mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-27 04:08:53 +01:00
133 lines
3.3 KiB
Go
133 lines
3.3 KiB
Go
// Copyright 2023 The Ebitengine 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 !ios
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package textinput
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// #cgo CFLAGS: -x objective-c
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// #cgo LDFLAGS: -framework Cocoa
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import "C"
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import (
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"github.com/ebitengine/purego/objc"
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"github.com/hajimehoshi/ebiten/v2/internal/ui"
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)
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type textInput struct {
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// session must be accessed from the main thread.
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session *session
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}
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var theTextInput textInput
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func (t *textInput) Start(x, y int) (chan State, func()) {
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var session *session
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ui.Get().RunOnMainThread(func() {
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t.end()
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start(x, y)
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session = newSession()
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t.session = session
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})
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return session.ch, session.end
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}
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//export ebitengine_textinput_update
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func ebitengine_textinput_update(text *C.char, start, end C.int, committed C.int) {
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theTextInput.update(C.GoString(text), int(start), int(end), committed != 0)
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}
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func (t *textInput) update(text string, start, end int, committed bool) {
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if t.session != nil {
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startInBytes := convertUTF16CountToByteCount(text, start)
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endInBytes := convertUTF16CountToByteCount(text, end)
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t.session.trySend(State{
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Text: text,
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CompositionSelectionStartInBytes: startInBytes,
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CompositionSelectionEndInBytes: endInBytes,
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Committed: committed,
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})
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}
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if committed {
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t.end()
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}
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}
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//export ebitengine_textinput_end
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func ebitengine_textinput_end() {
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theTextInput.end()
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}
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func (t *textInput) end() {
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if t.session != nil {
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t.session.end()
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t.session = nil
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}
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}
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var (
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selAddSubview = objc.RegisterName("addSubview:")
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selAlloc = objc.RegisterName("alloc")
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selContentView = objc.RegisterName("contentView")
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selFrame = objc.RegisterName("frame")
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selInit = objc.RegisterName("init")
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selMainWindow = objc.RegisterName("mainWindow")
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selMakeFirstResponder = objc.RegisterName("makeFirstResponder:")
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selSetFrame = objc.RegisterName("setFrame:")
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selSharedApplication = objc.RegisterName("sharedApplication")
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idNSApplication = objc.ID(objc.GetClass("NSApplication"))
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)
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var theTextInputClient objc.ID
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func getTextInputClient() objc.ID {
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if theTextInputClient == 0 {
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class := objc.ID(objc.GetClass("TextInputClient"))
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theTextInputClient = class.Send(selAlloc).Send(selInit)
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}
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return theTextInputClient
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}
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type nsPoint struct {
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x float64
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y float64
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}
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type nsSize struct {
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width float64
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height float64
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}
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type nsRect struct {
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origin nsPoint
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size nsSize
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}
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func start(x, y int) {
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t := getTextInputClient()
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window := idNSApplication.Send(selSharedApplication).Send(selMainWindow)
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contentView := window.Send(selContentView)
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contentView.Send(selAddSubview, t)
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window.Send(selMakeFirstResponder, t)
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r := objc.Send[nsRect](contentView, selFrame)
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y = int(r.size.height) - y - 4
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t.Send(selSetFrame, nsRect{
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origin: nsPoint{float64(x), float64(y)},
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size: nsSize{1, 1},
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})
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}
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