Squashed 'external/lunasvg/' changes from 585d61eef..f924651b8

f924651b8 Merge pull request #129 from lemirep/master
db27b7c0e Add missing cstdint include
b66e22402 Merge pull request #126 from m-carrasco/fix-null-ptr-arithmetic
a1edbff60 Merge pull request #125 from m-carrasco/fix-ub-memcpy
f595f7be3 Fix UB caused by null pointer arithmetic.
a854444e5 Fix UB caused by wrong call to memcpy.
b7e72fb37 Merge pull request #84 from seanharmer/master
4c16abf41 Merge pull request #123 from m-carrasco/fix-gradient-ub
4d51541c2 Fix undefined behavior caused by a domain error on an sqrt call.
d4a7080cf Merge pull request #1 from seanharmer/cmake_modernization
b08d7d03a Relax the cmake version and other improvements
33a458302 Modernize the cmake usage
4b2609c14 Add initial .gitignore

git-subtree-dir: external/lunasvg
git-subtree-split: f924651b85cac47dbe15f51a4aa320461fc1d07b

.gitignore

@@ -0,0 +1,2 @@
+.vscode
+build/*

3rdparty/plutovg/plutovg-blend.c

@@ -2,6 +2,7 @@
 
 #include <limits.h>
 #include <math.h>
+#include <float.h>
 
 #define COLOR_TABLE_SIZE 1024
 typedef struct {
@@ -243,6 +244,7 @@ static void fetch_radial_gradient(uint32_t* buffer, const radial_gradient_values
         while(buffer < end)
         {
             uint32_t result = 0;
+            det = fabs(det) < DBL_EPSILON ? 0.0 : det;
             if(det >= 0)
             {
                 double w = sqrt(det) - b;
@@ -261,7 +263,11 @@ static void fetch_radial_gradient(uint32_t* buffer, const radial_gradient_values
     {
         while(buffer < end)
         {
-            *buffer++ = gradient_pixel(gradient, sqrt(det) - b);
+            det = fabs(det) < DBL_EPSILON ? 0.0 : det;
+            uint32_t result = 0;
+            if (det >= 0)
+                result = gradient_pixel(gradient, sqrt(det) - b);
+            *buffer++ = result;
             det += delta_det;
             delta_det += delta_delta_det;
             b += delta_b;

3rdparty/plutovg/plutovg-ft-stroker.c

@@ -629,10 +629,12 @@ static void ft_stroke_border_export(PVG_FT_StrokeBorder border,
                                     PVG_FT_Outline*     outline)
 {
     /* copy point locations */
-    memcpy(outline->points + outline->n_points, border->points,
-           border->num_points * sizeof(PVG_FT_Vector));
+    if (outline->points != NULL && border->points != NULL)
+        memcpy(outline->points + outline->n_points, border->points,
+            border->num_points * sizeof(PVG_FT_Vector));
 
     /* copy tags */
+    if (outline->tags)
     {
         PVG_FT_UInt  count = border->num_points;
         PVG_FT_Byte* read = border->tags;
@@ -649,6 +651,7 @@ static void ft_stroke_border_export(PVG_FT_StrokeBorder border,
     }
 
     /* copy contours */
+    if (outline->contours)
     {
         PVG_FT_UInt   count = border->num_points;
         PVG_FT_Byte*  tags = border->tags;

3rdparty/plutovg/plutovg-rle.c

@@ -21,9 +21,13 @@ static void ft_outline_init(PVG_FT_Outline* outline, plutovg_t* pluto, int point
 
     PVG_FT_Byte* data = pluto->outline_data;
     outline->points = (PVG_FT_Vector*)(data);
-    outline->tags = (char*)(data + size_a);
-    outline->contours = (int*)(data + size_a + size_b);
-    outline->contours_flag = (char*)(data + size_a + size_b + size_c);
+    outline->tags = outline->contours_flag = NULL;
+    outline->contours = NULL;
+    if(data){
+        outline->tags = (char*)(data + size_a);
+        outline->contours = (int*)(data + size_a + size_b);
+        outline->contours_flag = (char*)(data + size_a + size_b + size_c);
+    }
     outline->n_points = 0;
     outline->n_contours = 0;
     outline->flags = 0x0;

CMakeLists.txt

@@ -1,10 +1,15 @@
-cmake_minimum_required(VERSION 3.3)
+cmake_minimum_required(VERSION 3.13)
 
 project(lunasvg VERSION 2.3.5 LANGUAGES CXX C)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_C_STANDARD 11)
 
+# Default to hidden visibility for symbols
+set(CMAKE_C_VISIBILITY_PRESET hidden)
+set(CMAKE_CXX_VISIBILITY_PRESET hidden)
+set(CMAKE_VISIBILITY_INLINES_HIDDEN 1)
+
 option(BUILD_SHARED_LIBS "Builds as shared library" OFF)
 option(LUNASVG_BUILD_EXAMPLES "Builds examples" OFF)
 
