tdf#124238 - Show a Tip-Of-The-Day dialog on startup

New dialog

Change-Id: If1e501de26eb5a9c20a59e621f9e805c3b5e2cf8
Reviewed-on: https://gerrit.libreoffice.org/69498
Tested-by: Jenkins
Reviewed-by: Heiko Tietze <tietze.heiko@gmail.com>

Repository.mk

@@ -945,6 +945,7 @@ $(eval $(call gb_Helper_register_packages_for_install,ooo,\
 	wizards_basicusr \
 	wizards_properties \
 	wizards_wizardshare \
+	tipoftheday_images \
 	vcl_opengl_shader \
 	vcl_theme_definitions \
 	$(if $(filter WNT,$(OS)), \

cui/Library_cui.mk

@@ -115,6 +115,7 @@ $(eval $(call gb_Library_add_exception_objects,cui,\
     cui/source/dialogs/hltpbase \
     cui/source/dialogs/hyphen \
     cui/source/dialogs/iconcdlg \
+    cui/source/dialogs/tipofthedaydlg \
     cui/source/dialogs/insdlg \
     cui/source/dialogs/insrc \
     cui/source/dialogs/linkdlg \

cui/UIConfig_cui.mk

@@ -87,6 +87,7 @@ $(eval $(call gb_UIConfig_add_uifiles,cui,\
 	cui/uiconfig/ui/hyphenate \
 	cui/uiconfig/ui/iconchangedialog \
 	cui/uiconfig/ui/iconselectordialog \
+	cui/uiconfig/ui/tipofthedaydialog \
 	cui/uiconfig/ui/insertfloatingframe \
 	cui/uiconfig/ui/insertoleobject \
 	cui/uiconfig/ui/insertrowcolumn \

