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159 lines
6.9 KiB
Markdown
159 lines
6.9 KiB
Markdown
# Terminal
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**Inherits:** [Control] < [CanvasItem] < [Node] < [Object]
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Terminal emulator.
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**IMPORTANT:**
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<img align="right" src="./docs/important_properties.png"/>
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- If you are not seeing anything in the terminal check that a theme has been set. If there is no theme, everything will be drawn in black by default. A default theme can be found in the [themes directory](../../themes).
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- If the terminal isn't responding to keyboard or mouse input check that `focus_mode` is set to `All`, otherwise `_gui_input()` won't be called so no input will be processed.
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## Description
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### (1) User Input
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The user enters some data into the terminal, typically by typing something on the keyboard or clicking (and possibly dragging) somewhere on the screen.
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This corresponds to the `_gui_input()` method which is implemented in [terminal.cpp](./terminal.cpp).
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### (2) Terminal Output
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The user input from (1) is processed by the terminal and converted.
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For example, if the user were to press the downwards arrow key (↓), the terminal would interpret this
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and the `data_sent()` signal would be emitted with the value `"\u001b[A"`.
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For a full list of escape sequences see ["XTerm Control Sequences"](https://invisible-island.net/xterm/ctlseqs/ctlseqs.html).
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### (3) Terminal Input
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In the other direction, characters can be sent to the terminal. This corresponds to the `write()` method.
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### (4) Draw
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The input from (3) is then intepreted by the terminal and drawn to the screen.
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For example if the string "\u001b[38;2;0;255;0;mA" was written to the terminal, then it would draw a green colored capital letter 'A' on the screen.
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## Properties
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| Type | Name | Default |
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|-------|------|---------|
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| [int] | rows | 24 |
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| [int] | cols | 80 |
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## Methods
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| Returns | Signature |
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|---------|-------------------------------------------------|
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| void | write **(** [String]\|[PoolByteArray] data **)** |
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## Theme Properties
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| Type | Name | Default |
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|---------|-------------------------------|------------------------------|
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| [Color] | Terminal/colors/Background | Color(0.0, 0.0, 0.0, 1.0) |
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| [Color] | Terminal/colors/Black | Color(0.0, 0.0, 0.0, 1.0) |
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| [Color] | Terminal/colors/Blue | Color(0.0, 0.0, 0.5, 1.0) |
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| [Color] | Terminal/colors/Cyan | Color(0.0, 0.5, 0.5, 1.0) |
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| [Color] | Terminal/colors/Dark Grey | Color(0.5, 0.5, 0.5, 1.0) |
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| [Color] | Terminal/colors/Foreground | Color(1.0, 1.0, 1.0, 1.0) |
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| [Color] | Terminal/colors/Green | Color(0.0, 0.5, 0.0, 1.0) |
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| [Color] | Terminal/colors/Light Blue | Color(0.0, 0.0, 1.0, 1.0) |
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| [Color] | Terminal/colors/Light Cyan | Color(0.0, 1.0, 1.0, 1.0) |
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| [Color] | Terminal/colors/Light Green | Color(0.0, 1.0, 0.0, 1.0) |
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| [Color] | Terminal/colors/Light Grey | Color(0.75, 0.75, 0.75, 1.0) |
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| [Color] | Terminal/colors/Light Magenta | Color(1.0, 0.0, 1.0, 1.0) |
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| [Color] | Terminal/colors/Light Red | Color(1.0, 0.0, 0.0, 1.0) |
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| [Color] | Terminal/colors/Light Yellow | Color(1.0, 1.0, 0.0, 1.0) |
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| [Color] | Terminal/colors/Magenta | Color(0.5, 0.0, 0.5, 1.0) |
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| [Color] | Terminal/colors/Red | Color(0.5, 0.0, 0.0, 1.0) |
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| [Color] | Terminal/colors/White | Color(1.0, 1.0, 1.0, 1.0) |
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| [Color] | Terminal/colors/Yellow | Color(0.5, 0.5, 0.0, 1.0) |
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| [Font] | Terminal/fonts/Bold | |
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| [Font] | Terminal/fonts/Bold Italic | |
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| [Font] | Terminal/fonts/Italic | |
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| [Font] | Terminal/fonts/Regular | |
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## Signals
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- **data_sent** **(** [PoolByteArray] data **)**
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Emitted when some data comes out of the terminal.
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This typically occurs when the user interacts with the terminal by typing on the keyboard or clicking somewhere.
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Input can be interpreted differently depending on modifier keys and the terminal's settings/state.
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In a typical setup, this data would be forwarded to the pseudoterminal.
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---
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- **key_pressed** **(** [String] data, [InputEventKey] event **)**
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Emitted when a key is pressed. `data` is the data that would be emitted by the terminal via the `data_sent()` signal and may vary based on the terminal's state. `event` is the event captured by Godot in the `_gui_input(event)` method.
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---
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- **size_changed** **(** [Vector2] new_size **)**
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Emitted when the terminal's size changes, typically in response to its `rect_size` changing.
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`new_size.x` will be the number of columns and `new_size.y` will be the number of rows.
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This information should be forwarded to a pseudoterminal if it is connected so that it can update its size accordingly.
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## Property Descriptions
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- [int] **rows**
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|-----------|------|
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| *Default* | 24 |
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| *Setter* | None |
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| *Getter* | None |
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The number of rows in the terminal's rect.
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When using a monospace font, this is typically the number of characters that can fit from the top to the bottom.
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It will automatically update as the Control's rect_size changes, and therefore shouldn't be used to set the size of the terminal directly.
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---
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- [int] **cols**
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|-----------|------|
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| *Default* | 80 |
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| *Setter* | None |
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| *Getter* | None |
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The number of columns in the terminal's rect.
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When using a monospace font, this is typically the number of characters that can fit from one side to another.
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It will automatically update as the Control's rect_size changes, and therefore shouldn't be used to set the size of the terminal directly.
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## Method Descriptions
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- void **write** **(** [String]|[PoolByteArray] data **)**
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Writes data to the terminal emulator. Accepts either a [String] or [PoolByteArray].
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Typically it would be connected to the output of a pseudoterminal.
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Example:
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```gdscript
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$Terminal.write("Hello World")
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$Terminal.write("Hello World".to_utf8())
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$Terminal.write(PoolByteArray([0x1b, 0x9e])
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```
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[CanvasItem]: https://docs.godotengine.org/en/stable/classes/class_canvasitem.html
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[Color]: https://docs.godotengine.org/en/stable/classes/class_color.html
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[Control]: https://docs.godotengine.org/en/stable/classes/class_control.html
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[Node]: https://docs.godotengine.org/en/stable/classes/class_node.html
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[Font]: https://docs.godotengine.org/en/stable/classes/class_font.html
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[InputEventKey]: https://docs.godotengine.org/en/stable/classes/class_inputeventkey.html
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[int]: https://docs.godotengine.org/en/stable/classes/class_int.html
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[Object]: https://docs.godotengine.org/en/stable/classes/class_object.html
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[PoolByteArray]: https://docs.godotengine.org/en/stable/classes/class_poolbytearray.html
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[String]: https://docs.godotengine.org/en/stable/classes/class_string.html
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[Vector2]: https://docs.godotengine.org/en/stable/classes/class_vector2.html
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