#pragma once
#include <list>
#include "gui.h"

class FontFace;

namespace Gui {
  class Screen {
  public:
    static void Init(int real_width, int real_height, int ui_width, int ui_height);
    static void Draw(void);
    static void AddBaseWidget(Widget* w, int x, int y);
    static void RemoveBaseWidget(Widget* w);
    static void OnMouseMotion(SDL_MouseMotionEvent* e);
    static void OnClick(SDL_MouseButtonEvent* e);
    static void OnKeyDown(const SDL_keysym* sym);
    static void RenderString(const std::string& s);
    static void MeasureString(const std::string& s, float& w, float& h);
    static void RenderMarkup(const std::string& s);
    static void PutClickableLabel(const std::string& s, float x, float y,
                                  sigc::slot<void, const Gui::MouseButtonEvent*> slot);
    static void RenderLabel(const std::string& s, float x, float y);
    static void EnterOrtho(void);
    static void LeaveOrtho(void);
    static int GetWidth(void)   { return width; }
    static int GetHeight(void)  { return height; }
    /* gluProject but fixes UI/screen size mismatch. */
    static GLint Project(GLdouble objX, GLdouble objY, GLdouble objZ, const GLdouble* model,
                         const GLdouble* proj, const GLint* view, GLdouble* winX,
                         GLdouble* winY, GLdouble* winZ);
    friend void Widget::SetShortcut(SDLKey key, SDLMod mod);
  private:
    struct LabelPos {
      LabelPos(float _x, float _y) : x(_x), y(_y) {}
      float x, y;
      sigc::signal<void, const Gui::MouseButtonEvent*> onClick;
    };
    static std::vector<LabelPos> labelPositions;
    static void OnClickTestLabels(const Gui::MouseButtonEvent& ev);
    static bool CanPutLabel(float x, float y);
    static void AddShortcutWidget(Widget* w);
    static void SDLEventCoordToScreenCoord(int sdlev_x, int sdlev_y, float* x, float* y);

    static bool init;
    static int width, height;
    static int realWidth, realHeight;
    static float invRealWidth, invRealHeight;
    static std::list<Widget*> kbshortcut_widgets;
    static std::list<Widget*> mouseHoveredWidgets;
    static FontFace* font;
    static float font_xsize;
    static float font_ysize;
    static Gui::Fixed* baseContainer;
  };
}