cui/source/dialogs/tipofthedaydlg.cxx

+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <tipofthedaydlg.hxx>
+
+#include <config_folders.h>
+#include <dialmgr.hxx>
+#include <officecfg/Office/Common.hxx>
+#include <osl/file.hxx>
+#include <rtl/bootstrap.hxx>
+#include <tipoftheday.hrc>
+#include <vcl/graphicfilter.hxx>
+#include <vcl/virdev.hxx>
+
+TipOfTheDayDialog::TipOfTheDayDialog(weld::Window* pParent)
+    : GenericDialogController(pParent, "cui/ui/tipofthedaydialog.ui", "TipOfTheDayDialog")
+    , m_pImage(m_xBuilder->weld_image("imImage"))
+    , m_pText(m_xBuilder->weld_label("lbText"))
+    , m_pShowTip(m_xBuilder->weld_check_button("cbShowTip"))
+    , m_pNext(m_xBuilder->weld_button("btnNext"))
+    , m_pLink(m_xBuilder->weld_link_button("btnLink"))
+{
+    m_pShowTip->connect_toggled(LINK(this, TipOfTheDayDialog, OnShowTipToggled));
+    m_pNext->connect_clicked(LINK(this, TipOfTheDayDialog, OnNextClick));
+
+    nNumberOfTips = SAL_N_ELEMENTS(TIPOFTHEDAY_STRINGARRAY);
+    nCurrentTip = rand() % nNumberOfTips;
+    UpdateTip();
+}
+
+TipOfTheDayDialog::~TipOfTheDayDialog()
+{
+    std::shared_ptr<comphelper::ConfigurationChanges> xChanges(
+        comphelper::ConfigurationChanges::create());
+    const auto t0 = std::chrono::system_clock::now().time_since_epoch();
+    const sal_Int32 nDay
+        = std::chrono::duration_cast<std::chrono::hours>(t0).count() / 24; // days since 1970-01-01
+    officecfg::Office::Common::Misc::LastTipOfTheDayShown::set(nDay, xChanges);
+    xChanges->commit();
+}
+
+static bool file_exists(const OUString& fileName)
+{
+    ::osl::File aFile(fileName);
+    return aFile.open(osl_File_OpenFlag_Read) == osl::FileBase::E_None;
+}
+
+void TipOfTheDayDialog::UpdateTip()
+{
+    //get string
+    OUString aText;
+    aText = CuiResId(TIPOFTHEDAY_STRINGARRAY[nCurrentTip]);
+    //move hyperlink into linkbutton
+    sal_Int32 nPos = aText.indexOf("http");
+    if (nPos > 0)
+    {
+        m_pLink->set_visible(true);
+        if (aText.getLength() - nPos > 40)
+            m_pLink->set_label(aText.copy(nPos, 40) + "...");
+        else
+            m_pLink->set_label(aText.copy(nPos));
+        m_pLink->set_uri(aText.copy(nPos));
+        aText = aText.copy(0, nPos - 1);
+    }
+    else
+        m_pLink->set_visible(false);
+    m_pText->set_label(aText);
+
+    // import the image
+    OUString aURL("$BRAND_BASE_DIR/$BRAND_SHARE_SUBDIR/tipoftheday/");
+    rtl::Bootstrap::expandMacros(aURL);
+    OUString aName = "tipoftheday_" + OUString::number(nCurrentTip) + ".png";
+    // use default image if none is available with the number
+    if (!file_exists(aURL + aName))
+        aName = "tipoftheday.png";
+    // draw image
+    Graphic aGraphic;
+    if (GraphicFilter::LoadGraphic(aURL + aName, OUString(), aGraphic) == ERRCODE_NONE)
+    {
+        ScopedVclPtr<VirtualDevice> m_pVirDev;
+        m_pVirDev = m_pImage->create_virtual_device();
+        m_pVirDev->SetOutputSizePixel(aGraphic.GetSizePixel());
+        m_pVirDev->DrawBitmapEx(Point(0, 0), aGraphic.GetBitmapEx());
+        m_pImage->set_image(m_pVirDev.get());
+        m_pVirDev.disposeAndClear();
+    }
+}
+
+IMPL_STATIC_LINK(TipOfTheDayDialog, OnShowTipToggled, weld::ToggleButton&, rButton, void)
+{
+    std::shared_ptr<comphelper::ConfigurationChanges> xChanges(
+        comphelper::ConfigurationChanges::create());
+    officecfg::Office::Common::Misc::ShowTipOfTheDay::set(rButton.get_active(), xChanges);
+    xChanges->commit();
+}
+
+IMPL_LINK_NOARG(TipOfTheDayDialog, OnNextClick, weld::Button&, void)
+{
+    nCurrentTip = rand() % nNumberOfTips;
+    UpdateTip();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
\ No newline at end of file

cui/source/factory/cuiexp.cxx

@@ -50,6 +50,7 @@
 #include <thesdlg.hxx>
 #include <hangulhanjadlg.hxx>
 #include <dstribut.hxx>
+#include <tipofthedaydlg.hxx>
 #include "dlgfact.hxx"
 #include <sal/types.h>
 

cui/source/factory/dlgfact.cxx

@@ -88,6 +88,7 @@
 #include <hyphen.hxx>
 #include <thesdlg.hxx>
 #include <about.hxx>
+#include <tipofthedaydlg.hxx>
 
 using namespace ::com::sun::star;
 using namespace ::com::sun::star::frame;
@@ -1344,6 +1345,11 @@ short SvxMacroAssignDialog::Execute()
     return m_xDialog->run();
 }
 
+short AbstractTipOfTheDayDialog_Impl::Execute()
+{
+    return m_xDlg->run();
+}
+
 VclPtr<VclAbstractDialog> AbstractDialogFactory_Impl::CreateSvxMacroAssignDlg(
     weld::Window* _pParent, const Reference< XFrame >& _rxDocumentFrame, const bool _bUnoDialogMode,
     const Reference< XNameReplace >& _rxEvents, const sal_uInt16 _nInitiallySelectedEvent )
@@ -1588,4 +1594,10 @@ AbstractDialogFactory_Impl::CreateSignSignatureLineDialog(weld::Window* pParent,
         std::make_unique<SignSignatureLineDialog>(pParent, xModel));
 }
 
