Add decoration parameter to Window and DialogWindow to control the thickness of the undecorated window resizers.

compose/ui/ui/api/desktop/ui.api

@@ -442,6 +442,7 @@ public final class androidx/compose/ui/awt/ComposeDialog : javax/swing/JDialog {
 	public final fun getCompositionLocalContext ()Landroidx/compose/runtime/CompositionLocalContext;
 	public final fun getExceptionHandler ()Landroidx/compose/ui/window/WindowExceptionHandler;
 	public final fun getRenderApi ()Lorg/jetbrains/skiko/GraphicsApi;
+	public final fun getUndecoratedResizerThickness-D9Ej5fM ()F
 	public final fun getWindowHandle ()J
 	public final fun isTransparent ()Z
 	public final fun onRenderApiChanged (Lkotlin/jvm/functions/Function0;)V
@@ -459,6 +460,7 @@ public final class androidx/compose/ui/awt/ComposeDialog : javax/swing/JDialog {
 	public fun setResizable (Z)V
 	public final fun setTransparent (Z)V
 	public fun setUndecorated (Z)V
+	public final fun setUndecoratedResizerThickness-0680j_4 (F)V
 }
 
 public final class androidx/compose/ui/awt/ComposePanel : javax/swing/JLayeredPane {
@@ -514,6 +516,7 @@ public final class androidx/compose/ui/awt/ComposeWindow : javax/swing/JFrame {
 	public final fun getExceptionHandler ()Landroidx/compose/ui/window/WindowExceptionHandler;
 	public final fun getPlacement ()Landroidx/compose/ui/window/WindowPlacement;
 	public final fun getRenderApi ()Lorg/jetbrains/skiko/GraphicsApi;
+	public final fun getUndecoratedResizerThickness-D9Ej5fM ()F
 	public final fun getWindowHandle ()J
 	public final fun isMinimized ()Z
 	public final fun isTransparent ()Z
@@ -534,6 +537,7 @@ public final class androidx/compose/ui/awt/ComposeWindow : javax/swing/JFrame {
 	public fun setResizable (Z)V
 	public final fun setTransparent (Z)V
 	public fun setUndecorated (Z)V
+	public final fun setUndecoratedResizerThickness-0680j_4 (F)V
 }
 
 public final class androidx/compose/ui/awt/RenderSettings {
@@ -4137,7 +4141,8 @@ public abstract interface class androidx/compose/ui/window/DialogWindowScope : a
 public final class androidx/compose/ui/window/Dialog_desktopKt {
 	public static final fun Dialog (Lkotlin/jvm/functions/Function0;Landroidx/compose/ui/window/DialogState;ZLjava/lang/String;Landroidx/compose/ui/graphics/painter/Painter;ZZZZZLkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function3;Landroidx/compose/runtime/Composer;III)V
 	public static final fun Dialog (ZLkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function0;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function3;Landroidx/compose/runtime/Composer;II)V
-	public static final synthetic fun DialogWindow (Lkotlin/jvm/functions/Function0;Landroidx/compose/ui/window/DialogState;ZLjava/lang/String;Landroidx/compose/ui/graphics/painter/Painter;ZZZZZLkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function3;Landroidx/compose/runtime/Composer;III)V
+	public static final fun DialogWindow (Lkotlin/jvm/functions/Function0;Landroidx/compose/ui/window/DialogState;ZLjava/lang/String;Landroidx/compose/ui/graphics/painter/Painter;Landroidx/compose/ui/window/WindowDecoration;ZZZZZLkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function3;Landroidx/compose/runtime/Composer;III)V
+	public static final fun DialogWindow (Lkotlin/jvm/functions/Function0;Landroidx/compose/ui/window/DialogState;ZLjava/lang/String;Landroidx/compose/ui/graphics/painter/Painter;ZZZZZLkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function3;Landroidx/compose/runtime/Composer;III)V
 	public static final fun DialogWindow (Lkotlin/jvm/functions/Function0;Landroidx/compose/ui/window/DialogState;ZLjava/lang/String;Landroidx/compose/ui/graphics/painter/Painter;ZZZZZZLkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function3;Landroidx/compose/runtime/Composer;III)V
 	public static final fun DialogWindow (ZLkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function0;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function3;Landroidx/compose/runtime/Composer;II)V
 }
@@ -4254,6 +4259,29 @@ public final class androidx/compose/ui/window/Tray_desktopKt {
 	public static final fun rememberTrayState (Landroidx/compose/runtime/Composer;I)Landroidx/compose/ui/window/TrayState;
 }
 
