compile group: 'androidx.wear.tiles', name: 'tiles-renderer', version: '1.1.0-alpha07'
Artifact androidx.wear.tiles:tiles-renderer:1.1.0-alpha07 it located at Google repository (https://maven.google.com/)
This variant uses Android views to represent the contents of the Tile.
Default constructor.
Default constructor.
Returns an Android that can perform the action defined in the given tile
.
Inflates a Tile into parent.
The first child that was inflated. This may be null if the proto is empty the
top-level LayoutElement has no inner set, or the top-level LayoutElement contains an
unsupported inner type.
/*
* Copyright 2021 The Android Open Source Project
*
* 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 androidx.wear.tiles.renderer.internal;
import static androidx.core.util.Preconditions.checkNotNull;
import static java.lang.Math.max;
import static java.lang.Math.round;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.res.ColorStateList;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PorterDuff.Mode;
import android.graphics.Rect;
import android.graphics.Typeface;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.GradientDrawable;
import android.text.SpannableStringBuilder;
import android.text.Spanned;
import android.text.TextPaint;
import android.text.TextUtils.TruncateAt;
import android.text.method.LinkMovementMethod;
import android.text.style.AbsoluteSizeSpan;
import android.text.style.ClickableSpan;
import android.text.style.ForegroundColorSpan;
import android.text.style.ImageSpan;
import android.text.style.MetricAffectingSpan;
import android.text.style.StyleSpan;
import android.text.style.UnderlineSpan;
import android.util.Log;
import android.util.TypedValue;
import android.view.ContextThemeWrapper;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.ViewOutlineProvider;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;
import android.widget.LinearLayout;
import android.widget.Scroller;
import android.widget.Space;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.StyleRes;
import androidx.core.content.ContextCompat;
import androidx.wear.tiles.TileService;
import androidx.wear.tiles.proto.ActionProto.Action;
import androidx.wear.tiles.proto.ActionProto.AndroidActivity;
import androidx.wear.tiles.proto.ActionProto.AndroidExtra;
import androidx.wear.tiles.proto.ActionProto.LaunchAction;
import androidx.wear.tiles.proto.ActionProto.LoadAction;
import androidx.wear.tiles.proto.DimensionProto.ContainerDimension;
import androidx.wear.tiles.proto.DimensionProto.ContainerDimension.InnerCase;
import androidx.wear.tiles.proto.DimensionProto.DpProp;
import androidx.wear.tiles.proto.DimensionProto.ExpandedDimensionProp;
import androidx.wear.tiles.proto.DimensionProto.ImageDimension;
import androidx.wear.tiles.proto.DimensionProto.ProportionalDimensionProp;
import androidx.wear.tiles.proto.DimensionProto.SpProp;
import androidx.wear.tiles.proto.DimensionProto.SpacerDimension;
import androidx.wear.tiles.proto.DimensionProto.WrappedDimensionProp;
import androidx.wear.tiles.proto.LayoutElementProto.Arc;
import androidx.wear.tiles.proto.LayoutElementProto.ArcAnchorTypeProp;
import androidx.wear.tiles.proto.LayoutElementProto.ArcLayoutElement;
import androidx.wear.tiles.proto.LayoutElementProto.ArcLine;
import androidx.wear.tiles.proto.LayoutElementProto.ArcSpacer;
import androidx.wear.tiles.proto.LayoutElementProto.ArcText;
import androidx.wear.tiles.proto.LayoutElementProto.Box;
import androidx.wear.tiles.proto.LayoutElementProto.Column;
import androidx.wear.tiles.proto.LayoutElementProto.ContentScaleMode;
import androidx.wear.tiles.proto.LayoutElementProto.FontStyle;
import androidx.wear.tiles.proto.LayoutElementProto.FontVariant;
import androidx.wear.tiles.proto.LayoutElementProto.HorizontalAlignmentProp;
import androidx.wear.tiles.proto.LayoutElementProto.Image;
import androidx.wear.tiles.proto.LayoutElementProto.Layout;
import androidx.wear.tiles.proto.LayoutElementProto.LayoutElement;
import androidx.wear.tiles.proto.LayoutElementProto.Row;
import androidx.wear.tiles.proto.LayoutElementProto.Spacer;
import androidx.wear.tiles.proto.LayoutElementProto.Span;
import androidx.wear.tiles.proto.LayoutElementProto.SpanImage;
import androidx.wear.tiles.proto.LayoutElementProto.SpanText;
import androidx.wear.tiles.proto.LayoutElementProto.SpanVerticalAlignmentProp;
import androidx.wear.tiles.proto.LayoutElementProto.Spannable;
import androidx.wear.tiles.proto.LayoutElementProto.Text;
import androidx.wear.tiles.proto.LayoutElementProto.TextAlignmentProp;
import androidx.wear.tiles.proto.LayoutElementProto.TextOverflowProp;
import androidx.wear.tiles.proto.LayoutElementProto.VerticalAlignmentProp;
import androidx.wear.tiles.proto.ModifiersProto.ArcModifiers;
import androidx.wear.tiles.proto.ModifiersProto.Background;
import androidx.wear.tiles.proto.ModifiersProto.Border;
import androidx.wear.tiles.proto.ModifiersProto.Clickable;
import androidx.wear.tiles.proto.ModifiersProto.Modifiers;
import androidx.wear.tiles.proto.ModifiersProto.Padding;
import androidx.wear.tiles.proto.ModifiersProto.SpanModifiers;
import androidx.wear.tiles.proto.StateProto.State;
import androidx.wear.tiles.renderer.R;
import androidx.wear.tiles.renderer.internal.ResourceResolvers.ResourceAccessException;
import androidx.wear.widget.ArcLayout;
import androidx.wear.widget.CurvedTextView;
import com.google.common.util.concurrent.ListenableFuture;
import java.lang.ref.WeakReference;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executor;
import java.util.concurrent.Future;
/**
* Renderer for Tiles.
*
* <p>This variant uses Android views to represent the contents of the Tile.
*/
public final class TileRendererInternal {
private static final String TAG = "TileRendererInternal";
private static final int HORIZONTAL_ALIGN_DEFAULT_GRAVITY = Gravity.CENTER_HORIZONTAL;
private static final int VERTICAL_ALIGN_DEFAULT_GRAVITY = Gravity.CENTER_VERTICAL;
private static final int TEXT_ALIGN_DEFAULT = Gravity.CENTER_HORIZONTAL;
private static final ScaleType IMAGE_DEFAULT_SCALE_TYPE = ScaleType.FIT_CENTER;
@ArcLayout.LayoutParams.VerticalAlignment
private static final int ARC_VERTICAL_ALIGN_DEFAULT =
ArcLayout.LayoutParams.VERTICAL_ALIGN_CENTER;
private static final int SPAN_VERTICAL_ALIGN_DEFAULT = ImageSpan.ALIGN_BOTTOM;
// This is pretty badly named; TruncateAt specifies where to place the ellipsis (or whether to
// marquee). Disabling truncation with null actually disables the _ellipsis_, but text will
// still be truncated.
@Nullable private static final TruncateAt TEXT_OVERFLOW_DEFAULT = null;
private static final int TEXT_COLOR_DEFAULT = 0xFFFFFFFF;
private static final int TEXT_MAX_LINES_DEFAULT = 1;
private static final int TEXT_MIN_LINES = 1;
private static final ContainerDimension CONTAINER_DIMENSION_DEFAULT =
ContainerDimension.newBuilder()
.setWrappedDimension(WrappedDimensionProp.getDefaultInstance())
.build();
@ArcLayout.AnchorType private static final int ARC_ANCHOR_DEFAULT = ArcLayout.ANCHOR_CENTER;
// White
private static final int LINE_COLOR_DEFAULT = 0xFFFFFFFF;
final Context mUiContext;
private final Layout mLayoutProto;
private final ResourceResolvers mResourceResolvers;
private final FontSet mTitleFontSet;
private final FontSet mBodyFontSet;
final Executor mLoadActionExecutor;
final LoadActionListener mLoadActionListener;
/**
* Listener for clicks on Clickable objects that have an Action to (re)load the contents of a
* tile.
*/
public interface LoadActionListener {
/**
* Called when a Clickable that has a LoadAction is clicked.
*
* @param nextState The state that the next tile should be in.
*/
void onClick(@NonNull State nextState);
}
/**
* Default constructor.
*
* @param uiContext A {@link Context} suitable for interacting with the UI.
* @param layout The portion of the Tile to render.
* @param resourceResolvers Resolvers for the resources used for rendering this Prototile.
* @param loadActionExecutor Executor to dispatch loadActionListener on.
* @param loadActionListener Listener for clicks that will cause the contents to be reloaded.
*/
public TileRendererInternal(
@NonNull Context uiContext,
@NonNull Layout layout,
@NonNull ResourceResolvers resourceResolvers,
@NonNull Executor loadActionExecutor,
@NonNull LoadActionListener loadActionListener) {
this(
uiContext,
layout,
resourceResolvers,
/* tilesTheme= */ 0,
loadActionExecutor,
loadActionListener);
}
/**
* Default constructor.
