mirror of
https://github.com/unidoc/unipdf.git
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364 lines
11 KiB
Go
364 lines
11 KiB
Go
package creator
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import (
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"github.com/unidoc/unidoc/pdf/contentstream/draw"
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"github.com/unidoc/unidoc/pdf/model"
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)
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const (
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doubleBorderAdjustment = 1
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)
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// border represents cell border
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type border struct {
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x float64 // Upper left corner
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y float64
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width float64
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height float64
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fillColor *model.PdfColorDeviceRGB
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borderColorLeft *model.PdfColorDeviceRGB
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borderWidthLeft float64
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borderColorBottom *model.PdfColorDeviceRGB
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borderWidthBottom float64
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borderColorRight *model.PdfColorDeviceRGB
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borderWidthRight float64
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borderColorTop *model.PdfColorDeviceRGB
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borderWidthTop float64
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LineStyle draw.LineStyle
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StyleLeft CellBorderStyle
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StyleRight CellBorderStyle
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StyleTop CellBorderStyle
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StyleBottom CellBorderStyle
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}
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// NewBorder returns and instance of border
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func NewBorder(x, y, width, height float64) *border {
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border := &border{}
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border.x = x
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border.y = y
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border.width = width
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border.height = height
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border.borderColorTop = model.NewPdfColorDeviceRGB(0, 0, 0)
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border.borderColorBottom = model.NewPdfColorDeviceRGB(0, 0, 0)
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border.borderColorLeft = model.NewPdfColorDeviceRGB(0, 0, 0)
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border.borderColorRight = model.NewPdfColorDeviceRGB(0, 0, 0)
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border.borderWidthTop = 1
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border.borderWidthBottom = 1
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border.borderWidthLeft = 1
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border.borderWidthRight = 1
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border.LineStyle = draw.LineStyleSolid
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return border
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}
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// GetCoords returns coordinates of border
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func (border *border) GetCoords() (float64, float64) {
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return border.x, border.y
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}
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// SetWidthLeft sets border width for left
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func (border *border) SetWidthLeft(bw float64) {
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border.borderWidthLeft = bw
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}
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// SetColorLeft sets border color for left
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func (border *border) SetColorLeft(col Color) {
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border.borderColorLeft = model.NewPdfColorDeviceRGB(col.ToRGB())
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}
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// SetWidthBottom sets border width for bottom
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func (border *border) SetWidthBottom(bw float64) {
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border.borderWidthBottom = bw
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}
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// SetColorBottom sets border color for bottom
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func (border *border) SetColorBottom(col Color) {
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border.borderColorBottom = model.NewPdfColorDeviceRGB(col.ToRGB())
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}
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// SetWidthRight sets border width for right
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func (border *border) SetWidthRight(bw float64) {
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border.borderWidthRight = bw
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}
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// SetColorRight sets border color for right
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func (border *border) SetColorRight(col Color) {
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border.borderColorRight = model.NewPdfColorDeviceRGB(col.ToRGB())
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}
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// SetWidthTop sets border width for top
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func (border *border) SetWidthTop(bw float64) {
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border.borderWidthTop = bw
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}
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// SetColorTop sets border color for top
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func (border *border) SetColorTop(col Color) {
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border.borderColorTop = model.NewPdfColorDeviceRGB(col.ToRGB())
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}
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// SetFillColor sets background color for border
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func (border *border) SetFillColor(col Color) {
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border.fillColor = model.NewPdfColorDeviceRGB(col.ToRGB())
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}
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// GeneratePageBlocks creates drawable
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func (border *border) GeneratePageBlocks(ctx DrawContext) ([]*Block, DrawContext, error) {
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block := NewBlock(ctx.PageWidth, ctx.PageHeight)
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startX := border.x
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startY := ctx.PageHeight - border.y
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// Width height adjustment for double border
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autoTopAdjustmentOnLeft := border.borderWidthLeft * doubleBorderAdjustment
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autoTopAdjustmentOnRight := border.borderWidthRight * doubleBorderAdjustment
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autoRightAdjustmentOnTop := border.borderWidthTop * doubleBorderAdjustment
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autoRightAdjustmentOnBottom := border.borderWidthBottom * doubleBorderAdjustment
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autoLeftAdjustmentOnTop := border.borderWidthTop * doubleBorderAdjustment
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autoLeftAdjustmentOnBottom := border.borderWidthBottom * doubleBorderAdjustment
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autoBottomAdjustmentOnLeft := border.borderWidthLeft * doubleBorderAdjustment
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autoBottomAdjustmentOnRight := border.borderWidthRight * doubleBorderAdjustment
