Add Virtual Mouse to Android Editor

[Amn4583]

This PR introduces a new touch control for the Android editor called VirtualMouse. It aims to address several issues in the Android editor, such as:

• Fingers obstructing the UI while tapping
• Difficulty modifying nodes with small gizmo handles
• Challenges when resizing control nodes
• Issues with drag-and-drop functionality

The VirtualMouse is designed to enhance usability and provide a smoother experience for touch-based interactions in the editor. This new VirtualMouse works like a laptop trackpad allowing precise control without obscuring the target. This is also beneficial for the larger screen devices like tablets.

virtual_mouse.mp4

Gestures:

• Single finger drag: Move cursor
• Single finger tap: Left click
• Single finger double tap: Double click
• Two fingers tap simultaneously: Right click
• Secondary finger held + primary finger drag: Drag and drop
• Two fingers drag in same direction: Scroll (up/down/left/right)

virtual_mouse_gesture.mp4

The system is toggleable via Editor Settings > Interface > Touchscreen > Enable Virtual Mouse with an adjustable sensitivity setting. It doesn't interfere while running the games because it only works in the editor.

virtual_mouse_settings.mp4

Important Note: It is very important to disable Long Press as Right Click and Pan and Scale Gestures to avoid any gesture conflicts.

Closes godotengine/godot-proposals#14613

[JekSun97]

Would look good together with #116716

[welson-rodrigues]

What is the exact version? In the video, I saw it only said 4.7.dev, but we're on dev3. I plan to make a video about it on YouTube.

[m4gr3d]

Closing as per godotengine/godot-proposals#14613 (comment)

[Amn4583]

@welson-rodrigues Yeah it's actually the 4.7 dev3 (forked the master branch after dev3) but just shows 4.7.dev because it's a debug build. If you are interested, you can download and test the editor from my fork.

[welson-rodrigues]

@welson-rodriguesSim, na verdade é o 4.7 dev3(fork do branch master após o dev3), mas só aparece 4.7.devporque é uma versão de depuração. Se tiver interesse, você pode baixar e testar o editor a partir do meu fork.

@Amn4583 Thank you very much, I will definitely test it! Are you thinking of making it available as a plugin in Godot's assets directory, or leaving it on GitHub for forks and such?

[Amn4583]

@Amn4583 Thank you very much, I will definitely test it! Are you thinking of making it available as a plugin in Godot's assets directory, or leaving it on GitHub for forks and such?

Right now, I am not thinking of turning it into a plugin. The reason is simple. It involves modification of complex touch gestures and the core input system. I don't even know that making this as a plugin is possible or not. For now, I am leaving it on GitHub.