*
* @param uiContext A {@link Context} suitable for interacting with the UI.
* @param layout The portion of the Tile to render.
* @param resourceResolvers Resolvers for the resources used for rendering this Prototile.
* @param tilesTheme The theme to use for this Tiles instance. This can be used to customise
* things like the default font family. Pass 0 to use the default theme.
* @param loadActionExecutor Executor to dispatch loadActionListener on.
* @param loadActionListener Listener for clicks that will cause the contents to be reloaded.
*/
public TileRendererInternal(
@NonNull Context uiContext,
@NonNull Layout layout,
@NonNull ResourceResolvers resourceResolvers,
@StyleRes int tilesTheme,
@NonNull Executor loadActionExecutor,
@NonNull LoadActionListener loadActionListener) {
if (tilesTheme == 0) {
tilesTheme = R.style.TilesBaseTheme;
}
TypedArray a = uiContext.obtainStyledAttributes(tilesTheme, R.styleable.TilesTheme);
this.mTitleFontSet =
new FontSet(uiContext, a.getResourceId(R.styleable.TilesTheme_tilesTitleFont, -1));
this.mBodyFontSet =
new FontSet(uiContext, a.getResourceId(R.styleable.TilesTheme_tilesBodyFont, -1));
a.recycle();
this.mUiContext = new ContextThemeWrapper(uiContext, tilesTheme);
this.mLayoutProto = layout;
this.mResourceResolvers = resourceResolvers;
this.mLoadActionExecutor = loadActionExecutor;
this.mLoadActionListener = loadActionListener;
}
private int safeDpToPx(DpProp dpProp) {
return round(
max(0, dpProp.getValue()) * mUiContext.getResources().getDisplayMetrics().density);
}
@Nullable
private static Float safeAspectRatioOrNull(
ProportionalDimensionProp proportionalDimensionProp) {
final int dividend = proportionalDimensionProp.getAspectRatioWidth();
final int divisor = proportionalDimensionProp.getAspectRatioHeight();
if (dividend <= 0 || divisor <= 0) {
return null;
}
return (float) dividend / divisor;
}
private static Rect getSourceBounds(View v) {
final int[] pos = new int[2];
v.getLocationOnScreen(pos);
return new Rect(
/* left= */ pos[0],
/* top= */ pos[1],
/* right= */ pos[0] + v.getWidth(),
/* bottom= */ pos[1] + v.getHeight());
}
/**
* Generates a generic LayoutParameters for use by all components. This just defaults to setting
* the width/height to WRAP_CONTENT.
*
* @return The default layout parameters.
*/
private static ViewGroup.LayoutParams generateDefaultLayoutParams() {
return new ViewGroup.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
}
private LayoutParams updateLayoutParamsInLinearLayout(
LinearLayout parent,
LayoutParams layoutParams,
ContainerDimension width,
ContainerDimension height) {
// This is a little bit fun. Tiles' semantics is that dimension = expand should eat all
// remaining space in that dimension, but not grow the parent. This is easy for standard
// containers, but a little trickier in rows and columns on Android.
//
// A Row (LinearLayout) supports this with width=0 and weight>0. After doing a layout pass,
// it will assign all remaining space to elements with width=0 and weight>0, biased by the
// weight. This causes problems if there are two (or more) "expand" elements in a row, which
// is itself set to WRAP_CONTENTS, and one of those elements has a measured width (e.g.
// Text). In that case, the LinearLayout will measure the text, then ensure that all
// elements with a weight set have their widths set according to the weight. For us, that
// means that _all_ elements with expand=true will size themselves to the same width as the
// Text, pushing out the bounds of the parent row. This happens on columns too, but of
// course regarding height.
//
// To get around this, if an element with expand=true is added to a row that is WRAP_CONTENT
// (e.g. a row with no explicit width, that is not expanded), we ignore the expand=true, and
// set the inner element's width to WRAP_CONTENT too.
LinearLayout.LayoutParams linearLayoutParams = new LinearLayout.LayoutParams(layoutParams);
// Handle the width
if (parent.getOrientation() == LinearLayout.HORIZONTAL
&& width.getInnerCase() == InnerCase.EXPANDED_DIMENSION) {
// If the parent container would not normally have "remaining space", ignore the
// expand=true.
if (parent.getLayoutParams().width == LayoutParams.WRAP_CONTENT) {
linearLayoutParams.width = LayoutParams.WRAP_CONTENT;
} else {
linearLayoutParams.width = 0;
linearLayoutParams.weight = 1;
}
} else {
linearLayoutParams.width = dimensionToPx(width);
}
// And the height
if (parent.getOrientation() == LinearLayout.VERTICAL
&& height.getInnerCase() == InnerCase.EXPANDED_DIMENSION) {
// If the parent container would not normally have "remaining space", ignore the
// expand=true.
if (parent.getLayoutParams().height == LayoutParams.WRAP_CONTENT) {
linearLayoutParams.height = LayoutParams.WRAP_CONTENT;
} else {
linearLayoutParams.height = 0;
linearLayoutParams.weight = 1;
}
} else {
linearLayoutParams.height = dimensionToPx(height);
}
return linearLayoutParams;
}
private LayoutParams updateLayoutParams(
ViewGroup parent,
LayoutParams layoutParams,
ContainerDimension width,
ContainerDimension height) {
if (parent instanceof LinearLayout) {
// LinearLayouts have a bunch of messy caveats in Tiles when their children can be
// expanded; factor that case out to keep this clean.
return updateLayoutParamsInLinearLayout(
(LinearLayout) parent, layoutParams, width, height);
} else {
layoutParams.width = dimensionToPx(width);
layoutParams.height = dimensionToPx(height);
}
return layoutParams;
}
private static int horizontalAlignmentToGravity(HorizontalAlignmentProp alignment) {
switch (alignment.getValue()) {
case HORIZONTAL_ALIGN_START:
return Gravity.START;
case HORIZONTAL_ALIGN_CENTER:
return Gravity.CENTER_HORIZONTAL;
case HORIZONTAL_ALIGN_END:
return Gravity.END;
case HORIZONTAL_ALIGN_LEFT:
return Gravity.LEFT;
case HORIZONTAL_ALIGN_RIGHT:
return Gravity.RIGHT;
case UNRECOGNIZED:
case HORIZONTAL_ALIGN_UNDEFINED:
return HORIZONTAL_ALIGN_DEFAULT_GRAVITY;
}
return HORIZONTAL_ALIGN_DEFAULT_GRAVITY;
}
private static int verticalAlignmentToGravity(VerticalAlignmentProp alignment) {
switch (alignment.getValue()) {
case VERTICAL_ALIGN_TOP:
return Gravity.TOP;
case VERTICAL_ALIGN_CENTER:
return Gravity.CENTER_VERTICAL;
case VERTICAL_ALIGN_BOTTOM:
return Gravity.BOTTOM;
case UNRECOGNIZED:
case VERTICAL_ALIGN_UNDEFINED:
return VERTICAL_ALIGN_DEFAULT_GRAVITY;
}
return VERTICAL_ALIGN_DEFAULT_GRAVITY;
}
@ArcLayout.LayoutParams.VerticalAlignment
private static int verticalAlignmentToArcVAlign(VerticalAlignmentProp alignment) {
switch (alignment.getValue()) {
case VERTICAL_ALIGN_TOP:
return ArcLayout.LayoutParams.VERTICAL_ALIGN_OUTER;
case VERTICAL_ALIGN_CENTER:
return ArcLayout.LayoutParams.VERTICAL_ALIGN_CENTER;
case VERTICAL_ALIGN_BOTTOM:
return ArcLayout.LayoutParams.VERTICAL_ALIGN_INNER;
case UNRECOGNIZED:
case VERTICAL_ALIGN_UNDEFINED:
return ARC_VERTICAL_ALIGN_DEFAULT;
}
return ARC_VERTICAL_ALIGN_DEFAULT;
}
private static ScaleType contentScaleModeToScaleType(ContentScaleMode contentScaleMode) {
switch (contentScaleMode) {
case CONTENT_SCALE_MODE_FIT:
return ScaleType.FIT_CENTER;
case CONTENT_SCALE_MODE_CROP:
return ScaleType.CENTER_CROP;
case CONTENT_SCALE_MODE_FILL_BOUNDS:
return ScaleType.FIT_XY;
case CONTENT_SCALE_MODE_UNDEFINED:
case UNRECOGNIZED:
return IMAGE_DEFAULT_SCALE_TYPE;
}
return IMAGE_DEFAULT_SCALE_TYPE;
}
private static int spanVerticalAlignmentToImgSpanAlignment(
SpanVerticalAlignmentProp alignment) {
switch (alignment.getValue()) {
case SPAN_VERTICAL_ALIGN_TEXT_BASELINE:
return ImageSpan.ALIGN_BASELINE;
case SPAN_VERTICAL_ALIGN_BOTTOM:
return ImageSpan.ALIGN_BOTTOM;
case SPAN_VERTICAL_ALIGN_UNDEFINED:
case UNRECOGNIZED:
return SPAN_VERTICAL_ALIGN_DEFAULT;
}
return SPAN_VERTICAL_ALIGN_DEFAULT;
}
/**
* Whether a font style is bold or not (has weight > 700). Note that this check is required,
* even if you are using an explicitly bold font (e.g. Roboto-Bold), as Typeface still needs to
* bold bit set to render properly.
