LatinIME/java/src/com/android/inputmethod/keyboard/internal/KeyPreviewDrawParams.java

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/*
* Copyright (C) 2012 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 com.android.inputmethod.keyboard.internal;
import android.content.res.TypedArray;
import android.view.View;
import com.android.inputmethod.latin.R;
public final class KeyPreviewDrawParams {
// XML attributes of {@link MainKeyboardView}.
public final int mKeyPreviewOffset;
public final int mKeyPreviewHeight;
// The graphical geometry of the key preview.
// <-width->
// +-------+ ^
// | | |
// |preview| height (visible)
// | | |
// + + ^ v
// \ / |offset
// +-\ /-+ v
// | +-+ |
// |parent |
// | key|
// +-------+
// The background of a {@link TextView} being used for a key preview may have invisible
// paddings. To align the more keys keyboard panel's visible part with the visible part of
// the background, we need to record the width and height of key preview that don't include
// invisible paddings.
private int mVisibleWidth;
private int mVisibleHeight;
// The key preview may have an arbitrary offset and its background that may have a bottom
// padding. To align the more keys keyboard and the key preview we also need to record the
// offset between the top edge of parent key and the bottom of the visible part of key
// preview background.
private int mVisibleOffset;
public KeyPreviewDrawParams(final TypedArray mainKeyboardViewAttr) {
mKeyPreviewOffset = mainKeyboardViewAttr.getDimensionPixelOffset(
R.styleable.MainKeyboardView_keyPreviewOffset, 0);
mKeyPreviewHeight = mainKeyboardViewAttr.getDimensionPixelSize(
R.styleable.MainKeyboardView_keyPreviewHeight, 0);
}
public void setVisibleOffset(final int previewVisibleOffset) {
mVisibleOffset = previewVisibleOffset;
}
public int getVisibleOffset() {
return mVisibleOffset;
}
public void setGeometry(final View previewTextView) {
final int previewWidth = previewTextView.getMeasuredWidth();
final int previewHeight = mKeyPreviewHeight;
// The width and height of visible part of the key preview background. The content marker
// of the background 9-patch have to cover the visible part of the background.
mVisibleWidth = previewWidth - previewTextView.getPaddingLeft()
- previewTextView.getPaddingRight();
mVisibleHeight = previewHeight - previewTextView.getPaddingTop()
- previewTextView.getPaddingBottom();
// The distance between the top edge of the parent key and the bottom of the visible part
// of the key preview background.
setVisibleOffset(mKeyPreviewOffset - previewTextView.getPaddingBottom());
}
public int getVisibleWidth() {
return mVisibleWidth;
}
public int getVisibleHeight() {
return mVisibleHeight;
}
}