Example usage for android.graphics Canvas drawColor

Introduction

In this page you can find the example usage for android.graphics Canvas drawColor.

Prototype

public void drawColor(@ColorInt int color) 

Source Link

Document

Fill the entire canvas' bitmap (restricted to the current clip) with the specified color, using srcover porterduff mode.

Usage

From source file:Main.java

public static Bitmap getColorPreviewBitmap(final Context context, final int color, final boolean border) {
    if (context == null)
        return null;
    final float density = context.getResources().getDisplayMetrics().density;
    final int width = (int) (32 * density), height = (int) (32 * density);

    final Bitmap bm = Bitmap.createBitmap(width, height, Config.ARGB_8888);
    final Canvas canvas = new Canvas(bm);

    final int rectrangleSize = (int) (density * 5);
    final int numRectanglesHorizontal = (int) Math.ceil(width / rectrangleSize);
    final int numRectanglesVertical = (int) Math.ceil(height / rectrangleSize);
    final Rect r = new Rect();
    boolean verticalStartWhite = true;
    for (int i = 0; i <= numRectanglesVertical; i++) {

        boolean isWhite = verticalStartWhite;
        for (int j = 0; j <= numRectanglesHorizontal; j++) {

            r.top = i * rectrangleSize;/*from w  w w .j a  v  a2s  .co  m*/
            r.left = j * rectrangleSize;
            r.bottom = r.top + rectrangleSize;
            r.right = r.left + rectrangleSize;
            final Paint paint = new Paint();
            paint.setColor(isWhite ? Color.WHITE : Color.GRAY);

            canvas.drawRect(r, paint);

            isWhite = !isWhite;
        }

        verticalStartWhite = !verticalStartWhite;

    }
    canvas.drawColor(color);
    if (border) {
        final Paint paint = new Paint();
        paint.setColor(Color.WHITE);
        paint.setStrokeWidth(1f * density);
        final float[] points = new float[] { 0, 0, width, 0, 0, 0, 0, height, width, 0, width, height, 0,
                height, width, height };
        canvas.drawLines(points, paint);
    }
    return bm;
}

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From source file:com.tr4android.support.extension.drawable.ColorTransitionDrawable.java

@Override
public void draw(Canvas canvas) {
    canvas.drawColor(mColor);
}

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From source file:de.bahnhoefe.deutschlands.bahnhofsfotos.notification.NearbyBahnhofWithPhotoNotificationManager.java

/**
 * Construct a Bitmap object from a given drawable resource ID.
 *
 * @param id the resource ID denoting a drawable resource
 * @return the Bitmap. May be null.//from   w  w w.j  ava  2s .c om
 */
@Nullable
private Bitmap getBitmapFromResource(int id) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        Drawable vectorDrawable = context.getDrawable(id);
        int h = 400;
        int w = 400;
        vectorDrawable.setBounds(0, 0, w, h);
        Bitmap bm = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bm);
        canvas.drawColor(Color.WHITE);
        vectorDrawable.draw(canvas);
        return bm;
    } else
        return null;
}

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From source file:com.jamessimshaw.wallpaperhelper.datasources.WallpaperFileHelper.java

public Wallpaper loadWallpaper(Context context, boolean isLandscape) {
    Bitmap bitmap;/*from ww  w .ja  v a  2  s  . c om*/
    String filename = isLandscape ? LANDSCAPE_FILENAME : PORTRAIT_FILENAME;

    try {
        //TODO: Set this up to be an async task
        FileInputStream fileInputStream = context.openFileInput(filename);
        bitmap = BitmapFactory.decodeStream(fileInputStream);
        fileInputStream.close();
    } catch (IOException e) {
        //Set a default Wallpaper of a black screen and send a notification
        Bitmap.Config bitmapOptions = Bitmap.Config.ARGB_8888;
        bitmap = Bitmap.createBitmap(100, 100, bitmapOptions);
        Canvas canvas = new Canvas(bitmap);
        canvas.drawColor(Color.BLACK);

        Intent settingsIntent = new Intent(context, SettingsActivity.class);
        PendingIntent notificationIntent = PendingIntent.getActivity(context, 0, settingsIntent,
                PendingIntent.FLAG_UPDATE_CURRENT);

        String notificationString = isLandscape ? context.getString(R.string.noLandscapeImage)
                : context.getString(R.string.noPortraitImage);

        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(context)
                .setSmallIcon(R.mipmap.ic_notification_small)
                .setContentTitle(context.getString(R.string.app_name)).setContentText(notificationString)
                .setContentIntent(notificationIntent);

        int notificationId = 1;
        NotificationManager manager = (NotificationManager) context
                .getSystemService(Context.NOTIFICATION_SERVICE);
        manager.notify(notificationId, notificationBuilder.build());
    }

    return new Wallpaper(bitmap, isLandscape);
}

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From source file:im.neon.util.VectorUtils.java

/**
 * Create an avatar bitmap from a text.//from   w  w  w .ja  v a 2s .c  o m
 *
 * @param backgroundColor the background color.
 * @param text            the text to display.
 * @param pixelsSide      the avatar side in pixels
 * @return the generated bitmap
 */
private static Bitmap createAvatar(int backgroundColor, String text, int pixelsSide) {
    android.graphics.Bitmap.Config bitmapConfig = android.graphics.Bitmap.Config.ARGB_8888;

    Bitmap bitmap = Bitmap.createBitmap(pixelsSide, pixelsSide, bitmapConfig);
    Canvas canvas = new Canvas(bitmap);

    canvas.drawColor(backgroundColor);

