Adding upstream version 9.0.3.

Signed-off-by: Daniel Baumann <daniel@debian.org>

1 files changed, 717 insertions, 0 deletions

diff --git a/modules/avatar/identicon/block.go b/modules/avatar/identicon/block.go
new file mode 100644
index 0000000..cb1803a
--- /dev/null
+++ b/modules/avatar/identicon/block.go
@@ -0,0 +1,717 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+// Copied and modified from https://github.com/issue9/identicon/ (MIT License)
+
+package identicon
+
+import "image"
+
+var (
+	// the blocks can appear in center, these blocks can be more beautiful
+	centerBlocks = []blockFunc{b0, b1, b2, b3, b19, b26, b27}
+
+	// all blocks
+	blocks = []blockFunc{b0, b1, b2, b3, b4, b5, b6, b7, b8, b9, b10, b11, b12, b13, b14, b15, b16, b17, b18, b19, b20, b21, b22, b23, b24, b25, b26, b27}
+)
+
+type blockFunc func(img *image.Paletted, x, y, size, angle int)
+
+// draw a polygon by points, and the polygon is rotated by angle.
+func drawBlock(img *image.Paletted, x, y, size, angle int, points []int) {
+	if angle != 0 {
+		m := size / 2
+		rotate(points, m, m, angle)
+	}
+
+	for i := 0; i < size; i++ {
+		for j := 0; j < size; j++ {
+			if pointInPolygon(i, j, points) {
+				img.SetColorIndex(x+i, y+j, 1)
+			}
+		}
+	}
+}
+
+// blank
+//
+//	--------
+//	|      |
+//	|      |
+//	|      |
+//	--------
+func b0(img *image.Paletted, x, y, size, angle int) {}
+
+// full-filled
+//
+//	--------
+//	|######|
+//	|######|
+//	|######|
+//	--------
+func b1(img *image.Paletted, x, y, size, angle int) {
+	for i := x; i < x+size; i++ {
+		for j := y; j < y+size; j++ {
+			img.SetColorIndex(i, j, 1)
+		}
+	}
+}
+
+// a small block
+//
+//	----------
+//	|        |
+//	|  ####  |
+//	|  ####  |
+//	|        |
+//	----------
+func b2(img *image.Paletted, x, y, size, angle int) {
+	l := size / 4
+	x += l
+	y += l
+
+	for i := x; i < x+2*l; i++ {
+		for j := y; j < y+2*l; j++ {
+			img.SetColorIndex(i, j, 1)
+		}
+	}
+}
+
+// diamond
+//
+//	---------
+//	|   #   |
+//	|  ###  |
+//	| ##### |
+//	|#######|
+//	| ##### |
+//	|  ###  |
+//	|   #   |
+//	---------
+func b3(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	drawBlock(img, x, y, size, 0, []int{
+		m, 0,
+		size, m,
+		m, size,
+		0, m,
+		m, 0,
+	})
+}
+
+// b4
+//
+//	-------
+//	|#####|
+//	|#### |
+//	|###  |
+//	|##   |
+//	|#    |
+//	|------
+func b4(img *image.Paletted, x, y, size, angle int) {
+	drawBlock(img, x, y, size, angle, []int{
+		0, 0,
+		size, 0,
+		0, size,
+		0, 0,
+	})
+}
+
+// b5
+//
+//	---------
+//	|   #   |
+//	|  ###  |
+//	| ##### |
+//	|#######|
+func b5(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	drawBlock(img, x, y, size, angle, []int{
+		m, 0,
+		size, size,
+		0, size,
+		m, 0,
+	})
+}
+
+// b6
+//
+//	--------
+//	|###   |
+//	|###   |
+//	|###   |
+//	--------
+func b6(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	drawBlock(img, x, y, size, angle, []int{
+		0, 0,
+		m, 0,
+		m, size,
+		0, size,
+		0, 0,
+	})
+}
+
+// b7 italic cone
+//
+//	---------
+//	| #     |
+//	|  ##   |
+//	|  #####|
+//	|   ####|
+//	|--------
+func b7(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	drawBlock(img, x, y, size, angle, []int{
+		0, 0,
+		size, m,
+		size, size,
+		m, size,
+		0, 0,
+	})
+}
+
+// b8 three small triangles
+//
+//	-----------
+//	|    #    |
+//	|   ###   |
+//	|  #####  |
+//	|  #   #  |
+//	| ### ### |
+//	|#########|
+//	-----------
+func b8(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	mm := m / 2
+
+	// top
+	drawBlock(img, x, y, size, angle, []int{
+		m, 0,
+		3 * mm, m,
+		mm, m,
+		m, 0,
+	})
+
+	// bottom left
+	drawBlock(img, x, y, size, angle, []int{