*/
private static boolean isBold(FontStyle fontStyle) {
// Although this method could be a simple equality check against FONT_WEIGHT_BOLD, we list
// all current cases here so that this will become a compile time error as soon as a new
// FontWeight value is added to the schema. If this fails to build, then this means that an
// int typeface style is no longer enough to represent all FontWeight values and a
// customizable, per-weight text style must be introduced to TileRendererInternal to handle
// this. See b/176980535
switch (fontStyle.getWeight().getValue()) {
case FONT_WEIGHT_BOLD:
return true;
case FONT_WEIGHT_NORMAL:
case FONT_WEIGHT_MEDIUM:
case FONT_WEIGHT_UNDEFINED:
case UNRECOGNIZED:
return false;
}
return false;
}
private Typeface fontStyleToTypeface(FontStyle fontStyle) {
FontSet fonts = mBodyFontSet;
if (fontStyle.getVariant().getValue() == FontVariant.FONT_VARIANT_TITLE) {
fonts = mTitleFontSet;
}
switch (fontStyle.getWeight().getValue()) {
case FONT_WEIGHT_BOLD:
return fonts.mBoldFont;
case FONT_WEIGHT_MEDIUM:
return fonts.mMediumFont;
case FONT_WEIGHT_NORMAL:
case FONT_WEIGHT_UNDEFINED:
case UNRECOGNIZED:
return fonts.mNormalFont;
}
return fonts.mNormalFont;
}
private static int fontStyleToTypefaceStyle(FontStyle fontStyle) {
final boolean isBold = isBold(fontStyle);
final boolean isItalic = fontStyle.getItalic().getValue();
if (isBold && isItalic) {
return Typeface.BOLD_ITALIC;
} else if (isBold) {
return Typeface.BOLD;
} else if (isItalic) {
return Typeface.ITALIC;
} else {
return Typeface.NORMAL;
}
}
@SuppressWarnings("nullness")
private Typeface createTypeface(FontStyle fontStyle) {
return Typeface.create(fontStyleToTypeface(fontStyle), fontStyleToTypefaceStyle(fontStyle));
}
private static MetricAffectingSpan createTypefaceSpan(FontStyle fontStyle) {
return new StyleSpan(fontStyleToTypefaceStyle(fontStyle));
}
/**
* Returns whether or not the default style bits in Typeface can be used, or if we need to add
* bold/italic flags there.
*/
private static boolean hasDefaultTypefaceStyle(FontStyle fontStyle) {
return !fontStyle.getItalic().getValue() && !isBold(fontStyle);
}
private float toPx(SpProp spField) {
return TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_SP,
spField.getValue(),
mUiContext.getResources().getDisplayMetrics());
}
private void applyFontStyle(FontStyle style, TextView textView) {
// Note: Underline must be applied as a Span to work correctly (as opposed to using
// TextPaint#setTextUnderline). This is applied in the caller instead.
// Need to supply typefaceStyle when creating the typeface (will select specialist
// bold/italic typefaces), *and* when setting the typeface (will set synthetic bold/italic
// flags in Paint if they're not supported by the given typeface).
textView.setTypeface(createTypeface(style), fontStyleToTypefaceStyle(style));
if (style.hasSize()) {
textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, style.getSize().getValue());
}
if (style.hasLetterSpacing()) {
textView.setLetterSpacing(style.getLetterSpacing().getValue());
}
textView.setTextColor(extractTextColorArgb(style));
}
private void applyFontStyle(FontStyle style, CurvedTextView textView) {
// Need to supply typefaceStyle when creating the typeface (will select specialist
// bold/italic typefaces), *and* when setting the typeface (will set synthetic bold/italic
// flags in Paint if they're not supported by the given typeface).
textView.setTypeface(createTypeface(style), fontStyleToTypefaceStyle(style));
// TODO(b/188801917): Implement underline. CurvedTextView (well, drawTextOnArc) doesn't
// support underline. We can implement this later by drawing a line under the text ourselves
// though.
if (style.hasSize()) {
textView.setTextSize(toPx(style.getSize()));
}
}
void dispatchLaunchActionIntent(Intent i) {
ActivityInfo ai = i.resolveActivityInfo(mUiContext.getPackageManager(), /* flags= */ 0);
if (ai != null && ai.exported && (ai.permission == null || ai.permission.isEmpty())) {
mUiContext.startActivity(i);
}
}
private void applyClickable(View view, Clickable clickable) {
view.setTag(clickable.getId());
boolean hasAction = false;
switch (clickable.getOnClick().getValueCase()) {
case LAUNCH_ACTION:
Intent i =
buildLaunchActionIntent(
clickable.getOnClick().getLaunchAction(), clickable.getId());
if (i != null) {
hasAction = true;
view.setOnClickListener(
v -> {
i.setSourceBounds(getSourceBounds(view));
dispatchLaunchActionIntent(i);
});
}
break;
case LOAD_ACTION:
hasAction = true;
view.setOnClickListener(
v ->
mLoadActionExecutor.execute(
() ->
mLoadActionListener.onClick(
buildState(
clickable
.getOnClick()
.getLoadAction(),
clickable.getId()))));
break;
case VALUE_NOT_SET:
break;
}
if (hasAction) {
// Apply ripple effect
TypedValue outValue = new TypedValue();
mUiContext
.getTheme()
.resolveAttribute(
android.R.attr.selectableItemBackground,
outValue,
/* resolveRefs= */ true);
view.setForeground(mUiContext.getDrawable(outValue.resourceId));
}
}
private void applyPadding(View view, Padding padding) {
if (padding.getRtlAware().getValue()) {
view.setPaddingRelative(
safeDpToPx(padding.getStart()),
safeDpToPx(padding.getTop()),
safeDpToPx(padding.getEnd()),
safeDpToPx(padding.getBottom()));
} else {
view.setPadding(
safeDpToPx(padding.getStart()),
safeDpToPx(padding.getTop()),
safeDpToPx(padding.getEnd()),
safeDpToPx(padding.getBottom()));
}
}
private GradientDrawable applyBackground(
View view, Background background, @Nullable GradientDrawable drawable) {
if (drawable == null) {
drawable = new GradientDrawable();
}
if (background.hasColor()) {
drawable.setColor(background.getColor().getArgb());
}
if (background.hasCorner()) {
drawable.setCornerRadius(safeDpToPx(background.getCorner().getRadius()));
view.setClipToOutline(true);
view.setOutlineProvider(ViewOutlineProvider.BACKGROUND);
}
return drawable;
}
private GradientDrawable applyBorder(Border border, @Nullable GradientDrawable drawable) {
if (drawable == null) {
drawable = new GradientDrawable();
}
drawable.setStroke(safeDpToPx(border.getWidth()), border.getColor().getArgb());
return drawable;
}
private View applyModifiers(View view, Modifiers modifiers) {
if (modifiers.hasClickable()) {
applyClickable(view, modifiers.getClickable());
}
if (modifiers.hasSemantics()) {
applyAudibleParams(view, modifiers.getSemantics().getContentDescription());
}
if (modifiers.hasPadding()) {
applyPadding(view, modifiers.getPadding());
}
GradientDrawable backgroundDrawable = null;
if (modifiers.hasBackground()) {
backgroundDrawable =
applyBackground(view, modifiers.getBackground(), backgroundDrawable);
}
if (modifiers.hasBorder()) {
backgroundDrawable = applyBorder(modifiers.getBorder(), backgroundDrawable);
}
if (backgroundDrawable != null) {
view.setBackground(backgroundDrawable);
}
return view;
}
// This is a little nasty; ArcLayout.Widget is just an interface, so we have no guarantee that
// the instance also extends View (as it should). Instead, just take a View in and rename this,
// and check that it's an ArcLayout.Widget internally.
