mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-10 13:07:26 +01:00
243 lines
6.4 KiB
Go
243 lines
6.4 KiB
Go
// Copyright 2023 The Ebitengine Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package text_test
|
|
|
|
import (
|
|
"image"
|
|
"image/color"
|
|
"regexp"
|
|
"strings"
|
|
"testing"
|
|
|
|
"github.com/hajimehoshi/bitmapfont/v3"
|
|
"golang.org/x/image/font"
|
|
"golang.org/x/image/math/fixed"
|
|
|
|
"github.com/hajimehoshi/ebiten/v2"
|
|
t "github.com/hajimehoshi/ebiten/v2/internal/testing"
|
|
"github.com/hajimehoshi/ebiten/v2/text/v2"
|
|
)
|
|
|
|
func TestMain(m *testing.M) {
|
|
t.MainWithRunLoop(m)
|
|
}
|
|
|
|
func TestGlyphIndex(t *testing.T) {
|
|
const sampleText = `The quick brown fox jumps
|
|
over the lazy dog.`
|
|
|
|
f := text.NewStdFace(bitmapfont.Face)
|
|
got := sampleText
|
|
for _, g := range text.AppendGlyphs(nil, sampleText, f, nil) {
|
|
got = got[:g.StartIndexInBytes] + strings.Repeat(" ", g.EndIndexInBytes-g.StartIndexInBytes) + got[g.EndIndexInBytes:]
|
|
}
|
|
want := regexp.MustCompile(`\S`).ReplaceAllString(sampleText, " ")
|
|
if got != want {
|
|
t.Errorf("got: %q, want: %q", got, want)
|
|
}
|
|
}
|
|
|
|
func TestTextColor(t *testing.T) {
|
|
clr := color.RGBA{R: 0x80, G: 0x80, B: 0x80, A: 0x80}
|
|
img := ebiten.NewImage(30, 30)
|
|
op := &text.DrawOptions{}
|
|
op.GeoM.Translate(0, 0)
|
|
op.ColorScale.ScaleWithColor(clr)
|
|
text.Draw(img, "Hello", text.NewStdFace(bitmapfont.Face), op)
|
|
|
|
w, h := img.Bounds().Dx(), img.Bounds().Dy()
|
|
allTransparent := true
|
|
for j := 0; j < h; j++ {
|
|
for i := 0; i < w; i++ {
|
|
got := img.At(i, j)
|
|
want1 := color.RGBA{R: 0x80, G: 0x80, B: 0x80, A: 0x80}
|
|
want2 := color.RGBA{}
|
|
if got != want1 && got != want2 {
|
|
t.Errorf("img At(%d, %d): got %v; want %v or %v", i, j, got, want1, want2)
|
|
}
|
|
if got == want1 {
|
|
allTransparent = false
|
|
}
|
|
}
|
|
}
|
|
if allTransparent {
|
|
t.Fail()
|
|
}
|
|
}
|
|
|
|
const testStdFaceSize = 6
|
|
|
|
type testStdFace struct{}
|
|
|
|
func (f *testStdFace) Glyph(dot fixed.Point26_6, r rune) (dr image.Rectangle, mask image.Image, maskp image.Point, advance fixed.Int26_6, ok bool) {
|
|
dr = image.Rect(0, 0, testStdFaceSize, testStdFaceSize)
|
|
a := image.NewAlpha(dr)
|
|
switch r {
|
|
case 'a':
|
|
for j := dr.Min.Y; j < dr.Max.Y; j++ {
|
|
for i := dr.Min.X; i < dr.Max.X; i++ {
|
|
a.SetAlpha(i, j, color.Alpha{A: 0x80})
|
|
}
|
|
}
|
|
case 'b':
|
|
for j := dr.Min.Y; j < dr.Max.Y; j++ {
|
|
for i := dr.Min.X; i < dr.Max.X; i++ {
|
|
a.SetAlpha(i, j, color.Alpha{A: 0xff})
|
|
}
|
|
}
|
|
}
|
|
mask = a
|
|
advance = fixed.I(testStdFaceSize)
|
|
ok = true
|
|
return
|
|
}
|
|
|
|
func (f *testStdFace) GlyphBounds(r rune) (bounds fixed.Rectangle26_6, advance fixed.Int26_6, ok bool) {
|
|
bounds = fixed.R(0, 0, testStdFaceSize, testStdFaceSize)
|
|
advance = fixed.I(testStdFaceSize)
|
|
ok = true
|
|
return
|
|
}
|
|
|
|
func (f *testStdFace) GlyphAdvance(r rune) (advance fixed.Int26_6, ok bool) {
|
|
return fixed.I(testStdFaceSize), true
|
|
}
|
|
|
|
func (f *testStdFace) Kern(r0, r1 rune) fixed.Int26_6 {
|
|
if r1 == 'b' {
|
|
return fixed.I(-testStdFaceSize)
|
|
}
|
|
return 0
|
|
}
|
|
|
|
func (f *testStdFace) Close() error {
|
|
return nil
|
|
}
|
|
|
|
func (f *testStdFace) Metrics() font.Metrics {
|
|
return font.Metrics{
|
|
Height: fixed.I(testStdFaceSize),
|
|
Ascent: 0,
|
|
Descent: fixed.I(testStdFaceSize),
|
|
XHeight: 0,
|
|
CapHeight: fixed.I(testStdFaceSize),
|
|
CaretSlope: image.Pt(0, 1),
|
|
}
|
|
}
|
|
|
|
// Issue #1378
|
|
func TestNegativeKern(t *testing.T) {
|
|
f := text.NewStdFace(&testStdFace{})
|
|
dst := ebiten.NewImage(testStdFaceSize*2, testStdFaceSize)
|
|
|
|
// With testStdFace, 'b' is rendered at the previous position as 0xff.
