Qt6

.github/workflows/cmake.yml

@@ -3,6 +3,8 @@ name: CMake
 on:
   push:
     branches:
+      - master
+      - devel
       - cmake
       - svgscene
       - rv-core
@@ -26,6 +28,12 @@ jobs:
             build_type: "Release",
             cc: "gcc", cxx: "g++", qt_version: "5.11.2"
           }
+          - {
+            name: "Ubuntu Latest GCC + Qt6",
+            os: ubuntu-latest,
+            build_type: "Release",
+            cc: "gcc", cxx: "g++", qt_version: "6.2.1"
+          }
           - {
             name: "Ubuntu 18 GCC",
             os: ubuntu-18.04,

CMakeLists.txt

@@ -165,12 +165,25 @@ if("${WASM}" OR "${FORCE_ELFLIB_STATIC}" OR NOT "${LibElf_FOUND}")
 	add_subdirectory("external/libelf")
 endif()
 
-find_package(Qt5
-             REQUIRED COMPONENTS Core Widgets Gui Test
-             OPTIONAL_COMPONENTS PrintSupport)
+# Detect Qt used qt version
+# Based on article https://www.steinzone.de/wordpress/how-to-support-both-qt5-and-qt6-using-cmake/
+# Cannot use version-less approach due to Qt 5.9.5 support constraint.
+find_package(OpenGL)
 
-message(STATUS "Qt5 version: ${Qt5Core_VERSION}")
-message(STATUS "Qt5 print support: ${Qt5PrintSupport_FOUND}")
+find_package(QT NAMES Qt6 Qt5 COMPONENTS Core REQUIRED)
+# Normally, we would use variable Qt5 or Qt6 to reference the Qt library. Here we do that through
+# this variable based on detected version major of Qt.
+set(QtLib "Qt${QT_VERSION_MAJOR}")
+find_package(${QtLib}
+		REQUIRED COMPONENTS Core Widgets Gui Test
+		OPTIONAL_COMPONENTS PrintSupport)
+
+message(STATUS "${QtLib} version: ${${QtLib}Core_VERSION}")
+message(STATUS "${QtLib} print support: ${${QtLib}PrintSupport_FOUND}")
+
+
+# Qt 5.9.5 is the oldest supported
+add_compile_definitions(QT_DISABLE_DEPRECATED_BEFORE=0x050905)
 
 add_subdirectory("external/svgscene")
 

external/svgscene/CMakeLists.txt

@@ -1,43 +1,48 @@
 cmake_minimum_required(VERSION 3.10)
 project(svgscene)
 
-find_package(Qt5
-        REQUIRED COMPONENTS Core Widgets Gui)
+
+find_package(QT NAMES Qt6 Qt5 COMPONENTS Core REQUIRED)
+# Normally, we would use variable Qt5 or Qt6 to reference the Qt library. Here we do that through
+# this variable based on detected version major of Qt.
+set(QtLib "Qt${QT_VERSION_MAJOR}")
+find_package(${QtLib}
+		REQUIRED COMPONENTS Core Widgets Gui)
 
 set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTORCC ON)
 set(CMAKE_AUTOUIC ON)
 