+VclPtr<AbstractTipOfTheDayDialog>
+AbstractDialogFactory_Impl::CreateTipOfTheDayDialog(weld::Window* pParent)
+{
+    return VclPtr<AbstractTipOfTheDayDialog_Impl>::Create(std::make_unique<TipOfTheDayDialog>(pParent));
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

cui/source/factory/dlgfact.hxx

@@ -658,6 +658,20 @@ public:
     virtual short Execute() override;
 };
 
+class TipOfTheDayDialog;
+class AbstractTipOfTheDayDialog_Impl : public AbstractTipOfTheDayDialog
+{
+protected:
+    std::unique_ptr<TipOfTheDayDialog> m_xDlg;
+
+public:
+    explicit AbstractTipOfTheDayDialog_Impl(std::unique_ptr<TipOfTheDayDialog> p)
+        : m_xDlg(std::move(p))
+    {
+    }
+    virtual short Execute() override;
+};
+
 //AbstractDialogFactory_Impl implementations
 class AbstractDialogFactory_Impl : public SvxAbstractDialogFactory
 {
@@ -836,6 +850,8 @@ public:
     virtual VclPtr<AbstractSignSignatureLineDialog>
     CreateSignSignatureLineDialog(weld::Window* pParent,
                                   const css::uno::Reference<css::frame::XModel> xModel) override;
+
+    virtual VclPtr<AbstractTipOfTheDayDialog> CreateTipOfTheDayDialog(weld::Window* pParent) override;
 };
 
 #endif

cui/source/inc/tipofthedaydlg.hxx

+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+#ifndef INCLUDED_CUI_SOURCE_INC_TIPOFTHEDAYDLG_HXX
+#define INCLUDED_CUI_SOURCE_INC_TIPOFTHEDAYDLG_HXX
+
+#include <vcl/weld.hxx>
+
+class TipOfTheDayDialog : public weld::GenericDialogController
+{
+private:
+    std::unique_ptr<weld::Image> m_pImage;
+    std::unique_ptr<weld::Label> m_pText;
+    std::unique_ptr<weld::CheckButton> m_pShowTip;
+    std::unique_ptr<weld::Button> m_pNext;
+    std::unique_ptr<weld::LinkButton> m_pLink;
+
+    sal_uInt32 nCurrentTip;
+    sal_uInt32 nNumberOfTips;
+    void UpdateTip();
+    DECL_STATIC_LINK(TipOfTheDayDialog, OnShowTipToggled, weld::ToggleButton&, void);
+    DECL_LINK(OnNextClick, weld::Button&, void);
+
+public:
+    TipOfTheDayDialog(weld::Window* pWindow);
+    virtual ~TipOfTheDayDialog() override;
+};
+
+#endif // INCLUDED_CUI_SOURCE_INC_TIPOFTHEDAYDLG_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

cui/source/options/optgdlg.cxx

@@ -260,6 +260,7 @@ OfaMiscTabPage::OfaMiscTabPage(TabPageParent pParent, const SfxItemSet& rSet)
     : SfxTabPage(pParent, "cui/ui/optgeneralpage.ui", "OptGeneralPage", &rSet)
     , m_xExtHelpCB(m_xBuilder->weld_check_button("exthelp"))
     , m_xPopUpNoHelpCB(m_xBuilder->weld_check_button("popupnohelp"))
+    , m_xShowTipOfTheDay(m_xBuilder->weld_check_button("cbShowTipOfTheDay"))
     , m_xFileDlgFrame(m_xBuilder->weld_widget("filedlgframe"))
     , m_xPrintDlgFrame(m_xBuilder->weld_widget("printdlgframe"))
     , m_xFileDlgROImage(m_xBuilder->weld_widget("lockimage"))
@@ -329,6 +330,12 @@ bool OfaMiscTabPage::FillItemSet( SfxItemSet* rSet )
     if ( m_xExtHelpCB->get_state_changed_from_saved() )
         aHelpOptions.SetExtendedHelp( m_xExtHelpCB->get_active() );
 
