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609 lines
27 KiB
Rust
609 lines
27 KiB
Rust
//! Slide transitions and object animations.
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//!
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//! Animations are kept as the flat, ordered list the Animation Pane shows; the PPTX writer builds
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//! the nested timing tree from it and the reader flattens files back into it.
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use serde::{Deserialize, Serialize};
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use crate::ShapeId;
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#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
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#[serde(default, rename_all = "camelCase")]
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pub struct Transition {
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/// Effect id: `none`, `fade`, `push`, `wipe`, `split`, `reveal`, `cut`, `randomBar`, `shape`,
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/// `uncover`, `cover`, `flash`, `morph`, `dissolve`, `checker`, `blinds`, `clock`, `zoom`… (see
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/// [`TRANSITIONS`]).
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pub kind: String,
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/// Effect option, e.g. direction `l`, `r`, `u`, `d`, `horz`, `vert`, `in`, `out`.
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pub option: String,
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pub duration_ms: u32,
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pub advance_on_click: bool,
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pub advance_after_ms: Option<u32>,
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/// Embedded sound media.
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pub sound: Option<crate::MediaId>,
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/// Loop Until Next Sound (`p:stSnd loop="1"`).
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#[serde(skip_serializing_if = "std::ops::Not::not")]
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pub sound_loop: bool,
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/// [Stop Previous Sound] (`p:endSnd`): the slide stops a sound still playing.
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#[serde(skip_serializing_if = "std::ops::Not::not")]
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pub stop_sound: bool,
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/// Unmodelled transition XML kept for round-trip.
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#[serde(skip_serializing_if = "Option::is_none")]
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pub raw: Option<String>,
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}
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impl Default for Transition {
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fn default() -> Self {
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Transition {
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kind: "none".into(),
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option: String::new(),
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duration_ms: 1000,
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advance_on_click: true,
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advance_after_ms: None,
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sound: None,
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sound_loop: false,
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stop_sound: false,
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raw: None,
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}
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}
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}
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/// (id, label, category, default duration ms, effect options)
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pub static TRANSITIONS: &[(&str, &str, &str, u32, &[&str])] = &[
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("none", "None", "Subtle", 0, &[]),
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("morph", "Morph", "Subtle", 2000, &["objects", "words", "characters"]),
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("fade", "Fade", "Subtle", 700, &["smoothly", "throughBlack"]),
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("push", "Push", "Subtle", 1000, &["u", "d", "l", "r"]),
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("wipe", "Wipe", "Subtle", 1000, &["r", "l", "u", "d", "ru", "lu", "rd", "ld"]),
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("split", "Split", "Subtle", 1500, &["vertOut", "vertIn", "horzOut", "horzIn"]),
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("reveal", "Reveal", "Subtle", 2000, &["smoothlyLeft", "smoothlyRight", "blackLeft", "blackRight"]),
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("cut", "Cut", "Subtle", 0, &["", "throughBlack"]),
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("randomBar", "Random Bars", "Subtle", 1000, &["vert", "horz"]),
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("shape", "Shape", "Subtle", 2000, &["circle", "diamond", "plus", "in", "out"]),
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("uncover", "Uncover", "Subtle", 1000, &["l", "r", "u", "d", "lu", "ru", "ld", "rd"]),
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("cover", "Cover", "Subtle", 1000, &["l", "r", "u", "d", "lu", "ru", "ld", "rd"]),
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("flash", "Flash", "Subtle", 1000, &[]),
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("fallOver", "Fall Over", "Exciting", 2000, &["l", "r"]),
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("drape", "Drape", "Exciting", 2000, &["l", "r"]),
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("curtains", "Curtains", "Exciting", 2000, &[]),
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("wind", "Wind", "Exciting", 2000, &["l", "r"]),
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("prestige", "Prestige", "Exciting", 2000, &[]),
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("fracture", "Fracture", "Exciting", 2000, &[]),
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("crush", "Crush", "Exciting", 2000, &[]),
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("peelOff", "Peel Off", "Exciting", 1500, &["l", "r"]),
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("pageCurlDouble", "Page Curl", "Exciting", 1500, &["l", "r", "singleL", "singleR"]),
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("airplane", "Airplane", "Exciting", 2000, &["l", "r"]),
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("origami", "Origami", "Exciting", 2000, &["l", "r"]),
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("dissolve", "Dissolve", "Exciting", 1200, &[]),
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("checker", "Checkerboard", "Exciting", 1500, &["horz", "vert"]),
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("blinds", "Blinds", "Exciting", 1600, &["vert", "horz"]),
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("clock", "Clock", "Exciting", 2000, &["clockwise", "counterClockwise", "wedge"]),
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("ripple", "Ripple", "Exciting", 1400, &["center", "lu", "ru", "ld", "rd"]),
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("honeycomb", "Honeycomb", "Exciting", 3000, &[]),
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("glitter", "Glitter", "Exciting", 2500, &["l", "r", "u", "d", "hexL", "hexR", "hexU", "hexD"]),
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("vortex", "Vortex", "Exciting", 3000, &["l", "r", "u", "d"]),
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("shred", "Shred", "Exciting", 2000, &["stripsIn", "stripsOut", "particlesIn", "particlesOut"]),
