excelize/shape.go

// Copyright 2016 - 2023 The excelize Authors. All rights reserved. Use of
// this source code is governed by a BSD-style license that can be found in
// the LICENSE file.
//
// Package excelize providing a set of functions that allow you to write to and
// read from XLAM / XLSM / XLSX / XLTM / XLTX files. Supports reading and
// writing spreadsheet documents generated by Microsoft Excel™ 2007 and later.
// Supports complex components by high compatibility, and provided streaming
// API for generating or reading data from a worksheet with huge amounts of
// data. This library needs Go version 1.16 or later.

package excelize

import (
	"strconv"
	"strings"
)

// parseShapeOptions provides a function to parse the format settings of the
// shape with default value.
func parseShapeOptions(opts *Shape) (*Shape, error) {
	if opts == nil {
		return nil, ErrParameterInvalid
	}
	if opts.Type == "" {
		return nil, ErrParameterInvalid
	}
	if opts.Width == 0 {
		opts.Width = defaultShapeSize
	}
	if opts.Height == 0 {
		opts.Height = defaultShapeSize
	}
	if opts.Format.PrintObject == nil {
		opts.Format.PrintObject = boolPtr(true)
	}
	if opts.Format.Locked == nil {
		opts.Format.Locked = boolPtr(false)
	}
	if opts.Format.ScaleX == 0 {
		opts.Format.ScaleX = defaultDrawingScale
	}
	if opts.Format.ScaleY == 0 {
		opts.Format.ScaleY = defaultDrawingScale
	}
	if opts.Line.Width == nil {
		opts.Line.Width = float64Ptr(defaultShapeLineWidth)
	}
	return opts, nil
}

