mirror of
https://github.com/unidoc/unipdf.git
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94 lines
2.5 KiB
Go
94 lines
2.5 KiB
Go
/*
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* This file is subject to the terms and conditions defined in
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* file 'LICENSE.md', which is part of this source code package.
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*/
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package creator
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import (
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"github.com/unidoc/unipdf/v3/contentstream/draw"
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"github.com/unidoc/unipdf/v3/model"
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)
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// Rectangle defines a rectangle with upper left corner at (x,y) and a specified width and height. The rectangle
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// can have a colored fill and/or border with a specified width.
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// Implements the Drawable interface and can be drawn on PDF using the Creator.
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type Rectangle 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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borderColor *model.PdfColorDeviceRGB
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borderWidth float64
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}
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// newRectangle creates a new Rectangle with default parameters with left corner at (x,y) and width, height as specified.
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func newRectangle(x, y, width, height float64) *Rectangle {
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rect := &Rectangle{}
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rect.x = x
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rect.y = y
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rect.width = width
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rect.height = height
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rect.borderColor = model.NewPdfColorDeviceRGB(0, 0, 0)
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rect.borderWidth = 1.0
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return rect
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}
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// GetCoords returns coordinates of the Rectangle's upper left corner (x,y).
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func (rect *Rectangle) GetCoords() (float64, float64) {
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return rect.x, rect.y
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}
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// SetBorderWidth sets the border width.
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func (rect *Rectangle) SetBorderWidth(bw float64) {
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rect.borderWidth = bw
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}
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// SetBorderColor sets border color.
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func (rect *Rectangle) SetBorderColor(col Color) {
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rect.borderColor = model.NewPdfColorDeviceRGB(col.ToRGB())
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}
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// SetFillColor sets the fill color.
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func (rect *Rectangle) SetFillColor(col Color) {
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rect.fillColor = model.NewPdfColorDeviceRGB(col.ToRGB())
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}
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// GeneratePageBlocks draws the rectangle on a new block representing the page. Implements the Drawable interface.
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func (rect *Rectangle) GeneratePageBlocks(ctx DrawContext) ([]*Block, DrawContext, error) {
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block := NewBlock(ctx.PageWidth, ctx.PageHeight)
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drawrect := draw.Rectangle{
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Opacity: 1.0,
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X: rect.x,
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Y: ctx.PageHeight - rect.y - rect.height,
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Height: rect.height,
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Width: rect.width,
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}
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if rect.fillColor != nil {
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drawrect.FillEnabled = true
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drawrect.FillColor = rect.fillColor
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}
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if rect.borderColor != nil && rect.borderWidth > 0 {
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drawrect.BorderEnabled = true
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drawrect.BorderColor = rect.borderColor
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drawrect.BorderWidth = rect.borderWidth
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}
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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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return []*Block{block}, ctx, nil
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}
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