mirror of
https://git.sr.ht/~eliasnaur/gio
synced 2026-07-01 15:45:38 +00:00
Chris Waldon
1d0d5f0383
The typesetting package has smarter line wrapping now, which is making our test text require fewer lines to display. We needed to update the expected data accordingly. I've also added a feature that takes a screenshot of the rendered output of one of our most complex cursoring tests. This will make it much easier to verify its behavior in the future. This feature currently only triggers if the test case fails. Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>
891 lines
29 KiB
Go
891 lines
29 KiB
Go
package widget
|
|
|
|
import (
|
|
"bytes"
|
|
"image"
|
|
"image/png"
|
|
"io"
|
|
"os"
|
|
"testing"
|
|
|
|
nsareg "eliasnaur.com/font/noto/sans/arabic/regular"
|
|
"gioui.org/font"
|
|
"gioui.org/font/opentype"
|
|
"gioui.org/gpu/headless"
|
|
"gioui.org/layout"
|
|
"gioui.org/op"
|
|
"gioui.org/text"
|
|
"golang.org/x/image/font/gofont/goregular"
|
|
"golang.org/x/image/math/fixed"
|
|
)
|
|
|
|
// makePosTestText returns two bidi samples of shaped text at the given
|
|
// font size and wrapped to the given line width. The runeLimit, if nonzero,
|
|
// truncates the sample text to ensure shorter output for expensive tests.
|
|
func makePosTestText(fontSize, lineWidth int, alignOpposite bool) (shaper *text.Shaper, source string, bidiLTR, bidiRTL []text.Glyph) {
|
|
ltrFace, _ := opentype.Parse(goregular.TTF)
|
|
rtlFace, _ := opentype.Parse(nsareg.TTF)
|
|
|
|
shaper = text.NewShaper(text.NoSystemFonts(), text.WithCollection([]font.FontFace{
|
|
{
|
|
Font: font.Font{Typeface: "LTR"},
|
|
Face: ltrFace,
|
|
},
|
|
{
|
|
Font: font.Font{Typeface: "RTL"},
|
|
Face: rtlFace,
|
|
},
|
|
}))
|
|
// bidiSource is crafted to contain multiple consecutive RTL runs (by
|
|
// changing scripts within the RTL).
|
|
bidiSource := "The quick سماء שלום لا fox تمط שלום غير the lazy dog."
|
|
ltrParams := text.Parameters{
|
|
PxPerEm: fixed.I(fontSize),
|
|
MaxWidth: lineWidth,
|
|
MinWidth: lineWidth,
|
|
Locale: english,
|
|
}
|
|
rtlParams := text.Parameters{
|
|
Alignment: text.End,
|
|
PxPerEm: fixed.I(fontSize),
|
|
MaxWidth: lineWidth,
|
|
MinWidth: lineWidth,
|
|
Locale: arabic,
|
|
}
|
|
if alignOpposite {
|
|
ltrParams.Alignment = text.End
|
|
rtlParams.Alignment = text.Start
|
|
}
|
|
shaper.LayoutString(ltrParams, bidiSource)
|
|
for g, ok := shaper.NextGlyph(); ok; g, ok = shaper.NextGlyph() {
|
|
bidiLTR = append(bidiLTR, g)
|
|
}
|
|
shaper.LayoutString(rtlParams, bidiSource)
|
|
for g, ok := shaper.NextGlyph(); ok; g, ok = shaper.NextGlyph() {
|
|
bidiRTL = append(bidiRTL, g)
|
|
}
|
|
return shaper, bidiSource, bidiLTR, bidiRTL
|
|
}
|
|
|
|
// makeAccountingTestText shapes text designed to stress rune accounting
|
|
// logic within the index.
|
|
func makeAccountingTestText(str string, fontSize, lineWidth int) (txt []text.Glyph) {
|
|
ltrFace, _ := opentype.Parse(goregular.TTF)
|
|
rtlFace, _ := opentype.Parse(nsareg.TTF)
|
|
|
|
shaper := text.NewShaper(text.NoSystemFonts(), text.WithCollection([]font.FontFace{{
|
|
Font: font.Font{Typeface: "LTR"},
|
|
Face: ltrFace,
|
|
},
|
|
{
|
|
Font: font.Font{Typeface: "RTL"},
|
|
Face: rtlFace,
|
|
},
|
|
}))
|
|
params := text.Parameters{
|
|
PxPerEm: fixed.I(fontSize),
|
|
MaxWidth: lineWidth,
|
|
Locale: english,
|
|
}
|
|
shaper.LayoutString(params, str)
|
|
for g, ok := shaper.NextGlyph(); ok; g, ok = shaper.NextGlyph() {
|
|
txt = append(txt, g)
|
|
}
|
|
return txt
|
|
}
|
|
|
|
// getGlyphs shapes text as english.
