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feat: add multi line text draw

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This commit is contained in:
vicanso 2022-05-11 20:29:39 +08:00
parent e64498a061
commit 7e2f112eea
3 changed files with 204 additions and 0 deletions
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30
draw_test.go
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@ -475,3 +475,33 @@ func TestDraw(t *testing.T) {
assert.Equal(tt.result, string(data))
}
}
func TestDrawTextFit(t *testing.T) {
assert := assert.New(t)
d, err := NewDraw(DrawOption{
Width: 400,
Height: 300,
})
assert.Nil(err)
f, _ := chart.GetDefaultFont()
style := chart.Style{
FontSize: 12,
FontColor: chart.ColorBlack,
Font: f,
}
box := d.textFit("Hello World!", 0, 20, 80, style)
assert.Equal(chart.Box{
Right: 45,
Bottom: 35,
}, box)
box = d.textFit("Hello World!", 0, 100, 200, style)
assert.Equal(chart.Box{
Right: 84,
Bottom: 15,
}, box)
buf, err := d.Bytes()
assert.Nil(err)
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))
}