Exemplo n.º 1
0
bool
sc_jumplist(girara_session_t* session, girara_argument_t* argument, girara_event_t* UNUSED(event), unsigned int UNUSED(t))
{
  g_return_val_if_fail(session != NULL, false);
  g_return_val_if_fail(session->global.data != NULL, false);
  zathura_t* zathura = session->global.data;
  g_return_val_if_fail(argument != NULL, false);
  g_return_val_if_fail(zathura->document != NULL, false);

  zathura_jump_t* jump = NULL;
  switch(argument->n) {
    case FORWARD:
      zathura_jumplist_save(zathura);
      zathura_jumplist_forward(zathura);
      jump = zathura_jumplist_current(zathura);
      break;

    case BACKWARD:
      zathura_jumplist_save(zathura);
      zathura_jumplist_backward(zathura);
      jump = zathura_jumplist_current(zathura);
      break;
  }

  if (jump != NULL) {
    page_set(zathura, jump->page);
    const double s = zathura_document_get_scale(zathura->document);
    position_set_delayed(zathura, jump->x * s, jump->y * s);
  }

  return false;
}
Exemplo n.º 2
0
bool
sc_bisect(girara_session_t* session, girara_argument_t* argument,
          girara_event_t* UNUSED(event), unsigned int t)
{
  g_return_val_if_fail(session != NULL, false);
  g_return_val_if_fail(session->global.data != NULL, false);
  zathura_t* zathura = session->global.data;
  g_return_val_if_fail(argument != NULL, false);
  g_return_val_if_fail(zathura->document != NULL, false);

  const unsigned int num_pages = zathura_document_get_number_of_pages(zathura->document);
  const unsigned int cur_page = zathura_document_get_current_page_number(zathura->document);

  /* process arguments */
  int direction;
  if (t > 0 && t <= num_pages) {
    /* bisect between cur_page and t */
    t -= 1;
    if (t == cur_page) {
      /* nothing to do */
      return false;
    }
    else if (t > cur_page) {
      zathura->bisect.start = cur_page;
      zathura->bisect.end = t;
      direction = BACKWARD;
    } else {
      zathura->bisect.start = t;
      zathura->bisect.end = cur_page;
      direction = FORWARD;
    }
  } else if (argument != NULL)  {
    direction = argument->n;

    /* setup initial bisect range */
    zathura_jump_t* jump = zathura_jumplist_current(zathura);
    if (jump == NULL) {
      girara_debug("bisecting between first and last page because there are no jumps");
      zathura->bisect.start = 0;
      zathura->bisect.end = num_pages - 1;

    } else if (jump->page != cur_page || jump->page != zathura->bisect.last_jump) {
      girara_debug("last jump doesn't match up, starting new bisecting");
      zathura->bisect.start = 0;
      zathura->bisect.end = num_pages - 1;

      unsigned int prev_page;
      if (direction == FORWARD) {
        prev_page = num_pages - 1;
      } else {
        prev_page = 0;
      }

      /* check if we have previous jumps */
      if (zathura_jumplist_has_previous(zathura) == true) {
        zathura_jumplist_backward(zathura);
        jump = zathura_jumplist_current(zathura);
        if (jump != NULL) {
          prev_page = jump->page;
        }
        zathura_jumplist_forward(zathura);
      }

      zathura->bisect.start = MIN(prev_page, cur_page);
      zathura->bisect.end = MAX(prev_page, cur_page);
      zathura->bisect.last_jump = cur_page;
    }
  } else {
    return false;
  }

  girara_debug("bisecting between %d and %d, at %d", zathura->bisect.start, zathura->bisect.end, cur_page);
  if (zathura->bisect.start == zathura->bisect.end) {
    /* nothing to do */
    return false;
  }

  unsigned int next_page = cur_page;
  unsigned int next_start = zathura->bisect.start;
  unsigned int next_end = zathura->bisect.end;

  /* here we have next_start <= next_page <= next_end */

  /* bisect step */
  switch(direction) {
    case FORWARD:
      if (cur_page != zathura->bisect.end) {
        next_page = (cur_page + zathura->bisect.end) / 2;
        if (next_page == cur_page) {
          ++next_page;
        }
        next_start = cur_page;
      }
      break;

    case BACKWARD:
      if (cur_page != zathura->bisect.start) {
        next_page = (cur_page + zathura->bisect.start) / 2;
        if (next_page == cur_page) {
          --next_page;
        }
        next_end = cur_page;
      }
      break;
  }

  if (next_page == cur_page) {
    /* nothing to do */
    return false;
  }

  girara_debug("bisecting between %d and %d, jumping to %d", zathura->bisect.start, zathura->bisect.end, next_page);
  zathura->bisect.last_jump = next_page;
  zathura->bisect.start = next_start;
  zathura->bisect.end = next_end;

  zathura_jumplist_add(zathura);
  page_set(zathura, next_page);
  zathura_jumplist_add(zathura);

  return false;
}
Exemplo n.º 3
0
bool
sc_jumplist(girara_session_t* session, girara_argument_t* argument,
            girara_event_t* UNUSED(event), unsigned int UNUSED(t))
{
  g_return_val_if_fail(session != NULL, false);
  g_return_val_if_fail(session->global.data != NULL, false);
  zathura_t* zathura = session->global.data;
  g_return_val_if_fail(argument != NULL, false);
  g_return_val_if_fail(zathura->document != NULL, false);

