/* * Copyright (C) 2014 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.abifog.lokiboard.keyboard.internal; import android.content.Context; import android.graphics.Rect; import android.graphics.drawable.Drawable; import android.text.TextPaint; import android.text.TextUtils; import android.util.AttributeSet; import android.util.TypedValue; import android.view.Gravity; import android.widget.TextView; import java.util.HashSet; import com.abifog.lokiboard.keyboard.Key; /** * The pop up key preview view. */ public class KeyPreviewView extends TextView { private final Rect mBackgroundPadding = new Rect(); private static final HashSet<String> sNoScaleXTextSet = new HashSet<>(); public KeyPreviewView(final Context context, final AttributeSet attrs) { this(context, attrs, 0); } public KeyPreviewView(final Context context, final AttributeSet attrs, final int defStyleAttr) { super(context, attrs, defStyleAttr); setGravity(Gravity.CENTER); } public void setPreviewVisual(final Key key, final KeyboardIconsSet iconsSet, final KeyDrawParams drawParams) { // What we show as preview should match what we show on a key top in onDraw(). final int iconId = key.getIconId(); if (iconId != KeyboardIconsSet.ICON_UNDEFINED) { setCompoundDrawables(null, null, null, key.getPreviewIcon(iconsSet)); setText(null); return; } setCompoundDrawables(null, null, null, null); setTextColor(drawParams.mPreviewTextColor); setTextSize(TypedValue.COMPLEX_UNIT_PX, key.selectPreviewTextSize(drawParams)); setTypeface(key.selectPreviewTypeface(drawParams)); // TODO Should take care of temporaryShiftLabel here. setTextAndScaleX(key.getPreviewLabel()); } private void setTextAndScaleX(final String text) { setTextScaleX(1.0f); setText(text); if (sNoScaleXTextSet.contains(text)) { return; } // TODO: Override {@link #setBackground(Drawable)} that is supported from API 16 and // calculate maximum text width. final Drawable background = getBackground(); if (background == null) { return; } background.getPadding(mBackgroundPadding); final int maxWidth = background.getIntrinsicWidth() - mBackgroundPadding.left - mBackgroundPadding.right; final float width = getTextWidth(text, getPaint()); if (width <= maxWidth) { sNoScaleXTextSet.add(text); return; } setTextScaleX(maxWidth / width); } public static void clearTextCache() { sNoScaleXTextSet.clear(); } private static float getTextWidth(final String text, final TextPaint paint) { if (TextUtils.isEmpty(text)) { return 0.0f; } final int len = text.length(); final float[] widths = new float[len]; final int count = paint.getTextWidths(text, 0, len, widths); float width = 0; for (int i = 0; i < count; i++) { width += widths[i]; } return width; } /*public void setPreviewBackground(boolean customColorEnabled, int customColor) { final Drawable background = getBackground(); if (customColorEnabled) background.setColorFilter(customColor, PorterDuff.Mode.OVERLAY); }*/ }