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exp/textinput: rewrite Objective-C into Go partially

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Updates #1162
This commit is contained in:
Hajime Hoshi 2024-04-04 02:47:13 +09:00
parent 13039e214e
commit 6f66386f07
2 changed files with 59 additions and 28 deletions
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85
exp/textinput/textinput_darwin.go
View File

@ -16,36 +16,11 @@
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/ebitengine/purego/objc"
"github.com/hajimehoshi/ebiten/v2/internal/ui"
)
@ -60,7 +35,7 @@ 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))
start(x, y)
session = newSession()
t.session = session
})
@ -99,3 +74,57 @@ func (t *textInput) end() {
t.session = nil
}
}
var (
selAddSubview = objc.RegisterName("addSubview:")
selAlloc = objc.RegisterName("alloc")
selContentView = objc.RegisterName("contentView")
selFrame = objc.RegisterName("frame")
selInit = objc.RegisterName("init")
selMainWindow = objc.RegisterName("mainWindow")
selMakeFirstResponder = objc.RegisterName("makeFirstResponder:")
selSetFrame = objc.RegisterName("setFrame:")
selSharedApplication = objc.RegisterName("sharedApplication")
idNSApplication = objc.ID(objc.GetClass("NSApplication"))
)
var theTextInputClient objc.ID
func getTextInputClient() objc.ID {
if theTextInputClient == 0 {
class := objc.ID(objc.GetClass("TextInputClient"))
theTextInputClient = class.Send(selAlloc).Send(selInit)
}
return theTextInputClient
}
type nsPoint struct {
x float64
y float64
}
type nsSize struct {
width float64
height float64
}
type nsRect struct {
origin nsPoint
size nsSize
}
func start(x, y int) {
t := getTextInputClient()
window := idNSApplication.Send(selSharedApplication).Send(selMainWindow)
contentView := window.Send(selContentView)
contentView.Send(selAddSubview, t)
window.Send(selMakeFirstResponder, t)
r := objc.Send[nsRect](contentView, selFrame)
y = int(r.size.height) - y - 4
t.Send(selSetFrame, nsRect{
origin: nsPoint{float64(x), float64(y)},
size: nsSize{1, 1},
})
}

2
exp/textinput/textinput_darwin.m
View File

@ -14,6 +14,8 @@
//go:build !ios
// TODO: Remove Cgo with PureGo (#1162).
#import <Cocoa/Cocoa.h>
void ebitengine_textinput_update(const char* text, int start, int end, BOOL committed);