  /* if no jumps in the jumplist */
  if (zathura->jumplist.size == 0) {
    return true;
  }

  double x = zathura_document_get_position_x(zathura->document);
  double y = zathura_document_get_position_y(zathura->document);

  zathura_jump_t* jump = NULL;
  zathura_jump_t* prev_jump = zathura_jumplist_current(zathura);
  bool go_to_current = false;

  if (zathura_jumplist_has_next(zathura) == false || zathura_jumplist_has_previous(zathura) == false) {
    if (x == prev_jump->x && y == prev_jump->y) {
      go_to_current = false;
    } else {
      go_to_current = true;
    }
  }

  switch(argument->n) {
    case FORWARD:
      if (go_to_current == true && zathura_jumplist_has_previous(zathura) == false) {
        jump = zathura_jumplist_current(zathura);
      } else {
        zathura_jumplist_forward(zathura);
        jump = zathura_jumplist_current(zathura);
      }
      break;
    case BACKWARD:
      if (go_to_current == true && zathura_jumplist_has_next(zathura) == false) {
        jump = zathura_jumplist_current(zathura);
      } else {
        zathura_jumplist_backward(zathura);
        jump = zathura_jumplist_current(zathura);
      }
      break;
  }

  if (jump == prev_jump) {
    if ((zathura_jumplist_has_previous(zathura) == false && argument->n == BACKWARD) ||
        (zathura_jumplist_has_next(zathura) == false && argument->n == FORWARD)) {
      jump = NULL;
    }
  }

  if (jump != NULL) {
    page_set(zathura, jump->page);
    position_set(zathura, jump->x, jump->y);
  }

  return false;
}
Exemplo n.º 4
0
bool
sc_bisect(girara_session_t* session, girara_argument_t* argument,
          girara_event_t* UNUSED(event), unsigned int t)
{
  g_return_val_if_fail(session != NULL, false);
  g_return_val_if_fail(session->global.data != NULL, false);
  zathura_t* zathura = session->global.data;
  g_return_val_if_fail(argument != NULL, false);
  g_return_val_if_fail(zathura->document != NULL, false);

  unsigned int number_of_pages, cur_page, prev_page, prev2_page;
  bool have_prev, have_prev2;

  zathura_jump_t* prev_jump = NULL;
  zathura_jump_t* prev2_jump = NULL;

  number_of_pages= zathura_document_get_number_of_pages(zathura->document);
  cur_page = zathura_document_get_current_page_number(zathura->document);

  prev_page = prev2_page = 0;
  have_prev = have_prev2 = false;

  /* save position at current jump point */
  zathura_jumplist_save(zathura);

  /* process arguments */
  int direction;
  if (t > 0 && t <= number_of_pages) {
    /* jump to page t, and bisect between cur_page and t */
    page_set(zathura, t-1);
    zathura_jumplist_add(zathura);
    if (t-1 > cur_page) {
      direction = BACKWARD;
    } else {
      direction = FORWARD;
    }

  } else if (argument != NULL)  {
    direction = argument->n;

  } else {
    return false;
  }

  cur_page = zathura_document_get_current_page_number(zathura->document);

  if (zathura_jumplist_has_previous(zathura)) {
    /* If there is a previous jump, get its page */
    zathura_jumplist_backward(zathura);
    prev_jump = zathura_jumplist_current(zathura);
    if (prev_jump) {
      prev_page = prev_jump->page;
      have_prev = true;
    }

    if (zathura_jumplist_has_previous(zathura)) {
      /* If there is a second previous jump, get its page. */
      zathura_jumplist_backward(zathura);
      prev2_jump = zathura_jumplist_current(zathura);
      if (prev2_jump) {
        prev2_page = prev2_jump->page;
        have_prev2 = true;
      }
      zathura_jumplist_forward(zathura);
    }
    zathura_jumplist_forward(zathura);
  }

  /* now, we are back at the initial jump. prev_page and prev2_page contain
   the pages for previous and second previous jump if they exist. */

  /* bisect */
  switch(direction) {
    case FORWARD:
      if (have_prev && cur_page <= prev_page) {
        /* add a new jump point */
        if (cur_page < prev_page) {
          page_set(zathura, (cur_page + prev_page)/2);
          zathura_jumplist_add(zathura);
        }

      } else if (have_prev2 && cur_page <= prev2_page) {
        /* save current position at previous jump point */
        if (cur_page < prev2_page) {
          zathura_jumplist_backward(zathura);
          zathura_jumplist_save(zathura);
          zathura_jumplist_forward(zathura);

          page_set(zathura, (cur_page + prev2_page)/2);
          zathura_jumplist_save(zathura);
        }
      } else {
        /* none of prev_page or prev2_page comes after cur_page */
        page_set(zathura, (cur_page + number_of_pages - 1)/2);
        zathura_jumplist_add(zathura);
      }
      break;

    case BACKWARD:
      if (have_prev && prev_page <= cur_page) {
        /* add a new jump point */
        if (prev_page < cur_page) {
          page_set(zathura, (cur_page + prev_page)/2);
          zathura_jumplist_add(zathura);
        }

      } else if (have_prev2 && prev2_page <= cur_page) {
        /* save current position at previous jump point */
        if (prev2_page < cur_page) {
          zathura_jumplist_backward(zathura);
          zathura_jumplist_save(zathura);
          zathura_jumplist_forward(zathura);

          page_set(zathura, (cur_page + prev2_page)/2);
          zathura_jumplist_save(zathura);
        }

      } else {
        /* none of prev_page or prev2_page comes before cur_page */
        page_set(zathura, cur_page/2);
        zathura_jumplist_add(zathura);
      }
      break;
  }

  /* adjust horizontal position */
  GtkAdjustment* hadjustment = gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(session->gtk.view));
  cb_view_hadjustment_changed(hadjustment, zathura);

  return false;
}