text: /* -*- 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 <test/outputdevice.hxx>
  
  namespace vcl::test
  {
  namespace
  {
  basegfx::B2DPolygon createPolygonOffset(tools::Rectangle const& rRect, int nOffset, int nFix = 0)
  {
      // Note: According to https://lists.freedesktop.org/archives/libreoffice/2019-November/083709.html
      // filling polygons always skips the right-most and bottom-most pixels, in order to avoid
      // overlaps when drawing adjacent polygons. Specifying nFix = 1 allows to visually compensate
      // for this by making the polygon explicitly larger.
      basegfx::B2DPolygon aPolygon{
          basegfx::B2DPoint(rRect.Left() + nOffset, rRect.Top() + nOffset),
          basegfx::B2DPoint(rRect.Right() - nOffset + nFix, rRect.Top() + nOffset),
          basegfx::B2DPoint(rRect.Right() - nOffset + nFix, rRect.Bottom() - nOffset + nFix),
          basegfx::B2DPoint(rRect.Left() + nOffset, rRect.Bottom() - nOffset + nFix),
      };
      aPolygon.setClosed(true);
      return aPolygon;
  }
  
  } // end anonymous namespace
  
  Bitmap OutputDeviceTestPolyPolygonB2D::setupRectangle(bool bEnableAA)
  {
      initialSetup(13, 13, constBackgroundColor, bEnableAA);
  
      mpVirtualDevice->SetLineColor(constLineColor);
      mpVirtualDevice->SetFillColor();
  
      basegfx::B2DPolyPolygon aPolyPolygon;
      aPolyPolygon.append(createPolygonOffset(maVDRectangle, 2));
      aPolyPolygon.append(createPolygonOffset(maVDRectangle, 5));
  
      mpVirtualDevice->DrawPolyPolygon(aPolyPolygon);
  
      return mpVirtualDevice->GetBitmap(maVDRectangle.TopLeft(), maVDRectangle.GetSize());
  }
  
  Bitmap OutputDeviceTestPolyPolygonB2D::setupFilledRectangle(bool useLineColor)
  {
      initialSetup(13, 13, constBackgroundColor);
  
      if (useLineColor)
          mpVirtualDevice->SetLineColor(constLineColor);
      else
          mpVirtualDevice->SetLineColor();
      mpVirtualDevice->SetFillColor(constFillColor);
  
      basegfx::B2DPolyPolygon aPolyPolygon(
          createPolygonOffset(maVDRectangle, 2, useLineColor ? 0 : 1));
  
      mpVirtualDevice->DrawPolyPolygon(aPolyPolygon);
  
      return mpVirtualDevice->GetBitmap(maVDRectangle.TopLeft(), maVDRectangle.GetSize());
  }
  } // end namespace vcl::test
  
  /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
  