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-rw-r--r--examples/pane_grid/src/main.rs2
-rw-r--r--native/src/widget/pane_grid.rs233
-rw-r--r--native/src/widget/pane_grid/axis.rs24
3 files changed, 155 insertions, 104 deletions
diff --git a/examples/pane_grid/src/main.rs b/examples/pane_grid/src/main.rs
index b4bbd68f..a821072f 100644
--- a/examples/pane_grid/src/main.rs
+++ b/examples/pane_grid/src/main.rs
@@ -103,7 +103,7 @@ impl Sandbox for Example {
.height(Length::Fill)
.spacing(10)
.on_drag(Message::Dragged)
- .on_resize(Message::Resized)
+ .on_resize(10, Message::Resized)
.on_key_press(handle_hotkey);
Container::new(pane_grid)
diff --git a/native/src/widget/pane_grid.rs b/native/src/widget/pane_grid.rs
index 076ae76f..2d21a968 100644
--- a/native/src/widget/pane_grid.rs
+++ b/native/src/widget/pane_grid.rs
@@ -26,7 +26,7 @@ pub use state::{Focus, State};
use crate::{
keyboard, layout, mouse, Clipboard, Element, Event, Hasher, Layout, Length,
- Point, Size, Widget,
+ Point, Rectangle, Size, Widget,
};
/// A collection of panes distributed using either vertical or horizontal splits
@@ -76,7 +76,7 @@ use crate::{
/// }.into()
/// })
/// .on_drag(Message::PaneDragged)
-/// .on_resize(Message::PaneResized);
+/// .on_resize(10, Message::PaneResized);
/// ```
///
/// [`PaneGrid`]: struct.PaneGrid.html
@@ -91,7 +91,7 @@ pub struct PaneGrid<'a, Message, Renderer> {
spacing: u16,
modifier_keys: keyboard::ModifiersState,
on_drag: Option<Box<dyn Fn(DragEvent) -> Message + 'a>>,
- on_resize: Option<Box<dyn Fn(ResizeEvent) -> Message + 'a>>,
+ on_resize: Option<(u16, Box<dyn Fn(ResizeEvent) -> Message + 'a>)>,
on_key_press: Option<Box<dyn Fn(KeyPressEvent) -> Option<Message> + 'a>>,
}
@@ -177,8 +177,8 @@ impl<'a, Message, Renderer> PaneGrid<'a, Message, Renderer> {
/// Sets the modifier keys of the [`PaneGrid`].
///
- /// The modifier keys will need to be pressed to trigger dragging, resizing,
- /// and key events.
+ /// The modifier keys will need to be pressed to trigger dragging, and key
+ /// events.
///
/// The default modifier key is `Ctrl`.
///
@@ -208,14 +208,19 @@ impl<'a, Message, Renderer> PaneGrid<'a, Message, Renderer> {
/// Enables the resize interactions of the [`PaneGrid`], which will
/// use the provided function to produce messages.
///
- /// Panes can be resized using `Modifier keys + Right click`.
+ /// The `leeway` describes the amount of space around a split that can be
+ /// used to grab it.
+ ///
+ /// The grabbable area of a split will have a length of `spacing + leeway`,
+ /// properly centered. In other words, a length of
+ /// `(spacing + leeway) / 2.0` on either side of the split line.
