-
-
Notifications
You must be signed in to change notification settings - Fork 115
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge pull request #164 from skydoves/animation/crossfade
Introduce CrossfadePlugin
- Loading branch information
Showing
13 changed files
with
395 additions
and
50 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
63 changes: 63 additions & 0 deletions
63
...mation/src/main/kotlin/com/skydoves/landscapist/animation/crossfade/CrossfadeAnimation.kt
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| /* | ||
| * Designed and developed by 2020-2022 skydoves (Jaewoong Eum) | ||
| * | ||
| * 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.skydoves.landscapist.animation.crossfade | ||
|
|
||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.ui.geometry.Size | ||
| import androidx.compose.ui.graphics.ColorFilter | ||
| import androidx.compose.ui.graphics.ColorMatrix | ||
| import androidx.compose.ui.graphics.ImageBitmap | ||
| import androidx.compose.ui.graphics.painter.Painter | ||
|
|
||
| /** | ||
| * This is an extension of the [Painter] for giving crossfade animation to the given [imageBitmap]. | ||
| * | ||
| * @param imageBitmap an image bitmap for loading the content. | ||
| * @param durationMs milli-second times from start to finish animation. | ||
| */ | ||
| @Composable | ||
| internal fun Painter.rememberCrossfadePainter( | ||
| imageBitmap: ImageBitmap, | ||
| durationMs: Int | ||
| ): Painter { | ||
| val size = Size(imageBitmap.width.toFloat(), imageBitmap.height.toFloat()) | ||
| val colorMatrix = remember { ColorMatrix() } | ||
| val fadeInTransition = updateFadeInTransition(key = size, durationMs = durationMs) | ||
| val transitionColorFilter = if (!fadeInTransition.isFinished) { | ||
| colorMatrix.apply { | ||
| updateAlpha(fadeInTransition.alpha) | ||
| updateBrightness(fadeInTransition.brightness) | ||
| updateSaturation(fadeInTransition.saturation) | ||
| }.let { ColorFilter.colorMatrix(it) } | ||
| } else { | ||
| // If the fade-in isn't running, reset the color matrix | ||
| null | ||
| } | ||
|
|
||
| return remember( | ||
| key1 = fadeInTransition.alpha, | ||
| key2 = fadeInTransition.brightness, | ||
| key3 = fadeInTransition.saturation | ||
| ) { | ||
| CrossfadePainter( | ||
| imageBitmap = imageBitmap, | ||
| painter = this | ||
| ).also { | ||
| it.transitionColorFilter = transitionColorFilter | ||
| } | ||
| } | ||
| } |
106 changes: 106 additions & 0 deletions
106
...nimation/src/main/kotlin/com/skydoves/landscapist/animation/crossfade/CrossfadePainter.kt
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| /* | ||
| * Designed and developed by 2020-2022 skydoves (Jaewoong Eum) | ||
| * | ||
| * 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.skydoves.landscapist.animation.crossfade | ||
|
|
||
| import android.graphics.Matrix | ||
| import android.graphics.RectF | ||
| import androidx.compose.runtime.getValue | ||
| import androidx.compose.runtime.mutableStateOf | ||
| import androidx.compose.runtime.setValue | ||
| import androidx.compose.ui.geometry.Size | ||
| import androidx.compose.ui.geometry.toRect | ||
| import androidx.compose.ui.graphics.ColorFilter | ||
| import androidx.compose.ui.graphics.ImageBitmap | ||
| import androidx.compose.ui.graphics.ImageShader | ||
| import androidx.compose.ui.graphics.Paint | ||
| import androidx.compose.ui.graphics.ShaderBrush | ||
| import androidx.compose.ui.graphics.TileMode | ||
| import androidx.compose.ui.graphics.asAndroidBitmap | ||
| import androidx.compose.ui.graphics.drawscope.DrawScope | ||
| import androidx.compose.ui.graphics.drawscope.drawIntoCanvas | ||
| import androidx.compose.ui.graphics.painter.Painter | ||
| import androidx.core.util.Pools | ||
|
|
||
| /** | ||
| * CrossfadePainter is a [Painter] that applies crossfade filter effect on the given [imageBitmap]. | ||
