Implement weld::IconView::connect_query_tooltip

Change-Id: I8a8540e240d6a7046f564404c7c3b6bff8c2f04d
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/134806
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>

3 files changed, 65 insertions, 0 deletions

diff --git a/vcl/inc/salvtables.hxx b/vcl/inc/salvtables.hxx
index 3f574237444b..7752b5243c11 100644
--- a/vcl/inc/salvtables.hxx
+++ b/vcl/inc/salvtables.hxx
@@ -1756,6 +1756,7 @@ private:
     DECL_LINK(DeSelectHdl, SvTreeListBox*, void);
     DECL_LINK(DoubleClickHdl, SvTreeListBox*, bool);
     DECL_LINK(CommandHdl, const CommandEvent&, bool);
+    DECL_LINK(TooltipHdl, const HelpEvent&, bool);
 
 public:
     SalInstanceIconView(::IconView* pIconView, SalInstanceBuilder* pBuilder, bool bTakeOwnership);
@@ -1770,6 +1771,8 @@ public:
     virtual void insert(int pos, const OUString* pStr, const OUString* pId,
                         const VirtualDevice* pIcon, weld::TreeIter* pRet) override;
 
+    virtual void connect_query_tooltip(const Link<const weld::TreeIter&, OUString>& rLink) override;
+
     virtual OUString get_selected_id() const override;
 
     virtual OUString get_selected_text() const override;
diff --git a/vcl/source/app/salvtables.cxx b/vcl/source/app/salvtables.cxx
index fd7739f3c460..4755c94e51cb 100644
--- a/vcl/source/app/salvtables.cxx
+++ b/vcl/source/app/salvtables.cxx
@@ -5404,6 +5404,32 @@ void SalInstanceIconView::insert(int pos, const OUString* pStr, const OUString*
     enable_notify_events();
 }
 
+IMPL_LINK(SalInstanceIconView, TooltipHdl, const HelpEvent&, rHEvt, bool)
+{
+    if (notify_events_disabled())
+        return false;
+    Point aPos(m_xIconView->ScreenToOutputPixel(rHEvt.GetMousePosPixel()));
+    SvTreeListEntry* pEntry = m_xIconView->GetEntry(aPos);
+    if (pEntry)
+    {
+        SalInstanceTreeIter aIter(pEntry);
+        OUString aTooltip = signal_query_tooltip(aIter);
+        if (aTooltip.isEmpty())
+            return false;
+        Size aSize(m_xIconView->GetOutputSizePixel().Width(), m_xIconView->GetEntryHeight());
+        tools::Rectangle aScreenRect(
+            m_xIconView->OutputToScreenPixel(m_xIconView->GetEntryPosition(pEntry)), aSize);
+        Help::ShowQuickHelp(m_xIconView, aScreenRect, aTooltip);
+    }
+    return true;
+}
+
+void SalInstanceIconView::connect_query_tooltip(const Link<const weld::TreeIter&, OUString>& rLink)
+{
+    weld::IconView::connect_query_tooltip(rLink);
+    m_xIconView->SetTooltipHdl(LINK(this, SalInstanceIconView, TooltipHdl));
+}
+
 OUString SalInstanceIconView::get_selected_id() const
 {
     assert(m_xIconView->IsUpdateMode() && "don't request selection when frozen");
diff --git a/vcl/unx/gtk3/gtkinst.cxx b/vcl/unx/gtk3/gtkinst.cxx
index c61f6d650261..1f61fc49db3d 100644
--- a/vcl/unx/gtk3/gtkinst.cxx
+++ b/vcl/unx/gtk3/gtkinst.cxx
@@ -16099,6 +16099,7 @@ private:
 #if !GTK_CHECK_VERSION(4, 0, 0)
     gulong m_nPopupMenu;
 #endif
+    gulong m_nQueryTooltipSignalId = 0;
     ImplSVEvent* m_pSelectionChangeEvent;
 
     DECL_LINK(async_signal_selection_changed, void*, void);
@@ -16145,6 +16146,32 @@ private:
         pThis->handle_item_activated();
     }
 
+    static gboolean signalQueryTooltip(GtkWidget* /*pGtkWidget*/, gint x, gint y,
+        gboolean keyboard_tip, GtkTooltip* tooltip,
+        gpointer widget)
+    {
+        GtkInstanceIconView* pThis = static_cast<GtkInstanceIconView*>(widget);
+        GtkTreeIter iter;
+        GtkIconView* pIconView = pThis->m_pIconView;
+        GtkTreeModel* pModel = gtk_icon_view_get_model(pIconView);
+        GtkTreePath* pPath = nullptr;
+#if GTK_CHECK_VERSION(4, 0, 0)
+        if (!gtk_icon_view_get_tooltip_context(pIconView, x, y, keyboard_tip, &pModel, &pPath, &iter))
+            return false;
+#else
+        if (!gtk_icon_view_get_tooltip_context(pIconView, &x, &y, keyboard_tip, &pModel, &pPath, &iter))
+            return false;
+#endif
+        OUString aTooltip = pThis->signal_query_tooltip(GtkInstanceTreeIter(iter));
+        if (!aTooltip.isEmpty())
+        {
+            gtk_tooltip_set_text(tooltip, OUStringToOString(aTooltip, RTL_TEXTENCODING_UTF8).getStr());
+            gtk_icon_view_set_tooltip_item(pIconView, tooltip, pPath);
+        }
+        gtk_tree_path_free(pPath);
+        return !aTooltip.isEmpty();
+    }
+
     void insert_item(GtkTreeIter& iter, int pos, const OUString* pId, const OUString* pText, const OUString* pIconName)
     {
         gtk_tree_store_insert_with_values(m_pTreeStore, &iter, nullptr, pos,
@@ -16251,6 +16278,12 @@ public:
         enable_notify_events();
     }
 
+    virtual void connect_query_tooltip(const Link<const weld::TreeIter&, OUString>& rLink) override
+    {
+        weld::IconView::connect_query_tooltip(rLink);
+        m_nQueryTooltipSignalId = g_signal_connect(m_pIconView, "query-tooltip", G_CALLBACK(signalQueryTooltip), this);
+    }
+
     virtual OUString get_selected_id() const override
     {
         assert(gtk_icon_view_get_model(m_pIconView) && "don't request selection when frozen");
@@ -16495,6 +16528,9 @@ public:
         if (m_pSelectionChangeEvent)
             Application::RemoveUserEvent(m_pSelectionChangeEvent);
 
+        if (m_nQueryTooltipSignalId)
+            g_signal_handler_disconnect(m_pIconView, m_nQueryTooltipSignalId);
+
         g_signal_handler_disconnect(m_pIconView, m_nItemActivatedSignalId);
         g_signal_handler_disconnect(m_pIconView, m_nSelectionChangedSignalId);
 #if !GTK_CHECK_VERSION(4, 0, 0)