bool
sc_mouse_scroll(girara_session_t* session, girara_argument_t* argument, girara_event_t* 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(event != NULL, false);
if (zathura->document == NULL) {
return false;
}
static int x = 0;
static int y = 0;
GtkAdjustment* x_adj = NULL;
GtkAdjustment* y_adj = NULL;
switch (event->type) {
/* scroll */
case GIRARA_EVENT_SCROLL_UP:
case GIRARA_EVENT_SCROLL_DOWN:
case GIRARA_EVENT_SCROLL_LEFT:
case GIRARA_EVENT_SCROLL_RIGHT:
return sc_scroll(session, argument, NULL, t);
/* drag */
case GIRARA_EVENT_BUTTON_PRESS:
x = event->x;
y = event->y;
break;
case GIRARA_EVENT_BUTTON_RELEASE:
x = 0;
y = 0;
break;
case GIRARA_EVENT_MOTION_NOTIFY:
x_adj = gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(session->gtk.view));
y_adj = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(session->gtk.view));
if (x_adj == NULL || y_adj == NULL) {
return false;
}
zathura_adjustment_set_value(x_adj,
gtk_adjustment_get_value(x_adj) - (event->x - x));
zathura_adjustment_set_value(y_adj,
gtk_adjustment_get_value(y_adj) - (event->y - y));
break;
/* unhandled events */
default:
break;
}
return false;
}
void
zathura_adjustment_set_value_from_ratio(GtkAdjustment* adjustment,
gdouble ratio)
{
if (ratio == 0.0) {
return;
}
gdouble lower = gtk_adjustment_get_lower(adjustment);
gdouble upper = gtk_adjustment_get_upper(adjustment);
gdouble page_size = gtk_adjustment_get_page_size(adjustment);
gdouble value = (upper - lower) * ratio + lower - page_size / 2.0;
zathura_adjustment_set_value(adjustment, value);
}
bool
sc_search(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);
const int num_pages = zathura_document_get_number_of_pages(zathura->document);
const int cur_page = zathura_document_get_current_page_number(zathura->document);
int diff = argument->n == FORWARD ? 1 : -1;
if (zathura->global.search_direction == BACKWARD)
diff = -diff;
zathura_page_t* target_page = NULL;
int target_idx = 0;
for (int page_id = 0; page_id < num_pages; ++page_id) {
int tmp = cur_page + diff * page_id;
zathura_page_t* page = zathura_document_get_page(zathura->document, (tmp + num_pages) % num_pages);
if (page == NULL) {
continue;
}
GtkWidget* page_widget = zathura_page_get_widget(zathura, page);
int num_search_results = 0, current = -1;
g_object_get(page_widget, "search-current", ¤t,
"search-length", &num_search_results, NULL);
if (num_search_results == 0 || current == -1) {
continue;
}
if (diff == 1 && current < num_search_results - 1) {
/* the next result is on the same page */
target_page = page;
target_idx = current + 1;
} else if (diff == -1 && current > 0) {
target_page = page;
target_idx = current - 1;
} else {
/* the next result is on a different page */
zathura_jumplist_save(zathura);
g_object_set(page_widget, "search-current", -1, NULL);
for (int npage_id = 1; page_id < num_pages; ++npage_id) {
int ntmp = cur_page + diff * (page_id + npage_id);
zathura_page_t* npage = zathura_document_get_page(zathura->document, (ntmp + 2*num_pages) % num_pages);
zathura_document_set_current_page_number(zathura->document, zathura_page_get_index(npage));
GtkWidget* npage_page_widget = zathura_page_get_widget(zathura, npage);
g_object_get(npage_page_widget, "search-length", &num_search_results, NULL);
if (num_search_results != 0) {
target_page = npage;
target_idx = diff == 1 ? 0 : num_search_results - 1;
break;
}
}
zathura_jumplist_add(zathura);
}
break;
}
if (target_page != NULL) {
girara_list_t* results = NULL;
GtkWidget* page_widget = zathura_page_get_widget(zathura, target_page);
g_object_set(page_widget, "search-current", target_idx, NULL);
g_object_get(page_widget, "search-results", &results, NULL);
zathura_rectangle_t* rect = girara_list_nth(results, target_idx);
zathura_rectangle_t rectangle = recalc_rectangle(target_page, *rect);
page_offset_t offset;
page_calculate_offset(zathura, target_page, &offset);
GtkAdjustment* view_vadjustment = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(zathura->ui.session->gtk.view));
int y = offset.y - gtk_adjustment_get_page_size(view_vadjustment) / 2 + rectangle.y1;
zathura_adjustment_set_value(view_vadjustment, y);
bool search_hadjust = true;
girara_setting_get(session, "search-hadjust", &search_hadjust);
if (search_hadjust == true) {