| * | ||
| * @param imageBitmap an image bitmap for loading for the content. | ||
| * @param painter an image painter to draw an [ImageBitmap] into the provided canvas. | ||
| */ | ||
| internal class CrossfadePainter( | ||
| private val imageBitmap: ImageBitmap, | ||
| private val painter: Painter | ||
| ) : Painter() { | ||
|
|
||
| /** return the dimension size of the [painter]'s intrinsic width and height. */ | ||
| override val intrinsicSize: Size get() = painter.intrinsicSize | ||
|
|
||
| /** color filter that will be applied to draw the [imageBitmap]. */ | ||
| var transitionColorFilter by mutableStateOf<ColorFilter?>(null) | ||
|
|
||
| override fun DrawScope.onDraw() { | ||
| drawIntoCanvas { canvas -> | ||
| var dx = 0f | ||
| var dy = 0f | ||
| val scale: Float | ||
| val shaderMatrix = Matrix() | ||
| val shader = ImageShader(imageBitmap, TileMode.Clamp) | ||
| val brush = ShaderBrush(shader) | ||
| val paint = paintPool.acquire() ?: Paint() | ||
| paint.asFrameworkPaint().apply { | ||
| isAntiAlias = true | ||
| isDither = true | ||
| isFilterBitmap = true | ||
| } | ||
|
|
||
| // cache the paint in the internal stack. | ||
| canvas.saveLayer(size.toRect(), paint) | ||
|
|
||
| val mDrawableRect = RectF(0f, 0f, size.width, size.height) | ||
| val bitmapWidth: Int = imageBitmap.asAndroidBitmap().width | ||
| val bitmapHeight: Int = imageBitmap.asAndroidBitmap().height | ||
|
|
||
| if (bitmapWidth * mDrawableRect.height() > mDrawableRect.width() * bitmapHeight) { | ||
| scale = mDrawableRect.height() / bitmapHeight.toFloat() | ||
| dx = (mDrawableRect.width() - bitmapWidth * scale) * 0.5f | ||
| } else { | ||
| scale = mDrawableRect.width() / bitmapWidth.toFloat() | ||
| dy = (mDrawableRect.height() - bitmapHeight * scale) * 0.5f | ||
| } | ||
|
|
||
| // resize the matrix to scale by sx and sy. | ||
| shaderMatrix.setScale(scale, scale) | ||
|
|
||
| // post translate the matrix with the specified translation. | ||
| shaderMatrix.postTranslate( | ||
| (dx + 0.5f) + mDrawableRect.left, | ||
| (dy + 0.5f) + mDrawableRect.top | ||
| ) | ||
| // apply the scaled matrix to the shader. | ||
| shader.setLocalMatrix(shaderMatrix) | ||
| // draw an image bitmap as a rect. | ||
| drawRect(brush = brush, colorFilter = transitionColorFilter) | ||
| // restore canvas. | ||
| canvas.restore() | ||
| // resets the paint and release to the pool. | ||
| paint.asFrameworkPaint().reset() | ||
| paintPool.release(paint) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /** paint pool which caching and reusing [Paint] instances. */ | ||
| private val paintPool = Pools.SimplePool<Paint>(2) |
41 changes: 41 additions & 0 deletions
41
...animation/src/main/kotlin/com/skydoves/landscapist/animation/crossfade/CrossfadePlugin.kt
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| /* | ||
| * Designed and developed by 2020-2022 skydoves (Jaewoong Eum) | ||
| * | ||
| * 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.skydoves.landscapist.animation.crossfade | ||
|
|
||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.Immutable | ||
| import androidx.compose.ui.graphics.ImageBitmap | ||
| import androidx.compose.ui.graphics.painter.Painter | ||
| import com.skydoves.landscapist.plugins.ImagePlugin | ||
|
|
||
| /** | ||
| * An image plugin that extends [ImagePlugin.PainterPlugin] to be executed while rendering painters. | ||
| * | ||
| * @property duration milli-second times from start to finish animation. | ||
| */ | ||
| @Immutable | ||
| public class CrossfadePlugin( | ||
| private val duration: Int = 700 | ||
| ) : ImagePlugin.PainterPlugin { | ||
|
|
||
| @Composable | ||
| override fun compose(imageBitmap: ImageBitmap, painter: Painter): Painter { | ||
| return painter.rememberCrossfadePainter( | ||
| imageBitmap = imageBitmap, | ||
| durationMs = duration | ||
| ) | ||
| } | ||
| } |
Oops, something went wrong.