+public abstract interface class androidx/compose/ui/window/WindowDecoration {
+	public static final field Companion Landroidx/compose/ui/window/WindowDecoration$Companion;
+}
+
+public final class androidx/compose/ui/window/WindowDecoration$Companion {
+	public final fun Undecorated-0680j_4 (F)Landroidx/compose/ui/window/WindowDecoration;
+	public static synthetic fun Undecorated-0680j_4$default (Landroidx/compose/ui/window/WindowDecoration$Companion;FILjava/lang/Object;)Landroidx/compose/ui/window/WindowDecoration;
+}
+
+public final class androidx/compose/ui/window/WindowDecoration$SystemDefault : androidx/compose/ui/window/WindowDecoration {
+	public static final field $stable I
+	public static final field INSTANCE Landroidx/compose/ui/window/WindowDecoration$SystemDefault;
+	public fun equals (Ljava/lang/Object;)Z
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final class androidx/compose/ui/window/WindowDecorationDefaults {
+	public static final field $stable I
+	public static final field INSTANCE Landroidx/compose/ui/window/WindowDecorationDefaults;
+	public final fun getResizerThickness-D9Ej5fM ()F
+}
+
 public abstract interface class androidx/compose/ui/window/WindowExceptionHandler {
 	public abstract fun onException (Ljava/lang/Throwable;)V
 }
@@ -4377,9 +4405,12 @@ public final class androidx/compose/ui/window/WindowState_desktopKt {
 
 public final class androidx/compose/ui/window/Window_desktopKt {
 	public static final fun MenuBar (Landroidx/compose/ui/window/FrameWindowScope;Lkotlin/jvm/functions/Function3;Landroidx/compose/runtime/Composer;I)V
+	public static final fun Window (Lkotlin/jvm/functions/Function0;Landroidx/compose/ui/window/WindowState;ZLjava/lang/String;Landroidx/compose/ui/graphics/painter/Painter;Landroidx/compose/ui/window/WindowDecoration;ZZZZZLkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function3;Landroidx/compose/runtime/Composer;III)V
 	public static final fun Window (Lkotlin/jvm/functions/Function0;Landroidx/compose/ui/window/WindowState;ZLjava/lang/String;Landroidx/compose/ui/graphics/painter/Painter;ZZZZZZLkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function3;Landroidx/compose/runtime/Composer;III)V
 	public static final fun Window (ZLkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function0;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function3;Landroidx/compose/runtime/Composer;II)V
+	public static final fun singleWindowApplication (Landroidx/compose/ui/window/WindowState;ZLjava/lang/String;Landroidx/compose/ui/graphics/painter/Painter;Landroidx/compose/ui/window/WindowDecoration;ZZZZZLkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function1;ZLkotlin/jvm/functions/Function3;)V
 	public static final fun singleWindowApplication (Landroidx/compose/ui/window/WindowState;ZLjava/lang/String;Landroidx/compose/ui/graphics/painter/Painter;ZZZZZZLkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function1;ZLkotlin/jvm/functions/Function3;)V
+	public static synthetic fun singleWindowApplication$default (Landroidx/compose/ui/window/WindowState;ZLjava/lang/String;Landroidx/compose/ui/graphics/painter/Painter;Landroidx/compose/ui/window/WindowDecoration;ZZZZZLkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function1;ZLkotlin/jvm/functions/Function3;ILjava/lang/Object;)V
 	public static synthetic fun singleWindowApplication$default (Landroidx/compose/ui/window/WindowState;ZLjava/lang/String;Landroidx/compose/ui/graphics/painter/Painter;ZZZZZZLkotlin/jvm/functions/Function1;Lkotlin/jvm/functions/Function1;ZLkotlin/jvm/functions/Function3;ILjava/lang/Object;)V
 }
 

compose/ui/ui/src/commonMain/kotlin/androidx/compose/ui/input/pointer/PointerIcon.kt

