89 lines
1.7 KiB
Markdown
89 lines
1.7 KiB
Markdown
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draw2d samples
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==============
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Various Samples to using draw2d
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Using the image backend
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-----------------------
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The following Go code draws the android sample on a png image:
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```
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import (
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"image"
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"github.com/llgcode/draw2d"
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"github.com/llgcode/draw2d/samples/android"
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)
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function main(){}
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// Initialize the graphic context on an RGBA image
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dest := image.NewRGBA(image.Rect(0, 0, 297, 210.0))
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gc := draw2d.NewGraphicContext(dest)
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// Draw Android logo
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fn, err := android.Main(gc, "png")
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if err != nil {
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t.Errorf("Drawing %q failed: %v", fn, err)
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return
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}
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// Save to png
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err = draw2d.SaveToPngFile(fn, dest)
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if err != nil {
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t.Errorf("Saving %q failed: %v", fn, err)
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}
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}
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```
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Using the pdf backend
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---------------------
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The following Go code draws the android sample on a pdf document:
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```
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import (
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"image"
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"github.com/llgcode/draw2d/draw2dpdf"
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"github.com/llgcode/draw2d/samples/android"
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)
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function main(){}
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// Initialize the graphic context on a pdf document
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dest := draw2dpdf.NewPdf("L", "mm", "A4")
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gc := draw2dpdf.NewGraphicContext(dest)
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// Draw Android logo
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fn, err := android.Main(gc, "png")
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if err != nil {
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t.Errorf("Drawing %q failed: %v", fn, err)
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return
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}
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// Save to pdf
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err = draw2dpdf.SaveToPdfFile(fn, dest)
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if err != nil {
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t.Errorf("Saving %q failed: %v", fn, err)
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}
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}
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```
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Testing
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-------
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These samples are run as tests from the root package folder `draw2d` by:
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```
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go test ./...
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```
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Or if you want to run with test coverage:
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```
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go test -cover ./... | grep -v "no test"
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```
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The following files are responsible to run the image tests:
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```
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draw2d/test_test.go
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draw2d/samples_test.go
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```
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The following files are responsible to run the pdf tests:
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```
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draw2d/pdf/test_test.go
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draw2dpdf/samples_test.go
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```
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