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if border.fillColor != nil {
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drawrect := draw.Rectangle{
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Opacity: 1.0,
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X: border.x + (border.borderWidthLeft * 3) - 0.5,
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Y: (ctx.PageHeight - border.y - border.height) + (border.borderWidthLeft * 2) - 0.5,
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Height: border.height - (border.borderWidthBottom * 3),
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Width: border.width - (border.borderWidthRight * 3),
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}
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drawrect.FillEnabled = true
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drawrect.FillColor = border.fillColor
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drawrect.BorderEnabled = false
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contents, _, err := drawrect.Draw("")
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if err != nil {
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return nil, ctx, err
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}
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err = block.addContentsByString(string(contents))
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if err != nil {
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return nil, ctx, err
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}
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}
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if border.borderWidthTop != 0 {
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y1 := startY
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y2 := startY
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if border.StyleTop == CellBorderStyleDoubleTop {
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// Line Top
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lineTop := draw.Line{
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LineWidth: border.borderWidthTop,
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Opacity: 1.0,
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LineColor: border.borderColorTop,
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LineEndingStyle1: draw.LineEndingStyleNone,
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LineEndingStyle2: draw.LineEndingStyleNone,
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X1: startX + autoTopAdjustmentOnLeft + 1, // +1 for corner adjustment
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Y1: y1 - (doubleBorderAdjustment * border.borderWidthTop),
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X2: ((startX + border.width) - autoTopAdjustmentOnRight) + 0.5, // +0.5 for corner adjustment
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Y2: y2 - (doubleBorderAdjustment * border.borderWidthTop),
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LineStyle: border.LineStyle,
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}
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contentsTop, _, err := lineTop.Draw("")
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if err != nil {
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return nil, ctx, err
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}
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err = block.addContentsByString(string(contentsTop))
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if err != nil {
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return nil, ctx, err
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}
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y1 = y1 + (doubleBorderAdjustment * border.borderWidthTop)
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y2 = y2 + (doubleBorderAdjustment * border.borderWidthTop)
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}
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// Line Top
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lineTop := draw.Line{
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LineWidth: border.borderWidthTop,
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Opacity: 1.0,
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LineColor: border.borderColorTop,
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LineEndingStyle1: draw.LineEndingStyleNone,
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LineEndingStyle2: draw.LineEndingStyleNone,
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X1: startX + 0.5,
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Y1: y1,
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X2: startX + border.width + autoTopAdjustmentOnRight + 0.5,
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Y2: y2,
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LineStyle: border.LineStyle,
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}
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contentsTop, _, err := lineTop.Draw("")
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if err != nil {
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return nil, ctx, err
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}
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err = block.addContentsByString(string(contentsTop))
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if err != nil {
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return nil, ctx, err
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}
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}
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if border.borderWidthLeft != 0 {
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x1 := startX + 1
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x2 := startX + 1
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if border.StyleLeft == CellBorderStyleDoubleLeft {
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// Line Left
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lineLeft := draw.Line{
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LineWidth: border.borderWidthLeft,
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Opacity: 1.0,
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LineColor: border.borderColorLeft,
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LineEndingStyle1: draw.LineEndingStyleNone,
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LineEndingStyle2: draw.LineEndingStyleNone,
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X1: x1 - (doubleBorderAdjustment * border.borderWidthLeft),
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Y1: startY + autoLeftAdjustmentOnTop,
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X2: x2 - (doubleBorderAdjustment * border.borderWidthLeft),
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Y2: (startY - border.height) - autoLeftAdjustmentOnBottom,
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LineStyle: border.LineStyle,
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}
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contentsLeft, _, err := lineLeft.Draw("")
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if err != nil {
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return nil, ctx, err
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}
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err = block.addContentsByString(string(contentsLeft))
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if err != nil {
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return nil, ctx, err
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}
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x1 = x1 + (doubleBorderAdjustment * border.borderWidthLeft)
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x2 = x2 + (doubleBorderAdjustment * border.borderWidthLeft)
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}
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// Line Left
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lineLeft := draw.Line{
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LineWidth: border.borderWidthLeft,
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Opacity: 1.0,
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LineColor: border.borderColorLeft,
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LineEndingStyle1: draw.LineEndingStyleNone,
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LineEndingStyle2: draw.LineEndingStyleNone,
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X1: x1,
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Y1: startY,
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X2: x2,
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Y2: (startY - border.height) + autoLeftAdjustmentOnBottom,
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LineStyle: border.LineStyle,
