lok - add support for in place chart editing

This commit add a minimal support for editing chart embedded in a
spreadsheet or a text document or a presentation.
Graphic objects can be moved and resized, text objects can be edited.

Change-Id: I8e637dabf328a94bd6bb0e309a245302cff421d8
Reviewed-on: https://gerrit.libreoffice.org/39342
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Marco Cecchetti <mrcekets@gmail.com>

4 files changed, 440 insertions, 5 deletions

diff --git a/sfx2/Library_sfx.mk b/sfx2/Library_sfx.mk
index 201a106d0738..c0913939f31e 100644
--- a/sfx2/Library_sfx.mk
+++ b/sfx2/Library_sfx.mk
@@ -300,6 +300,7 @@ $(eval $(call gb_Library_add_exception_objects,sfx,\
     sfx2/source/view/frame2 \
     sfx2/source/view/frmload \
     sfx2/source/view/ipclient \
+    sfx2/source/view/lokcharthelper \
     sfx2/source/view/lokhelper \
     sfx2/source/view/printer \
     sfx2/source/view/sfxbasecontroller \
diff --git a/sfx2/source/view/ipclient.cxx b/sfx2/source/view/ipclient.cxx
index a70bb145cd2a..21f5de28970e 100644
--- a/sfx2/source/view/ipclient.cxx
+++ b/sfx2/source/view/ipclient.cxx
@@ -64,6 +64,8 @@
 #include <svtools/soerr.hxx>
 #include <comphelper/processfactory.hxx>
 
+#include <sfx2/lokhelper.hxx>
+
 #define SFX_CLIENTACTIVATE_TIMEOUT 100
 
 using namespace com::sun::star;
@@ -394,7 +396,27 @@ awt::Rectangle SAL_CALL SfxInPlaceClient_Impl::getPlacement()
     aRealObjArea.SetSize( Size( Fraction( aRealObjArea.GetWidth() ) * m_aScaleWidth,
                                 Fraction( aRealObjArea.GetHeight() ) * m_aScaleHeight ) );
 
-    aRealObjArea = m_pClient->GetEditWin()->LogicToPixel( aRealObjArea );
+    // In Writer and Impress the map mode is disabled. So when a chart is
+    // activated (for in place editing) we get the chart win size in 100th mm
+    // and any method that should return pixels returns 100th mm and the chart
+    // window map mode has a ~26.485 scale factor.
+    // All that does not fit with current implementation for handling chart
+    // editing in LOK.
+    if (comphelper::LibreOfficeKit::isActive())
+    {
+        vcl::Window* pEditWin = m_pClient->GetEditWin();
+        bool bMapModeEnabled = pEditWin->IsMapModeEnabled();
+        if (!bMapModeEnabled)
+            pEditWin->EnableMapMode();
+        aRealObjArea = m_pClient->GetEditWin()->LogicToPixel( aRealObjArea );
+        if (!bMapModeEnabled && pEditWin->IsMapModeEnabled())
+            pEditWin->EnableMapMode(false);
+    }
+    else
+    {
+        aRealObjArea = m_pClient->GetEditWin()->LogicToPixel( aRealObjArea );
+    }
+
     return AWTRectangle( aRealObjArea );
 }
 
@@ -409,7 +431,22 @@ awt::Rectangle SAL_CALL SfxInPlaceClient_Impl::getClipRectangle()
     aRealObjArea.SetSize( Size( Fraction( aRealObjArea.GetWidth() ) * m_aScaleWidth,
                                 Fraction( aRealObjArea.GetHeight() ) * m_aScaleHeight ) );
 
-    aRealObjArea = m_pClient->GetEditWin()->LogicToPixel( aRealObjArea );
+    // See comment for SfxInPlaceClient_Impl::getPlacement.
+    if (comphelper::LibreOfficeKit::isActive())
+    {
+        vcl::Window* pEditWin = m_pClient->GetEditWin();
+        bool bMapModeEnabled = pEditWin->IsMapModeEnabled();
+        if (!bMapModeEnabled)
+            pEditWin->EnableMapMode();
+        aRealObjArea = m_pClient->GetEditWin()->LogicToPixel( aRealObjArea );
+        if (!bMapModeEnabled && pEditWin->IsMapModeEnabled())
+            pEditWin->EnableMapMode(false);
+    }
+    else
+    {
+        aRealObjArea = m_pClient->GetEditWin()->LogicToPixel( aRealObjArea );
+    }
+
     return AWTRectangle( aRealObjArea );
 }
 
