1 files changed, 74 insertions, 0 deletions
diff --git a/src/gui/menu.cpp b/src/gui/menu.cpp
new file mode 100644
index 0000000..18bacb2
--- /dev/null
+++ b/src/gui/menu.cpp
@@ -0,0 +1,74 @@
+////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2018 Leo Tenenbaum
+// This file is part of GraphColoring.
+//
+// GraphColoring is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// GraphColoring 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
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with GraphColoring.  If not, see <https://www.gnu.org/licenses/>.
+////////////////////////////////////////////////////////////////////////////////
+
+#include "menu.hpp"
+
+#include <iostream>
+
+namespace gui {
+
+Menu::Menu(Window* window,
+	const std::vector<std::shared_ptr<Button>>& buttons_,
+	Position position_, Size size_)
+	: window(window), buttons(buttons_), position(position_), size(size_)
+{
+	int total_button_height = 0;
+	for (std::shared_ptr<Button>& button : buttons)
+	{
+		total_button_height += button->GetHeight();
+	}
+
+	int number_of_buttons = buttons.size();
+	double spacing_rel = 1.0 / (number_of_buttons + 1);
+	double spacing_abs = (-total_button_height) / (number_of_buttons + 1);
+	if (spacing_rel * size.Y() + spacing_abs < 0) // Window is very short; just give up.
+	{
+		spacing_rel = 0;
+		spacing_abs = 0;
+	}
+	double y_abs = spacing_abs;
+	double y_rel = spacing_rel;
+
+	for (std::shared_ptr<Button>& button : buttons)
+	{
+		button->SetPosition(Position(0, y_abs, 0.5, y_rel, &size, &position));
+		button->SetAlignment(Alignment::CENTER, Alignment::TOP);
+		y_abs += spacing_abs + button->GetHeight();
+		y_rel += spacing_rel;
+	}
+}
+
+void Menu::SetCommand(int button, Button::callback_t command)
+{
+	buttons[button]->SetCommand(command);
+}
+
+void Menu::SetCommands(std::vector<Button::callback_t> commands)
+{
+	for (unsigned i = 0; i < buttons.size(); i++)
+		SetCommand((int)i, commands[i]);
+}
+
+
+void Menu::Render()
+{
+	for (std::shared_ptr<Button>& button : buttons)
+		button->Render();
+}
+
+} // namespace gui