#ifndef __KRY_WAVEFORM_H__
#define __KRY_WAVEFORM_H__

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */


#define KRY_WAVEFORM(obj)          GTK_CHECK_CAST (obj, kry_waveform_get_type (), KryWaveform)
#define KRY_WAVEFORM_CLASS(klass)  GTK_CHECK_CLASS_CAST (klass, kry_waveform_get_type (), KryWaveformClass)
#define KRY_IS_WAVEFORM(obj)       GTK_CHECK_TYPE (obj, kry_waveform_get_type ())


typedef struct _KryWaveform        KryWaveform;
typedef struct _KryWaveformClass   KryWaveformClass;

/**** WARNING: IF THIS ENUM IS CHANGED, THE COLORS STRUCTURE IN THE CPP FILE MUST BE CHANGED AS WELL ****/

enum waveform_colors 
{
  WAVEFORM_COLOR_LINE, 
  WAVEFORM_COLOR_MARKER_START,
  WAVEFORM_COLOR_MARKER_CURRENT,
  WAVEFORM_COLOR_MARKER_END,
  WAVEFORM_COLOR_MARKER_KEYFRAME,
  WAVEFORM_COLOR_MARKER_TIME,
  WAVEFORM_COLOR_BACKGROUND,
  WAVEFORM_COLOR_TEXT,
  WAVEFORM_COLOR_LINE_HIGHLIGHT,
  WAVEFORM_COLOR_MARKER_KARAOKE,
  WAVEFORM_COLOR_SELECTION_HIGHLIGHT,
  WAVEFORM_COLOR_SILENCE_HIGHLIGHT,
  WAVEFORM_COLOR_SCRUB_BAR_SLIDER,
  WAVEFORM_COLOR_SCRUB_BAR_EXTENSION,
  WAVEFORM_COLOR_SCRUB_BAR_SEPARATOR,
  WAVEFORM_COLOR_COUNT,
};

enum KryWaveformMarkerCornerType
{
  MARKER_CORNER_NONE,
  MARKER_CORNER_START,
  MARKER_CORNER_END
};

struct KryWaveformMarkerInfo
{
  KryMarker *marker;
  int pos_rel_pixel;
  int colorid;
  gboolean draw;

  KryWaveformMarkerCornerType corner_type;
};

struct KryWaveformDataInfo
{
  char *waveform_data;
  int length_seconds;
  unsigned char max_neg;
  unsigned char max_pos;
  int vals_per_sec;
};

struct KryWaveformKeyframeList
{
  long *list;
  int count;
};

struct _KryWaveform
{
  GtkWidget item;

  KryWaveformDataInfo *data_info;

  gboolean show_scrub_bar;
  gboolean show_time_bar;
  gboolean show_time_markers;
  gboolean show_keyframe;

  long left_previous;
  long left;  //left offset of waveform, unit is 'values'
  
  KryWaveformKeyframeList *keyframe_list;

  long *keyframes_rel;
  int keyframes_rel_count;

  GtkAdjustment *adjustment;

  gboolean button_press;
#ifdef _WINDOWS
  HDC dc;
  HDC backbuffer_waveonly;
  HDC backbuffer_final;
  HBITMAP bitmap_backbuffer_waveonly;
  HBITMAP bitmap_backbuffer_final;
  HCURSOR cursor_normal;
  HCURSOR cursor_drag;
#else
  PangoLayout *layout;
  GdkPixmap *backbuffer_waveonly;
  GdkPixmap *backbuffer_final;
  GdkCursor *cursor_drag;
#endif

  int marker_width;
  int corner_width;

  double min_zoom;
  double zoom;
  // how many data points are counted in one pixel
  double data_per_pixel;
  double scale;

  GThread *data_thread;
  GMutex *data_thread_mutex;
  GMutex *data_thread_mutex_global;
  gboolean data_thread_quit;
  char *data_pixel;
  int data_pixel_length;
  char *data_time;
  
#ifdef _WINDOWS
//  HPEN colors[WAVEFORM_COLOR_COUNT];
  HBRUSH black_brush;
  HFONT font;
#else
  GdkColor colors[WAVEFORM_COLOR_COUNT];
  GdkGC *gc;
#endif

  GList *markers;

  KryRegionFixedList *region_fixed_list;
  pavl_traverser region_fixed_list_iter;
  GList *region_list;

  // marker affected by left/right click
  KryMarker *marker_active_start;
  KryMarker *marker_active_end;

  KryMarker *marker_autoscroll;

  // marker being dragged
  KryMarker *marker_dragging;
  gboolean drag_select;

  kryColorTable *color_table;

  int signal_color_change;

  gboolean draw_disabled;
  gboolean drag_selection_enabled;
  gboolean drag_markers_enabled;

  int scrub_bar_height;
  int scrub_bar_height_real;

  int scrub_bar_left_ext;
  int scrub_bar_right_ext;
  int scrub_bar_left;
  int scrub_bar_width;

  gboolean is_scrub_bar_dragging;
  int scrub_bar_drag_offset;

  int time_bar_height;
  int time_bar_height_real;
  int wave_height;

  GdkRectangle last_draw_rect;

  //GMutex *mutex_markers;
};

struct _KryWaveformClass
{
  GtkWidgetClass parent_class;

  void (*zoom_changed) (KryWaveform *waveform, double zoom);
  void (*min_zoom_changed) (KryWaveform *waveform, double zoom);
  void (*scale_changed) (KryWaveform *waveform, int scale);
};