@@ -878,7 +915,13 @@ ErrCode SfxInPlaceClient::DoVerb( long nVerb )
 
             if ( !nError )
             {
-
+                // See comment for SfxInPlaceClient_Impl::getPlacement.
+                vcl::Window* pEditWin = GetEditWin();
+                bool bMapModeEnabled = pEditWin->IsMapModeEnabled();
+                if (comphelper::LibreOfficeKit::isActive() && !bMapModeEnabled)
+                {
+                    pEditWin->EnableMapMode();
+                }
                 m_pViewSh->GetViewFrame()->GetFrame().LockResize_Impl(true);
                 try
                 {
@@ -929,8 +972,13 @@ ErrCode SfxInPlaceClient::DoVerb( long nVerb )
                             " exception caught: " << e.Message);
                     nError = ERRCODE_SO_GENERALERROR;
                     //TODO/LATER: better error handling
-                }
 
+                }
+                if (comphelper::LibreOfficeKit::isActive() && !bMapModeEnabled
+                        && pEditWin->IsMapModeEnabled())
+                {
+                    pEditWin->EnableMapMode(false);
+                }
                 SfxViewFrame* pFrame = m_pViewSh->GetViewFrame();
                 pFrame->GetFrame().LockResize_Impl(false);
                 pFrame->GetFrame().Resize();
diff --git a/sfx2/source/view/lokcharthelper.cxx b/sfx2/source/view/lokcharthelper.cxx
new file mode 100644
index 000000000000..fffbc3efa58e
--- /dev/null
+++ b/sfx2/source/view/lokcharthelper.cxx
@@ -0,0 +1,373 @@
+/* -*- 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/.
+ */
+
+#include <sfx2/lokcharthelper.hxx>
+
+#include <LibreOfficeKit/LibreOfficeKitEnums.h>
+#include <sfx2/ipclient.hxx>
+#include <sfx2/lokhelper.hxx>
+#include <toolkit/helper/vclunohelper.hxx>
+#include <tools/fract.hxx>
+#include <tools/mapunit.hxx>
+#include <vcl/virdev.hxx>
+
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <com/sun/star/embed/XEmbeddedObject.hpp>
+#include <com/sun/star/frame/XModel.hpp>
+#include <com/sun/star/chart2/XChartDocument.hpp>
+
+
+#define TWIPS_PER_PIXEL 15
+
+using namespace com::sun::star;
+
+namespace {
+
+inline Point lcl_TwipsToHMM( const Point& rPoint )
+{
+    return Point(convertTwipToMm100(rPoint.getX()), convertTwipToMm100(rPoint.getY()));
+}
+
+inline Size lcl_TwipsToHMM( const Size& rSize )
+{
+    return Size(convertTwipToMm100(rSize.getWidth()), convertTwipToMm100(rSize.getHeight()));
+}
+
+} // end anonymous ns
+
+css::uno::Reference<css::frame::XController>& LokChartHelper::GetXController()
+{
+    if(!mxController.is() )
+    {
+        if (mpViewShell)
+        {
+            SfxInPlaceClient* pIPClient = mpViewShell->GetIPClient();
+            if (pIPClient)
+            {
+                css::uno::Reference< ::css::embed::XEmbeddedObject > xEmbObj = pIPClient->GetObject();
+                if( xEmbObj.is() )
+                {
+                    ::css::uno::Reference< ::css::chart2::XChartDocument > xChart( xEmbObj->getComponent(), uno::UNO_QUERY );
+                    if( xChart.is() )
+                    {
+                        ::css::uno::Reference< ::css::frame::XController > xChartController = xChart->getCurrentController();
+                        if( xChartController.is() )
+                        {
+                            mxController = xChartController;
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    return mxController;
+}
+
+css::uno::Reference<css::frame::XDispatch>& LokChartHelper::GetXDispatcher()
+{
+    if( !mxDispatcher.is() )
+    {
+        ::css::uno::Reference< ::css::frame::XController >& xChartController = GetXController();
+        if( xChartController.is() )
+        {
+            ::css::uno::Reference< ::css::frame::XDispatch > xDispatcher( xChartController, uno::UNO_QUERY );
