1 /* 2 * Copyright (C) 2012 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.gallery3d.filtershow.imageshow; 18 19 import android.content.Context; 20 import android.graphics.Bitmap; 21 import android.graphics.Canvas; 22 import android.graphics.Color; 23 import android.graphics.Paint; 24 import android.graphics.Rect; 25 import android.util.AttributeSet; 26 import android.view.View; 27 28 import com.android.gallery3d.filtershow.FilterShowActivity; 29 import com.android.gallery3d.filtershow.filters.ImageFilter; 30 import com.android.gallery3d.filtershow.presets.ImagePreset; 31 32 public class ImageSmallFilter extends ImageShow implements View.OnClickListener { 33 34 private static final String LOGTAG = "ImageSmallFilter"; 35 private FilterShowActivity mController = null; 36 protected ImageFilter mImageFilter = null; 37 private boolean mShowTitle = true; 38 private boolean mSetBorder = false; 39 protected final Paint mPaint = new Paint(); 40 protected boolean mIsSelected = false; 41 42 // TODO: move this to xml. 43 protected static int mMargin = 12; 44 protected static int mTextMargin = 8; 45 protected static int mBackgroundColor = Color.BLUE; 46 protected final int mSelectedBackgroundColor = Color.WHITE; 47 protected final int mTextColor = Color.WHITE; 48 private ImageSmallFilter mNullFilter; 49 50 public static void setMargin(int value) { 51 mMargin = value; 52 } 53 54 public static void setTextMargin(int value) { 55 mTextMargin = value; 56 } 57 58 public static void setDefaultBackgroundColor(int value) { 59 mBackgroundColor = value; 60 } 61 62 public ImageSmallFilter(Context context, AttributeSet attrs) { 63 super(context, attrs); 64 setOnClickListener(this); 65 } 66 67 public ImageSmallFilter(Context context) { 68 super(context); 69 setOnClickListener(this); 70 } 71 72 public void setImageFilter(ImageFilter filter) { 73 mImageFilter = filter; 74 mImagePreset = new ImagePreset(); 75 mImagePreset.setName(filter.getName()); 76 filter.setImagePreset(mImagePreset); 77 mImagePreset.add(mImageFilter); 78 } 79 80 @Override 81 public void setSelected(boolean value) { 82 if (mIsSelected != value) { 83 invalidate(); 84 } 85 mIsSelected = value; 86 } 87 88 public void setBorder(boolean value) { 89 mSetBorder = value; 90 } 91 92 public void setController(FilterShowActivity activity) { 93 mController = activity; 94 } 95 96 @Override 97 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 98 int parentWidth = MeasureSpec.getSize(widthMeasureSpec); 99 int parentHeight = MeasureSpec.getSize(heightMeasureSpec); 100 int h = mTextSize + mTextPadding; 101 setMeasuredDimension(parentHeight - h, parentHeight); 102 } 103 104 /** 105 * Setting the nullFilter implies that the behavior of the button is toggle 106 * 107 * @param nullFilter 108 */ 109 public void setNulfilter(ImageSmallFilter nullFilter) { 110 mNullFilter = nullFilter; 111 } 112 113 @Override 114 public void onClick(View v) { 115 if (mController != null) { 116 if (mImageFilter != null) { 117 if (mIsSelected && mNullFilter != null) { 118 mNullFilter.onClick(v); 119 } 120 else { 121 mController.useImageFilter(this, mImageFilter, mSetBorder); 122 } 123 } else if (mImagePreset != null) { 124 if (mIsSelected && mNullFilter != null) { 125 mNullFilter.onClick(v); 126 } 127 else { 128 mController.useImagePreset(this, mImagePreset); 129 } 130 } 131 } 132 } 133 134 @Override 135 public boolean updateGeometryFlags() { 136 // We don't want to warn listeners here that the image size has changed, because 137 // we'll be working with the small image... 138 return false; 139 } 140 141 public void setShowTitle(boolean value) { 142 mShowTitle = value; 143 invalidate(); 144 } 145 146 @Override 147 public boolean showTitle() { 148 return mShowTitle; 149 } 150 151 @Override 152 public boolean showControls() { 153 return false; 154 } 155 156 @Override 157 public boolean showHires() { 158 return false; 159 } 160 161 @Override 162 public ImagePreset getImagePreset() { 163 return mImagePreset; 164 } 165 166 @Override 167 public void updateImagePresets(boolean force) { 168 ImagePreset preset = getImagePreset(); 169 if (preset == null) { 170 return; 171 } 172 } 173 174 @Override 175 public void onDraw(Canvas canvas) { 176 requestFilteredImages(); 177 canvas.drawColor(mBackgroundColor); 178 float textWidth = mPaint.measureText(mImageFilter.getName()); 179 int h = mTextSize + 2 * mTextPadding; 180 int x = (int) ((getWidth() - textWidth) / 2); 181 int y = getHeight(); 182 if (mIsSelected) { 183 mPaint.setColor(mSelectedBackgroundColor); 184 canvas.drawRect(0, mMargin, getWidth(), getWidth() + mMargin, mPaint); 185 } 186 Rect destination = new Rect(mMargin, 2*mMargin, getWidth() - mMargin, getWidth()); 187 drawImage(canvas, getFilteredImage(), destination); 188 mPaint.setTextSize(mTextSize); 189 mPaint.setColor(mTextColor); 190 canvas.drawText(mImageFilter.getName(), x, y - mTextMargin, mPaint); 191 } 192 193 public void drawImage(Canvas canvas, Bitmap image, Rect destination) { 194 if (image != null) { 195 int iw = image.getWidth(); 196 int ih = image.getHeight(); 197 int x = 0; 198 int y = 0; 199 int size = 0; 200 Rect source = null; 201 if (iw > ih) { 202 size = ih; 203 x = (int) ((iw - size) / 2.0f); 204 y = 0; 205 } else { 206 size = iw; 207 x = 0; 208 y = (int) ((ih - size) / 2.0f); 209 } 210 source = new Rect(x, y, x + size, y + size); 211 canvas.drawBitmap(image, source, destination, mPaint); 212 } 213 } 214 215 } 216
