From 5571f4a03d10d590c0d0d0e64b9e210d0752a44e Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Sat, 7 Oct 2023 09:34:00 +0800
Subject: Start migrating cairo for emsripten.

---
 .editorconfig                              |  6 +++++-
 CMakeLists.txt                             |  3 ++-
 scripts/cmake/cairo.cmake                  | 22 ++++++++++-----------
 src/platform/CMakeLists.txt                |  1 +
 src/platform/graphics/cairo/CMakeLists.txt | 31 ++++++++++++++++++------------
 5 files changed, 38 insertions(+), 25 deletions(-)

diff --git a/.editorconfig b/.editorconfig
index 345d6884..5fb29bf4 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -16,6 +16,10 @@ indent_size = 2
 indent_style = space
 indent_size = 2
 
-[*.cmake, CMakeLists.txt]
+[*.cmake]
+indent_style = tab
+indent_size = 4
+
+[CMakeLists.txt]
 indent_style = tab
 indent_size = 4
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8b777728..ca73ada3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -47,9 +47,10 @@ function(target_add_resources target res_dir)
 	endforeach(RES_FILE)
 endfunction()
 
+include(scripts/cmake/cairo.cmake)
+
 add_subdirectory(src)
 add_subdirectory(test)
 add_subdirectory(demos)
 
-include(scripts/cmake/cairo.cmake)
 
diff --git a/scripts/cmake/cairo.cmake b/scripts/cmake/cairo.cmake
index 64de7318..88836222 100644
--- a/scripts/cmake/cairo.cmake
+++ b/scripts/cmake/cairo.cmake
@@ -7,19 +7,19 @@ set(CAIRO_INSTALL_DIR ${CMAKE_BINARY_DIR}/cairo/install)
 set(CAIRO_MESON_SETUP meson setup ${CAIRO_BUILD_DIR} --prefix=${CAIRO_INSTALL_DIR})
 
 if(EMSCRIPTEN)
-    cmake_path(GET CMAKE_C_COMPILER PARENT_PATH EMSCRIPTEN_TOOLCHAIN)
-    set(EMSCRIPTEN_CROSS_FILE_TEMPLATE ${PROJECT_SOURCE_DIR}/scripts/meson-emscripten.ini.in)
-    set(EMSCRIPTEN_CROSS_FILE ${CAIRO_BUILD_DIR}/emscripten.ini)
-    configure_file(${EMSCRIPTEN_CROSS_FILE_TEMPLATE} ${EMSCRIPTEN_CROSS_FILE})
-    set(CAIRO_MESON_SETUP ${CAIRO_MESON_SETUP} --cross-file ${EMSCRIPTEN_CROSS_FILE})
+	cmake_path(GET CMAKE_C_COMPILER PARENT_PATH EMSCRIPTEN_TOOLCHAIN)
+	set(EMSCRIPTEN_CROSS_FILE_TEMPLATE ${PROJECT_SOURCE_DIR}/scripts/meson-emscripten.ini.in)
+	set(EMSCRIPTEN_CROSS_FILE ${CAIRO_BUILD_DIR}/emscripten.ini)
+	configure_file(${EMSCRIPTEN_CROSS_FILE_TEMPLATE} ${EMSCRIPTEN_CROSS_FILE})
+	set(CAIRO_MESON_SETUP ${CAIRO_MESON_SETUP} --cross-file ${EMSCRIPTEN_CROSS_FILE})
 endif()
 
 add_custom_target(
-    cairo-build
-    COMMAND mkdir -p ${CAIRO_BUILD_DIR} ${CAIRO_INSTALL_DIR}
-    COMMAND ${CAIRO_MESON_SETUP}
-    COMMAND ninja -C ${CAIRO_BUILD_DIR}
-    COMMAND ninja -C ${CAIRO_BUILD_DIR} install
-    WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/lib/cairo
+	cairo-build
+	COMMAND mkdir -p ${CAIRO_BUILD_DIR} ${CAIRO_INSTALL_DIR}
+	COMMAND ${CAIRO_MESON_SETUP}
+	COMMAND ninja -C ${CAIRO_BUILD_DIR}
+	COMMAND ninja -C ${CAIRO_BUILD_DIR} install
+	WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/lib/cairo
 )
 
diff --git a/src/platform/CMakeLists.txt b/src/platform/CMakeLists.txt
index 0a94a26e..c1b08c2f 100644
--- a/src/platform/CMakeLists.txt
+++ b/src/platform/CMakeLists.txt
@@ -20,6 +20,7 @@ elseif (APPLE)
 	add_subdirectory(gui/osx)
 elseif (EMSCRIPTEN)
 	add_subdirectory(web)
+	add_subdirectory(graphics/cairo)
 	add_subdirectory(graphics/web_canvas)
 endif()
 
diff --git a/src/platform/graphics/cairo/CMakeLists.txt b/src/platform/graphics/cairo/CMakeLists.txt
index 5879e01c..73b18499 100644
--- a/src/platform/graphics/cairo/CMakeLists.txt
+++ b/src/platform/graphics/cairo/CMakeLists.txt
@@ -1,3 +1,16 @@
+add_library(CruPlatformGraphicsCairo
+	Base.cpp
+	CairoBrush.cpp
+	CairoGeometry.cpp
+	CairoGraphicsFactory.cpp
+	CairoImage.cpp
+	CairoImageFactory.cpp
+	CairoPainter.cpp
+	CairoResource.cpp
+	PangoFont.cpp
+	PangoTextLayout.cpp
+)
+
 if (UNIX AND NOT EMSCRIPTEN) # It's so great to see emscripten is somewhat UNIX!
 	foreach(PP IN LISTS CMAKE_SYSTEM_PREFIX_PATH)
 		cmake_path(APPEND PP "lib" ${CMAKE_LIBRARY_ARCHITECTURE})
@@ -16,19 +29,13 @@ if (UNIX AND NOT EMSCRIPTEN) # It's so great to see emscripten is somewhat UNIX!
 
 	find_library(LIB_PNG png REQUIRED)
 	
-	add_library(CruPlatformGraphicsCairo
-	    Base.cpp
-		CairoBrush.cpp
-		CairoGeometry.cpp
-		CairoGraphicsFactory.cpp
-		CairoImage.cpp
-		CairoImageFactory.cpp
-		CairoPainter.cpp
-		CairoResource.cpp
-		PangoFont.cpp
-		PangoTextLayout.cpp
-	)
 	target_compile_definitions(CruPlatformGraphicsCairo PRIVATE CRU_PLATFORM_GRAPHICS_CAIRO_EXPORT_API)
 	target_link_libraries(CruPlatformGraphicsCairo PUBLIC CruPlatformGraphics PUBLIC ${LIB_GOBJECT} ${LIB_CAIRO} ${LIB_PANGO} ${LIB_PANGOCAIRO} ${LIB_PNG})
 	target_include_directories(CruPlatformGraphicsCairo PUBLIC ${CAIRO_HEADER_DIR} ${GLIB_HEADER_DIR} ${GLIBCONFIG_HEADER_DIR} ${HARFBUZZ_HEADER_DIR} ${PANGO_HEADER_DIR})
 endif()
+
+if (EMSCRIPTEN)
+	add_dependencies(CruPlatformGraphicsCairo cairo-build)
+	target_link_libraries(CruPlatformGraphicsCairo PUBLIC CruPlatformGraphics PUBLIC ${CAIRO_INSTALL_DIR}/lib/libcairo.a)
+	target_include_directories(CruPlatformGraphicsCairo PUBLIC ${CAIRO_INSTALL_DIR}/include)
+endif()
-- 
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