hvirtual/plugins/scale/scale.h

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#ifndef SCALE_H
#define SCALE_H

// the simplest plugin possible

class ScaleMain;
class ScaleWidth;
class ScaleHeight;
class ScaleConstrain;
class ScaleThread;
class ScaleWin;

#include "bchash.h"
#include "guicast.h"
#include "mutex.h"
#include "scalewin.h"
#include "overlayframe.h"
#include "pluginvclient.h"

class ScaleConfig
{
public:
        ScaleConfig();

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

        float w, h;
        int constrain;
};


class ScaleWidth : public BC_TumbleTextBox
{
public:
        ScaleWidth(ScaleWin *win, ScaleMain *client, int x, int y);
        ~ScaleWidth();
        int handle_event();

        ScaleMain *client;
        ScaleWin *win;
};

class ScaleHeight : public BC_TumbleTextBox
{
public:
        ScaleHeight(ScaleWin *win, ScaleMain *client, int x, int y);
        ~ScaleHeight();
        int handle_event();

        ScaleMain *client;
        ScaleWin *win;
};

class ScaleConstrain : public BC_CheckBox
{
public:
        ScaleConstrain(ScaleMain *client, int x, int y);
        ~ScaleConstrain();
        int handle_event();

        ScaleMain *client;
};

class ScaleWin : public BC_Window
{
public:
        ScaleWin(ScaleMain *client, int x, int y);
        ~ScaleWin();

        int create_objects();
        int close_event();

        ScaleMain *client;
        ScaleWidth *width;
        ScaleHeight *height;
        ScaleConstrain *constrain;
};

PLUGIN_THREAD_HEADER(ScaleMain, ScaleThread, ScaleWin)

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

// required for all realtime plugins
        int process_buffer(VFrame *frame,
                int64_t start_position,
                double frame_rate);
        void calculate_transfer(VFrame *frame,
                float &in_x1, 
                float &in_x2, 
                float &in_y1, 
                float &in_y2, 
                float &out_x1, 
                float &out_x2, 
                float &out_y1, 
                float &out_y2);
        int handle_opengl();
        int is_realtime();
        char* plugin_title();
        int show_gui();
        void raise_window();
        int set_string();
        void update_gui();
        void save_data(KeyFrame *keyframe);
        void read_data(KeyFrame *keyframe);
        VFrame* new_picon();
        int load_defaults();
        int save_defaults();
        int load_configuration();

// a thread for the GUI
        ScaleThread *thread;

        OverlayFrame *overlayer;   // To scale images
        BC_Hash *defaults;
        ScaleConfig config;
};


#endif

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