private View applyModifiersToArcLayoutView(View view, ArcModifiers modifiers) {
if (!(view instanceof ArcLayout.Widget)) {
Log.e(
TAG,
"applyModifiersToArcLayoutView should only be called with an ArcLayout.Widget");
return view;
}
if (modifiers.hasClickable()) {
applyClickable(view, modifiers.getClickable());
}
if (modifiers.hasSemantics()) {
applyAudibleParams(view, modifiers.getSemantics().getContentDescription());
}
return view;
}
private static int textAlignToAndroidGravity(TextAlignmentProp alignment) {
switch (alignment.getValue()) {
case TEXT_ALIGN_START:
return Gravity.START;
case TEXT_ALIGN_CENTER:
return Gravity.CENTER_HORIZONTAL;
case TEXT_ALIGN_END:
return Gravity.END;
case TEXT_ALIGN_UNDEFINED:
case UNRECOGNIZED:
return TEXT_ALIGN_DEFAULT;
}
return TEXT_ALIGN_DEFAULT;
}
@Nullable
private static TruncateAt textTruncationToEllipsize(TextOverflowProp type) {
switch (type.getValue()) {
case TEXT_OVERFLOW_TRUNCATE:
// A null TruncateAt disables adding an ellipsis.
return null;
case TEXT_OVERFLOW_ELLIPSIZE_END:
return TruncateAt.END;
case TEXT_OVERFLOW_UNDEFINED:
case UNRECOGNIZED:
return TEXT_OVERFLOW_DEFAULT;
}
return TEXT_OVERFLOW_DEFAULT;
}
@ArcLayout.AnchorType
private static int anchorTypeToAnchorPos(ArcAnchorTypeProp type) {
switch (type.getValue()) {
case ARC_ANCHOR_START:
return ArcLayout.ANCHOR_START;
case ARC_ANCHOR_CENTER:
return ArcLayout.ANCHOR_CENTER;
case ARC_ANCHOR_END:
return ArcLayout.ANCHOR_END;
case ARC_ANCHOR_UNDEFINED:
case UNRECOGNIZED:
return ARC_ANCHOR_DEFAULT;
}
return ARC_ANCHOR_DEFAULT;
}
private int dimensionToPx(ContainerDimension containerDimension) {
switch (containerDimension.getInnerCase()) {
case LINEAR_DIMENSION:
return safeDpToPx(containerDimension.getLinearDimension());
case EXPANDED_DIMENSION:
return LayoutParams.MATCH_PARENT;
case WRAPPED_DIMENSION:
return LayoutParams.WRAP_CONTENT;
case INNER_NOT_SET:
return dimensionToPx(CONTAINER_DIMENSION_DEFAULT);
}
return dimensionToPx(CONTAINER_DIMENSION_DEFAULT);
}
private static int extractTextColorArgb(FontStyle fontStyle) {
if (fontStyle.hasColor()) {
return fontStyle.getColor().getArgb();
} else {
return TEXT_COLOR_DEFAULT;
}
}
/**
* Returns an Android {@link Intent} that can perform the action defined in the given tile
* {@link LaunchAction}.
*/
@Nullable
public static Intent buildLaunchActionIntent(
@NonNull LaunchAction launchAction, @NonNull String clickableId) {
if (launchAction.hasAndroidActivity()) {
AndroidActivity activity = launchAction.getAndroidActivity();
Intent i =
new Intent().setClassName(activity.getPackageName(), activity.getClassName());
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if (!clickableId.isEmpty()) {
i.putExtra(TileService.EXTRA_CLICKABLE_ID, clickableId);
}
for (Map.Entry<String, AndroidExtra> entry : activity.getKeyToExtraMap().entrySet()) {
if (entry.getValue().hasStringVal()) {
i.putExtra(entry.getKey(), entry.getValue().getStringVal().getValue());
} else if (entry.getValue().hasIntVal()) {
i.putExtra(entry.getKey(), entry.getValue().getIntVal().getValue());
} else if (entry.getValue().hasLongVal()) {
i.putExtra(entry.getKey(), entry.getValue().getLongVal().getValue());
} else if (entry.getValue().hasDoubleVal()) {
i.putExtra(entry.getKey(), entry.getValue().getDoubleVal().getValue());
} else if (entry.getValue().hasBooleanVal()) {
i.putExtra(entry.getKey(), entry.getValue().getBooleanVal().getValue());
}
}
return i;
}
return null;
}
static State buildState(LoadAction loadAction, String clickableId) {
// Get the state specified by the provider and add the last clicked clickable's ID to it.
return loadAction.getRequestState().toBuilder().setLastClickableId(clickableId).build();
}
@Nullable
private View inflateColumn(ViewGroup parent, Column column) {
ContainerDimension width =
column.hasWidth() ? column.getWidth() : CONTAINER_DIMENSION_DEFAULT;
ContainerDimension height =
column.hasHeight() ? column.getHeight() : CONTAINER_DIMENSION_DEFAULT;
if (!canMeasureContainer(width, height, column.getContentsList())) {
Log.w(TAG, "Column set to wrap but contents are unmeasurable. Ignoring.");
return null;
}
LinearLayout linearLayout = new LinearLayout(mUiContext);
linearLayout.setOrientation(LinearLayout.VERTICAL);
LayoutParams layoutParams = generateDefaultLayoutParams();
linearLayout.setGravity(horizontalAlignmentToGravity(column.getHorizontalAlignment()));
layoutParams = updateLayoutParams(parent, layoutParams, width, height);
View wrappedView = applyModifiers(linearLayout, column.getModifiers());
parent.addView(wrappedView, layoutParams);
inflateLayoutElements(linearLayout, column.getContentsList());
return wrappedView;
}
@Nullable
private View inflateRow(ViewGroup parent, Row row) {
ContainerDimension width = row.hasWidth() ? row.getWidth() : CONTAINER_DIMENSION_DEFAULT;
ContainerDimension height = row.hasHeight() ? row.getHeight() : CONTAINER_DIMENSION_DEFAULT;
if (!canMeasureContainer(width, height, row.getContentsList())) {
Log.w(TAG, "Row set to wrap but contents are unmeasurable. Ignoring.");
return null;
}
LinearLayout linearLayout = new LinearLayout(mUiContext);
linearLayout.setOrientation(LinearLayout.HORIZONTAL);
LayoutParams layoutParams = generateDefaultLayoutParams();
linearLayout.setGravity(verticalAlignmentToGravity(row.getVerticalAlignment()));
layoutParams = updateLayoutParams(parent, layoutParams, width, height);
View wrappedView = applyModifiers(linearLayout, row.getModifiers());
parent.addView(wrappedView, layoutParams);
inflateLayoutElements(linearLayout, row.getContentsList());
return wrappedView;
}
@Nullable
private View inflateBox(ViewGroup parent, Box box) {
ContainerDimension width = box.hasWidth() ? box.getWidth() : CONTAINER_DIMENSION_DEFAULT;
ContainerDimension height = box.hasHeight() ? box.getHeight() : CONTAINER_DIMENSION_DEFAULT;
if (!canMeasureContainer(width, height, box.getContentsList())) {
Log.w(TAG, "Box set to wrap but contents are unmeasurable. Ignoring.");
return null;
}
FrameLayout frame = new FrameLayout(mUiContext);
LayoutParams layoutParams = generateDefaultLayoutParams();
layoutParams = updateLayoutParams(parent, layoutParams, width, height);
int gravity =
horizontalAlignmentToGravity(box.getHorizontalAlignment())
| verticalAlignmentToGravity(box.getVerticalAlignment());
View wrappedView = applyModifiers(frame, box.getModifiers());
parent.addView(wrappedView, layoutParams);
inflateLayoutElements(frame, box.getContentsList());
// We can't set layout gravity to a FrameLayout ahead of time (and foregroundGravity only
// sets the gravity of the foreground Drawable). Go and apply gravity to the child.
applyGravityToFrameLayoutChildren(frame, gravity);
// HACK: FrameLayout has a bug in it. If we add one WRAP_CONTENT child, and one MATCH_PARENT
// child, the expected behaviour is that the FrameLayout sizes itself to fit the
// WRAP_CONTENT child (e.g. a TextView), then the MATCH_PARENT child is forced to the same
// size as the outer FrameLayout (and hence, the size of the TextView, after accounting for
// padding etc). Because of a bug though, this doesn't happen; instead, the MATCH_PARENT
// child will just keep its intrinsic size. This is because FrameLayout only forces
// MATCH_PARENT children to a given size if there are _more than one_ of them (see the
// bottom of FrameLayout#onMeasure).
//
// To work around this (without copying the whole of FrameLayout just to change a "1" to
// "0"), we add a Space element in if there is one MATCH_PARENT child. This has a tiny cost
// to the measure pass, and negligible cost to layout/draw (since it doesn't take part in
// those passes).
int numMatchParentChildren = 0;
for (int i = 0; i < frame.getChildCount(); i++) {
LayoutParams lp = frame.getChildAt(i).getLayoutParams();
if (lp.width == LayoutParams.MATCH_PARENT || lp.height == LayoutParams.MATCH_PARENT) {
numMatchParentChildren++;
}
}
if (numMatchParentChildren == 1) {
Space hackSpace = new Space(mUiContext);
LayoutParams hackSpaceLp =
new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
frame.addView(hackSpace, hackSpaceLp);
}
return wrappedView;
}
@Nullable
private View inflateSpacer(ViewGroup parent, Spacer spacer) {
int widthPx = safeDpToPx(spacer.getWidth().getLinearDimension());
int heightPx = safeDpToPx(spacer.getHeight().getLinearDimension());
if (widthPx == 0 && heightPx == 0) {
return null;
}
LayoutParams layoutParams = generateDefaultLayoutParams();
// Modifiers cannot be applied to android's Space, so use a plain View if this Spacer has
// modifiers.