|
|
// 'a' is rendered at the current position as 0x80.
|
|
op := &text.DrawOptions{}
|
|
op.GeoM.Translate(0, 0)
|
|
text.Draw(dst, "ab", f, op)
|
|
for j := 0; j < testStdFaceSize; j++ {
|
|
for i := 0; i < testStdFaceSize; i++ {
|
|
got := dst.At(i, j)
|
|
want := color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
|
|
if got != want {
|
|
t.Errorf("At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
// The glyph 'a' should be treated correctly.
|
|
op = &text.DrawOptions{}
|
|
op.GeoM.Translate(testStdFaceSize, 0)
|
|
text.Draw(dst, "a", f, op)
|
|
for j := 0; j < testStdFaceSize; j++ {
|
|
for i := testStdFaceSize; i < testStdFaceSize*2; i++ {
|
|
got := dst.At(i, j)
|
|
want := color.RGBA{R: 0x80, G: 0x80, B: 0x80, A: 0x80}
|
|
if got != want {
|
|
t.Errorf("At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
type unhashableStdFace func()
|
|
|
|
const unhashableStdFaceSize = 10
|
|
|
|
func (u *unhashableStdFace) Glyph(dot fixed.Point26_6, r rune) (dr image.Rectangle, mask image.Image, maskp image.Point, advance fixed.Int26_6, ok bool) {
|
|
dr = image.Rect(0, 0, unhashableStdFaceSize, unhashableStdFaceSize)
|
|
a := image.NewAlpha(dr)
|
|
for j := dr.Min.Y; j < dr.Max.Y; j++ {
|
|
for i := dr.Min.X; i < dr.Max.X; i++ {
|
|
a.SetAlpha(i, j, color.Alpha{A: 0xff})
|
|
}
|
|
}
|
|
mask = a
|
|
advance = fixed.I(unhashableStdFaceSize)
|
|
ok = true
|
|
return
|
|
}
|
|
|
|
func (u *unhashableStdFace) GlyphBounds(r rune) (bounds fixed.Rectangle26_6, advance fixed.Int26_6, ok bool) {
|
|
bounds = fixed.R(0, 0, unhashableStdFaceSize, unhashableStdFaceSize)
|
|
advance = fixed.I(unhashableStdFaceSize)
|
|
ok = true
|
|
return
|
|
}
|
|
|
|
func (u *unhashableStdFace) GlyphAdvance(r rune) (advance fixed.Int26_6, ok bool) {
|
|
return fixed.I(unhashableStdFaceSize), true
|
|
}
|
|
|
|
func (u *unhashableStdFace) Kern(r0, r1 rune) fixed.Int26_6 {
|
|
return 0
|
|
}
|
|
|
|
func (u *unhashableStdFace) Close() error {
|
|
return nil
|
|
}
|
|
|
|
func (u *unhashableStdFace) Metrics() font.Metrics {
|
|
return font.Metrics{
|
|
Height: fixed.I(unhashableStdFaceSize),
|
|
Ascent: 0,
|
|
Descent: fixed.I(unhashableStdFaceSize),
|
|
XHeight: 0,
|
|
CapHeight: fixed.I(unhashableStdFaceSize),
|
|
CaretSlope: image.Pt(0, 1),
|
|
}
|
|
}
|
|
|
|
// Issue #2669
|
|
func TestUnhashableFace(t *testing.T) {
|
|
var face unhashableStdFace
|
|
f := text.NewStdFace(&face)
|
|
dst := ebiten.NewImage(unhashableStdFaceSize*2, unhashableStdFaceSize*2)
|
|
text.Draw(dst, "a", f, nil)
|
|
|
|
for j := 0; j < unhashableStdFaceSize*2; j++ {
|
|
for i := 0; i < unhashableStdFaceSize*2; i++ {
|
|
got := dst.At(i, j)
|
|
var want color.RGBA
|
|
if i < unhashableStdFaceSize && j < unhashableStdFaceSize {
|
|
want = color.RGBA{R: 0xff, G: 0xff, B: 0xff, A: 0xff}
|
|
if got != want {
|
|
t.Errorf("At(%d, %d): got: %v, want: %v", i, j, got, want)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|