ebiten/genkeys.go
2017-11-10 00:35:46 +09:00

366 lines
7.8 KiB
Go

// Copyright 2015 Hajime Hoshi
//
// 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.
// +build ignore
// Note:
// * Respect GLFW key names
// * https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent.keyCode
// * It is best to replace keyCode with code, but many browsers don't implement it.
package main
import (
"log"
"os"
"sort"
"strconv"
"text/template"
"github.com/hajimehoshi/ebiten/internal"
)
var (
nameToCodes map[string][]string
keyCodeToNameEdge map[int]string
)
func init() {
nameToCodes = map[string][]string{
"Comma": {"Comma"},
"Period": {"Period"},
"Alt": {"AltLeft", "AltRight"},
"CapsLock": {"CapsLock"},
"Control": {"ControlLeft", "ControlRight"},
"Shift": {"ShiftLeft", "ShiftRight"},
"Enter": {"Enter"},
"Space": {"Space"},
"Tab": {"Tab"},
"Delete": {"Delete"},
"End": {"End"},
"Home": {"Home"},
"Insert": {"Insert"},
"PageDown": {"PageDown"},
"PageUp": {"PageUp"},
"Down": {"ArrowDown"},
"Left": {"ArrowLeft"},
"Right": {"ArrowRight"},
"Up": {"ArrowUp"},
"Escape": {"Escape"},
"Backspace": {"Backspace"},
"Apostrophe": {"Quote"},
"Minus": {"Minus"},
"Slash": {"Slash"},
"Semicolon": {"Semicolon"},
"Equal": {"Equal"},
"LeftBracket": {"BracketLeft"},
"Backslash": {"Backslash"},
"RightBracket": {"BracketRight"},
"GraveAccent": {"Backquote"},
}
// ASCII: 0 - 9
for c := '0'; c <= '9'; c++ {
nameToCodes[string(c)] = []string{"Digit" + string(c)}
}
// ASCII: A - Z
for c := 'A'; c <= 'Z'; c++ {
nameToCodes[string(c)] = []string{"Key" + string(c)}
}
// Function keys
for i := 1; i <= 12; i++ {
nameToCodes["F"+strconv.Itoa(i)] = []string{"F" + strconv.Itoa(i)}
}
}
func init() {
keyCodeToNameEdge = map[int]string{
0xbc: "Comma",
0xbe: "Period",
0x12: "Alt",
0x14: "CapsLock",
0x11: "Control",
0x10: "Shift",
0x0D: "Enter",
0x20: "Space",
0x09: "Tab",
0x2E: "Delete",
0x23: "End",
0x24: "Home",
0x2D: "Insert",
0x22: "PageDown",
0x21: "PageUp",
0x28: "Down",
0x25: "Left",
0x27: "Right",
0x26: "Up",
0x1B: "Escape",
0xde: "Apostrophe",
0xbd: "Minus",
0xbf: "Slash",
0xba: "Semicolon",
0xbb: "Equal",
0xdb: "LeftBracket",
0xdc: "Backslash",
0xdd: "RightBracket",
0xc0: "GraveAccent",
0x08: "Backspace",
}
// ASCII: 0 - 9
for c := '0'; c <= '9'; c++ {
keyCodeToNameEdge[int(c)] = string(c)
}
// ASCII: A - Z
for c := 'A'; c <= 'Z'; c++ {
keyCodeToNameEdge[int(c)] = string(c)
}
// Function keys
for i := 1; i <= 12; i++ {
keyCodeToNameEdge[0x70+i-1] = "F" + strconv.Itoa(i)
}
}
const ebitenKeysTmpl = `{{.License}}
// {{.Notice}}
package ebiten
import (
"github.com/hajimehoshi/ebiten/internal/ui"
)
// A Key represents a keyboard key.
// These keys represent pysical keys of US keyboard.
// For example, KeyQ represents Q key on US keyboards and ' (quote) key on Dvorak keyboards.