View view;
if (spacer.hasModifiers()) {
view = applyModifiers(new View(mUiContext), spacer.getModifiers());
layoutParams =
updateLayoutParams(
parent,
layoutParams,
spacerDimensionToContainerDimension(spacer.getWidth()),
spacerDimensionToContainerDimension(spacer.getHeight()));
} else {
view = new Space(mUiContext);
view.setMinimumWidth(widthPx);
view.setMinimumHeight(heightPx);
}
parent.addView(view, layoutParams);
return view;
}
@Nullable
private View inflateArcSpacer(ViewGroup parent, ArcSpacer spacer) {
float lengthDegrees = max(0, spacer.getLength().getValue());
int thicknessPx = safeDpToPx(spacer.getThickness());
if (lengthDegrees == 0 && thicknessPx == 0) {
return null;
}
WearCurvedSpacer space = new WearCurvedSpacer(mUiContext);
LayoutParams layoutParams = generateDefaultLayoutParams();
space.setSweepAngleDegrees(lengthDegrees);
space.setThickness(thicknessPx);
View wrappedView = applyModifiersToArcLayoutView(space, spacer.getModifiers());
parent.addView(wrappedView, layoutParams);
return wrappedView;
}
private View inflateText(ViewGroup parent, Text text) {
TextView textView =
new TextView(mUiContext, /* attrs= */ null, R.attr.tilesFallbackTextAppearance);
LayoutParams layoutParams = generateDefaultLayoutParams();
// Underlines are applied using a Spannable here, rather than setting paint bits (or using
// Paint#setTextUnderline). When multiple fonts are mixed on the same line (especially when
// mixing anything with NotoSans-CJK), multiple underlines can appear. Using UnderlineSpan
// instead though causes the correct behaviour to happen (only a single underline).
SpannableStringBuilder ssb = new SpannableStringBuilder();
ssb.append(text.getText().getValue());
if (text.getFontStyle().getUnderline().getValue()) {
ssb.setSpan(new UnderlineSpan(), 0, ssb.length(), Spanned.SPAN_MARK_MARK);
}
textView.setText(ssb);
textView.setEllipsize(textTruncationToEllipsize(text.getOverflow()));
textView.setGravity(textAlignToAndroidGravity(text.getMultilineAlignment()));
if (text.hasMaxLines()) {
textView.setMaxLines(max(TEXT_MIN_LINES, text.getMaxLines().getValue()));
} else {
textView.setMaxLines(TEXT_MAX_LINES_DEFAULT);
}
// Setting colours **must** go after setting the Text Appearance, otherwise it will get
// immediately overridden.
if (text.hasFontStyle()) {
applyFontStyle(text.getFontStyle(), textView);
} else {
applyFontStyle(FontStyle.getDefaultInstance(), textView);
}
if (text.hasLineHeight()) {
float lineHeightPx = toPx(text.getLineHeight());
final float fontHeightPx = textView.getPaint().getFontSpacing();
if (lineHeightPx != fontHeightPx) {
textView.setLineSpacing(lineHeightPx - fontHeightPx, 1f);
}
}
// We don't want the text to be screen-reader focusable, unless wrapped in a Semantics
// modifier. This prevents automatically reading out partial text (e.g. text in a row) etc.
//
// This **must** be done before applying modifiers; applying a Semantics modifier will set
// importantForAccessibility, so we don't want to override it after applying modifiers.
textView.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_NO);
View wrappedView = applyModifiers(textView, text.getModifiers());
parent.addView(wrappedView, layoutParams);
return wrappedView;
}
private View inflateArcText(ViewGroup parent, ArcText text) {
CurvedTextView textView =
new CurvedTextView(
mUiContext, /* attrs= */ null, R.attr.tilesFallbackTextAppearance);
LayoutParams layoutParams = generateDefaultLayoutParams();
layoutParams.width = LayoutParams.MATCH_PARENT;
layoutParams.height = LayoutParams.MATCH_PARENT;
textView.setText(text.getText().getValue());
if (text.hasFontStyle()) {
applyFontStyle(text.getFontStyle(), textView);
}
textView.setTextColor(extractTextColorArgb(text.getFontStyle()));
View wrappedView = applyModifiersToArcLayoutView(textView, text.getModifiers());
parent.addView(wrappedView, layoutParams);
return wrappedView;
}
private static boolean isZeroLengthImageDimension(ImageDimension dimension) {
return dimension.getInnerCase() == ImageDimension.InnerCase.LINEAR_DIMENSION
&& dimension.getLinearDimension().getValue() == 0;
}
private static ContainerDimension imageDimensionToContainerDimension(ImageDimension dimension) {
switch (dimension.getInnerCase()) {
case LINEAR_DIMENSION:
return ContainerDimension.newBuilder()
.setLinearDimension(dimension.getLinearDimension())
.build();
case EXPANDED_DIMENSION:
return ContainerDimension.newBuilder()
.setExpandedDimension(ExpandedDimensionProp.getDefaultInstance())
.build();
case PROPORTIONAL_DIMENSION:
// A ratio size should be translated to a WRAP_CONTENT; the RatioViewWrapper will
// deal with the sizing of that.
return ContainerDimension.newBuilder()
.setWrappedDimension(WrappedDimensionProp.getDefaultInstance())
.build();
case INNER_NOT_SET:
break;
}
// Caller should have already checked for this.
throw new IllegalArgumentException(
"ImageDimension has an unknown dimension type: " + dimension.getInnerCase().name());
}
private static ContainerDimension spacerDimensionToContainerDimension(
SpacerDimension dimension) {
switch (dimension.getInnerCase()) {
case LINEAR_DIMENSION:
return ContainerDimension.newBuilder()
.setLinearDimension(dimension.getLinearDimension())
.build();
case INNER_NOT_SET:
// A spacer is allowed to have missing dimension and this should be considered as
// 0dp.
return ContainerDimension.newBuilder()
.setLinearDimension(DpProp.getDefaultInstance())
.build();
}
// Caller should have already checked for this.
throw new IllegalArgumentException(
"SpacerDimension has an unknown dimension type: "
+ dimension.getInnerCase().name());
}
@SuppressWarnings("ExecutorTaskName")
@Nullable
private View inflateImage(ViewGroup parent, Image image) {
String protoResId = image.getResourceId().getValue();
// If either width or height isn't set, abort.
if (image.getWidth().getInnerCase() == ImageDimension.InnerCase.INNER_NOT_SET
|| image.getHeight().getInnerCase() == ImageDimension.InnerCase.INNER_NOT_SET) {
Log.w(TAG, "One of width and height not set on image " + protoResId);
return null;
}
// The image must occupy _some_ space.
if (isZeroLengthImageDimension(image.getWidth())
|| isZeroLengthImageDimension(image.getHeight())) {
Log.w(TAG, "One of width and height was zero on image " + protoResId);
return null;
}
// Both dimensions can't be ratios.
if (image.getWidth().getInnerCase() == ImageDimension.InnerCase.PROPORTIONAL_DIMENSION
&& image.getHeight().getInnerCase()
== ImageDimension.InnerCase.PROPORTIONAL_DIMENSION) {
Log.w(TAG, "Both width and height were proportional for image " + protoResId);
return null;
}
// Pull the ratio for the RatioViewWrapper. Was either argument a proportional dimension?
@Nullable Float ratio = RatioViewWrapper.UNDEFINED_ASPECT_RATIO;
if (image.getWidth().getInnerCase() == ImageDimension.InnerCase.PROPORTIONAL_DIMENSION) {
ratio = safeAspectRatioOrNull(image.getWidth().getProportionalDimension());
}
if (image.getHeight().getInnerCase() == ImageDimension.InnerCase.PROPORTIONAL_DIMENSION) {
ratio = safeAspectRatioOrNull(image.getHeight().getProportionalDimension());
}
if (ratio == null) {
Log.w(TAG, "Invalid aspect ratio for image " + protoResId);
return null;
}
ImageViewWithoutIntrinsicSizes imageView = new ImageViewWithoutIntrinsicSizes(mUiContext);
if (image.hasContentScaleMode()) {
imageView.setScaleType(
contentScaleModeToScaleType(image.getContentScaleMode().getValue()));
}
if (image.getWidth().getInnerCase() == ImageDimension.InnerCase.LINEAR_DIMENSION) {
imageView.setMinimumWidth(safeDpToPx(image.getWidth().getLinearDimension()));
}
if (image.getHeight().getInnerCase() == ImageDimension.InnerCase.LINEAR_DIMENSION) {
imageView.setMinimumHeight(safeDpToPx(image.getHeight().getLinearDimension()));
}
// We need to sort out the sizing of the widget now, so we can pass the correct params to
// RatioViewWrapper. First, translate the ImageSize to a ContainerSize. A ratio size should
// be translated to a WRAP_CONTENT; the RatioViewWrapper will deal with the sizing of that.