+            if( xDispatcher.is() )
+            {
+                mxDispatcher = xDispatcher;
+            }
+        }
+    }
+
+    return mxDispatcher;
+}
+
+vcl::Window* LokChartHelper::GetWindow()
+{
+    if (!mpWindow)
+    {
+        ::css::uno::Reference< ::css::frame::XController >& xChartController = GetXController();
+        if( xChartController.is() )
+        {
+            ::css::uno::Reference< ::css::frame::XFrame > xFrame = xChartController->getFrame();
+            if (xFrame.is())
+            {
+                ::css::uno::Reference< ::css::awt::XWindow > xDockerWin = xFrame->getContainerWindow();
+                vcl::Window* pParent = VCLUnoHelper::GetWindow( xDockerWin ).get();
+                if (pParent)
+                {
+                    sal_uInt16 nTotChildren = pParent->GetChildCount();
+                    while (nTotChildren--)
+                    {
+                        vcl::Window* pChildWin = pParent->GetChild(nTotChildren);
+                        if (pChildWin && pChildWin->IsChart())
+                        {
+                            mpWindow = pChildWin;
+                            break;
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    return mpWindow.get();
+}
+
+tools::Rectangle LokChartHelper::GetChartBoundingBox()
+{
+    tools::Rectangle aBBox;
+    if (mpViewShell)
+    {
+        SfxInPlaceClient* pIPClient = mpViewShell->GetIPClient();
+        if (pIPClient)
+        {
+            vcl::Window* pRootWin = pIPClient->GetEditWin();
+            if (pRootWin)
+            {
+                vcl::Window* pWindow = GetWindow();
+                if (pWindow)
+                {
+                    // In all cases, the following code fragment
+                    // returns the chart bounding box in twips.
+                    MapMode aCWMapMode = pWindow->GetMapMode();
+                    double fXScale = aCWMapMode.GetScaleX();
+                    double fYScale = aCWMapMode.GetScaleY();
+                    Point aOffset = pWindow->GetOffsetPixelFrom(*pRootWin);
+                    aOffset.X() *= (TWIPS_PER_PIXEL / fXScale);
+                    aOffset.Y() *= (TWIPS_PER_PIXEL / fYScale);
+                    Size aSize = pWindow->GetSizePixel();
+                    aSize.Width() *= (TWIPS_PER_PIXEL / fXScale);
+                    aSize.Height() *= (TWIPS_PER_PIXEL / fYScale);
+                    aBBox = tools::Rectangle(aOffset, aSize);
+                }
+            }
+        }
+    }
+    return aBBox;
+}
+
+void LokChartHelper::Invalidate()
+{
+    mpWindow = nullptr;
+    mxDispatcher.clear();
+    mxController.clear();
+}
+
+bool LokChartHelper::Hit(const Point& aPos)
+{
+    if (mpViewShell)
+    {
+        vcl::Window* pChartWindow = GetWindow();
+        if (pChartWindow)
+        {
+            tools::Rectangle rChartBBox = GetChartBoundingBox();
+            return rChartBBox.IsInside(aPos);
+        }
+    }
+    return false;
+}
+
+bool LokChartHelper::HitAny(const Point& aPos)
+{
+    SfxViewShell* pViewShell = SfxViewShell::GetFirst();
+    while (pViewShell)
+    {
+        LokChartHelper aChartHelper(pViewShell);
+        if (aChartHelper.Hit(aPos))
+            return true;
+        pViewShell = SfxViewShell::GetNext(*pViewShell);
+    }
+    return false;
+}
+
+void LokChartHelper::PaintTile(VirtualDevice& rRenderContext, const tools::Rectangle& rTileRect)
+{
+    if (mpViewShell)
+    {
+        vcl::Window* pChartWindow = GetWindow();
+        if (pChartWindow)
+        {
+            tools::Rectangle aChartRect = GetChartBoundingBox();
+            tools::Rectangle aTestRect = rTileRect;
+            aTestRect.Intersection( aChartRect );
+            if (!aTestRect.IsEmpty())
+            {
+                Point aOffset( aChartRect.Left() - rTileRect.Left(), aChartRect.Top() - rTileRect.Top() );