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("switch", "Switch", "Exciting", 1250, &["l", "r"]),
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("flip", "Flip", "Exciting", 1250, &["l", "r"]),
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("gallery", "Gallery", "Exciting", 1500, &["l", "r"]),
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("cube", "Cube", "Exciting", 1250, &["l", "r", "u", "d"]),
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("doors", "Doors", "Exciting", 1400, &["vert", "horz"]),
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("box", "Box", "Exciting", 1250, &["l", "r", "u", "d"]),
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("comb", "Comb", "Exciting", 1000, &["horz", "vert"]),
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("zoom", "Zoom", "Exciting", 1000, &["in", "out", "rotate"]),
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("random", "Random", "Exciting", 2000, &[]),
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("pan", "Pan", "Dynamic Content", 1000, &["u", "d", "l", "r"]),
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("ferris", "Ferris Wheel", "Dynamic Content", 2000, &["l", "r"]),
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("conveyor", "Conveyor", "Dynamic Content", 2000, &["l", "r"]),
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("rotate", "Rotate", "Dynamic Content", 2000, &["l", "r", "u", "d"]),
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("window", "Window", "Dynamic Content", 1250, &["vert", "horz"]),
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("orbit", "Orbit", "Dynamic Content", 2000, &["l", "r", "u", "d"]),
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("flythrough", "Fly Through", "Dynamic Content", 1000, &["in", "out", "inBounce", "outBounce"]),
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];
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/// The Effect Options label PowerPoint shows for a transition option. Options are stored as the
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/// file format's values: for moving transitions (Push, Wipe, Cover, Pan, Cube…) the direction
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/// things move, so "l" is the effect coming "From Right"; Glitter and the preset effects (Fall
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/// Over, Wind…) name the side itself; Ripple names where the wave heads.
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pub fn transition_option_label(kind: &str, option: &str) -> String {
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let side = |c: char| match c {
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'l' => "Left",
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'r' => "Right",
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'u' => "Top",
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_ => "Bottom",
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};
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let opposite = |c: char| match c {
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'l' => 'r',
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'r' => 'l',
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'u' => 'd',
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_ => 'u',
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};
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let corner = |o: &str, flip: bool| -> Option<String> {
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let mut cs = o.chars();
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let (h, v) = (cs.next()?, cs.next()?);
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let (h, v) = if flip { (opposite(h), opposite(v)) } else { (h, v) };
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Some(format!("From {}-{}", side(v), side(h)))
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};
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let moving = matches!(
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kind,
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"push"
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| "wipe"
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| "cover"
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| "uncover"
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| "pan"
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| "vortex"
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| "cube"
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| "box"
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| "rotate"
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| "orbit"
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| "gallery"
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| "conveyor"
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| "ferris"
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| "switch"
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| "flip"
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);
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match (kind, option) {
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(_, "horz") => "Horizontal".into(),
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(_, "vert") => "Vertical".into(),
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("split", o) => format!("{} {}", if o.starts_with("horz") { "Horizontal" } else { "Vertical" }, if o.ends_with("In") { "In" } else { "Out" }),
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("fade" | "cut", "throughBlack") => "Through Black".into(),
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("fade", _) => "Smoothly".into(),
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("cut", _) => "Cut".into(),
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("clock", "counterClockwise") => "Counterclockwise".into(),
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("clock", "wedge") => "Wedge".into(),
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("clock", _) => "Clockwise".into(),
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("zoom", "rotate") => "Zoom and Rotate".into(),
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("ripple", "center") => "Center".into(),
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("ripple", o) => corner(o, true).unwrap_or_else(|| "Center".into()),
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("glitter", o) => {
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let (pat, d) = match o.strip_prefix("hex") {
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Some(d) => ("Hexagons", d.to_ascii_lowercase()),
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None => ("Diamonds", o.to_string()),
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};
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format!("{pat} From {}", side(d.chars().next().unwrap_or('l')))
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}
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("pageCurlDouble", o) => match o {
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"singleL" => "Single Left".into(),
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"singleR" => "Single Right".into(),
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"r" => "Double Right".into(),
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_ => "Double Left".into(),
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},
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("shred", o) => {
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format!("{} {}", if o.starts_with("particles") { "Particles" } else { "Strips" }, if o.ends_with("Out") { "Out" } else { "In" })
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}
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("reveal", o) => format!(
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"{} {}",
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if o.starts_with("black") { "Through Black" } else { "Smoothly" },
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if o.ends_with("Right") { "From Right" } else { "From Left" }