///
/// [`PaneGrid`]: struct.PaneGrid.html
- pub fn on_resize<F>(mut self, f: F) -> Self
+ pub fn on_resize<F>(mut self, leeway: u16, f: F) -> Self
where
F: 'a + Fn(ResizeEvent) -> Message,
{
- self.on_resize = Some(Box::new(f));
+ self.on_resize = Some((leeway, Box::new(f)));
self
}
@@ -244,13 +249,42 @@ impl<'a, Message, Renderer> PaneGrid<'a, Message, Renderer> {
self
}
+ fn click_pane(
+ &mut self,
+ layout: Layout<'_>,
+ cursor_position: Point,
+ messages: &mut Vec<Message>,
+ ) {
+ let mut clicked_region =
+ self.elements.iter().zip(layout.children()).filter(
+ |(_, layout)| layout.bounds().contains(cursor_position),
+ );
+
+ if let Some(((pane, _), _)) = clicked_region.next() {
+ match &self.on_drag {
+ Some(on_drag)
+ if self.pressed_modifiers.matches(self.modifier_keys) =>
+ {
+ self.state.pick_pane(pane);
+
+ messages.push(on_drag(DragEvent::Picked { pane: *pane }));
+ }
+ _ => {
+ self.state.focus(pane);
+ }
+ }
+ } else {
+ self.state.unfocus();
+ }
+ }
+
fn trigger_resize(
&mut self,
layout: Layout<'_>,
cursor_position: Point,
messages: &mut Vec<Message>,
) {
- if let Some(on_resize) = &self.on_resize {
+ if let Some((_, on_resize)) = &self.on_resize {
if let Some((split, _)) = self.state.picked_split() {
let bounds = layout.bounds();
@@ -409,32 +443,45 @@ where
match event {
Event::Mouse(mouse_event) => match mouse_event {
mouse::Event::ButtonPressed(mouse::Button::Left) => {
- let mut clicked_region =
- self.elements.iter().zip(layout.children()).filter(
- |(_, layout)| {
- layout.bounds().contains(cursor_position)
- },
- );
-
- if let Some(((pane, _), _)) = clicked_region.next() {
- match &self.on_drag {
- Some(on_drag)
- if self
- .pressed_modifiers
- .matches(self.modifier_keys) =>
- {
- self.state.pick_pane(pane);
-
- messages.push(on_drag(DragEvent::Picked {
- pane: *pane,
- }));
+ let bounds = layout.bounds();
+
+ if bounds.contains(cursor_position) {
+ match self.on_resize {
+ Some((leeway, _)) => {
+ let relative_cursor = Point::new(
+ cursor_position.x - bounds.x,
+ cursor_position.y - bounds.y,
+ );
+
+ let splits = self.state.splits(
+ f32::from(self.spacing),
+ Size::new(bounds.width, bounds.height),
+ );
+
+ let clicked_split = hovered_split(
+ splits.iter(),
+ f32::from(self.spacing + leeway),
+ relative_cursor,
+ );
+
+ if let Some((split, axis)) = clicked_split {
+ self.state.pick_split(&split, axis);
+ } else {
+ self.click_pane(
+ layout,
+ cursor_position,
+ messages,
+ );
+ }
}
- _ => {
- self.state.focus(pane);
+ None => {
+ self.click_pane(
+ layout,
+ cursor_position,
+ messages,
+ );
}
}
- } else {
- self.state.unfocus();
}
}
mouse::Event::ButtonReleased(mouse::Button::Left) => {
@@ -462,78 +509,10 @@ where
messages.push(on_drag(event));
}
+ } else if self.state.picked_split().is_some() {
+ self.state.drop_split();
}
}
- mouse::Event::ButtonPressed(mouse::Button::Right)
- if self.on_resize.is_some()
- && self.state.picked_pane().is_none()
- && self
- .pressed_modifiers
- .matches(self.modifier_keys) =>
- {
- let bounds = layout.bounds();
-
- if bounds.contains(cursor_position) {
- let relative_cursor = Point::new(
- cursor_position.x - bounds.x,
- cursor_position.y - bounds.y,
- );
-
- let splits = self.state.splits(
