Begin to draw sc_follow results

config.c

@@ -43,17 +43,21 @@ config_load_default(zathura_t* zathura)
   girara_setting_add(gsession, "zoom-step",     &int_value,   INT,   false, "Zoom step",               NULL, NULL);
   int_value = 1;
   girara_setting_add(gsession, "page-padding",  &int_value,   INT,   true,  "Padding between pages",   NULL, NULL);
-  int_value = 2;
+  int_value = 1;
   girara_setting_add(gsession, "pages-per-row", &int_value,   INT,   false, "Number of pages per row", cb_pages_per_row_value_changed, zathura);
   float_value = 40;
   girara_setting_add(gsession, "scroll-step",   &float_value, FLOAT, false, "Scroll step",             NULL, NULL);
 
-
   string_value = "#FFFFFF";
   girara_setting_add(gsession, "recolor-darkcolor",  string_value, STRING, false, "Recoloring (dark color)",  NULL, NULL);
   string_value = "#000000";
   girara_setting_add(gsession, "recolor-lightcolor", string_value, STRING, false, "Recoloring (light color)", NULL, NULL);
 
+  string_value = "#9FBC00";
+  girara_setting_add(gsession, "highlight-color",        string_value, STRING, false, "Color for highlighting",        NULL, NULL);
+  float_value = 0.5;
+  girara_setting_add(gsession, "highlight-transparency", &float_value, FLOAT,  false, "Transparency for highlighting", NULL, NULL);
+
   /* define default shortcuts */
   girara_shortcut_add(gsession, GDK_CONTROL_MASK, GDK_c,          NULL, sc_abort,                    0,                   0,               NULL);
   girara_shortcut_add(gsession, 0,                GDK_Escape,     NULL, sc_abort,                    0,                   0,               NULL);

render.c

@@ -298,7 +298,7 @@ page_expose_event(GtkWidget* UNUSED(widget), GdkEventExpose* UNUSED(event),
   if (page->surface != NULL) {
     cairo_save(cairo);
 
-    switch(page->document->rotate) {
+    switch (page->document->rotate) {
       case 90:
         cairo_translate(cairo, page_width, 0);
         break;

shortcuts.c

@@ -103,6 +103,63 @@ sc_follow(girara_session_t* session, girara_argument_t* UNUSED(argument),
     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;
+
+  if (zathura->document == NULL) {
+    return false;
+  }
+
+  char* font = girara_setting_get(session, "font");
+
+  float transparency = 0.5;
+  float* tmp = girara_setting_get(session, "highlight-transparency");
+  if (tmp != NULL) {
+    transparency = *tmp;
+    free(tmp);
+  }
+
+  unsigned int link_id = 0;
+  for (unsigned int page_id = 0; page_id < zathura->document->number_of_pages; page_id++) {
+    zathura_page_t* page = zathura->document->pages[page_id];
+    if (page == NULL) {
+      continue;
+    }
+
+    // TODO: is page visible?
+    girara_list_t* links = zathura_page_links_get(page);
+    if (links == NULL || girara_list_size(links) == 0) {
+      continue;
+    }
+
+    GIRARA_LIST_FOREACH(links, zathura_link_t*, iter, link)
+      cairo_t* cairo = gdk_cairo_create(page->drawing_area->window);
+      if (font != NULL) {
+        cairo_select_font_face(cairo, font, CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
+      }
+
+      zathura_rectangle_t position = recalc_rectangle(page, link->position);
+
+      /* draw text */
+      cairo_set_font_size(cairo, 10);
+      cairo_move_to(cairo, position.x1 + 1, position.y1 - 1);
+      char* link_number = g_strdup_printf("%i", ++link_id);
+      cairo_show_text(cairo, link_number);
+
+      /* draw rectangle */
+      GdkColor color = zathura->ui.colors.highlight_color;
+      cairo_set_source_rgba(cairo, color.red, color.green, color.blue, transparency);
+      cairo_rectangle(cairo, position.x1, position.y1, (position.x2 - position.x1), (position.y2 - position.y1));
+      cairo_fill(cairo);
+
+      cairo_destroy(cairo);
+
+    GIRARA_LIST_FOREACH_END(links, zathura_link_t*, iter, link);
+  }
+
+  if (font != NULL) {
+    free(font);
+  }
 
   return false;
 }

zathura.c

@@ -217,6 +217,12 @@ zathura_init(int argc, char* argv[])
     g_free(string_value);
   }
 
+  string_value = girara_setting_get(zathura->ui.session, "highlight-color");
+  if (string_value != NULL) {
+    gdk_color_parse(string_value, &(zathura->ui.colors.highlight_color));
+    g_free(string_value);
+  }
+
   /* database */
   zathura->database = zathura_db_init(zathura->config.data_dir);
   if (zathura->database == NULL) {

zathura.h

@@ -49,6 +49,7 @@ typedef struct zathura_s
     {
       GdkColor recolor_dark_color; /**> Dark color for recoloring */
       GdkColor recolor_light_color; /**> Light color for recoloring */
+      GdkColor highlight_color; /**> Color for highlighting */
     } colors;
 
     GtkWidget *page_view_alignment;