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),
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("flythrough", o) => {
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format!("{}{}", if o.starts_with("out") { "Out" } else { "In" }, if o.ends_with("Bounce") { " with Bounce" } else { "" })
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}
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("morph", o) => match o {
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"words" => "Words".into(),
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"characters" => "Characters".into(),
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_ => "Objects".into(),
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},
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(_, o) if o.len() == 2 && moving => corner(o, true).unwrap_or_default(),
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(_, o) if o.len() == 1 && moving => format!("From {}", side(opposite(o.chars().next().unwrap_or('l')))),
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(_, "l") => "Left".into(),
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(_, "r") => "Right".into(),
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(_, "u") => "Top".into(),
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(_, "d") => "Bottom".into(),
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(_, "in") => "In".into(),
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(_, "out") => "Out".into(),
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(_, o) => o.to_string(),
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}
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}
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#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, Serialize, Deserialize)]
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#[serde(rename_all = "camelCase")]
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pub enum AnimClass {
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#[default]
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Entrance,
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Emphasis,
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Exit,
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Path,
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Media,
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}
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impl AnimClass {
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pub fn xml(self) -> &'static str {
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match self {
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AnimClass::Entrance => "entr",
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AnimClass::Emphasis => "emph",
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AnimClass::Exit => "exit",
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AnimClass::Path => "path",
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AnimClass::Media => "mediacall",
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}
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}
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pub fn from_xml(s: &str) -> Self {
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match s {
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"emph" => AnimClass::Emphasis,
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"exit" => AnimClass::Exit,
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"path" => AnimClass::Path,
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"mediacall" => AnimClass::Media,
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_ => AnimClass::Entrance,
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}
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}
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}
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#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, Serialize, Deserialize)]
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#[serde(rename_all = "camelCase")]
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pub enum AnimStart {
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#[default]
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OnClick,
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WithPrevious,
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AfterPrevious,
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}
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/// Text build: as one object, all at once by paragraph, or by paragraph level.
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#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, Serialize, Deserialize)]
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#[serde(rename_all = "camelCase")]
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pub enum TextBuild {
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#[default]
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AsOne,
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ByParagraph,
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ByWord,
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ByLetter,
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}
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#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
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#[serde(default, rename_all = "camelCase")]
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pub struct Animation {
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pub shape: ShapeId,
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pub class: AnimClass,
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/// Effect id from [`ANIMATIONS`] (e.g. `fade`, `fly`, `zoom`, `spin`, `pulse`, `lines`…).
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pub effect: String,
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/// Effect option (direction etc.).
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pub option: String,
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pub start: AnimStart,
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pub duration_ms: u32,
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pub delay_ms: u32,
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/// Repeat count (0/1 = once); `u32::MAX` = until next click.
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pub repeat: u32,
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pub rewind: bool,
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pub text_build: TextBuild,
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/// Paragraph index when the effect animates one paragraph of a text body.
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pub paragraph: Option<u32>,
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/// Motion path in slide-relative units (SVG-like `M 0 0 L 0.25 0 E`).
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pub path: Option<String>,
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/// Triggered by a click on another shape.
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pub trigger: Option<ShapeId>,
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/// Emphasis amount: spin degrees, grow/shrink scale (1.5 = 150%), transparency…
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pub amount: Option<f64>,
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/// Emphasis colour (fill/line/font colour change).
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pub color: Option<crate::style::ColorRef>,
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/// PowerPoint preset id/subtype read from or written to files.
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pub preset_id: Option<u32>,
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pub preset_subtype: Option<u32>,
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/// After animation: dim to colour, hide, hide on next click.
