Add Plot::allow_scroll

emilk · Mar 20, 2022 · e1d04ae · e1d04ae
1 parent 465c961
commit e1d04ae
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Showing 2 changed files with 14 additions and 3 deletions.
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -7,6 +7,7 @@ NOTE: [`epaint`](epaint/CHANGELOG.md), [`eframe`](eframe/CHANGELOG.md), [`egui_w
 ## Unreleased
 
 ### Added ⭐
+* Added `Plot::allow_scroll`, `Plot::allow_zoom` no longer affects scrolling ([#1382](https://github.com/emilk/egui/pull/1382)).
 * Added `Shape::Callback` for backend-specific painting ([#1351](https://github.com/emilk/egui/pull/1351)).
 * Added `Frame::canvas` ([#1362](https://github.com/emilk/egui/pull/1362)).
 * `Context::request_repaint` will wake up UI thread, if integrations has called `Context::set_request_repaint_callback` ([#1366](https://github.com/emilk/egui/pull/1366)).

diff --git a/egui/src/widgets/plot/mod.rs b/egui/src/widgets/plot/mod.rs
@@ -164,6 +164,7 @@ pub struct Plot {
     center_y_axis: bool,
     allow_zoom: bool,
     allow_drag: bool,
+    allow_scroll: bool,
     min_auto_bounds: PlotBounds,
     margin_fraction: Vec2,
     allow_boxed_zoom: bool,
@@ -196,6 +197,7 @@ impl Plot {
             center_y_axis: false,
             allow_zoom: true,
             allow_drag: true,
+            allow_scroll: true,
             min_auto_bounds: PlotBounds::NOTHING,
             margin_fraction: Vec2::splat(0.05),
             allow_boxed_zoom: true,
@@ -287,6 +289,12 @@ impl Plot {
         self
     }
 
+    /// Whether to allow scrolling in the plot. Default: `true`.
+    pub fn allow_scroll(mut self, on: bool) -> Self {
+        self.allow_scroll = on;
+        self
+    }
+
     /// Set the side margin as a fraction of the plot size.
     ///
     /// For instance, a value of `0.1` will add 10% space on both sides.
@@ -434,6 +442,7 @@ impl Plot {
             center_x_axis,
             center_y_axis,
             allow_zoom,
+            allow_scroll,
             allow_drag,
             allow_boxed_zoom,
             boxed_zoom_pointer_button: boxed_zoom_pointer,
@@ -660,8 +669,8 @@ impl Plot {
             }
         }
 
-        if allow_zoom {
-            if let Some(hover_pos) = response.hover_pos() {
+        if let Some(hover_pos) = response.hover_pos() {
+            if allow_zoom {
                 let zoom_factor = if data_aspect.is_some() {
                     Vec2::splat(ui.input().zoom_delta())
                 } else {
@@ -671,7 +680,8 @@ impl Plot {
                     transform.zoom(zoom_factor, hover_pos);
                     auto_bounds = false;
                 }
-
+            }
+            if allow_scroll {
                 let scroll_delta = ui.input().scroll_delta;
                 if scroll_delta != Vec2::ZERO {
                     transform.translate_bounds(-scroll_delta);