/* See LICENSE file for license and copyright information */

#include <callbacks.h>
#include <girara.h>
#include <stdlib.h>
#include <gtk/gtk.h>

#include "zathura.h"
#include "render.h"
#include "document.h"

gboolean
cb_destroy(GtkWidget* widget, gpointer data)
{
  if (Zathura.UI.session) {
    girara_session_destroy(Zathura.UI.session);
  }

  document_close();

  /* free registered plugins */
  zathura_document_plugins_free();

  return TRUE;
}

void
buffer_changed(girara_session_t* session)
{
  g_return_if_fail(session != NULL);

  char* buffer = girara_buffer_get(session);

  if (buffer) {
    girara_statusbar_item_set_text(session, Zathura.UI.statusbar.buffer, buffer);
    free(buffer);
  } else {
    girara_statusbar_item_set_text(session, Zathura.UI.statusbar.buffer, "");
  }
}

void
cb_view_vadjustment_value_changed(GtkAdjustment *adjustment, gpointer data)
{
  if (!Zathura.document || !Zathura.document->pages || !Zathura.UI.page_view) {
    return;
  }

  // FIXME
  /* get current adjustment values */
  /*gdouble lower = gtk_adjustment_get_value(adjustment);*/
  /*gdouble upper = lower + gtk_adjustment_get_page_size(adjustment);*/

  /* find page that fits */
  for (unsigned int page_id = 0; page_id < Zathura.document->number_of_pages; page_id++)
  {
    zathura_page_t* page = Zathura.document->pages[page_id];

    /* check for rendered attribute */
    if (page->rendered) {
      continue;
    }

    /*double begin = page->offset;*/
    /*double end   = page->offset + page->height;*/

    /*if (    ( (begin >= lower) && (end <= upper) ) [> page is in viewport <]*/
        /*|| ( (begin <= lower) && (end >= lower) && (end <= upper) ) [> end of the page is in viewport <]*/
        /*|| ( (begin >= lower) && (end >= upper) && (begin <= upper) ) [> begin of the page is in viewport <]*/
      /*) {*/
    if (page_id < 1) {
        render_page(Zathura.Sync.render_thread, Zathura.document->pages[page_id]);
    }
    /*}*/
  }
}