guiver

An experiment in simple GUI programming with Rust:

• Piet is used for rendering
• (multipass) immediate mode rendering is used, inspired by egui
• but also retained mode widgets with message passing are provided, inspired by Tcl/Tk

Notes

• an application implements the Application trait
• an application is in full control:
  • it handles widget events in Application::handle_widget_event()
• widgets implement the Widget trait
• the WidgetManager owns all widgets

Todo

• Layout:
  • multiple single child layout widgets or only one Container?
  • Layout Widgets need to:
    • get the Rects of all its children
      • WidgetRequest?
    • set the Rects of all its children
      • WidgetCommand
      • what about Labels? their minimum rectangle is driven by the text and the font
        • tight?
    • PaintBrush
• implement 7GUIs
  • "Counter"
    • implement Button, Row, Column, Spacer, Padding
  • "Temperature Converter"
    • implement TextEdit
  • "Flight Booker"
    • implement DropdownBox
  • "Timer"
  • "CRUD"
  • "Circle Drawer"
  • "Cells"
• allow a "no loop" optimization for static applications that only render once
• add Python bindings
• provide a WebAssembly demo

See also "So you want to write a GUI framework"