// AddShape provides the method to add shape in a sheet by given worksheet
// name and shape format set (such as offset, scale, aspect ratio setting and
// print settings). For example, add text box (rect shape) in Sheet1:
//
//	lineWidth := 1.2
//	err := f.AddShape("Sheet1",
//	    &excelize.Shape{
//	        Cell: "G6",
//	        Type: "rect",
//	        Line: excelize.ShapeLine{Color: "4286F4", Width: &lineWidth},
//	        Fill: excelize.Fill{Color: []string{"8EB9FF"}, Pattern: 1},
//	        Paragraph: []excelize.RichTextRun{
//	            {
//	                Text: "Rectangle Shape",
//	                Font: &excelize.Font{
//	                    Bold:      true,
//	                    Italic:    true,
//	                    Family:    "Times New Roman",
//	                    Size:      18,
//	                    Color:     "777777",
//	                    Underline: "sng",
//	                },
//	            },
//	        },
//	        Width:  180,
//	        Height: 40,
//	    },
//	)
//
// The following shows the type of shape supported by excelize:
//
//	accentBorderCallout1 (Callout 1 with Border and Accent Shape)
//	accentBorderCallout2 (Callout 2 with Border and Accent Shape)
//	accentBorderCallout3 (Callout 3 with Border and Accent Shape)
//	accentCallout1 (Callout 1 Shape)
//	accentCallout2 (Callout 2 Shape)
//	accentCallout3 (Callout 3 Shape)
//	actionButtonBackPrevious (Back or Previous Button Shape)
//	actionButtonBeginning (Beginning Button Shape)
//	actionButtonBlank (Blank Button Shape)
//	actionButtonDocument (Document Button Shape)
//	actionButtonEnd (End Button Shape)
//	actionButtonForwardNext (Forward or Next Button Shape)
//	actionButtonHelp (Help Button Shape)
//	actionButtonHome (Home Button Shape)
//	actionButtonInformation (Information Button Shape)
//	actionButtonMovie (Movie Button Shape)
//	actionButtonReturn (Return Button Shape)
//	actionButtonSound (Sound Button Shape)
//	arc (Curved Arc Shape)
//	bentArrow (Bent Arrow Shape)
//	bentConnector2 (Bent Connector 2 Shape)
//	bentConnector3 (Bent Connector 3 Shape)
//	bentConnector4 (Bent Connector 4 Shape)
//	bentConnector5 (Bent Connector 5 Shape)
//	bentUpArrow (Bent Up Arrow Shape)
//	bevel (Bevel Shape)
//	blockArc (Block Arc Shape)
//	borderCallout1 (Callout 1 with Border Shape)
//	borderCallout2 (Callout 2 with Border Shape)
//	borderCallout3 (Callout 3 with Border Shape)
//	bracePair (Brace Pair Shape)
//	bracketPair (Bracket Pair Shape)
//	callout1 (Callout 1 Shape)
//	callout2 (Callout 2 Shape)
//	callout3 (Callout 3 Shape)
//	can (Can Shape)
//	chartPlus (Chart Plus Shape)
//	chartStar (Chart Star Shape)
//	chartX (Chart X Shape)
//	chevron (Chevron Shape)
//	chord (Chord Shape)
//	circularArrow (Circular Arrow Shape)
//	cloud (Cloud Shape)
//	cloudCallout (Callout Cloud Shape)
//	corner (Corner Shape)
//	cornerTabs (Corner Tabs Shape)
//	cube (Cube Shape)
//	curvedConnector2 (Curved Connector 2 Shape)
//	curvedConnector3 (Curved Connector 3 Shape)
//	curvedConnector4 (Curved Connector 4 Shape)
//	curvedConnector5 (Curved Connector 5 Shape)
//	curvedDownArrow (Curved Down Arrow Shape)
//	curvedLeftArrow (Curved Left Arrow Shape)
//	curvedRightArrow (Curved Right Arrow Shape)
//	curvedUpArrow (Curved Up Arrow Shape)
//	decagon (Decagon Shape)
//	diagStripe (Diagonal Stripe Shape)
//	diamond (Diamond Shape)
//	dodecagon (Dodecagon Shape)
//	donut (Donut Shape)
//	doubleWave (Double Wave Shape)
//	downArrow (Down Arrow Shape)
//	downArrowCallout (Callout Down Arrow Shape)
//	ellipse (Ellipse Shape)
//	ellipseRibbon (Ellipse Ribbon Shape)
//	ellipseRibbon2 (Ellipse Ribbon 2 Shape)
//	flowChartAlternateProcess (Alternate Process Flow Shape)
//	flowChartCollate (Collate Flow Shape)
//	flowChartConnector (Connector Flow Shape)
//	flowChartDecision (Decision Flow Shape)
//	flowChartDelay (Delay Flow Shape)
//	flowChartDisplay (Display Flow Shape)
//	flowChartDocument (Document Flow Shape)
//	flowChartExtract (Extract Flow Shape)
//	flowChartInputOutput (Input Output Flow Shape)
//	flowChartInternalStorage (Internal Storage Flow Shape)
//	flowChartMagneticDisk (Magnetic Disk Flow Shape)
//	flowChartMagneticDrum (Magnetic Drum Flow Shape)
//	flowChartMagneticTape (Magnetic Tape Flow Shape)
//	flowChartManualInput (Manual Input Flow Shape)
//	flowChartManualOperation (Manual Operation Flow Shape)
//	flowChartMerge (Merge Flow Shape)
//	flowChartMultidocument (Multi-Document Flow Shape)
//	flowChartOfflineStorage (Offline Storage Flow Shape)
//	flowChartOffpageConnector (Off-Page Connector Flow Shape)
//	flowChartOnlineStorage (Online Storage Flow Shape)
//	flowChartOr (Or Flow Shape)
