LOK: tile rendering regression fix

Calc fast rendering requires us to offset
the are being rendered and shift all
bitmaps accordingly. This however is
breaking Impress rendering since the
offseting logic is common (in svx and vcl).

This adds new API to enable or disable
this local rendering (as opposed to
rendering a full document as was previously
done.

The new flag is then set by Calc to
enable the offseting logic in isolation
without affecting other applications.

In one case isolation was achieved by
checking the MapModeUnit.

Change-Id: Ia0aadfc3f6df7c1a891b97dc731f5897414c9420
Reviewed-on: https://gerrit.libreoffice.org/26367
Reviewed-by: Ashod Nakashian <ashnakash@gmail.com>
Tested-by: Ashod Nakashian <ashnakash@gmail.com>
(cherry picked from commit 60fdcda65bad242f99895cb453182578250fbdea)
Reviewed-on: https://gerrit.libreoffice.org/26378
Tested-by: Jenkins <ci@libreoffice.org>

5 files changed, 45 insertions, 5 deletions

diff --git a/comphelper/source/misc/lok.cxx b/comphelper/source/misc/lok.cxx
index a6abd2a65486..a321260588f1 100644
--- a/comphelper/source/misc/lok.cxx
+++ b/comphelper/source/misc/lok.cxx
@@ -17,6 +17,8 @@ namespace LibreOfficeKit
 
 static bool g_bActive(false);
 
+static bool g_bViewCallback(true);
+
 void setActive(bool bActive)
 {
     g_bActive = bActive;
@@ -27,6 +29,28 @@ bool isActive()
     return g_bActive;
 }
 
+void setViewCallback(bool bViewCallback)
+{
+    g_bViewCallback = bViewCallback;
+}
+
+bool isViewCallback()
+{
+    return g_bViewCallback;
+}
+
+static bool g_bLocalRendering(false);
+
+void setLocalRendering(bool bLocalRendering)
+{
+    g_bLocalRendering = bLocalRendering;
+}
+
+bool isLocalRendering()
+{
+    return g_bLocalRendering;
+}
+
 static void (*pStatusIndicatorCallback)(void *data, statusIndicatorCallbackType type, int percent)(nullptr);
 static void *pStatusIndicatorCallbackData(nullptr);
 
diff --git a/include/comphelper/lok.hxx b/include/comphelper/lok.hxx
index 79fa115e6585..8afd3d82a77d 100644
--- a/include/comphelper/lok.hxx
+++ b/include/comphelper/lok.hxx
@@ -36,6 +36,18 @@ COMPHELPER_DLLPUBLIC void setStatusIndicatorCallback(void (*callback)(void *data
 // Check whether the code is running as invoked through LibreOfficeKit.
 COMPHELPER_DLLPUBLIC bool isActive();
 
+/// Shift the coordinates before rendering each bitmap.
+/// Used by Calc to render each tile separately.
+/// This should be unnecessary (and removed) once Calc
+/// moves to using 100MM Unit.
+COMPHELPER_DLLPUBLIC void setLocalRendering(bool bLocalRendering = true);
+COMPHELPER_DLLPUBLIC bool isLocalRendering();
+
+/// Check whether clients register a callback for each view.
+COMPHELPER_DLLPUBLIC bool isViewCallback();
+/// Set whether clients register a callback for each view.
+COMPHELPER_DLLPUBLIC void setViewCallback(bool bViewCallback);
+
 // Status indicator handling. Even if in theory there could be several status indicators active at
 // the same time, in practice there is only one at a time, so we don't handle any identification of
 // status indicator in this API.
diff --git a/sc/source/ui/view/gridwin4.cxx b/sc/source/ui/view/gridwin4.cxx
index 39999bd5099c..df98ab9fe469 100644
--- a/sc/source/ui/view/gridwin4.cxx
+++ b/sc/source/ui/view/gridwin4.cxx
@@ -826,6 +826,7 @@ void ScGridWindow::DrawContent(OutputDevice &rDevice, const ScTableInfo& rTableI
                         aOrigin.getY() - aOrigin.getY() / twipFactor);
         aNew.SetOrigin(aOrigin);
         pContentDev->SetMapMode(aNew);
+        comphelper::LibreOfficeKit::setLocalRendering();
     }
 
     DrawRedraw( aOutputData, eMode, SC_LAYER_FRONT );
diff --git a/svx/source/sdr/contact/objectcontactofpageview.cxx b/svx/source/sdr/contact/objectcontactofpageview.cxx
index cead940fab6a..589c29260177 100644
--- a/svx/source/sdr/contact/objectcontactofpageview.cxx
+++ b/svx/source/sdr/contact/objectcontactofpageview.cxx
@@ -232,7 +232,8 @@ namespace sdr
 
                 // transform to world coordinates
                 aViewRange.transform(rTargetOutDev.GetInverseViewTransformation());
-                if (comphelper::LibreOfficeKit::isActive())
+                if (comphelper::LibreOfficeKit::isActive() &&
+                    comphelper::LibreOfficeKit::isLocalRendering())
                 {
                     const int TWIPS_PER_PIXEL = 15;
                     aViewRange = basegfx::B2DRange(aViewRange.getMinimum().getX(),
@@ -309,7 +310,8 @@ namespace sdr
                     drawinglayer::processor2d::createProcessor2DFromOutputDevice(
                         rTargetOutDev, getViewInformation2D()));
 
-                if (comphelper::LibreOfficeKit::isActive())
+                if (comphelper::LibreOfficeKit::isActive() &&
+                    comphelper::LibreOfficeKit::isLocalRendering())
                 {
                     // Restore the origin.
                     MapMode aMapMode = pOutDev->GetMapMode();
@@ -322,7 +324,8 @@ namespace sdr
                     pProcessor2D->process(xPrimitiveSequence);
                 }
 
-                if (comphelper::LibreOfficeKit::isActive())
+                if (comphelper::LibreOfficeKit::isActive() &&
+                    comphelper::LibreOfficeKit::isLocalRendering())
                 {
                     // Restore the original map-mode.
                     pOutDev->SetMapMode(aOrigMapMode);
diff --git a/vcl/source/outdev/bitmap.cxx b/vcl/source/outdev/bitmap.cxx
index fae4c6a75713..31b25a2d199a 100644
--- a/vcl/source/outdev/bitmap.cxx
+++ b/vcl/source/outdev/bitmap.cxx
@@ -1199,14 +1199,14 @@ void OutputDevice::DrawTransformedBitmapEx(
             basegfx::fround(aScale.getX() + aTranslate.getX()) - aDestPt.X(),
             basegfx::fround(aScale.getY() + aTranslate.getY()) - aDestPt.Y());
         const Point aOrigin = GetMapMode().GetOrigin();
-        if (comphelper::LibreOfficeKit::isActive())
+        if (comphelper::LibreOfficeKit::isActive() && GetMapMode().GetMapUnit() != MAP_PIXEL)
         {
             aDestPt.Move(aOrigin.getX(), aOrigin.getY());
             EnableMapMode(false);
         }
 
         DrawBitmapEx(aDestPt, aDestSize, rBitmapEx);
-        if (comphelper::LibreOfficeKit::isActive())
+        if (comphelper::LibreOfficeKit::isActive() && GetMapMode().GetMapUnit() != MAP_PIXEL)
         {
             EnableMapMode();
             aDestPt.Move(-aOrigin.getX(), -aOrigin.getY());