168 lines
4 KiB
Rust
168 lines
4 KiB
Rust
use crate::math::{Rect, Vec2};
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// ----------------------------------------------------------------------------
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/// What the integration gives to the gui.
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#[derive(Clone, Copy, Debug, Default, Deserialize)]
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pub struct RawInput {
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/// Is the button currently down?
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pub mouse_down: bool,
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/// Current position of the mouse in points.
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pub mouse_pos: Vec2,
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/// Size of the screen in points.
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pub screen_size: Vec2,
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}
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/// What the gui maintains
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#[derive(Clone, Copy, Debug, Default)]
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pub struct GuiInput {
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/// Is the button currently down?
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pub mouse_down: bool,
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/// The mouse went from !down to down
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pub mouse_clicked: bool,
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/// The mouse went from down to !down
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pub mouse_released: bool,
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/// Current position of the mouse in points.
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pub mouse_pos: Vec2,
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/// Size of the screen in points.
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pub screen_size: Vec2,
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}
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impl GuiInput {
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pub fn from_last_and_new(last: &RawInput, new: &RawInput) -> GuiInput {
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GuiInput {
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mouse_down: new.mouse_down,
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mouse_clicked: !last.mouse_down && new.mouse_down,
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mouse_released: last.mouse_down && !new.mouse_down,
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mouse_pos: new.mouse_pos,
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screen_size: new.screen_size,
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}
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}
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}
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// ----------------------------------------------------------------------------
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/// 0-255 sRGBA
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#[derive(Clone, Copy, Debug, Default, Serialize)]
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pub struct Color {
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pub r: u8,
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pub g: u8,
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pub b: u8,
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pub a: u8,
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}
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pub fn srgba(r: u8, g: u8, b: u8, a: u8) -> Color {
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Color { r, g, b, a }
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}
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// ----------------------------------------------------------------------------
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#[derive(Clone, Copy, Debug, Default, Serialize)]
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pub struct InteractInfo {
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pub hovered: bool,
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/// The mouse went got pressed on this thing this frame
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pub clicked: bool,
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/// The mouse is interacting with this thing (e.g. dragging it)
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pub active: bool,
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}
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#[derive(Clone, Copy, Debug, Serialize)]
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#[serde(rename_all = "snake_case")]
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pub enum TextStyle {
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Label,
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}
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#[derive(Clone, Debug, Serialize)]
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pub enum GuiCmd {
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PaintCommands(Vec<PaintCmd>),
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/// The background for a button
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Button {
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interact: InteractInfo,
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rect: Rect,
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},
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Checkbox {
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checked: bool,
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interact: InteractInfo,
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rect: Rect,
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},
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/// The header button background for a foldable region
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FoldableHeader {
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interact: InteractInfo,
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open: bool,
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rect: Rect,
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},
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RadioButton {
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checked: bool,
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interact: InteractInfo,
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rect: Rect,
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},
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Slider {
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interact: InteractInfo,
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max: f32,
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min: f32,
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rect: Rect,
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value: f32,
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},
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/// Paint a single line of mono-space text.
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/// The text should start at the given position and flow to the right.
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/// The text should be vertically centered at the given position.
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Text {
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pos: Vec2,
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style: TextStyle,
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text: String,
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},
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}
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// ----------------------------------------------------------------------------
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#[derive(Clone, Debug, Serialize)]
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pub struct Outline {
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pub width: f32,
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pub color: Color,
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}
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#[derive(Clone, Debug, Serialize)] // TODO: copy
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#[serde(rename_all = "snake_case", tag = "kind")]
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pub enum PaintCmd {
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Circle {
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center: Vec2,
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fill_color: Option<Color>,
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outline: Option<Outline>,
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radius: f32,
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},
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Clear {
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fill_color: Color,
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},
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Line {
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points: Vec<Vec2>,
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color: Color,
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width: f32,
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},
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Rect {
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corner_radius: f32,
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fill_color: Option<Color>,
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outline: Option<Outline>,
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pos: Vec2,
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size: Vec2,
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},
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/// Paint a single line of mono-space text.
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/// The text should start at the given position and flow to the right.
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/// The text should be vertically centered at the given position.
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Text {
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fill_color: Color,
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/// Name, e.g. Palatino
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font_name: String,
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/// Height in pixels, e.g. 12
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font_size: f32,
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pos: Vec2,
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text: String,
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},
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}
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