Example usage for android.graphics Bitmap eraseColor

List of usage examples for android.graphics Bitmap eraseColor

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Introduction

In this page you can find the example usage for android.graphics Bitmap eraseColor.

Prototype

public void eraseColor(@ColorInt int c)

Source Link

Document

Fills the bitmap's pixels with the specified Color .

Usage

From source file:com.liwn.zzl.markbit.DrawOptionsMenuActivity.java

protected void initialiseNewBitmap() {
    float width = MarkBitApplication.BIT_LCD_WIDTH;
    float height = MarkBitApplication.BIT_LCD_HEIGHT;
    Log.d("PAINTROID - MFA", "init new bitmap with: w: " + width + " h:" + height);
    Bitmap bitmap = Bitmap.createBitmap((int) width, (int) height, Config.ARGB_8888);
    bitmap.eraseColor(Color.TRANSPARENT);
    initialiseWithBitmap(bitmap);/*from www.  ja v a 2s .co  m*/
}

From source file:ch.carteggio.ui.ConversationIconLoader.java

/**
 * Calculates a bitmap with a color and a capital letter for contacts without picture.
 *//* w  w  w. j  a  va  2s  .  c  om*/
private Bitmap calculateFallbackBitmap(String emails[]) {
    Bitmap result = Bitmap.createBitmap(mPictureSizeInPx, mPictureSizeInPx, Bitmap.Config.ARGB_8888);

    Canvas canvas = new Canvas(result);

    int rgb = CONTACT_DUMMY_COLORS_ARGB[0];

    if (emails.length > 0) {
        calcUnknownContactColor(emails[0]);
    }

    result.eraseColor(rgb);

    String letter = FALLBACK_CONTACT_LETTER;

    Paint paint = new Paint();
    paint.setAntiAlias(true);
    paint.setStyle(Paint.Style.FILL);
    paint.setARGB(255, 255, 255, 255);
    paint.setTextSize(mPictureSizeInPx * 3 / 4); // just scale this down a bit
    Rect rect = new Rect();
    paint.getTextBounds(letter, 0, 1, rect);
    float width = paint.measureText(letter);
    canvas.drawText(letter, (mPictureSizeInPx / 2f) - (width / 2f),
            (mPictureSizeInPx / 2f) + (rect.height() / 2f), paint);

    return result;
}

From source file:Main.java

/**
 * Load the image at {@code imagePath} as a {@link Bitmap}, scaling it to
 * the specified size and preserving the aspect ratio.
 * @param imagePath Path of the image to load.
 * @param width Required width of the resulting {@link Bitmap}.
 * @param height Required height of the resulting {@link Bitmap}.
 * @param fill {@code true} to fill the empty space with transparent color.
 * @param crop {@code true} to crop the image, {@code false} to resize without cutting the image.
 * @return {@link Bitmap} representing the image at {@code imagePath}.
 *//*from  w  w  w  .  j ava2  s  .  co  m*/
public static Bitmap loadResizedBitmap(String imagePath, int width, int height, boolean fill, boolean crop) {
    Bitmap retVal;

    BitmapFactory.Options opts = new BitmapFactory.Options();
    opts.inSampleSize = getScale(imagePath, width, height);
    opts.inJustDecodeBounds = false;

    Bitmap image = BitmapFactory.decodeFile(imagePath, opts);

    if (image == null) {
        if (imagePath != null) {
            Log.w("Helper", "Cannot decode " + imagePath);
        } else {
            Log.w("Helper", "Path is null: Cannot decode");
        }
        return null;
    }

    if (image.getWidth() != width || image.getHeight() != height) {
        //Image need to be resized.
        int scaledWidth = (image.getWidth() * height) / image.getHeight();
        int scaledHeight;
        if ((crop && scaledWidth > width) || (!crop && scaledWidth < width)) {
            scaledHeight = height;
        } else {
            scaledWidth = width;
            scaledHeight = (image.getHeight() * width) / image.getWidth();
        }