|
|
func getGlyphs(fontSize, minWidth, lineWidth int, align text.Alignment, str string) (txt []text.Glyph) {
|
|
ltrFace, _ := opentype.Parse(goregular.TTF)
|
|
rtlFace, _ := opentype.Parse(nsareg.TTF)
|
|
|
|
shaper := text.NewShaper(text.NoSystemFonts(), text.WithCollection([]font.FontFace{{
|
|
Font: font.Font{Typeface: "LTR"},
|
|
Face: ltrFace,
|
|
},
|
|
{
|
|
Font: font.Font{Typeface: "RTL"},
|
|
Face: rtlFace,
|
|
},
|
|
}))
|
|
params := text.Parameters{
|
|
PxPerEm: fixed.I(fontSize),
|
|
Alignment: align,
|
|
MinWidth: minWidth,
|
|
MaxWidth: lineWidth,
|
|
Locale: english,
|
|
WrapPolicy: text.WrapWords,
|
|
}
|
|
shaper.LayoutString(params, str)
|
|
for g, ok := shaper.NextGlyph(); ok; g, ok = shaper.NextGlyph() {
|
|
txt = append(txt, g)
|
|
}
|
|
return txt
|
|
}
|
|
|
|
// TestIndexPositionWhitespace checks that the index correctly generates cursor positions
|
|
// for empty lines and the empty string.
|
|
func TestIndexPositionWhitespace(t *testing.T) {
|
|
type testcase struct {
|
|
name string
|
|
str string
|
|
lineWidth int
|
|
align text.Alignment
|
|
expected []combinedPos
|
|
}
|
|
for _, tc := range []testcase{
|
|
{
|
|
name: "empty string",
|
|
str: "",
|
|
lineWidth: 200,
|
|
expected: []combinedPos{
|
|
{x: fixed.Int26_6(0), y: 16, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216)},
|
|
},
|
|
},
|
|
{
|
|
name: "just hard newline",
|
|
str: "\n",
|
|
lineWidth: 200,
|
|
expected: []combinedPos{
|
|
{x: fixed.Int26_6(0), y: 16, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216)},
|
|
{x: fixed.Int26_6(0), y: 35, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), runes: 1, lineCol: screenPos{line: 1}},
|
|
},
|
|
},
|
|
{
|
|
name: "trailing newline",
|
|
str: "a\n",
|
|
lineWidth: 200,
|
|
expected: []combinedPos{
|
|
{x: fixed.Int26_6(0), y: 16, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216)},
|
|
{x: fixed.Int26_6(570), y: 16, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), runes: 1, lineCol: screenPos{col: 1}},
|
|
{x: fixed.Int26_6(0), y: 35, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), runes: 2, lineCol: screenPos{line: 1}},
|
|
},
|
|
},
|
|
{
|
|
name: "just blank line",
|
|
str: "\n\n",
|
|
lineWidth: 200,
|
|
expected: []combinedPos{
|
|
{x: fixed.Int26_6(0), y: 16, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216)},
|
|
{x: fixed.Int26_6(0), y: 35, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), runes: 1, lineCol: screenPos{line: 1}},
|
|
{x: fixed.Int26_6(0), y: 54, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), runes: 2, lineCol: screenPos{line: 2}},
|
|
},
|
|
},
|
|
{
|
|
name: "middle aligned blank lines",
|
|
str: "\n\n\nabc",
|
|
align: text.Middle,
|
|
lineWidth: 200,
|
|
expected: []combinedPos{
|
|
{x: fixed.Int26_6(832), y: 16, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216)},
|
|
{x: fixed.Int26_6(832), y: 35, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), runes: 1, lineCol: screenPos{line: 1}},
|
|
{x: fixed.Int26_6(832), y: 54, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), runes: 2, lineCol: screenPos{line: 2}},
|
|
{x: fixed.Int26_6(6), y: 73, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), runes: 3, lineCol: screenPos{line: 3}},
|
|
{x: fixed.Int26_6(576), y: 73, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), runes: 4, lineCol: screenPos{line: 3, col: 1}},
|
|
{x: fixed.Int26_6(1146), y: 73, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), runes: 5, lineCol: screenPos{line: 3, col: 2}},
|
|
{x: fixed.Int26_6(1658), y: 73, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), runes: 6, lineCol: screenPos{line: 3, col: 3}},
|
|
},
|
|
},
|
|
{
|
|
name: "blank line",
|
|
str: "a\n\nb",
|
|
lineWidth: 200,
|
|
expected: []combinedPos{
|
|
{x: fixed.Int26_6(0), y: 16, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216)},
|
|
{x: fixed.Int26_6(570), y: 16, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), runes: 1, lineCol: screenPos{col: 1}},
|
|
{x: fixed.Int26_6(0), y: 35, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), runes: 2, lineCol: screenPos{line: 1}},
|
|
{x: fixed.Int26_6(0), y: 54, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), runes: 3, lineCol: screenPos{line: 2}},
|
|
{x: fixed.Int26_6(570), y: 54, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), runes: 4, lineCol: screenPos{line: 2, col: 1}},
|
|
},
|
|
},
|
|
{
|
|
name: "soft wrap",
|
|
str: "abc def",
|
|
lineWidth: 30,
|
|
