/** \file
 * Common GUI event handling code
 */
#include <dryos.h>
#include <propvalues.h>
#include <bmp.h>

static int bottom_bar_dirty = 0;
static int last_time_active = 0;

int is_canon_bottom_bar_dirty() { return bottom_bar_dirty; }
int get_last_time_active() { return last_time_active; }

int handle_other_events(struct event * event)
{
    extern int ml_started;
    if (!ml_started) return 1;

#if defined(CONFIG_550D) || defined(CONFIG_60D) || defined(CONFIG_600D) || defined(CONFIG_1100D)
    if (lv && event->type == 2 && event->param == GMT_LOCAL_DIALOG_REFRESH_LV)
    {
        if (lv_disp_mode == 0 && get_global_draw_setting() && liveview_display_idle() && lv_dispsize == 1)
        {
            // install a modified handler which does not activate bottom bar display timer
            reloc_liveviewapp_install(); 
            
            if (get_halfshutter_pressed()) bottom_bar_dirty = 10;
        }
        else
        {
            reloc_liveviewapp_uninstall();
            bottom_bar_dirty = 0;
        }

        if (UNAVI_FEEDBACK_TIMER_ACTIVE)
        {
            HideUnaviFeedBack_maybe();
            bottom_bar_dirty = 0;
        }
        
        if (!liveview_display_idle()) bottom_bar_dirty = 0;
        if (bottom_bar_dirty) bottom_bar_dirty--;
        
        if (bottom_bar_dirty == 1)
        {
            lens_display_set_dirty();
        }
    }
#endif
    return 1;
}

int handle_common_events_startup(struct event * event)
{   
    extern int ml_gui_initialized;
    ml_gui_initialized = 1;
    
    if (handle_tricky_canon_calls(event) == 0) return 0;

    extern int ml_started;
    extern int magic_off_request;
    if (!ml_started)    {
        if (event->param == BGMT_PRESS_SET) { magic_off_request = 1; return 0;} // don't load ML

        #ifdef CONFIG_60D
        if (event->param == BGMT_MENU) return 0; // otherwise would interfere with swap menu-erase
        #endif
        
        #if !defined(CONFIG_50D) && !defined(CONFIG_5D2)
        if (event->param == BGMT_LV) return 0; // discard REC button if it's pressed too early
        #endif
                
        return 1; // don't alter any other buttons/events until ML is fully initialized
    }
    return 1;
}

extern int ResumeLiveView();

static int pre_shutdown_requested = 0; // used for preventing wakeup from paused LiveView at shutdown (causes race condition with Canon code and crashes)

void reset_pre_shutdown_flag_task()
{
    msleep(4000);
    pre_shutdown_requested = 0;
}

int handle_common_events_by_feature(struct event * event)
{
    // common to most cameras
    // there may be exceptions
    
    // these are required for correct shutdown from powersave mode
    if (event->param == GMT_GUICMD_START_AS_CHECK || 
        event->param == GMT_GUICMD_OPEN_SLOT_COVER || 
        event->param == GMT_GUICMD_LOCK_OFF)
    {
        pre_shutdown_requested = 1;
        config_save_at_shutdown();
        task_create("pre_shutdown_reset", 0x1c, 0x1000, reset_pre_shutdown_flag_task, 0); // if false shutdown, reset this after a few seconds
        return 1;
    }
    
    if (LV_PAUSED && event->param != GMT_OLC_INFO_CHANGED) 
    { 
        int ans =  (ml_shutdown_requested || pre_shutdown_requested || sensor_cleaning || PLAY_MODE || MENU_MODE);

        //~ run_in_separate_task(ResumeLiveView, 0);
        //~ return 0;
        //~ int ans = ResumeLiveView();
        idle_wakeup_reset_counters(event->param);
        return !ans;  // if LiveView was resumed, don't do anything else (just wakeup)
    }
    idle_wakeup_reset_counters(event->param);
    
    // If we're here, we're dealing with a button press.  Record the timestamp
    // as a record of when the user was last actively pushing buttons.
    if (event->param != GMT_OLC_INFO_CHANGED)
        last_time_active = get_seconds_clock();

    if (handle_upside_down(event) == 0) return 0;
    if (handle_ml_menu_keys(event) == 0) return 0;
   
    if (handle_digic_poke(event) == 0) return 0;
    spy_event(event); // for debugging only
    if (handle_shutter_events(event) == 0) return 0;
    if (recording && event->param == BGMT_MENU) redraw(); // MENU while recording => force a redraw
    
    if (handle_buttons_being_held(event) == 0) return 0;
    //~ if (handle_morse_keys(event) == 0) return 0;
    
    #if !defined(CONFIG_1100D) // those cameras use a different button for ML menu
    if (handle_ml_menu_erase(event) == 0) return 0;
    #endif
        
    if (handle_rack_focus(event) == 0) return 0;
    if (handle_intervalometer(event) == 0) return 0;
    if (handle_transparent_overlay(event) == 0) return 0; // on 500D, these two share the same key
    if (handle_livev_playback(event, BTN_ZEBRAS_FOR_PLAYBACK) == 0) return 0;
    if (handle_af_patterns(event) == 0) return 0;
    if (handle_set_wheel_play(event) == 0) return 0;
    
    //~ #if !defined(CONFIG_50D) && !defined(CONFIG_5D2)
    if (handle_arrow_keys(event) == 0) return 0;
    //~ if (handle_lcd_sensor_shortcuts(event) == 0) return 0;
    //~ #endif
    
    if (handle_movie_rec_key(event) == 0) return 0; // movie REC key

    if (handle_trap_focus(event) == 0) return 0;

    if (handle_follow_focus(event) == 0) return 0;
    if (handle_zoom_overlay(event) == 0) return 0;
    if (handle_zoom_x5_x10(event) == 0) return 0;
    //~ if (handle_movie_mode_shortcut(event) == 0) return 0; // unstable
    
    #if !defined(CONFIG_50D) && !defined(CONFIG_5D2) && !defined(CONFIG_5D3)
    if (handle_quick_access_menu_items(event) == 0) return 0;
    #endif
    
    #if !defined(CONFIG_50D) && !defined(CONFIG_5D2)
    if (MENU_MODE && (event->param == BGMT_Q
        #ifdef BGMT_Q_ALT
        || event->param == BGMT_Q_ALT
        #endif
    ))
    #endif
    #ifdef CONFIG_50D
    if (MENU_MODE && event->param == BGMT_FUNC)
    #endif
    #ifdef CONFIG_5D2
    if (MENU_MODE && event->param == BGMT_PICSTYLE)
    #endif
         return handle_keep_ml_after_format_toggle();
    
    if (handle_bulb_ramping_keys(event) == 0) return 0;

    if (handle_disp_preset_key(event) == 0) return 0;
    if (handle_fps_events(event) == 0) return 0;
    if (handle_fast_zoom_in_play_mode(event) == 0) return 0;
    //~ if (handle_pause_zebras(event) == 0) return 0;
    //~ if (handle_kenrockwell_zoom(event) == 0) return 0;
    return 1;
}