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}
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contentsLeft, _, err := lineLeft.Draw("")
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if err != nil {
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return nil, ctx, err
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}
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err = block.addContentsByString(string(contentsLeft))
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if err != nil {
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return nil, ctx, err
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}
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}
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if border.borderWidthRight != 0 {
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x1 := startX + border.width
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x2 := startX + border.width
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if border.StyleRight == CellBorderStyleDoubleRight {
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// Line Right
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lineRight := draw.Line{
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LineWidth: border.borderWidthRight,
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Opacity: 1.0,
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LineColor: border.borderColorRight,
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LineEndingStyle1: draw.LineEndingStyleNone,
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LineEndingStyle2: draw.LineEndingStyleNone,
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X1: x1 - (doubleBorderAdjustment * border.borderWidthRight),
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Y1: startY - autoRightAdjustmentOnTop,
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X2: x2 - (doubleBorderAdjustment * border.borderWidthRight),
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Y2: (startY - border.height) + autoRightAdjustmentOnBottom,
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LineStyle: border.LineStyle,
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}
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contentsRight, _, err := lineRight.Draw("")
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if err != nil {
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return nil, ctx, err
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}
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err = block.addContentsByString(string(contentsRight))
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if err != nil {
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return nil, ctx, err
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}
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x1 = x1 + (doubleBorderAdjustment * border.borderWidthRight)
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x2 = x2 + (doubleBorderAdjustment * border.borderWidthRight)
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}
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// Line Right
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lineRight := draw.Line{
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LineWidth: border.borderWidthRight,
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Opacity: 1.0,
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LineColor: border.borderColorRight,
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LineEndingStyle1: draw.LineEndingStyleNone,
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LineEndingStyle2: draw.LineEndingStyleNone,
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X1: x1,
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Y1: startY + autoRightAdjustmentOnTop,
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X2: x2,
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Y2: (startY - border.height) - autoRightAdjustmentOnBottom,
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LineStyle: border.LineStyle,
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}
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contentsRight, _, err := lineRight.Draw("")
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if err != nil {
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return nil, ctx, err
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}
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err = block.addContentsByString(string(contentsRight))
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if err != nil {
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return nil, ctx, err
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}
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}
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if border.borderWidthBottom != 0 {
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// Line Bottom
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y1 := startY - border.height
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y2 := startY - border.height
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if border.StyleBottom == CellBorderStyleDoubleBottom {
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lineBottom := draw.Line{
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LineWidth: border.borderWidthBottom,
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Opacity: 1.0,
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LineColor: border.borderColorBottom,
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LineEndingStyle1: draw.LineEndingStyleNone,
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LineEndingStyle2: draw.LineEndingStyleNone,
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X1: (startX + border.width) - autoBottomAdjustmentOnRight,
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Y1: y1 + (doubleBorderAdjustment * border.borderWidthBottom),
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X2: startX + autoBottomAdjustmentOnLeft + 1, // +1 for corner adjustment
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Y2: y2 + (doubleBorderAdjustment * border.borderWidthBottom),
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LineStyle: border.LineStyle,
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}
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contentsBottom, _, err := lineBottom.Draw("")
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if err != nil {
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return nil, ctx, err
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}
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err = block.addContentsByString(string(contentsBottom))
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if err != nil {
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return nil, ctx, err
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}
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y1 = y1 - (doubleBorderAdjustment * border.borderWidthBottom)
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y2 = y2 - (doubleBorderAdjustment * border.borderWidthBottom)
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}
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lineBottom := draw.Line{
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LineWidth: border.borderWidthBottom,
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Opacity: 1.0,
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LineColor: border.borderColorBottom,
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LineEndingStyle1: draw.LineEndingStyleNone,
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LineEndingStyle2: draw.LineEndingStyleNone,
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X1: startX + border.width + autoBottomAdjustmentOnRight,
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Y1: y1,
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X2: startX + autoBottomAdjustmentOnRight,
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Y2: y2,
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LineStyle: border.LineStyle,
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}
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contentsBottom, _, err := lineBottom.Draw("")
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if err != nil {
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return nil, ctx, err
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}
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err = block.addContentsByString(string(contentsBottom))
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if err != nil {
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return nil, ctx, err
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}
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}
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return []*Block{block}, ctx, nil
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}
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