expected: []combinedPos{
|
|
{runes: 0, lineCol: screenPos{line: 0, col: 0}, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), x: 0, y: 16},
|
|
{runes: 1, lineCol: screenPos{line: 0, col: 1}, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), x: 570, y: 16},
|
|
{runes: 2, lineCol: screenPos{line: 0, col: 2}, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), x: 1140, y: 16},
|
|
{runes: 3, lineCol: screenPos{line: 0, col: 3}, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), x: 1652, y: 16},
|
|
{runes: 4, lineCol: screenPos{line: 1, col: 0}, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), x: 0, y: 35},
|
|
{runes: 5, lineCol: screenPos{line: 1, col: 1}, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), x: 570, y: 35},
|
|
{runes: 6, lineCol: screenPos{line: 1, col: 2}, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), x: 1140, y: 35},
|
|
{runes: 7, lineCol: screenPos{line: 1, col: 3}, ascent: fixed.Int26_6(968), descent: fixed.Int26_6(216), x: 1425, y: 35},
|
|
},
|
|
},
|
|
{
|
|
name: "soft wrap arabic",
|
|
str: "ثنائي الاتجاه",
|
|
lineWidth: 30,
|
|
expected: []combinedPos{
|
|
{runes: 0, lineCol: screenPos{line: 0, col: 0}, ascent: 1407, descent: 756, x: 2250, y: 22, towardOrigin: true},
|
|
{runes: 1, lineCol: screenPos{line: 0, col: 1}, ascent: 1407, descent: 756, x: 1944, y: 22, towardOrigin: true},
|
|
{runes: 2, lineCol: screenPos{line: 0, col: 2}, ascent: 1407, descent: 756, x: 1593, y: 22, towardOrigin: true},
|
|
{runes: 3, lineCol: screenPos{line: 0, col: 3}, ascent: 1407, descent: 756, x: 1295, y: 22, towardOrigin: true},
|
|
{runes: 4, lineCol: screenPos{line: 0, col: 4}, ascent: 1407, descent: 756, x: 1020, y: 22, towardOrigin: true},
|
|
{runes: 5, lineCol: screenPos{line: 0, col: 5}, ascent: 1407, descent: 756, x: 266, y: 22, towardOrigin: true},
|
|
{runes: 6, lineCol: screenPos{line: 1, col: 0}, ascent: 1407, descent: 756, x: 2511, y: 41, towardOrigin: true},
|
|
{runes: 7, lineCol: screenPos{line: 1, col: 1}, ascent: 1407, descent: 756, x: 2267, y: 41, towardOrigin: true},
|
|
{runes: 8, lineCol: screenPos{line: 1, col: 2}, ascent: 1407, descent: 756, x: 1969, y: 41, towardOrigin: true},
|
|
{runes: 9, lineCol: screenPos{line: 1, col: 3}, ascent: 1407, descent: 756, x: 1671, y: 41, towardOrigin: true},
|
|
{runes: 10, lineCol: screenPos{line: 1, col: 4}, ascent: 1407, descent: 756, x: 1365, y: 41, towardOrigin: true},
|
|
{runes: 11, lineCol: screenPos{line: 1, col: 5}, ascent: 1407, descent: 756, x: 713, y: 41, towardOrigin: true},
|
|
{runes: 12, lineCol: screenPos{line: 1, col: 6}, ascent: 1407, descent: 756, x: 415, y: 41, towardOrigin: true},
|
|
{runes: 13, lineCol: screenPos{line: 1, col: 7}, ascent: 1407, descent: 756, x: 0, y: 41, towardOrigin: true},
|
|
},
|
|
},
|
|
} {
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
glyphs := getGlyphs(16, 0, tc.lineWidth, tc.align, tc.str)
|
|
var gi glyphIndex
|
|
gi.reset()
|
|
for _, g := range glyphs {
|
|
gi.Glyph(g)
|
|
}
|
|
if len(gi.positions) != len(tc.expected) {
|
|
t.Errorf("expected %d positions, got %d", len(tc.expected), len(gi.positions))
|
|
}
|
|
for i := 0; i < min(len(gi.positions), len(tc.expected)); i++ {
|
|
actual := gi.positions[i]
|
|
expected := tc.expected[i]
|
|
if actual != expected {
|
|
t.Errorf("position %d: expected:\n%#+v, got:\n%#+v", i, expected, actual)
|
|
}
|
|
}
|
|
if t.Failed() {
|
|
printPositions(t, gi.positions)
|
|
printGlyphs(t, glyphs)
|
|
}
|
|
})
|
|
}
|
|
|
|
}
|
|
|
|
// TestIndexPositionBidi tests whether the index correct generates cursor positions for
|
|
// complex bidirectional text.
|
|
func TestIndexPositionBidi(t *testing.T) {
|
|
fontSize := 16
|
|
lineWidth := fontSize * 10
|
|
shaper, _, bidiLTRText, bidiRTLText := makePosTestText(fontSize, lineWidth, false)
|
|
type testcase struct {
|
|
name string
|
|
glyphs []text.Glyph
|
|
expectedXs []fixed.Int26_6
|
|
}
|
|
for _, tc := range []testcase{
|
|
{
|
|
name: "bidi ltr",
|
|
glyphs: bidiLTRText,
|
|
expectedXs: []fixed.Int26_6{
|
|
0, 626, 1196, 1766, 2051, 2621, 3191, 3444, 3956, 4468, 4753, 7133, 6330, 5738, 5440, 5019, // Positions on line 0.
|
|
|
|
3953, 3185, 2417, 1649, 881, 596, 298, 0, 3953, 4238, 4523, 5093, 5605, 5890, 7905, 7599, 7007, 6156, // Positions on line 1.
|
|
|
|
4660, 3892, 3124, 2356, 1588, 1303, 788, 406, 0, 4660, 4945, 5235, 5805, 6375, 6660, 6934, 7504, 8016, 8528, // Positions on line 2.
|
|
|
|
0, 570, 1140, 1710, 2034, // Positions on line 3.
