371 lines
11 KiB
Go
371 lines
11 KiB
Go
// MIT License
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// Copyright (c) 2022 Tree Xie
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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package charts
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import (
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"math"
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"testing"
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"github.com/golang/freetype/truetype"
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"github.com/stretchr/testify/assert"
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"github.com/wcharczuk/go-chart/v2"
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"github.com/wcharczuk/go-chart/v2/drawing"
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)
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func TestPainterOption(t *testing.T) {
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assert := assert.New(t)
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font := &truetype.Font{}
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d, err := NewPainter(PainterOptions{
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Width: 800,
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Height: 600,
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},
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PainterBoxOption(Box{
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Right: 400,
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Bottom: 300,
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}),
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PainterPaddingOption(Box{
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Left: 1,
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Top: 2,
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Right: 3,
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Bottom: 4,
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}),
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PainterFontOption(font),
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PainterStyleOption(Style{
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ClassName: "test",
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}),
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)
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assert.Nil(err)
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assert.Equal(Box{
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Left: 1,
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Top: 2,
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Right: 397,
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Bottom: 296,
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}, d.box)
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assert.Equal(font, d.font)
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assert.Equal("test", d.style.ClassName)
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}
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func TestPainter(t *testing.T) {
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assert := assert.New(t)
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tests := []struct {
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fn func(*Painter)
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result string
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}{
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// moveTo, lineTo
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{
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fn: func(p *Painter) {
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p.MoveTo(1, 1)
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p.LineTo(2, 2)
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p.Stroke()
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},
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result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"400\" height=\"300\">\\n<path d=\"M 6 11\nL 7 12\" style=\"stroke-width:0;stroke:none;fill:none\"/></svg>",
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},
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// circle
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{
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fn: func(p *Painter) {
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p.Circle(5, 2, 3)
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},
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result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"400\" height=\"300\">\\n<circle cx=\"7\" cy=\"13\" r=\"5\" style=\"stroke-width:0;stroke:none;fill:none\"/></svg>",
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},
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// text
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{
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fn: func(p *Painter) {
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p.Text("hello world!", 3, 6)
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},
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result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"400\" height=\"300\">\\n<text x=\"8\" y=\"16\" style=\"stroke-width:0;stroke:none;fill:none;font-family:'Roboto Medium',sans-serif\">hello world!</text></svg>",
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},
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// line stroke
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{
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fn: func(p *Painter) {
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p.LineStroke([]Point{
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{
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X: 1,
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Y: 2,
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},
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{
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X: 3,
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Y: 4,
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},
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}, LineStyle{
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StrokeColor: drawing.ColorBlack,
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StrokeWidth: 1,
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})
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},
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result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"400\" height=\"300\">\\n<path d=\"M 6 12\nL 8 14\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:none\"/></svg>",
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},
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// set background
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{
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fn: func(p *Painter) {
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p.SetBackground(400, 300, chart.ColorWhite)
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},
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result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"400\" height=\"300\">\\n<path d=\"M 0 0\nL 400 0\nL 400 300\nL 0 300\nL 0 0\" style=\"stroke-width:0;stroke:none;fill:rgba(255,255,255,1.0)\"/></svg>",
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},
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// arcTo
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{
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fn: func(p *Painter) {
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p.SetStyle(Style{
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StrokeWidth: 1,
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StrokeColor: drawing.ColorBlack,
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FillColor: drawing.ColorBlue,
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})
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p.ArcTo(100, 100, 100, 100, 0, math.Pi/2)
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p.Close()
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p.FillStroke()
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},
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result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"400\" height=\"300\">\\n<path d=\"M 205 110\nA 100 100 90.00 0 1 105 210\nZ\" style=\"stroke-width:1;stroke:rgba(0,0,0,1.0);fill:rgba(0,0,255,1.0)\"/></svg>",
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},
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// pin
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{
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fn: func(p *Painter) {
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p.SetStyle(Style{
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StrokeWidth: 1,
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StrokeColor: drawing.Color{
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R: 84,
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G: 112,
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B: 198,
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A: 255,
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},
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FillColor: drawing.Color{
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R: 84,
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G: 112,
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B: 198,
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A: 255,
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},
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})
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p.Pin(30, 30, 30)
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},
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result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"400\" height=\"300\">\\n<path d=\"M 32 47\nA 15 15 330.00 1 1 38 47\nL 35 33\nZ\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/><path d=\"M 20 33\nQ35,70 50,33\nZ\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/></svg>",
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},
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// arrow left
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{
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fn: func(p *Painter) {
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p.SetStyle(Style{
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StrokeWidth: 1,
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StrokeColor: drawing.Color{
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R: 84,
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G: 112,
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B: 198,
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A: 255,
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},
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FillColor: drawing.Color{
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R: 84,
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G: 112,
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B: 198,
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A: 255,
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},
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})
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p.ArrowLeft(30, 30, 16, 10)
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},
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result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"400\" height=\"300\">\\n<path d=\"M 51 35\nL 35 40\nL 51 45\nL 46 40\nL 51 35\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/></svg>",
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},
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// arrow right
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{
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fn: func(p *Painter) {
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p.SetStyle(Style{
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StrokeWidth: 1,
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StrokeColor: drawing.Color{
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R: 84,
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G: 112,
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B: 198,
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A: 255,
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},
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FillColor: drawing.Color{
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R: 84,
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G: 112,
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B: 198,
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A: 255,
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},
