Jim Miller | b505074 | 2011-06-08 23:01:28 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.internal.widget.multiwaveview; |
| 18 | |
| 19 | import android.content.res.Resources; |
| 20 | import android.graphics.Canvas; |
| 21 | import android.graphics.ColorFilter; |
| 22 | import android.graphics.drawable.Drawable; |
| 23 | import android.graphics.drawable.StateListDrawable; |
| 24 | import android.util.Log; |
| 25 | |
| 26 | public class TargetDrawable { |
| 27 | private static final String TAG = "TargetDrawable"; |
Dianne Hackborn | 29aae6f | 2011-08-18 18:30:09 -0700 | [diff] [blame] | 28 | private static final boolean DEBUG = false; |
| 29 | |
Jim Miller | b505074 | 2011-06-08 23:01:28 -0700 | [diff] [blame] | 30 | public static final int[] STATE_ACTIVE = |
| 31 | { android.R.attr.state_enabled, android.R.attr.state_active }; |
| 32 | public static final int[] STATE_INACTIVE = |
| 33 | { android.R.attr.state_enabled, -android.R.attr.state_active }; |
| 34 | public static final int[] STATE_FOCUSED = |
Jim Miller | 10c66af | 2012-05-10 15:59:03 -0700 | [diff] [blame] | 35 | { android.R.attr.state_enabled, -android.R.attr.state_active, |
| 36 | android.R.attr.state_focused }; |
Jim Miller | b505074 | 2011-06-08 23:01:28 -0700 | [diff] [blame] | 37 | |
| 38 | private float mTranslationX = 0.0f; |
| 39 | private float mTranslationY = 0.0f; |
Jim Miller | 10c66af | 2012-05-10 15:59:03 -0700 | [diff] [blame] | 40 | private float mPositionX = 0.0f; |
| 41 | private float mPositionY = 0.0f; |
Jim Miller | b505074 | 2011-06-08 23:01:28 -0700 | [diff] [blame] | 42 | private float mScaleX = 1.0f; |
| 43 | private float mScaleY = 1.0f; |
| 44 | private float mAlpha = 1.0f; |
| 45 | private Drawable mDrawable; |
Jim Miller | b030476 | 2012-03-13 20:01:25 -0700 | [diff] [blame] | 46 | private boolean mEnabled = true; |
Jim Miller | 3294b6b | 2012-05-31 17:49:13 -0700 | [diff] [blame] | 47 | private final int mResourceId; |
Jim Miller | b505074 | 2011-06-08 23:01:28 -0700 | [diff] [blame] | 48 | |
Jim Miller | b505074 | 2011-06-08 23:01:28 -0700 | [diff] [blame] | 49 | public TargetDrawable(Resources res, int resId) { |
Jim Miller | b030476 | 2012-03-13 20:01:25 -0700 | [diff] [blame] | 50 | mResourceId = resId; |
Jim Miller | 3294b6b | 2012-05-31 17:49:13 -0700 | [diff] [blame] | 51 | setDrawable(res, resId); |
| 52 | } |
| 53 | |
| 54 | public void setDrawable(Resources res, int resId) { |
| 55 | // Note we explicitly don't set mResourceId to resId since we allow the drawable to be |
| 56 | // swapped at runtime and want to re-use the existing resource id for identification. |
Jim Miller | b030476 | 2012-03-13 20:01:25 -0700 | [diff] [blame] | 57 | Drawable drawable = resId == 0 ? null : res.getDrawable(resId); |
Jim Miller | b505074 | 2011-06-08 23:01:28 -0700 | [diff] [blame] | 58 | // Mutate the drawable so we can animate shared drawable properties. |
| 59 | mDrawable = drawable != null ? drawable.mutate() : null; |
| 60 | resizeDrawables(); |
| 61 | setState(STATE_INACTIVE); |
| 62 | } |
| 63 | |
Jim Miller | 4c351d6 | 2012-05-10 21:28:24 -0700 | [diff] [blame] | 64 | public TargetDrawable(TargetDrawable other) { |
