feat: legible ReaSampler 9000 editor — bigger knobs, ms time constants, per-ring double-click reset, and an antialiased draw pass

src/shell/instrument/editor_platform.cpp

@@ -79,7 +79,10 @@ void ReaSamplerEditor::attachedToParent() {
         wc.hInstance = hInst;
         wc.lpszClassName = kChildClassName;
         wc.hCursor = LoadCursor(nullptr, IDC_ARROW);
-        wc.style = CS_HREDRAW | CS_VREDRAW;
+        // CS_DBLCLKS is what makes WM_LBUTTONDBLCLK arrive at all. It also REPLACES the second
+        // WM_LBUTTONDOWN of a double-click, so every surface that counted two downs (Browse's
+        // load accelerator) depends on the DBLCLK handler falling through to onMouseDown.
+        wc.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
         RegisterClassW(&wc);
         classRegistered = true;
     }
@@ -150,6 +153,17 @@ LRESULT CALLBACK ReaSamplerEditor::wndProc(HWND hwnd, UINT msg, WPARAM wParam,
                 self->onMouseDown(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam));
             }
             return 0;
+        case WM_LBUTTONDBLCLK:
+            if (self) {
+                SetCapture(hwnd);
+                SetFocus(hwnd);
+                const int mx = GET_X_LPARAM(lParam);
+                const int my = GET_Y_LPARAM(lParam);
+                // Knob reset first; anything it does not claim is the second click of the pair
+                // this message stands in for (see the class-style note above).
+                if (!self->onMouseDoubleClick(mx, my)) self->onMouseDown(mx, my);
+            }
+            return 0;
         case WM_MOUSEMOVE:
             if (self) {
                 const int mx = GET_X_LPARAM(lParam);
@@ -202,6 +216,11 @@ LRESULT CALLBACK ReaSamplerEditor::wndProc(HWND hwnd, UINT msg, WPARAM wParam,
             // explicitly (the child wndproc historically handled only left-button).
             if (self) self->onMouseRDown(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam));
             return 0;
+        case WM_RBUTTONDBLCLK:
+            // CS_DBLCLKS replaces the second RIGHT-button down too, so the spline surfaces'
+            // repeat-delete needs this peer or a fast double right-click drops one delete.
+            if (self) self->onMouseRDown(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam));
+            return 0;
         case WM_RBUTTONUP:
             return 0;  // claimed so the pair never reaches DefWindowProc (no context menu)
         case WM_CAPTURECHANGED: