[librsvg: 33/53] Set the FcConfig on the pango FontMap

[Federico Mena Quintero <federico src gnome org>]

commit de3cee5e688ed0a831051a1701dd10a33c33edee
Author: Federico Mena Quintero <federico gnome org>
Date:   Wed Oct 21 18:57:08 2020 -0500

    Set the FcConfig on the pango FontMap

 Cargo.lock         | 20 ++++++++++++++++++++
 tests/Cargo.toml   |  2 ++
 tests/src/utils.rs | 19 ++++++++++++++++---
 3 files changed, 38 insertions(+), 3 deletions(-)
---
diff --git a/Cargo.lock b/Cargo.lock
index 612fc56d..4c2687be 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -181,6 +181,12 @@ dependencies = [
  "unicode-width",
 ]
 
+[[package]]
+name = "const-cstr"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index";
+checksum = "ed3d0b5ff30645a68f35ece8cea4556ca14ef8a1651455f789a099a0513532a6"
+
 [[package]]
 name = "crc32fast"
 version = "1.2.0"
@@ -785,9 +791,11 @@ dependencies = [
  "chrono",
  "float-cmp",
  "glib",
+ "libc",
  "librsvg",
  "lopdf",
  "pango",
+ "pango-sys",
  "pangocairo",
  "pkg-config",
  "png",
@@ -795,6 +803,7 @@ dependencies = [
  "rsvg_internals",
  "tempfile",
  "test-generator",
+ "yeslogic-fontconfig-sys",
 ]
 
 [[package]]
@@ -2100,3 +2109,14 @@ dependencies = [
  "markup5ever",
  "time",
 ]
+
+[[package]]
+name = "yeslogic-fontconfig-sys"
+version = "2.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index";
+checksum = "e194a0c5cd1b5c87215eed9d26aca9799fa1b599fe2e178977d6f8ccc812e3d3"
+dependencies = [
+ "const-cstr",
+ "libc",
+ "pkg-config",
+]
diff --git a/tests/Cargo.toml b/tests/Cargo.toml
index 2a45fedb..1dd80146 100644
--- a/tests/Cargo.toml
+++ b/tests/Cargo.toml
@@ -13,9 +13,11 @@ cast = "0.2.3"
 chrono = "0.4.0"
 float-cmp = "0.8.0"
 glib = "0.9.0"
+libc = "0.2"
 librsvg = { path = "../librsvg_crate" }
 lopdf = "0.25.0"
 pango = "0.8.0"
+pango-sys = "0.9.0"
 pangocairo = "0.9.0"
 png = "0.16.1"
 predicates = "1.0.2"
diff --git a/tests/src/utils.rs b/tests/src/utils.rs
index ccb9caf4..91b8d1fb 100644
--- a/tests/src/utils.rs
+++ b/tests/src/utils.rs
@@ -1,5 +1,7 @@
 #![cfg(test)]
 
+use glib::translate::*;
+use libc;
 use std::env;
 use std::path::PathBuf;
 
@@ -48,14 +50,25 @@ pub fn setup_font_map() {
         };
     }
 
-    let font_map = FontMap::new_for_font_type(cairo::FontType::FontTypeFt);
+    let font_map = FontMap::new_for_font_type(cairo::FontType::FontTypeFt).unwrap();
+    let raw_font_map: *mut pango_sys::PangoFontMap = font_map.to_glib_none().0;
+
+    extern "C" {
+        // pango_fc_font_map_set_config (PangoFcFontMap *fcfontmap,
+       //                               FcConfig       *fcconfig);
+        // This is not bound in gtk-rs, and PangoFcFontMap is not even exposed, so we'll bind it by hand.
+        fn pango_fc_font_map_set_config(
+            font_map: *mut libc::c_void,
+            config: *mut fontconfig::FcConfig,
+        );
+    }
 
-    // TODO: apply config
     unsafe {
+        pango_fc_font_map_set_config (raw_font_map as *mut _, config);
         fontconfig::FcConfigDestroy(config);
     };
 
-    FontMap::set_default(font_map.map(|m| m.downcast::<pangocairo::FontMap>().unwrap()));
+    FontMap::set_default(Some(font_map.downcast::<pangocairo::FontMap>().unwrap()));
 }
 
 #[cfg(not(have_pangoft2))]