Upgrade to Ink 1.1.0-alpha03

app/src/main/java/com/example/cahier/core/ui/CahierTextureBitmapStore.kt

@@ -21,7 +21,6 @@ import android.content.Context
 import android.graphics.Bitmap
 import android.graphics.BitmapFactory
 import androidx.annotation.DrawableRes
-import androidx.ink.brush.ExperimentalInkCustomBrushApi
 import androidx.ink.brush.TextureBitmapStore
 import com.example.cahier.R
 import dagger.hilt.android.qualifiers.ApplicationContext
@@ -31,7 +30,6 @@ import kotlinx.coroutines.flow.update
 import javax.inject.Inject
 import javax.inject.Singleton
 
-@OptIn(ExperimentalInkCustomBrushApi::class)
 @Singleton
 class CahierTextureBitmapStore @Inject constructor(@ApplicationContext context: Context) :
     TextureBitmapStore {

app/src/main/java/com/example/cahier/developer/brushdesigner/ui/BrushDesignerScreen.kt

@@ -79,7 +79,6 @@ import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.hilt.lifecycle.viewmodel.compose.hiltViewModel
 import androidx.ink.brush.Brush
-import androidx.ink.brush.ExperimentalInkCustomBrushApi
 import androidx.ink.brush.StockBrushes
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.example.cahier.R
@@ -95,7 +94,6 @@ import ink.proto.BrushTip as ProtoBrushTip
     ExperimentalMaterial3Api::class,
     ExperimentalMaterial3WindowSizeClassApi::class,
     ExperimentalMaterial3AdaptiveApi::class,
-    ExperimentalInkCustomBrushApi::class
 )
 @Composable
 fun BrushDesignerScreen(
@@ -267,7 +265,7 @@ fun BrushDesignerScreen(
  * Note: Still accepts ViewModel for delegation to tab content and input model
  * sections. All state (activeProto, selectedCoatIndex) is hoisted from the screen.
  */
-@OptIn(ExperimentalInkCustomBrushApi::class, ExperimentalMaterial3Api::class)
+@OptIn(ExperimentalMaterial3Api::class)
 @Composable
 private fun ControlsPane(
     modifier: Modifier = Modifier,

app/src/main/java/com/example/cahier/developer/brushdesigner/ui/PreviewPane.kt

@@ -53,7 +53,6 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import androidx.ink.brush.Brush
-import androidx.ink.brush.ExperimentalInkCustomBrushApi
 import androidx.ink.rendering.android.canvas.CanvasStrokeRenderer
 import androidx.ink.strokes.Stroke
 import com.example.cahier.R
@@ -72,7 +71,6 @@ import ink.proto.BrushFamily as ProtoBrushFamily
  *
  * Stateless: receives all state and callbacks, does not access ViewModel.
  */
-@OptIn(ExperimentalInkCustomBrushApi::class)
 @Composable
 internal fun PreviewPane(
     modifier: Modifier = Modifier,

app/src/main/java/com/example/cahier/developer/brushdesigner/ui/TipShapeTab.kt

@@ -33,7 +33,6 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import androidx.ink.brush.Brush
-import androidx.ink.brush.ExperimentalInkCustomBrushApi
 import com.example.cahier.R
 import ink.proto.BrushTip as ProtoBrushTip
 
@@ -46,7 +45,6 @@ import ink.proto.BrushTip as ProtoBrushTip
  *
  * Stateless: receives data and callbacks, does not access ViewModel.
  */
-@OptIn(ExperimentalInkCustomBrushApi::class)
 @Composable
 internal fun TipShapeTabContent(
     currentTip: ProtoBrushTip,

app/src/main/java/com/example/cahier/developer/brushdesigner/viewmodel/BrushDesignerViewModel.kt

@@ -23,7 +23,6 @@ import android.net.Uri
 import androidx.compose.ui.graphics.Color
 import androidx.ink.brush.Brush
 import androidx.ink.brush.BrushFamily
-import androidx.ink.brush.ExperimentalInkCustomBrushApi
 import androidx.ink.brush.Version
 import androidx.ink.brush.compose.createWithComposeColor
 import androidx.ink.storage.decode
@@ -65,7 +64,7 @@ import ink.proto.BrushFamily as ProtoBrushFamily
 import ink.proto.BrushPaint as ProtoBrushPaint
 import ink.proto.BrushTip as ProtoBrushTip
 