 add_library(svgscene STATIC
-        src/svgscene/components/groupitem.cpp
-        src/svgscene/components/groupitem.h
-        src/svgscene/components/hyperlinkitem.cpp
-        src/svgscene/components/hyperlinkitem.h
-        src/svgscene/components/simpletextitem.cpp
-        src/svgscene/components/simpletextitem.h
-        src/svgscene/graphicsview/svggraphicsview.cpp
-        src/svgscene/graphicsview/svggraphicsview.h
-        src/svgscene/svgdocument.cpp
-        src/svgscene/svgdocument.h
-        src/svgscene/svggraphicsscene.cpp
-        src/svgscene/svggraphicsscene.h
-        src/svgscene/svghandler.cpp
-        src/svgscene/svghandler.h
-        src/svgscene/svgmetadata.cpp
-        src/svgscene/svgmetadata.h
-        src/svgscene/svgspec.h
-        src/svgscene/utils/logging.h
-        src/svgscene/utils/memory_ownership.h
-        )
+		src/svgscene/components/groupitem.cpp
+		src/svgscene/components/groupitem.h
+		src/svgscene/components/hyperlinkitem.cpp
+		src/svgscene/components/hyperlinkitem.h
+		src/svgscene/components/simpletextitem.cpp
+		src/svgscene/components/simpletextitem.h
+		src/svgscene/graphicsview/svggraphicsview.cpp
+		src/svgscene/graphicsview/svggraphicsview.h
+		src/svgscene/svgdocument.cpp
+		src/svgscene/svgdocument.h
+		src/svgscene/svggraphicsscene.cpp
+		src/svgscene/svggraphicsscene.h
+		src/svgscene/svghandler.cpp
+		src/svgscene/svghandler.h
+		src/svgscene/svgmetadata.cpp
+		src/svgscene/svgmetadata.h
+		src/svgscene/svgspec.h
+		src/svgscene/utils/logging.h
+		src/svgscene/utils/memory_ownership.h
+		)
 target_link_libraries(svgscene
-        PRIVATE Qt5::Core Qt5::Gui Qt5::Widgets)
+		PRIVATE ${QtLib}::Core ${QtLib}::Gui ${QtLib}::Widgets)
 target_include_directories(svgscene PUBLIC src PRIVATE src/svgscene)
 
 add_executable(svgscene-example EXCLUDE_FROM_ALL
-        src/example/main.cpp
-        src/example/mainwindow.cpp
-        src/example/mainwindow.h
-               src/example/mainwindow.ui
-        )
+		src/example/main.cpp
+		src/example/mainwindow.cpp
+		src/example/mainwindow.h
+		src/example/mainwindow.ui
+		)
 target_link_libraries(svgscene-example
-        PRIVATE Qt5::Core Qt5::Gui Qt5::Widgets svgscene)
+		PRIVATE ${QtLib}::Core ${QtLib}::Gui ${QtLib}::Widgets svgscene)

external/svgscene/src/svgscene/graphicsview/svggraphicsview.cpp

@@ -36,7 +36,7 @@ void SvgGraphicsView::paintEvent(QPaintEvent *event) {
 }
 
 void SvgGraphicsView::wheelEvent(QWheelEvent *ev) {
-    if (ev->orientation() == Qt::Vertical) {
+    if (ev->angleDelta().y() != 0) { // vertical orientation
         if (ev->modifiers() == Qt::ControlModifier) {
             double delta = ev->angleDelta().y();
             zoom(delta / 10, ev->pos());

src/assembler/CMakeLists.txt

@@ -17,4 +17,4 @@ add_library(assembler STATIC
         ${assembler_SOURCES}
         ${assembler_HEADERS})
 target_link_libraries(assembler
-        PRIVATE Qt5::Core)
+		PRIVATE ${QtLib}::Core)

src/assembler/fixmatheval.cpp

@@ -184,7 +184,7 @@ bool FmeExpression::parse(const QString &expression, QString &error) {
     bool is_unary = true;
     QString optxtx;
     for (i = 0; true; i++) {
-        QChar ch = 0;
+        QChar ch {};
         if (i < expression.size()) {
             ch = expression.at(i);
         }