        Rect src = new Rect(0, 0, image.getWidth(), image.getHeight());
        Rect dst = new Rect(0, 0, scaledWidth, scaledHeight);

        if (fill) {
            retVal = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
            dst.offset((width - scaledWidth) / 2, (height - scaledHeight) / 2);
        } else {
            retVal = Bitmap.createBitmap(scaledWidth, scaledHeight, Bitmap.Config.ARGB_8888);
        }
        retVal.eraseColor(Color.TRANSPARENT);

        synchronized (canvas) {
            if (antiAliasPaint == null) {
                antiAliasPaint = new Paint();
                antiAliasPaint.setAntiAlias(true);
                antiAliasPaint.setFilterBitmap(true);
                antiAliasPaint.setDither(true);
            }
            canvas.setBitmap(retVal);
            canvas.drawBitmap(image, src, dst, antiAliasPaint);
        }

        image.recycle();
    } else {
        //No need to scale.
        retVal = image;
    }

    return retVal;
}

From source file:com.facebook.FacebookActivityTestCase.java

protected Bitmap createTestBitmap(int size) {
    Bitmap image = Bitmap.createBitmap(size, size, Bitmap.Config.RGB_565);
    image.eraseColor(Color.BLUE);
    return image;
}

From source file:org.thoughtcrime.securesms.scribbles.widget.MotionView.java

/**
 * as a side effect - the method deselects Entity (if any selected)
 * @return bitmap with all the Entities at their current positions
 *//*www .  j  a  va2  s  .c o  m*/
public Bitmap getThumbnailImage() {
    selectEntity(null, false);

    Bitmap bmp = Bitmap.createBitmap(getWidth(), getHeight(), Bitmap.Config.ARGB_8888);
    // IMPORTANT: always create white background, cos if the image is saved in JPEG format,
    // which doesn't have transparent pixels, the background will be black
    bmp.eraseColor(Color.WHITE);
    Canvas canvas = new Canvas(bmp);
    drawAllEntities(canvas);

    return bmp;
}

From source file:kr.wdream.storyshop.AndroidUtilities.java

private static Intent createShortcutIntent(long did, boolean forDelete) {
    Intent shortcutIntent = new Intent(ApplicationLoader.applicationContext, OpenChatReceiver.class);

    int lower_id = (int) did;
    int high_id = (int) (did >> 32);

    TLRPC.User user = null;//  w w w  . ja  va2  s  . com
    TLRPC.Chat chat = null;
    if (lower_id == 0) {
        shortcutIntent.putExtra("encId", high_id);
        TLRPC.EncryptedChat encryptedChat = MessagesController.getInstance().getEncryptedChat(high_id);
        if (encryptedChat == null) {
            return null;
        }
        user = MessagesController.getInstance().getUser(encryptedChat.user_id);
    } else if (lower_id > 0) {
        shortcutIntent.putExtra("userId", lower_id);
        user = MessagesController.getInstance().getUser(lower_id);
    } else if (lower_id < 0) {
        chat = MessagesController.getInstance().getChat(-lower_id);
        shortcutIntent.putExtra("chatId", -lower_id);
    } else {
        return null;
    }
    if (user == null && chat == null) {
        return null;
    }

    String name;
    TLRPC.FileLocation photo = null;

    if (user != null) {
        name = ContactsController.formatName(user.first_name, user.last_name);
        if (user.photo != null) {
            photo = user.photo.photo_small;
        }
    } else {
        name = chat.title;
        if (chat.photo != null) {
            photo = chat.photo.photo_small;
        }
    }

    shortcutIntent.setAction("com.tmessages.openchat" + did);
    shortcutIntent.addFlags(0x4000000);

    Intent addIntent = new Intent();
    addIntent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
    addIntent.putExtra(Intent.EXTRA_SHORTCUT_NAME, name);
    addIntent.putExtra("duplicate", false);
    if (!forDelete) {
        Bitmap bitmap = null;
        if (photo != null) {
            try {
                File path = FileLoader.getPathToAttach(photo, true);
                bitmap = BitmapFactory.decodeFile(path.toString());
                if (bitmap != null) {
                    int size = AndroidUtilities.dp(58);
                    Bitmap result = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
                    result.eraseColor(Color.TRANSPARENT);
                    Canvas canvas = new Canvas(result);
                    BitmapShader shader = new BitmapShader(bitmap, Shader.TileMode.CLAMP,
                            Shader.TileMode.CLAMP);
                    if (roundPaint == null) {
                        roundPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
                        bitmapRect = new RectF();
                    }
                    float scale = size / (float) bitmap.getWidth();
                    canvas.save();
                    canvas.scale(scale, scale);
                    roundPaint.setShader(shader);
                    bitmapRect.set(0, 0, bitmap.getWidth(), bitmap.getHeight());
                    canvas.drawRoundRect(bitmapRect, bitmap.getWidth(), bitmap.getHeight(), roundPaint);
                    canvas.restore();
                    Drawable drawable = ApplicationLoader.applicationContext.getResources()
                            .getDrawable(R.drawable.book_logo);
                    int w = AndroidUtilities.dp(15);
                    int left = size - w - AndroidUtilities.dp(2);
                    int top = size - w - AndroidUtilities.dp(2);
                    drawable.setBounds(left, top, left + w, top + w);
                    drawable.draw(canvas);
                    try {
                        canvas.setBitmap(null);
                    } catch (Exception e) {
                        //don't promt, this will crash on 2.x
                    }
                    bitmap = result;
                }
            } catch (Throwable e) {
                FileLog.e("tmessages", e);
            }
        }
        if (bitmap != null) {
            addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON, bitmap);
        } else {
            if (user != null) {
                if (user.bot) {
                    addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource
                            .fromContext(ApplicationLoader.applicationContext, R.drawable.book_bot));
                } else {
                    addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource
                            .fromContext(ApplicationLoader.applicationContext, R.drawable.book_user));
                }
            } else if (chat != null) {
                if (ChatObject.isChannel(chat) && !chat.megagroup) {
                    addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource
                            .fromContext(ApplicationLoader.applicationContext, R.drawable.book_channel));
                } else {
                    addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource
                            .fromContext(ApplicationLoader.applicationContext, R.drawable.book_group));
                }
            }
        }
    }
    return addIntent;
}

