mirror of
https://github.com/imgproxy/imgproxy.git
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52 lines
1.4 KiB
Go
52 lines
1.4 KiB
Go
package processing
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import (
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"github.com/imgproxy/imgproxy/v3/imath"
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"github.com/imgproxy/imgproxy/v3/options"
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"github.com/imgproxy/imgproxy/v3/vips"
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)
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func cropImage(img *vips.Image, cropWidth, cropHeight int, gravity *options.GravityOptions, offsetScale float64) error {
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if cropWidth == 0 && cropHeight == 0 {
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return nil
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}
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imgWidth, imgHeight := img.Width(), img.Height()
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cropWidth = imath.MinNonZero(cropWidth, imgWidth)
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cropHeight = imath.MinNonZero(cropHeight, imgHeight)
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if cropWidth >= imgWidth && cropHeight >= imgHeight {
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return nil
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}
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if gravity.Type == options.GravitySmart {
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if err := img.CopyMemory(); err != nil {
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return err
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}
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return img.SmartCrop(cropWidth, cropHeight)
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}
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left, top := calcPosition(imgWidth, imgHeight, cropWidth, cropHeight, gravity, offsetScale, false)
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return img.Crop(left, top, cropWidth, cropHeight)
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}
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func (p *Processor) crop(c *Context) error {
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width, height := c.CropWidth, c.CropHeight
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opts := c.CropGravity
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opts.RotateAndFlip(c.Angle, c.Flip)
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opts.RotateAndFlip(c.PO.Rotate, false)
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if (c.Angle+c.PO.Rotate)%180 == 90 {
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width, height = height, width
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}
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// Since we crop before scaling, we shouldn't consider DPR
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return cropImage(c.Img, width, height, &opts, 1.0)
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}
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func (p *Processor) cropToResult(c *Context) error {
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return cropImage(c.Img, c.ResultCropWidth, c.ResultCropHeight, &c.PO.Gravity, c.DprScale)
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}
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