type Key int
// Keys
const (
{{range $index, $name := .KeyNames}}Key{{$name}} Key = Key(ui.Key{{$name}})
{{end}} KeyMax Key = Key{{.LastKeyName}}
)
`
const uiKeysTmpl = `{{.License}}
// {{.Notice}}
package ui
type Key int
const (
{{range $index, $name := .KeyNames}}Key{{$name}}{{if eq $index 0}} Key = iota{{end}}
{{end}}
)
`
const uiKeysGlfwTmpl = `{{.License}}
// {{.Notice}}
{{.BuildTag}}
package ui
import (
glfw "github.com/go-gl/glfw/v3.2/glfw"
)
var glfwKeyCodeToKey = map[glfw.Key]Key{
{{range $index, $name := .KeyNamesWithoutMods}}glfw.Key{{$name}}: Key{{$name}},
{{end}}
glfw.KeyLeftAlt: KeyAlt,
glfw.KeyRightAlt: KeyAlt,
glfw.KeyLeftControl: KeyControl,
glfw.KeyRightControl: KeyControl,
glfw.KeyLeftShift: KeyShift,
glfw.KeyRightShift: KeyShift,
}
`
const uiKeysJSTmpl = `{{.License}}
// {{.Notice}}
{{.BuildTag}}
package ui
var keyToCodes = map[Key][]string{
{{range $name, $codes := .NameToCodes}}Key{{$name}}: []string{
{{range $code := $codes}}"{{$code}}",{{end}}
},
{{end}}
}
var keyCodeToKeyEdge = map[int]Key{
{{range $code, $name := .KeyCodeToNameEdge}}{{$code}}: Key{{$name}},
{{end}}
}
`
type KeyNames []string
func (k KeyNames) digit(name string) int {
if len(name) != 1 {
return -1
}
c := name[0]
if c < '0' || '9' < c {
return -1
}
return int(c - '0')
}
func (k KeyNames) alphabet(name string) rune {
if len(name) != 1 {
return -1
}
c := rune(name[0])
if c < 'A' || 'Z' < c {
return -1
}
return c
}
func (k KeyNames) function(name string) int {
if len(name) < 2 {
return -1
}
if name[0] != 'F' {
return -1
}
i, err := strconv.Atoi(name[1:])
if err != nil {
return -1
}
return i
}
func (k KeyNames) Len() int {
return len(k)
}
func (k KeyNames) Less(i, j int) bool {
k0, k1 := k[i], k[j]
d0, d1 := k.digit(k0), k.digit(k1)
a0, a1 := k.alphabet(k0), k.alphabet(k1)
f0, f1 := k.function(k0), k.function(k1)
if d0 != -1 {
if d1 != -1 {
return d0 < d1
}
return true
}
if a0 != -1 {
if d1 != -1 {
return false
}
if a1 != -1 {
return a0 < a1
}
return true
}
if d1 != -1 {
return false
}
if a1 != -1 {
return false
}
if f0 != -1 && f1 != -1 {
return f0 < f1
}
return k0 < k1
}
func (k KeyNames) Swap(i, j int) {
k[i], k[j] = k[j], k[i]
}
func main() {
license, err := internal.LicenseComment()
if err != nil {
log.Fatal(err)
}
notice := "DO NOT EDIT: This file is auto-generated by genkeys.go."
namesSet := map[string]struct{}{}
namesWithoutModsSet := map[string]struct{}{}
codes := []string{}
for name, cs := range nameToCodes {
namesSet[name] = struct{}{}
codes = append(codes, cs...)
if name != "Alt" && name != "Control" && name != "Shift" {
namesWithoutModsSet[name] = struct{}{}
}
}
names := []string{}
namesWithoutMods := []string{}
for n := range namesSet {
names = append(names, n)
}
for n := range namesWithoutModsSet {
namesWithoutMods = append(namesWithoutMods, n)
}
sort.Sort(KeyNames(names))
sort.Sort(KeyNames(namesWithoutMods))
sort.Strings(codes)
for path, tmpl := range map[string]string{
"keys.go": ebitenKeysTmpl,
"internal/ui/keys.go": uiKeysTmpl,
"internal/ui/keys_glfw.go": uiKeysGlfwTmpl,
"internal/ui/keys_js.go": uiKeysJSTmpl,
} {
f, err := os.Create(path)
if err != nil {
log.Fatal(err)
}
defer f.Close()
tmpl, err := template.New(path).Parse(tmpl)
if err != nil {
log.Fatal(err)
}
// The build tag can't be included in the templates because of `go vet`.
// Pass the build tag and extract this in the template to make `go vet` happy.
buildTag := ""
switch path {
case "internal/ui/keys_glfw.go":
buildTag = "// +build darwin freebsd linux windows" +
"\n// +build !js" +
"\n// +build !android" +
"\n// +build !ios"
case "internal/ui/keys_js.go":
buildTag = "// +build js"
}
// NOTE: According to godoc, maps are automatically sorted by key.
if err := tmpl.Execute(f, map[string]interface{}{
"License": license,
"Notice": notice,
"BuildTag": buildTag,
"NameToCodes": nameToCodes,
"KeyCodeToNameEdge": keyCodeToNameEdge,
"Codes": codes,
"KeyNames": names,
"LastKeyName": names[len(names)-1],
"KeyNamesWithoutMods": namesWithoutMods,
}); err != nil {
log.Fatal(err)
}
}
}