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pub after: Option<String>,
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pub sound: Option<crate::MediaId>,
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pub smooth_start: f64,
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pub smooth_end: f64,
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pub bounce_end: f64,
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pub auto_reverse: bool,
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}
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impl Default for Animation {
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fn default() -> Self {
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Animation {
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shape: ShapeId(0),
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class: AnimClass::Entrance,
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effect: "fade".into(),
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option: String::new(),
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start: AnimStart::OnClick,
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duration_ms: 500,
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delay_ms: 0,
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repeat: 1,
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rewind: false,
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text_build: TextBuild::AsOne,
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paragraph: None,
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path: None,
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trigger: None,
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amount: None,
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color: None,
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preset_id: None,
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preset_subtype: None,
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after: None,
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sound: None,
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smooth_start: 0.0,
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smooth_end: 0.0,
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bounce_end: 0.0,
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auto_reverse: false,
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}
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}
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}
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/// (id, label, class, PowerPoint preset id, default duration ms, options)
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pub static ANIMATIONS: &[(&str, &str, AnimClass, u32, u32, &[&str])] = &[
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("appear", "Appear", AnimClass::Entrance, 1, 0, &[]),
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("fade", "Fade", AnimClass::Entrance, 10, 500, &[]),
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("fly", "Fly In", AnimClass::Entrance, 2, 500, &["b", "lb", "l", "lt", "t", "rt", "r", "rb"]),
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("float", "Float In", AnimClass::Entrance, 42, 1000, &["u", "d"]),
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("split", "Split", AnimClass::Entrance, 16, 500, &["horzIn", "horzOut", "vertIn", "vertOut"]),
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("wipe", "Wipe", AnimClass::Entrance, 22, 500, &["b", "l", "t", "r"]),
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("shape", "Shape", AnimClass::Entrance, 6, 2000, &["circleIn", "circleOut", "boxIn", "boxOut", "diamondIn", "diamondOut", "plusIn", "plusOut"]),
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("wheel", "Wheel", AnimClass::Entrance, 21, 2000, &["1", "2", "3", "4", "8"]),
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("randomBars", "Random Bars", AnimClass::Entrance, 14, 500, &["horz", "vert"]),
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("grow", "Grow & Turn", AnimClass::Entrance, 31, 500, &[]),
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("zoom", "Zoom", AnimClass::Entrance, 53, 500, &["in", "out"]),
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("swivel", "Swivel", AnimClass::Entrance, 45, 2000, &["horz", "vert"]),
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("bounce", "Bounce", AnimClass::Entrance, 26, 2000, &[]),
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("blinds", "Blinds", AnimClass::Entrance, 3, 500, &["horz", "vert"]),
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("box", "Box", AnimClass::Entrance, 4, 500, &["in", "out"]),
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("checkerboard", "Checkerboard", AnimClass::Entrance, 5, 500, &["across", "down"]),
