ebiten/exp/textinput/textinput_darwin.go
2024-03-02 17:17:27 +09:00

102 lines
2.7 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.
//go:build !ios
package textinput
// TODO: Remove Cgo after ebitengine/purego#143 is resolved.
// #cgo CFLAGS: -x objective-c
// #cgo LDFLAGS: -framework Cocoa
//
// #import <Cocoa/Cocoa.h>
//
// @interface TextInputClient : NSView<NSTextInputClient>
// @end
//
// static TextInputClient* getTextInputClient() {
// static TextInputClient* textInputClient;
// if (!textInputClient) {
// textInputClient = [[TextInputClient alloc] init];
// }
// return textInputClient;
// }
//
// static void start(int x, int y) {
// TextInputClient* textInputClient = getTextInputClient();
// NSWindow* window = [[NSApplication sharedApplication] mainWindow];
// [[window contentView] addSubview: textInputClient];
// [window makeFirstResponder: textInputClient];
//
// y = [[window contentView] frame].size.height - y - 4;
// [textInputClient setFrame:NSMakeRect(x, y, 1, 1)];
// }
import "C"
import (
"github.com/hajimehoshi/ebiten/v2/internal/ui"
)
type textInput struct {
// session must be accessed from the main thread.
session *session
}
var theTextInput textInput
func (t *textInput) Start(x, y int) (chan State, func()) {
var session *session
ui.Get().RunOnMainThread(func() {
t.end()
C.start(C.int(x), C.int(y))
session = newSession()
t.session = session
})
return session.ch, session.end
}
//export ebitengine_textinput_update
func ebitengine_textinput_update(text *C.char, start, end C.int, committed C.int) {
theTextInput.update(C.GoString(text), int(start), int(end), committed != 0)
}
func (t *textInput) update(text string, start, end int, committed bool) {
if t.session != nil {
startInBytes := convertUTF16CountToByteCount(text, start)
endInBytes := convertUTF16CountToByteCount(text, end)
t.session.trySend(State{
Text: text,
CompositionSelectionStartInBytes: startInBytes,
CompositionSelectionEndInBytes: endInBytes,
Committed: committed,
})
}
if committed {
t.end()
}
}
//export ebitengine_textinput_end
func ebitengine_textinput_end() {
theTextInput.end()
}
func (t *textInput) end() {
if t.session != nil {
t.session.end()
t.session = nil
}
}