Add workspace page translations for edit state.
Bug: 202971709
Test: manual
Change-Id: Ic807d380053b8cc5aaf521513c308854e1b14a43
diff --git a/src/com/android/launcher3/LauncherState.java b/src/com/android/launcher3/LauncherState.java
index be2cd88..baee49f 100644
--- a/src/com/android/launcher3/LauncherState.java
+++ b/src/com/android/launcher3/LauncherState.java
@@ -16,6 +16,7 @@
package com.android.launcher3;
import static com.android.launcher3.anim.Interpolators.ACCEL_2;
+import static com.android.launcher3.anim.Interpolators.DEACCEL_2;
import static com.android.launcher3.logging.StatsLogManager.LAUNCHER_STATE_HOME;
import static com.android.launcher3.logging.StatsLogManager.LAUNCHER_STATE_OVERVIEW;
import static com.android.launcher3.testing.TestProtocol.ALL_APPS_STATE_ORDINAL;
@@ -91,6 +92,14 @@
}
};
+ protected static final PageTranslationProvider DEFAULT_PAGE_TRANSLATION_PROVIDER =
+ new PageTranslationProvider(DEACCEL_2) {
+ @Override
+ public float getPageTranslation(int pageIndex) {
+ return 0;
+ }
+ };
+
private static final LauncherState[] sAllStates = new LauncherState[10];
/**
@@ -288,6 +297,25 @@
};
}
+ /**
+ * Gets the translation provider for workspace pages.
+ */
+ public PageTranslationProvider getWorkspacePageTranslationProvider(Launcher launcher) {
+ if (this != SPRING_LOADED || !launcher.getDeviceProfile().isTwoPanels) {
+ return DEFAULT_PAGE_TRANSLATION_PROVIDER;
+ }
+ final float quarterPageSpacing = launcher.getWorkspace().getPageSpacing() / 4f;
+ return new PageTranslationProvider(DEACCEL_2) {
+ @Override
+ public float getPageTranslation(int pageIndex) {
+ boolean isRtl = launcher.getWorkspace().mIsRtl;
+ boolean isFirstPage = pageIndex % 2 == 0;
+ return ((isFirstPage && !isRtl) || (!isFirstPage && isRtl)) ? -quarterPageSpacing
+ : quarterPageSpacing;
+ }
+ };
+ }
+
@Override
public LauncherState getHistoryForState(LauncherState previousState) {
// No history is supported
@@ -318,6 +346,23 @@
public abstract float getPageAlpha(int pageIndex);
}
+ /**
+ * Provider for the translation and animation interpolation of workspace pages.
+ */
+ public abstract static class PageTranslationProvider {
+
+ public final Interpolator interpolator;
+
+ public PageTranslationProvider(Interpolator interpolator) {
+ this.interpolator = interpolator;
+ }
+
+ /**
+ * Gets the translation of the workspace page at the provided page index.
+ */
+ public abstract float getPageTranslation(int pageIndex);
+ }
+
public static class ScaleAndTranslation {
public float scale;
public float translationX;