Add minimal vcl weld example application

The "minweld" is a minimal standalone vcl application that uses the
LibreOffice vcl weld framework to display the "tip of the day" dialog on
the screen. Upon clicking on the "Next Tip", a counter is incremented
and the text label containing its value is displayed/updated in the
center of the dialog box.

One can run the application by invoking:

./bin/run minweld

This example uses cui/ui/tipofthedaydialog.ui for the UI, but only uses
a few elements of it.

Change-Id: If304c60ddb262182cf23438ed1f83dba85e66391
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/176610
Reviewed-by: Hossein   <hossein@libreoffice.org>
Tested-by: Jenkins

4 files changed, 138 insertions, 0 deletions

diff --git a/Repository.mk b/Repository.mk
index a5772d7a155a..a263a235925a 100644
--- a/Repository.mk
+++ b/Repository.mk
@@ -77,6 +77,7 @@ $(eval $(call gb_Helper_register_executables,NONE, \
 	vcldemo \
 	svdemo \
 	minvcl \
+	minweld \
 	svptest \
 	tiledrendering \
 	mtfdemo \
diff --git a/vcl/Executable_minweld.mk b/vcl/Executable_minweld.mk
new file mode 100644
index 000000000000..ff11bbc2881f
--- /dev/null
+++ b/vcl/Executable_minweld.mk
@@ -0,0 +1,38 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+$(eval $(call gb_Executable_Executable,minweld))
+
+$(eval $(call gb_Executable_use_api,minweld,\
+    offapi \
+    udkapi \
+))
+
+$(eval $(call gb_Executable_set_include,minweld,\
+    $$(INCLUDE) \
+    -I$(SRCDIR)/vcl/inc \
+))
+
+$(eval $(call gb_Executable_use_libraries,minweld,\
+    tl \
+    sal \
+    vcl \
+    cppu \
+    cppuhelper \
+    comphelper \
+    i18nlangtag \
+    fwk \
+))
+
+$(eval $(call gb_Executable_add_exception_objects,minweld,\
+    vcl/workben/minweld \
+))
+
+# vim: set noet sw=4 ts=4:
diff --git a/vcl/Module_vcl.mk b/vcl/Module_vcl.mk
index a79262b1c757..0ef5ffe879bb 100644
--- a/vcl/Module_vcl.mk
+++ b/vcl/Module_vcl.mk
@@ -45,6 +45,7 @@ $(eval $(call gb_Module_add_targets,vcl,\
                 Executable_vcldemo \
                 Executable_svdemo \
                 Executable_minvcl \
+                Executable_minweld \
                 Executable_svptest \
                 Executable_icontest \
                 Executable_visualbackendtest \
diff --git a/vcl/workben/minweld.cxx b/vcl/workben/minweld.cxx
new file mode 100644
index 000000000000..85e07c6de58c
--- /dev/null
+++ b/vcl/workben/minweld.cxx
@@ -0,0 +1,98 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <sal/config.h>
+
+#include <framework/desktop.hxx>
+#include <cppuhelper/bootstrap.hxx>
+#include <comphelper/processfactory.hxx>
+#include <com/sun/star/lang/XMultiServiceFactory.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <i18nlangtag/languagetag.hxx>
+#include <i18nlangtag/mslangid.hxx>
+
+#include <vcl/svapp.hxx>
+#include <vcl/weld.hxx>
+#include <sal/main.h>
+
+#include <iostream>
+
+namespace
+{
+class TipOfTheDayDialog : public weld::GenericDialogController
+{
+public:
+    TipOfTheDayDialog(weld::Window* pParent = nullptr);
+    DECL_LINK(OnNextClick, weld::Button&, void);
+
+private:
+    std::unique_ptr<weld::Label> m_pTextLabel;
+    std::unique_ptr<weld::Button> m_pNextButton;
+    sal_Int32 m_nCounter = 0;
+};
+
+IMPL_LINK_NOARG(TipOfTheDayDialog, OnNextClick, weld::Button&, void)
+{
+    ++m_nCounter;
+    m_pTextLabel->set_label(u"Here you will see tip of the day #"_ustr
+                            + OUString::number(m_nCounter) + ".");
+}
+
+TipOfTheDayDialog::TipOfTheDayDialog(weld::Window* pParent)
+    : weld::GenericDialogController(pParent, u"cui/ui/tipofthedaydialog.ui"_ustr,
+                                    u"TipOfTheDayDialog"_ustr)
+    , m_pTextLabel(m_xBuilder->weld_label(u"lbText"_ustr))
+    , m_pNextButton(m_xBuilder->weld_button(u"btnNext"_ustr))
+{
+    m_pNextButton->connect_clicked(LINK(this, TipOfTheDayDialog, OnNextClick));
+}
+
+class TheApplication : public Application
+{
+public:
+    virtual int Main();
+};
+
+int TheApplication::Main()
+{
+    TipOfTheDayDialog dialog;
+    dialog.run();
+    return 0;
+}
+}
+
+SAL_IMPLEMENT_MAIN()
+{
+    try
+    {
+        TheApplication aApp;
+
+        auto xContext = cppu::defaultBootstrap_InitialComponentContext();
+        css::uno::Reference<css::lang::XMultiServiceFactory> xServiceManager(
+            xContext->getServiceManager(), css::uno::UNO_QUERY);
+        comphelper::setProcessServiceFactory(xServiceManager);
+        LanguageTag::setConfiguredSystemLanguage(MsLangId::getSystemLanguage());
+        InitVCL();
+
+        aApp.Main();
+
+        framework::getDesktop(::comphelper::getProcessComponentContext())->terminate();
+        DeInitVCL();
+        comphelper::setProcessServiceFactory(nullptr);
+    }
+    catch (...)
+    {
+        std::cerr << "An exception has occurred\n";
+        return 1;
+    }
+
+    return 0;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */