/*
 * CINELERRA
 * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
 *
 * This program 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 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include <math.h>
#include <stdint.h>
#include <string.h>

#include "affine.inc"
#include "clip.h"
#include "bchash.h"
#include "filexml.h"
#include "guicast.h"
#include "keyframe.h"
#include "loadbalance.h"
#include "pluginvclient.h"
#include "vframe.h"


class PerspectiveConfig;
class PerspectiveCanvas;
class PerspectiveCoord;
class PerspectiveReset;
class PerspectiveMode;
class PerspectiveDirection;
class PerspectiveAffine;
class PerspectiveAffineItem;
class PerspectiveZoomView;
class PerspectiveWindow;
class PerspectiveMain;

class PerspectiveConfig
{
public:
	PerspectiveConfig();

	int equivalent(PerspectiveConfig &that);
	void copy_from(PerspectiveConfig &that);
	void interpolate(PerspectiveConfig &prev, PerspectiveConfig &next,
		int64_t prev_frame, int64_t next_frame, int64_t current_frame);

	float x1, y1, x2, y2, x3, y3, x4, y4;
	float view_x, view_y, view_zoom;
	int mode, smoothing;
	int window_w, window_h;
	int current_point;
	int forward;
};



class PerspectiveCanvas : public BC_SubWindow
{
public:
	PerspectiveCanvas(PerspectiveWindow *gui,
		int x, int y, int w, int h);
	int button_press_event();
	int button_release_event();
	int cursor_motion_event();

	int state;
	enum { NONE, DRAG, DRAG_FULL, ZOOM, DRAG_VIEW };

	int start_x, start_y;
	float start_x1, start_y1;
	float start_x2, start_y2;
	float start_x3, start_y3;
	float start_x4, start_y4;
	PerspectiveWindow *gui;
};

class PerspectiveCoord : public BC_TumbleTextBox
{
public:
	PerspectiveCoord(PerspectiveWindow *gui,
		int x, int y, float value, int is_x);
	int handle_event();
	PerspectiveWindow *gui;
	int is_x;
};

class PerspectiveReset : public BC_GenericButton
{
public:
	PerspectiveReset(PerspectiveWindow *gui, int x, int y);
	int handle_event();
	PerspectiveWindow *gui;
};

class PerspectiveMode : public BC_Radial
{
public:
	PerspectiveMode(PerspectiveWindow *gui,
		int x, int y, int value, char *text);
	int handle_event();
	PerspectiveWindow *gui;
	int value;
};

class PerspectiveDirection : public BC_Radial
{
public:
	PerspectiveDirection(PerspectiveWindow *gui,
		int x, int y, int value, char *text);
	int handle_event();
	PerspectiveWindow *gui;
	int value;
};

class PerspectiveAffine : public BC_PopupMenu
{
	static const int n_modes = AffineEngine::AF_MODES;
	const char *affine_modes[n_modes];
	PerspectiveAffineItem *affine_items[n_modes];
public:
	PerspectiveAffine(PerspectiveWindow *gui, int x, int y);
	~PerspectiveAffine();

	void create_objects();
	void update(int mode, int send=1);
	void affine_item(int id);

	PerspectiveWindow *gui;
	int mode;
};

class PerspectiveAffineItem : public BC_MenuItem
{
public:
	PerspectiveAffineItem(const char *txt, int id)
	: BC_MenuItem(txt) { this->id = id; }

	int handle_event();
	PerspectiveWindow *gui;
	int id;
};

class PerspectiveZoomView : public BC_FSlider
{
public:
	PerspectiveZoomView(PerspectiveWindow *gui,
		int x, int y, int w);
	~PerspectiveZoomView();

	int handle_event();
	char *get_caption();
	void update(float zoom);

	PerspectiveWindow *gui;
};


class PerspectiveWindow : public PluginClientWindow
{
public:
	PerspectiveWindow(PerspectiveMain *plugin);
	~PerspectiveWindow();

	void create_objects();
	int resize_event(int x, int y);
	void update_canvas();
	void update_mode();
	void update_view_zoom();
	void reset_view();
	void update_coord();
	void calculate_canvas_coords(
		int &x1, int &y1, int &x2, int &y2,
		int &x3, int &y3, int &x4, int &y4);

	PerspectiveCanvas *canvas;
	PerspectiveCoord *x, *y;
	PerspectiveReset *reset;
	PerspectiveZoomView *zoom_view;
	PerspectiveMode *mode_perspective, *mode_sheer, *mode_stretch;
	PerspectiveAffine *affine;
	PerspectiveMain *plugin;
	PerspectiveDirection *forward, *reverse;
};


class PerspectiveMain : public PluginVClient
{
public:
	PerspectiveMain(PluginServer *server);
	~PerspectiveMain();

	int process_buffer(VFrame *frame,
		int64_t start_position,
		double frame_rate);
	int is_realtime();
	void save_data(KeyFrame *keyframe);
	void read_data(KeyFrame *keyframe);
	void update_gui();
	int handle_opengl();

	PLUGIN_CLASS_MEMBERS(PerspectiveConfig)

	float get_current_x();
	float get_current_y();
	void set_current_x(float value);
	void set_current_y(float value);
	VFrame *input, *output;
	VFrame *temp;
	AffineEngine *engine;
};