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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert, R. Belmont, Couriersud
//============================================================
//
//  osdwindow.h - SDL window handling
//
//============================================================

#ifndef __OSDWINDOW__
#define __OSDWINDOW__

#include "emu.h"
#include "ui/ui.h"

#ifdef OSD_SDL
// standard SDL headers
#include "sdlinc.h"
#endif

//============================================================
//  TYPE DEFINITIONS
//============================================================

class osd_options;
class render_primitive_list;

enum
{
	VIDEO_MODE_NONE = 0,
	VIDEO_MODE_GDI,
	VIDEO_MODE_BGFX,
#if (USE_OPENGL)
	VIDEO_MODE_OPENGL,
#endif
	VIDEO_MODE_SDL2ACCEL,
	VIDEO_MODE_D3D,
	VIDEO_MODE_SOFT,

	VIDEO_MODE_COUNT
};

class osd_dim
{
public:
	osd_dim(const int &w, const int &h)
	: m_w(w), m_h(h)
	{
	}
	int width() const { return m_w; }
	int height() const { return m_h; }

	bool operator!=(const osd_dim &other) { return (m_w != other.width()) || (m_h != other.height()); }
	bool operator==(const osd_dim &other) { return (m_w == other.width()) && (m_h == other.height()); }
private:
	int m_w;
	int m_h;
};

class osd_rect
{
public:
	osd_rect()
	: m_x(0), m_y(0), m_d(0,0)
	{
	}
	osd_rect(const int x, const int y, const int &w, const int &h)
	: m_x(x), m_y(y), m_d(w,h)
	{
	}
	osd_rect(const int x, const int y, const osd_dim &d)
	: m_x(x), m_y(y), m_d(d)
	{
	}
	int top() const { return m_y; }
	int left() const { return m_x; }
	int width() const { return m_d.width(); }
	int height() const { return m_d.height(); }

	osd_dim dim() const { return m_d; }

	int bottom() const { return m_y + m_d.height(); }
	int right() const { return m_x + m_d.width(); }

	osd_rect move_by(int dx, int dy) const { return osd_rect(m_x + dx, m_y + dy, m_d); }
	osd_rect resize(int w, int h) const { return osd_rect(m_x, m_y, w, h); }

private:
	int m_x;
	int m_y;
	osd_dim m_d;
};

class osd_monitor_info
{
public:
	osd_monitor_info(void *handle, const char *monitor_device, float aspect)
	: m_next(NULL), m_handle(handle), m_aspect(aspect)
	{
		strncpy(m_name, monitor_device, ARRAY_LENGTH(m_name) - 1);
	}

	virtual ~osd_monitor_info() { }

	virtual void refresh() = 0;

	const void *oshandle() { return m_handle; }

	const osd_rect &position_size() { return m_pos_size; }
	const osd_rect &usuable_position_size() { return m_usuable_pos_size; }

	const char *devicename() { return m_name[0] ? m_name : "UNKNOWN"; }

	float aspect();

	void set_aspect(const float a) { m_aspect = a; }
	bool is_primary() { return m_is_primary; }

	osd_monitor_info    * next() { return m_next; }   // pointer to next monitor in list

	static osd_monitor_info *pick_monitor(osd_options &options, int index);
	static osd_monitor_info *list;

	// FIXME: should be private!
	osd_monitor_info    *m_next;                   // pointer to next monitor in list
protected:
	osd_rect            m_pos_size;
	osd_rect            m_usuable_pos_size;
	bool                m_is_primary;
	char                m_name[64];
private:

	void *              m_handle;                 // handle to the monitor
	float               m_aspect;                 // computed/configured aspect ratio of the physical device
};

class osd_window_config
{
public:
	osd_window_config() : aspect(0.0f), width(0), height(0), depth(0), refresh(0) {}

	float               aspect;                     // decoded aspect ratio FIXME: not used on windows
	int                 width;                      // decoded width
	int                 height;                     // decoded height
	int                 depth;                      // decoded depth - only SDL
	int                 refresh;                    // decoded refresh
};

class osd_window
{
public:
	osd_window()
	:
#ifndef OSD_SDL
		m_hwnd(0), m_dc(0), m_focus_hwnd(0), m_resize_state(0),
#endif
		m_primlist(nullptr),
		m_index(0),
		m_main(nullptr),
		m_prescale(1)
		{}
	virtual ~osd_window() { }

	virtual render_target *target() = 0;
	virtual int fullscreen() const = 0;
	virtual running_machine &machine() const = 0;

	int prescale() const { return m_prescale; };

	float aspect() const { return monitor()->aspect(); }

	virtual osd_dim get_size() = 0;

#ifdef OSD_SDL
	virtual osd_dim blit_surface_size() = 0;
	virtual osd_monitor_info *monitor() const = 0;
	virtual SDL_Window *sdl_window() = 0;
#else
	virtual osd_monitor_info *monitor() const = 0;
	virtual bool win_has_menu() = 0;
	// FIXME: cann we replace winwindow_video_window_monitor(NULL) with monitor() ?
	virtual osd_monitor_info *winwindow_video_window_monitor(const osd_rect *proposed) = 0;

	// window handle and info
	HWND                    m_hwnd;
	HDC                     m_dc;       // only used by GDI renderer!
	// FIXME: this is the same as win_window_list->m_hwnd, i.e. first window.
	// During modularization, this should be passed in differently
	HWND                    m_focus_hwnd;

	int                     m_resize_state;
#endif

	render_primitive_list   *m_primlist;
	osd_window_config       m_win_config;
	int						m_index;
	osd_window				*m_main;
protected:
	int                     m_prescale;
};

class osd_renderer
{
public:

	/* Generic flags */
	static const int FLAG_NONE                  = 0x0000;
	static const int FLAG_NEEDS_OPENGL          = 0x0001;
	static const int FLAG_HAS_VECTOR_SCREEN     = 0x0002;

	/* SDL 1.2 flags */
	static const int FLAG_NEEDS_DOUBLEBUF       = 0x0100;
	static const int FLAG_NEEDS_ASYNCBLIT       = 0x0200;

	osd_renderer(osd_window *window, const int flags)
	: m_sliders_dirty(false), m_window(window), m_flags(flags) { }

	virtual ~osd_renderer() { }

	osd_window &window() { return *m_window; }
	bool has_flags(const int flag) { return ((m_flags & flag)) == flag; }
	void set_flags(int aflag) { m_flags |= aflag; }
	void clear_flags(int aflag) { m_flags &= ~aflag; }

	void notify_changed() { set_flags(FI_CHANGED); }

	/* Interface to be implemented by render code */

	virtual int create() = 0;
	virtual render_primitive_list *get_primitives() = 0;

	virtual slider_state* get_slider_list() { return nullptr; }
	virtual int draw(const int update) = 0;
	virtual int xy_to_render_target(const int x, const int y, int *xt, int *yt) { return 0; };
	virtual void save() { };
	virtual void record() { };
	virtual void toggle_fsfx() { };
	virtual bool sliders_dirty() { return m_sliders_dirty; }

	static osd_renderer* make_for_type(int mode, osd_window *window, int extra_flags = FLAG_NONE);

protected:
	/* Internal flags */
	static const int FI_CHANGED                 = 0x010000;
	bool		m_sliders_dirty;

private:
	osd_window	*m_window;
	int			m_flags;
};


#endif /* __OSDWINDOW__ */