zathura_rectangle_t
recalc_rectangle(zathura_page_t* page, zathura_rectangle_t rectangle)
{
if (page == NULL) {
goto error_ret;
}
zathura_document_t* document = zathura_page_get_document(page);
if (document == NULL) {
goto error_ret;
}
double page_height = zathura_page_get_height(page);
double page_width = zathura_page_get_width(page);
double scale = zathura_document_get_scale(document);
zathura_rectangle_t tmp = rotate_rectangle(rectangle, zathura_document_get_rotation(document), page_height, page_width);
tmp.x1 *= scale;
tmp.x2 *= scale;
tmp.y1 *= scale;
tmp.y2 *= scale;
return tmp;
error_ret:
return rectangle;
}
bool
sc_rotate(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(zathura->document != NULL, false);
const unsigned int page_number = zathura_document_get_current_page_number(zathura->document);
int angle = 90;
if (argument != NULL && argument->n == ROTATE_CCW) {
angle = 270;
}
/* update rotate value */
t = (t == 0) ? 1 : t;
unsigned int rotation = zathura_document_get_rotation(zathura->document);
zathura_document_set_rotation(zathura->document, (rotation + angle * t) % 360);
/* update scale */
girara_argument_t new_argument = { zathura_document_get_adjust_mode(zathura->document), NULL };
sc_adjust_window(zathura->ui.session, &new_argument, NULL, 0);
/* render all pages again */
render_all(zathura);
page_set(zathura, page_number);
return false;
}
double
page_calc_height_width(zathura_page_t* page, unsigned int* page_height, unsigned int* page_width, bool rotate)
{
g_return_val_if_fail(page != NULL && page_height != NULL && page_width != NULL, 0.0);
zathura_document_t* document = zathura_page_get_document(page);
if (document == NULL) {
return 0.0;
}
double height = zathura_page_get_height(page);
double width = zathura_page_get_width(page);
double scale = zathura_document_get_scale(document);
double real_scale;
if (rotate && zathura_document_get_rotation(document) % 180) {
*page_width = ceil(height * scale);
*page_height = ceil(width * scale);
real_scale = MAX(*page_width / height, *page_height / width);
} else {
*page_width = ceil(width * scale);
*page_height = ceil(height * scale);
real_scale = MAX(*page_width / width, *page_height / height);
}
return real_scale;
}
double
page_calc_height_width(zathura_document_t* document, double height,
double width, unsigned int* page_height,
unsigned int* page_width, bool rotate)
{
g_return_val_if_fail(document != NULL && page_height != NULL && page_width != NULL, 0.0);
double scale = zathura_document_get_scale(document);
if (rotate && zathura_document_get_rotation(document) % 180) {
*page_width = round(height * scale);
*page_height = round(width * scale);
scale = MAX(*page_width / height, *page_height / width);
} else {
*page_width = round(width * scale);
*page_height = round(height * scale);
scale = MAX(*page_width / width, *page_height / height);
}
return scale;
}
void
page_calc_position(zathura_document_t* document, double x, double y, double* xn,
double* yn)
{
g_return_if_fail(document != NULL && xn != NULL && yn != NULL);
const unsigned int rot = zathura_document_get_rotation(document);
if (rot == 90) {
*xn = 1 - y;
*yn = x;
} else if (rot == 180) {
*xn = 1 - x;
*yn = 1 - y;
} else if (rot == 270) {
*xn = y;
*yn = 1 - x;
} else {
*xn = x;
*yn = y;
}
}
char*
djvu_page_get_text(zathura_page_t* page, void* UNUSED(data), zathura_rectangle_t
rectangle, zathura_error_t* error)
{
if (page == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_INVALID_ARGUMENTS;
}
goto error_ret;
}
zathura_document_t* document = zathura_page_get_document(page);
if (document == NULL) {
goto error_ret;
}
djvu_document_t* djvu_document = zathura_document_get_data(document);
djvu_page_text_t* page_text = djvu_page_text_new(djvu_document, page);
if (page_text == NULL) {
goto error_ret;
}
double tmp = 0;
double page_height = zathura_page_get_height(page);
double page_width = zathura_page_get_width(page);
switch (zathura_document_get_rotation(document)) {
case 90:
tmp = rectangle.x1;
rectangle.x1 = rectangle.y1;
rectangle.y1 = tmp;
tmp = rectangle.x2;
rectangle.x2 = rectangle.y2;
rectangle.y2 = tmp;
break;
case 180:
tmp = rectangle.x1;
rectangle.x1 = (page_width - rectangle.x2);
rectangle.x2 = (page_width - tmp);
break;
case 270:
tmp = rectangle.y2;
rectangle.y2 = (page_height - rectangle.x1);
rectangle.x1 = (page_width - tmp);
tmp = rectangle.y1;
rectangle.y1 = (page_height - rectangle.x2);
rectangle.x2 = (page_width - tmp);
break;
default:
tmp = rectangle.y1;
rectangle.y1 = (page_height - rectangle.y2);
rectangle.y2 = (page_height - tmp);
break;
}
/* adjust to scale */
rectangle.x1 /= ZATHURA_DJVU_SCALE;
rectangle.x2 /= ZATHURA_DJVU_SCALE;
rectangle.y1 /= ZATHURA_DJVU_SCALE;
rectangle.y2 /= ZATHURA_DJVU_SCALE;
char* text = djvu_page_text_select(page_text, rectangle);
djvu_page_text_free(page_text);
return text;
error_ret:
if (error != NULL && *error == ZATHURA_ERROR_OK) {
*error = ZATHURA_ERROR_UNKNOWN;
}
return NULL;
}
