2015-01-08 15:45:30 +01:00
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<!DOCTYPE html>
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<!--
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2016-06-26 18:02:50 +02:00
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Copyright 2013 The Ebiten Authors
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2015-01-08 15:45:30 +01:00
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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-->
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2015-01-08 18:48:25 +01:00
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<link rel="shortcut icon" href="../favicon.png" type="image/png" >
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<link rel="icon" href="../favicon.png" type="image/png" >
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2015-01-08 19:29:59 +01:00
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<title>Ebiten example - keyboard</title>
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2015-01-08 15:45:30 +01:00
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<style>
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body {
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font-family: sans-serif;
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}
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iframe {
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border-color: #999;
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border-style: solid;
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border-width: 1px;
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overflow: hidden;
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}
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pre {
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background: #eee;
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padding: 1em;
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}
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</style>
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<nav><a href="..">Ebiten</a></nav>
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2015-01-08 19:29:59 +01:00
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<h1>Ebiten example - keyboard</h1>
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2015-01-08 15:45:30 +01:00
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<iframe src="keyboard.content.html" width="640" height="480"></iframe>
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2016-08-26 16:33:36 +02:00
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<pre><code>// +build example
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package main
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import (
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"log"
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"strconv"
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2015-01-08 15:45:30 +01:00
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"github.com/hajimehoshi/ebiten"
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"github.com/hajimehoshi/ebiten/ebitenutil"
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2016-02-10 19:07:14 +01:00
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"github.com/hajimehoshi/ebiten/examples/keyboard/keyboard"
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)
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const (
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screenWidth = 320
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screenHeight = 240
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)
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2015-01-20 16:51:55 +01:00
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var keyboardImage *ebiten.Image
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func init() {
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var err error
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2016-02-20 21:40:56 +01:00
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keyboardImage, _, err = ebitenutil.NewImageFromFile("_resources/images/keyboard/keyboard.png", ebiten.FilterNearest)
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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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var keyNames = map[ebiten.Key]string{
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ebiten.KeyBackspace: "BS",
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ebiten.KeyComma: ",",
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ebiten.KeyDelete: "Del",
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ebiten.KeyEnter: "Enter",
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ebiten.KeyEscape: "Esc",
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ebiten.KeyPeriod: ".",
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ebiten.KeySpace: "Space",
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ebiten.KeyTab: "Tab",
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// Arrows
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ebiten.KeyDown: "Down",
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ebiten.KeyLeft: "Left",
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ebiten.KeyRight: "Right",
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ebiten.KeyUp: "Up",
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// Mods
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ebiten.KeyShift: "Shift",
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ebiten.KeyControl: "Ctrl",
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ebiten.KeyAlt: "Alt",
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}
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2015-01-20 16:51:55 +01:00
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type pressedKeysParts []string
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func (p pressedKeysParts) Len() int {
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return len(p)
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}
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func (p pressedKeysParts) Dst(i int) (x0, y0, x1, y1 int) {
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k := p[i]
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r, ok := keyboard.KeyRect(k)
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if !ok {
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return 0, 0, 0, 0
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}
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return r.Min.X, r.Min.Y, r.Max.X, r.Max.Y
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}
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func (p pressedKeysParts) Src(i int) (x0, y0, x1, y1 int) {
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return p.Dst(i)
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}
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2015-01-08 15:45:30 +01:00
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func update(screen *ebiten.Image) error {
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const offsetX, offsetY = 24, 40
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op := &ebiten.DrawImageOptions{}
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op.GeoM.Translate(offsetX, offsetY)
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op.ColorM.Scale(0.5, 0.5, 0.5, 1)
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2016-08-26 16:33:36 +02:00
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if err := screen.DrawImage(keyboardImage, op); err != nil {
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return err
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}
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2015-01-20 16:51:55 +01:00
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2015-01-08 15:45:30 +01:00
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pressed := []string{}
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for i := 0; i <= 9; i++ {
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if ebiten.IsKeyPressed(ebiten.Key(i) + ebiten.Key0) {
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pressed = append(pressed, string(i+'0'))
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}
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}
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for c := 'A'; c <= 'Z'; c++ {
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if ebiten.IsKeyPressed(ebiten.Key(c) - 'A' + ebiten.KeyA) {
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pressed = append(pressed, string(c))
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}
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}
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for i := 1; i <= 12; i++ {
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if ebiten.IsKeyPressed(ebiten.Key(i) + ebiten.KeyF1 - 1) {
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pressed = append(pressed, "F"+strconv.Itoa(i))
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}
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}
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for key, name := range keyNames {
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if ebiten.IsKeyPressed(key) {
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pressed = append(pressed, name)
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}
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}
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2015-01-20 16:51:55 +01:00
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op = &ebiten.DrawImageOptions{
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ImageParts: pressedKeysParts(pressed),
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}
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op.GeoM.Translate(offsetX, offsetY)
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if err := screen.DrawImage(keyboardImage, op); err != nil {
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return err
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}
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2015-01-20 16:51:55 +01:00
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2015-01-08 15:45:30 +01:00
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return nil
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}
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func main() {
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if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Keyboard (Ebiten Demo)"); err != nil {
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log.Fatal(err)
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}
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}
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</code></pre>
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2016-05-14 14:15:27 +02:00
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<footer>© 2013 Hajime Hoshi</footer>
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