    // prepare the text drawing
    Paint textPaint = new Paint();
    textPaint.setTypeface(Typeface.create(Typeface.DEFAULT, Typeface.BOLD));
    textPaint.setColor(Color.WHITE);
    // the text size is proportional to the avatar size.
    // by default, the avatar size is 42dp, the text size is 28 dp (not sp because it has to be fixed).
    textPaint.setTextSize(pixelsSide * 2 / 3);

    // get its size
    Rect textBounds = new Rect();
    textPaint.getTextBounds(text, 0, text.length(), textBounds);

    // draw the text in center
    canvas.drawText(text, (canvas.getWidth() - textBounds.width() - textBounds.left) / 2,
            (canvas.getHeight() + textBounds.height() - textBounds.bottom) / 2, textPaint);

    // Return the avatar
    return bitmap;
}

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From source file:io.plaidapp.ui.widget.CutoutTextView.java

private void createBitmap() {
    if (cutout != null && !cutout.isRecycled()) {
        cutout.recycle();//from   w ww.j  ava  2 s. c om
    }
    cutout = Bitmap.createBitmap(getWidth(), getHeight(), Bitmap.Config.ARGB_8888);
    cutout.setHasAlpha(true);
    Canvas cutoutCanvas = new Canvas(cutout);
    cutoutCanvas.drawColor(foregroundColor);

    // this is the magic  Clear mode punches out the bitmap
    textPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
    cutoutCanvas.drawText(text, textX, textY, textPaint);
}

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From source file:com.linkbubble.util.Util.java

/**
 * Returns a bitmap suitable for the all apps view.
 *//*from w w  w.  j  a v a  2 s . c  om*/
static Bitmap createIconBitmap(Drawable icon, Context context) {
    synchronized (sCanvas) { // we share the statics :-(
        if (sIconWidth == -1) {
            initStatics(context);
        }

        int width = sIconWidth;
        int height = sIconHeight;

        if (icon instanceof PaintDrawable) {
            PaintDrawable painter = (PaintDrawable) icon;
            painter.setIntrinsicWidth(width);
            painter.setIntrinsicHeight(height);
        } else if (icon instanceof BitmapDrawable) {
            // Ensure the bitmap has a density.
            BitmapDrawable bitmapDrawable = (BitmapDrawable) icon;
            Bitmap bitmap = bitmapDrawable.getBitmap();
            if (bitmap.getDensity() == Bitmap.DENSITY_NONE) {
                bitmapDrawable.setTargetDensity(context.getResources().getDisplayMetrics());
            }
        }
        int sourceWidth = icon.getIntrinsicWidth();
        int sourceHeight = icon.getIntrinsicHeight();
        if (sourceWidth > 0 && sourceHeight > 0) {
            // There are intrinsic sizes.
            if (width < sourceWidth || height < sourceHeight) {
                // It's too big, scale it down.
                final float ratio = (float) sourceWidth / sourceHeight;
                if (sourceWidth > sourceHeight) {
                    height = (int) (width / ratio);
                } else if (sourceHeight > sourceWidth) {
                    width = (int) (height * ratio);
                }
            } else if (sourceWidth < width && sourceHeight < height) {
                // Don't scale up the icon
                width = sourceWidth;
                height = sourceHeight;
            }
        }

        // no intrinsic size --> use default size
        int textureWidth = sIconTextureWidth;
        int textureHeight = sIconTextureHeight;

        final Bitmap bitmap = Bitmap.createBitmap(textureWidth, textureHeight, Bitmap.Config.ARGB_8888);
        final Canvas canvas = sCanvas;
        canvas.setBitmap(bitmap);

        final int left = (textureWidth - width) / 2;
        final int top = (textureHeight - height) / 2;

        @SuppressWarnings("all") // suppress dead code warning
        final boolean debug = false;
        if (debug) {
            // draw a big box for the icon for debugging
            canvas.drawColor(sColors[sColorIndex]);
            if (++sColorIndex >= sColors.length)
                sColorIndex = 0;
            Paint debugPaint = new Paint();
            debugPaint.setColor(0xffcccc00);
            canvas.drawRect(left, top, left + width, top + height, debugPaint);
        }

        sOldBounds.set(icon.getBounds());
        icon.setBounds(left, top, left + width, top + height);
        icon.draw(canvas);
        icon.setBounds(sOldBounds);
        canvas.setBitmap(null);

        return bitmap;
    }
}

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From source file:com.lithidsw.wallbox.app.colorwall.ColorWallFrag.java

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case R.id.action_apply:
        try {//from   w  w  w.j a v a 2 s.c o m
            Bitmap bit = Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888);
            Canvas can = new Canvas(bit);
            can.drawColor(mColor);
            wm.setBitmap(bit);
            Toast.makeText(fa, "Current color wallpaper applied!", Toast.LENGTH_SHORT).show();
        } catch (IOException e) {
            e.printStackTrace();
            Toast.makeText(fa, "Current color wallpaper had an error!", Toast.LENGTH_SHORT).show();
        }
        return true;
    default:
        return false;
    }
}

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From source file:net.simno.dmach.ui.view.SettingView.java

@Override
protected void onDraw(Canvas canvas) {
    canvas.drawColor(backgroundColor);
    if (!TextUtils.isEmpty(hText)) {
        canvas.drawText(hText, originX, originY, textPaint);
    }//from ww  w .  ja v  a  2s.  c o  m
    if (!TextUtils.isEmpty(vText)) {
        canvas.drawTextOnPath(vText, path, hOffset, vOffset, textPaint);
    }
    canvas.drawCircle(x, y, circleRadius, shapePaint);
}

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From source file:com.hippo.ehviewer.widget.GalleryGuideView.java

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    canvas.drawColor(mBgColor);
    if (0 == mStep) {
        canvas.drawLines(mPoints, mPaint);
    }/*from   w  w w .  ja va 2s. c  o  m*/
}

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