|
|
},
|
|
},
|
|
{
|
|
name: "bidi rtl",
|
|
glyphs: bidiRTLText,
|
|
expectedXs: []fixed.Int26_6{
|
|
// Line 0
|
|
5718, 6344, 6914, 7484, 7769, 8339, 8909, 9162, 9674, 10186, 5718, 5452, 4649, 4057, 3759, 3338, 3072, 2304, 1536, 768, 0,
|
|
// Line 1
|
|
9170, 8872, 8574, 8308, 6941, 7226, 7796, 8308, 6941, 6675, 6369, 5777, 4926, 4660, 3892, 3124, 2356, 1588, 1303, 788, 406, 0,
|
|
// Line 2
|
|
324, 614, 1184, 1754, 2039, 2313, 2883, 3395, 3907, 4192, 4762, 5332, 5902, 324, 0,
|
|
},
|
|
},
|
|
} {
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
var gi glyphIndex
|
|
gi.reset()
|
|
for _, g := range tc.glyphs {
|
|
gi.Glyph(g)
|
|
}
|
|
if len(gi.positions) != len(tc.expectedXs) {
|
|
t.Errorf("expected %d positions, got %d", len(tc.expectedXs), len(gi.positions))
|
|
}
|
|
lastRunes := 0
|
|
lastLine := 0
|
|
lastCol := -1
|
|
lastY := 0
|
|
for i := 0; i < min(len(gi.positions), len(tc.expectedXs)); i++ {
|
|
actualX := gi.positions[i].x
|
|
expectedX := tc.expectedXs[i]
|
|
if actualX != expectedX {
|
|
t.Errorf("position %d: expected x=%v(%d), got x=%v(%d)", i, expectedX, expectedX, actualX, actualX)
|
|
}
|
|
if r := gi.positions[i].runes; r < lastRunes {
|
|
t.Errorf("position %d: expected runes >= %d, got %d", i, lastRunes, r)
|
|
}
|
|
lastRunes = gi.positions[i].runes
|
|
if y := gi.positions[i].y; y < lastY {
|
|
t.Errorf("position %d: expected y>= %d, got %d", i, lastY, y)
|
|
}
|
|
lastY = gi.positions[i].y
|
|
if y := gi.positions[i].y; y < lastY {
|
|
t.Errorf("position %d: expected y>= %d, got %d", i, lastY, y)
|
|
}
|
|
lastY = gi.positions[i].y
|
|
if lineCol := gi.positions[i].lineCol; lineCol.line == lastLine && lineCol.col < lastCol {
|
|
t.Errorf("position %d: expected col >= %d, got %d", i, lastCol, lineCol.col)
|
|
}
|
|
lastCol = gi.positions[i].lineCol.col
|
|
if line := gi.positions[i].lineCol.line; line < lastLine {
|
|
t.Errorf("position %d: expected line >= %d, got %d", i, lastLine, line)
|
|
}
|
|
lastLine = gi.positions[i].lineCol.line
|
|
}
|
|
printPositions(t, gi.positions)
|
|
if t.Failed() {
|
|
printGlyphs(t, tc.glyphs)
|
|
width := lineWidth
|
|
height := 100
|
|
cap := image.NewRGBA(image.Rect(0, 0, width, height))
|
|
w, _ := headless.NewWindow(width, height)
|
|
defer w.Release()
|
|
ops := new(op.Ops)
|
|
gtx := layout.Context{
|
|
Constraints: layout.Constraints{Max: image.Pt(width, height)},
|
|
Ops: ops,
|
|
}
|
|
it := textIterator{viewport: image.Rectangle{Max: image.Point{X: width, Y: height}}}
|
|
for _, g := range tc.glyphs {
|
|
it.processGlyph(g, true)
|
|
}
|
|
var glyphs [32]text.Glyph
|
|
line := glyphs[:0]
|
|
for _, g := range gi.glyphs {
|
|
var ok bool
|
|
if line, ok = it.paintGlyph(gtx, shaper, g, line); !ok {
|
|
break
|
|
}
|
|
}
|
|
w.Frame(ops)
|
|
w.Screenshot(cap)
|
|
b := new(bytes.Buffer)
|
|
_ = png.Encode(b, cap)
|
|
screenshotName := tc.name + ".png"
|
|
_ = os.WriteFile(screenshotName, b.Bytes(), 0o644)
|
|
t.Logf("wrote %q", screenshotName)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestIndexPositionLines(t *testing.T) {
|
|
fontSize := 16
|
|
lineWidth := fontSize * 10
|
|
_, source1, bidiLTRText, bidiRTLText := makePosTestText(fontSize, lineWidth, false)
|
|
_, source2, bidiLTRTextOpp, bidiRTLTextOpp := makePosTestText(fontSize, lineWidth, true)
|
|
type testcase struct {
|
|
name string
|
|
source string
|
|
glyphs []text.Glyph
|
|
expectedLines []lineInfo
|
|
}
|
|
for _, tc := range []testcase{
|
|
{
|
|
name: "bidi ltr",
|
|
source: source1,
|
|
glyphs: bidiLTRText,
|
|
expectedLines: []lineInfo{
|
|
{
|
|
xOff: fixed.Int26_6(0),
|
|
yOff: 22,
|
|
glyphs: 15,
|
|
width: fixed.Int26_6(7133),