src/assembler/simpleasm.cpp

@@ -454,36 +454,56 @@ bool SimpleAsm::process_line(
             }
             s = s.mid(1, s.count() - 2);
             for (pos = 0; pos < s.count(); pos++) {
-                QChar ch = s.at(pos);
-                if (ch == '\\') {
-                    ch = 0;
-                    if (pos + 1 < s.count()) {
-                        switch (s.at(++pos).toLatin1()) {
-                        case '\\': ch = '\\'; break;
-                        case '0': ch = 0x00; break;
-                        case 'r': ch = 0x0d; break;
-                        case 'n': ch = 0x0a; break;
-                        case 't': ch = 0x09; break;
-                        case 'b': ch = 0x08; break;
-                        case '"': ch = '"'; break;
-                        default: ch = 0;
+                // target byte is in ASCII encoding
+                uint8_t target_byte = 0x00;
+
+                QChar host_char = s.at(pos);
+                if (host_char == '\\') {
+                    // if the host encoding recognizes this as a backslash (escape char)
+
+                    // handle end of the string check
+                    if (pos + 1 >= s.count()) {
+                        error = "ascii - invalid escape sequence at the end of the string";
+                        emit report_message(messagetype::MSG_ERROR, filename, line_number, 0, error, "");
+                        error_occured = true;
+                        if (error_ptr != nullptr) {
+                            *error_ptr = error;
                         }
+                        return false;
                     }
-                    if (ch == '\0') {
-                        error = "ascii - incorrect escape sequence";
-                        emit report_message(
-                            messagetype::MSG_ERROR, filename, line_number, 0,
-                            error, "");
+
+                    // compare the host_char in host encoding but emit byte in ASCII encoding
+                    host_char = s.at(++pos);
+                    if (host_char == '0') {
+                        target_byte = 0x00;
+                    } else if (host_char == 'b') {
+                        target_byte = 0x08;
+                    } else if (host_char == 't') {
+                        target_byte = 0x09;
+                    } else if (host_char == 'n') {
+                        target_byte = 0x0A;
+                    } else if (host_char == 'r') {
+                        target_byte = 0x0D;
+                    } else if (host_char == '"') {
+                        target_byte = 0x22;
+                    }  else if (host_char == '\\') {
+                        target_byte = 0x5C;
+                    } else {
+                        error = QString("ascii - incorrect escape sequence '\\") + host_char + "'";
+                        emit report_message(messagetype::MSG_ERROR, filename, line_number, 0, error, "");
                         error_occured = true;
                         if (error_ptr != nullptr) {
                             *error_ptr = error;
                         }
                         return false;
                     }
+                } else {
+                    // otherwise convert it to ASCII and write it as-is
+                    target_byte = host_char.toLatin1();
                 }
+
                 if (!fatal_occured) {
-                    mem->write_u8(
-                        address, (uint8_t)ch.toLatin1(), ae::INTERNAL);
+                    mem->write_u8(address, target_byte, ae::INTERNAL);
                 }
                 address += 1;
             }

src/cli/CMakeLists.txt

@@ -23,7 +23,7 @@ add_executable(cli
                ${cli_SOURCES}
                ${cli_HEADERS})
 target_link_libraries(cli
-                      PRIVATE Qt5::Core machine assembler)
+		PRIVATE ${QtLib}::Core machine assembler)
 target_compile_definitions(cli
                            PRIVATE
                            APP_ORGANIZATION=\"${MAIN_PROJECT_ORGANIZATION}\"

src/common/polyfills/CMakeLists.txt

@@ -1,14 +1,17 @@
 project(polyfills
-        DESCRIPTION "Helper code to unify access to compiler intrinsics and
+		DESCRIPTION "Helper code to unify access to compiler intrinsics and
                      provide fallback implementations.")
 
 set(polyfills_HEADERS
-        endian_detection.h
-        mulh64.h
-        clz32.h
-        byteswap.h
-        qstring_hash.h
-        )
+		endian_detection.h
+		mulh64.h
+		clz32.h
+		byteswap.h
+		qstring_hash.h
+		qt5/qfontmetrics.h
+		qt5/qlinef.h
+		qt5/qtableview.h
+		)
 
