Example: remove map example

This example only demonstrates the use of blockingMapped. Considering
that the QtConcurrent::mapped~ functions are already included in the
wordcount example, and have very similar APIs to the
QtConcurrent::filter~ functions, which are included in the
progressdialog example, this no longer serves a useful purpose.

Task-number: QTBUG-111165
Pick-to: 6.5 6.5.0
Change-Id: Ibc526e1a9fb17070e376e45151e9c2bdbc69bd32
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>

examples/qtconcurrent/CMakeLists.txt

@@ -1,4 +1,4 @@
-# Copyright (C) 2022 The Qt Company Ltd.
+# Copyright (C) 2023 The Qt Company Ltd.
 # SPDX-License-Identifier: BSD-3-Clause
 
 if(NOT TARGET Qt6::Concurrent)
@@ -10,6 +10,3 @@ if(TARGET Qt6::Widgets)
     qt_internal_add_example(runfunction)
     qt_internal_add_example(wordcount)
 endif()
-if(TARGET Qt6::Gui)
-    qt_internal_add_example(map)
-endif()

examples/qtconcurrent/map/CMakeLists.txt

@@ -1,31 +0,0 @@
-# Copyright (C) 2022 The Qt Company Ltd.
-# SPDX-License-Identifier: BSD-3-Clause
-
-cmake_minimum_required(VERSION 3.16)
-project(mapdemo LANGUAGES CXX)
-
-if(NOT DEFINED INSTALL_EXAMPLESDIR)
-    set(INSTALL_EXAMPLESDIR "examples")
-endif()
-
-set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/qtconcurrent/map")
-
-find_package(Qt6 REQUIRED COMPONENTS Concurrent Core Gui)
-
-qt_standard_project_setup()
-
-qt_add_executable(mapdemo
-    main.cpp
-)
-
-target_link_libraries(mapdemo PRIVATE
-    Qt6::Concurrent
-    Qt6::Core
-    Qt6::Gui
-)
-
-install(TARGETS mapdemo
-    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
-    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
-    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
-)

examples/qtconcurrent/map/doc/src/qtconcurrent-map.qdoc

@@ -1,14 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
-
-/*!
-    \example map
-    \title Map Example
-    \brief Demonstrates how to scale images synchronously.
-    \ingroup qtconcurrentexamples
-
-    The QtConcurrent Map example shows how to use the synchronous (blocking)
-    QtConcurrent API to scale a collection of images.
-
-    This is a command-line application.
-*/

examples/qtconcurrent/map/main.cpp

@@ -1,35 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#include <QImage>
-#include <QList>
-#include <QThread>
-#include <QDebug>
-#include <QGuiApplication>
-#include <qtconcurrentmap.h>
-
-#include <functional>
-
-int main(int argc, char *argv[])
-{
-    QGuiApplication app(argc, argv);
-
-    const int imageCount = 20;
-
-    // Create a list containing imageCount images.
-    QList<QImage> images;
-    for (int i = 0; i < imageCount; ++i)
-        images.append(QImage(1600, 1200, QImage::Format_ARGB32_Premultiplied));
-
-    std::function<QImage(const QImage&)> scale = [](const QImage &image) -> QImage
-    {
-        qDebug() << "Scaling image in thread" << QThread::currentThread();
-        return image.scaled(QSize(100, 100), Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
-    };
-
-    // Use QtConcurrentBlocking::mapped to apply the scale function to all the
-    // images in the list.
-    QList<QImage> thumbnails = QtConcurrent::blockingMapped(images, scale);
-
-    return 0;
-}

examples/qtconcurrent/map/map.pro

@@ -1,9 +0,0 @@
-TEMPLATE = app
-TARGET = mapdemo
-QT += concurrent
-CONFIG += cmdline
-
-SOURCES += main.cpp
-
-target.path = $$[QT_INSTALL_EXAMPLES]/qtconcurrent/map
-INSTALLS += target

examples/qtconcurrent/qtconcurrent.pro

@@ -2,17 +2,10 @@ requires(qtHaveModule(concurrent))
 
 TEMPLATE      = subdirs
 SUBDIRS       = imagescaling \
-                map \
                 progressdialog \
                 runfunction \
                 wordcount
 
-
-!qtHaveModule(gui) {
-    SUBDIRS -= \
-        map
-}
-
 !qtHaveModule(widgets) {
     SUBDIRS -= \
         imagescaling \