forked from mirrors/gstreamer-rs
video: Implement De/Serialization for NavigationModifierType
Modifier state is represented by a "+" separated list of lowercase flag names, or "empty" for no flags.
This commit is contained in:
Vivienne Watermeier
parent
8d001d8b16
commit
3b18f10342
1 changed files with 155 additions and 19 deletions
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@ -9,6 +9,10 @@ use std::mem;
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#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_22")))]
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use crate::NavigationModifierType;
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#[cfg(all(feature = "ser_de", any(feature = "v1_22", feature = "dox")))]
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#[cfg_attr(feature = "dox", feature = "ser_de", doc(cfg(feature = "v1_22")))]
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use glib::{FlagsClass, StaticType};
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// FIXME: Copy from gstreamer/src/event.rs
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macro_rules! event_builder_generic_impl {
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($new_fn:expr) => {
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@ -1226,7 +1230,6 @@ impl NavigationEvent {
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};
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#[cfg(any(feature = "v1_22", feature = "dox"))]
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#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_22")))]
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if true {
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structure = match self {
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Self::MouseMove { modifier_state, .. } => structure.field("state", modifier_state),
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@ -1264,16 +1267,96 @@ impl NavigationEvent {
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}
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}
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#[cfg(all(feature = "ser_de", any(feature = "v1_22", feature = "dox")))]
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#[cfg_attr(feature = "dox", feature = "ser_de", doc(cfg(feature = "v1_22")))]
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impl serde::Serialize for NavigationModifierType {
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
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where
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S: serde::Serializer,
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{
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let class = FlagsClass::new(NavigationModifierType::static_type()).unwrap();
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let mut handled = NavigationModifierType::empty();
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let mut res = "".to_owned();
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for v in class.values() {
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let value = v.value();
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if value.count_ones() != 1 || value & handled.bits() != 0 {
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continue;
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} else if (value & self.bits()) == value {
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if !res.is_empty() {
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res.push('+');
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}
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res.push_str(v.nick());
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handled.insert(NavigationModifierType::from_bits(value).unwrap());
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}
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}
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if res.is_empty() {
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res = "empty".to_owned();
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}
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serializer.serialize_str(&res)
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}
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}
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#[cfg(all(feature = "ser_de", any(feature = "v1_22", feature = "dox")))]
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#[cfg_attr(feature = "dox", feature = "ser_de", doc(cfg(feature = "v1_22")))]
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struct NavigationModifierTypeVisitor;
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#[cfg(all(feature = "ser_de", any(feature = "v1_22", feature = "dox")))]
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#[cfg_attr(feature = "dox", feature = "ser_de", doc(cfg(feature = "v1_22")))]
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impl<'de> serde::de::Visitor<'de> for NavigationModifierTypeVisitor {
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type Value = NavigationModifierType;
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fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
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formatter.write_str("one or more mask names separated by plus signs, or \"empty\"")
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}
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fn visit_str<E: serde::de::Error>(self, value: &str) -> std::result::Result<Self::Value, E> {
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let mut gvalue = glib::Value::from_type(NavigationModifierType::static_type());
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let tokens = value.split('+');
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let class = FlagsClass::new(NavigationModifierType::static_type()).unwrap();
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for token in tokens {
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gvalue = class
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.set_by_nick(gvalue, token)
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.map_err(|_| serde::de::Error::custom(&format!("Invalid value: {}", token)))?;
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}
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Ok(unsafe {
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from_glib(glib::gobject_ffi::g_value_get_flags(
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gvalue.to_glib_none().0,
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))
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})
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}
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}
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#[cfg(all(feature = "ser_de", any(feature = "v1_22", feature = "dox")))]
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#[cfg_attr(feature = "dox", feature = "ser_de", doc(cfg(feature = "v1_22")))]
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impl<'de> serde::Deserialize<'de> for NavigationModifierType {
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fn deserialize<D: serde::de::Deserializer<'de>>(
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deserializer: D,
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) -> std::result::Result<Self, D::Error> {
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skip_assert_initialized!();
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deserializer.deserialize_str(NavigationModifierTypeVisitor)
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}
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}
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#[cfg(test)]
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mod tests {
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#[test]
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#[cfg(feature = "ser_de")]
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#[cfg(any(feature = "v1_22", feature = "dox"))]
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#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_22")))]
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fn serialize_navigation_events() {
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use crate::NavigationEvent;
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use crate::{NavigationEvent, NavigationModifierType};
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gst::init().unwrap();
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let ev = NavigationEvent::new_mouse_scroll(1.0, 2.0, 3.0, 4.0).build();
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let mods = NavigationModifierType::SHIFT_MASK | NavigationModifierType::CONTROL_MASK;
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let ev = NavigationEvent::mouse_scroll_builder(1.0, 2.0, 3.0, 4.0)
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.modifier_state(mods)
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.build();
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let navigation_event = NavigationEvent::parse(&ev).unwrap();
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match &navigation_event {
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NavigationEvent::MouseScroll {
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@ -1281,8 +1364,15 @@ mod tests {
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y,
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delta_x,
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delta_y,
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modifier_state,
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} => {
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assert!(*x == 1.0 && *y == 2.0 && *delta_x == 3.0 && *delta_y == 4.0);
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assert!(
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*x == 1.0
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&& *y == 2.0
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&& *delta_x == 3.0
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&& *delta_y == 4.0
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&& *modifier_state == mods
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);