 # =============================================================================
 # Target for usage of this header library
@@ -26,12 +29,12 @@ if(NOT "${WASM}")
 	set(CMAKE_AUTOMOC ON)
 
 	add_executable(mulh64_test
-	               mulh64.h
-	               mulh64.test.h
-	               mulh64.test.cpp
-	               )
-	target_link_libraries(mulh64_test PRIVATE Qt5::Test)
+			mulh64.h
+			mulh64.test.h
+			mulh64.test.cpp
+			)
+	target_link_libraries(mulh64_test PRIVATE ${QtLib}::Test)
 	add_test(NAME mulh64
-	         COMMAND mulh64_test)
+			COMMAND mulh64_test)
 endif()
 

src/common/polyfills/qt5/qfontmetrics.h

@@ -0,0 +1,12 @@
+#ifndef POLYFILLS_QFONTMETRICS_H
+#define POLYFILLS_QFONTMETRICS_H
+
+int QFontMetrics_horizontalAdvance(const QFontMetrics &self, const QString &str, int len = -1) {
+#if QT_VERSION >= QT_VERSION_CHECK(5, 11, 0)
+    return self.horizontalAdvance(str, len);
+#else
+    return self.width(str, len);
+#endif
+}
+
+#endif // QTMIPS_QFONTMETRICS_H

src/common/polyfills/qt5/qlinef.h

@@ -0,0 +1,15 @@
+#ifndef POLYFILLS_QLINEF_H
+#define POLYFILLS_QLINEF_H
+
+#include <QLine>
+
+QLineF::IntersectType
+QLineF_intersect(const QLineF &l1, const QLineF &l2, QPointF *intersectionPoint) {
+#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
+    return l1.intersects(l2, intersectionPoint);
+#else
+    return l1.intersect(l2, intersectionPoint);
+#endif
+}
+
+#endif // QTMIPS_QLINEF_H

src/common/polyfills/qt5/qtableview.h

@@ -0,0 +1,23 @@
+#ifndef POLYFILLS_QTABLEVIEW_H
+#define POLYFILLS_QTABLEVIEW_H
+
+#include <QTableView>
+
+/**
+ * QTableView polyfill
+ *
+ * initViewItemOption is protected, therefore the whole class needs to be wrapped.
+ */
+class Poly_QTableView : public QTableView {
+public:
+    explicit Poly_QTableView(QWidget *parent) : QTableView(parent) {}
+
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
+protected:
+    void initViewItemOption(QStyleOptionViewItem *viewOpts) {
+        *viewOpts = QTableView::viewOptions();
+    }
+#endif
+};
+
+#endif // QTMIPS_QTABLEVIEW_H

src/gui/CMakeLists.txt

@@ -139,8 +139,8 @@ add_executable(gui
                ${gui_RESOURCES})
 target_include_directories(gui PUBLIC . coreview)
 target_link_libraries(gui
-                      PRIVATE Qt5::Core Qt5::Widgets Qt5::Gui
-                      PRIVATE machine os_emulation assembler svgscene)
+		PRIVATE ${QtLib}::Core ${QtLib}::Widgets ${QtLib}::Gui
+		PRIVATE machine os_emulation assembler svgscene)
 target_compile_definitions(gui
                            PRIVATE
                            APP_ORGANIZATION=\"${MAIN_PROJECT_ORGANIZATION}\"
@@ -152,9 +152,9 @@ target_compile_definitions(gui
 set_target_properties(gui PROPERTIES
                       OUTPUT_NAME "${MAIN_PROJECT_NAME_LOWER}_${PROJECT_NAME}")
 
-if(${Qt5PrintSupport_FOUND})
-    target_link_libraries(gui PRIVATE Qt5::PrintSupport)
-    target_compile_definitions(gui PRIVATE WITH_PRINTING=1)
+if(${${QtLib}PrintSupport_FOUND})
+	target_link_libraries(gui PRIVATE ${QtLib}::PrintSupport)
+	target_compile_definitions(gui PRIVATE WITH_PRINTING=1)
 endif()
 
 # MACOS