trackcanvas.h

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#ifndef TRACKCANVAS_H
#define TRACKCANVAS_H

#include "asset.inc"
#include "auto.inc"
#include "autos.inc"
#include "bctimer.inc"
#include "edit.inc"
#include "edithandles.inc"
#include "floatauto.inc"
#include "floatautos.inc"
#include "guicast.h"
#include "keyframe.inc"
#include "mwindow.inc"
#include "mwindowgui.inc"
#include "plugin.inc"
#include "resourcepixmap.inc"
#include "track.inc"
#include "tracks.inc"
#include "transitionhandles.inc"
#include "keyframe.inc"
#include "floatauto.inc"

class TrackCanvas : public BC_SubWindow
{
public:
        TrackCanvas(MWindow *mwindow, MWindowGUI *gui);
        ~TrackCanvas();

        int create_objects();
        void resize_event();
        int drag_start_event();
        int drag_motion_event();
        int cursor_leave_event();
        int drag_stop_event();
        int keypress_event();
        void draw_resources(int force = 0,  // Redraw everything
                int indexes_only = 0,     // Redraw only certain audio resources with indexes
                Asset *index_asset = 0);
        void draw_highlight_rectangle(int x, int y, int w, int h);
        void draw_highlight_insertion(int x, int y, int w, int h);
        void draw_playback_cursor();
        void draw_highlighting();
// User can either call draw or draw_overlays to copy a fresh 
// canvas and just draw the overlays over it
        void draw_overlays();
        void update_handles();
// Convert edit coords to transition coords
        void get_transition_coords(int64_t &x, int64_t &y, int64_t &w, int64_t &h);
        void get_handle_coords(Edit *edit, 
                int64_t &x, 
                int64_t &y, 
                int64_t &w, 
                int64_t &h, 
                int side);
        void draw_title(Edit *edit, 
                int64_t edit_x, 
                int64_t edit_y, 
                int64_t edit_w, 
                int64_t edit_h);
        void draw_automation();
        void draw_inout_points();
        void draw_auto(Auto *current, 
                int x, 
                int y, 
                int center_pixel, 
                int zoom_track,
                int color);
        void draw_floatauto(Auto *current, 
                int x, 
                int y, 
                int in_x,
                int in_y,
                int out_x,
                int out_y,
                int center_pixel, 
                int zoom_track,
                int color);
        int test_auto(Auto *current, 
                int x, 
                int y, 
                int center_pixel, 
                int zoom_track, 
                int cursor_x, 
                int cursor_y, 
                int buttonpress);
        int test_floatauto(Auto *current, 
                int x, 
                int y, 
                int in_x,
                int in_y,
                int out_x,
                int out_y,
                int center_pixel, 
                int zoom_track, 
                int cursor_x, 
                int cursor_y, 
                int buttonpress);
        void draw_floatline(int center_pixel, 
                FloatAuto *previous,
                FloatAuto *current,
                FloatAutos *autos,
                double unit_start,
                double zoom_units,
                double yscale,
                int ax,
                int ay,
                int ax2,
                int ay2,
                int color);
        int test_floatline(int center_pixel, 
                FloatAutos *autos,
                double unit_start,
                double zoom_units,
                double yscale,
                int x1,
                int x2,
                int cursor_x, 
                int cursor_y, 
                int buttonpress);
        void draw_toggleline(int center_pixel, 
                int ax,
                int ay,
                int ax2,
                int ay2,
                int color);
        int test_toggleline(Autos *autos,
                int center_pixel, 
                int x1,
                int y1,
                int x2,
                int y2,
                int cursor_x, 
                int cursor_y, 
                int buttonpress);
        int do_keyframes(int cursor_x, 
                int cursor_y, 
                int draw, 
                int buttonpress, 
                int &new_cursor,
                int &update_cursor,
                int &rerender);

        int do_float_autos(Track *track, 
                Autos *autos, 
                int cursor_x, 
                int cursor_y, 
                int draw, 
                int buttonpress,
                int color,
                Auto * &auto_instance);

        int do_toggle_autos(Track *track, 
                Autos *autos, 
                int cursor_x, 
                int cursor_y, 
                int draw, 
                int buttonpress,
                int color,
                Auto * &auto_instance);
        int do_autos(Track *track, 
                Autos *autos, 
                int cursor_x, 
                int cursor_y, 
                int draw, 
                int buttonpress,
                BC_Pixmap *pixmap,
                Auto * &auto_instance);
        int do_plugin_autos(Track *track,
                int cursor_x, 
                int cursor_y, 
                int draw, 
                int buttonpress,
                Plugin* &keyframe_plugin,
                KeyFrame* &keyframe_instance);


        void calculate_viewport(Track *track, 
                double &view_start,
                double &unit_start,
                double &view_end,
                double &unit_end,
                double &yscale,
                int &center_pixel,
                double &zoom_sample,
                double &zoom_units);

// Convert percentage position inside track to value.
// if is_toggle is 1, the result is either 0 or 1.
// if reference is nonzero and a FloatAuto, 
//     the result is made relative to the value in reference.
        float percentage_to_value(float percentage, 
                int is_toggle,
                Auto *reference);