+    if ( m_xShowTipOfTheDay->get_state_changed_from_saved() )
+    {
+        officecfg::Office::Common::Misc::ShowTipOfTheDay::set(m_xShowTipOfTheDay->get_active(), batch);
+        bModified = true;
+    }
+
     if ( m_xFileDlgCB->get_state_changed_from_saved() )
     {
         SvtMiscOptions aMiscOpt;
@@ -382,6 +389,8 @@ void OfaMiscTabPage::Reset( const SfxItemSet* rSet )
     m_xExtHelpCB->save_state();
     m_xPopUpNoHelpCB->set_active( aHelpOptions.IsOfflineHelpPopUp() );
     m_xPopUpNoHelpCB->save_state();
+    m_xShowTipOfTheDay->set_active( officecfg::Office::Common::Misc::ShowTipOfTheDay::get() );
+    m_xShowTipOfTheDay->save_state();
     SvtMiscOptions aMiscOpt;
     m_xFileDlgCB->set_active( !aMiscOpt.UseSystemFileDialog() );
     m_xFileDlgCB->save_state();

cui/source/options/optgdlg.hxx

@@ -44,6 +44,7 @@ private:
 
     std::unique_ptr<weld::CheckButton> m_xExtHelpCB;
     std::unique_ptr<weld::CheckButton> m_xPopUpNoHelpCB;
+    std::unique_ptr<weld::CheckButton> m_xShowTipOfTheDay;
     std::unique_ptr<weld::Widget> m_xFileDlgFrame;
     std::unique_ptr<weld::Widget> m_xPrintDlgFrame;
     std::unique_ptr<weld::Widget> m_xFileDlgROImage;

cui/uiconfig/ui/optgeneralpage.ui

@@ -59,6 +59,20 @@
                     <property name="top_attach">1</property>
                   </packing>
                 </child>
+                <child>
+                  <object class="GtkCheckButton" id="cbShowTipOfTheDay">
+                    <property name="label" translatable="yes" context="optgeneralpage|TipOfTheDayCheckbox">Show "Tip of the day" Dialog on Start-up</property>
+                    <property name="visible">True</property>
+                    <property name="can_focus">True</property>
+                    <property name="receives_default">False</property>
+                    <property name="active">True</property>
+                    <property name="draw_indicator">True</property>
+                  </object>
+                  <packing>
+                    <property name="left_attach">0</property>
+                    <property name="top_attach">2</property>
+                  </packing>
+                </child>
               </object>
             </child>
           </object>