@@ -16,7 +16,6 @@
 
 package androidx.compose.ui.input.pointer
 
-import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.Stable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.input.pointer.PointerEventPass.Main
@@ -78,7 +77,7 @@ internal interface PointerIconService {
  * @param icon The icon to set
  * @param overrideDescendants when false (by default) descendants are able to set their own pointer
  * icon. If true, no descendants under this parent are eligible to change the icon (it will be set
- * to the this [the parent's] icon).
+ * to this [the parent's] icon).
  */
 @Stable
 fun Modifier.pointerHoverIcon(icon: PointerIcon, overrideDescendants: Boolean = false) =

compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/awt/ComposeDialog.desktop.kt

@@ -23,6 +23,7 @@ import androidx.compose.ui.input.key.KeyEvent
 import androidx.compose.ui.layout.layoutId
 import androidx.compose.ui.semantics.dialog
 import androidx.compose.ui.semantics.semantics
+import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.window.DialogWindowScope
 import androidx.compose.ui.window.UndecoratedWindowResizer
 import androidx.compose.ui.window.WindowExceptionHandler
@@ -220,6 +221,11 @@ class ComposeDialog : JDialog {
         }
     }
 
+    /**
+     * The thickness of the resizers used when the dialog is undecorated and resizable.
+     */
+    var undecoratedResizerThickness: Dp by undecoratedWindowResizer::resizerThickness
+
     override fun dispose() {
         composePanel.dispose()
         super.dispose()

compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/awt/ComposeWindow.desktop.kt

@@ -21,6 +21,7 @@ import androidx.compose.ui.ExperimentalComposeUiApi
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.input.key.KeyEvent
 import androidx.compose.ui.layout.layoutId
+import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.window.FrameWindowScope
 import androidx.compose.ui.window.UndecoratedWindowResizer
 import androidx.compose.ui.window.WindowExceptionHandler
@@ -160,6 +161,11 @@ class ComposeWindow @ExperimentalComposeUiApi constructor(
         }
     }
 
+    /**
+     * The thickness of the resizers used when the window is undecorated and resizable.
+     */
+    var undecoratedResizerThickness: Dp by undecoratedWindowResizer::resizerThickness
+
     override fun dispose() {
         composePanel.dispose()
         super.dispose()

compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/window/Dialog.desktop.kt

@@ -66,25 +66,43 @@ fun Dialog(
     onKeyEvent: ((KeyEvent) -> Boolean) = { false },
     content: @Composable DialogWindowScope.() -> Unit
 ) = DialogWindow(
-    onCloseRequest,
-    state,
-    visible,
-    title,
-    icon,
-    undecorated,
-    transparent,
-    resizable,
-    enabled,
-    focusable,
+    onCloseRequest = onCloseRequest,
+    state = state,
+    visible = visible,
+    title = title,
+    icon = icon,
+    decoration = windowDecorationFromFlag(undecorated),
+    transparent = transparent,
+    resizable = resizable,
+    enabled = enabled,
+    focusable = focusable,
     alwaysOnTop = false,
-    onPreviewKeyEvent,
-    onKeyEvent,
-    content
+    onPreviewKeyEvent = onPreviewKeyEvent,
+    onKeyEvent = onKeyEvent,
+    content = content
 )
 