GtkWidget *kry_waveform_new(KryWaveformDataInfo *info, GtkAdjustment *adjustment, kryColorTable *color_table);
GtkType kry_waveform_get_type(void);
GtkAdjustment* kry_waveform_get_adjustment(KryWaveform *waveform);
void kry_waveform_set_update_policy(KryWaveform *waveform, GtkUpdateType  policy);

int kry_waveform_rel_pixel_from_mili(KryWaveform *waveform, long time);
int kry_waveform_mili_from_rel_pixel(KryWaveform *waveform, int pos);
int kry_waveform_abs_pixel_from_rel(KryWaveform *waveform, int pixel);

struct sound_info *kry_waveform_get_sound_info(KryWaveform *widget);
void kry_waveform_set_current_marker(KryWaveform *widget, long value);
double kry_waveform_get_zoom_min(KryWaveform *waveform);
double kry_waveform_get_zoom_max(KryWaveform *waveform);
double kry_waveform_get_zoom(KryWaveform *waveform);
void kry_waveform_set_zoom(KryWaveform *waveform, double factor);
void kry_waveform_focus_selected(KryWaveform *waveform);
gboolean kry_waveform_get_show_time_bar(KryWaveform *waveform);
gboolean kry_waveform_get_show_keyframes(KryWaveform *waveform);
void kry_waveform_set_show_time_bar(KryWaveform *waveform, gboolean val);
void kry_waveform_set_show_time_markers(KryWaveform *waveform, gboolean val);
void kry_waveform_set_show_scrub_bar(KryWaveform *waveform, gboolean val);

void kry_waveform_set_show_keyframes(KryWaveform *waveform, gboolean val);
KryWaveformKeyframeList *kry_waveform_get_keyframe_list(KryWaveform *waveform);
void kry_waveform_set_keyframe_list(KryWaveform *waveform, KryWaveformKeyframeList *list);
void kry_waveform_setup_rel_keyframe_list(KryWaveform *waveform);

void kry_waveform_marker_add(KryWaveform *waveform, KryMarker *marker);
void kry_waveform_marker_set_active_start(KryWaveform *waveform, KryMarker *marker);
void kry_waveform_marker_set_active_end(KryWaveform *waveform, KryMarker *marker);
void kry_waveform_marker_set_autoscroll(KryWaveform *waveform, KryMarker *marker);
void kry_waveform_marker_remove(KryWaveform *waveform, KryMarker *marker);
void kry_waveform_marker_remove_by_type(KryWaveform *waveform, enum marker_type type);
void kry_waveform_marker_remove_all(KryWaveform *waveform);
void kry_waveform_marker_show(KryWaveform *waveform, KryMarker *marker);
void kry_waveform_marker_hide(KryWaveform *waveform, KryMarker *marker);
void kry_waveform_marker_draw_erase(GtkWidget *widget, int mili, int mili_prev);

void kry_waveform_region_fixed_add(KryWaveform *waveform, int start, int end);

void kry_waveform_region_add(KryWaveform *waveform, KryRegion *region);
void kry_waveform_region_add_new(KryWaveform *waveform, KryMarker *marker_left, KryMarker *marker_right, int color_id = -1);
void kry_waveform_region_remove_by_type(KryWaveform *waveform, int color_id);
void kry_waveform_region_remove_all(KryWaveform *waveform);
void kry_waveform_region_fixed_list_set(KryWaveform *waveform, KryRegionFixedList *list);


void kry_waveform_set_scale(KryWaveform *waveform, int value);
double kry_waveform_get_scale(KryWaveform *waveform);
KryMarker *kry_waveform_get_marker(KryWaveform *waveform, enum marker_type type);
kryColorTable *kry_waveform_get_color_table(KryWaveform *waveform);
void kry_waveform_disable_draw(KryWaveform *widget);
void kry_waveform_enable_draw(KryWaveform *widget);
void kry_waveform_backbuffer_draw_time_bar(KryWaveform *waveform);
void kry_waveform_update_front_buffer_rect(KryWaveform *waveform, GdkRectangle *rect);
void kry_waveform_update_front_buffer(KryWaveform *waveform, int x, int width);
void kry_waveform_update_front_buffer_fast(KryWaveform *waveform, int x, int width);

void kry_waveform_fill_backbuffer(GtkWidget *widget);
gboolean kry_waveform_expose( GtkWidget *widget, GdkEventExpose *event );
void kry_waveform_backbuffer_draw_wave(GtkWidget *widget, int start, int width);
void kry_waveform_backbuffer_draw_final(GtkWidget *widget, int start, int width, gboolean force_draw_wave, gboolean draw_time_bar);
void kry_waveform_backbuffer_draw_time_bar(KryWaveform *waveform);
void kry_waveform_set_drag_selection(KryWaveform *waveform, gboolean drag);
void kry_waveform_set_marker_dragging(KryWaveform *waveform, gboolean drag);

int kry_waveform_get_index_at_rel_pixel(KryWaveform *waveform, int pixel);
void kry_waveform_data_ensure_available(KryWaveform *waveform, int sec_start, int sec_end);
int kry_waveform_get_index_at_abs_pixel(KryWaveform *waveform, int pixel);
int kry_waveform_abs_pixel_from_mili(KryWaveform *waveform, long time);
void kry_waveform_data_thread_end(KryWaveform *waveform);

void kry_waveform_set_adjustment (KryWaveform *waveform, GtkAdjustment *adjustment);

#ifdef __cplusplus
}
#endif /* __cplusplus */


#endif /* __KRY_WAVEFORM_H__ */