|
|
ascent: fixed.Int26_6(1407),
|
|
descent: fixed.Int26_6(756),
|
|
},
|
|
{
|
|
xOff: fixed.Int26_6(0),
|
|
yOff: 41,
|
|
glyphs: 15,
|
|
width: fixed.Int26_6(7905),
|
|
ascent: fixed.Int26_6(1407),
|
|
descent: fixed.Int26_6(756),
|
|
},
|
|
{
|
|
xOff: fixed.Int26_6(0),
|
|
yOff: 60,
|
|
glyphs: 18,
|
|
width: fixed.Int26_6(8528),
|
|
ascent: fixed.Int26_6(1407),
|
|
descent: fixed.Int26_6(756),
|
|
},
|
|
{
|
|
xOff: fixed.Int26_6(0),
|
|
yOff: 79,
|
|
glyphs: 4,
|
|
width: fixed.Int26_6(2034),
|
|
ascent: fixed.Int26_6(968),
|
|
descent: fixed.Int26_6(216),
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "bidi rtl",
|
|
source: source1,
|
|
glyphs: bidiRTLText,
|
|
expectedLines: []lineInfo{
|
|
{
|
|
xOff: fixed.Int26_6(0),
|
|
yOff: 22,
|
|
glyphs: 20,
|
|
width: fixed.Int26_6(10186),
|
|
ascent: fixed.Int26_6(1407),
|
|
descent: fixed.Int26_6(756),
|
|
},
|
|
{
|
|
xOff: fixed.Int26_6(0),
|
|
yOff: 41,
|
|
glyphs: 19,
|
|
width: fixed.Int26_6(9170),
|
|
ascent: fixed.Int26_6(1407),
|
|
descent: fixed.Int26_6(756),
|
|
},
|
|
{
|
|
xOff: fixed.Int26_6(0),
|
|
yOff: 60,
|
|
glyphs: 13,
|
|
width: fixed.Int26_6(5902),
|
|
ascent: fixed.Int26_6(968),
|
|
descent: fixed.Int26_6(216),
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "bidi ltr opposite alignment",
|
|
source: source2,
|
|
glyphs: bidiLTRTextOpp,
|
|
expectedLines: []lineInfo{
|
|
{
|
|
xOff: fixed.Int26_6(3107),
|
|
yOff: 22,
|
|
glyphs: 15,
|
|
width: fixed.Int26_6(7133),
|
|
ascent: fixed.Int26_6(1407),
|
|
descent: fixed.Int26_6(756),
|
|
},
|
|
{
|
|
xOff: fixed.Int26_6(2335),
|
|
yOff: 41,
|
|
glyphs: 15,
|
|
width: fixed.Int26_6(7905),
|
|
ascent: fixed.Int26_6(1407),
|
|
descent: fixed.Int26_6(756),
|
|
},
|
|
{
|
|
xOff: fixed.Int26_6(1712),
|
|
yOff: 60,
|
|
glyphs: 18,
|
|
width: fixed.Int26_6(8528),
|
|
ascent: fixed.Int26_6(1407),
|
|
descent: fixed.Int26_6(756),
|
|
},
|
|
{
|
|
xOff: fixed.Int26_6(8206),
|
|
yOff: 79,
|
|
glyphs: 4,
|
|
width: fixed.Int26_6(2034),
|
|
ascent: fixed.Int26_6(968),
|
|
descent: fixed.Int26_6(216),
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "bidi rtl opposite alignment",
|
|
source: source2,
|
|
glyphs: bidiRTLTextOpp,
|
|
expectedLines: []lineInfo{
|
|
{
|
|
xOff: fixed.Int26_6(54),
|
|
yOff: 22,
|
|
glyphs: 20,
|
|
width: fixed.Int26_6(10186),
|
|
ascent: fixed.Int26_6(1407),
|
|
descent: fixed.Int26_6(756),
|
|
},
|
|
{
|
|
xOff: fixed.Int26_6(1070),
|
|
yOff: 41,
|
|
glyphs: 19,
|
|
width: fixed.Int26_6(9170),
|
|
ascent: fixed.Int26_6(1407),
|
|
descent: fixed.Int26_6(756),
|
|
},
|
|
{
|
|
xOff: fixed.Int26_6(4338),
|
|
yOff: 60,
|
|
glyphs: 13,
|
|
width: fixed.Int26_6(5902),
|
|
ascent: fixed.Int26_6(968),
|
|
descent: fixed.Int26_6(216),
|
|
},
|
|
},
|
|
},
|
|
} {
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
var gi glyphIndex
|
|
gi.reset()
|
|
for _, g := range tc.glyphs {
|
|
gi.Glyph(g)
|
|
}
|
|
if len(gi.lines) != len(tc.expectedLines) {
|
|
t.Errorf("expected %d lines, got %d", len(tc.expectedLines), len(gi.lines))
|
|
}
|
|
for i := 0; i < min(len(gi.lines), len(tc.expectedLines)); i++ {
|
|
actual := gi.lines[i]
|
|
expected := tc.expectedLines[i]
|
|
if actual != expected {
|
|
t.Errorf("line %d: expected:\n%#+v, got:\n%#+v", i, expected, actual)
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
// TestIndexPositionRunes checks for rune accounting errors in positions
|
|
// generated by the index.
|
|
func TestIndexPositionRunes(t *testing.T) {
|
|
fontSize := 16
|
|
lineWidth := fontSize * 10
|
|
// source is crafted to contain multiple consecutive RTL runs (by
|
|
// changing scripts within the RTL).