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("circle", "Circle", AnimClass::Entrance, 6, 500, &["in", "out"]),
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("diamond", "Diamond", AnimClass::Entrance, 8, 500, &["in", "out"]),
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("dissolve", "Dissolve In", AnimClass::Entrance, 9, 500, &[]),
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("peek", "Peek In", AnimClass::Entrance, 12, 500, &["b", "l", "t", "r"]),
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("strips", "Strips", AnimClass::Entrance, 18, 500, &["lu", "ru", "ld", "rd"]),
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("expand", "Expand", AnimClass::Entrance, 55, 500, &[]),
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("rise", "Rise Up", AnimClass::Entrance, 37, 1000, &[]),
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("spinner", "Spinner", AnimClass::Entrance, 49, 1000, &[]),
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("pulse", "Pulse", AnimClass::Emphasis, 26, 500, &[]),
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("colorPulse", "Color Pulse", AnimClass::Emphasis, 27, 500, &[]),
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("teeter", "Teeter", AnimClass::Emphasis, 32, 1000, &[]),
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("spin", "Spin", AnimClass::Emphasis, 8, 2000, &["clockwise", "counterClockwise"]),
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("growShrink", "Grow/Shrink", AnimClass::Emphasis, 6, 2000, &["both", "horz", "vert"]),
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("desaturate", "Desaturate", AnimClass::Emphasis, 35, 500, &[]),
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("darken", "Darken", AnimClass::Emphasis, 25, 500, &[]),
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("lighten", "Lighten", AnimClass::Emphasis, 30, 500, &[]),
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("transparency", "Transparency", AnimClass::Emphasis, 9, 500, &[]),
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("objectColor", "Object Color", AnimClass::Emphasis, 19, 2000, &[]),
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("complementaryColor", "Complementary Color", AnimClass::Emphasis, 21, 500, &[]),
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("lineColor", "Line Color", AnimClass::Emphasis, 7, 2000, &[]),
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("fillColor", "Fill Color", AnimClass::Emphasis, 1, 2000, &[]),
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("fontColor", "Font Color", AnimClass::Emphasis, 3, 2000, &[]),
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("underline", "Underline", AnimClass::Emphasis, 18, 500, &[]),
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("boldFlash", "Bold Flash", AnimClass::Emphasis, 10, 500, &[]),
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("wave", "Wave", AnimClass::Emphasis, 34, 500, &[]),
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("disappear", "Disappear", AnimClass::Exit, 1, 0, &[]),
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("fadeOut", "Fade", AnimClass::Exit, 10, 500, &[]),
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("flyOut", "Fly Out", AnimClass::Exit, 2, 500, &["b", "lb", "l", "lt", "t", "rt", "r", "rb"]),
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("floatOut", "Float Out", AnimClass::Exit, 42, 1000, &["u", "d"]),
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("splitOut", "Split", AnimClass::Exit, 16, 500, &["horzIn", "horzOut", "vertIn", "vertOut"]),
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("wipeOut", "Wipe", AnimClass::Exit, 22, 500, &["b", "l", "t", "r"]),
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("shapeOut", "Shape", AnimClass::Exit, 6, 2000, &["circleIn", "circleOut"]),
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("wheelOut", "Wheel", AnimClass::Exit, 21, 2000, &["1", "2", "3", "4", "8"]),
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("randomBarsOut", "Random Bars", AnimClass::Exit, 14, 500, &["horz", "vert"]),
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("shrinkTurn", "Shrink & Turn", AnimClass::Exit, 31, 500, &[]),
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|
("zoomOut", "Zoom", AnimClass::Exit, 53, 500, &["in", "out"]),
|
|
("swivelOut", "Swivel", AnimClass::Exit, 45, 2000, &["horz", "vert"]),
|
|
("bounceOut", "Bounce", AnimClass::Exit, 26, 2000, &[]),
|
|
("dissolveOut", "Dissolve Out", AnimClass::Exit, 9, 500, &[]),
|
|
("blindsOut", "Blinds", AnimClass::Exit, 3, 500, &["horz", "vert"]),
|
|
("boxOut", "Box", AnimClass::Exit, 4, 500, &["in", "out"]),
|
|