-@OptIn(ExperimentalInkCustomBrushApi::class, FlowPreview::class)
+@OptIn(FlowPreview::class)
 @HiltViewModel
 class BrushDesignerViewModel @Inject constructor(
     @param:ApplicationContext private val context: Context,

app/src/main/java/com/example/cahier/developer/brushgraph/ui/GraphCanvas.kt

@@ -13,7 +13,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-@file:OptIn(androidx.ink.brush.ExperimentalInkCustomBrushApi::class)
 
 package com.example.cahier.developer.brushgraph.ui
 

app/src/main/java/com/example/cahier/features/drawing/CustomBrushes.kt

@@ -1,28 +1,23 @@
 /*
+ * Copyright 2025 Google LLC. All rights reserved.
  *
- *  *
- *  *  * Copyright 2025 Google LLC. All rights reserved.
- *  *  *
- *  *  * 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.
- *  *
+ * 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.
  */
 
 package com.example.cahier.features.drawing
 
 import android.content.Context
 import android.util.Log
-import androidx.ink.brush.ExperimentalInkCustomBrushApi
 import androidx.ink.brush.Version
 import androidx.ink.storage.AndroidBrushFamilySerialization
 import com.example.cahier.R
@@ -40,7 +35,6 @@ object CustomBrushes {
         }
     }
 
-    @OptIn(ExperimentalInkCustomBrushApi::class)
     private fun loadCustomBrushes(
         context: Context,
         textureStore: CahierTextureBitmapStore,

app/src/main/java/com/example/cahier/features/drawing/viewmodel/DrawingCanvasViewModel.kt

@@ -29,7 +29,6 @@ import androidx.core.graphics.createBitmap
 import androidx.core.net.toUri
 import androidx.ink.brush.Brush
 import androidx.ink.brush.BrushFamily
-import androidx.ink.brush.ExperimentalInkCustomBrushApi
 import androidx.ink.brush.StockBrushes
 import androidx.ink.brush.Version
 import androidx.ink.brush.compose.composeColor
@@ -92,9 +91,12 @@ class DrawingCanvasViewModel @Inject constructor(
 
     private val currentNightMode = AppCompatDelegate.getDefaultNightMode()
 
-    private val heartHighlighter = StockBrushes.emojiHighlighter("emoji-heart", showMiniEmojiTrail = true)
-    private val poopHighlighter = StockBrushes.emojiHighlighter("emoji-poop", showMiniEmojiTrail = true)
-    private val starHighlighter = StockBrushes.emojiHighlighter("emoji-star", showMiniEmojiTrail = true)
+    private val heartHighlighter =
+        StockBrushes.emojiHighlighter("emoji-heart", showMiniEmojiTrail = true)
+    private val poopHighlighter =
+        StockBrushes.emojiHighlighter("emoji-poop", showMiniEmojiTrail = true)
+    private val starHighlighter =
+        StockBrushes.emojiHighlighter("emoji-star", showMiniEmojiTrail = true)
     private val highlighter = StockBrushes.highlighter()
 
