sd lok: fix pixel-to-logic conversion in DrawViewShell::MakeVisible()

The problem, as seen by the user is that during shape text edit,
sometimes just traveling with the cursor causes invalidations, which is
unexpected.

What happens is sd::Window::KeyInput() invokes
sd::DrawViewShell::MakeVisible(), which does a pixel-to-logic
conversion, but because the map mode is in general disabled in the LOK
case, nothing happens. Then a bit later aVisArea.IsInside(rRect) fails,
as it compares pixel and logic units, which results in
sd::ViewOverlayManager::UpdateTags() scheduling an async call to
sd::ViewOverlayManager::UpdateTagsHdl(), which at the end causes a full
invalidation in sd::SmartTagSet::remove().

Fix the situation by temporarily enabling map mode, so we don't detect
a visible cursor area as a non-visible one.

Change-Id: I6d16f24d13143dc263a89317fbc38111e652c0ac

sd/qa/unit/tiledrendering/tiledrendering.cxx

@@ -77,6 +77,7 @@ public:
     void testCreateViewGraphicSelection();
     void testCreateViewTextCursor();
     void testTdf102223();
+    void testPostKeyEventInvalidation();
 
     CPPUNIT_TEST_SUITE(SdTiledRenderingTest);
     CPPUNIT_TEST(testRegisterCallback);
@@ -105,6 +106,7 @@ public:
     CPPUNIT_TEST(testCreateViewGraphicSelection);
     CPPUNIT_TEST(testCreateViewTextCursor);
     CPPUNIT_TEST(testTdf102223);
+    CPPUNIT_TEST(testPostKeyEventInvalidation);
     CPPUNIT_TEST_SUITE_END();
 
 private:
@@ -1289,6 +1291,51 @@ void SdTiledRenderingTest::testTdf102223()
     comphelper::LibreOfficeKit::setActive(false);
 }
 
+void SdTiledRenderingTest::testPostKeyEventInvalidation()
+{
+    // Load a document and begin text edit on the first slide.
+    comphelper::LibreOfficeKit::setActive();
+    SdXImpressDocument* pXImpressDocument = createDoc("2slides.odp");
+    CPPUNIT_ASSERT_EQUAL(0, pXImpressDocument->getPart());
+    ViewCallback aView1;
+    SfxViewShell::Current()->registerLibreOfficeKitViewCallback(&ViewCallback::callback, &aView1);
+    sd::ViewShell* pViewShell = pXImpressDocument->GetDocShell()->GetViewShell();
+    SdrView* pView = pViewShell->GetView();
+    pXImpressDocument->postKeyEvent(LOK_KEYEVENT_KEYINPUT, 0, KEY_TAB);
+    pXImpressDocument->postKeyEvent(LOK_KEYEVENT_KEYUP, 0, KEY_TAB);
+    pXImpressDocument->postKeyEvent(LOK_KEYEVENT_KEYINPUT, 0, KEY_F2);
+    pXImpressDocument->postKeyEvent(LOK_KEYEVENT_KEYUP, 0, KEY_F2);
+    Scheduler::ProcessEventsToIdle();
+    CPPUNIT_ASSERT(pView->GetTextEditObject());
+
+    // Create a second view and begin text edit there as well, in parallel.
+    SfxLokHelper::createView();
+    pXImpressDocument->initializeForTiledRendering({});
+    ViewCallback aView2;
+    SfxViewShell::Current()->registerLibreOfficeKitViewCallback(&ViewCallback::callback, &aView2);
+    pXImpressDocument->setPart(1);
+    sd::ViewShell* pViewShell2 = pXImpressDocument->GetDocShell()->GetViewShell();
+    SdrView* pView2 = pViewShell2->GetView();
+    pXImpressDocument->postKeyEvent(LOK_KEYEVENT_KEYINPUT, 0, KEY_TAB);
+    pXImpressDocument->postKeyEvent(LOK_KEYEVENT_KEYUP, 0, KEY_TAB);
+    pXImpressDocument->postKeyEvent(LOK_KEYEVENT_KEYINPUT, 0, KEY_F2);
+    pXImpressDocument->postKeyEvent(LOK_KEYEVENT_KEYUP, 0, KEY_F2);
+    Scheduler::ProcessEventsToIdle();
+    CPPUNIT_ASSERT(pView2->GetTextEditObject());
+
+    // Now go left with the cursor in the second view an watch for
+    // invalidations.
+    aView2.m_bTilesInvalidated = false;
+    pXImpressDocument->postKeyEvent(LOK_KEYEVENT_KEYINPUT, 0, KEY_LEFT);
+    pXImpressDocument->postKeyEvent(LOK_KEYEVENT_KEYUP, 0, KEY_LEFT);
+    Scheduler::ProcessEventsToIdle();
+    // This failed: moving the cursor caused unexpected invalidation.
+    CPPUNIT_ASSERT(!aView2.m_bTilesInvalidated);
+
+    mxComponent->dispose();
+    mxComponent.clear();
+    comphelper::LibreOfficeKit::setActive(false);
+}
 
 CPPUNIT_TEST_SUITE_REGISTRATION(SdTiledRenderingTest);
 

sd/source/ui/view/drviewsh.cxx

@@ -25,6 +25,7 @@
 
 #include <svx/fmshell.hxx>
 #include <sfx2/dispatch.hxx>
+#include <comphelper/lok.hxx>
 
 #include "app.hrc"
 #include "strings.hrc"
@@ -80,7 +81,15 @@ void DrawViewShell::MakeVisible(const Rectangle& rRect, vcl::Window& rWin)
 
     // visible area
     Size aVisSizePixel(rWin.GetOutputSizePixel());
+    bool bTiledRendering = comphelper::LibreOfficeKit::isActive() && !rWin.IsMapModeEnabled();
+    if (bTiledRendering)
+    {
+        rWin.Push(PushFlags::MAPMODE);
+        rWin.EnableMapMode();
+    }
     Rectangle aVisArea(rWin.PixelToLogic(Rectangle(Point(0,0), aVisSizePixel)));
+    if (bTiledRendering)
+        rWin.Pop();
     Size aVisAreaSize(aVisArea.GetSize());
 
     if (!aVisArea.IsInside(rRect) && !SlideShow::IsRunning( GetViewShellBase() ) )