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Code Issues Packages Projects Releases Wiki Activity

Allow injectable typefaces in image text editor.

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Co-authored-by: Rashad Sookram <rashad@signal.org>
This commit is contained in:
Alex Hart
2022-03-11 14:27:07 -04:00
committed by Cody Henthorne
parent eed45b57a1
commit 732b67d8cb
13 changed files with 103 additions and 41 deletions
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18
image-editor/app/src/main/java/org/signal/imageeditor/app/MainActivity.java
View File

@@ -1,12 +1,15 @@
package org.signal.imageeditor.app;
import android.Manifest;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Typeface;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
@@ -24,6 +27,8 @@ import androidx.core.content.ContextCompat;
import org.signal.imageeditor.app.renderers.UriRenderer;
import org.signal.imageeditor.app.renderers.UrlRenderer;
import org.signal.imageeditor.core.ImageEditorView;
import org.signal.imageeditor.core.Renderer;
import org.signal.imageeditor.core.RendererContext;
import org.signal.imageeditor.core.UndoRedoStackListener;
import org.signal.imageeditor.core.model.EditorElement;
import org.signal.imageeditor.core.model.EditorModel;
@@ -43,6 +48,17 @@ public final class MainActivity extends AppCompatActivity {
private ImageEditorView imageEditorView;
private Menu menu;
private final RendererContext.TypefaceProvider typefaceProvider = (context, renderer, invalidate) -> {
if (Build.VERSION.SDK_INT < 26) {
return Typeface.create(Typeface.DEFAULT, Typeface.BOLD);
} else {
return new Typeface.Builder("")
.setFallback("sans-serif")
.setWeight(900)
.build();
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
@@ -206,7 +222,7 @@ public final class MainActivity extends AppCompatActivity {
new String[]{ Manifest.permission.WRITE_EXTERNAL_STORAGE },
0);
} else {
Bitmap bitmap = imageEditorView.getModel().render(this);
Bitmap bitmap = imageEditorView.getModel().render(this, typefaceProvider);
try {
Uri uri = saveBmp(bitmap);

13
image-editor/lib/src/main/java/org/signal/imageeditor/core/ImageEditorView.java
View File

@@ -76,8 +76,9 @@ public final class ImageEditorView extends FrameLayout {
private final RectF visibleViewPort = Bounds.newFullBounds();
private final RectF screen = new RectF();
private TapListener tapListener;
private RendererContext rendererContext;
private TapListener tapListener;
private RendererContext rendererContext;
private RendererContext.TypefaceProvider typefaceProvider;
@Nullable
private EditSession editSession;
@@ -145,10 +146,14 @@ public final class ImageEditorView extends FrameLayout {
}
}
public void setTypefaceProvider(@NonNull RendererContext.TypefaceProvider typefaceProvider) {
this.typefaceProvider = typefaceProvider;
}
@Override
protected void onDraw(Canvas canvas) {
if (rendererContext == null || rendererContext.canvas != canvas) {
rendererContext = new RendererContext(getContext(), canvas, rendererReady, rendererInvalidate);
if (rendererContext == null || rendererContext.canvas != canvas || rendererContext.typefaceProvider != typefaceProvider) {
rendererContext = new RendererContext(getContext(), canvas, rendererReady, rendererInvalidate, typefaceProvider);
}
rendererContext.save();
try {

25
image-editor/lib/src/main/java/org/signal/imageeditor/core/RendererContext.java
View File

@@ -6,6 +6,8 @@ import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Point;
import android.graphics.RectF;
import android.graphics.Typeface;
import android.os.Build;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
@@ -39,6 +41,9 @@ public final class RendererContext {
@NonNull
public final Invalidate invalidate;
@NonNull
public final TypefaceProvider typefaceProvider;
private boolean blockingLoad;
private float fade = 1f;
@@ -48,12 +53,13 @@ public final class RendererContext {
private List<EditorElement> children = Collections.emptyList();
private Paint maskPaint;
public RendererContext(@NonNull Context context, @NonNull Canvas canvas, @NonNull Ready rendererReady, @NonNull Invalidate invalidate) {
this.context = context;
this.canvas = canvas;
this.canvasMatrix = new CanvasMatrix(canvas);
this.rendererReady = rendererReady;
this.invalidate = invalidate;
public RendererContext(@NonNull Context context, @NonNull Canvas canvas, @NonNull Ready rendererReady, @NonNull Invalidate invalidate, @NonNull TypefaceProvider typefaceProvider) {
this.context = context;
this.canvas = canvas;
this.canvasMatrix = new CanvasMatrix(canvas);
this.rendererReady = rendererReady;
this.invalidate = invalidate;
this.typefaceProvider = typefaceProvider;
}
public void setBlockingLoad(boolean blockingLoad) {
@@ -126,6 +132,13 @@ public final class RendererContext {
return maskPaint;
}
/**
* Allows a RenderContext creator to specify which font to use for text on the fly.
*/
public interface TypefaceProvider {
@NonNull Typeface getSelectedTypeface(@NonNull Context context, @NonNull Renderer renderer, @NonNull Invalidate invalidate);
}
public interface Ready {
Ready NULL = (renderer, cropMatrix, size) -> {