From source file:com.ferdi2005.secondgram.AndroidUtilities.java

private static Intent createShortcutIntent(long did, boolean forDelete) {
    Intent shortcutIntent = new Intent(ApplicationLoader.applicationContext, OpenChatReceiver.class);

    int lower_id = (int) did;
    int high_id = (int) (did >> 32);

    TLRPC.User user = null;//from w  ww. ja  va 2  s  .com
    TLRPC.Chat chat = null;
    if (lower_id == 0) {
        shortcutIntent.putExtra("encId", high_id);
        TLRPC.EncryptedChat encryptedChat = MessagesController.getInstance().getEncryptedChat(high_id);
        if (encryptedChat == null) {
            return null;
        }
        user = MessagesController.getInstance().getUser(encryptedChat.user_id);
    } else if (lower_id > 0) {
        shortcutIntent.putExtra("userId", lower_id);
        user = MessagesController.getInstance().getUser(lower_id);
    } else if (lower_id < 0) {
        chat = MessagesController.getInstance().getChat(-lower_id);
        shortcutIntent.putExtra("chatId", -lower_id);
    } else {
        return null;
    }
    if (user == null && chat == null) {
        return null;
    }

    String name;
    TLRPC.FileLocation photo = null;

    if (user != null) {
        name = ContactsController.formatName(user.first_name, user.last_name);
        if (user.photo != null) {
            photo = user.photo.photo_small;
        }
    } else {
        name = chat.title;
        if (chat.photo != null) {
            photo = chat.photo.photo_small;
        }
    }

    shortcutIntent.setAction("com.tmessages.openchat" + did);
    shortcutIntent.addFlags(0x4000000);

    Intent addIntent = new Intent();
    addIntent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
    addIntent.putExtra(Intent.EXTRA_SHORTCUT_NAME, name);
    addIntent.putExtra("duplicate", false);
    if (!forDelete) {
        Bitmap bitmap = null;
        if (photo != null) {
            try {
                File path = FileLoader.getPathToAttach(photo, true);
                bitmap = BitmapFactory.decodeFile(path.toString());
                if (bitmap != null) {
                    int size = AndroidUtilities.dp(58);
                    Bitmap result = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
                    result.eraseColor(Color.TRANSPARENT);
                    Canvas canvas = new Canvas(result);
                    BitmapShader shader = new BitmapShader(bitmap, Shader.TileMode.CLAMP,
                            Shader.TileMode.CLAMP);
                    if (roundPaint == null) {
                        roundPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
                        bitmapRect = new RectF();
                    }
                    float scale = size / (float) bitmap.getWidth();
                    canvas.save();
                    canvas.scale(scale, scale);
                    roundPaint.setShader(shader);
                    bitmapRect.set(0, 0, bitmap.getWidth(), bitmap.getHeight());
                    canvas.drawRoundRect(bitmapRect, bitmap.getWidth(), bitmap.getHeight(), roundPaint);
                    canvas.restore();
                    Drawable drawable = ApplicationLoader.applicationContext.getResources()
                            .getDrawable(R.drawable.book_logo);
                    int w = AndroidUtilities.dp(15);
                    int left = size - w - AndroidUtilities.dp(2);
                    int top = size - w - AndroidUtilities.dp(2);
                    drawable.setBounds(left, top, left + w, top + w);
                    drawable.draw(canvas);
                    try {
                        canvas.setBitmap(null);
                    } catch (Exception e) {
                        //don't promt, this will crash on 2.x
                    }
                    bitmap = result;
                }
            } catch (Throwable e) {
                FileLog.e(e);
            }
        }
        if (bitmap != null) {
            addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON, bitmap);
        } else {
            if (user != null) {
                if (user.bot) {
                    addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource
                            .fromContext(ApplicationLoader.applicationContext, R.drawable.book_bot));
                } else {
                    addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource
                            .fromContext(ApplicationLoader.applicationContext, R.drawable.book_user));
                }
            } else if (chat != null) {
                if (ChatObject.isChannel(chat) && !chat.megagroup) {
                    addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource
                            .fromContext(ApplicationLoader.applicationContext, R.drawable.book_channel));
                } else {
                    addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource
                            .fromContext(ApplicationLoader.applicationContext, R.drawable.book_group));
                }
            }
        }
    }
    return addIntent;
}

