mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-09-20 13:22:19 +02:00
131 lines
3.2 KiB
Go
131 lines
3.2 KiB
Go
// Copyright 2020 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build example
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// +build example
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package main
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import (
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"image/color"
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"log"
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"math"
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"math/rand"
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"time"
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"golang.org/x/image/font"
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"golang.org/x/image/font/opentype"
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"github.com/hajimehoshi/ebiten/v2"
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"github.com/hajimehoshi/ebiten/v2/ebitenutil"
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"github.com/hajimehoshi/ebiten/v2/examples/resources/fonts"
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"github.com/hajimehoshi/ebiten/v2/text"
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)
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const (
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screenWidth = 640
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screenHeight = 480
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)
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const sampleText = `The quick brown fox jumps
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over the lazy dog.`
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var (
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mplusNormalFont font.Face
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mplusBigFont font.Face
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)
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func init() {
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tt, err := opentype.Parse(fonts.MPlus1pRegular_ttf)
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if err != nil {
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log.Fatal(err)
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}
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const dpi = 72
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mplusNormalFont, err = opentype.NewFace(tt, &opentype.FaceOptions{
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Size: 24,
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DPI: dpi,
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Hinting: font.HintingFull,
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})
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if err != nil {
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log.Fatal(err)
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}
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mplusBigFont, err = opentype.NewFace(tt, &opentype.FaceOptions{
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Size: 32,
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DPI: dpi,
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Hinting: font.HintingFull,
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})
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if err != nil {
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log.Fatal(err)
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}
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}
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func init() {
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rand.Seed(time.Now().UnixNano())
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}
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type Game struct {
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counter int
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kanjiText []rune
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kanjiTextColor color.RGBA
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}
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func (g *Game) Update() error {
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return nil
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}
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func (g *Game) Draw(screen *ebiten.Image) {
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gray := color.RGBA{0x80, 0x80, 0x80, 0xff}
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{
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const x, y = 20, 40
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b := text.BoundString(mplusNormalFont, sampleText)
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ebitenutil.DrawRect(screen, float64(b.Min.X+x), float64(b.Min.Y+y), float64(b.Dx()), float64(b.Dy()), gray)
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text.Draw(screen, sampleText, mplusNormalFont, x, y, color.White)
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}
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{
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const x, y = 20, 140
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b := text.BoundString(mplusBigFont, sampleText)
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ebitenutil.DrawRect(screen, float64(b.Min.X+x), float64(b.Min.Y+y), float64(b.Dx()), float64(b.Dy()), gray)
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text.Draw(screen, sampleText, mplusBigFont, x, y, color.White)
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}
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{
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const x, y = 20, 240
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op := &ebiten.DrawImageOptions{}
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op.GeoM.Rotate(math.Pi / 4)
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op.GeoM.Translate(x, y)
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op.Filter = ebiten.FilterLinear
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text.DrawWithOptions(screen, sampleText, mplusNormalFont, op)
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}
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{
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const x, y = 160, 240
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const lineHeight = 80
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b := text.BoundString(text.FaceWithLineHeight(mplusBigFont, lineHeight), sampleText)
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ebitenutil.DrawRect(screen, float64(b.Min.X+x), float64(b.Min.Y+y), float64(b.Dx()), float64(b.Dy()), gray)
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text.Draw(screen, sampleText, text.FaceWithLineHeight(mplusBigFont, lineHeight), x, y, color.White)
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}
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}
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func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
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return screenWidth, screenHeight
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}
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func main() {
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ebiten.SetWindowSize(screenWidth, screenHeight)
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ebiten.SetWindowTitle("Text (Ebiten Demo)")
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if err := ebiten.RunGame(&Game{}); err != nil {
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log.Fatal(err)
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}
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}
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