From 3ce04a4d3dc8d174b520d85804e5c8dce8c5d08f Mon Sep 17 00:00:00 2001 From: Sam Anthony Date: Tue, 10 Feb 2026 09:30:42 -0500 Subject: add layout resize functions --- layout/draw.go | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 layout/draw.go (limited to 'layout/draw.go') diff --git a/layout/draw.go b/layout/draw.go new file mode 100644 index 0000000..760a149 --- /dev/null +++ b/layout/draw.go @@ -0,0 +1,27 @@ +package layout + +import ( + "image" + "image/color" + "image/draw" +) + +// subimager is implemented by most Image types. +type subimager interface { + SubImage(image.Rectangle) image.Image +} + +// Subimage returns an image representing the portion of the image m visible through r. +// The returned value shares pixels with the original. +// Panics if the concrete image type does not have a SubImage() method. +func subimage(m draw.Image, r image.Rectangle) draw.Image { + return m.(subimager).SubImage(r).(draw.Image) +} + +// drawBackground returns a draw call that fills the entire image with a color. +func drawBackground(c color.Color) func(draw.Image) image.Rectangle { + return func(img draw.Image) image.Rectangle { + draw.Draw(img, img.Bounds(), &image.Uniform{c}, image.ZP, draw.Src) + return img.Bounds() + } +} -- cgit v1.2.3