+		mm, m,
+		m, size,
+		0, size,
+		mm, m,
+	})
+
+	// bottom right
+	drawBlock(img, x, y, size, angle, []int{
+		3 * mm, m,
+		size, size,
+		m, size,
+		3 * mm, m,
+	})
+}
+
+// b9 italic triangle
+//
+//	---------
+//	|#      |
+//	| ####  |
+//	|  #####|
+//	|  #### |
+//	|   #   |
+//	---------
+func b9(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	drawBlock(img, x, y, size, angle, []int{
+		0, 0,
+		size, m,
+		m, size,
+		0, 0,
+	})
+}
+
+// b10
+//
+//	----------
+//	|    ####|
+//	|    ### |
+//	|    ##  |
+//	|    #   |
+//	|####    |
+//	|###     |
+//	|##      |
+//	|#       |
+//	----------
+func b10(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	drawBlock(img, x, y, size, angle, []int{
+		m, 0,
+		size, 0,
+		m, m,
+		m, 0,
+	})
+
+	drawBlock(img, x, y, size, angle, []int{
+		0, m,
+		m, m,
+		0, size,
+		0, m,
+	})
+}
+
+// b11
+//
+//	----------
+//	|####    |
+//	|####    |
+//	|####    |
+//	|        |
+//	|        |
+//	----------
+func b11(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	drawBlock(img, x, y, size, angle, []int{
+		0, 0,
+		m, 0,
+		m, m,
+		0, m,
+		0, 0,
+	})
+}
+
+// b12
+//
+//	-----------
+//	|         |
+//	|         |
+//	|#########|
+//	|  #####  |
+//	|    #    |
+//	-----------
+func b12(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	drawBlock(img, x, y, size, angle, []int{
+		0, m,
+		size, m,
+		m, size,
+		0, m,
+	})
+}
+
+// b13
+//
+//	-----------
+//	|         |
+//	|         |
+//	|    #    |
+//	|  #####  |
+//	|#########|
+//	-----------
+func b13(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	drawBlock(img, x, y, size, angle, []int{
+		m, m,
+		size, size,
+		0, size,
+		m, m,
+	})
+}
+
+// b14
+//
+//	---------
+//	|   #   |
+//	| ###   |
+//	|####   |
+//	|       |
+//	|       |
+//	---------
+func b14(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	drawBlock(img, x, y, size, angle, []int{
+		m, 0,
+		m, m,
+		0, m,
+		m, 0,
+	})
+}
+
+// b15
+//
+//	----------
+//	|#####   |
+//	|###     |
+//	|#       |
+//	|        |
+//	|        |
+//	----------
+func b15(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	drawBlock(img, x, y, size, angle, []int{
+		0, 0,
+		m, 0,
+		0, m,
+		0, 0,
+	})
+}
+
+// b16
+//
+//	---------
+//	|   #   |
+//	| ##### |
+//	|#######|
+//	|   #   |
+//	| ##### |
+//	|#######|
+//	---------
+func b16(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	drawBlock(img, x, y, size, angle, []int{
+		m, 0,
+		size, m,
+		0, m,
+		m, 0,
+	})
+
+	drawBlock(img, x, y, size, angle, []int{
+		m, m,
+		size, size,
+		0, size,
+		m, m,
+	})
+}
+
+// b17
+//
+//	----------
+//	|#####   |
+//	|###     |
+//	|#       |
+//	|      ##|
+//	|      ##|
+//	----------
+func b17(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+
+	drawBlock(img, x, y, size, angle, []int{
+		0, 0,
+		m, 0,
+		0, m,
+		0, 0,
+	})
+
+	quarter := size / 4
+	drawBlock(img, x, y, size, angle, []int{
+		size - quarter, size - quarter,
+		size, size - quarter,
+		size, size,
+		size - quarter, size,
+		size - quarter, size - quarter,
+	})
+}
+
+// b18
+//
+//	----------
+//	|#####   |
+//	|####    |
+//	|###     |
+//	|##      |
+//	|#       |
+//	----------
+func b18(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+
+	drawBlock(img, x, y, size, angle, []int{
+		0, 0,
+		m, 0,
+		0, size,
+		0, 0,
+	})
+}
+
+// b19
+//
+//	----------
+//	|########|
+//	|###  ###|
+//	|#      #|
+//	|###  ###|
+//	|########|
+//	----------
+func b19(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+
+	drawBlock(img, x, y, size, angle, []int{
+		0, 0,
+		m, 0,
+		0, m,
+		0, 0,
+	})
+
+	drawBlock(img, x, y, size, angle, []int{
