spinyowl/legui

Java OpenGL GUI library. Created for using with latest LWJGL (LWJGL 3).

Hello👋! I'm Aliaksandr (or shortly Alex), currently living in Kraków, Poland 🏠. I'm a software developer 🤟 and working mainly in Java ☕.

In my free time, during the night 🌃, I'm working on an open-source GUI framework in Java language called legui and its successor

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legui's Issues

Create ListView

Create scrollable list view for components.

Component.addAll adds the components twice

I was debuging my app and I found that some listeners were called more then once per update, after a bit more debuging I found that some components were duplicated, I end up discovering that Component.addAll was adding the components twice.

What happens is that addAll() calls changeParent() for every component before adding it to the container.
The function changeParent() ends with a call to setParent() and this adds the component to the container.

Create renderer for GL ES

Implement toggle button

Can you please implement toggle button?

Create availability to load fonts during application is running.

For now if we register new font in font registry when renderer already initialized it can't be used by renderer.

Implement layouts

Implement different layouts, which allow:

• create automatically resizable components.
• create components pinned to one of edges of parent component.

1. • - Implement layout interface
2. • - Implement layouts
   • • - Border pane
   • • - Horizontal box
   • • - Vertical box
   • • - Stack box
   • • - Grid pane

Implement "select all" shortcut for text components.

Implement "select all" (Ctrl+A) shortcut for text components.

Refactor GsonSerializers to support JsonNull values

Need to refactor GsonSerializers to support JsonNull values

Fix horizontal offset calculation of text input, text area and password input.

Needs JSplitPane equivalent

User-Resizable pane.

See:

Any Control+Key shortcuts should be automatically remap to CMD+Key under mac os

Title.

Create tabbed panel

It would be nice to have tabbed pane

Refactor GsonSerializers to support short type names

Replace @Class by @type in json serializer/deserializer with short type name

Fix text rendering when hiding enabled/disabled

Fix text rendering when hiding enabled/disabled.

The problem is in calculating x and y position for NanoVG text rendering function.

Add background image for buttons

Can you please add background image for buttons?

Huge performace impact in function TextState.getText()

I was having 7 fps and trying to find what was causing it, tried a profiler, and I get this:
http://prntscr.com/geyqui

I try to confirm this, and disabling legui rendering make the program run at 60+ fps

I'm not sure why this is happening because the method only calls StringBuffer.toString() and StringBuffer has an internal cache, maybe has something to do with the method being synchronized.

Add animations

Add support of animations.

Re-implement TextArea component and it's renderer.

Need to re-implement text area and it's renderer.
Renderer for text area is huge now and it will be complicated to supprot it in future.
Need to add support of scrolling (#50) and auto-wrapping (#51).

Add function of auto-wrap text for TextArea

Add function of auto-wrap text for TextArea

Global Refactorings

XML bindings for components

Create ability to create XML bindings to map components to XML and JSON presentation.

Performance

The function NvgRenderer.render(Frame frame, Context context) takes a lot of cpu time, as you can see in my application it takes even more time to run that function than render all the scene:

Right now I get around 25-30 fps, but removing that function call I get more than 60 fps.
I'm investigating what causes that lag.
You can find the lastest version of the application at the github repo

Re-render element on change.

Need to have ability to re-render elements only on change in tree structure.

Add scroll bar to TextArea

Add scroll bar to TextArea

Add FlexBox Layout

FlexBox is one of the CSS 3 layouts made by W3C: https://www.w3schools.com/css/css3_flexbox.asp in the link you can find examples and documentation of the layout.

It allows to arrange elements in columns and rows, allowing to specify the vertical and horizontal orientation of the elements (start, center, end) and adapting to the avaliable space making it easier to create responsive user interfaces.

Suggestion: Be hable to hold down a button and receive multiple press events

Basically MouseClickAction in MouseClickEvent has PRESS, CLICK and RELEASE, It would be cool to have REPEAT, this way you can hold down the a button to make it keep going and you don't have to spam click.

Implement CSS

Implement CSS with properties:

- border: <width> <style> <color>
- border-color: <color>
- border-width: <width>
- border-style: <style> // only solid for beggining is fine
- border-radius: <radius>
- background-color: <color>
- font-family: <family>
- opacity: <0-1>
- margin: <margin>
- width: <width>
- height: <height>
- min-width: <width>
- max-width: <width>
- min-height: <height>
- max-height: <height>

Make TextInput and TextArea to remember offset...

Make TextInput and TextArea to remember offset, so when moving cursor in visible area text will not moved untill reaching bounds of visible text.

Add MenuBar equivalent

There needs to be a MenuBar equivalent like in Swing or JavaFX.

Add tooltips

Can you please add tooltips?

Make rendering mouse caret position in text fields only in debug mode

Can you please disable for default rendering mouse caret position?

Create tool for editing global parameters of fonts

Create a tool to change (and to get) default font family, color and size (height) of interface fonts.

Create abstraction for users that want just to create GUI app without learning OpenGL stuff.

Create abstraction for users that want just to create GUI app without learning OpenGL stuff.
So user should have ability to create windows like in swing or javafx app.

Add ctrl+del functionality for text fields

Can you please implement ctrl+del functionality for text fields?

Implement marshallers

Implement marshallers for :

• LayerContainer
• Layer
• ComponentLayer (Can be not implemented)
• TooltipLayer (Can be not implemented)
• Frame
• ToggleButton
• Tooltip

Implement TreeNode component

Implement TreeNode component which allow to create file browser and etc.

Add shift+left/right functionality for text fields

Can you please implement shift+left/right functionality for text fields

Add parameter of transparency for images

Implement layers

Need to implement layers.

Layer - is structure which will allow to create overlays, modal windows, tooltips, etc.

Themes support

Can you please implement themes support?

ToggleButton doesn't render text

I tried creating a ToggleButton with some text, because one the constructors accepts only a String, but it only renders the background color and the background icon, I checked NvgToggleButtonRenderer and doesn't seem to have any code to render text.

Add javadocs

Can you please add javadocs?

Implement json serialization

Implement tabbing

Fix marshallers. Add Icon marshallers,

Fix marshallers. Add Icon marshallers,

Default demos run downscaled on retina mac

This is what the default demos look like when running on my retina Macbook.

First thing I tried was to mess around with the viewport. I found that replacing the viewport dimensions from the window size to the framebuffer size works perfectly:

//Vector2i windowSize = context.getWindowSize();
Vector2f windowSize = context.getFramebufferSize();
glViewport(0, 0, (int)windowSize.x, (int)windowSize.y);

I haven't had any time to test if it still works on a non-retina screen.

Create HTML DOM-like component structure

It would be nice to separate style and component logic.

Implement tabbing

Incorrect icon on widget

An incorrect icon displayed when the widget is closed in advance.

Create ColorPicker

Create ColorPicker