+                Point aOffsetFromTile = lcl_TwipsToHMM(aOffset);
+                Size aSize = lcl_TwipsToHMM(aChartRect.GetSize());
+                tools::Rectangle aRectangle(Point(0,0), aSize);
+
+                bool bEnableMapMode = !pChartWindow->IsMapModeEnabled();
+                pChartWindow->EnableMapMode();
+                bool bRenderContextEnableMapMode = !rRenderContext.IsMapModeEnabled();
+                rRenderContext.EnableMapMode();
+
+                rRenderContext.Push(PushFlags::MAPMODE);
+
+                MapMode aCWMapMode = pChartWindow->GetMapMode();
+                aCWMapMode.SetScaleX(rRenderContext.GetMapMode().GetScaleX());
+                aCWMapMode.SetScaleY(rRenderContext.GetMapMode().GetScaleY());
+
+                aCWMapMode.SetOrigin(aOffsetFromTile);
+                rRenderContext.SetMapMode(aCWMapMode);
+
+                pChartWindow->Paint(rRenderContext, aRectangle);
+
+                rRenderContext.Pop();
+
+                if (bRenderContextEnableMapMode)
+                    rRenderContext.EnableMapMode(false);
+                if (bEnableMapMode)
+                    pChartWindow->EnableMapMode(false);
+            }
+        }
+    }
+}
+
+void LokChartHelper::PaintAllChartsOnTile(VirtualDevice& rDevice,
+                                          int nOutputWidth, int nOutputHeight,
+                                          int nTilePosX, int nTilePosY,
+                                          long nTileWidth, long nTileHeight)
+{
+    // Resizes the virtual device so to contain the entries context
+    rDevice.SetOutputSizePixel(Size(nOutputWidth, nOutputHeight));
+
+    rDevice.Push(PushFlags::MAPMODE);
+    MapMode aMapMode(rDevice.GetMapMode());
+
+    // Scaling. Must convert from pixels to twips. We know
+    // that VirtualDevices use a DPI of 96.
+    Fraction scaleX = Fraction(nOutputWidth, 96) * Fraction(1440L) / Fraction(nTileWidth);
+    Fraction scaleY = Fraction(nOutputHeight, 96) * Fraction(1440L) / Fraction(nTileHeight);
+    aMapMode.SetScaleX(scaleX);
+    aMapMode.SetScaleY(scaleY);
+    rDevice.SetMapMode(aMapMode);
+
+    tools::Rectangle aTileRect(Point(nTilePosX, nTilePosY), Size(nTileWidth, nTileHeight));
+    SfxViewShell* pViewShell = SfxViewShell::GetFirst();
+    while (pViewShell)
+    {
+        LokChartHelper aChartHelper(pViewShell);
+        aChartHelper.PaintTile(rDevice, aTileRect);
+        pViewShell = SfxViewShell::GetNext(*pViewShell);
+    }
+    rDevice.Pop();
+}
+
+bool LokChartHelper::postMouseEvent(int nType, int nX, int nY,
+                                    int nCount, int nButtons, int nModifier,
+                                    double fScaleX, double fScaleY)
+{
+    Point aMousePos(nX, nY);
+    vcl::Window* pChartWindow = GetWindow();
+    if (pChartWindow)
+    {
+        tools::Rectangle rChartBBox = GetChartBoundingBox();
+        if (rChartBBox.IsInside(aMousePos))
+        {
+            int nChartWinX = nX - rChartBBox.Left();
+            int nChartWinY = nY - rChartBBox.Top();
+
+            // chart window expects pixels, but the conversion factor
+            // can depend on the client zoom
+            Point aPos(nChartWinX * fScaleX, nChartWinY * fScaleY);
+            MouseEvent aEvent(aPos, nCount,
+                    MouseEventModifiers::SIMPLECLICK, nButtons, nModifier);
+
+            switch (nType)
+            {
+            case LOK_MOUSEEVENT_MOUSEBUTTONDOWN:
+                pChartWindow->MouseButtonDown(aEvent);
+                break;
+            case LOK_MOUSEEVENT_MOUSEBUTTONUP:
+                pChartWindow->MouseButtonUp(aEvent);
+                if (pChartWindow->IsTracking())
+                    pChartWindow->EndTracking(TrackingEventFlags::DontCallHdl);