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})
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p.ArrowRight(30, 30, 16, 10)
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},
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result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"400\" height=\"300\">\\n<path d=\"M 19 35\nL 35 40\nL 19 45\nL 24 40\nL 19 35\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/></svg>",
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},
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// arrow top
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{
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fn: func(p *Painter) {
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p.SetStyle(Style{
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StrokeWidth: 1,
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StrokeColor: drawing.Color{
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R: 84,
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G: 112,
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B: 198,
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A: 255,
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},
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FillColor: drawing.Color{
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R: 84,
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G: 112,
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B: 198,
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A: 255,
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},
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})
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p.ArrowTop(30, 30, 10, 16)
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},
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result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"400\" height=\"300\">\\n<path d=\"M 30 40\nL 35 24\nL 40 40\nL 35 35\nL 30 40\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/></svg>",
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},
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// arrow bottom
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{
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fn: func(p *Painter) {
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p.SetStyle(Style{
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StrokeWidth: 1,
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StrokeColor: drawing.Color{
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R: 84,
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G: 112,
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B: 198,
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A: 255,
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},
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FillColor: drawing.Color{
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R: 84,
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G: 112,
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B: 198,
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A: 255,
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},
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})
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p.ArrowBottom(30, 30, 10, 16)
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},
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result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"400\" height=\"300\">\\n<path d=\"M 30 24\nL 35 40\nL 40 24\nL 35 30\nL 30 24\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/></svg>",
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},
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// mark line
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{
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fn: func(p *Painter) {
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p.SetStyle(Style{
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StrokeWidth: 1,
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StrokeColor: drawing.Color{
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R: 84,
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G: 112,
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B: 198,
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A: 255,
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},
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FillColor: drawing.Color{
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R: 84,
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G: 112,
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B: 198,
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A: 255,
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},
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StrokeDashArray: []float64{
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4,
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2,
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},
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})
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p.MarkLine(0, 20, 300)
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},
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result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"400\" height=\"300\">\\n<circle cx=\"5\" cy=\"30\" r=\"3\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/><path stroke-dasharray=\"4.0, 2.0\" d=\"\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/><path stroke-dasharray=\"4.0, 2.0\" d=\"M 10 30\nL 289 30\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/><path d=\"M 289 25\nL 305 30\nL 289 35\nL 294 30\nL 289 25\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/></svg>",
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},
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// polygon
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{
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fn: func(p *Painter) {
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p.SetStyle(Style{
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StrokeWidth: 1,
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StrokeColor: drawing.Color{
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R: 84,
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G: 112,
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B: 198,
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A: 255,
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},
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})
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p.Polygon(Point{
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X: 100,
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Y: 100,
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}, 50, 6)
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},
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result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"400\" height=\"300\">\\n<path d=\"M 105 60\nL 148 85\nL 148 134\nL 105 160\nL 62 135\nL 62 86\nL 105 60\" style=\"stroke-width:1;stroke:rgba(84,112,198,1.0);fill:none\"/></svg>",
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},
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// FillArea
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{
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fn: func(p *Painter) {
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p.FillArea([]Point{
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{
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X: 0,
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Y: 0,
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},
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{
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X: 0,
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Y: 100,
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},
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{
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X: 100,
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Y: 100,
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},
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{
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X: 0,
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Y: 0,
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},
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}, Style{
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FillColor: drawing.Color{
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R: 84,
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G: 112,
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B: 198,
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A: 255,
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},
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})
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},
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result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"400\" height=\"300\">\\n<path d=\"M 5 10\nL 5 110\nL 105 110\nL 5 10\" style=\"stroke-width:0;stroke:none;fill:rgba(84,112,198,1.0)\"/></svg>",
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},
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}
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for _, tt := range tests {
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d, err := NewPainter(PainterOptions{
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Width: 400,
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Height: 300,
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}, PainterPaddingOption(chart.Box{
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Left: 5,
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Top: 10,
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}))
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assert.Nil(err)
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tt.fn(d)
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data, err := d.Bytes()
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assert.Nil(err)
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assert.Equal(tt.result, string(data))
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}
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}
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func TestPainterTextFit(t *testing.T) {
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assert := assert.New(t)
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p, err := NewPainter(PainterOptions{
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Width: 400,
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Height: 300,
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})
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assert.Nil(err)
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f, _ := chart.GetDefaultFont()
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style := Style{
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FontSize: 12,
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FontColor: chart.ColorBlack,
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Font: f,
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}
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p.SetStyle(style)
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box := p.TextFit("Hello World!", 0, 20, 80)
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assert.Equal(chart.Box{
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Right: 45,
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Bottom: 35,
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}, box)
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box = p.TextFit("Hello World!", 0, 100, 200)
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assert.Equal(chart.Box{
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Right: 84,
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Bottom: 15,
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}, box)
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buf, err := p.Bytes()
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assert.Nil(err)
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assert.Equal(`<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="400" height="300">\n<text x="0" y="20" style="stroke-width:0;stroke:none;fill:rgba(51,51,51,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif">Hello</text><text x="0" y="40" style="stroke-width:0;stroke:none;fill:rgba(51,51,51,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif">World!</text><text x="0" y="100" style="stroke-width:0;stroke:none;fill:rgba(51,51,51,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif">Hello World!</text></svg>`, string(buf))
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}
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