add new pan operation: center_mouse

1 files changed, 15 insertions, 13 deletions

diff --git a/src/app.rs b/src/app.rs
index e69794f..61b2657 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -283,6 +283,7 @@ impl<'ctx> AppState<'ctx> {
         }
     }
 
+    // recenters the viewport
     pub fn center_grid(&mut self) {
         let (winsize_x, winsize_y) = self.canvas.window().size();
         let grid_width = self.width() * self.zoom as u32;
@@ -293,6 +294,17 @@ impl<'ctx> AppState<'ctx> {
         );
     }
 
+    // brings the pixel under the mouse to win center
+    pub fn center_mouse(&mut self) {
+        let win_size = self.canvas.window().size();
+        let win_center = ((win_size.0 / 2) as i32, (win_size.1 / 2) as i32);
+        self.context
+            .mouse()
+            .warp_mouse_in_window(self.canvas.window(), win_center.0, win_center.1);
+        let delta = Point::from(self.mouse) - Point::from(win_center);
+        self.start -= delta;
+    }
+
     pub fn reduce_intensity(&mut self) {
         if self.dither_level > 0 {
             self.dither_level -= 1;
@@ -804,16 +816,6 @@ impl<'ctx> AppState<'ctx> {
                                         }
                                         continue;
                                     }
-                                    Keycode::LCtrl | Keycode::RCtrl => {
-                                        self.brush = Brush::line(
-                                            self.cache
-                                                .borrow()
-                                                .as_ref()
-                                                .map(|c| c.last_brush.size().unwrap_or(0))
-                                                .unwrap_or(0),
-                                            true,
-                                        );
-                                    }
                                     _ => (),
                                 }
                             }
@@ -822,8 +824,9 @@ impl<'ctx> AppState<'ctx> {
                                 keymod,
                                 ..
                             } if self.keybinds.contains_key(&Keybind::new(k, keymod)) => {
-                                let body = self.keybinds.get(&Keybind::new(k, keymod)).unwrap();
-                                self.eval_expr(&body.clone());
+                                let body =
+                                    self.keybinds.get(&Keybind::new(k, keymod)).unwrap().clone();
+                                self.eval_expr(&body);
                             }
                             Event::KeyDown {
                                 keycode: Some(k), ..
@@ -1071,7 +1074,6 @@ impl<'ctx> AppState<'ctx> {
                     }
                 }
             }
-            self.cache();
             self.redraw();
         }
     }