// Get x and y of a FloatAuto relative to center_pixel
        void calculate_auto_position(double *x, 
                double *y,
                double *in_x,
                double *in_y,
                double *out_x,
                double *out_y,
                Auto *current,
                double unit_start,
                double zoom_units,
                double yscale);
        void synchronize_autos(float change, Track *skip, FloatAuto *fauto, int fill_gangs);


        void draw_brender_start();
        void draw_loop_points();
        void draw_transitions();
        void draw_drag_handle();
        void draw_plugins();
        void update_edit_handles(Edit *edit, int64_t edit_x, int64_t edit_y, int64_t edit_w, int64_t edit_h);
        void update_transitions();
        void update_keyframe_handles(Track *track);
// Draw everything to synchronize with the view
        void draw(int force = 0, int hide_cursor = 1);
// Draw resources during index building
        void draw_indexes(Asset *asset);
// Get location of edit on screen without boundary checking
        void edit_dimensions(Edit *edit, int64_t &x, int64_t &y, int64_t &w, int64_t &h);
        void track_dimensions(Track *track, int64_t &x, int64_t &y, int64_t &w, int64_t &h);
        void plugin_dimensions(Plugin *plugin, int64_t &x, int64_t &y, int64_t &w, int64_t &h);
        void get_pixmap_size(Edit *edit, int64_t edit_x, int64_t edit_w, int64_t &pixmap_x, int64_t &pixmap_w, int64_t &pixmap_h);
        ResourcePixmap* create_pixmap(Edit *edit, int64_t edit_x, int64_t pixmap_x, int64_t pixmap_w, int64_t pixmap_h);
        int set_index_file(int flash, Asset *asset);
        void update_cursor();
// Get edit and handle the cursor is over
        int do_edit_handles(int cursor_x, 
                int cursor_y, 
                int button_press,
                int &redraw,
                int &rerender);
// Get plugin and handle the cursor if over
        int do_plugin_handles(int cursor_x, 
                int cursor_y, 
                int button_press,
                int &redraw,
                int &rerender);
// Get edit the cursor is over
        int do_edits(int cursor_x, 
                int cursor_y, 
                int button_press,
                int drag_start,
                int &redraw,
                int &rerender,
                int &new_cursor,
                int &update_cursor);
        int do_tracks(int cursor_x, 
                int cursor_y,
                int button_press);
        int test_resources(int cursor_x, int cursor_y);
        int do_plugins(int cursor_x, 
                int cursor_y, 
                int drag_start,
                int button_press,
                int &redraw,
                int &rerender);
        int do_transitions(int cursor_x, 
                int cursor_y, 
                int button_press,
                int &new_cursor,
                int &update_cursor);
        int button_press_event();
        int button_release_event();
        int cursor_motion_event();
        int activate();
        int deactivate();
        int repeat_event(int64_t duration);
        void start_dragscroll();
        void stop_dragscroll();
        int start_selection(double position);
        int drag_motion();
        int drag_stop();
        int64_t get_drop_position (int *is_insertion, Edit *moved_edit, int64_t moved_edit_length);
        void end_edithandle_selection();
        void end_pluginhandle_selection();
// Number of seconds spanned by the trackcanvas
        double time_visible();
        void update_drag_handle();
        int update_drag_edit();
        int update_drag_floatauto(int cursor_x, int cursor_y);
        int update_drag_toggleauto(int cursor_x, int cursor_y);
        int update_drag_auto(int cursor_x, int cursor_y);
        int update_drag_pluginauto(int cursor_x, int cursor_y);

// Update status bar to reflect drag operation
        void update_drag_caption();

        int get_title_h();
        int resource_h();

// Display hourglass if timer expired
        void test_timer();


        MWindow *mwindow;
        MWindowGUI *gui;
        ArrayList<ResourcePixmap*> resource_pixmaps;
// Allows overlays to get redrawn without redrawing the resources
        BC_Pixmap *background_pixmap;
        BC_DragWindow *drag_popup;
        BC_Pixmap *transition_pixmap;
        EditHandles *edit_handles;
//      TransitionHandles *transition_handles;
        BC_Pixmap *keyframe_pixmap;
        BC_Pixmap *camerakeyframe_pixmap;
        BC_Pixmap *modekeyframe_pixmap;
        BC_Pixmap *pankeyframe_pixmap;
        BC_Pixmap *projectorkeyframe_pixmap;
        BC_Pixmap *maskkeyframe_pixmap;
        int active;
// Currently in a drag scroll operation
        int drag_scroll;
// Don't stop hourglass if it was never started before the operation.
        int hourglass_enabled;

// Temporary for picon drawing
        VFrame *temp_picon;
// Timer for hourglass
        Timer *resource_timer;
















// event handlers
        int button_release();
        int draw_playback_cursor(int pixel, int flash = 1);
        int draw_loop_point(int64_t position, int flash);
        void draw_paste_destination();

        int draw_floating_handle(int flash);


private:
        int end_translation();

// ====================================== cursor selection type
        int auto_selected;               // 1 if automation selected
        int translate_selected;          // 1 if video translation selected

        int handle_selected;       // if a handle is selected
                                                                // 1 if not floating yet
                                                                // 2 if floating
        int which_handle;           // 1 left or 2 right handle
        int64_t handle_oldposition;       // original position of handle
        int64_t handle_position;           // current position of handle
        int handle_pixel;                // original pixel position of pointer in window
        int handle_mode;   // Determined by which button was pressed

        int current_end;       // end of selection 1 left 2 right
        double selection_midpoint1, selection_midpoint2;        // division between current ends
        int region_selected;         // 1 if region selected
        int selection_type;  // Whether an edit or a sample is selected

        int auto_reposition(int &cursor_x, int &cursor_y, int64_t cursor_position);
        int update_selection(int64_t cursor_position);
        int update_handle_selection(int64_t cursor_position);
};

#endif

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