| 65 | mResourceId = other.mResourceId; |
| 66 | // Mutate the drawable so we can animate shared drawable properties. |
| 67 | mDrawable = other.mDrawable != null ? other.mDrawable.mutate() : null; |
| 68 | resizeDrawables(); |
| 69 | setState(STATE_INACTIVE); |
| 70 | } |
| 71 | |
Jim Miller | b505074 | 2011-06-08 23:01:28 -0700 | [diff] [blame] | 72 | public void setState(int [] state) { |
| 73 | if (mDrawable instanceof StateListDrawable) { |
| 74 | StateListDrawable d = (StateListDrawable) mDrawable; |
| 75 | d.setState(state); |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | public boolean hasState(int [] state) { |
| 80 | if (mDrawable instanceof StateListDrawable) { |
| 81 | StateListDrawable d = (StateListDrawable) mDrawable; |
| 82 | // TODO: this doesn't seem to work |
| 83 | return d.getStateDrawableIndex(state) != -1; |
| 84 | } |
| 85 | return false; |
| 86 | } |
| 87 | |
| 88 | /** |
| 89 | * Returns true if the drawable is a StateListDrawable and is in the focused state. |
| 90 | * |
| 91 | * @return |
| 92 | */ |
| 93 | public boolean isActive() { |
| 94 | if (mDrawable instanceof StateListDrawable) { |
| 95 | StateListDrawable d = (StateListDrawable) mDrawable; |
| 96 | int[] states = d.getState(); |
| 97 | for (int i = 0; i < states.length; i++) { |
| 98 | if (states[i] == android.R.attr.state_focused) { |
| 99 | return true; |
| 100 | } |
| 101 | } |
| 102 | } |
| 103 | return false; |
| 104 | } |
| 105 | |
| 106 | /** |
| 107 | * Returns true if this target is enabled. Typically an enabled target contains a valid |
| 108 | * drawable in a valid state. Currently all targets with valid drawables are valid. |
| 109 | * |
| 110 | * @return |
| 111 | */ |
Jim Miller | b030476 | 2012-03-13 20:01:25 -0700 | [diff] [blame] | 112 | public boolean isEnabled() { |
| 113 | return mDrawable != null && mEnabled; |
Jim Miller | b505074 | 2011-06-08 23:01:28 -0700 | [diff] [blame] | 114 | } |
| 115 | |
| 116 | /** |
| 117 | * Makes drawables in a StateListDrawable all the same dimensions. |
| 118 | * If not a StateListDrawable, then justs sets the bounds to the intrinsic size of the |
| 119 | * drawable. |
| 120 | */ |
| 121 | private void resizeDrawables() { |
| 122 | if (mDrawable instanceof StateListDrawable) { |
| 123 | StateListDrawable d = (StateListDrawable) mDrawable; |
| 124 | int maxWidth = 0; |
| 125 | int maxHeight = 0; |
| 126 | for (int i = 0; i < d.getStateCount(); i++) { |
| 127 | Drawable childDrawable = d.getStateDrawable(i); |
| 128 | maxWidth = Math.max(maxWidth, childDrawable.getIntrinsicWidth()); |
| 129 | maxHeight = Math.max(maxHeight, childDrawable.getIntrinsicHeight()); |
| 130 | } |
Dianne Hackborn | 29aae6f | 2011-08-18 18:30:09 -0700 | [diff] [blame] | 131 | if (DEBUG) Log.v(TAG, "union of childDrawable rects " + d + " to: " |
| 132 | + maxWidth + "x" + maxHeight); |
Jim Miller | b505074 | 2011-06-08 23:01:28 -0700 | [diff] [blame] | 133 | d.setBounds(0, 0, maxWidth, maxHeight); |
| 134 | for (int i = 0; i < d.getStateCount(); i++) { |
| 135 | Drawable childDrawable = d.getStateDrawable(i); |
Dianne Hackborn | 29aae6f | 2011-08-18 18:30:09 -0700 | [diff] [blame] | 136 | if (DEBUG) Log.v(TAG, "sizing drawable " + childDrawable + " to: " |