LayoutParams ratioWrapperLayoutParams = generateDefaultLayoutParams();
ratioWrapperLayoutParams =
updateLayoutParams(
parent,
ratioWrapperLayoutParams,
imageDimensionToContainerDimension(image.getWidth()),
imageDimensionToContainerDimension(image.getHeight()));
RatioViewWrapper ratioViewWrapper = new RatioViewWrapper(mUiContext);
ratioViewWrapper.setAspectRatio(ratio);
ratioViewWrapper.addView(imageView);
// Finally, wrap the image in any modifiers...
View wrappedView = applyModifiers(ratioViewWrapper, image.getModifiers());
parent.addView(wrappedView, ratioWrapperLayoutParams);
ListenableFuture<Drawable> drawableFuture = mResourceResolvers.getDrawable(protoResId);
boolean isImageSet = false;
if (drawableFuture.isDone() && !drawableFuture.isCancelled()) {
// If the future is done, immediately draw.
isImageSet = setImageDrawable(imageView, drawableFuture, protoResId);
}
if (!isImageSet) {
// Is there a placeholder to use in the meantime?
try {
if (mResourceResolvers.hasPlaceholderDrawable(protoResId)) {
imageView.setImageDrawable(
mResourceResolvers.getPlaceholderDrawableOrThrow(protoResId));
}
} catch (ResourceAccessException | IllegalArgumentException ex) {
Log.e(TAG, "Exception loading placeholder for resource " + protoResId, ex);
}
// Otherwise, handle the result on the UI thread.
drawableFuture.addListener(
() -> setImageDrawable(imageView, drawableFuture, protoResId),
ContextCompat.getMainExecutor(mUiContext));
}
boolean canImageBeTinted = false;
try {
canImageBeTinted = mResourceResolvers.canImageBeTinted(protoResId);
} catch (IllegalArgumentException ex) {
// This implies that the image doesn't exist, but in that case, the above statement
// should have thrown.
Log.wtf(TAG, "Exception tinting image " + protoResId, ex);
}
if (image.hasFilter()) {
if (image.getFilter().hasTint() && canImageBeTinted) {
// Only allow tinting for Android images.
ColorStateList tint = ColorStateList.valueOf(image.getFilter().getTint().getArgb());
imageView.setImageTintList(tint);
// SRC_IN throws away the colours in the drawable that we're tinting. Effectively,
// the drawable being tinted is only a mask to apply the colour to.
imageView.setImageTintMode(Mode.SRC_IN);
}
}
return wrappedView;
}
private static boolean setImageDrawable(
ImageView imageView, Future<Drawable> drawableFuture, String protoResId) {
try {
imageView.setImageDrawable(drawableFuture.get());
return true;
} catch (ExecutionException | InterruptedException e) {
Log.w(TAG, "Could not get drawable for image " + protoResId);
}
return false;
}
@Nullable
private View inflateArcLine(ViewGroup parent, ArcLine line) {
float lengthDegrees = max(0, line.getLength().getValue());
int thicknessPx = safeDpToPx(line.getThickness());
if (lengthDegrees == 0 && thicknessPx == 0) {
return null;
}
WearCurvedLineView lineView = new WearCurvedLineView(mUiContext);
// A ArcLineView must always be the same width/height as its parent, so it can draw the line
// properly inside of those bounds.
LayoutParams layoutParams = generateDefaultLayoutParams();
layoutParams.width = LayoutParams.MATCH_PARENT;
layoutParams.height = LayoutParams.MATCH_PARENT;
int lineColor = LINE_COLOR_DEFAULT;
if (line.hasColor()) {
lineColor = line.getColor().getArgb();
}
lineView.setThickness(thicknessPx);
lineView.setSweepAngleDegrees(lengthDegrees);
lineView.setColor(lineColor);
View wrappedView = applyModifiersToArcLayoutView(lineView, line.getModifiers());
parent.addView(wrappedView, layoutParams);
return wrappedView;
}
@Nullable
private View inflateArc(ViewGroup parent, Arc arc) {
ArcLayout arcLayout = new ArcLayout(mUiContext);
LayoutParams layoutParams = generateDefaultLayoutParams();
layoutParams.width = LayoutParams.MATCH_PARENT;
layoutParams.height = LayoutParams.MATCH_PARENT;
arcLayout.setAnchorAngleDegrees(arc.getAnchorAngle().getValue());
arcLayout.setAnchorType(anchorTypeToAnchorPos(arc.getAnchorType()));
// Add all children.
for (ArcLayoutElement child : arc.getContentsList()) {
@Nullable View childView = inflateArcLayoutElement(arcLayout, child);
if (childView != null) {
ArcLayout.LayoutParams childLayoutParams =
(ArcLayout.LayoutParams) childView.getLayoutParams();
boolean rotate = false;
if (child.hasAdapter()) {
rotate = child.getAdapter().getRotateContents().getValue();
}
// Apply rotation and gravity.
childLayoutParams.setRotated(rotate);
childLayoutParams.setVerticalAlignment(
verticalAlignmentToArcVAlign(arc.getVerticalAlign()));
}
}
View wrappedView = applyModifiers(arcLayout, arc.getModifiers());
parent.addView(wrappedView, layoutParams);
return wrappedView;
}
private void applyStylesToSpan(
SpannableStringBuilder builder, int start, int end, FontStyle fontStyle) {
if (fontStyle.hasSize()) {
AbsoluteSizeSpan span = new AbsoluteSizeSpan(round(toPx(fontStyle.getSize())));
builder.setSpan(span, start, end, Spanned.SPAN_MARK_MARK);
}
if (fontStyle.hasWeight() || fontStyle.hasVariant()) {
CustomTypefaceSpan span = new CustomTypefaceSpan(fontStyleToTypeface(fontStyle));
builder.setSpan(span, start, end, Spanned.SPAN_MARK_MARK);
}
if (!hasDefaultTypefaceStyle(fontStyle)) {
MetricAffectingSpan span = createTypefaceSpan(fontStyle);
builder.setSpan(span, start, end, Spanned.SPAN_MARK_MARK);
}
if (fontStyle.getUnderline().getValue()) {
UnderlineSpan span = new UnderlineSpan();
builder.setSpan(span, start, end, Spanned.SPAN_MARK_MARK);
}
if (fontStyle.hasLetterSpacing()) {
LetterSpacingSpan span = new LetterSpacingSpan(fontStyle.getLetterSpacing().getValue());
builder.setSpan(span, start, end, Spanned.SPAN_MARK_MARK);
}
ForegroundColorSpan colorSpan;
colorSpan = new ForegroundColorSpan(extractTextColorArgb(fontStyle));
builder.setSpan(colorSpan, start, end, Spanned.SPAN_MARK_MARK);
}
private void applyModifiersToSpan(
SpannableStringBuilder builder, int start, int end, SpanModifiers modifiers) {
if (modifiers.hasClickable()) {
ClickableSpan clickableSpan = new TilesClickableSpan(modifiers.getClickable());
builder.setSpan(clickableSpan, start, end, Spanned.SPAN_MARK_MARK);
}
}
private SpannableStringBuilder inflateTextInSpannable(
SpannableStringBuilder builder, SpanText text) {
int currentPos = builder.length();
int lastPos = currentPos + text.getText().getValue().length();
builder.append(text.getText().getValue());
applyStylesToSpan(builder, currentPos, lastPos, text.getFontStyle());
applyModifiersToSpan(builder, currentPos, lastPos, text.getModifiers());
return builder;
}
@SuppressWarnings("ExecutorTaskName")
private SpannableStringBuilder inflateImageInSpannable(
SpannableStringBuilder builder, SpanImage protoImage, TextView textView) {
String protoResId = protoImage.getResourceId().getValue();
if (protoImage.getWidth().getValue() == 0 || protoImage.getHeight().getValue() == 0) {
Log.w(TAG, "One of width and height was zero on image " + protoResId);
return builder;
}
ListenableFuture<Drawable> drawableFuture = mResourceResolvers.getDrawable(protoResId);
if (drawableFuture.isDone()) {
// If the future is done, immediately add drawable to builder.
try {
Drawable drawable = drawableFuture.get();
appendSpanDrawable(builder, drawable, protoImage);
} catch (ExecutionException | InterruptedException e) {
Log.w(
TAG,
"Could not get drawable for image "
+ protoImage.getResourceId().getValue());
}
} else {
// If the future is not done, add an empty drawable to builder as a placeholder.