- f32::from(self.spacing),
- Size::new(bounds.width, bounds.height),
- );
-
- let mut sorted_splits: Vec<_> = splits
- .iter()
- .filter(|(_, (axis, rectangle, _))| match axis {
- Axis::Horizontal => {
- relative_cursor.x > rectangle.x
- && relative_cursor.x
- < rectangle.x + rectangle.width
- }
- Axis::Vertical => {
- relative_cursor.y > rectangle.y
- && relative_cursor.y
- < rectangle.y + rectangle.height
- }
- })
- .collect();
-
- sorted_splits.sort_by_key(
- |(_, (axis, rectangle, ratio))| {
- let distance = match axis {
- Axis::Horizontal => (relative_cursor.y
- - (rectangle.y
- + rectangle.height * ratio))
- .abs(),
- Axis::Vertical => (relative_cursor.x
- - (rectangle.x
- + rectangle.width * ratio))
- .abs(),
- };
-
- distance.round() as u32
- },
- );
-
- if let Some((split, (axis, _, _))) =
- sorted_splits.first()
- {
- self.state.pick_split(split, *axis);
- self.trigger_resize(
- layout,
- cursor_position,
- messages,
- );
- }
- }
- }
- mouse::Event::ButtonReleased(mouse::Button::Right)
- if self.state.picked_split().is_some() =>
- {
- self.state.drop_split();
- }
mouse::Event::CursorMoved { .. } => {
self.trigger_resize(layout, cursor_position, messages);
}
@@ -597,11 +576,37 @@ where
layout: Layout<'_>,
cursor_position: Point,
) -> Renderer::Output {
+ let picked_split = self
+ .state
+ .picked_split()
+ .or_else(|| match self.on_resize {
+ Some((leeway, _)) => {
+ let bounds = layout.bounds();
+
+ let relative_cursor = Point::new(
+ cursor_position.x - bounds.x,
+ cursor_position.y - bounds.y,
+ );
+
+ let splits = self
+ .state
+ .splits(f32::from(self.spacing), bounds.size());
+
+ hovered_split(
+ splits.iter(),
+ f32::from(self.spacing + leeway),
+ relative_cursor,
+ )
+ }
+ None => None,
+ })
+ .map(|(_, axis)| axis);
+
renderer.draw(
defaults,
&self.elements,
self.state.picked_pane(),
- self.state.picked_split().map(|(_, axis)| axis),
+ picked_split,
layout,
cursor_position,
)
@@ -665,3 +670,25 @@ where
Element::new(pane_grid)
}
}
+
+/*
+ * Helpers
+ */
+fn hovered_split<'a>(
+ splits: impl Iterator<Item = (&'a Split, &'a (Axis, Rectangle, f32))>,
+ spacing: f32,
+ cursor_position: Point,
+) -> Option<(Split, Axis)> {
+ splits
+ .filter_map(|(split, (axis, region, ratio))| {
+ let bounds =
+ axis.split_line_bounds(*region, *ratio, f32::from(spacing));
+
+ if bounds.contains(cursor_position) {
+ Some((*split, *axis))
+ } else {
+ None
+ }
+ })
+ .next()
+}
diff --git a/native/src/widget/pane_grid/axis.rs b/native/src/widget/pane_grid/axis.rs
index b3a306d5..2320cb7c 100644
--- a/native/src/widget/pane_grid/axis.rs
+++ b/native/src/widget/pane_grid/axis.rs
@@ -53,6 +53,30 @@ impl Axis {
}
}
}
+
+ pub(super) fn split_line_bounds(
+ &self,
+ rectangle: Rectangle,
+ ratio: f32,
+ spacing: f32,
+ ) -> Rectangle {
+ match self {
+ Axis::Horizontal => Rectangle {
+ x: rectangle.x,
+ y: (rectangle.y + rectangle.height * ratio - spacing / 2.0)
+ .round(),
+ width: rectangle.width,
+ height: spacing,
+ },
+ Axis::Vertical => Rectangle {
+ x: (rectangle.x + rectangle.width * ratio - spacing / 2.0)
+ .round(),
+ y: rectangle.y,
+ width: spacing,
+ height: rectangle.height,
+ },
+ }
+ }
}
#[cfg(test)]
generated by cgit (git 2.34.1) at 2025-04-16 01:22:38 +0000