pool mgr: add unit preview

Makefile

@@ -401,6 +401,7 @@ SRC_POOL_MGR = \
 	widgets/entity_preview.cpp\
 	widgets/preview_canvas.cpp\
 	widgets/preview_base.cpp\
+	widgets/unit_preview.cpp\
 
 SRC_PGM_TEST = \
 	pgm-test.cpp

pool-mgr/pool_notebook.cpp

@@ -23,6 +23,7 @@
 #include "pool-mgr-app.hpp"
 #include "widgets/part_preview.hpp"
 #include "widgets/entity_preview.hpp"
+#include "widgets/unit_preview.hpp"
 #include "widgets/preview_canvas.hpp"
 #include <thread>
 
@@ -272,9 +273,25 @@ namespace horizon {
 			sep->show();
 			box->pack_start(*sep, false, false, 0);
 			box->pack_start(*br, true, true, 0);
-			box->show();
 
-			append_page(*box, "Units");
+			auto paned = Gtk::manage(new Gtk::Paned(Gtk::ORIENTATION_HORIZONTAL));
+			paned->add1(*box);
+
+			auto preview = Gtk::manage(new UnitPreview(pool));
+			preview->signal_goto().connect(sigc::mem_fun(this, &PoolNotebook::go_to));
+			br->signal_selected().connect([this, br, preview]{
+				auto sel = br->get_selected();
+				if(!sel) {
+					preview->load(nullptr);
+					return;
+				}
+				auto unit = pool.get_unit(sel);
+				preview->load(unit);
+			});
+			paned->add2(*preview);
+			paned->show_all();
+
+			append_page(*paned, "Units");
 		}
 		{
 			auto br = Gtk::manage(new PoolBrowserSymbol(&pool));

widgets/unit_preview.cpp

@@ -0,0 +1,78 @@
+#include "unit_preview.hpp"
+#include "pool/unit.hpp"
+#include "pool/pool.hpp"
+#include "canvas/canvas.hpp"
+#include "util/util.hpp"
+#include "util/sqlite.hpp"
+#include "object_descr.hpp"
+#include "preview_canvas.hpp"
+
+namespace horizon {
+	UnitPreview::UnitPreview(class Pool &p): Gtk::Box(Gtk::ORIENTATION_VERTICAL, 0), pool(p) {
+
+		auto symbol_sel_box = Gtk::manage(new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL, 4));
+		symbol_sel_box->property_margin() = 8;
+		{
+			auto la = Gtk::manage(new Gtk::Label("Symbol"));
+			la->get_style_context()->add_class("dim-label");
+			symbol_sel_box->pack_start(*la, false, false, 0);
+		}
+		combo_symbol = Gtk::manage(new Gtk::ComboBoxText);
+		combo_symbol->signal_changed().connect(sigc::mem_fun(this, &UnitPreview::handle_symbol_sel));
+		symbol_sel_box->pack_start(*combo_symbol, true, true, 0);
+
+		{
+			auto bu = create_goto_button(ObjectType::SYMBOL, [this] {
+				return UUID(combo_symbol->get_active_id());
+			});
+			symbol_sel_box->pack_start(*bu, false, false, 0);
+		}
+
+		pack_start(*symbol_sel_box, false, false, 0);
+
+		{
+			auto sep = Gtk::manage(new Gtk::Separator(Gtk::ORIENTATION_HORIZONTAL));
+			sep->show();
+			pack_start(*sep, false, false, 0);
+		}
+
+		canvas_symbol = Gtk::manage(new PreviewCanvas(pool));
+		canvas_symbol->show();
+		pack_start(*canvas_symbol, true, true, 0);
+
+
+		load(nullptr);
+	}
+
+	void UnitPreview::load(const Unit *u) {
+		unit = u;
+
+		for(auto it: goto_buttons) {
+			it->set_sensitive(unit);
+		}
+		combo_symbol->remove_all();
+		if(!unit) {
+			return;
+		}
+
+		SQLite::Query q(pool.db, "SELECT uuid, name FROM symbols WHERE unit=? ORDER BY name");
+		q.bind(1, unit->uuid);
+		while(q.step()) {
+			UUID uu = q.get<std::string>(0);
+			std::string name = q.get<std::string>(1);
+			combo_symbol->append((std::string)uu, name);
+		}
+		combo_symbol->set_active(0);
+	}
+
+	void UnitPreview::handle_symbol_sel() {
+		canvas_symbol->clear();
+		if(!unit)
+			return;
+		if(combo_symbol->get_active_row_number() == -1)
+			return;
+
+		canvas_symbol->load(ObjectType::SYMBOL, UUID(combo_symbol->get_active_id()));
+	}
+
+}

widgets/unit_preview.hpp

@@ -0,0 +1,23 @@
+#pragma once
+#include <gtkmm.h>
+#include <set>
+#include "common.hpp"
+#include "uuid.hpp"
+#include "preview_base.hpp"
+
+namespace horizon {
+	class UnitPreview: public Gtk::Box, public PreviewBase {
+		public:
+			UnitPreview(class Pool &pool);
+
+			void load(const class Unit *unit);
+
+		private:
+			class Pool &pool;
+			const class Unit *unit = nullptr;
+			class PreviewCanvas *canvas_symbol = nullptr;
+			Gtk::ComboBoxText *combo_symbol = nullptr;
+
+			void handle_symbol_sel();
+	};
+}