cui/uiconfig/ui/tipofthedaydialog.ui

+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Generated with glade 3.22.1 -->
+<interface domain="cui">
+  <requires lib="gtk+" version="3.18"/>
+  <object class="GtkDialog" id="TipOfTheDayDialog">
+    <property name="can_focus">False</property>
+    <property name="border_width">6</property>
+    <property name="title" translatable="yes" context="TipOfTheDayDialog|Name">Tip of the day</property>
+    <property name="type_hint">dialog</property>
+    <child>
+      <placeholder/>
+    </child>
+    <child internal-child="vbox">
+      <object class="GtkBox" id="dialog-vbox1">
+        <property name="can_focus">False</property>
+        <property name="orientation">vertical</property>
+        <property name="spacing">12</property>
+        <child internal-child="action_area">
+          <object class="GtkButtonBox" id="dialog-action_area1">
+            <property name="can_focus">False</property>
+            <property name="hexpand">True</property>
+            <property name="layout_style">end</property>
+            <child>
+              <object class="GtkCheckButton" id="cbShowTip">
+                <property name="label" translatable="yes" context="TipOfTheDay|Checkbox">_Show tips on startup</property>
+                <property name="visible">True</property>
+                <property name="can_focus">True</property>
+                <property name="receives_default">False</property>
+                <property name="tooltip_text" translatable="yes" context="TipOfTheDay|Checkbox_Tooltip">Enable the dialog again at Tools &gt; Options &gt; General</property>
+                <property name="use_underline">True</property>
+                <property name="active">True</property>
+                <property name="draw_indicator">True</property>
+              </object>
+              <packing>
+                <property name="expand">True</property>
+                <property name="fill">True</property>
+                <property name="position">0</property>
+                <property name="secondary">True</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkButton" id="btnNext">
+                <property name="label" translatable="yes" context="TipOfTheDayDialog|Next_Button">_Next Tip</property>
+                <property name="visible">True</property>
+                <property name="can_focus">True</property>
+                <property name="receives_default">True</property>
+                <property name="use_underline">True</property>
+              </object>
+              <packing>
+                <property name="expand">True</property>
+                <property name="fill">True</property>
+                <property name="position">1</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkButton" id="btnOk">
+                <property name="label">gtk-ok</property>
+                <property name="visible">True</property>
+                <property name="can_focus">True</property>
+                <property name="can_default">True</property>
+                <property name="has_default">True</property>
+                <property name="receives_default">True</property>
+                <property name="use_stock">True</property>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="fill">True</property>
+                <property name="position">2</property>
+              </packing>
+            </child>
+          </object>
+          <packing>
+            <property name="expand">False</property>
+            <property name="fill">True</property>
+            <property name="pack_type">end</property>
+            <property name="position">0</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkBox">
+            <property name="visible">True</property>
+            <property name="can_focus">False</property>
+            <child>
+              <object class="GtkImage" id="imImage">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="margin_left">12</property>
+                <property name="margin_right">12</property>
+                <property name="margin_top">12</property>
+                <property name="margin_bottom">12</property>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="fill">True</property>
+                <property name="position">0</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkBox">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="hexpand">True</property>
+                <property name="orientation">vertical</property>
+                <child>
+                  <object class="GtkLabel" id="lbTitle">
+                    <property name="visible">True</property>
+                    <property name="can_focus">False</property>
+                    <property name="margin_top">12</property>
+                    <property name="label" translatable="yes" context="TipOfTheDayDialog|Title">Did you know?</property>
+                    <attributes>
+                      <attribute name="weight" value="bold"/>
+                      <attribute name="scale" value="1.5"/>
+                    </attributes>
+                  </object>
+                  <packing>
+                    <property name="expand">False</property>
+                    <property name="fill">True</property>
+                    <property name="position">0</property>
+                  </packing>
+                </child>
+                <child>
+                  <object class="GtkSeparator">
+                    <property name="visible">True</property>
+                    <property name="can_focus">False</property>
+                  </object>
+                  <packing>
+                    <property name="expand">False</property>
+                    <property name="fill">True</property>
+                    <property name="position">1</property>
+                  </packing>
+                </child>
+                <child>
+                  <object class="GtkLabel" id="lbText">
+                    <property name="visible">True</property>
+                    <property name="can_focus">False</property>
+                    <property name="vexpand">True</property>
+                    <property name="wrap">True</property>
+                    <property name="max_width_chars">50</property>
+                  </object>
+                  <packing>
+                    <property name="expand">False</property>
+                    <property name="fill">True</property>
+                    <property name="position">2</property>
+                  </packing>
+                </child>
+                <child>
+                  <object class="GtkLinkButton" id="btnLink">
+                    <property name="label" translatable="yes" context="TipOfTheDayDialog|Link_Button">Link</property>
+                    <property name="can_focus">True</property>
+                    <property name="receives_default">True</property>
+                    <property name="relief">none</property>
+                  </object>
+                  <packing>
+                    <property name="expand">False</property>
+                    <property name="fill">True</property>
+                    <property name="position">3</property>
+                  </packing>
+                </child>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="fill">True</property>
+                <property name="position">1</property>
+              </packing>
+            </child>
+          </object>
+          <packing>
+            <property name="expand">True</property>
+            <property name="fill">True</property>
+            <property name="position">0</property>
+          </packing>
+        </child>
+      </object>
+    </child>
+    <action-widgets>
+      <action-widget response="-5">btnOk</action-widget>
+    </action-widgets>
+  </object>
+</interface>

include/vcl/abstdlg.hxx

@@ -119,6 +119,12 @@ protected:
     virtual ~AbstractSignSignatureLineDialog() override = default;
 };
 
