Add backend functions support

Author: SerafimArts

modules/boson/CMakeLists.txt

@@ -15,8 +15,22 @@ target_include_directories(${MODULE_NAME} PRIVATE "include/saucer")
 # Add Sources
 # --------------------------------------------------------------------------------------------------------
 
-add_compile_definitions(BOSON_VERSION="0.6.0")
+if (saucer_backend STREQUAL "Default")
+    if (WIN32)
+        set(saucer_backend WebView2)
+    elseif (APPLE)
+        set(saucer_backend WebKit)
+    else()
+        set(saucer_backend WebKitGtk)
+    endif()
+
+    saucer_message(STATUS "Backend is 'Default', using ${saucer_backend}")
+endif()
+
+add_compile_definitions(BOSON_VERSION=0.6.0)
+add_compile_definitions(SAUCER_BACKEND=${saucer_backend})
 
 target_sources(${MODULE_NAME} PRIVATE
     "src/boson.cpp"
+    "src/desktop_extensions.cpp"
 )

modules/boson/include/saucer/boson.h

@@ -7,7 +7,22 @@ extern "C"
 
 #include "export.h"
 
-    BOSON_EXPORT const char* boson_version();
+    enum boson_backend
+    {
+        BOSON_BACKEND_WEBVIEW2,
+        BOSON_BACKEND_WEBKIT,
+        BOSON_BACKEND_WEBKIT_GTK,
+        BOSON_BACKEND_QT,
+        BOSON_BACKEND_UNKNOWN = -1,
+
+        BOSON_BACKEND_LAST = BOSON_BACKEND_QT,
+    };
+
+    BOSON_EXPORT extern const char* boson_version(void);
+
+    BOSON_EXPORT extern boson_backend boson_get_backend(void);
+    BOSON_EXPORT extern const char* boson_get_backend_str(void);
+
 
 #ifdef __cplusplus
 }

modules/boson/include/saucer/desktop_extensions.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include "export.h"
+
+    BOSON_EXPORT extern int boson_error_code_canceled();
+
+#ifdef __cplusplus
+}
+#endif

modules/boson/src/boson.cpp

@@ -1,16 +1,48 @@
 #include "boson.h"
 
+#include <string.h>
+
 #define BOSON_STRING(value) #value
 #define BOSON_STRING_EXPAND(value) BOSON_STRING(value)
 
+#ifndef BOSON_VERSION
+    #define BOSON_VERSION master
+#endif
+
+#ifndef SAUCER_BACKEND
+    #define SAUCER_BACKEND Default
+#endif
+
+
 extern "C"
 {
-    const char* boson_version()
+    const char* boson_version(void)
     {
-        #ifndef BOSON_VERSION
-            #define unknown-dev
-        #endif
-
         return BOSON_STRING_EXPAND(BOSON_VERSION) "";
     }
+
+    const char* boson_get_backend_str(void)
+    {
+        return BOSON_STRING_EXPAND(SAUCER_BACKEND) "";
+    }
+
+    boson_backend boson_get_backend(void)
+    {
+        const char* boson_backend_str = BOSON_STRING_EXPAND(SAUCER_BACKEND) "";
+
+        if (strcmp(boson_backend_str, "WebView2") == 0) {
+            return boson_backend::BOSON_BACKEND_WEBVIEW2;
+        }
+        else if (strcmp(boson_backend_str, "WebKit") == 0) {
+            return boson_backend::BOSON_BACKEND_WEBKIT;
+        }
+        else if (strcmp(boson_backend_str, "WebKitGtk") == 0) {
+            return boson_backend::BOSON_BACKEND_WEBKIT_GTK;
+        }
+        else if (strcmp(boson_backend_str, "Qt") == 0) {
+            return boson_backend::BOSON_BACKEND_QT;
+        }
+
+        return boson_backend::BOSON_BACKEND_UNKNOWN;
+    }
 }

modules/boson/src/desktop_extensions.cpp

@@ -0,0 +1,13 @@
+#include "desktop_extensions.h"
+
+#include <system_error>
+
+extern "C"
+{
+
+    int boson_error_code_canceled(void)
+    {
+        return static_cast<int>(std::errc::operation_canceled);
+    }
+
+}