Merge "Prevent edit state workspace scale from hiding next pages." into tm-dev

src/com/android/launcher3/DeviceProfile.java

@@ -928,6 +928,13 @@ public class DeviceProfile {
         return workspaceSpringLoadShrunkBottom;
     }
 
+    /**
+     * Gets the minimum visible amount of the next workspace page when in the spring-loaded state.
+     */
+    public float getWorkspaceSpringLoadedMinimumNextPageVisible() {
+        return getCellSize().x / 2f;
+    }
+
     public int getWorkspaceWidth() {
         return getWorkspaceWidth(getTotalWorkspacePadding());
     }

src/com/android/launcher3/states/SpringLoadedState.java

@@ -53,7 +53,15 @@ public class SpringLoadedState extends LauncherState {
 
         float shrunkTop = grid.getWorkspaceSpringLoadShrunkTop();
         float shrunkBottom = grid.getWorkspaceSpringLoadShrunkBottom();
-        float scale = (shrunkBottom - shrunkTop) / ws.getNormalChildHeight();
+        float scale = Math.min((shrunkBottom - shrunkTop) / ws.getNormalChildHeight(), 1f);
+
+        // Reduce scale if next pages would not be visible after scaling the workspace
+        float scaledWorkspaceWidth = ws.getWidth() * scale;
+        float maxAvailableWidth =
+                ws.getWidth() - (2 * grid.getWorkspaceSpringLoadedMinimumNextPageVisible());
+        if (scaledWorkspaceWidth > maxAvailableWidth) {
+            scale *= maxAvailableWidth / scaledWorkspaceWidth;
+        }
 
         float halfHeight = ws.getHeight() / 2;
         float myCenter = ws.getTop() + halfHeight;