//	flowChartPredefinedProcess (Predefined Process Flow Shape)
//	flowChartPreparation (Preparation Flow Shape)
//	flowChartProcess (Process Flow Shape)
//	flowChartPunchedCard (Punched Card Flow Shape)
//	flowChartPunchedTape (Punched Tape Flow Shape)
//	flowChartSort (Sort Flow Shape)
//	flowChartSummingJunction (Summing Junction Flow Shape)
//	flowChartTerminator (Terminator Flow Shape)
//	foldedCorner (Folded Corner Shape)
//	frame (Frame Shape)
//	funnel (Funnel Shape)
//	gear6 (Gear 6 Shape)
//	gear9 (Gear 9 Shape)
//	halfFrame (Half Frame Shape)
//	heart (Heart Shape)
//	heptagon (Heptagon Shape)
//	hexagon (Hexagon Shape)
//	homePlate (Home Plate Shape)
//	horizontalScroll (Horizontal Scroll Shape)
//	irregularSeal1 (Irregular Seal 1 Shape)
//	irregularSeal2 (Irregular Seal 2 Shape)
//	leftArrow (Left Arrow Shape)
//	leftArrowCallout (Callout Left Arrow Shape)
//	leftBrace (Left Brace Shape)
//	leftBracket (Left Bracket Shape)
//	leftCircularArrow (Left Circular Arrow Shape)
//	leftRightArrow (Left Right Arrow Shape)
//	leftRightArrowCallout (Callout Left Right Arrow Shape)
//	leftRightCircularArrow (Left Right Circular Arrow Shape)
//	leftRightRibbon (Left Right Ribbon Shape)
//	leftRightUpArrow (Left Right Up Arrow Shape)
//	leftUpArrow (Left Up Arrow Shape)
//	lightningBolt (Lightning Bolt Shape)
//	line (Line Shape)
//	lineInv (Line Inverse Shape)
//	mathDivide (Divide Math Shape)
//	mathEqual (Equal Math Shape)
//	mathMinus (Minus Math Shape)
//	mathMultiply (Multiply Math Shape)
//	mathNotEqual (Not Equal Math Shape)
//	mathPlus (Plus Math Shape)
//	moon (Moon Shape)
//	nonIsoscelesTrapezoid (Non-Isosceles Trapezoid Shape)
//	noSmoking (No Smoking Shape)
//	notchedRightArrow (Notched Right Arrow Shape)
//	octagon (Octagon Shape)
//	parallelogram (Parallelogram Shape)
//	pentagon (Pentagon Shape)
//	pie (Pie Shape)
//	pieWedge (Pie Wedge Shape)
//	plaque (Plaque Shape)
//	plaqueTabs (Plaque Tabs Shape)
//	plus (Plus Shape)
//	quadArrow (Quad-Arrow Shape)
//	quadArrowCallout (Callout Quad-Arrow Shape)
//	rect (Rectangle Shape)
//	ribbon (Ribbon Shape)
//	ribbon2 (Ribbon 2 Shape)
//	rightArrow (Right Arrow Shape)
//	rightArrowCallout (Callout Right Arrow Shape)
//	rightBrace (Right Brace Shape)
//	rightBracket (Right Bracket Shape)
//	round1Rect (One Round Corner Rectangle Shape)
//	round2DiagRect (Two Diagonal Round Corner Rectangle Shape)
//	round2SameRect (Two Same-side Round Corner Rectangle Shape)
//	roundRect (Round Corner Rectangle Shape)
//	rtTriangle (Right Triangle Shape)
//	smileyFace (Smiley Face Shape)
//	snip1Rect (One Snip Corner Rectangle Shape)
//	snip2DiagRect (Two Diagonal Snip Corner Rectangle Shape)
//	snip2SameRect (Two Same-side Snip Corner Rectangle Shape)
//	snipRoundRect (One Snip One Round Corner Rectangle Shape)
//	squareTabs (Square Tabs Shape)
//	star10 (Ten Pointed Star Shape)
//	star12 (Twelve Pointed Star Shape)
//	star16 (Sixteen Pointed Star Shape)
//	star24 (Twenty Four Pointed Star Shape)
//	star32 (Thirty Two Pointed Star Shape)
//	star4 (Four Pointed Star Shape)
//	star5 (Five Pointed Star Shape)
//	star6 (Six Pointed Star Shape)
//	star7 (Seven Pointed Star Shape)
//	star8 (Eight Pointed Star Shape)
//	straightConnector1 (Straight Connector 1 Shape)
//	stripedRightArrow (Striped Right Arrow Shape)
//	sun (Sun Shape)
//	swooshArrow (Swoosh Arrow Shape)
//	teardrop (Teardrop Shape)
//	trapezoid (Trapezoid Shape)
//	triangle (Triangle Shape)
//	upArrow (Up Arrow Shape)
//	upArrowCallout (Callout Up Arrow Shape)
//	upDownArrow (Up Down Arrow Shape)
//	upDownArrowCallout (Callout Up Down Arrow Shape)
//	uturnArrow (U-Turn Arrow Shape)
//	verticalScroll (Vertical Scroll Shape)
//	wave (Wave Shape)
//	wedgeEllipseCallout (Callout Wedge Ellipse Shape)
//	wedgeRectCallout (Callout Wedge Rectangle Shape)
//	wedgeRoundRectCallout (Callout Wedge Round Rectangle Shape)
//
// The following shows the type of text underline supported by excelize:
//
//	none
//	words
//	sng
//	dbl
//	heavy
//	dotted
//	dottedHeavy
//	dash
//	dashHeavy
//	dashLong
//	dashLongHeavy
//	dotDash
//	dotDashHeavy
//	dotDotDash
//	dotDotDashHeavy
//	wavy
//	wavyHeavy
//	wavyDbl
func (f *File) AddShape(sheet string, opts *Shape) error {
	options, err := parseShapeOptions(opts)
	if err != nil {
		return err
	}
	// Read sheet data
	ws, err := f.workSheetReader(sheet)
	if err != nil {
		return err
	}
	// Add first shape for given sheet, create xl/drawings/ and xl/drawings/_rels/ folder.
	drawingID := f.countDrawings() + 1
	drawingXML := "xl/drawings/drawing" + strconv.Itoa(drawingID) + ".xml"
	sheetRelationshipsDrawingXML := "../drawings/drawing" + strconv.Itoa(drawingID) + ".xml"

