Merge pull request #1748 from iced-rs/feature/software-renderer

Software renderer, runtime renderer fallback, and core consolidation

1 files changed, 78 insertions, 0 deletions

diff --git a/core/src/event.rs b/core/src/event.rs
new file mode 100644
index 00000000..953cd73f
--- /dev/null
+++ b/core/src/event.rs
@@ -0,0 +1,78 @@
+//! Handle events of a user interface.
+use crate::keyboard;
+use crate::mouse;
+use crate::touch;
+use crate::window;
+
+/// A user interface event.
+///
+/// _**Note:** This type is largely incomplete! If you need to track
+/// additional events, feel free to [open an issue] and share your use case!_
+///
+/// [open an issue]: https://github.com/iced-rs/iced/issues
+#[derive(Debug, Clone, PartialEq)]
+pub enum Event {
+    /// A keyboard event
+    Keyboard(keyboard::Event),
+
+    /// A mouse event
+    Mouse(mouse::Event),
+
+    /// A window event
+    Window(window::Event),
+
+    /// A touch event
+    Touch(touch::Event),
+
+    /// A platform specific event
+    PlatformSpecific(PlatformSpecific),
+}
+
+/// A platform specific event
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum PlatformSpecific {
+    /// A MacOS specific event
+    MacOS(MacOS),
+}
+
+/// Describes an event specific to MacOS
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum MacOS {
+    /// Triggered when the app receives an URL from the system
+    ///
+    /// _**Note:** For this event to be triggered, the executable needs to be properly [bundled]!_
+    ///
+    /// [bundled]: https://developer.apple.com/library/archive/documentation/CoreFoundation/Conceptual/CFBundles/BundleTypes/BundleTypes.html#//apple_ref/doc/uid/10000123i-CH101-SW19
+    ReceivedUrl(String),
+}
+
+/// The status of an [`Event`] after being processed.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum Status {
+    /// The [`Event`] was **NOT** handled by any widget.
+    Ignored,
+
+    /// The [`Event`] was handled and processed by a widget.
+    Captured,
+}
+
+impl Status {
+    /// Merges two [`Status`] into one.
+    ///
+    /// `Captured` takes precedence over `Ignored`:
+    ///
+    /// ```
+    /// use iced_core::event::Status;
+    ///
+    /// assert_eq!(Status::Ignored.merge(Status::Ignored), Status::Ignored);
+    /// assert_eq!(Status::Ignored.merge(Status::Captured), Status::Captured);
+    /// assert_eq!(Status::Captured.merge(Status::Ignored), Status::Captured);
+    /// assert_eq!(Status::Captured.merge(Status::Captured), Status::Captured);
+    /// ```
+    pub fn merge(self, b: Self) -> Self {
+        match self {
+            Status::Ignored => b,
+            Status::Captured => Status::Captured,
+        }
+    }
+}