8
image-editor/lib/src/main/java/org/signal/imageeditor/core/model/EditorModel.java
View File

@@ -716,15 +716,15 @@ public final class EditorModel implements Parcelable, RendererContext.Ready {
* Blocking render of the model.
*/
@WorkerThread
public @NonNull Bitmap render(@NonNull Context context) {
return render(context, null);
public @NonNull Bitmap render(@NonNull Context context, @NonNull RendererContext.TypefaceProvider typefaceProvider) {
return render(context, null, typefaceProvider);
}
/**
* Blocking render of the model.
*/
@WorkerThread
public @NonNull Bitmap render(@NonNull Context context, @Nullable Point size) {
public @NonNull Bitmap render(@NonNull Context context, @Nullable Point size, @NonNull RendererContext.TypefaceProvider typefaceProvider) {
EditorElement image = editorElementHierarchy.getFlipRotate();
RectF cropRect = editorElementHierarchy.getCropRect();
Point outputSize = size != null ? size : getOutputSize();
@@ -732,7 +732,7 @@ public final class EditorModel implements Parcelable, RendererContext.Ready {
Bitmap bitmap = Bitmap.createBitmap(outputSize.x, outputSize.y, Bitmap.Config.ARGB_8888);
try {
Canvas canvas = new Canvas(bitmap);
RendererContext rendererContext = new RendererContext(context, canvas, RendererContext.Ready.NULL, RendererContext.Invalidate.NULL);
RendererContext rendererContext = new RendererContext(context, canvas, RendererContext.Ready.NULL, RendererContext.Invalidate.NULL, typefaceProvider);
RectF bitmapArea = new RectF();
bitmapArea.right = bitmap.getWidth();

20
image-editor/lib/src/main/java/org/signal/imageeditor/core/renderers/MultiLineTextRenderer.java
View File

@@ -6,8 +6,6 @@ import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Typeface;
import android.os.Build;
import android.os.Parcel;
import android.view.animation.Interpolator;
@@ -70,11 +68,8 @@ public final class MultiLineTextRenderer extends InvalidateableRenderer implemen
public MultiLineTextRenderer(@Nullable String text, @ColorInt int color, @NonNull Mode mode) {
this.mode = mode;
Typeface typeface = getTypeface();
modePaint.setAntiAlias(true);
modePaint.setTextSize(100);
modePaint.setTypeface(typeface);
setColorInternal(color);
@@ -82,7 +77,6 @@ public final class MultiLineTextRenderer extends InvalidateableRenderer implemen
paint.setAntiAlias(true);
paint.setTextSize(100);
paint.setTypeface(typeface);
textScale = paint.getTextSize() / regularTextSize;
@@ -96,6 +90,9 @@ public final class MultiLineTextRenderer extends InvalidateableRenderer implemen
public void render(@NonNull RendererContext rendererContext) {
super.render(rendererContext);
paint.setTypeface(rendererContext.typefaceProvider.getSelectedTypeface(rendererContext.context, this, rendererContext.invalidate));
modePaint.setTypeface(rendererContext.typefaceProvider.getSelectedTypeface(rendererContext.context, this, rendererContext.invalidate));
float height = 0;
float width = 0;
for (Line line : lines) {
@@ -507,17 +504,6 @@ public final class MultiLineTextRenderer extends InvalidateableRenderer implemen
};
}
private static @NonNull Typeface getTypeface() {
if (Build.VERSION.SDK_INT < 26) {
return Typeface.create(Typeface.DEFAULT, Typeface.BOLD);
} else {
return new Typeface.Builder("")
.setFallback("sans-serif")
.setWeight(900)
.build();
}
}
public enum Mode {
REGULAR(0),
HIGHLIGHT(1),