add history to equirect import

src/action.h

@@ -3,8 +3,9 @@
 class Action
 {
 public:
-    enum class Direction { Undo, Redo } m_direction;
+    enum class Direction { Undo, Redo } m_direction = Direction::Undo;
     bool was_saved = false;
+    Direction reverse_direction() const { return (Direction)(1 - (int)m_direction); }
     virtual void run() = 0;
     virtual void undo() = 0;
     virtual Action* get_redo() = 0;

src/canvas.cpp

@@ -141,7 +141,12 @@ void Canvas::pick_end()
 }
 void Canvas::clear(const glm::vec4& c/*={0,0,0,1}*/)
 {
-    snap_history({ 0, 1, 2, 3, 4, 5 });
+    auto a = new ActionLayerClear;
+    a->m_layer = m_layers[m_current_layer_idx];
+    a->m_snap = std::make_shared<Layer::Snapshot>(a->m_layer->snapshot());
+    a->m_color = c;
+    ActionManager::add(a);
+
     m_layers[m_current_layer_idx]->clear(c);
     m_unsaved = true;
 }
@@ -1638,24 +1643,35 @@ void Canvas::clear_context()
     }
 };
 
-void Canvas::import_equirectangular(std::string file_path)
+void Canvas::import_equirectangular(std::string file_path, std::shared_ptr<Layer> layer /*= nullptr*/)
 {
-    std::thread t(&Canvas::import_equirectangular_thread, this, file_path);
+    std::thread t(&Canvas::import_equirectangular_thread, this, file_path, layer);
     t.detach();
 }
 
-void Canvas::import_equirectangular_thread(std::string file_path)
+void Canvas::import_equirectangular_thread(std::string file_path, std::shared_ptr<Layer> layer /*= nullptr*/)
 {
     BT_SetTerminate();
+
+    Image img;
+    if (!img.load_file(file_path))
+        return;
+
     App::I.async_start();
+
+    if (!layer)
+        layer = m_layers[m_current_layer_idx];
     
     gl_state gl;
     gl.save();
-    snap_history({0,1,2,3,4,5});
-    m_unsaved = true;
 
-    Image img;
-    img.load_file(file_path);
+    auto a = new ActionImportEquirect;
+    a->m_layer = layer;
+    a->m_snap = std::make_shared<Layer::Snapshot>(layer->snapshot());
+    a->m_path = file_path;
+    ActionManager::add(a);
+
+    m_unsaved = true;
 
     if (img.width == img.height / 6)
     {
@@ -1702,8 +1718,8 @@ void Canvas::import_equirectangular_thread(std::string file_path)
     }
     for (int i = 0; i < 6; i++)
     {
-        m_layers[m_current_layer_idx]->m_dirty_box[i] = glm::vec4(0, 0, m_width, m_height);
-        m_layers[m_current_layer_idx]->m_dirty_face[i] = true;
+        layer->m_dirty_box[i] = glm::vec4(0, 0, m_width, m_height);
+        layer->m_dirty_face[i] = true;
     }
     App::I.async_update();
     gl.restore();

src/canvas.h

@@ -200,8 +200,8 @@ public:
     void snapshot_restore();
     void snap_history(const std::vector<int>& planes);
     void clear_context();
-    void import_equirectangular(std::string file_path);
-    void import_equirectangular_thread(std::string file_path);
+    void import_equirectangular(std::string file_path, std::shared_ptr<Layer> layer = nullptr);
+    void import_equirectangular_thread(std::string file_path, std::shared_ptr<Layer> layer = nullptr);
     void export_equirectangular(std::string file_path, std::function<void()> on_complete = nullptr);
     void export_equirectangular_thread(std::string file_path);
     void export_layers(std::string file_name, std::function<void()> on_complete = nullptr);

src/canvas_actions.cpp

@@ -96,3 +96,51 @@ Action* ActionStroke::get_redo()
     action->clear_layer = false;
     return action;
 }
+
+//////////////////////////////////////////////////////////////////////////
+
+Action* ActionLayerClear::get_redo()
+{
+    auto a = new ActionLayerClear;
+    a->m_direction = reverse_direction();
+    a->m_snap = m_snap;
+    a->m_layer = m_layer;
+    a->m_color = m_color;
+    return a;
+}
+
+void ActionLayerClear::undo()
+{
+    if (m_direction == Direction::Undo)
+    {
+        m_layer->restore(*m_snap);
+    }
+    else
+    {
+        m_layer->clear(m_color);
+    }
+}
+
+//////////////////////////////////////////////////////////////////////////
+
+Action* ActionImportEquirect::get_redo()
+{
+    auto a = new ActionImportEquirect;
+    a->m_direction = reverse_direction();
+    a->m_snap = m_snap;
+    a->m_layer = m_layer;
+    a->m_path = m_path;
+    return a;
+}
+
+void ActionImportEquirect::undo()
+{
+    if (m_direction == Direction::Undo)
+    {
+        m_layer->restore(*m_snap);
+    }
+    else
+    {
+        Canvas::I->import_equirectangular_thread(m_path, m_layer);
+    }
+}

src/canvas_actions.h

@@ -18,3 +18,25 @@ public:
     virtual void undo() override;
     virtual size_t memory() override;
 };
+
+struct ActionLayerClear : public Action
+{
+    std::shared_ptr<Layer::Snapshot> m_snap;
+    std::shared_ptr<Layer> m_layer;
+    glm::vec4 m_color;
+    virtual void run() override { }
+    virtual size_t memory() override { return m_snap->memsize(); }
+    virtual Action* get_redo() override;
+    virtual void undo() override;
+};
+
+struct ActionImportEquirect : public Action
+{
+    std::shared_ptr<Layer::Snapshot> m_snap;
+    std::shared_ptr<Layer> m_layer;
+    std::string m_path;
+    virtual void run() override { }
+    virtual size_t memory() override { return m_snap->memsize(); }
+    virtual Action* get_redo() override;
+    virtual void undo() override;
+};

src/canvas_modes.cpp

@@ -1577,7 +1577,7 @@ void CanvasModeFloodFill::on_MouseEvent(MouseEvent* me, glm::vec2& loc)
         virtual Action* get_redo() override
         {
             auto a = new ActionFloodFill;
-            a->m_direction = (Direction)(1 - (int)m_direction);
+            a->m_direction = reverse_direction();
             a->m_layer = m_layer;
             a->m_snap = m_snap;
             a->m_pos = m_pos;

src/node_panel_layer.cpp

@@ -507,7 +507,7 @@ Action* ActionLayerMerge::get_redo()
     a->m_layer_node = m_layer_node;
     a->m_panel = m_panel;
     a->m_snap = m_snap;
-    a->m_direction = m_direction == Direction::Undo ? Direction::Redo : Direction::Undo;
+    a->m_direction = reverse_direction();
     return a;
 }