("checkerboardOut", "Checkerboard", AnimClass::Exit, 5, 500, &["across", "down"]),
|
|
("diamondOut", "Diamond", AnimClass::Exit, 8, 500, &["in", "out"]),
|
|
("peekOut", "Peek Out", AnimClass::Exit, 12, 500, &["b", "l", "t", "r"]),
|
|
("stripsOut", "Strips", AnimClass::Exit, 18, 500, &["lu", "ru", "ld", "rd"]),
|
|
("sinkDown", "Sink Down", AnimClass::Exit, 37, 1000, &[]),
|
|
("spinnerOut", "Spinner", AnimClass::Exit, 49, 1000, &[]),
|
|
("contract", "Contract", AnimClass::Exit, 55, 500, &[]),
|
|
("lines", "Lines", AnimClass::Path, 64, 2000, &["down", "up", "right", "left"]),
|
|
("arcs", "Arcs", AnimClass::Path, 37, 2000, &["down", "up", "right", "left"]),
|
|
("turns", "Turns", AnimClass::Path, 43, 2000, &["down", "up", "right", "left"]),
|
|
(
|
|
"shapes",
|
|
"Shapes",
|
|
AnimClass::Path,
|
|
1,
|
|
2000,
|
|
&["circle", "diamond", "hexagon", "triangle", "square", "trapezoid", "octagon", "parallelogram", "pentagon"],
|
|
),
|
|
("loops", "Loops", AnimClass::Path, 61, 2000, &[]),
|
|
("diagonalDownRight", "Diagonal Down Right", AnimClass::Path, 49, 2000, &[]),
|
|
("diagonalUpRight", "Diagonal Up Right", AnimClass::Path, 56, 2000, &[]),
|
|
("zigzag", "Zigzag", AnimClass::Path, 38, 2000, &[]),
|
|
("sineWave", "Sine Wave", AnimClass::Path, 40, 2000, &[]),
|
|
("pathWave", "Wave", AnimClass::Path, 47, 2000, &[]),
|
|
("decayingWave", "Decaying Wave", AnimClass::Path, 60, 2000, &[]),
|
|
("heartbeat", "Heartbeat", AnimClass::Path, 45, 2000, &[]),
|
|
("sCurve1", "S Curve 1", AnimClass::Path, 59, 2000, &[]),
|
|
("sCurve2", "S Curve 2", AnimClass::Path, 39, 2000, &[]),
|
|
("stairsDown", "Stairs Down", AnimClass::Path, 62, 2000, &[]),
|
|
("bounceRight", "Bounce Right", AnimClass::Path, 54, 2000, &[]),
|
|
("bounceLeft", "Bounce Left", AnimClass::Path, 41, 2000, &[]),
|
|
("spiralRight", "Spiral Right", AnimClass::Path, 46, 2000, &[]),
|
|
("spiralLeft", "Spiral Left", AnimClass::Path, 55, 2000, &[]),
|
|
("spring", "Spring", AnimClass::Path, 53, 2000, &[]),
|
|
("funnel", "Funnel", AnimClass::Path, 52, 2000, &[]),
|
|
("swoosh", "Swoosh", AnimClass::Path, 30, 2000, &[]),
|
|
("star4", "4 Point Star", AnimClass::Path, 16, 2000, &[]),
|
|
("star5", "5 Point Star", AnimClass::Path, 5, 2000, &[]),
|
|
("star6", "6 Point Star", AnimClass::Path, 11, 2000, &[]),
|
|
("star8", "8 Point Star", AnimClass::Path, 17, 2000, &[]),
|
|
("heart", "Heart", AnimClass::Path, 9, 2000, &[]),
|
|
("crescentMoon", "Crescent Moon", AnimClass::Path, 6, 2000, &[]),
|
|
("teardrop", "Teardrop", AnimClass::Path, 18, 2000, &[]),
|
|
("football", "Football", AnimClass::Path, 12, 2000, &[]),
|
|
("plusPath", "Plus", AnimClass::Path, 32, 2000, &[]),
|
|
("rightTriangle", "Right Triangle", AnimClass::Path, 2, 2000, &[]),
|
|
("curvedSquare", "Curved Square", AnimClass::Path, 20, 2000, &[]),
|
|
("figure8Horizontal", "Horizontal Figure 8", AnimClass::Path, 26, 2000, &[]),
|
|
("figure8Vertical", "Vertical Figure 8", AnimClass::Path, 22, 2000, &[]),
|
|
("loopDeLoop", "Loop de Loop", AnimClass::Path, 24, 2000, &[]),
|
|
("bean", "Bean", AnimClass::Path, 31, 2000, &[]),
|
|
("peanut", "Peanut", AnimClass::Path, 27, 2000, &[]),
|
|
("neutron", "Neutron", AnimClass::Path, 29, 2000, &[]),
|
|
("customPath", "Custom Path", AnimClass::Path, 0, 2000, &[]),
|
|
("play", "Play", AnimClass::Media, 1, 0, &[]),
|
|
("pause", "Pause", AnimClass::Media, 2, 0, &[]),
|
|
("stop", "Stop", AnimClass::Media, 3, 0, &[]),
|
|
];
|
|
|
|
pub fn animation_info(effect: &str, class: AnimClass) -> Option<&'static (&'static str, &'static str, AnimClass, u32, u32, &'static [&'static str])> {
|
|
ANIMATIONS.iter().find(|a| a.0 == effect && a.2 == class).or_else(|| ANIMATIONS.iter().find(|a| a.0 == effect))
|
|
}
|
|
|
|
/// The path of a motion-path preset beyond Lines, Arcs, Turns, Shapes and Loops, in slide
|
|
/// fractions from the shape's position (our path syntax: `M`, `L`, `Z`, ending in `E`).
|
|
/// `None` for an effect that isn't one of these presets.
|
|
pub fn preset_path(effect: &str) -> Option<String> {
|
|
use std::f64::consts::{PI, TAU};
|
|
use std::fmt::Write;
|
|
// Sample `f` over 0..=1 into a polyline starting at (0, 0).
|
|
fn poly(n: usize, closed: bool, f: impl Fn(f64) -> (f64, f64)) -> String {
|
|
let (x0, y0) = f(0.0);
|
|
let mut s = String::from("M 0 0");
|
|
for k in 1..=n {
|
|
let (x, y) = f(k as f64 / n as f64);
|
|
let _ = write!(s, " L {:.4} {:.4}", x - x0, y - y0);
|
|
}
|
|
if closed {
|
|
s.push_str(" Z");
|
|
}
|
|
s.push_str(" E");
|
|
s
|
|
}
|
|
fn pts(p: &[(f64, f64)], closed: bool) -> String {
|
|
let mut s = String::from("M 0 0");
|
|
for (x, y) in p {
|
|
let _ = write!(s, " L {x:.4} {y:.4}");
|
|
}
|
|
if closed {
|
|
s.push_str(" Z");
|
|
}
|
|
s.push_str(" E");
|
|
s
|
|
}
|
|
// A closed curve in polar form r(θ), starting at its top.