|
|
source := "The\nquick سماء של\nום لا fox\nتمط של\nום."
|
|
testText := makeAccountingTestText(source, fontSize, lineWidth)
|
|
type testcase struct {
|
|
name string
|
|
source string
|
|
glyphs []text.Glyph
|
|
expected []combinedPos
|
|
}
|
|
for _, tc := range []testcase{
|
|
{
|
|
name: "many newlines",
|
|
source: source,
|
|
glyphs: testText,
|
|
expected: []combinedPos{
|
|
{runes: 0, lineCol: screenPos{line: 0, col: 0}, runIndex: 0, towardOrigin: false},
|
|
{runes: 1, lineCol: screenPos{line: 0, col: 1}, runIndex: 0, towardOrigin: false},
|
|
{runes: 2, lineCol: screenPos{line: 0, col: 2}, runIndex: 0, towardOrigin: false},
|
|
{runes: 3, lineCol: screenPos{line: 0, col: 3}, runIndex: 0, towardOrigin: false},
|
|
{runes: 4, lineCol: screenPos{line: 1, col: 0}, runIndex: 0, towardOrigin: false},
|
|
{runes: 5, lineCol: screenPos{line: 1, col: 1}, runIndex: 0, towardOrigin: false},
|
|
{runes: 6, lineCol: screenPos{line: 1, col: 2}, runIndex: 0, towardOrigin: false},
|
|
{runes: 7, lineCol: screenPos{line: 1, col: 3}, runIndex: 0, towardOrigin: false},
|
|
{runes: 8, lineCol: screenPos{line: 1, col: 4}, runIndex: 0, towardOrigin: false},
|
|
{runes: 9, lineCol: screenPos{line: 1, col: 5}, runIndex: 0, towardOrigin: false},
|
|
{runes: 10, lineCol: screenPos{line: 1, col: 6}, runIndex: 0, towardOrigin: false},
|
|
{runes: 10, lineCol: screenPos{line: 1, col: 6}, runIndex: 1, towardOrigin: true},
|
|
{runes: 11, lineCol: screenPos{line: 1, col: 7}, runIndex: 1, towardOrigin: true},
|
|
{runes: 12, lineCol: screenPos{line: 1, col: 8}, runIndex: 1, towardOrigin: true},
|
|
{runes: 13, lineCol: screenPos{line: 1, col: 9}, runIndex: 1, towardOrigin: true},
|
|
{runes: 14, lineCol: screenPos{line: 1, col: 10}, runIndex: 1, towardOrigin: true},
|
|
{runes: 15, lineCol: screenPos{line: 1, col: 11}, runIndex: 2, towardOrigin: true},
|
|
{runes: 16, lineCol: screenPos{line: 1, col: 12}, runIndex: 2, towardOrigin: true},
|
|
{runes: 17, lineCol: screenPos{line: 1, col: 13}, runIndex: 2, towardOrigin: true},
|
|
{runes: 18, lineCol: screenPos{line: 2, col: 0}, runIndex: 0, towardOrigin: true},
|
|
{runes: 19, lineCol: screenPos{line: 2, col: 1}, runIndex: 0, towardOrigin: true},
|
|
{runes: 20, lineCol: screenPos{line: 2, col: 2}, runIndex: 0, towardOrigin: true},
|
|
{runes: 21, lineCol: screenPos{line: 2, col: 3}, runIndex: 1, towardOrigin: true},
|
|
{runes: 22, lineCol: screenPos{line: 2, col: 4}, runIndex: 1, towardOrigin: true},
|
|
{runes: 23, lineCol: screenPos{line: 2, col: 5}, runIndex: 1, towardOrigin: true},
|
|
{runes: 24, lineCol: screenPos{line: 2, col: 6}, runIndex: 1, towardOrigin: true},
|
|
{runes: 24, lineCol: screenPos{line: 2, col: 6}, runIndex: 2, towardOrigin: false},
|
|
{runes: 25, lineCol: screenPos{line: 2, col: 7}, runIndex: 2, towardOrigin: false},
|
|
{runes: 26, lineCol: screenPos{line: 2, col: 8}, runIndex: 2, towardOrigin: false},
|
|
{runes: 27, lineCol: screenPos{line: 2, col: 9}, runIndex: 2, towardOrigin: false},
|
|
{runes: 28, lineCol: screenPos{line: 3, col: 0}, runIndex: 0, towardOrigin: true},
|
|
{runes: 29, lineCol: screenPos{line: 3, col: 1}, runIndex: 0, towardOrigin: true},
|
|
{runes: 30, lineCol: screenPos{line: 3, col: 2}, runIndex: 0, towardOrigin: true},
|
|
{runes: 31, lineCol: screenPos{line: 3, col: 3}, runIndex: 0, towardOrigin: true},
|
|
{runes: 32, lineCol: screenPos{line: 3, col: 4}, runIndex: 1, towardOrigin: true},
|
|
{runes: 33, lineCol: screenPos{line: 3, col: 5}, runIndex: 1, towardOrigin: true},
