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Diffstat (limited to 'src/gui/button.cpp')
| -rw-r--r-- | src/gui/button.cpp | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/src/gui/button.cpp b/src/gui/button.cpp new file mode 100644 index 0000000..daa224f --- /dev/null +++ b/src/gui/button.cpp @@ -0,0 +1,191 @@ +//////////////////////////////////////////////////////////////////////////////// +// 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 |