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}
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_ => unreachable!(),
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}
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@ -1290,7 +1380,7 @@ mod tests {
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let json_event = serde_json::to_string(&navigation_event).unwrap();
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assert_eq!(
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json_event,
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r#"{"event":"MouseScroll","x":1.0,"y":2.0,"delta_x":3.0,"delta_y":4.0}"#
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r#"{"event":"MouseScroll","x":1.0,"y":2.0,"delta_x":3.0,"delta_y":4.0,"modifier_state":"shift-mask+control-mask"}"#
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);
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let navigation_event: NavigationEvent = serde_json::from_str(&json_event).unwrap();
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match &navigation_event {
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@ -1299,8 +1389,15 @@ mod tests {
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y,
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delta_x,
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delta_y,
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modifier_state,
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} => {
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assert!(*x == 1.0 && *y == 2.0 && *delta_x == 3.0 && *delta_y == 4.0);
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assert!(
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*x == 1.0
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&& *y == 2.0
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&& *delta_x == 3.0
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&& *delta_y == 4.0
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&& *modifier_state == mods
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);
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}
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_ => unreachable!(),
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}
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@ -1308,8 +1405,18 @@ mod tests {
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let ev = NavigationEvent::new_mouse_button_press(1, 1.0, 2.0).build();
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let navigation_event = NavigationEvent::parse(&ev).unwrap();
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match &navigation_event {
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NavigationEvent::MouseButtonPress { button, x, y } => {
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assert!(*button == 1 && *x == 1.0 && *y == 2.0);
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NavigationEvent::MouseButtonPress {
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button,
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x,
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y,
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modifier_state,
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} => {
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assert!(
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*button == 1
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&& *x == 1.0
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&& *y == 2.0
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&& *modifier_state == NavigationModifierType::empty()
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);
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}
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_ => unreachable!(),
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}
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@ -1317,26 +1424,47 @@ mod tests {
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let json_event = serde_json::to_string(&navigation_event).unwrap();
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assert_eq!(
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json_event,
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r#"{"event":"MouseButtonPress","button":1,"x":1.0,"y":2.0}"#
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r#"{"event":"MouseButtonPress","button":1,"x":1.0,"y":2.0,"modifier_state":"empty"}"#
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);
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let ev = NavigationEvent::new_key_release("a").build();
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let mods = NavigationModifierType::META_MASK;
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let ev = NavigationEvent::key_release_builder("a")
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.modifier_state(mods)
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.build();
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let navigation_event = NavigationEvent::parse(&ev).unwrap();
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match &navigation_event {
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NavigationEvent::KeyRelease { key } => {
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assert_eq!(key, "a");
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NavigationEvent::KeyRelease {
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key,
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modifier_state,
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} => {
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assert!(*key == "a" && *modifier_state == mods);
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}
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_ => unreachable!(),
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}
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let json_event = serde_json::to_string(&navigation_event).unwrap();
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assert_eq!(json_event, r#"{"event":"KeyRelease","key":"a"}"#);
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assert_eq!(
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json_event,
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r#"{"event":"KeyRelease","key":"a","modifier_state":"meta-mask"}"#
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);
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let ev = NavigationEvent::new_touch_motion(0, 1.0, 2.0, 0.5).build();
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let navigation_event = NavigationEvent::parse(&ev).unwrap();
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match &navigation_event {
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NavigationEvent::TouchMotion { id, x, y, pressure } => {
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assert!(*id == 0 && *x = 1.0 && *y == 2.0 && *pressure == 0.5);
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NavigationEvent::TouchMotion {
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identifier,
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x,
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y,
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pressure,
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modifier_state,
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} => {
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assert!(
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*identifier == 0
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&& *x == 1.0
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&& *y == 2.0
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&& *pressure == 0.5
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&& *modifier_state == NavigationModifierType::empty()
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);
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}
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_ => unreachable!(),
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}
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@ -1344,14 +1472,22 @@ mod tests {
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let json_event = serde_json::to_string(&navigation_event).unwrap();
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assert_eq!(
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json_event,
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r#"{"event":"TouchMotion","identifier":0,"x":1.0,"y":2.0,"pressure":0.5}"#
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r#"{"event":"TouchMotion","identifier":0,"x":1.0,"y":2.0,"pressure":0.5,"modifier_state":"empty"}"#
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);
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let ev = NavigationEvent::new_touch_cancel().build();
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let ev = NavigationEvent::touch_cancel_builder().build();
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let navigation_event = NavigationEvent::parse(&ev).unwrap();
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assert!(matches!(&navigation_event, NavigationEvent::TouchCancel {}));
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match &navigation_event {
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NavigationEvent::TouchCancel { modifier_state } => {
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assert!(*modifier_state == NavigationModifierType::empty());
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}
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_ => unreachable!(),
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}
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let json_event = serde_json::to_string(&navigation_event).unwrap();
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assert_eq!(json_event, r#"{"event":"TouchCancel"}"#);
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assert_eq!(
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json_event,
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r#"{"event":"TouchCancel","modifier_state":"empty"}"#
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);
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}
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}
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