Add basic window example

Change-Id: I5b729a1903aae656a483785d62ba6b43514b6949
Reviewed-on: https://codereview.kdab.com/c/kdab/kdutils/+/135718
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>
Tested-by: Continuous Integration <build@kdab.com>

CMakeLists.txt

@@ -1,6 +1,6 @@
 # This file is part of KDUtils.
 #
-# SPDX-FileCopyrightText: 2021-2023 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
+# SPDX-FileCopyrightText: 2021-2024 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
 # Author: Paul Lemire <paul.lemire@kdab.com>
 #
 # SPDX-License-Identifier: MIT
@@ -40,6 +40,8 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 cmake_policy(SET CMP0090 NEW) # Stop export(PACKAGE) from modifying the system-wide cmake package system
 cmake_policy(SET CMP0117 NEW) # Do not add /GR to CMAKE_CXX_FLAGS
 
+option(KDUTILS_BUILD_EXAMPLES "Build examples" ON)
+
 include(FeatureSummary)
 include(CMakeDependentOption)
 include(cmake/dependencies.cmake)
@@ -59,6 +61,10 @@ add_subdirectory(src/KDUtils)
 add_subdirectory(src/KDFoundation)
 add_subdirectory(src/KDGui)
 
+if(KDUTILS_BUILD_EXAMPLES)
+    add_subdirectory(examples)
+endif()
+
 if(KDUTILS_BUILD_TESTS)
     enable_testing()
     add_subdirectory(tests)

examples/CMakeLists.txt

@@ -0,0 +1,9 @@
+# This file is part of KDUtils.
+#
+# SPDX-FileCopyrightText: 2022-2024 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
+#
+# SPDX-License-Identifier: MIT
+#
+# Contact KDAB at <info@kdab.com> for commercial licensing options.
+
+add_subdirectory(gui_window)

examples/gui_window/CMakeLists.txt

@@ -0,0 +1,18 @@
+# This file is part of KDUtils.
+#
+# SPDX-FileCopyrightText: 2022-2024 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
+#
+# SPDX-License-Identifier: MIT
+#
+# Contact KDAB at <info@kdab.com> for commercial licensing options.
+
+project(gui_window_example LANGUAGES CXX)
+
+add_executable(
+    ${PROJECT_NAME}
+    gui_window.cpp
+)
+
+target_link_libraries(
+    ${PROJECT_NAME} KDGui
+)

examples/gui_window/gui_window.cpp

@@ -0,0 +1,78 @@
+/*
+  This file is part of KDUtils.
+
+  SPDX-FileCopyrightText: 2018-2024 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
+  Author: Miłosz Kosobucki <milosz.kosobucki@kdab.com>
+
+  SPDX-License-Identifier: MIT
+
+  Contact KDAB at <info@kdab.com> for commercial licensing options.
+*/
+#include <KDGui/gui_application.h>
+#include <KDGui/window.h>
+#include <KDGui/gui_events.h>
+
+class ExampleWindow : public KDGui::Window
+{
+    void mouseMoveEvent(KDGui::MouseMoveEvent *ev) override
+    {
+        spdlog::info("{}() buttons = {} at pos = ({}, {})",
+                     __FUNCTION__,
+                     ev->buttons(),
+                     ev->xPos(),
+                     ev->yPos());
+    }
+
+    void mousePressEvent(KDGui::MousePressEvent *ev) override
+    {
+        spdlog::info("{}() buttons = {} at pos = ({}, {})",
+                     __FUNCTION__,
+                     ev->buttons(),
+                     ev->xPos(),
+                     ev->yPos());
+    }
+
+    void mouseReleaseEvent(KDGui::MouseReleaseEvent *ev) override
+    {
+        spdlog::info("{}() buttons = {} at pos = ({}, {})",
+                     __FUNCTION__,
+                     ev->buttons(),
+                     ev->xPos(),
+                     ev->yPos());
+    }
+
+    void mouseWheelEvent(KDGui::MouseWheelEvent *ev) override
+    {
+        spdlog::info("{}() xDelta = {} yDelta = {}",
+                     __FUNCTION__,
+                     ev->xDelta(),
+                     ev->yDelta());
+    }
+
+    void keyPressEvent(KDGui::KeyPressEvent *ev) override
+    {
+        spdlog::info("{}() key = {}", __FUNCTION__, ev->key());
+    }
+
+    void keyReleaseEvent(KDGui::KeyReleaseEvent *ev) override
+    {
+        spdlog::info("{}() key = {}", __FUNCTION__, ev->key());
+    }
+};
+
+int main()
+{
+    KDGui::GuiApplication app;
+
+    ExampleWindow w;
+    w.title = "KDGui window example";
+    w.visible = true;
+
+    w.visible.valueChanged().connect([&app](bool visible) {
+        if (!visible) {
+            app.quit();
+        }
+    });
+
+    app.exec();
+}