Merge pull request 'Fix flipY in tiles' (#651) from fix/docx-renderer into release/v9.3.0

Reviewed-on: https://git.onlyoffice.com/ONLYOFFICE/core/pulls/651

DocxRenderer/src/logic/Document.cpp

@@ -648,11 +648,15 @@ namespace NSDocxRenderer
 		if ((nType > 0xFF) && (c_BrushTypeTexture == m_oCurrentPage.m_oBrush.Type))
 		{
 			double x = 0, y = 0, w = 0, h = 0;
+			if (m_oCurrentPage.IsCurrVectorClockwise())
+				h = -1; // to flip image later
+
 			if (m_oCurrentPage.m_oBrush.Image)
 				pInfo = m_oImageManager.WriteImage(m_oCurrentPage.m_oBrush.Image, x, y, w, h);
 			else
-				pInfo = m_oImageManager.WriteImage(m_oCurrentPage.m_oBrush.TexturePath, x, y, w, h);
+				pInfo = m_oImageManager.WriteImage(m_oCurrentPage.m_oBrush.TexturePath);
 		}
+
 		m_oCurrentPage.DrawPath(nType, pInfo);
 		return S_OK;
 	}
@@ -712,7 +716,7 @@ namespace NSDocxRenderer
 	}
 	HRESULT CDocument::DrawImageFromFile(const std::wstring& sVal, double fX, double fY, double fWidth, double fHeight)
 	{
-		m_oCurrentPage.WriteImage(m_oImageManager.WriteImage(sVal, fX, fY, fWidth, fHeight), fX, fY, fWidth, fHeight);
+		m_oCurrentPage.WriteImage(m_oImageManager.WriteImage(sVal), fX, fY, fWidth, fHeight);
 		return S_OK;
 	}
 	//------------------------------------------------------------------------------------------

DocxRenderer/src/logic/Page.cpp

@@ -277,6 +277,10 @@ namespace NSDocxRenderer
 			m_arShapes.push_back(shape);
 		}
 	}
+	bool CPage::IsCurrVectorClockwise() const
+	{
+		return m_oCurrVectorGraphics.IsClockwise();
+	}
 
 	void CPage::AddText(
 	        const PUINT pUnicodes,

DocxRenderer/src/logic/Page.h

@@ -68,6 +68,7 @@ namespace NSDocxRenderer
 		void PathEnd();
 		void PathClose();
 		void DrawPath(LONG lType, const std::shared_ptr<CImageInfo> pInfo);
+		bool IsCurrVectorClockwise() const;
 
 		void AddText(
 		        const PUINT pUnicodes,

DocxRenderer/src/logic/managers/ImageManager.cpp

@@ -147,7 +147,7 @@ namespace NSDocxRenderer
 		return GenerateImageID(pImage);
 	}
 
-	std::shared_ptr<CImageInfo> CImageManager::WriteImage(const std::wstring& strFile, double& x, double& y, double& width, double& height)
+	std::shared_ptr<CImageInfo> CImageManager::WriteImage(const std::wstring& strFile)
 	{
 		Aggplus::CImage image(strFile);
 		return GenerateImageID(&image);

DocxRenderer/src/logic/managers/ImageManager.h

@@ -20,14 +20,14 @@ namespace NSDocxRenderer
 		void Clear();
 
 		std::shared_ptr<CImageInfo> WriteImage(Aggplus::CImage* pImage, double& x, double& y, double& width, double& height);
-		std::shared_ptr<CImageInfo> WriteImage(const std::wstring& strFile, double& x, double& y, double& width, double& height);
+		std::shared_ptr<CImageInfo> WriteImage(const std::wstring& strFile);
 		std::shared_ptr<CImageInfo> GenerateImageID(Aggplus::CImage* pImage);
+
 		static CImageInfo::ImageType GetImageType(Aggplus::CImage* pFrame);
+		static void FlipY(Aggplus::CImage* pImage);
 
 	private:
 		std::shared_ptr<CImageInfo> GenerateImageID(const std::wstring& strFileName);
-		void FlipY(Aggplus::CImage* pImage);
-
 		int m_lMaxSizeImage {1200};
 		int m_lNextIDImage {0};
 		CCalculatorCRC32 m_oCRC;

DocxRenderer/src/resources/VectorGraphics.cpp

@@ -195,7 +195,7 @@ namespace NSDocxRenderer
 		double x0 = m_arData.back().points.back().x;
 		double y0 = m_arData.back().points.back().y;
 
-		std::list<Point> points = {{x1, y1}, {x2, y2}, {x3, y3}};
+		std::vector<Point> points = {{x1, y1}, {x2, y2}, {x3, y3}};
 		ePathCommandType type = ePathCommandType::pctCurve;
 		m_arData.push_back({type, points});
 
@@ -308,6 +308,48 @@ namespace NSDocxRenderer
 			}
 		}
 	}
+	void CVectorGraphics::Reverse()
+	{
+	}
+	bool CVectorGraphics::IsClockwise() const
+	{
+		if (m_arData.empty())
+			return false;
+
+		double area = 0;
+		double last_x = 0;
+		double last_y = 0;
+		bool is_first = true;
+		for (const auto& command : m_arData)
+		{
+			if (is_first)
+			{
+				is_first = false;
+				last_x = command.points.back().x;
+				last_y = command.points.back().y;
+				continue;
+			}
+			if (command.type == ePathCommandType::pctClose)
+				break;
+
+			const auto& points = command.points;
+			if (command.type == ePathCommandType::pctCurve)
+			{
+				area += 3.0 * ((points[2].y - last_y) * (points[0].x + points[1].x)
+				              - (points[2].x - last_x) * (points[0].y + points[1].y)
+				              + points[0].y * (last_x - points[1].x)
+				              - points[0].x * (last_y - points[1].y)
+				              + points[2].y * (points[1].x + last_x / 3.0)
+				              - points[2].x * (points[1].y + last_y / 3.0)) / 20.0;
+			}
+			else
+				area += (points[0].y * last_x - points[0].x * last_y) / 2.0;
+
+			last_x = command.points.back().x;
+			last_y = command.points.back().y;
+		}
+		return area >= 0;
+	}
 
 	// ClipRegionTypeWinding = 0x0000;
 	// ClipRegionTypeEvenOdd = 0x0001;

DocxRenderer/src/resources/VectorGraphics.h

@@ -31,7 +31,7 @@ namespace NSDocxRenderer
 		struct CPathCommand
 		{
 			ePathCommandType type;
-			std::list<Point> points;
+			std::vector<Point> points;
 		};
 
 		CVectorGraphics() noexcept;
@@ -79,6 +79,7 @@ namespace NSDocxRenderer
 		void Rotate(const double& rotation);
 		void Transform(const Aggplus::CMatrix& matrix);
 		void DrawOnRenderer(IRenderer* renderer) const noexcept;
+		bool IsClockwise() const;
 
 		static CVectorGraphics CalcBoolean(const CVectorGraphics& vg1, const CVectorGraphics& vg2, long clipType, long fillType = c_nWindingFillMode, bool isLuminosity = false);