+class VCL_DLLPUBLIC AbstractTipOfTheDayDialog : public VclAbstractDialog
+{
+protected:
+    virtual ~AbstractTipOfTheDayDialog() override = default;
+};
+
 class VCL_DLLPUBLIC VclAbstractDialogFactory
 {
 public:
@@ -147,6 +153,10 @@ public:
     virtual VclPtr<AbstractScreenshotAnnotationDlg> CreateScreenshotAnnotationDlg(
         vcl::Window* pParent,
         Dialog& rParentDialog) = 0;
+
+    // create info dialog to show tip-of-the-day
+    virtual VclPtr<AbstractTipOfTheDayDialog>
+    CreateTipOfTheDayDialog(weld::Window* pParent) = 0;
 };
 
 #endif

include/vcl/weld.hxx

@@ -1089,6 +1089,7 @@ class VCL_DLLPUBLIC Image : virtual public Widget
 {
 public:
     virtual void set_from_icon_name(const OUString& rIconName) = 0;
+    virtual void set_image(VirtualDevice* pDevice) = 0;
 };
 
 class VCL_DLLPUBLIC Calendar : virtual public Widget

officecfg/registry/schema/org/openoffice/Office/Common.xcs

@@ -5458,6 +5458,19 @@
         </info>
         <value>false</value>
       </prop>
+      <prop oor:name="ShowTipOfTheDay" oor:type="xs:boolean" oor:nillable="false">
+        <!-- UIHints: Tools - Options - General -->
+        <info>
+          <desc>Determines whether the Tip-Of-The-Day dialog is shown on startup.</desc>
+        </info>
+        <value>true</value>
+      </prop>
+      <prop oor:name="LastTipOfTheDayShown" oor:type="xs:int" oor:nillable="false">
+          <info>
+              <desc>The last time when the Tip-of-the-day dialog was shown.</desc>
+          </info>
+          <value>0</value>
+      </prop>
       <prop oor:name="UseOpenCL" oor:type="xs:boolean" oor:nillable="false">
         <info>
           <desc>Determines whether OpenCL can be used, when available, to speed up

sfx2/source/view/viewfrm.cxx

@@ -1219,9 +1219,30 @@ void SfxViewFrame::Notify( SfxBroadcaster& /*rBC*/, const SfxHint& rHint )
                 rBind.Invalidate( SID_RELOAD );
                 rBind.Invalidate( SID_EDITDOC );
 
+                const auto t0 = std::chrono::system_clock::now().time_since_epoch();
+
+                // show tip-of-the-day dialog
+                const bool bShowTipOfTheDay = officecfg::Office::Common::Misc::ShowTipOfTheDay::get();
+                bool bIsUITest = false; //uitest.uicheck fails when the dialog is open
+                for( sal_uInt16 i = 0; i < Application::GetCommandLineParamCount(); i++ )
+                {
+                    if( Application::GetCommandLineParam(i) == "--nologo" )
+                        bIsUITest = true;
+                }
+                if (bShowTipOfTheDay && !Application::IsHeadlessModeEnabled() && !bIsUITest) {
+                    const sal_Int32 nLastTipOfTheDay = officecfg::Office::Common::Misc::LastTipOfTheDayShown::get();
+                    const sal_Int32 nDay = std::chrono::duration_cast<std::chrono::hours>(t0).count()/24; // days since 1970-01-01
+                    if (nDay-nLastTipOfTheDay > 0) { //only once per day
+                        VclAbstractDialogFactory* pFact = VclAbstractDialogFactory::Create();
+                        VclPtr<VclAbstractDialog> pDlg =
+                            pFact->CreateTipOfTheDayDialog( GetWindow().GetFrameWeld() );
+                        pDlg->Execute();
+                    }
+                }
+
                 // inform about the community involvement
                 const sal_Int64 nLastGetInvolvedShown = officecfg::Setup::Product::LastTimeGetInvolvedShown::get();
-                const sal_Int64 nNow = std::chrono::duration_cast<std::chrono::seconds>(std::chrono::system_clock::now().time_since_epoch()).count();
+                const sal_Int64 nNow = std::chrono::duration_cast<std::chrono::seconds>(t0).count();
                 const sal_Int64 nPeriodSec(60 * 60 * 24 * 180); // 180 days in seconds
                 bool bUpdateLastTimeGetInvolvedShown = false;
 

