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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/>.
////////////////////////////////////////////////////////////////////////////////
#ifndef GRAPHCOLORING_GUI_WINDOW_H_
#define GRAPHCOLORING_GUI_WINDOW_H_
#include <cstdint>
#include <functional>
#include <vector>
#include <map>
#include <gtk/gtk.h>
#include "colors.hpp"
#include "position.hpp"
namespace gui {
class Window
{
public:
typedef std::function<void(Window*)> callback_t; // General 0-parameter callbacks.
typedef std::map<guint, std::vector<callback_t>> callback_map_t;
typedef std::function<void(Window*,int,int)> mouse_callback_t; // Mouse callbacks take x and y coordinates.
typedef std::map<guint, std::vector<mouse_callback_t>> mouse_callback_map_t;
typedef std::function<void(Window*,GdkScrollDirection)> scroll_callback_t;
Window(const char* title, int width, int height, int fps = 30);
virtual ~Window();
// window_main.cpp methods
int GetWidth() const;
int GetHeight() const;
Position GetPosition(int x = 0,int y = 0, double xrel = 0, double yrel = 0);
const Size* GetSizePtr() const;
void RemoveAllCallbacks();
void OnActivate(std::function<void()> callback);
void Quit();
void Mainloop(); // Start application.
// window_rendering.cpp methods
int SetRenderCallback(callback_t callback);
void RemoveRenderCallback(int id);
void SetDrawColor(uint8_t r, uint8_t g, uint8_t b, uint8_t a);
void SetDrawColor(Color color); // Sets color to value. Format: 0xRRGGBBAA.
void SetLineWidth(int line_width);
void Clear();
void DrawRectangle(int x, int y, int w, int h, bool filled = true);
void DrawPoint(int x, int y);
void DrawLine(int x1, int y1, int x2, int y2);
void DrawArc(int x, int y, int r, double startAngle, double endAngle,
bool filled = true);
void DrawCircle(int x, int y, int r, bool filled = true);
void DrawPolygon(std::vector<std::pair<int,int>> points, bool filled=true);
void SetTextSize(int size);
void DrawText(const std::string& text, int x, int y);
void DrawText(const std::string& text, Position pos,
Alignment horizontal_align = Alignment::LEFT,
Alignment vertical_align = Alignment::TOP);
void DrawImage(const std::string& filename, int x, int y);
void DrawImage(const std::string& filename, Position pos,
Alignment horizontal_align = Alignment::LEFT,
Alignment vertical_align = Alignment::TOP);
void GetImageSize(const std::string& filename, int* w, int* h);
void GetTextSize(const std::string& text, int* w, int* h);
// window_events_keyboard.cpp methods
int SetKeydownCallback(callback_t callback, guint key);
void RemoveKeydownCallback(int id, guint key);
int SetKeyupCallback(callback_t callback, guint key);
void RemoveKeyupCallback(int id, guint key);
bool IsKeyDown(guint key) const;
bool IsControlDown() const;
// window_events_mouse.cpp
int SetMousedownCallback(mouse_callback_t callback,
guint button = GDK_BUTTON_PRIMARY);
void RemoveMousedownCallback(int id, guint button = GDK_BUTTON_PRIMARY);
int SetMouseupCallback(mouse_callback_t callback,
guint button = GDK_BUTTON_PRIMARY);
void RemoveMouseupCallback(int id, guint button = GDK_BUTTON_PRIMARY);
int SetMousemotionCallback(mouse_callback_t callback);
void RemoveMousemotionCallback(int id);
int SetScrollCallback(scroll_callback_t callback);
void RemoveScrollCallback(int id);
bool IsMouseDown(guint button = GDK_BUTTON_PRIMARY) const;
int GetMouseX() const;
int GetMouseY() const;
private:
// window_main.cpp methods
void InitializeWindow();
void InitializeApplication(const char* title);
friend void Activate(GtkApplication*, gpointer);
// window_events.cpp methods
void InitializeEvents();
template<typename F>
static int AddToCallbackMap(std::map<guint,std::vector<F>>& callback_map,
guint id, F callback);
template<typename F>
static std::vector<F> CheckCallbackMap(
std::map<guint,std::vector<F>>& callback_map, guint id);
template<typename F>
static void RemoveFromCallbackList(
std::vector<F>& callback_list, int id);
friend void GtkKeydownCallback(GtkWidget*, GdkEventKey*, gpointer);
void ProcessKeydown(GdkEventKey* event);
friend void GtkKeyupCallback(GtkWidget*, GdkEventKey*, gpointer);
void ProcessKeyup(GdkEventKey* event);
friend void GtkMousedownCallback(GtkWidget*, GdkEventButton*, gpointer);
void ProcessMousedown(GdkEventButton* event);
friend void GtkMouseupCallback(GtkWidget*, GdkEventButton*, gpointer);
void ProcessMouseup(GdkEventButton* event);
friend void GtkMousemotionCallback(GtkWidget*, GdkEventMotion*, gpointer);
void ProcessMousemotion(GdkEventMotion* event);
friend void GtkScrollCallback(GtkWidget*, GdkEventScroll*, gpointer);
void ProcessScroll(GdkEventScroll* event);
// window_rendering.cpp methods
friend void GtkDrawCallback(GtkWidget*, cairo_t*, gpointer);
void InitializeDrawingArea();
void Render();
cairo_surface_t* GetSurface(const std::string& filename);
// window_main.cpp members
Size size;
const char* title;
const int FPS;
GtkApplication* application;
GtkWidget* window;
std::function<void()> on_activate;
// window_rendering.cpp members
cairo_t* cr;
cairo_font_face_t* font;
std::map<std::string, cairo_surface_t*> images; // Only load each image once.
std::vector<callback_t> render_callbacks;
bool is_render_callbacks_modified;
// window_events.cpp members
mouse_callback_map_t mousedown_callbacks;
bool is_mousedown_callbacks_modified;
mouse_callback_map_t mouseup_callbacks;
bool is_mouseup_callbacks_modified;
std::vector<mouse_callback_t> mousemotion_callbacks;
bool is_mousemotion_callbacks_modified;
std::vector<scroll_callback_t> scroll_callbacks;
bool is_scroll_callbacks_modified;
callback_map_t keyup_callbacks;
bool is_keyup_callbacks_modified;
callback_map_t keydown_callbacks;
bool is_keydown_callbacks_modified;
std::map<guint, bool> keymap; // Which keys are down?
std::map<guint, bool> mousemap; // Which mouse buttons are down?
int mouse_x, mouse_y;
};
} // namespace gui
#endif // GRAPHCOLORING_GUI_WINDOW_H_
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