This is a small slideshow program that I made to practice writing Rust. As a C/C++ programmer, wrapping my head around lifetimes can really hurt.
It is useful for producing small slideshows relatively quickly without much knowledge.
- Multiple Pages
- Basic Styling (Fonts, Small Markup, Color, Arbitrary Positioning)
- Bolding, Italics, Underline,
Strikethrough
- Bolding, Italics, Underline,
- Resolution and aspect ratio independence
- Will provide blackbars on resolutions with different aspect ratios
- Image drawing
- Dynamically changing and accurate font cache with Unicode support
- Dynamically sizes for different resolutions to ensure crisp text
- Caches text lines instead of glyphs, which allows for accurate rendering of text
- Slide transitions (3 types)
- Horizontal slideout/in
- Vertical slideout/in
- Fade to color
This slideshow program is made with Rust, and is feature complete. It is sufficient enough for me to quickly produce slides whenever I need to make presentations.
It's not very difficult to use, and certainly less skill required than using Powerpoint. Of course it is also more minimal than a fully-fledged Office program, but this is very quick.
Slides are produced through a custom markup language (complete with a custom parser for this language), which supports the styling options presented above. This markup language supports specifying page transitions of up to 3 types.
Since this is a visual presentation program, the way I render stuff has to be pretty precise and instead of using a glyph-cache which is extremely common I've opted to use a text-cache. This was chosen because of how complex rendering text accurately is.
I chose to cache text-lines/words instead of individual glyphs as certain combinations of graphemes will produce different individual glyphs. This is most commonly seen in ligatures where characters are commonly combined into a singular glyph for aesthetic purposes. This is also present in some languages such as Arabic.
I recache the font if resolution changes, and cache all the text in a slideshow when it is rendered this ensures it always looks crisp and clean while the cache prevents the performance of rendering text from slowing the program down.
SDL2 and it's family libraries are used for rendering things.
Since this is written in Rust, it should be pretty fault proof thanks to it's memory safety.
This thing depends on sdl2-rs and uses Libre Baskerville as the default font.
Those files are included, and this should be buildable, and runnable with
cargo build
cargo run
Which I admit is way more convenient than my C projects.
Running the program will lead to a blank page.
The page in question will look like this:
You can load a slide by dragging it onto the program as the gifs in the 'Media' section demonstrate.