1// Copyright 2017 The oksvg Authors. All rights reserved.
 2// created: 2/12/2017 by S.R.Wiley
 3//
 4// utils.go implements translation of an SVG2.0 path into a rasterx Path.
 5
 6package oksvg
 7
 8import (
 9	"github.com/srwiley/rasterx"
10)
11
12// SvgIcon holds data from parsed SVGs.
13type SvgIcon struct {
14	ViewBox      struct{ X, Y, W, H float64 }
15	Titles       []string // Title elements collect here
16	Descriptions []string // Description elements collect here
17	Grads        map[string]*rasterx.Gradient
18	Defs         map[string][]definition
19	SVGPaths     []SvgPath
20	Transform    rasterx.Matrix2D
21	classes      map[string]styleAttribute
22}
23
24// Draw the compiled SVG icon into the GraphicContext.
25// All elements should be contained by the Bounds rectangle of the SvgIcon.
26func (s *SvgIcon) Draw(r *rasterx.Dasher, opacity float64) {
27	for _, svgp := range s.SVGPaths {
28		svgp.DrawTransformed(r, opacity, s.Transform)
29	}
30}
31
32// SetTarget sets the Transform matrix to draw within the bounds of the rectangle arguments
33func (s *SvgIcon) SetTarget(x, y, w, h float64) {
34	scaleW := w / s.ViewBox.W
35	scaleH := h / s.ViewBox.H
36	s.Transform = rasterx.Identity.Translate(x-s.ViewBox.X, y-s.ViewBox.Y).Scale(scaleW, scaleH)
37}