From f0af452ce261590b5978a1bb679ce27b71f9dc70 Mon Sep 17 00:00:00 2001 From: Jean Chalard Date: Tue, 25 Jun 2013 19:26:30 +0900 Subject: Do not re-resume suggestion if it's not needed. This is much better interface-wise. It eliminates all blinking of the line in the practice. Bug: 8874148 Bug: 8864306 Change-Id: I87754e44784327c2e9c8b162d598d145e20668e8 --- .../android/inputmethod/latin/WordComposer.java | 34 ++++++++++++++++++++++ 1 file changed, 34 insertions(+) (limited to 'java/src/com/android/inputmethod/latin/WordComposer.java') diff --git a/java/src/com/android/inputmethod/latin/WordComposer.java b/java/src/com/android/inputmethod/latin/WordComposer.java index e078f03f4..2babe8b0c 100644 --- a/java/src/com/android/inputmethod/latin/WordComposer.java +++ b/java/src/com/android/inputmethod/latin/WordComposer.java @@ -192,6 +192,40 @@ public final class WordComposer { return mCursorPositionWithinWord != mCodePointSize; } + /** + * When the cursor is moved by the user, we need to update its position. + * If it falls inside the currently composing word, we don't reset the composition, and + * only update the cursor position. + * + * @param expectedMoveAmount How many java chars to move the cursor. Negative values move + * the cursor backward, positive values move the cursor forward. + * @return true if the cursor is still inside the composing word, false otherwise. + */ + public boolean moveCursorByAndReturnIfInsideComposingWord(final int expectedMoveAmount) { + int actualMoveAmountWithinWord = 0; + int cursorPos = mCursorPositionWithinWord; + if (expectedMoveAmount >= 0) { + // Moving the cursor forward for the expected amount or until the end of the word has + // been reached, whichever comes first. + while (actualMoveAmountWithinWord < expectedMoveAmount && cursorPos < mCodePointSize) { + actualMoveAmountWithinWord += Character.charCount(mPrimaryKeyCodes[cursorPos]); + ++cursorPos; + } + } else { + // Moving the cursor backward for the expected amount or until the start of the word + // has been reached, whichever comes first. + while (actualMoveAmountWithinWord > expectedMoveAmount && cursorPos > 0) { + --cursorPos; + actualMoveAmountWithinWord -= Character.charCount(mPrimaryKeyCodes[cursorPos]); + } + } + // If the actual and expected amounts differ, we crossed the start or the end of the word + // so the result would not be inside the composing word. + if (actualMoveAmountWithinWord != expectedMoveAmount) return false; + mCursorPositionWithinWord = cursorPos; + return true; + } + public void setBatchInputPointers(final InputPointers batchPointers) { mInputPointers.set(batchPointers); mIsBatchMode = true; -- cgit v1.2.3-83-g751a