tdf#107019 EMF+ Add support for import EmfPlusRecordTypeDrawBeziers record

EmfPlusDrawBeziers record defines the pen strokes for drawing a Bezier spline.

Change-Id: I6ae08a861bcbadd373741781af0011528947243e
Reviewed-on: https://gerrit.libreoffice.org/36280
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Bartosz Kosiorek <gang65@poczta.onet.pl>

1 files changed, 49 insertions, 1 deletions

diff --git a/cppcanvas/source/mtfrenderer/emfplus.cxx b/cppcanvas/source/mtfrenderer/emfplus.cxx
index 7c33b28c213d..73c488c2abba 100644
--- a/cppcanvas/source/mtfrenderer/emfplus.cxx
+++ b/cppcanvas/source/mtfrenderer/emfplus.cxx
@@ -20,6 +20,7 @@
 #include <tools/stream.hxx>
 #include <vcl/metaact.hxx>
 #include <vcl/graphicfilter.hxx>
+#include <basegfx/curve/b2dcubicbezier.hxx>
 #include <basegfx/tools/canvastools.hxx>
 #include <basegfx/tools/gradienttools.hxx>
 #include <basegfx/tools/tools.hxx>
@@ -82,7 +83,7 @@ namespace
 //TODO EmfPlusRecordTypeFillClosedCurve 0x4016
 //TODO EmfPlusRecordTypeDrawClosedCurve 0x4017
 //TODO EmfPlusRecordTypeDrawCurve 0x4018
-//TODO EmfPlusRecordTypeDrawBeziers 0x4019
+#define EmfPlusRecordTypeDrawBeziers 0x4019
 #define EmfPlusRecordTypeDrawImage 0x401A
 #define EmfPlusRecordTypeDrawImagePoints 0x401B
 #define EmfPlusRecordTypeDrawString 0x401C
@@ -155,6 +156,7 @@ const char* emfTypeToName(sal_uInt16 type)
         case EmfPlusRecordTypeFillPie: return "EmfPlusRecordTypeFillPie";
         case EmfPlusRecordTypeFillPath: return "EmfPlusRecordTypeFillPath";
         case EmfPlusRecordTypeDrawPath: return "EmfPlusRecordTypeDrawPath";
+        case EmfPlusRecordTypeDrawBeziers: return "EmfPlusRecordTypeDrawBeziers";
         case EmfPlusRecordTypeDrawImage: return "EmfPlusRecordTypeDrawImage";
         case EmfPlusRecordTypeDrawImagePoints: return "EmfPlusRecordTypeDrawImagePoints";
         case EmfPlusRecordTypeDrawString: return "EmfPlusRecordTypeDrawString";
@@ -1066,6 +1068,52 @@ namespace cppcanvas
 
                             break;
                         }
+                    case EmfPlusRecordTypeDrawBeziers:
+                        {
+                            sal_uInt32 aCount;
+                            float x1, y1, x2, y2, x3, y3, x4, y4;
+                            ::basegfx::B2DPoint aStartPoint, aControlPointA, aControlPointB, aEndPoint;
+                            ::basegfx::B2DPolygon aPolygon;
+                            rMF.ReadUInt32( aCount );
+
+                            SAL_INFO("cppcanvas.emf", "EMF+ DrawBeziers slot: " << (flags & 0xff) << "Number of points: " << aCount);
+
+                            SAL_WARN_IF( ( aCount - 1 ) % 3 != 0, "cppcanvas.emf", "EMF+\t Bezier Draw not support number of points other than 4, 7, 10, 13, 16...");
+
+                            if( aCount < 4 )
+                            {
+                                SAL_WARN("cppcanvas.emf", "EMF+\t Bezier Draw does not support less than 4 points. Number of points: " << aCount);
+                                break;
+                            }
+
+                            ReadPoint (rMF, x1, y1, flags);
+                            // We need to add first starting point
+                            aStartPoint = Map (x1, y1);
+                            aPolygon.append( aStartPoint );
+
+                            for( sal_uInt32 i = 4; i <= aCount; i += 3 )
+                            {
+                                ReadPoint (rMF, x2, y2, flags);
+                                ReadPoint (rMF, x3, y3, flags);
+                                ReadPoint (rMF, x4, y4, flags);
+
+                                SAL_INFO("cppcanvas.emf", "EMF+\t Bezier points: " << x1 << "," << y1 << " " << x2 << "," << y2 << " " << x3 << "," << y3 << " " << x4 << "," << y4);
+
+                                aStartPoint = Map (x1, y1);
+                                aControlPointA = Map (x2, y2);
+                                aControlPointB = Map (x3, y3);
+                                aEndPoint = Map (x4, y4);
+
+                                ::basegfx::B2DCubicBezier cubicBezier( aStartPoint, aControlPointA, aControlPointB, aEndPoint );
+                                cubicBezier.adaptiveSubdivideByDistance( aPolygon, 10.0 );
+                                EMFPPlusDrawPolygon( ::basegfx::B2DPolyPolygon( aPolygon ), rFactoryParms,
+                                                     rState, rCanvas, flags & 0xff );
+                                // The ending coordinate of one Bezier curve is the starting coordinate of the next.
+                                x1 = x4;
+                                y1 = y4;
+                            }
+                            break;
+                        }
                     case EmfPlusRecordTypeDrawImage:
                     case EmfPlusRecordTypeDrawImagePoints:
                         {