bf759711ef
* 4% of original pixels must be visible. * The entire crop must be within the image. * On release, try to scale crop area and image to fit if the crop is invalid. * Undo to last valid position if that didn't work. * Additionally, center thumbs now do not respect aspect ratio lock.
118 lines
2.9 KiB
Java
118 lines
2.9 KiB
Java
package org.thoughtcrime.securesms.imageeditor;
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import android.content.Context;
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import android.graphics.Canvas;
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import android.graphics.Matrix;
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import android.graphics.Point;
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import android.graphics.RectF;
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import android.support.annotation.NonNull;
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import android.support.annotation.Nullable;
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/**
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* Contains all of the information required for a {@link Renderer} to do its job.
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* <p>
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* Includes a {@link #canvas}, preconfigured with the correct matrix.
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* <p>
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* The {@link #canvasMatrix} should further matrix manipulation be required.
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*/
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public final class RendererContext {
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@NonNull
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public final Context context;
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@NonNull
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public final Canvas canvas;
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@NonNull
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public final CanvasMatrix canvasMatrix;
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@NonNull
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public final Ready rendererReady;
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@NonNull
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public final Invalidate invalidate;
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private boolean blockingLoad;
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private float fade = 1f;
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private boolean isEditing = true;
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public RendererContext(@NonNull Context context, @NonNull Canvas canvas, @NonNull Ready rendererReady, @NonNull Invalidate invalidate) {
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this.context = context;
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this.canvas = canvas;
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this.canvasMatrix = new CanvasMatrix(canvas);
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this.rendererReady = rendererReady;
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this.invalidate = invalidate;
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}
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public void setBlockingLoad(boolean blockingLoad) {
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this.blockingLoad = blockingLoad;
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}
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/**
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* {@link Renderer}s generally run in the foreground but can load any data they require in the background.
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* <p>
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* If they do so, they can use the {@link #invalidate} callback when ready to inform the view it needs to be redrawn.
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* <p>
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* However, when isBlockingLoad is true, the renderer is running in the background for the final render
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* and must load the data immediately and block the render until done so.
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*/
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public boolean isBlockingLoad() {
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return blockingLoad;
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}
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public boolean mapRect(@NonNull RectF dst, @NonNull RectF src) {
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return canvasMatrix.mapRect(dst, src);
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}
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public void setIsEditing(boolean isEditing) {
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this.isEditing = isEditing;
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}
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public boolean isEditing() {
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return isEditing;
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}
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public void setFade(float fade) {
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this.fade = fade;
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}
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public int getAlpha(int alpha) {
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return Math.max(0, Math.min(255, (int) (fade * alpha)));
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}
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/**
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* Persist the current state on to a stack, must be complimented by a call to {@link #restore()}.
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*/
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public void save() {
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canvasMatrix.save();
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}
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/**
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* Restore the current state from the stack, must match a call to {@link #save()}.
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*/
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public void restore() {
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canvasMatrix.restore();
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}
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public void getCurrent(@NonNull Matrix into) {
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canvasMatrix.getCurrent(into);
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}
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public interface Ready {
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Ready NULL = (renderer, cropMatrix, size) -> {
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};
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void onReady(@NonNull Renderer renderer, @Nullable Matrix cropMatrix, @Nullable Point size);
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}
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public interface Invalidate {
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Invalidate NULL = (renderer) -> {
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};
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void onInvalidate(@NonNull Renderer renderer);
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}
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}
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