+		m, 0,
+		size, 0,
+		size, m,
+		m, 0,
+	})
+
+	drawBlock(img, x, y, size, angle, []int{
+		size, m,
+		size, size,
+		m, size,
+		size, m,
+	})
+
+	drawBlock(img, x, y, size, angle, []int{
+		0, m,
+		m, size,
+		0, size,
+		0, m,
+	})
+}
+
+// b20
+//
+//	----------
+//	|  ##     |
+//	|###      |
+//	|##       |
+//	|##       |
+//	|#        |
+//	----------
+func b20(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	q := size / 4
+
+	drawBlock(img, x, y, size, angle, []int{
+		q, 0,
+		0, size,
+		0, m,
+		q, 0,
+	})
+}
+
+// b21
+//
+//	----------
+//	| ####   |
+//	|## #####|
+//	|##    ##|
+//	|##      |
+//	|#       |
+//	----------
+func b21(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	q := size / 4
+
+	drawBlock(img, x, y, size, angle, []int{
+		q, 0,
+		0, size,
+		0, m,
+		q, 0,
+	})
+
+	drawBlock(img, x, y, size, angle, []int{
+		q, 0,
+		size, q,
+		size, m,
+		q, 0,
+	})
+}
+
+// b22
+//
+//	----------
+//	| ####   |
+//	|##  ### |
+//	|##    ##|
+//	|##    ##|
+//	|#      #|
+//	----------
+func b22(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	q := size / 4
+
+	drawBlock(img, x, y, size, angle, []int{
+		q, 0,
+		0, size,
+		0, m,
+		q, 0,
+	})
+
+	drawBlock(img, x, y, size, angle, []int{
+		q, 0,
+		size, q,
+		size, size,
+		q, 0,
+	})
+}
+
+// b23
+//
+//	----------
+//	| #######|
+//	|###    #|
+//	|##      |
+//	|##      |
+//	|#       |
+//	----------
+func b23(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	q := size / 4
+
+	drawBlock(img, x, y, size, angle, []int{
+		q, 0,
+		0, size,
+		0, m,
+		q, 0,
+	})
+
+	drawBlock(img, x, y, size, angle, []int{
+		q, 0,
+		size, 0,
+		size, q,
+		q, 0,
+	})
+}
+
+// b24
+//
+//	----------
+//	| ##  ###|
+//	|###  ###|
+//	|##  ##  |
+//	|##  ##  |
+//	|#   #   |
+//	----------
+func b24(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	q := size / 4
+
+	drawBlock(img, x, y, size, angle, []int{
+		q, 0,
+		0, size,
+		0, m,
+		q, 0,
+	})
+
+	drawBlock(img, x, y, size, angle, []int{
+		m, 0,
+		size, 0,
+		m, size,
+		m, 0,
+	})
+}
+
+// b25
+//
+//	----------
+//	|#      #|
+//	|##   ###|
+//	|##  ##  |
+//	|######  |
+//	|####    |
+//	----------
+func b25(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	q := size / 4
+
+	drawBlock(img, x, y, size, angle, []int{
+		0, 0,
+		0, size,
+		q, size,
+		0, 0,
+	})
+
+	drawBlock(img, x, y, size, angle, []int{
+		0, m,
+		size, 0,
+		q, size,
+		0, m,
+	})
+}
+
+// b26
+//
+//	----------
+//	|#      #|
+//	|###  ###|
+//	|  ####  |
+//	|###  ###|
+//	|#      #|
+//	----------
+func b26(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	q := size / 4
+
+	drawBlock(img, x, y, size, angle, []int{
+		0, 0,
+		m, q,
+		q, m,
+		0, 0,
+	})
+
+	drawBlock(img, x, y, size, angle, []int{
+		size, 0,
+		m + q, m,
+		m, q,
+		size, 0,
+	})
+
+	drawBlock(img, x, y, size, angle, []int{
+		size, size,
+		m, m + q,
+		q + m, m,
+		size, size,
+	})
+
+	drawBlock(img, x, y, size, angle, []int{
+		0, size,
+		q, m,
+		m, q + m,
+		0, size,
+	})
+}
+
+// b27
+//
+//	----------
+//	|########|
+//	|##   ###|
+//	|#      #|
+//	|###   ##|
+//	|########|
+//	----------
+func b27(img *image.Paletted, x, y, size, angle int) {
+	m := size / 2
+	q := size / 4
+
+	drawBlock(img, x, y, size, angle, []int{
+		0, 0,
+		size, 0,
+		0, q,
+		0, 0,
+	})
+
+	drawBlock(img, x, y, size, angle, []int{
+		q + m, 0,
+		size, 0,
+		size, size,
+		q + m, 0,
+	})
+
+	drawBlock(img, x, y, size, angle, []int{
+		size, q + m,
+		size, size,
+		0, size,
+		size, q + m,
+	})
+
+	drawBlock(img, x, y, size, angle, []int{
+		0, size,
+		0, 0,
+		q, size,
+		0, size,
+	})
+}