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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
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