	if ws.Drawing != nil {
		// The worksheet already has a shape or chart relationships, use the relationships drawing ../drawings/drawing%d.xml.
		sheetRelationshipsDrawingXML = f.getSheetRelationshipsTargetByID(sheet, ws.Drawing.RID)
		drawingID, _ = strconv.Atoi(strings.TrimSuffix(strings.TrimPrefix(sheetRelationshipsDrawingXML, "../drawings/drawing"), ".xml"))
		drawingXML = strings.ReplaceAll(sheetRelationshipsDrawingXML, "..", "xl")
	} else {
		// Add first shape for given sheet.
		sheetXMLPath, _ := f.getSheetXMLPath(sheet)
		sheetRels := "xl/worksheets/_rels/" + strings.TrimPrefix(sheetXMLPath, "xl/worksheets/") + ".rels"
		rID := f.addRels(sheetRels, SourceRelationshipDrawingML, sheetRelationshipsDrawingXML, "")
		f.addSheetDrawing(sheet, rID)
		f.addSheetNameSpace(sheet, SourceRelationship)
	}
	if err = f.addDrawingShape(sheet, drawingXML, opts.Cell, options); err != nil {
		return err
	}
	return f.addContentTypePart(drawingID, "drawings")
}

// twoCellAnchorShape create a two cell anchor shape size placeholder for a
// group, a shape, or a drawing element.
func (f *File) twoCellAnchorShape(sheet, drawingXML, cell string, width, height uint, format GraphicOptions) (*xlsxWsDr, *xdrCellAnchor, int, error) {
	fromCol, fromRow, err := CellNameToCoordinates(cell)
	if err != nil {
		return nil, nil, 0, err
	}
	w := int(float64(width) * format.ScaleX)
	h := int(float64(height) * format.ScaleY)
	colStart, rowStart, colEnd, rowEnd, x2, y2 := f.positionObjectPixels(sheet, fromCol, fromRow, format.OffsetX, format.OffsetY, w, h)
	content, cNvPrID, err := f.drawingParser(drawingXML)
	if err != nil {
		return content, nil, cNvPrID, err
	}
	twoCellAnchor := xdrCellAnchor{}
	twoCellAnchor.EditAs = format.Positioning
	from := xlsxFrom{}
	from.Col = colStart
	from.ColOff = format.OffsetX * EMU
	from.Row = rowStart
	from.RowOff = format.OffsetY * EMU
	to := xlsxTo{}
	to.Col = colEnd
	to.ColOff = x2 * EMU
	to.Row = rowEnd
	to.RowOff = y2 * EMU
	twoCellAnchor.From = &from
	twoCellAnchor.To = &to
	return content, &twoCellAnchor, cNvPrID, err
}