 @Deprecated(
-    level = DeprecationLevel.HIDDEN,
-    message = "Replaced by an overload that also takes alwaysOnTop",
+    level = DeprecationLevel.WARNING,
+    message = "Replaced by an overload that takes a decoration argument",
+    replaceWith = ReplaceWith("DialogWindow(" +
+        "onCloseRequest," +
+        "state," +
+        "visible," +
+        "title," +
+        "icon," +
+        "if (undecorated) WindowDecoration.Undecorated() else WindowDecoration.SystemDefault," +
+        "transparent," +
+        "resizable," +
+        "enabled," +
+        "focusable," +
+        "alwaysOnTop," +
+        "onPreviewKeyEvent," +
+        "onKeyEvent," +
+        "content" +
+        ")",
+        "androidx.compose.ui.window.WindowDecoration"
+    )
 )
 @Composable
 fun DialogWindow(
@@ -93,7 +111,7 @@ fun DialogWindow(
     visible: Boolean = true,
     title: String = "Untitled",
     icon: Painter? = null,
-    undecorated: Boolean = false,
+    undecorated: Boolean,
     transparent: Boolean = false,
     resizable: Boolean = true,
     enabled: Boolean = true,
@@ -103,20 +121,20 @@ fun DialogWindow(
     content: @Composable DialogWindowScope.() -> Unit
 ) {
     DialogWindow(
-        onCloseRequest,
-        state,
-        visible,
-        title,
-        icon,
-        undecorated,
-        transparent,
-        resizable,
-        enabled,
-        focusable,
+        onCloseRequest = onCloseRequest,
+        state = state,
+        visible = visible,
+        title = title,
+        icon = icon,
+        decoration = windowDecorationFromFlag(undecorated),
+        transparent = transparent,
+        resizable = resizable,
+        enabled = enabled,
+        focusable = focusable,
         alwaysOnTop = false,
-        onPreviewKeyEvent,
-        onKeyEvent,
-        content
+        onPreviewKeyEvent = onPreviewKeyEvent,
+        onKeyEvent = onKeyEvent,
+        content = content
     )
 }
 