| 137 | + maxWidth + "x" + maxHeight); |
Jim Miller | b505074 | 2011-06-08 23:01:28 -0700 | [diff] [blame] | 138 | childDrawable.setBounds(0, 0, maxWidth, maxHeight); |
| 139 | } |
| 140 | } else if (mDrawable != null) { |
| 141 | mDrawable.setBounds(0, 0, |
| 142 | mDrawable.getIntrinsicWidth(), mDrawable.getIntrinsicHeight()); |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | public void setX(float x) { |
| 147 | mTranslationX = x; |
| 148 | } |
| 149 | |
| 150 | public void setY(float y) { |
| 151 | mTranslationY = y; |
| 152 | } |
| 153 | |
| 154 | public void setScaleX(float x) { |
| 155 | mScaleX = x; |
| 156 | } |
| 157 | |
| 158 | public void setScaleY(float y) { |
| 159 | mScaleY = y; |
| 160 | } |
| 161 | |
| 162 | public void setAlpha(float alpha) { |
| 163 | mAlpha = alpha; |
| 164 | } |
| 165 | |
| 166 | public float getX() { |
| 167 | return mTranslationX; |
| 168 | } |
| 169 | |
| 170 | public float getY() { |
| 171 | return mTranslationY; |
| 172 | } |
| 173 | |
| 174 | public float getScaleX() { |
| 175 | return mScaleX; |
| 176 | } |
| 177 | |
| 178 | public float getScaleY() { |
| 179 | return mScaleY; |
| 180 | } |
| 181 | |
| 182 | public float getAlpha() { |
| 183 | return mAlpha; |
| 184 | } |
| 185 | |
Jim Miller | 10c66af | 2012-05-10 15:59:03 -0700 | [diff] [blame] | 186 | public void setPositionX(float x) { |
| 187 | mPositionX = x; |
| 188 | } |
| 189 | |
| 190 | public void setPositionY(float y) { |
| 191 | mPositionY = y; |
| 192 | } |
| 193 | |
| 194 | public float getPositionX() { |
| 195 | return mPositionX; |
| 196 | } |
| 197 | |
| 198 | public float getPositionY() { |
| 199 | return mPositionY; |
| 200 | } |
| 201 | |
Jim Miller | b505074 | 2011-06-08 23:01:28 -0700 | [diff] [blame] | 202 | public int getWidth() { |
| 203 | return mDrawable != null ? mDrawable.getIntrinsicWidth() : 0; |
| 204 | } |
| 205 | |
| 206 | public int getHeight() { |
| 207 | return mDrawable != null ? mDrawable.getIntrinsicHeight() : 0; |
| 208 | } |
| 209 | |
| 210 | public void draw(Canvas canvas) { |
Jim Miller | b030476 | 2012-03-13 20:01:25 -0700 | [diff] [blame] | 211 | if (mDrawable == null || !mEnabled) { |
Jim Miller | b505074 | 2011-06-08 23:01:28 -0700 | [diff] [blame] | 212 | return; |
| 213 | } |
| 214 | canvas.save(Canvas.MATRIX_SAVE_FLAG); |
Jim Miller | 10c66af | 2012-05-10 15:59:03 -0700 | [diff] [blame] | 215 | canvas.scale(mScaleX, mScaleY, mPositionX, mPositionY); |
| 216 | canvas.translate(mTranslationX + mPositionX, mTranslationY + mPositionY); |
Jim Miller | b505074 | 2011-06-08 23:01:28 -0700 | [diff] [blame] | 217 | canvas.translate(-0.5f * getWidth(), -0.5f * getHeight()); |
| 218 | mDrawable.setAlpha((int) Math.round(mAlpha * 255f)); |
| 219 | mDrawable.draw(canvas); |
| 220 | canvas.restore(); |
| 221 | } |
Jim Miller | b030476 | 2012-03-13 20:01:25 -0700 | [diff] [blame] | 222 | |
| 223 | public void setEnabled(boolean enabled) { |
| 224 | mEnabled = enabled; |
| 225 | } |
| 226 | |
| 227 | public int getResourceId() { |
| 228 | return mResourceId; |
| 229 | } |
Jim Miller | b505074 | 2011-06-08 23:01:28 -0700 | [diff] [blame] | 230 | } |