solenv/sanitizers/ui/cui.suppr

@@ -245,6 +245,8 @@ cui/uiconfig/ui/hyphenate.ui://GtkButton[@id='right'] button-no-label
 cui/uiconfig/ui/iconchangedialog.ui://GtkTextView[@id='addrTextview'] no-labelled-by
 cui/uiconfig/ui/iconchangedialog.ui://GtkLabel[@id='label1'] orphan-label
 cui/uiconfig/ui/iconselectordialog.ui://GtkLabel[@id='noteLabel'] orphan-label
+cui/uiconfig/ui/tipofthedaydialog.ui://GtkLabel[@id='lbTitle'] orphan-label
+cui/uiconfig/ui/tipofthedaydialog.ui://GtkLabel[@id='lbText'] orphan-label
 cui/uiconfig/ui/insertfloatingframe.ui://GtkEntry[@id='edname'] no-labelled-by
 cui/uiconfig/ui/insertfloatingframe.ui://GtkEntry[@id='edurl'] no-labelled-by
 cui/uiconfig/ui/insertfloatingframe.ui://GtkLabel[@id='label6'] orphan-label

vcl/Module_vcl.mk

@@ -23,6 +23,7 @@ $(eval $(call gb_Module_add_targets,vcl,\
     Library_vcl \
     Package_opengl \
     Package_theme_definitions \
+    Package_tipoftheday \
     UIConfig_vcl \
 	$(if $(filter WNT,$(OS)), \
 		Package_opengl_blacklist ) \

vcl/Package_tipoftheday.mk

+# -*- 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 $(call gb_Package_Package,tipoftheday_images,extras/source/tipoftheday))
+
+$(eval $(call gb_Package_add_files_with_dir,tipoftheday_images,$(LIBO_SHARE_FOLDER)/tipoftheday,\
+	tipoftheday.png \
+	tipoftheday_1.png \
+	tipoftheday_2.png \
+))
+
+# vim: set noet sw=4 ts=4:

vcl/source/app/salvtables.cxx

@@ -2023,6 +2023,11 @@ public:
     {
         m_xImage->SetImage(::Image(StockImage::Yes, rIconName));
     }
+
+    virtual void set_image(VirtualDevice* pDevice) override
+    {
+        m_xImage->SetImage(createImage(*pDevice));
+    }
 };
 
 class SalInstanceCalendar : public SalInstanceWidget, public virtual weld::Calendar

vcl/unx/gtk3/gtk3gtkinst.cxx

@@ -5109,6 +5109,18 @@ public:
         gtk_image_set_from_pixbuf(m_pImage, pixbuf);
         g_object_unref(pixbuf);
     }
+
+    virtual void set_image(VirtualDevice* pDevice) override
+    {
+        if (gtk_check_version(3, 20, 0) == nullptr)
+            gtk_image_set_from_surface(m_pImage, get_underlying_cairo_surface(*pDevice));
+        else
+        {
+            GdkPixbuf* pixbuf = getPixbuf(*pDevice);
+            gtk_image_set_from_pixbuf(m_pImage, pixbuf);
+            g_object_unref(pixbuf);
+        }
+    }
 };
 
 class GtkInstanceCalendar : public GtkInstanceWidget, public virtual weld::Calendar