Home | History | Annotate | Download | only in calendar 
      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.calendar;
     18 
     19 import android.content.Context;
     20 import android.graphics.Canvas;
     21 import android.graphics.Paint;
     22 import android.graphics.Paint.Style;
     23 import android.util.AttributeSet;
     24 import android.view.View;
     25 
     26 
     27 
     28 
     29 /**
     30  * A custom view for a color chip for an event that can be drawn differently
     31  * accroding to the event's status.
     32  *
     33  */
     34 public class ColorChipView extends View {
     35 
     36     private static final String TAG = "ColorChipView";
     37     // Style of drawing
     38     // Full rectangle for accepted events
     39     // Border for tentative events
     40     // Cross-hatched with 50% transparency for declined events
     41 
     42     public static final int DRAW_FULL = 0;
     43     public static final int DRAW_BORDER = 1;
     44     public static final int DRAW_FADED = 2;
     45 
     46     private int mDrawStyle = DRAW_FULL;
     47     private float mDefStrokeWidth;
     48     private Paint mPaint;
     49 
     50     private static final int DEF_BORDER_WIDTH = 4;
     51 
     52     int mBorderWidth = DEF_BORDER_WIDTH;
     53 
     54     int mColor;
     55 
     56     public ColorChipView(Context context) {
     57         super(context);
     58         init();
     59     }
     60 
     61     public ColorChipView(Context context, AttributeSet attrs) {
     62         super(context, attrs);
     63         init();
     64     }
     65 
     66     private void init() {
     67         mPaint = new Paint();
     68         mDefStrokeWidth = mPaint.getStrokeWidth();
     69         mPaint.setStyle(Style.FILL_AND_STROKE);
     70     }
     71 
     72 
     73     public void setDrawStyle(int style) {
     74         if (style != DRAW_FULL && style != DRAW_BORDER && style != DRAW_FADED) {
     75             return;
     76         }
     77         mDrawStyle = style;
     78         invalidate();
     79     }
     80 
     81     public void setBorderWidth(int width) {
     82         if (width >= 0) {
     83             mBorderWidth = width;
     84             invalidate();
     85         }
     86     }
     87 
     88     public void setColor(int color) {
     89         mColor = color;
     90         invalidate();
     91     }
     92 
     93     @Override
     94     public void onDraw(Canvas c) {
     95 
     96         int right = getWidth() - 1;
     97         int bottom = getHeight() - 1;
     98         mPaint.setColor(mDrawStyle == DRAW_FADED ?
     99                 Utils.getDeclinedColorFromColor(mColor) : mColor);
    100 
    101         switch (mDrawStyle) {
    102             case DRAW_FADED:
    103             case DRAW_FULL:
    104                 mPaint.setStrokeWidth(mDefStrokeWidth);
    105                 c.drawRect(0, 0, right, bottom, mPaint);
    106                 break;
    107             case DRAW_BORDER:
    108                 if (mBorderWidth <= 0) {
    109                     return;
    110                 }
    111                 int halfBorderWidth = mBorderWidth / 2;
    112                 int top = halfBorderWidth;
    113                 int left = halfBorderWidth;
    114                 mPaint.setStrokeWidth(mBorderWidth);
    115 
    116                 float[] lines = new float[16];
    117                 int ptr = 0;
    118                 lines [ptr++] = 0;
    119                 lines [ptr++] = top;
    120                 lines [ptr++] = right;
    121                 lines [ptr++] = top;
    122                 lines [ptr++] = 0;
    123                 lines [ptr++] = bottom - halfBorderWidth;
    124                 lines [ptr++] = right;
    125                 lines [ptr++] = bottom - halfBorderWidth;
    126                 lines [ptr++] = left;
    127                 lines [ptr++] = 0;
    128                 lines [ptr++] = left;
    129                 lines [ptr++] = bottom;
    130                 lines [ptr++] = right - halfBorderWidth;
    131                 lines [ptr++] = 0;
    132                 lines [ptr++] = right - halfBorderWidth;
    133                 lines [ptr++] = bottom;
    134                 c.drawLines(lines, mPaint);
    135                 break;
    136         }
    137     }
    138 }
    139