     private val _defaultBrush = MutableStateFlow(
@@ -382,7 +384,7 @@ class DrawingCanvasViewModel @Inject constructor(
         isBrushSelectedInSession = true
         _selectedBrush.update { currentBrush ->
             val newBrush = currentBrush.copy(family = brushFamily)
-            val colorToApply = when(newBrush.family) {
+            val colorToApply = when (newBrush.family) {
                 highlighter -> newBrush.composeColor.copy(alpha = HIGHLIGHTER_ALPHA)
                 heartHighlighter -> Color(0xFFFF45CA).copy(alpha = HIGHLIGHTER_ALPHA)
                 poopHighlighter -> Color(0xFF783013).copy(alpha = HIGHLIGHTER_ALPHA)
@@ -397,7 +399,7 @@ class DrawingCanvasViewModel @Inject constructor(
         isBrushSelectedInSession = true
         _selectedBrush.update { currentBrush ->
             val newBrush = currentBrush.copy(family = brushFamily, size = size)
-            val colorToApply = when(newBrush.family) {
+            val colorToApply = when (newBrush.family) {
                 highlighter -> newBrush.composeColor.copy(alpha = HIGHLIGHTER_ALPHA)
                 heartHighlighter -> Color(0xFFFF45CA).copy(alpha = HIGHLIGHTER_ALPHA)
                 poopHighlighter -> Color(0xFF783013).copy(alpha = HIGHLIGHTER_ALPHA)
@@ -411,12 +413,14 @@ class DrawingCanvasViewModel @Inject constructor(
     fun changeBrushColor(color: Color) {
         isBrushSelectedInSession = true
         _selectedBrush.update { currentBrush ->
-            val colorToApply = when(currentBrush.family) {
+            val colorToApply = when (currentBrush.family) {
                 heartHighlighter,
                 poopHighlighter,
                 starHighlighter,
-                highlighter -> color.copy(alpha = HIGHLIGHTER_ALPHA)
-               else -> color.copy(alpha = 1f)
+                highlighter,
+                    -> color.copy(alpha = HIGHLIGHTER_ALPHA)
+
+                else -> color.copy(alpha = 1f)
             }
             currentBrush.copyWithComposeColor(color = colorToApply)
         }
@@ -467,7 +471,6 @@ class DrawingCanvasViewModel @Inject constructor(
         return _selectedBrush.value
     }
 
-    @OptIn(ExperimentalInkCustomBrushApi::class)
     suspend fun saveCurrentBrushToAutosave() {
         withContext(Dispatchers.IO) {
             try {
@@ -491,7 +494,6 @@ class DrawingCanvasViewModel @Inject constructor(
         }
     }
 
-    @OptIn(ExperimentalInkCustomBrushApi::class)
     private fun loadCustomBrushes() {
         viewModelScope.launch(Dispatchers.IO) {
             val builtInBrushes = CustomBrushes.getBrushes(context, textureStore)

gradle/libs.versions.toml

@@ -5,7 +5,7 @@ coilCompose = "3.4.0"
 foundation = "1.10.5"
 hiltAndroid = "2.59.2"
 hiltNavigationCompose = "1.3.0"
-ink = "1.1.0-alpha02"
+ink = "1.1.0-alpha03"
 kotlin = "2.3.20"
 coreKtx = "1.18.0"
 junit = "4.13.2"

ink-proto/src/main/proto/brush_family.proto

@@ -474,7 +474,7 @@ message BrushPaint {
   // (self overlap is discarded). More complex examples may involve color or
   // opacity variations (e.g. with
   // `BrushBehavior::Target::HUE_OFFSET_IN_RADIANS`), or complex textures (e.g.
-  // with `TextureMapping::kStamping`).
+  // with `BrushPaint::StampingTexture`).
   enum SelfOverlap {
     SELF_OVERLAP_UNSPECIFIED = 0 [(ink.proto.enum_value_min_version) = 0];
     SELF_OVERLAP_ANY = 1 [(ink.proto.enum_value_min_version) = 0];
@@ -1349,8 +1349,22 @@ message ColorFunction {
   option (ink.proto.message_min_version) = 0;
 
   oneof function {
+    // Applies a multiplier to the color's opacity.  The multiplier must be
+    // finite and nonnegative.  Typical multiplier values range between 0 and 1.
     float opacity_multiplier = 1 [(ink.proto.field_min_version) = 0];
+    // Ignores the original color and replaces it with a fixed color.
     Color replace_color = 2 [(ink.proto.field_min_version) = 0];
+    // Applies an additive offset to the color's hue angle.  The offset angle
+    // must be finite, but can be positive or negative (or zero).
+    float hue_offset_radians = 3 [(ink.proto.field_min_version) = 2147483647];
+    // Applies a multiplier to the color's saturation.  The multiplier must be
+    // finite and nonnegative.  Typical multiplier values range between 0 and 1.
+    float saturation_multiplier = 4
+        [(ink.proto.field_min_version) = 2147483647];
+    // Applies an additive offset to the color's luminosity.  The offset must be
+    // finite, but can be positive or negative (or zero).  Typical offset values
+    // range between -1 and 1.
+    float luminosity_offset = 5 [(ink.proto.field_min_version) = 2147483647];
   }
 }