+                break;
+            case LOK_MOUSEEVENT_MOUSEMOVE:
+                pChartWindow->MouseMove(aEvent);
+                break;
+            default:
+                assert(false);
+                break;
+            }
+            return true;
+        }
+    }
+    return false;
+}
+
+bool LokChartHelper::setTextSelection(int nType, int nX, int nY)
+{
+    tools::Rectangle rChartBBox = GetChartBoundingBox();
+    if (rChartBBox.IsInside(Point(nX, nY)))
+    {
+        css::uno::Reference<css::frame::XDispatch> xDispatcher = GetXDispatcher();
+        if (xDispatcher.is())
+        {
+            int nChartWinX = nX - rChartBBox.Left();
+            int nChartWinY = nY - rChartBBox.Top();
+
+            // no scale here the chart controller expects twips
+            // that are converted to hmm
+            util::URL aURL;
+            aURL.Path = "LOKSetTextSelection";
+            uno::Sequence< beans::PropertyValue > aArgs(3);
+            aArgs[0].Value <<= static_cast<sal_Int32>(nType);
+            aArgs[1].Value <<= static_cast<sal_Int32>(nChartWinX);
+            aArgs[2].Value <<= static_cast<sal_Int32>(nChartWinY);
+            xDispatcher->dispatch(aURL, aArgs);
+        }
+        return true;
+    }
+    return false;
+}
+
+bool LokChartHelper::setGraphicSelection(int nType, int nX, int nY,
+                                         double fScaleX, double fScaleY)
+{
+    tools::Rectangle rChartBBox = GetChartBoundingBox();
+    if (rChartBBox.IsInside(Point(nX, nY)))
+    {
+        int nChartWinX = nX - rChartBBox.Left();
+        int nChartWinY = nY - rChartBBox.Top();
+
+        vcl::Window* pChartWindow = GetWindow();
+
+        Point aPos(nChartWinX * fScaleX, nChartWinY * fScaleY);
+        switch (nType)
+        {
+        case LOK_SETGRAPHICSELECTION_START:
+            {
+                MouseEvent aClickEvent(aPos, 1, MouseEventModifiers::SIMPLECLICK, MOUSE_LEFT);
+                pChartWindow->MouseButtonDown(aClickEvent);
+                MouseEvent aMoveEvent(aPos, 0, MouseEventModifiers::SIMPLEMOVE, MOUSE_LEFT);
+                pChartWindow->MouseMove(aMoveEvent);
+            }
+            break;
+        case LOK_SETGRAPHICSELECTION_END:
+            {
+                MouseEvent aMoveEvent(aPos, 0, MouseEventModifiers::SIMPLEMOVE, MOUSE_LEFT);
+                pChartWindow->MouseMove(aMoveEvent);
+                MouseEvent aClickEvent(aPos, 1, MouseEventModifiers::SIMPLECLICK, MOUSE_LEFT);
+                pChartWindow->MouseButtonUp(aClickEvent);
+            }
+            break;
+        default:
+            assert(false);
+            break;
+        }
+        return true;
+    }
+    return false;
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sfx2/source/view/viewsh.cxx b/sfx2/source/view/viewsh.cxx
index bfb0552d2d7d..80c91ef25b7c 100644
--- a/sfx2/source/view/viewsh.cxx
+++ b/sfx2/source/view/viewsh.cxx
@@ -832,9 +832,11 @@ SfxInPlaceClient* SfxViewShell::GetUIActiveClient() const
     if ( !pClients )
         return nullptr;
 
+    bool bIsTiledRendering = comphelper::LibreOfficeKit::isActive();
+
     for (SfxInPlaceClient* pIPClient : *pClients)
     {
-        if ( pIPClient->IsObjectUIActive() )
+        if ( pIPClient->IsObjectUIActive() || ( bIsTiledRendering && pIPClient->IsObjectInPlaceActive() ) )
             return pIPClient;
     }
 
@@ -1464,6 +1466,17 @@ void SfxViewShell::afterCallbackRegistered()
 {
 }
 
+vcl::Window* SfxViewShell::GetEditWindowForActiveOLEObj() const
+{
+    vcl::Window* pEditWin = nullptr;
+    SfxInPlaceClient* pIPClient = GetIPClient();
+    if (pIPClient)
+    {
+        pEditWin = pIPClient->GetEditWin();
+    }
+    return pEditWin;
+}
+
 void SfxViewShell::NotifyCursor(SfxViewShell* /*pViewShell*/) const
 {
 }