Scale the preview content from full preview size to match the container size
Screenshot:
- Full preview: https://screenshot.googleplex.com/ngtQivW5PcM.png
- Small preview: https://screenshot.googleplex.com/sEy6UMQnJ7M.png
Video: https://drive.google.com/file/d/1S4ng6NlBN19VGHQSLCVL1_28NR7UvX6k/view?usp=sharing
Known issue in the video: the text size will change per selected theme, and then push down the bottom components, will fix later.
Test: Manually
Bug: 146475648
Bug: 151286773
Change-Id: I9063efa9ee2418f2b76c2d17a2e539a5e4acbe8b
diff --git a/src/com/android/customization/picker/theme/ThemeOptionPreviewer.java b/src/com/android/customization/picker/theme/ThemeOptionPreviewer.java
index 7412f33..bb72c5d 100644
--- a/src/com/android/customization/picker/theme/ThemeOptionPreviewer.java
+++ b/src/com/android/customization/picker/theme/ThemeOptionPreviewer.java
@@ -15,11 +15,17 @@
*/
package com.android.customization.picker.theme;
+import static android.view.View.MeasureSpec.EXACTLY;
+import static android.view.View.MeasureSpec.makeMeasureSpec;
+
import android.content.Context;
import android.content.res.ColorStateList;
+import android.content.res.Resources;
import android.graphics.Typeface;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.GradientDrawable;
+import android.util.DisplayMetrics;
+import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
@@ -38,6 +44,7 @@
import com.android.customization.model.theme.ThemeBundle.PreviewInfo;
import com.android.customization.picker.TimeTicker;
import com.android.wallpaper.R;
+import com.android.wallpaper.util.ScreenSizeCalculator;
import java.text.DateFormat;
import java.text.FieldPosition;
@@ -95,9 +102,46 @@
mContext = context;
mContentView = LayoutInflater.from(context).inflate(
- R.layout.theme_preview_content_v2, previewContainer);
+ R.layout.theme_preview_content_v2, /* root= */ null);
mClock = mContentView.findViewById(R.id.theme_preview_clock);
updateTime();
+ final float screenAspectRatio =
+ ScreenSizeCalculator.getInstance().getScreenAspectRatio(mContext);
+ previewContainer.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
+ @Override
+ public void onLayoutChange(View view, int i, int i1, int i2, int i3, int i4, int i5,
+ int i6, int i7) {
+ // Calculate the full preview card height and width.
+ int fullPreviewCardHeight = getFullPreviewCardHeight();
+ int fullPreviewCardWidth = (int) (getFullPreviewCardHeight() / screenAspectRatio);
+
+ // Relayout the content view to match full preview card size.
+ mContentView.measure(
+ makeMeasureSpec(fullPreviewCardWidth, EXACTLY),
+ makeMeasureSpec(fullPreviewCardHeight, EXACTLY));
+ mContentView.layout(0, 0, fullPreviewCardWidth, fullPreviewCardHeight);
+
+ // Scale the content view from full preview size to the container size. For full
+ // preview, the scale value is 1.
+ float scale =
+ (float) previewContainer.getMeasuredHeight() / getFullPreviewCardHeight();
+ mContentView.setScaleX(scale);
+ mContentView.setScaleY(scale);
+ // The pivot point is centered by default, set to (0, 0).
+ mContentView.setPivotX(0f);
+ mContentView.setPivotY(0f);
+
+ // Ensure there's only one content view in the container.
+ previewContainer.removeAllViews();
+ // Finally, add the content view to the container.
+ previewContainer.addView(
+ mContentView,
+ mContentView.getMeasuredWidth(),
+ mContentView.getMeasuredHeight());
+
+ previewContainer.removeOnLayoutChangeListener(this);
+ }
+ });
}
/** Loads the Theme option into the container view. */
@@ -249,4 +293,32 @@
}
);
}
+
+ /**
+ * Gets the screen height which does not include the system status bar and bottom navigation
+ * bar.
+ */
+ private int getDisplayHeight() {
+ final DisplayMetrics dm = mContext.getResources().getDisplayMetrics();
+ return dm.heightPixels;
+ }
+
+ // The height of top tool bar (R.layout.section_header).
+ private int getTopToolBarHeight() {
+ final TypedValue typedValue = new TypedValue();
+ return mContext.getTheme().resolveAttribute(
+ android.R.attr.actionBarSize, typedValue, true)
+ ? TypedValue.complexToDimensionPixelSize(
+ typedValue.data, mContext.getResources().getDisplayMetrics())
+ : 0;
+ }
+
+ private int getFullPreviewCardHeight() {
+ final Resources res = mContext.getResources();
+ return getDisplayHeight()
+ - getTopToolBarHeight()
+ - res.getDimensionPixelSize(R.dimen.bottom_navbar_height)
+ - res.getDimensionPixelSize(R.dimen.full_preview_page_default_padding_top)
+ - res.getDimensionPixelSize(R.dimen.full_preview_page_default_padding_bottom);
+ }
}