From source file:org.stockchart.StockChartView.java

private void drawClear(Bitmap b) {
    b.eraseColor(fClearColor);
}

From source file:Main.java

/**
 * Load the image at {@code imagePath} as a {@link Bitmap}, scaling it to
 * the specified size and preserving the aspect ratio.
 * @param imagePath Path of the image to load.
 * @param width Required width of the resulting {@link Bitmap}.
 * @param height Required height of the resulting {@link Bitmap}.
 * @param fill {@code true} to fill the empty space with transparent color.
 * @param crop {@code true} to crop the image, {@code false} to resize without cutting the image.
 * @return {@link Bitmap} representing the image at {@code imagePath}.
 *//*from w  w w  . j a va  2s  .  c  om*/
public static Bitmap loadResizedBitmap(String imagePath, int width, int height, boolean fill, boolean crop) {
    Bitmap retVal;

    BitmapFactory.Options opts = new BitmapFactory.Options();
    opts.inSampleSize = getScale(imagePath, width, height);
    opts.inJustDecodeBounds = false;

    Bitmap image = BitmapFactory.decodeFile(imagePath, opts);

    if (image == null) {
        return null;
    }

    if (image.getWidth() != width || image.getHeight() != height) {
        //Image need to be resized.
        //         int scaledWidth = image.getWidth();
        //         int scaledHeight = image.getHeight();
        //         final float factorWidth = scaledWidth / width;
        //         final float factorHeight = scaledHeight / height;
        //final float factor = (scaledWidth / width) - (scaledHeight / height);
        //         final long factor = (scaledWidth * height) - (scaledHeight * width);
        //         if ((crop && factor > 0) || (factor < 0)) {
        //            scaledHeight = (scaledHeight * width) / scaledWidth;
        //            scaledWidth = width;
        //         } else {
        //            scaledWidth = (scaledWidth * height) / scaledHeight;
        //            scaledHeight = height;
        //         }
        int scaledWidth = (image.getWidth() * height) / image.getHeight();
        int scaledHeight; // = (image.getHeight() * width) / image.getWidth();
        if ((crop && scaledWidth > width) || (!crop && scaledWidth < width)) {
            scaledHeight = height;
        } else {
            scaledWidth = width;
            scaledHeight = (image.getHeight() * width) / image.getWidth();
        }
        //image = Bitmap.createScaledBitmap(image, scaledWidth, scaledHeight, true);

        Rect src = new Rect(0, 0, image.getWidth(), image.getHeight());
        Rect dst = new Rect(0, 0, scaledWidth, scaledHeight);

        if (fill) {
            retVal = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
            dst.offset((width - scaledWidth) / 2, (height - scaledHeight) / 2);
        } else {
            retVal = Bitmap.createBitmap(scaledWidth, scaledHeight, Bitmap.Config.ARGB_8888);
        }
        retVal.eraseColor(Color.TRANSPARENT);

        synchronized (canvas) {
            if (antiAliasPaint == null) {
                antiAliasPaint = new Paint();
                antiAliasPaint.setAntiAlias(true);
                antiAliasPaint.setFilterBitmap(true);
                antiAliasPaint.setDither(true);
            }
            canvas.setBitmap(retVal);
            canvas.drawBitmap(image, src, dst, antiAliasPaint);
        }

        image.recycle();
    } else {
        //No need to scale.
        retVal = image;
    }

    return retVal;
}