|
|
fn polar(scale: f64, r: impl Fn(f64) -> f64) -> String {
|
|
poly(96, true, |t| {
|
|
let a = -PI / 2.0 + TAU * t;
|
|
let rr = r(a + PI / 2.0) * scale;
|
|
(rr * a.cos(), rr * a.sin())
|
|
})
|
|
}
|
|
fn star(n: usize, outer: f64, inner: f64) -> String {
|
|
let mut p = Vec::new();
|
|
let start = (0.0, -outer);
|
|
for k in 1..=2 * n {
|
|
let a = -PI / 2.0 + PI * k as f64 / n as f64;
|
|
let r = if k % 2 == 1 { inner } else { outer };
|
|
p.push((r * a.cos() - start.0, r * a.sin() - start.1));
|
|
}
|
|
pts(&p, true)
|
|
}
|
|
let spiral = |dir: f64| {
|
|
poly(120, false, move |t| {
|
|
let r = 0.12 * (1.0 - t);
|
|
let a = dir * 3.0 * TAU * t;
|
|
(dir * (0.12 - r * a.cos()), -r * a.sin())
|
|
})
|
|
};
|
|
let bounce = |dir: f64| poly(90, false, move |t| (dir * 0.3 * t, 0.15 * t - 0.1 * (1.0 - t) * (3.0 * PI * t).sin().abs()));
|
|
Some(match effect {
|
|
"diagonalDownRight" => pts(&[(0.2, 0.2)], false),
|
|
"diagonalUpRight" => pts(&[(0.2, -0.2)], false),
|
|
"zigzag" => pts(&[(0.05, 0.04), (0.1, 0.0), (0.15, 0.04), (0.2, 0.0), (0.25, 0.04), (0.3, 0.0)], false),
|
|
"sineWave" => poly(64, false, |t| (0.3 * t, 0.04 * (2.0 * TAU * t).sin())),
|
|
"pathWave" => poly(48, false, |t| (0.3 * t, 0.06 * (TAU * t).sin())),
|
|
"decayingWave" => poly(96, false, |t| (0.3 * t, 0.07 * (-3.0 * t).exp() * (3.0 * TAU * t).sin())),
|
|
"heartbeat" => pts(&[(0.08, 0.0), (0.1, -0.08), (0.13, 0.06), (0.15, 0.0), (0.25, 0.0)], false),
|
|
"sCurve1" => poly(48, false, |t| (0.2 * t, 0.1 - 0.1 * (PI * t).cos())),
|
|
"sCurve2" => poly(48, false, |t| (0.1 - 0.1 * (PI * t).cos(), 0.2 * t)),
|
|
"stairsDown" => pts(&[(0.06, 0.0), (0.06, 0.06), (0.12, 0.06), (0.12, 0.12), (0.18, 0.12), (0.18, 0.18)], false),
|
|
"bounceRight" => bounce(1.0),
|
|
"bounceLeft" => bounce(-1.0),
|
|
"spiralRight" => spiral(1.0),
|
|
"spiralLeft" => spiral(-1.0),
|
|
"spring" => poly(160, false, |t| (0.3 * t + 0.03 * (5.0 * TAU * t).cos(), 0.03 * (5.0 * TAU * t).sin())),
|
|
"funnel" => poly(160, false, |t| {
|
|
let r = 0.12 * (1.0 - t);
|
|
(r * (3.0 * TAU * t).cos(), 0.25 * t + 0.03 * (3.0 * TAU * t).sin() * (1.0 - t))
|
|
}),
|
|
"swoosh" => poly(48, false, |t| (0.3 * t, -0.12 * (PI * t).sin() + 0.1 * t * t)),
|
|
"star4" => star(4, 0.1, 0.04),
|
|
"star5" => star(5, 0.1, 0.04),
|
|
"star6" => star(6, 0.1, 0.05),
|
|
"star8" => star(8, 0.1, 0.06),
|
|
"heart" => poly(96, true, |t| {
|
|
let a = TAU * t;
|
|
(0.006 * 16.0 * a.sin().powi(3), -0.006 * (13.0 * a.cos() - 5.0 * (2.0 * a).cos() - 2.0 * (3.0 * a).cos() - (4.0 * a).cos()))
|
|
}),
|
|
"crescentMoon" => {
|
|
// The outer arc of a circle, back along a smaller, offset one.
