48:11 +01:00
Laurenz
c3acb491e3 Refactor execution context 🏗
- The execution context is a lot more structured: Instead of a magic stack of arbitrary objects there are static objects for pages, stacks and paragraphs
- Page softness/keeping mechanic is now a lot simpler than before
2021-03-12 14:16:59 +01:00
Laurenz
ffcb8cd97a Fix test false positive for empty output ✔ 2021-03-12 13:57:47 +01:00
Laurenz
c1b1dbcc09 Better expansion behaviour 🐪
This makes expansion behaviour inheritable by placing it into the area and passing it down during layouting instead of computing some approximation of what we want during execution.
2021-03-11 10:48:29 +01:00
Laurenz
4e5f85aa4a Pad function 🔲 2021-03-10 17:42:47 +01:00
Laurenz
b0446cbdd1 Move around library types 🚚 2021-03-10 17:22:44 +01:00
Laurenz
bbb9ed07ff Better line spacing calculations ↕
- Only add line spacing between lines. Previously, line spacing was added below
  every line, making `#box[word]` higher than just `word`.
- Compute box height of text as `ascender - descender` so that the full word is
  contained in the box.
2021-03-10 10:20:01 +01:00
Laurenz
34f839c717 Improve tests 🔨 2021-03-03 22:48:54 +01:00
Laurenz
193734f453 Callee expressions 🍅 2021-03-03 22:33:00 +01:00
Laurenz
1cfc3c72b5 Show name of user-defined functions in representation 🦋 2021-03-03 18:15:33 +01:00
Laurenz
c94a18833f Closures and function definitions 🚀
Supports:
- Closure syntax: `(x, y) => z`
- Shorthand for a single argument: `x => y`
- Function syntax: `let f(x) = y`
- Capturing of variables from the environment
- Error messages for too few / many passed arguments

Does not support:
- Named arguments
- Variadic arguments with `..`
2021-03-03 17:53:40 +01:00
Laurenz
d5d187a8c2 Replace default fonts 🆕 2021-03-02 17:31:41 +01:00
Laurenz
45abcf6b2b Remove dependencies on itoa and ryu ⬇️ 2021-03-02 15:45:01 +01:00
Laurenz
f084165eab While loops 🔁 2021-02-24 21:29:32 +01:00
Laurenz
dae3dad540 Index + value iteration for arrays 🦚 2021-02-24 18:54:06 +01:00
Laurenz
7092c50447 VS Code language support extension 🛠 2021-02-23 20:27:23 +01:00
Laurenz
de37a056ed Split pushed text at newlines ✂ 2021-02-21 11:43:25 +01:00
Laurenz
4d42c79b16 Fix spacing after raw blocks ⬇️ 2021-02-21 11:43:08 +01:00
Laurenz
05727bfc3a Reorganize tests 🔀 2021-02-20 23:34:33 +01:00
Laurenz
927341d93a Update coma example ⬆️ 2021-02-18 15:19:29 +01:00
Laurenz
ed81049ddc Show repr in monospace 📏 2021-02-18 15:06:13 +01:00
Laurenz
cc964e32c9 Better function call tests ✔ 2021-02-18 15:06:06 +01:00
Laurenz
84cdc85ca7 Refresh parser 🌊 2021-02-18 15:06:00 +01:00
Laurenz
2f4dc99cec Refresh tests 🌊 2021-02-17 21:30:20 +01:00
Laurenz
094462cbdd Make templates and strings summable 🥪 2021-02-12 23:11:47 +01:00
Laurenz
58f799c41c Early quit loop when body returns error 🛑 2021-02-12 23:06:04 +01:00
Laurenz
790dc9e667 Cleaning 🧹 2021-02-12 22:55:26 +01:00
Laurenz
a2fcc1bf28 Small fixes ♻ 2021-02-11 22:24:42 +01:00
Laurenz
146eda102a Move span directly into diagnostics 🚚 2021-02-11 19:26:47 +01:00
Laurenz
1711b67877 Move all pretty printing into one module and pretty print values 🦋 2021-02-11 17:33:13 +01:00
Laurenz
f9197dcfef Add arguments value 🏓 2021-02-09 22:56:44 +01:00
Laurenz
06ca740d01 Split evaluation and execution 🔪 2021-02-09 19:46:57 +01:00
Laurenz
062d99f70f Document how to run tests 📝 2021-02-07 13:27:03 +01:00
Laurenz
c80e13579f Dry-clean visitor with a macro 🏜 2021-02-07 13:14:28 +01:00
Martin Haug
a6cae89b47 Generalize child of NodeBackground 🍼 2021-02-06 12:54:44 +01:00