// addDrawingShape provides a function to add preset geometry by given sheet,
// drawingXML and format sets.
func (f *File) addDrawingShape(sheet, drawingXML, cell string, opts *Shape) error {
	content, twoCellAnchor, cNvPrID, err := f.twoCellAnchorShape(
		sheet, drawingXML, cell, opts.Width, opts.Height, opts.Format)
	if err != nil {
		return err
	}
	var solidColor string
	if len(opts.Fill.Color) == 1 {
		solidColor = opts.Fill.Color[0]
	}
	shape := xdrSp{
		Macro: opts.Macro,
		NvSpPr: &xdrNvSpPr{
			CNvPr: &xlsxCNvPr{
				ID:   cNvPrID,
				Name: "Shape " + strconv.Itoa(cNvPrID),
			},
			CNvSpPr: &xdrCNvSpPr{
				TxBox: true,
			},
		},
		SpPr: &xlsxSpPr{
			PrstGeom: xlsxPrstGeom{
				Prst: opts.Type,
			},
		},
		Style: &xdrStyle{
			LnRef:     setShapeRef(opts.Line.Color, 2),
			FillRef:   setShapeRef(solidColor, 1),
			EffectRef: setShapeRef("", 0),
			FontRef: &aFontRef{
				Idx: "minor",
				SchemeClr: &attrValString{
					Val: stringPtr("tx1"),
				},
			},
		},
		TxBody: &xdrTxBody{
			BodyPr: &aBodyPr{
				VertOverflow: "clip",
				HorzOverflow: "clip",
				Wrap:         "none",
				RtlCol:       false,
				Anchor:       "t",
			},
		},
	}
	if *opts.Line.Width != 1 {
		shape.SpPr.Ln = xlsxLineProperties{
			W: f.ptToEMUs(*opts.Line.Width),
		}
	}
	defaultFont, err := f.GetDefaultFont()
	if err != nil {
		return err
	}
	if len(opts.Paragraph) < 1 {
		opts.Paragraph = []RichTextRun{
			{
				Font: &Font{
					Bold:      false,
					Italic:    false,
					Underline: "none",
					Family:    defaultFont,
					Size:      11,
					Color:     "000000",
				},
				Text: " ",
			},
		}
	}
	for _, p := range opts.Paragraph {
		u := "none"
		font := &Font{}
		if p.Font != nil {
			font = p.Font
		}
		if idx := inStrSlice(supportedDrawingUnderlineTypes, font.Underline, true); idx != -1 {
			u = supportedDrawingUnderlineTypes[idx]
		}
		text := p.Text
		if text == "" {
			text = " "
		}
		paragraph := &aP{
			R: &aR{
				RPr: aRPr{
					I:       font.Italic,
					B:       font.Bold,
					Lang:    "en-US",
					AltLang: "en-US",
					U:       u,
					Sz:      font.Size * 100,
					Latin:   &xlsxCTTextFont{Typeface: font.Family},
				},
				T: text,
			},
			EndParaRPr: &aEndParaRPr{
				Lang: "en-US",
			},
		}
		srgbClr := strings.ReplaceAll(strings.ToUpper(font.Color), "#", "")
		if len(srgbClr) == 6 {
			paragraph.R.RPr.SolidFill = &aSolidFill{
				SrgbClr: &attrValString{
					Val: stringPtr(srgbClr),
				},
			}
		}
		shape.TxBody.P = append(shape.TxBody.P, paragraph)
	}
	twoCellAnchor.Sp = &shape
	twoCellAnchor.ClientData = &xdrClientData{
		FLocksWithSheet:  *opts.Format.Locked,
		FPrintsWithSheet: *opts.Format.PrintObject,
	}
	content.TwoCellAnchor = append(content.TwoCellAnchor, twoCellAnchor)
	f.Drawings.Store(drawingXML, content)
	return err
}

// setShapeRef provides a function to set color with hex model by given actual
// color value.
func setShapeRef(color string, i int) *aRef {
	if color == "" {
		return &aRef{
			Idx: 0,
			ScrgbClr: &aScrgbClr{
				R: 0,
				G: 0,
				B: 0,
			},
		}
	}
	return &aRef{
		Idx: i,
		SrgbClr: &attrValString{
			Val: stringPtr(strings.ReplaceAll(strings.ToUpper(color), "#", "")),
		},
	}
}