ifcviewer: scaffold ViewportHost + ViewportCore (Path A step 1)

Define the boundary the Path-A web-bring-up refactor will move things across: - ViewportHost.h is the embedder interface — surface creation, framebuffer geometry, frame scheduling, quit, and notification callbacks (onObjectPicked, onToolModeChanged, …). Desktop hosts forward notifications to Q_SIGNALS; the future web host pushes them to JS callbacks. - ViewportCore.{h,cpp} is the platform-agnostic render-core target. Empty today — the body fills in across the #78-#86 sequence as each Qt subsystem (matrices, vectors, strings, timers, render path, input) gets de-Qt'd and moved over. - ViewportWindow now multiply-inherits ViewportHost alongside QWindow and implements the host overrides as thin forwarders: createSurface returns the cached surface_, requestFrame -> requestUpdate, quit -> QCoreApplication::quit, onObjectPicked -> emit objectPicked. Renamed the DPR accessor `dpr()` (vs `devicePixelRatio`) to avoid the inherited-virtual clash with QWindow's qreal-returning version. No method movement yet — this is purely the architectural scaffold so subsequent commits have a destination.
2026-09-12 22:43:41 +00:00 · 2026-06-04 19:34:51 +10:00
parent e55a360aa2
commit c314dd3ca8
6 changed files with 258 additions and 1 deletions
@@ -0,0 +1,51 @@
+/********************************************************************************
+ *                                                                              *
+ * This file is part of IfcOpenShell.                                           *
+ *                                                                              *
+ * IfcOpenShell is free software: you can redistribute it and/or modify         *
+ * it under the terms of the Lesser GNU General Public License as published by  *
+ * the Free Software Foundation, either version 3.0 of the License, or          *
+ * (at your option) any later version.                                          *
+ *                                                                              *
+ * IfcOpenShell is distributed in the hope that it will be useful,              *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of               *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the                 *
+ * Lesser GNU General Public License for more details.                          *
+ *                                                                              *
+ * You should have received a copy of the Lesser GNU General Public License     *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.         *
+ *                                                                              *
+ ********************************************************************************/
+
+#ifndef VIEWPORTCORE_H
+#define VIEWPORTCORE_H
+
+// Platform-agnostic render core. Owns the wgpu state + scene state +
+// per-frame render path. Talks to its embedder through ViewportHost
+// (window/canvas surface, scheduling, notifications) — has no Qt or
+// browser dependencies of its own.
+//
+// Empty for now: this header / TU is the placeholder for the
+// incremental Path-A refactor (#77-#86). Each subsequent commit moves
+// one subsystem out of ViewportWindow.cpp into here and updates the
+// public surface accordingly. Until that work lands, ViewportWindow
+// retains its render body; this class is just the target for the
+// move.
+
+#include "ViewportHost.h"
+
+class ViewportCore {
+public:
+    explicit ViewportCore(ViewportHost* host);
+    ~ViewportCore();
+
+    ViewportCore(const ViewportCore&)            = delete;
+    ViewportCore& operator=(const ViewportCore&) = delete;
+
+    ViewportHost* host() const { return host_; }
+
+private:
+    ViewportHost* host_;
+};
+
+#endif  // VIEWPORTCORE_H