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Add support for image watermarks

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This commit is contained in:
Jaume Pinyol 2017-01-24 19:14:34 +01:00
parent 2ccb6aa8a7
commit 1a661e4e52
9 changed files with 325 additions and 26 deletions
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35
image_test.go
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@ -239,7 +239,34 @@ func TestImageWatermark(t *testing.T) {
t.Fatal("Image is not jpeg")
}
Write("fixtures/test_watermark_out.jpg", buf)
Write("fixtures/test_watermark_text_out.jpg", buf)
}
func TestImageWatermarkWithImage(t *testing.T) {
image := initImage("test.jpg")
watermark, _ := imageBuf("transparent.png")
_, err := image.Crop(800, 600, GravityNorth)
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
buf, err := image.WatermarkImage(WatermarkImage{Left: 100, Top: 100, Buf: watermark})
if err != nil {
t.Error(err)
}
err = assertSize(buf, 800, 600)
if err != nil {
t.Error(err)
}
if DetermineImageType(buf) != JPEG {
t.Fatal("Image is not jpeg")
}
Write("fixtures/test_watermark_image_out.jpg", buf)
}
func TestImageWatermarkNoReplicate(t *testing.T) {
@ -429,10 +456,14 @@ func TestFluentInterface(t *testing.T) {
}
func initImage(file string) *Image {
buf, _ := Read(path.Join("fixtures", file))
buf, _ := imageBuf(file)
return NewImage(buf)
}
func imageBuf(file string) ([]byte, error) {
return Read(path.Join("fixtures", file))
}
func assertSize(buf []byte, width, height int) error {
size, err := NewImage(buf).Size()
if err != nil {