|
|
let mut p: Vec<(f64, f64)> = (1..=32)
|
|
.map(|k| {
|
|
let a = -PI / 2.0 - PI * k as f64 / 32.0;
|
|
(0.1 * a.cos(), 0.1 + 0.1 * a.sin())
|
|
})
|
|
.collect();
|
|
p.extend((1..=32).map(|k| {
|
|
let a = PI / 2.0 - PI * k as f64 / 32.0;
|
|
(0.06 * a.cos() - 0.03, 0.1 + 0.1 * a.sin())
|
|
}));
|
|
pts(&p, true)
|
|
}
|
|
"teardrop" => polar(0.1, |a| 0.6 + 0.4 * (a / 2.0).cos().abs().powf(3.0)),
|
|
"football" => poly(64, true, |t| {
|
|
let a = TAU * t;
|
|
(0.12 * a.sin(), 0.06 * (1.0 - a.cos()) * (1.0 - 0.3 * (2.0 * a).cos().abs()))
|
|
}),
|
|
"plusPath" => pts(
|
|
&[
|
|
(0.04, 0.0),
|
|
(0.04, 0.04),
|
|
(0.08, 0.04),
|
|
(0.08, 0.08),
|
|
(0.04, 0.08),
|
|
(0.04, 0.12),
|
|
(0.0, 0.12),
|
|
(0.0, 0.08),
|
|
(-0.04, 0.08),
|
|
(-0.04, 0.04),
|
|
(0.0, 0.04),
|
|
],
|
|
true,
|
|
),
|
|
"rightTriangle" => pts(&[(0.0, 0.15), (0.15, 0.15)], true),
|
|
"curvedSquare" => poly(96, true, |t| {
|
|
let a = -PI / 2.0 + TAU * t;
|
|
let sg = |v: f64| v.signum() * v.abs().sqrt();
|
|
(0.1 * sg(a.cos()), 0.1 + 0.1 * sg(a.sin()))
|
|
}),
|
|
"figure8Horizontal" => poly(96, true, |t| {
|
|
let a = TAU * t;
|
|
(0.15 * a.sin(), 0.06 * (2.0 * a).sin())
|
|
}),
|
|
"figure8Vertical" => poly(96, true, |t| {
|
|
let a = TAU * t;
|
|
(0.06 * (2.0 * a).sin(), 0.15 * (1.0 - a.cos()))
|
|
}),
|
|
"loopDeLoop" => poly(120, false, |t| (0.3 * t - 0.05 * (2.0 * TAU * t).sin(), -0.05 * (1.0 - (2.0 * TAU * t).cos()))),
|
|
"bean" => polar(0.1, |a| 0.75 + 0.25 * a.cos() + 0.15 * (2.0 * a).cos()),
|
|
"peanut" => polar(0.1, |a| 0.7 + 0.3 * (2.0 * a).cos().abs()),
|
|
"neutron" => polar(0.1, |a| 0.35 + 0.65 * (3.0 * a).cos().abs()),
|
|
_ => return None,
|
|
})
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod option_label_tests {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn transition_option_labels() {
|
|
assert_eq!(transition_option_label("push", "l"), "From Right");
|
|
assert_eq!(transition_option_label("push", "u"), "From Bottom");
|
|
assert_eq!(transition_option_label("wipe", "r"), "From Left");
|
|
assert_eq!(transition_option_label("cover", "ru"), "From Bottom-Left");
|
|
assert_eq!(transition_option_label("ripple", "ru"), "From Bottom-Left");
|
|
assert_eq!(transition_option_label("glitter", "hexU"), "Hexagons From Top");
|
|
assert_eq!(transition_option_label("glitter", "l"), "Diamonds From Left");
|
|
assert_eq!(transition_option_label("wind", "l"), "Left");
|
|
assert_eq!(transition_option_label("pageCurlDouble", "singleR"), "Single Right");
|
|
assert_eq!(transition_option_label("shred", "particlesOut"), "Particles Out");
|
|
assert_eq!(transition_option_label("zoom", "rotate"), "Zoom and Rotate");
|
|
assert_eq!(transition_option_label("split", "vertIn"), "Vertical In");
|
|
for (id, _, _, _, opts) in TRANSITIONS {
|
|
for o in opts.iter() {
|
|
assert!(!transition_option_label(id, o).is_empty(), "{id}/{o}");
|
|
}
|
|
}
|
|
}
|
|
}
|