|
|
{runes: 34, lineCol: screenPos{line: 3, col: 6}, runIndex: 1, towardOrigin: true},
|
|
{runes: 35, lineCol: screenPos{line: 4, col: 0}, runIndex: 0, towardOrigin: true},
|
|
{runes: 36, lineCol: screenPos{line: 4, col: 1}, runIndex: 0, towardOrigin: true},
|
|
{runes: 37, lineCol: screenPos{line: 4, col: 2}, runIndex: 0, towardOrigin: true},
|
|
{runes: 38, lineCol: screenPos{line: 4, col: 3}, runIndex: 0, towardOrigin: true},
|
|
},
|
|
},
|
|
} {
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
var gi glyphIndex
|
|
gi.reset()
|
|
for _, g := range tc.glyphs {
|
|
gi.Glyph(g)
|
|
}
|
|
if len(gi.positions) != len(tc.expected) {
|
|
t.Errorf("expected %d positions, got %d", len(tc.expected), len(gi.positions))
|
|
}
|
|
for i := 0; i < min(len(gi.positions), len(tc.expected)); i++ {
|
|
actual := gi.positions[i]
|
|
expected := tc.expected[i]
|
|
if expected.runes != actual.runes {
|
|
t.Errorf("position %d: expected runes=%d, got %d", i, expected.runes, actual.runes)
|
|
}
|
|
if expected.lineCol != actual.lineCol {
|
|
t.Errorf("position %d: expected lineCol=%v, got %v", i, expected.lineCol, actual.lineCol)
|
|
}
|
|
if expected.runIndex != actual.runIndex {
|
|
t.Errorf("position %d: expected runIndex=%d, got %d", i, expected.runIndex, actual.runIndex)
|
|
}
|
|
if expected.towardOrigin != actual.towardOrigin {
|
|
t.Errorf("position %d: expected towardOrigin=%v, got %v", i, expected.towardOrigin, actual.towardOrigin)
|
|
}
|
|
}
|
|
printPositions(t, gi.positions)
|
|
if t.Failed() {
|
|
printGlyphs(t, tc.glyphs)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
func printPositions(t *testing.T, positions []combinedPos) {
|
|
t.Helper()
|
|
for i, p := range positions {
|
|
t.Logf("positions[%2d] = {runes: %2d, line: %2d, col: %2d, x: %5d, y: %3d}", i, p.runes, p.lineCol.line, p.lineCol.col, p.x, p.y)
|
|
}
|
|
}
|
|
|
|
func printGlyphs(t *testing.T, glyphs []text.Glyph) {
|
|
t.Helper()
|
|
for i, g := range glyphs {
|
|
t.Logf("glyphs[%2d] = {ID: 0x%013x, Flags: %4s, Advance: %4d(%6v), Runes: %d, Y: %3d, X: %4d(%6v)} ", i, g.ID, g.Flags, g.Advance, g.Advance, g.Runes, g.Y, g.X, g.X)
|
|
}
|
|
}
|
|
|
|
func TestGraphemeReaderNext(t *testing.T) {
|
|
latinDoc := bytes.NewReader([]byte(latinDocument))
|
|
arabicDoc := bytes.NewReader([]byte(arabicDocument))
|
|
emojiDoc := bytes.NewReader([]byte(emojiDocument))
|
|
complexDoc := bytes.NewReader([]byte(complexDocument))
|
|
type testcase struct {
|
|
name string
|
|
input *bytes.Reader
|
|
read func() ([]rune, bool)
|
|
}
|
|
var pr graphemeReader
|
|
for _, tc := range []testcase{
|
|
{
|
|
name: "latin",
|
|
input: latinDoc,
|
|
read: pr.next,
|
|
},
|
|
{
|
|
name: "arabic",
|
|
input: arabicDoc,
|
|
read: pr.next,
|
|
},
|
|
{
|
|
name: "emoji",
|
|
input: emojiDoc,
|
|
read: pr.next,
|
|
},
|
|
{
|
|
name: "complex",
|
|
input: complexDoc,
|
|
read: pr.next,
|
|
},
|
|
} {
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
pr.SetSource(tc.input)
|
|
|
|
runes := []rune{}
|
|
var paragraph []rune
|
|
ok := true
|
|
for ok {
|
|
paragraph, ok = tc.read()
|
|
if ok && len(paragraph) > 0 && paragraph[len(paragraph)-1] != '\n' {
|
|
}
|
|
for i, r := range paragraph {
|
|
if i == len(paragraph)-1 {
|
|
if r != '\n' && ok {
|
|
t.Error("non-final paragraph does not end with newline")
|
|
}
|
|
} else if r == '\n' {
|
|
t.Errorf("paragraph[%d] contains newline", i)
|
|
}
|
|
}
|
|
runes = append(runes, paragraph...)
