Allow request emoji and symbols popup on macOS (#123)

samples/SkijaInjectSample/src/main/kotlin/SkijaInjectSample/App.kt

@@ -36,8 +36,8 @@ fun createWindow(title: String, exitOnClose: Boolean) = runBlocking(Dispatchers.
 
     // Create menu.
     val menuBar = JMenuBar()
-    val menu = JMenu("File")
-    menuBar.add(menu)
+    val fileMenu = JMenu("File")
+    menuBar.add(fileMenu)
 
     val miFullscreenState = JMenuItem("Is fullscreen mode")
     val ctrlI = KeyStroke.getKeyStroke(KeyEvent.VK_I, Toolkit.getDefaultToolkit().getMenuShortcutKeyMaskEx())
@@ -73,9 +73,23 @@ fun createWindow(title: String, exitOnClose: Boolean) = runBlocking(Dispatchers.
         }
     })
 
-    menu.add(miToggleFullscreen)
-    menu.add(miFullscreenState)
-    menu.add(miTakeScreenshot)
+    fileMenu.add(miToggleFullscreen)
+    fileMenu.add(miFullscreenState)
+    fileMenu.add(miTakeScreenshot)
+
+    val editMenu = JMenu("Edit")
+    menuBar.add(editMenu)
+
+    val miEmojiAndSymbols = JMenuItem("Emoji & Symbols")
+    miEmojiAndSymbols.setAccelerator(KeyStroke.getKeyStroke("ctrl meta SPACE"))
+    miEmojiAndSymbols.addActionListener(object : ActionListener {
+        override fun actionPerformed(actionEvent: ActionEvent?) {
+            orderEmojiAndSymbolsPopup()
+        }
+    })
+
+    editMenu.add(miEmojiAndSymbols)
+
 
     window.setJMenuBar(menuBar)
 

skiko/src/jvmMain/kotlin/org/jetbrains/skiko/PlatformOperations.kt

@@ -15,6 +15,7 @@ internal interface PlatformOperations {
     fun isFullscreen(component: Component): Boolean
     fun setFullscreen(component: Component, value: Boolean)
     fun disableTitleBar(platformInfo: Long)
+    fun orderEmojiAndSymbolsPopup()
     fun getDpiScale(component: Component): Float
     fun createRedrawer(layer: SkiaLayer, renderApi: GraphicsApi, properties: SkiaLayerProperties): Redrawer
 }
@@ -38,6 +39,10 @@ internal val platformOperations: PlatformOperations by lazy {
                     osxDisableTitleBar(platformInfo)
                 }
 
+                override fun orderEmojiAndSymbolsPopup() {
+                    osxOrderEmojiAndSymbolsPopup()
+                }
+
                 override fun createRedrawer(
                     layer: SkiaLayer,
                     renderApi: GraphicsApi,
@@ -65,6 +70,9 @@ internal val platformOperations: PlatformOperations by lazy {
                 override fun disableTitleBar(platformInfo: Long) {
                 }
 
+                override fun orderEmojiAndSymbolsPopup() {
+                }
+
                 override fun getDpiScale(component: Component): Float {
                     return component.graphicsConfiguration.defaultTransform.scaleX.toFloat()
                 }
@@ -97,6 +105,9 @@ internal val platformOperations: PlatformOperations by lazy {
                 override fun disableTitleBar(platformInfo: Long) {
                 }
 
+                override fun orderEmojiAndSymbolsPopup() {
+                }
+
                 override fun getDpiScale(component: Component): Float {
                     return component.graphicsConfiguration.defaultTransform.scaleX.toFloat()
                     // TODO doesn't work well because java doesn't scale windows (content has offset with 200% scale)
@@ -130,6 +141,7 @@ internal val platformOperations: PlatformOperations by lazy {
 external private fun osxIsFullscreenNative(component: Component): Boolean
 external private fun osxSetFullscreenNative(component: Component, value: Boolean)
 external private fun osxDisableTitleBar(platformInfo: Long)
+external private fun osxOrderEmojiAndSymbolsPopup()
 
 // Linux
 external private fun linuxGetDpiScaleNative(platformInfo: Long): Float

skiko/src/jvmMain/kotlin/org/jetbrains/skiko/SkiaWindow.kt

@@ -23,3 +23,7 @@ open class SkiaWindow(
         }
     }
 }
+
+fun orderEmojiAndSymbolsPopup() {
+    platformOperations.orderEmojiAndSymbolsPopup()
+}
\ No newline at end of file

skiko/src/jvmMain/objectiveC/macos/InputMethod.mm

+#import "jni.h"
+#import <Cocoa/Cocoa.h>
+
+extern "C"
+{
+
+JNIEXPORT void Java_org_jetbrains_skiko_PlatformOperationsKt_osxOrderEmojiAndSymbolsPopup() {
+    dispatch_async(dispatch_get_main_queue(), ^{
+        NSApplication* app = [NSApplication sharedApplication];
+        [app orderFrontCharacterPalette:nil];
+    });
+}
+
+} // extern C
\ No newline at end of file