@Nullable Drawable placeholderDrawable = null;
try {
if (mResourceResolvers.hasPlaceholderDrawable(protoResId)) {
placeholderDrawable =
mResourceResolvers.getPlaceholderDrawableOrThrow(protoResId);
}
} catch (ResourceAccessException ex) {
Log.e(TAG, "Could not get placeholder for image " + protoResId, ex);
}
if (placeholderDrawable == null) {
placeholderDrawable = new ColorDrawable(Color.TRANSPARENT);
}
int startInclusive = builder.length();
FixedImageSpan placeholderDrawableSpan =
appendSpanDrawable(builder, placeholderDrawable, protoImage);
int endExclusive = builder.length();
// When the future is done, replace the empty drawable with the received one.
drawableFuture.addListener(
() -> {
// Remove the placeholder. This should be safe, even with other modifiers
// applied. This just removes the single drawable span, and should leave
// other spans in place.
builder.removeSpan(placeholderDrawableSpan);
// Add the new drawable to the same range.
setSpanDrawable(
builder, drawableFuture, startInclusive, endExclusive, protoImage);
// Update the TextView.
textView.setText(builder);
},
ContextCompat.getMainExecutor(mUiContext));
}
return builder;
}
private FixedImageSpan appendSpanDrawable(
SpannableStringBuilder builder, Drawable drawable, SpanImage protoImage) {
drawable.setBounds(
0, 0, safeDpToPx(protoImage.getWidth()), safeDpToPx(protoImage.getHeight()));
FixedImageSpan imgSpan =
new FixedImageSpan(
drawable,
spanVerticalAlignmentToImgSpanAlignment(protoImage.getAlignment()));
int startPos = builder.length();
// Note, we need to replace a real character, not a space. Spaces at the end of a line are
// trimmed, which means that some image spans can be removed from the Span if they end up
// being located at the end of a line.
builder.append("A", imgSpan, Spanned.SPAN_MARK_MARK);
int endPos = builder.length();
applyModifiersToSpan(builder, startPos, endPos, protoImage.getModifiers());
return imgSpan;
}
private void setSpanDrawable(
SpannableStringBuilder builder,
ListenableFuture<Drawable> drawableFuture,
int startInclusive,
int endExclusive,
SpanImage protoImage) {
final String protoResourceId = protoImage.getResourceId().getValue();
try {
// Add the image span to the same range occupied by the placeholder.
Drawable drawable = drawableFuture.get();
drawable.setBounds(
0, 0, safeDpToPx(protoImage.getWidth()), safeDpToPx(protoImage.getHeight()));
FixedImageSpan imgSpan =
new FixedImageSpan(
drawable,
spanVerticalAlignmentToImgSpanAlignment(protoImage.getAlignment()));
builder.setSpan(
imgSpan,
startInclusive,
endExclusive,
android.text.Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
} catch (ExecutionException | InterruptedException e) {
Log.w(TAG, "Could not get drawable for image " + protoResourceId);
}
}
private View inflateSpannable(ViewGroup parent, Spannable spannable) {
TextView tv =
new TextView(mUiContext, /* attrs= */ null, R.attr.tilesFallbackTextAppearance);
LayoutParams layoutParams = generateDefaultLayoutParams();
SpannableStringBuilder builder = new SpannableStringBuilder();
boolean isAnySpanClickable = false;
for (Span element : spannable.getSpansList()) {
switch (element.getInnerCase()) {
case IMAGE:
SpanImage protoImage = element.getImage();
builder = inflateImageInSpannable(builder, protoImage, tv);
if (protoImage.getModifiers().hasClickable()) {
isAnySpanClickable = true;
}
break;
case TEXT:
SpanText protoText = element.getText();
builder = inflateTextInSpannable(builder, protoText);
if (protoText.getModifiers().hasClickable()) {
isAnySpanClickable = true;
}
break;
default:
Log.w(TAG, "Unknown Span child type.");
break;
}
}
tv.setEllipsize(textTruncationToEllipsize(spannable.getOverflow()));
tv.setGravity(horizontalAlignmentToGravity(spannable.getMultilineAlignment()));
if (spannable.hasMaxLines()) {
tv.setMaxLines(max(TEXT_MIN_LINES, spannable.getMaxLines().getValue()));
} else {
tv.setMaxLines(TEXT_MAX_LINES_DEFAULT);
}
if (spannable.hasLineHeight()) {
// We use a Span here instead of just calling TextViewCompat#setLineHeight.
// setLineHeight is implemented by taking the difference between the current font height
// (via the font metrics, not just the size in SP), subtracting that from the desired
// line height, and setting that as the inter-line spacing. This doesn't work for our
// Spannables; we don't use a default height, yet TextView still has a default font (and
// size) that it tries to base the requested line height on, despite that never actually
// being used. The end result is that the line height never actually drops out as
// expected.
//
// Instead, wrap the whole thing in a LineHeightSpan with the desired line height. This
// gets calculated properly as the TextView is calculating its per-line font metrics,
// and will actually work correctly.
StandardLineHeightSpan span =
new StandardLineHeightSpan((int) toPx(spannable.getLineHeight()));
builder.setSpan(
span,
/* start= */ 0,
/* end= */ builder.length(),
Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
} else if (spannable.hasLineSpacing()) {
tv.setLineSpacing(toPx(spannable.getLineSpacing()), 1f);
}
tv.setText(builder);
if (isAnySpanClickable) {
// For any ClickableSpans to work, the MovementMethod must be set to LinkMovementMethod.
tv.setMovementMethod(LinkMovementMethod.getInstance());
// Disable the highlight color; if we don't do this, the clicked span will get
// highlighted, which will be cleared half a second later if using LoadAction as the
// next layout will be delivered, which recreates the elements and clears the highlight.
tv.setHighlightColor(Color.TRANSPARENT);
// Use InhibitingScroller to prevent the text from scrolling when tapped. Setting a
// MovementMethod on a TextView (e.g. for clickables in a Spannable) then cause the
// TextView to be scrollable, and to jump to the end when tapped.
tv.setScroller(new InhibitingScroller(mUiContext));
}
View wrappedView = applyModifiers(tv, spannable.getModifiers());
parent.addView(wrappedView, layoutParams);
return wrappedView;
}
@Nullable
private View inflateArcLayoutElement(ViewGroup parent, ArcLayoutElement element) {
View inflatedView = null;
switch (element.getInnerCase()) {
case ADAPTER:
// Fall back to the normal inflater.
inflatedView = inflateLayoutElement(parent, element.getAdapter().getContent());
break;
case SPACER:
inflatedView = inflateArcSpacer(parent, element.getSpacer());
break;
case LINE:
inflatedView = inflateArcLine(parent, element.getLine());
break;
case TEXT:
inflatedView = inflateArcText(parent, element.getText());
break;
case INNER_NOT_SET:
break;
}
if (inflatedView == null) {
// Covers null (returned when the childCase in the proto isn't known). Sadly, ProtoLite
// doesn't give us a way to access childCase's underlying tag, so we can't give any
// smarter error message here.
Log.w(TAG, "Unknown child type");
}
return inflatedView;
}
@Nullable
private View inflateLayoutElement(ViewGroup parent, LayoutElement element) {
// What is it?
View inflatedView = null;
switch (element.getInnerCase()) {
case COLUMN:
inflatedView = inflateColumn(parent, element.getColumn());
break;
case ROW:
inflatedView = inflateRow(parent, element.getRow());
break;
case BOX:
inflatedView = inflateBox(parent, element.getBox());
break;
case SPACER:
inflatedView = inflateSpacer(parent, element.getSpacer());
break;
case TEXT:
inflatedView = inflateText(parent, element.getText());
break;
case IMAGE:
inflatedView = inflateImage(parent, element.getImage());
break;
case ARC:
inflatedView = inflateArc(parent, element.getArc());
break;
case SPANNABLE:
inflatedView = inflateSpannable(parent, element.getSpannable());
break;
case INNER_NOT_SET:
default: // TODO(b/178359365): Remove default case
Log.w(TAG, "Unknown child type: " + element.getInnerCase().name());
break;
}
return inflatedView;
}
private boolean canMeasureContainer(
ContainerDimension containerWidth,
ContainerDimension containerHeight,
List<LayoutElement> elements) {
// We can't measure a container if it's set to wrap-contents but all of its contents are set
// to expand-to-parent. Such containers must not be displayed.
if (containerWidth.hasWrappedDimension()
&& !containsMeasurableWidth(containerHeight, elements)) {
return false;
}
if (containerHeight.hasWrappedDimension()
&& !containsMeasurableHeight(containerWidth, elements)) {
return false;
}
return true;
}
private boolean containsMeasurableWidth(
ContainerDimension containerHeight, List<LayoutElement> elements) {
for (LayoutElement element : elements) {
if (isWidthMeasurable(element, containerHeight)) {
// Enough to find a single element that is measurable.
return true;
}
}
return false;
}
private boolean containsMeasurableHeight(
ContainerDimension containerWidth, List<LayoutElement> elements) {
for (LayoutElement element : elements) {
if (isHeightMeasurable(element, containerWidth)) {
// Enough to find a single element that is measurable.
return true;
}
}
return false;
}
private boolean isWidthMeasurable(LayoutElement element, ContainerDimension containerHeight) {
switch (element.getInnerCase()) {
case COLUMN:
return isMeasurable(element.getColumn().getWidth());
case ROW:
return isMeasurable(element.getRow().getWidth());
case BOX:
return isMeasurable(element.getBox().getWidth());
case SPACER:
return isMeasurable(element.getSpacer().getWidth());
case IMAGE:
// Special-case. If the image width is proportional, then the height must be
// measurable. This means either a fixed size, or expanded where we know the parent
// dimension.
