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/*
* Copyright (C) 2013 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.gallery3d.filtershow.category;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.LinearGradient;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Shader;
import android.graphics.Typeface;
import android.util.AttributeSet;
import android.view.View;
import com.android.gallery3d.R;
public class IconView extends View {
public static final int VERTICAL = 0;
public static final int HORIZONTAL = 1;
private Paint mPaint = new Paint();
private int mTextColor;
private int mBackgroundColor;
private int mMargin = 16;
private int mOrientation = HORIZONTAL;
private int mTextSize = 32;
private Rect mTextBounds = new Rect();
private Bitmap mBitmap;
private Rect mBitmapBounds;
private String mText;
private boolean mUseOnlyDrawable = false;
public IconView(Context context, AttributeSet attrs) {
super(context, attrs);
setup(context);
int bitmapRsc = attrs.getAttributeResourceValue(
"http://schemas.android.com/apk/res/android", "src", 0);
Resources res = context.getResources();
Bitmap bitmap = BitmapFactory.decodeStream(res.openRawResource(bitmapRsc));
setBitmap(bitmap);
setUseOnlyDrawable(true);
}
public IconView(Context context) {
super(context);
setup(context);
}
private void setup(Context context) {
Resources res = getResources();
mTextColor = res.getColor(R.color.filtershow_categoryview_text);
mBackgroundColor = res.getColor(R.color.filtershow_categoryview_background);
mMargin = res.getDimensionPixelOffset(R.dimen.category_panel_margin);
mTextSize = res.getDimensionPixelSize(R.dimen.category_panel_text_size);
}
protected void computeTextPosition(String text) {
if (text == null) {
return;
}
mPaint.setTextSize(mTextSize);
if (getOrientation() == VERTICAL) {
text = text.toUpperCase();
// TODO: set this in xml
mPaint.setTypeface(Typeface.DEFAULT_BOLD);
}
mPaint.getTextBounds(text, 0, text.length(), mTextBounds);
}
public boolean needsCenterText() {
if (mOrientation == HORIZONTAL) {
return true;
}
return false;
}
protected void drawText(Canvas canvas, String text) {
if (text == null) {
return;
}
float textWidth = mPaint.measureText(text);
int x = (int) (canvas.getWidth() - textWidth - 2*mMargin);
if (needsCenterText()) {
x = (int) ((canvas.getWidth() - textWidth) / 2.0f);
}
if (x < 0) {
// If the text takes more than the view width,
// justify to the left.
x = mMargin;
}
int y = canvas.getHeight() - 2*mMargin;
canvas.drawText(text, x, y, mPaint);
}
protected void drawOutlinedText(Canvas canvas, String text) {
mPaint.setColor(getBackgroundColor());
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setStrokeWidth(3);
drawText(canvas, text);
mPaint.setColor(getTextColor());
mPaint.setStyle(Paint.Style.FILL);
mPaint.setStrokeWidth(1);
drawText(canvas, text);
}
public int getOrientation() {
return mOrientation;
}
public void setOrientation(int orientation) {
mOrientation = orientation;
}
public int getMargin() {
return mMargin;
}
public int getTextSize() {
return mTextSize;
}
public int getTextColor() {
return mTextColor;
}
public int getBackgroundColor() {
return mBackgroundColor;
}
public void setText(String text) {
mText = text;
}
public String getText() {
return mText;
}
public void setBitmap(Bitmap bitmap) {
mBitmap = bitmap;
}
public void setUseOnlyDrawable(boolean value) {
mUseOnlyDrawable = value;
}
public Rect getBitmapBounds() {
return mBitmapBounds;
}
@Override
public CharSequence getContentDescription () {
return mText;
}
public boolean isHalfImage() {
return false;
}
public void computeBitmapBounds() {
if (mUseOnlyDrawable) {
mBitmapBounds = new Rect(mMargin/2, mMargin, getWidth() - mMargin/2,
getHeight() - mTextSize - 2*mMargin);
} else {
if (getOrientation() == VERTICAL && isHalfImage()) {
mBitmapBounds = new Rect(mMargin/2, mMargin, getWidth()/2, getHeight());
} else {
mBitmapBounds = new Rect(mMargin/2, mMargin, getWidth() - mMargin/2, getHeight());
}
}
}
@Override
public void onDraw(Canvas canvas) {
mPaint.reset();
mPaint.setAntiAlias(true);
mPaint.setFilterBitmap(true);
canvas.drawColor(mBackgroundColor);
computeBitmapBounds();
computeTextPosition(getText());
if (mBitmap != null) {
canvas.save();
canvas.clipRect(mBitmapBounds);
Matrix m = new Matrix();
if (mUseOnlyDrawable) {
mPaint.setFilterBitmap(true);
m.setRectToRect(new RectF(0, 0, mBitmap.getWidth(), mBitmap.getHeight()),
new RectF(mBitmapBounds), Matrix.ScaleToFit.CENTER);
} else {
float scaleWidth = mBitmapBounds.width() / (float) mBitmap.getWidth();
float scaleHeight = mBitmapBounds.height() / (float) mBitmap.getHeight();
float scale = Math.max(scaleWidth, scaleHeight);
float dx = (mBitmapBounds.width() - (mBitmap.getWidth() * scale)) / 2f;
float dy = (mBitmapBounds.height() - (mBitmap.getHeight() * scale)) / 2f;
dx += mBitmapBounds.left;
dy += mBitmapBounds.top;
m.postScale(scale, scale);
m.postTranslate(dx, dy);
}
canvas.drawBitmap(mBitmap, m, mPaint);
canvas.restore();
}
if (!mUseOnlyDrawable) {
int startColor = Color.argb(0, 0, 0, 0);
int endColor = Color.argb(200, 0, 0, 0);
float start = getHeight() - 2 * mMargin - 2 * mTextSize;
float end = getHeight();
Shader shader = new LinearGradient(0, start, 0, end, startColor,
endColor, Shader.TileMode.CLAMP);
mPaint.setShader(shader);
float startGradient = 0;
if (getOrientation() == VERTICAL && isHalfImage()) {
startGradient = getWidth()/2;
}
canvas.drawRect(new RectF(startGradient, start, getWidth(), end), mPaint);
mPaint.setShader(null);
}
drawOutlinedText(canvas, getText());
}
}
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