GtkAdjustment* view_hadjustment = gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(zathura->ui.session->gtk.view));
int x = offset.x - gtk_adjustment_get_page_size(view_hadjustment) / 2 + rectangle.x1;
zathura_adjustment_set_value(view_hadjustment, x);
}
}
return false;
}
bool
sc_scroll(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);
if (zathura->document == NULL) {
return false;
}
if (t == 0) {
t = 1;
}
GtkAdjustment* adjustment = NULL;
if ( (argument->n == LEFT) || (argument->n == FULL_LEFT) || (argument->n == HALF_LEFT) ||
(argument->n == RIGHT) || (argument->n == FULL_RIGHT) || (argument->n == HALF_RIGHT)) {
adjustment = gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(session->gtk.view));
} else {
adjustment = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(session->gtk.view));
}
gdouble view_size = gtk_adjustment_get_page_size(adjustment);
gdouble value = gtk_adjustment_get_value(adjustment);
gdouble max = gtk_adjustment_get_upper(adjustment) - view_size;
zathura->global.update_page_number = true;
float scroll_step = 40;
girara_setting_get(session, "scroll-step", &scroll_step);
float scroll_hstep = -1;
girara_setting_get(session, "scroll-hstep", &scroll_hstep);
if (scroll_hstep < 0) {
scroll_hstep = scroll_step;
}
float scroll_full_overlap = 0.0;
girara_setting_get(session, "scroll-full-overlap", &scroll_full_overlap);
bool scroll_page_aware = false;
girara_setting_get(session, "scroll-page-aware", &scroll_page_aware);
bool scroll_wrap = false;
girara_setting_get(session, "scroll-wrap", &scroll_wrap);
int padding = 1;
girara_setting_get(session, "page-padding", &padding);
gdouble new_value;
switch(argument->n) {
case FULL_UP:
case FULL_LEFT:
new_value = value - (1.0 - scroll_full_overlap) * view_size - padding;
break;
case FULL_DOWN:
case FULL_RIGHT:
new_value = value + (1.0 - scroll_full_overlap) * view_size + padding;
break;
case HALF_UP:
case HALF_LEFT:
new_value = value - ((view_size + padding) / 2);
break;
case HALF_DOWN:
case HALF_RIGHT:
new_value = value + ((view_size + padding) / 2);
break;
case LEFT:
new_value = value - scroll_hstep * t;
break;
case UP:
new_value = value - scroll_step * t;
break;
case RIGHT:
new_value = value + scroll_hstep * t;
break;
case DOWN:
new_value = value + scroll_step * t;
break;
case TOP:
new_value = 0;
break;
case BOTTOM:
new_value = max;
break;
default:
new_value = value;
}
if (scroll_wrap == true) {
if (new_value < 0)
new_value = max;
else if (new_value > max)
new_value = 0;
}
if (scroll_page_aware == true) {
int page_offset;
double page_size;
{
unsigned int page_id = zathura_document_get_current_page_number(zathura->document);
zathura_page_t* page = zathura_document_get_page(zathura->document, page_id);
page_offset_t offset;
page_calculate_offset(zathura, page, &offset);
double scale = zathura_document_get_scale(zathura->document);
if ((argument->n == LEFT) || (argument->n == FULL_LEFT) || (argument->n == HALF_LEFT) ||
(argument->n == RIGHT) || (argument->n == FULL_RIGHT) || (argument->n == HALF_RIGHT)) {
page_offset = offset.x;
page_size = zathura_page_get_width(page) * scale;
} else {
page_offset = offset.y;
page_size = zathura_page_get_height(page) * scale;
}
page_offset -= padding / 2;
page_size += padding;
}
if ((argument->n == FULL_DOWN) || (argument->n == HALF_DOWN) ||
(argument->n == FULL_RIGHT) || (argument->n == HALF_RIGHT)) {
if ((page_offset > value) &&
(page_offset < value + view_size)) {
new_value = page_offset;
} else if ((page_offset <= value) &&
(page_offset + page_size < value + view_size)) {
new_value = page_offset + page_size + 1;
} else if ((page_offset <= value) &&
(page_offset + page_size < new_value + view_size)) {
new_value = page_offset + page_size - view_size + 1;
}
} else if ((argument->n == FULL_UP) || (argument->n == HALF_UP) ||
(argument->n == FULL_LEFT) || (argument->n == HALF_LEFT)) {
if ((page_offset + 1 >= value) &&
(page_offset < value + view_size)) {
new_value = page_offset - view_size;
} else if ((page_offset <= value) &&
(page_offset + page_size + 1 < value + view_size)) {
new_value = page_offset + page_size - view_size;
} else if ((page_offset <= value) &&
(page_offset > new_value)) {
new_value = page_offset;
}
}
}
zathura_adjustment_set_value(adjustment, new_value);
return false;
}
