Initial commit0.0.0

1 files changed, 191 insertions, 0 deletions

diff --git a/src/gui/button.cpp b/src/gui/button.cpp
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--- /dev/null
+++ b/src/gui/button.cpp
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+////////////////////////////////////////////////////////////////////////////////
+// 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 "button.hpp"
+
+#include <iostream>
+
+#include "utils/geometry.hpp"
+
+namespace gui {
+
+const std::vector<guint> Button::MOUSE_BUTTONS = {
+	GDK_BUTTON_PRIMARY, GDK_BUTTON_MIDDLE, GDK_BUTTON_SECONDARY};
+
+Button::Button(Window* window_, const std::string& text_,
+	Position position_, Size size_, Color color_,
+	Position::Alignment horizontal_align_, Position::Alignment vertical_align_,
+	Shape shape_)
+	: window(window_),
+	  text(text_),
+	  position(position_),
+	  size(size_),
+	  color(color_),
+	  horizontal_align(horizontal_align_),
+	  vertical_align(vertical_align_),
+	  shape(shape_),
+	  hovering(false)
+{
+	// Given a mouse button, this lambda gives the appropriate
+	// mouse_callback_t (which will call CheckClick with the button).
+	std::function<Window::mouse_callback_t(guint)> callback =
+		[this](guint button)->Window::mouse_callback_t {
+			return [this,button](Window*,int,int) {
+				CheckClick(button);
+			};
+		};
+
+
+
+	for (guint button : MOUSE_BUTTONS)
+	{
+		// Initialize callbacks.
+		callbacks[button] = std::vector<callback_t>();
+		int callback_id = window->SetMouseupCallback(callback(button), button);
+		mouseup_callback_ids.push_back(callback_id);
+	}
+}
+
+Button::~Button()
+{
+	int i;
+	for (i = 0; i < (int)MOUSE_BUTTONS.size(); i++)
+		window->RemoveMouseupCallback(mouseup_callback_ids[i],MOUSE_BUTTONS[i]);
+}
+
+
+
+void Button::CheckHovering()
+{
+	int mx = window->GetMouseX(), my = window->GetMouseY();
+	hovering = shape == Shape::RECTANGLE
+		? utils::geometry::InRectangle(mx, my, GetX(), GetY(),
+			GetWidth(), GetHeight())
+		: utils::geometry::InCircle(mx, my,
+			GetX()+GetRadius(), GetY()+GetRadius(), GetRadius());
+	if (hovering)
+		for (callback_t callback : hover_callbacks)
+			callback();
+}
+
+void Button::CheckClick(guint button)
+{
+	CheckHovering();
+	if (hovering)
+	{
+		for (callback_t callback : callbacks[button])
+		{
+			callback();
+		}
+	}
+}
+
+void Button::Render()
+{
+	CheckHovering();
+	window->SetLineWidth(BORDER_WIDTH);
+	window->SetDrawColor(colors::Shade(color, 0.3));
+	if (shape == Shape::CIRCLE)
+		window->SetTextSize(GetRadius()*CIRCLE_TEXT_SIZE_FACTOR);
+	else
+		window->SetTextSize(GetHeight()*TEXT_SIZE_FACTOR);
+
+	if (hovering)
+	{
+		switch (shape)
+		{
+		case Shape::RECTANGLE:
+			window->DrawRectangle(GetX()+BORDER_WIDTH/2, GetY()+BORDER_WIDTH/2,
+				GetWidth()-BORDER_WIDTH, GetHeight()-BORDER_WIDTH, true);
+			break;
+		case Shape::CIRCLE:
+			window->DrawCircle(GetX()+GetRadius(), GetY()+GetRadius(),
+				GetRadius()-BORDER_WIDTH);
+			break;
+		}
+	}
+
+	window->SetDrawColor(color);
+	switch (shape)
+	{
+	case Shape::RECTANGLE:
+		window->DrawRectangle(GetX(), GetY(), GetWidth(), GetHeight(), false);
+		break;
+	case Shape::CIRCLE:
+		window->DrawCircle(GetX()+GetRadius(), GetY()+GetRadius(), GetRadius(),
+			false);
+		break;
+	}
+
+	int text_x = 0, text_y = 0;
+	switch (shape)
+	{
+	case Shape::RECTANGLE:
+		{
+			Position text_pos(GetX(), GetY(), 0.5, 0.5, &size);
+			text_x = text_pos.X();
+			text_y = text_pos.Y();
+		}
+		break;
+	case Shape::CIRCLE:
+		text_x = GetX() + GetRadius();
+		text_y = GetY() + GetRadius();
+		break;
+	}
+
+	Position text_pos(text_x, text_y);
+	window->DrawText(text, text_pos, Alignment::CENTER, Alignment::CENTER);
+}
+
+void Button::SetCommand(callback_t callback, guint button)
+{
+	callbacks[button].push_back(callback);
+}
+
+void Button::SetHoverCallback(callback_t callback)
+{
+	hover_callbacks.push_back(callback);
+}
+
+int Button::GetWidth()  const { return size.X();  }
+int Button::GetHeight() const { return size.Y(); }
+int Button::GetRadius() const { return size.X(); }
+
+int Button::GetX() const
+{
+	return position.AlignedX(horizontal_align, GetWidth());
+}
+
+int Button::GetY() const
+{
+	return position.AlignedY(vertical_align, GetHeight());
+}
+
+void Button::SetPosition(Position position_)
+{
+	position = position_;
+}
+
+void Button::SetAlignment(Alignment horizontal_align_,Alignment vertical_align_)
+{
+	horizontal_align = horizontal_align_;
+	vertical_align   = vertical_align_;
+}
+
+
+} // namespace gui