Add skia.

.gitmodules

@@ -4,3 +4,6 @@
 [submodule "external/googletest"]
 	path = external/googletest
 	url = https://github.com/google/googletest.git
+[submodule "external/skia"]
+	path = external/skia
+	url = https://skia.googlesource.com/skia.git

BUILDS/BUILD.skia

+
+cc_import(
+    name = "skia_public",
+    hdrs = glob(["include/**/*.h"]),
+    shared_library = "lib/libskia.so",
+    visibility = ["//visibility:public"],
+)

WORKSPACE.bazel

 workspace(name = "IMGRender")
 
-local_repository(
-    name = "skia",
-    path = "./external/skia"
-)
-
 # Google test for unittest purposes
 local_repository(
     name = "gtest",
@@ -18,4 +13,9 @@ new_local_repository(
     build_file = "BUILDS/BUILD.theft"
 )
 
-
+# Skia library
+new_local_repository(
+    name = "skia",
+    path = "./external/build/skia",
+    build_file = "BUILDS/BUILD.skia"
+)

skia @ f905f5fd

+Subproject commit f905f5fd8a0634968ed2cf148366cb4f9d47d187

prepare.sh

@@ -3,9 +3,39 @@
 set -euxo pipefail
 
 WORKPATH=$(cd $(dirname $0); pwd)
+EXTERNAL_DIR=${WORKPATH}/external
 
-SKIA_PATH=${WORKPATH}/external/skia
+SKIA_PATH=${EXTERNAL_DIR}/skia
+EXTERNAL_BUILD_DIR=${EXTERNAL_DIR}/build
+
+if [ ! -d "${EXTERNAL_BUILD_DIR}" ]; then
+    mkdir ${EXTERNAL_BUILD_DIR}
+fi
 
 # Build skia
+SKIA_BUILD_DIR=${EXTERNAL_BUILD_DIR}/skia
+
 cd $SKIA_PATH
-bazel build //:skia_public
+python3 tools/git-sync-deps
+bin/gn gen out/Shared --args='is_official_build=true is_component_build=true skia_use_system_harfbuzz=false'
+ninja -C out/Shared
+
+
+if [ ! -d "${SKIA_BUILD_DIR}" ]; then
+    mkdir ${SKIA_BUILD_DIR}
+    mkdir ${SKIA_BUILD_DIR}/include
+    mkdir ${SKIA_BUILD_DIR}/lib
+else
+    rm -rf ${SKIA_BUILD_DIR}/include/*
+    rm -rf ${SKIA_BUILD_DIR}/lib/*
+fi
+
+cp out/Shared/*.so ${SKIA_BUILD_DIR}/lib
+cp -r include ${SKIA_BUILD_DIR}/
+
+cd $SKIA_BUILD_DIR
+builds=$(find . | grep bazel | xargs)
+
+if [ ! -z "$builds" ]; then
+   rm $builds
+fi

src/BUILD.bazel

@@ -3,7 +3,8 @@ cc_library(
     name = "render",
     srcs = ["canvas.cc"],
     hdrs = ["canvas.h"],
-    #deps = ["@skia//:skia_public"],
+    deps = ["@skia//:skia_public"],
+    copts = ["-I./external/build/skia/", "-std=c++2a"],
     visibility = [
       "//app:__pkg__",
       "//tests:__pkg__"

src/canvas.cc

 #include <stdio.h>
+#include "include/core/SkCanvas.h"
 
 int say(void) {
-    printf("Hello,World\n");
+    SkCanvas canvas = SkCanvas();
     return 0;
 }

tests/BUILD.bazel

@@ -5,6 +5,7 @@ cc_test(
     name = "check",
     srcs = ["check.cc"],
     args = ["/home"],
+    copts = ["-I./src"],
     deps = [
         "//src:render",
         "@theft//:theft",

tests/check.cc

@@ -6,14 +6,6 @@ extern "C" {
 }
 
 // Tests factorial of 0.
-TEST(FactorialTest, HandlesZeroInput) {
-  EXPECT_EQ(1, 1);
-}
-
-// Tests factorial of positive numbers.
-TEST(FactorialTest, HandlesPositiveInput) {
-  EXPECT_EQ(1, 1);
-  EXPECT_EQ(2, 2);
-  EXPECT_EQ(6, 6);
-  EXPECT_EQ(40320, 40320);
+TEST(Say, SayNothing) {
+  EXPECT_EQ(say(), 0);
 }