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/*
* Copyright (C) 2017 ~ 2018 Deepin Technology Co., Ltd.
*
* Author: jouyouyun <jouyouwen717@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package notify
import (
"image"
"image/draw"
)
// This is a raw data image format which describes the width, height, rowstride,
// has alpha, bits per sample, channels and image data respectively.
type Image struct {
Width int32
Height int32
RowStride int32
HasAlpha bool
BitsPerSample int32
Channels int32
Pix []byte
}
func (n *Notification) SetImage(img image.Image) {
n.SetHint(HintImageData, NewImage(img))
}
func toRGBA(src image.Image) *image.RGBA {
b := src.Bounds()
m := image.NewRGBA(image.Rect(0, 0, b.Dx(), b.Dy()))
draw.Draw(m, m.Bounds(), src, b.Min, draw.Src)
return m
}
func NewImage(src image.Image) *Image {
return newImageFromRGBA(toRGBA(src))
}
func newImageFromRGBA(img *image.RGBA) *Image {
opaque := img.Opaque()
b := img.Bounds()
w := b.Dx()
h := b.Dy()
nchan := 4
if opaque {
nchan = 3
}
stride := w * nchan
pix := make([]byte, stride*h)
// fill data to pix
// img.Pix idx
i := 0
// pix idx
p := 0
if opaque {
for y := 0; y < h; y++ {
// copy one row
for x := 0; x < w; x++ {
pix[p] = img.Pix[i] // R
pix[p+1] = img.Pix[i+1] // G
pix[p+2] = img.Pix[i+2] // B
// skip A
p += nchan
i += (nchan + 1)
}
}
} else {
for y := 0; y < h; y++ {
// copy one row
copy(pix[p:], img.Pix[i:i+stride])
p += stride
i += img.Stride
}
}
return &Image{
Width: int32(w),
Height: int32(h),
RowStride: int32(stride),
HasAlpha: !opaque,
BitsPerSample: 8,
Channels: int32(nchan),
Pix: pix,
}
}
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