|
|
}
|
|
tc.input.Seek(0, 0)
|
|
b, _ := io.ReadAll(tc.input)
|
|
asRunes := []rune(string(b))
|
|
if len(asRunes) != len(runes) {
|
|
t.Errorf("expected %d runes, got %d", len(asRunes), len(runes))
|
|
}
|
|
for i := 0; i < max(len(asRunes), len(runes)); i++ {
|
|
if i < min(len(asRunes), len(runes)) {
|
|
if runes[i] != asRunes[i] {
|
|
t.Errorf("expected runes[%d]=%d, got %d", i, asRunes[i], runes[i])
|
|
}
|
|
} else if i < len(asRunes) {
|
|
t.Errorf("expected runes[%d]=%d, got nothing", i, asRunes[i])
|
|
} else if i < len(runes) {
|
|
t.Errorf("expected runes[%d]=nothing, got %d", i, runes[i])
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
func TestGraphemeReaderGraphemes(t *testing.T) {
|
|
latinDoc := bytes.NewReader([]byte(latinDocument))
|
|
arabicDoc := bytes.NewReader([]byte(arabicDocument))
|
|
emojiDoc := bytes.NewReader([]byte(emojiDocument))
|
|
complexDoc := bytes.NewReader([]byte(complexDocument))
|
|
type testcase struct {
|
|
name string
|
|
input *bytes.Reader
|
|
read func() []int
|
|
}
|
|
var pr graphemeReader
|
|
for _, tc := range []testcase{
|
|
{
|
|
name: "latin",
|
|
input: latinDoc,
|
|
read: pr.Graphemes,
|
|
},
|
|
{
|
|
name: "arabic",
|
|
input: arabicDoc,
|
|
read: pr.Graphemes,
|
|
},
|
|
{
|
|
name: "emoji",
|
|
input: emojiDoc,
|
|
read: pr.Graphemes,
|
|
},
|
|
{
|
|
name: "complex",
|
|
input: complexDoc,
|
|
read: pr.Graphemes,
|
|
},
|
|
} {
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
pr.SetSource(tc.input)
|
|
|
|
graphemes := []int{}
|
|
for g := tc.read(); len(g) > 0; g = tc.read() {
|
|
if len(graphemes) > 0 && g[0] != graphemes[len(graphemes)-1] {
|
|
t.Errorf("expected first boundary in new paragraph %d to match final boundary in previous %d", g[0], graphemes[len(graphemes)-1])
|
|
}
|
|
if len(graphemes) > 0 {
|
|
// Drop duplicated boundary.
|
|
g = g[1:]
|
|
}
|
|
graphemes = append(graphemes, g...)
|
|
}
|
|
tc.input.Seek(0, 0)
|
|
b, _ := io.ReadAll(tc.input)
|
|
asRunes := []rune(string(b))
|
|
if len(asRunes)+1 < len(graphemes) {
|
|
t.Errorf("expected <= %d graphemes, got %d", len(asRunes)+1, len(graphemes))
|
|
}
|
|
for i := 0; i < len(graphemes)-1; i++ {
|
|
if graphemes[i] >= graphemes[i+1] {
|
|
t.Errorf("graphemes[%d](%d) >= graphemes[%d](%d)", i, graphemes[i], i+1, graphemes[i+1])
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
func BenchmarkGraphemeReaderNext(b *testing.B) {
|
|
latinDoc := bytes.NewReader([]byte(latinDocument))
|
|
arabicDoc := bytes.NewReader([]byte(arabicDocument))
|
|
emojiDoc := bytes.NewReader([]byte(emojiDocument))
|
|
complexDoc := bytes.NewReader([]byte(complexDocument))
|
|
type testcase struct {
|
|
name string
|
|
input *bytes.Reader
|
|
read func() ([]rune, bool)
|
|
}
|
|
pr := &graphemeReader{}
|
|
for _, tc := range []testcase{
|
|
{
|
|
name: "latin",
|
|
input: latinDoc,
|
|
read: pr.next,
|
|
},
|
|
{
|
|
name: "arabic",
|
|
input: arabicDoc,
|
|
read: pr.next,
|
|
},
|
|
{
|
|
name: "emoji",
|
|
input: emojiDoc,
|
|
read: pr.next,
|
|
},
|
|
{
|
|
name: "complex",
|
|
input: complexDoc,
|
|
read: pr.next,
|
|
},
|
|
} {
|
|
var paragraph []rune = make([]rune, 4096)
|
|
b.Run(tc.name, func(b *testing.B) {
|
|
b.ResetTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
pr.SetSource(tc.input)
|
|
|
|
ok := true
|
|
for ok {
|
|
paragraph, ok = tc.read()
|
|
_ = paragraph
|
|
}
|
|
_ = paragraph
|
|
}
|
|
})
|
|
}
|
|
}
|
|
func BenchmarkGraphemeReaderGraphemes(b *testing.B) {
|
|
latinDoc := bytes.NewReader([]byte(latinDocument))
|
|
arabicDoc := bytes.NewReader([]byte(arabicDocument))
|
|
emojiDoc := bytes.NewReader([]byte(emojiDocument))
|
|
complexDoc := bytes.NewReader([]byte(complexDocument))
|
|
type testcase struct {
|
|
name string
|
|
input *bytes.Reader
|
|
read func() []int
|
|
}
|
|
pr := &graphemeReader{}
|
|
for _, tc := range []testcase{
|
|
{
|
|
name: "latin",
|
|
input: latinDoc,
|
|
read: pr.Graphemes,
|
|
},
|
|
{
|
|
name: "arabic",
|
|
input: arabicDoc,
|
|
read: pr.Graphemes,
|
|
},
|
|
{
|
|
name: "emoji",
|
|
input: emojiDoc,
|
|
read: pr.Graphemes,
|
|
},
|
|
{
|
|
name: "complex",
|
|
input: complexDoc,
|
|
read: pr.Graphemes,
|
|
},
|
|
} {
|
|
b.Run(tc.name, func(b *testing.B) {
|
|
b.ResetTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
pr.SetSource(tc.input)
|
|
for g := tc.read(); len(g) > 0; g = tc.read() {
|
|
_ = g
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|