@@ -178,14 +196,129 @@ fun DialogWindow(
  * If you return false, the key event will be sent to this [onKeyEvent]'s parent.
  * @param content content of the dialog
  */
+@Deprecated(
+    level = DeprecationLevel.WARNING,
+    message = "Replaced by an overload that takes a decoration argument",
+    replaceWith = ReplaceWith("DialogWindow(" +
+        "onCloseRequest," +
+        "state," +
+        "visible," +
+        "title," +
+        "icon," +
+        "if (undecorated) WindowDecoration.Undecorated() else WindowDecoration.SystemDefault," +
+        "transparent," +
+        "resizable," +
+        "enabled," +
+        "focusable," +
+        "alwaysOnTop," +
+        "onPreviewKeyEvent," +
+        "onKeyEvent," +
+        "content" +
+        ")",
+        "androidx.compose.ui.window.WindowDecoration"
+    )
+)
 @Composable
 fun DialogWindow(
     onCloseRequest: () -> Unit,
     state: DialogState = rememberDialogState(),
     visible: Boolean = true,
     title: String = "Untitled",
     icon: Painter? = null,
-    undecorated: Boolean = false,
+    undecorated: Boolean,
+    transparent: Boolean = false,
+    resizable: Boolean = true,
+    enabled: Boolean = true,
+    focusable: Boolean = true,
+    alwaysOnTop: Boolean = false,
+    onPreviewKeyEvent: ((KeyEvent) -> Boolean) = { false },
+    onKeyEvent: ((KeyEvent) -> Boolean) = { false },
+    content: @Composable DialogWindowScope.() -> Unit
+) {
+    DialogWindow(
+        onCloseRequest = onCloseRequest,
+        state = state,
+        visible = visible,
+        title = title,
+        icon = icon,
+        decoration = windowDecorationFromFlag(undecorated),
+        transparent = transparent,
+        resizable = resizable,
+        enabled = enabled,
+        focusable = focusable,
+        alwaysOnTop = alwaysOnTop,
+        onPreviewKeyEvent = onPreviewKeyEvent,
+        onKeyEvent = onKeyEvent,
+        content = content,
+    )
+}
+
+/**
+ * Composes platform dialog in the current composition. When Dialog enters the composition,
+ * a new platform dialog will be created and receives the focus. When Dialog leaves the
+ * composition, dialog will be disposed and closed.
+ *
+ * Dialog is a modal window. It means it blocks the parent [Window] / [DialogWindow] in which composition
+ * context it was created.
+ *
+ * Usage:
+ * ```
+ * @Composable
+ * fun main() = application {
+ *     var isDialogOpen by remember { mutableStateOf(true) }
+ *     if (isDialogOpen) {
+ *         Dialog(onCloseRequest = { isDialogOpen = false }) {}
+ *     }
+ * }
+ * ```
+ * @param onCloseRequest Callback that will be called when the user closes the dialog.
+ * Usually in this callback we need to manually tell Compose what to do:
+ * - change `isOpen` state of the dialog (which is manually defined)
+ * - close the whole application (`onCloseRequest = ::exitApplication` in [ApplicationScope])
+ * - don't close the dialog on close request (`onCloseRequest = {}`)
+ * @param state The state object to be used to control or observe the dialog's state
+ * When size/position is changed by the user, state will be updated.
+ * When size/position of the dialog is changed by the application (changing state),
+ * the native dialog will update its corresponding properties.
+ * If [DialogState.position] is not [WindowPosition.isSpecified], then after the first show on the
+ * screen [DialogState.position] will be set to the absolute values.
+ * @param visible Is [DialogWindow] visible to user.
+ * If `false`:
+ * - internal state of [DialogWindow] is preserved and will be restored next time the dialog
+ * will be visible;
+ * - native resources will not be released. They will be released only when [DialogWindow]
+ * will leave the composition.
+ * @param title Title in the titlebar of the dialog
+ * @param icon Icon in the titlebar of the window (for platforms which support this).
+ * On macOs individual windows can't have a separate icon. To change the icon in the Dock,
+ * set it via `iconFile` in build.gradle
+ * (https://github.com/JetBrains/compose-jb/tree/master/tutorials/Native_distributions_and_local_execution#platform-specific-options)
+ * @param decoration Specifies the decoration for this dialog.
+ * @param transparent Disables or enables window transparency. Transparency should be set
+ * only if window is undecorated, otherwise an exception will be thrown.
+ * @param resizable Can dialog be resized by the user (application still can resize the dialog
+ * changing [state])
+ * @param enabled Can dialog react to input events
+ * @param focusable Can dialog receive focus
+ * @param alwaysOnTop Should the dialog always be on top of another windows and dialogs
+ * @param onPreviewKeyEvent This callback is invoked when the user interacts with the hardware
+ * keyboard. It gives ancestors of a focused component the chance to intercept a [KeyEvent].
+ * Return true to stop propagation of this event. If you return false, the key event will be
+ * sent to this [onPreviewKeyEvent]'s child. If none of the children consume the event,
+ * it will be sent back up to the root using the onKeyEvent callback.
+ * @param onKeyEvent This callback is invoked when the user interacts with the hardware
+ * keyboard. While implementing this callback, return true to stop propagation of this event.
+ * If you return false, the key event will be sent to this [onKeyEvent]'s parent.
+ * @param content content of the dialog
+ */
+@Composable
+fun DialogWindow(
+    onCloseRequest: () -> Unit,
+    state: DialogState = rememberDialogState(),
+    visible: Boolean = true,
+    title: String = "Untitled",
+    icon: Painter? = null,
+    decoration: WindowDecoration = WindowDecoration.SystemDefault,
     transparent: Boolean = false,
     resizable: Boolean = true,
     enabled: Boolean = true,
@@ -200,7 +333,7 @@ fun DialogWindow(
     val currentState by rememberUpdatedState(state)
     val currentTitle by rememberUpdatedState(title)
     val currentIcon by rememberUpdatedState(icon)
-    val currentUndecorated by rememberUpdatedState(undecorated)
+    val currentDecoration by rememberUpdatedState(decoration)
     val currentTransparent by rememberUpdatedState(transparent)
     val currentResizable by rememberUpdatedState(resizable)
     val currentEnabled by rememberUpdatedState(enabled)
@@ -279,12 +412,13 @@ fun DialogWindow(
             updater.update {
                 set(currentTitle, dialog::setTitle)
                 set(currentIcon, dialog::setIcon)
-                set(currentUndecorated, dialog::setUndecoratedSafely)
+                set(currentDecoration is UndecoratedWindowDecoration, dialog::setUndecoratedSafely)
                 set(currentTransparent, dialog::isTransparent::set)
                 set(currentResizable, dialog::setResizable)
                 set(currentEnabled, dialog::setEnabled)
                 set(currentFocusable, dialog::setFocusableWindowState)
                 set(currentAlwaysOnTop, dialog::setAlwaysOnTop)
+                set(currentDecoration.resizerThickness, dialog::undecoratedResizerThickness::set)
             }
             if (state.size != appliedState.size) {
                 dialog.setSizeSafely(state.size, WindowPlacement.Floating)