add duplicate layer

data/layout.xml

@@ -68,6 +68,9 @@
         <button-custom id="btn-add" thickness="1" color="0 0" border-color=".0" shrink="1" margin="0 2 0 5">
           <icon width="30" icon="add"/>
         </button-custom>
+        <button-custom id="btn-duplicate" thickness="1" color="0 0" border-color=".0" shrink="1" margin="0 2 0 5">
+          <icon width="30" icon="page_copy"/>
+        </button-custom>
         <button-custom id="btn-up" thickness="1" color="0 0" border-color=".0" shrink="1" margin="0 2 0 0">
           <icon width="30" icon="bullet_arrow_up"/>
         </button-custom>

src/app_layout.cpp

@@ -170,6 +170,25 @@ void App::init_sidebar()
         title_update();
     };
 
+    layers->on_layer_duplicate = [this](Node*, int source_index) {
+        Canvas::I->layer_add(layers->m_layers.back()->m_label_text.c_str());
+        auto& dst = Canvas::I->m_layers.back();
+        auto& src = Canvas::I->m_layers[Canvas::I->m_order[source_index]];
+        for (int i = 0; i < 6; i++)
+        {
+            if (!src.m_dirty_face[i])
+                continue;
+            dst.m_rtt[i].copy(src.m_rtt[i]);
+            dst.m_dirty_face[i] = src.m_dirty_face[i];
+            dst.m_dirty_box[i] = src.m_dirty_box[i];
+            dst.m_opacity = src.m_opacity;
+            dst.m_blend_mode = src.m_blend_mode;
+            dst.m_alpha_locked = src.m_alpha_locked;
+        }
+        Canvas::I->m_unsaved = true;
+        title_update();
+    };
+
     layers->on_layer_change = [this](Node*, int old_idx, int new_idx) {
         canvas->m_canvas->m_current_layer_idx = canvas->m_canvas->m_order[new_idx];
     };

src/node_panel_layer.cpp

@@ -110,24 +110,33 @@ Node* NodePanelLayer::clone_instantiate() const
 
 void NodePanelLayer::init()
 {
-    LOG("NodePanelLayer::init");
     init_template("tpl-panel-layers");
-    LOG("template initted");
     m_layers_container = find<NodeBorder>("layers-container");
-    LOG("template container found");
-    //         for (int i = 0; i < 1; i++)
-    //         {
-    //             LOG("add layer");
-    //             add_layer();
-    //         }
-    LOG("find components");
-    //         m_current_layer = m_layers[0];
-    //         m_layers[0]->m_selected = true;
     btn_add = find<NodeButtonCustom>("btn-add");
     btn_remove = find<NodeButtonCustom>("btn-remove");
     btn_up = find<NodeButtonCustom>("btn-up");
     btn_down = find<NodeButtonCustom>("btn-down");
-    LOG("attach events");
+    btn_duplicate = find<NodeButtonCustom>("btn-duplicate");
+    btn_duplicate->on_click = [this](Node*) {
+        std::string next = m_current_layer->m_label_text + "01";
+        std::regex r(R"(([^\d]*)(\d+)$)");
+        std::smatch m;
+        if (std::regex_search(m_current_layer->m_label_text, m, r))
+        {
+            auto num = m[2].str();
+            int count = atoi(num.c_str()) + 1;
+            char tmp[128];
+            sprintf(tmp, "%s%0*d", m[1].str().c_str(), num.length(), count);
+            next = tmp;
+        }
+        int source_index = m_layers_container->get_child_index(m_current_layer);
+        add_layer(next.c_str());
+        if (on_layer_duplicate)
+            on_layer_duplicate(this, source_index);
+        if (on_layer_change)
+            on_layer_change(this, -1, m_layers_container->get_child_index(m_current_layer));
+        update_attributes();
+    };
     btn_add->on_click = [this](Node*) {
         add_layer();
         if (on_layer_add)
@@ -171,7 +180,6 @@ void NodePanelLayer::init()
     m_blend_mode->on_select = [this](Node*, int index) {
         handle_layer_blend_mode(m_current_layer, index);
     };
-    LOG("done init");
 }
 
 NodeLayer* NodePanelLayer::add_layer(const char* name)

src/node_panel_layer.h

@@ -36,6 +36,7 @@ class NodePanelLayer : public Node
     NodeButtonCustom* btn_remove;
     NodeButtonCustom* btn_up;
     NodeButtonCustom* btn_down;
+    NodeButtonCustom* btn_duplicate;
     int id_counter = 0;
 public:
     std::function<void(Node* target, int old_idx, int new_idx)> on_layer_change;
@@ -45,6 +46,7 @@ public:
     std::function<void(Node* target, int idx, bool highlight)> on_layer_highlight_changed;
     std::function<void(Node* target, int idx, int mode)> on_layer_blend_mode_changed;
     std::function<void(Node* target, int index)> on_layer_delete;
+    std::function<void(Node* target, int index)> on_layer_duplicate;
     std::function<void(Node* target)> on_layer_add;
     std::function<void(Node* target, int old_idx, int new_idx)> on_layer_order;
     NodeLayer* m_current_layer = nullptr;