Image img = element.getImage();
if (img.getWidth().hasProportionalDimension()) {
boolean isContainerHeightKnown =
(containerHeight.hasExpandedDimension()
|| containerHeight.hasLinearDimension());
return img.getHeight().hasLinearDimension()
|| (img.getHeight().hasExpandedDimension() && isContainerHeightKnown);
} else {
return isMeasurable(element.getImage().getWidth());
}
case ARC:
case TEXT:
case SPANNABLE:
return true;
case INNER_NOT_SET:
default: // TODO(b/178359365): Remove default case
return false;
}
}
private boolean isHeightMeasurable(LayoutElement element, ContainerDimension containerWidth) {
switch (element.getInnerCase()) {
case COLUMN:
return isMeasurable(element.getColumn().getHeight());
case ROW:
return isMeasurable(element.getRow().getHeight());
case BOX:
return isMeasurable(element.getBox().getHeight());
case SPACER:
return isMeasurable(element.getSpacer().getHeight());
case IMAGE:
// Special-case. If the image height is proportional, then the width must be
// measurable. This means either a fixed size, or expanded where we know the parent
// dimension.
Image img = element.getImage();
if (img.getHeight().hasProportionalDimension()) {
boolean isContainerWidthKnown =
(containerWidth.hasExpandedDimension()
|| containerWidth.hasLinearDimension());
return img.getWidth().hasLinearDimension()
|| (img.getWidth().hasExpandedDimension() && isContainerWidthKnown);
} else {
return isMeasurable(element.getImage().getHeight());
}
case ARC:
case TEXT:
case SPANNABLE:
return true;
case INNER_NOT_SET:
default: // TODO(b/178359365): Remove default case
return false;
}
}
private boolean isMeasurable(ContainerDimension dimension) {
return dimensionToPx(dimension) != LayoutParams.MATCH_PARENT;
}
private static boolean isMeasurable(ImageDimension dimension) {
switch (dimension.getInnerCase()) {
case LINEAR_DIMENSION:
case PROPORTIONAL_DIMENSION:
return true;
case EXPANDED_DIMENSION:
case INNER_NOT_SET:
return false;
}
return false;
}
private static boolean isMeasurable(SpacerDimension dimension) {
switch (dimension.getInnerCase()) {
case LINEAR_DIMENSION:
return true;
case INNER_NOT_SET:
return false;
}
return false;
}
private void inflateLayoutElements(ViewGroup parent, List<LayoutElement> elements) {
for (LayoutElement element : elements) {
inflateLayoutElement(parent, element);
}
}
/**
* Inflates a Tile into {@code parent}.
*
* @param parent The view to attach the tile into.
* @return The first child that was inflated. This may be null if the proto is empty the
* top-level LayoutElement has no inner set, or the top-level LayoutElement contains an
* unsupported inner type.
*/
@Nullable
public View inflate(@NonNull ViewGroup parent) {
// Go!
return inflateLayoutElement(parent, mLayoutProto.getRoot());
}
private static void applyGravityToFrameLayoutChildren(FrameLayout parent, int gravity) {
for (int i = 0; i < parent.getChildCount(); i++) {
View child = parent.getChildAt(i);
// All children should have a LayoutParams already set...
if (!(child.getLayoutParams() instanceof FrameLayout.LayoutParams)) {
// This...shouldn't happen.
throw new IllegalStateException(
"Layout params of child is not a descendant of FrameLayout.LayoutParams.");
}
// Children should grow out from the middle of the layout.
((FrameLayout.LayoutParams) child.getLayoutParams()).gravity = gravity;
}
}
private static void applyAudibleParams(View view, String accessibilityLabel) {
view.setContentDescription(accessibilityLabel);
view.setFocusable(true);
view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES);
}
/** Implementation of ClickableSpan for Tiles' Clickables. */
private class TilesClickableSpan extends ClickableSpan {
private final Clickable mClickable;
TilesClickableSpan(@NonNull Clickable clickable) {
this.mClickable = clickable;
}
@Override
public void onClick(@NonNull View widget) {
Action action = mClickable.getOnClick();
switch (action.getValueCase()) {
case LAUNCH_ACTION:
Intent i =
buildLaunchActionIntent(action.getLaunchAction(), mClickable.getId());
if (i != null) {
dispatchLaunchActionIntent(i);
}
break;
case LOAD_ACTION:
mLoadActionExecutor.execute(
() ->
mLoadActionListener.onClick(
buildState(
action.getLoadAction(), mClickable.getId())));
break;
case VALUE_NOT_SET:
break;
}
}
@Override
public void updateDrawState(@NonNull TextPaint ds) {
// Don't change the underlying text appearance.
}
}
// Android's normal ImageSpan (well, DynamicDrawableSpan) applies baseline alignment incorrectly
// in some cases. It incorrectly assumes that the difference between the bottom (as passed to
// draw) and baseline of the text is always equal to the font descent, when that doesn't always
// hold. Instead, the "y" parameter is the Y coordinate of the baseline, so base the baseline
// alignment on that rather than "bottom".
private static class FixedImageSpan extends ImageSpan {
private WeakReference<Drawable> mDrawableRef;
FixedImageSpan(@NonNull Drawable drawable) {
super(drawable);
}
FixedImageSpan(@NonNull Drawable drawable, int verticalAlignment) {
super(drawable, verticalAlignment);
}
@Override
public void draw(
@androidx.annotation.NonNull Canvas canvas,
CharSequence text,
int start,
int end,
float x,
int top,
int y,
int bottom,
@androidx.annotation.NonNull Paint paint) {
Drawable b = getCachedDrawable();
canvas.save();
int transY = bottom - b.getBounds().bottom;
if (mVerticalAlignment == ALIGN_BASELINE) {
transY = y - b.getBounds().bottom;
} else if (mVerticalAlignment == ALIGN_CENTER) {
transY = (bottom - top) / 2 - b.getBounds().height() / 2;
}
canvas.translate(x, transY);
b.draw(canvas);
canvas.restore();
}
private Drawable getCachedDrawable() {
WeakReference<Drawable> wr = mDrawableRef;
Drawable d = null;
if (wr != null) {
d = wr.get();
}
if (d == null) {
d = getDrawable();
mDrawableRef = new WeakReference<>(d);
}
return d;
}
}
/** Holder for different weights of the same font variant. */
private static class FontSet {
final Typeface mNormalFont;
final Typeface mMediumFont;
final Typeface mBoldFont;
FontSet(@NonNull Context appContext, int style) {
TypedArray a = appContext.obtainStyledAttributes(style, R.styleable.TilesFontSet);
this.mNormalFont = loadTypeface(a, R.styleable.TilesFontSet_tilesNormalFont);
this.mMediumFont = loadTypeface(a, R.styleable.TilesFontSet_tilesMediumFont);
this.mBoldFont = loadTypeface(a, R.styleable.TilesFontSet_tilesBoldFont);
a.recycle();
}
@SuppressLint("RestrictedApi") // TODO(b/183006740): Remove when prefix check is fixed.
private static Typeface loadTypeface(TypedArray array, int styleableResId) {
// Resources are a little nasty; we can't just check if resType =
// TypedValue.TYPE_REFERENCE, because it never is (if you use @font/foo inside of
// styles.xml, the value will be a string of the form res/font/foo.ttf). Instead, see if
// there's a resource ID at all, and use that, otherwise assume it's a well known font
// family.
int resType = array.getType(styleableResId);
if (array.getResourceId(styleableResId, -1) != -1
&& array.getFont(styleableResId) != null) {
return checkNotNull(array.getFont(styleableResId));
} else if (resType == TypedValue.TYPE_STRING
&& array.getString(styleableResId) != null) {
// Load the normal typeface; we customise this into BOLD/ITALIC later on.
return Typeface.create(
checkNotNull(array.getString(styleableResId)), Typeface.NORMAL);
} else {
throw new IllegalArgumentException("Unknown resource value type " + resType);
}
}
}
/** Implementation of {@link Scroller} which inhibits all scrolling. */
private static class InhibitingScroller extends Scroller {
InhibitingScroller(Context context) {
super(context);
}
@Override
public void startScroll(int startX, int startY, int dx, int dy) {}
@Override
public void startScroll(int startX, int startY, int dx, int dy, int duration) {}
}
}