From 21a89d989f2859eca3f440cebd4d282f6d753b93 Mon Sep 17 00:00:00 2001
From: Konstantin <konstantin.tskhovrebov@jetbrains.com>
Date: Fri, 26 Jul 2024 12:54:00 +0200
Subject: [PATCH] [resources] Add image bitmap/xml/svg bytearray converters to
 the corresponding source sets. (#5098)

The PR adds a method to convert a bitmap bytearray to the ImageBitma, a
vector XML content bytearray to the ImageVector in the common code. And
the same for an SVG files on non-android targets.

<!-- Optional -->
Fixes https://youtrack.jetbrains.com/issue/CMP-3869
Fixes https://youtrack.jetbrains.com/issue/CMP-4925

## Release Notes
### Features - Resources
- Added utility functions to decode `Bitmap ByteArray as ImageVector`
and `XML ByteArray as ImageVector` in the common code and `SVG ByteArray
as Painter` in the non-android code
---
 .../compose/resources/ImageDecoders.kt        | 31 +++++++++++++++++++
 .../compose/resources/ImageDecoders.skiko.kt  | 17 ++++++++++
 2 files changed, 48 insertions(+)
 create mode 100644 components/resources/library/src/commonMain/kotlin/org/jetbrains/compose/resources/ImageDecoders.kt
 create mode 100644 components/resources/library/src/skikoMain/kotlin/org/jetbrains/compose/resources/ImageDecoders.skiko.kt

diff --git a/components/resources/library/src/commonMain/kotlin/org/jetbrains/compose/resources/ImageDecoders.kt b/components/resources/library/src/commonMain/kotlin/org/jetbrains/compose/resources/ImageDecoders.kt
new file mode 100644
index 0000000000..b393c1e912
--- /dev/null
+++ b/components/resources/library/src/commonMain/kotlin/org/jetbrains/compose/resources/ImageDecoders.kt
@@ -0,0 +1,31 @@
+package org.jetbrains.compose.resources
+
+import androidx.compose.ui.graphics.ImageBitmap
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.unit.Density
+import org.jetbrains.compose.resources.vector.toImageVector
+
+/**
+ * Decodes a byte array of a Bitmap to an ImageBitmap. Supports JPEG, PNG, BMP, WEBP
+ *
+ * Different platforms can support additional formats.
+ *
+ * @return The converted ImageBitmap.
+ */
+@ExperimentalResourceApi
+fun ByteArray.decodeToImageBitmap(): ImageBitmap {
+    val dumbDensity = 0 //any equal source and target density disable scaling here
+    return this.toImageBitmap(dumbDensity, dumbDensity)
+}
+
+/**
+ * Decodes a byte array of a vector XML file to an ImageVector.
+ *
+ * @param density density to apply during converting the source units to the [ImageVector] units.
+ *
+ * @return The converted ImageVector.
+ */
+@ExperimentalResourceApi
+fun ByteArray.decodeToImageVector(density: Density): ImageVector {
+    return this.toXmlElement().toImageVector(density)
+}
diff --git a/components/resources/library/src/skikoMain/kotlin/org/jetbrains/compose/resources/ImageDecoders.skiko.kt b/components/resources/library/src/skikoMain/kotlin/org/jetbrains/compose/resources/ImageDecoders.skiko.kt
new file mode 100644
index 0000000000..fe5e92eab7
--- /dev/null
+++ b/components/resources/library/src/skikoMain/kotlin/org/jetbrains/compose/resources/ImageDecoders.skiko.kt
@@ -0,0 +1,17 @@
+package org.jetbrains.compose.resources
+
+import androidx.compose.ui.graphics.painter.Painter
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.unit.Density
+
+/**
+ * Decodes a byte array of an SVG file to a compose Painter.
+ *
+ * @param density density to apply during converting the source units to the [Painter] units.
+ *
+ * @return The converted Painter.
+ */
+@ExperimentalResourceApi
+fun ByteArray.decodeToSvgPainter(density: Density): Painter {
+    return this.toSvgElement().toSvgPainter(density)
+}
\ No newline at end of file