[qt] Skip ICU if WITH_QT_I18N is set

3 files changed, 67 insertions, 3 deletions

diff --git a/platform/qt/config.cmake b/platform/qt/config.cmake
index f6b7d509f8..f2beedcfa2 100644
--- a/platform/qt/config.cmake
+++ b/platform/qt/config.cmake
@@ -2,7 +2,6 @@ include(platform/qt/qt.cmake)
 
 mason_use(sqlite VERSION 3.14.2)
 mason_use(gtest VERSION 1.7.0${MASON_CXXABI_SUFFIX})
-mason_use(icu VERSION 58.1)
 
 if(NOT WITH_QT_DECODERS)
     mason_use(libjpeg-turbo VERSION 1.5.0)
@@ -10,6 +9,10 @@ if(NOT WITH_QT_DECODERS)
     mason_use(webp VERSION 0.5.1)
 endif()
 
+if(NOT WITH_QT_I18N)
+    mason_use(icu VERSION 58.1)
+endif()
+
 macro(mbgl_platform_core)
     target_sources(mbgl-core
         ${MBGL_QT_FILES}
@@ -40,7 +43,12 @@ macro(mbgl_platform_core)
         add_definitions(-DQT_IMAGE_DECODERS)
     endif()
 
-    target_add_mason_package(mbgl-core PRIVATE icu)
+    if(NOT WITH_QT_I18N)
+        target_sources(mbgl-core PRIVATE platform/default/bidi.cpp)
+        target_add_mason_package(mbgl-core PRIVATE icu)
+    else()
+        target_sources(mbgl-core PRIVATE platform/qt/src/bidi.cpp)
+    endif()
 
 endmacro()
 
diff --git a/platform/qt/qt.cmake b/platform/qt/qt.cmake
index c640ca5689..2950e1fb15 100644
--- a/platform/qt/qt.cmake
+++ b/platform/qt/qt.cmake
@@ -2,6 +2,7 @@
 # support `mason` (i.e. Yocto). Do not add any `mason` macro.
 
 option(WITH_QT_DECODERS "Use builtin Qt image decoders" OFF)
+option(WITH_QT_I18N     "Use builtin Qt i18n support"   OFF)
 option(WITH_QT_4        "Use Qt4 instead of Qt5"        OFF)
 
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden -D__QT__")
@@ -29,7 +30,6 @@ set(MBGL_QT_FILES
 
     # Misc
     PRIVATE platform/default/logging_stderr.cpp
-    PRIVATE platform/default/bidi.cpp
 
     # Thread pool
     PRIVATE platform/default/mbgl/util/default_thread_pool.cpp
diff --git a/platform/qt/src/bidi.cpp b/platform/qt/src/bidi.cpp
new file mode 100644
index 0000000000..99f09e8ef8
--- /dev/null
+++ b/platform/qt/src/bidi.cpp
@@ -0,0 +1,56 @@
+#include <memory>
+
+#include <mbgl/text/bidi.hpp>
+
+#include <QString>
+
+namespace mbgl {
+
+class BiDiImpl {
+public:
+    QString string;
+};
+
+std::u16string applyArabicShaping(const std::u16string& input) {
+    QString utf16string = QString::fromStdU16String(input);
+    return utf16string.toStdU16String();
+}
+
+ProcessedBiDiText::ProcessedBiDiText(BiDi& p_bidi) : bidi(p_bidi) {
+}
+
+void ProcessedBiDiText::mergeParagraphLineBreaks(std::set<int32_t>& lineBreakPoints) {
+    lineBreakPoints.insert(impl->string.length());
+}
+
+std::vector<std::u16string>
+ProcessedBiDiText::applyLineBreaking(std::set<int32_t> lineBreakPoints) {
+    mergeParagraphLineBreaks(lineBreakPoints);
+
+    std::vector<std::u16string> transformedLines;
+    int32_t start = 0;
+    for (int32_t lineBreakPoint : lineBreakPoints) {
+        transformedLines.push_back(bidi.getLine(start, lineBreakPoint));
+        start = lineBreakPoint;
+    }
+
+    return transformedLines;
+}
+
+BiDi::BiDi() : impl(std::make_unique<BiDiImpl>())
+{
+}
+
+BiDi::~BiDi() {
+}
+
+ProcessedBiDiText BiDi::processText(const std::u16string& input) {
+    impl->string = QString::fromStdU16String(input);
+    return ProcessedBiDiText(*this);
+}
+
+std::u16string BiDi::getLine(int32_t start, int32_t end) {
+    return impl->string.mid(start, end - start).toStdU16String();
+}
+
+} // end namespace mbgl