@@ -14,25 +19,61 @@ add_subdirectory(include)
 add_subdirectory(source)
 add_subdirectory(3rdparty/plutovg)
 
-if(BUILD_SHARED_LIBS)
-    target_compile_definitions(lunasvg PUBLIC LUNASVG_SHARED)
-    target_compile_definitions(lunasvg PRIVATE LUNASVG_EXPORT)
+set_target_properties(lunasvg
+    PROPERTIES
+    ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib"
+    LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib"
+    RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin"
+)
+
+add_library(lunasvg::lunasvg ALIAS lunasvg)
+
+if(NOT BUILD_SHARED_LIBS)
+    target_compile_definitions(lunasvg PUBLIC LUNASVG_STATIC_DEFINE)
 endif()
 
 if(LUNASVG_BUILD_EXAMPLES)
     add_subdirectory(example)
 endif()
 
-set(LUNASVG_LIBDIR ${CMAKE_INSTALL_PREFIX}/lib)
-set(LUNASVG_INCDIR ${CMAKE_INSTALL_PREFIX}/include)
+#
+# Installation
+#
+include(GNUInstallDirs)
+install(
+    FILES
+    ${CMAKE_CURRENT_SOURCE_DIR}/include/lunasvg.h
+    ${CMAKE_CURRENT_BINARY_DIR}/include/lunasvg_export.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/lunasvg
+)
+install(
+    TARGETS lunasvg
+    EXPORT lunasvg-targets
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+)
+install(
+    EXPORT lunasvg-targets
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/lunasvg NAMESPACE lunasvg:: FILE lunasvgTargets.cmake
+)
+
+include(CMakePackageConfigHelpers)
+configure_package_config_file(
+    ${CMAKE_CURRENT_SOURCE_DIR}/cmake/lunasvgConfig.cmake.in
+    ${CMAKE_CURRENT_BINARY_DIR}/lunasvgConfig.cmake
+    INSTALL_DESTINATION
+    ${CMAKE_INSTALL_LIBDIR}/cmake/lunasvg
+)
+
+write_basic_package_version_file(lunasvgConfigVersion.cmake
+    VERSION ${PROJECT_VERSION}
+    COMPATIBILITY SameMajorVersion
+)
 
 install(FILES
-    include/lunasvg.h
-    DESTINATION ${LUNASVG_INCDIR}
+    ${CMAKE_CURRENT_BINARY_DIR}/lunasvgConfig.cmake
+    ${CMAKE_CURRENT_BINARY_DIR}/lunasvgConfigVersion.cmake
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/lunasvg
 )
 
-install(TARGETS lunasvg
-    LIBRARY     DESTINATION    ${LUNASVG_LIBDIR}
-    ARCHIVE     DESTINATION    ${LUNASVG_LIBDIR}
-    INCLUDES    DESTINATION    ${LUNASVG_INCDIR}
-)
+export(EXPORT lunasvg-targets FILE ${CMAKE_CURRENT_BINARY_DIR}/lunasvgTargets.cmake NAMESPACE lunasvg::)

cmake/lunasvgConfig.cmake.in

@@ -0,0 +1,3 @@
+@PACKAGE_INIT@
+
+include("${CMAKE_CURRENT_LIST_DIR}/lunasvgTargets.cmake")

example/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.3)
+cmake_minimum_required(VERSION 3.13)
 
 set(CMAKE_CXX_STANDARD 14)
 

include/CMakeLists.txt

@@ -1,4 +1,16 @@
+# Generate a standard header with export macros
+include(GenerateExportHeader)
+generate_export_header(lunasvg)
+
 target_include_directories(lunasvg
-PUBLIC
-    "${CMAKE_CURRENT_LIST_DIR}"
+    # When building a project that uses the lunasvg library,
+    # we need to look in the installed include directory
+    PUBLIC
+    $<INSTALL_INTERFACE:include>
+
+    # When building the lunasvg library we need to look in the
+    # build dir for the lunasvg_export.h header and in the source
+    # dir for other headers
+    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
+    $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
 )

include/lunasvg.h

@@ -25,16 +25,10 @@
 
 #include <memory>
 #include <string>
+#include <cstdint>
 
-#if defined(_MSC_VER) && defined(LUNASVG_SHARED)
-#ifdef LUNASVG_EXPORT
-#define LUNASVG_API __declspec(dllexport)
-#else
-#define LUNASVG_API __declspec(dllimport)
-#endif
-#else
-#define LUNASVG_API
-#endif
+#include <lunasvg_export.h>
+#define LUNASVG_API LUNASVG_EXPORT
 
 namespace lunasvg {
 

source/property.h

@@ -4,6 +4,7 @@
 #include <vector>
 #include <string>
 #include <array>
+#include <cstdint>
 
 namespace lunasvg {