Java Code Examples for android.text.TextPaint#setAlpha()

The following examples show how to use android.text.TextPaint#setAlpha() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: LatinKeyboard.java From hackerskeyboard with Apache License 2.0

6 votes

public SlidingLocaleDrawable(Drawable background, int width, int height) {
    mBackground = background;
    setDefaultBounds(mBackground);
    mWidth = width;
    mHeight = height;
    mTextPaint = new TextPaint();
    mTextPaint.setTextSize(getTextSizeFromTheme(android.R.style.TextAppearance_Medium, 18));
    mTextPaint.setColor(mRes.getColor(R.color.latinkeyboard_transparent));
    mTextPaint.setTextAlign(Align.CENTER);
    mTextPaint.setAlpha(OPACITY_FULLY_OPAQUE);
    mTextPaint.setAntiAlias(true);
    mMiddleX = (mWidth - mBackground.getIntrinsicWidth()) / 2;
    mLeftDrawable =
            mRes.getDrawable(R.drawable.sym_keyboard_feedback_language_arrows_left);
    mRightDrawable =
            mRes.getDrawable(R.drawable.sym_keyboard_feedback_language_arrows_right);
    mThreshold = ViewConfiguration.get(mContext).getScaledTouchSlop();
}

Example 2

Source File: MaterialDrawable.java From material-design-icons-for-android with Apache License 2.0

6 votes

public void setProperties(){
 	paint = new TextPaint();
 	if (theme < 0) {
     	getThemeIconColor();
     }
 	try {
 		paint.setTypeface(MaterialIcon.getTypeface(context));
 	} catch (Exception e) {
	e.printStackTrace();
}
 	paint.setStyle(Paint.Style.STROKE);
 	paint.setTextAlign(Paint.Align.CENTER);
 	paint.setUnderlineText(false);
 	paint.setColor(color);
 	paint.setAlpha(alpha);
 	paint.setAntiAlias(true);
 }

Example 3

Source File: AlphaSpan.java From styT with Apache License 2.0

5 votes

@Override
public void updateDrawState(@NonNull TextPaint paint)
{
    paint.setAlpha((int) (paint.getAlpha() * mValue));
    paint.bgColor = Color.argb((int) (Color.alpha(paint.bgColor) * mValue),
            Color.red(paint.bgColor), Color.green(paint.bgColor), Color.blue(paint.bgColor));
}

Example 4

Source File: SimpleTextCacheStuffer.java From DanDanPlayForAndroid with MIT License

5 votes

protected void drawText(BaseDanmaku danmaku, String lineText, Canvas canvas, float left, float top, TextPaint paint, boolean fromWorkerThread) {
    if (fromWorkerThread && danmaku instanceof SpecialDanmaku) {
        paint.setAlpha(255);
    }
    if (lineText != null) {
        canvas.drawText(lineText, left, top, paint);
    } else {
        canvas.drawText(danmaku.text.toString(), left, top, paint);
    }
}

Example 5

Source File: AlphaSpan.java From MaterialTapTargetPrompt with Apache License 2.0

5 votes

@Override
public void updateDrawState(@NonNull TextPaint paint)
{
    paint.setAlpha((int) (paint.getAlpha() * mValue));
    paint.bgColor = Color.argb((int) (Color.alpha(paint.bgColor) * mValue),
            Color.red(paint.bgColor), Color.green(paint.bgColor), Color.blue(paint.bgColor));
}

Example 6

Source File: AlphaSpanUnitTest.java From MaterialTapTargetPrompt with Apache License 2.0

5 votes

@Test
public void testAlphaSpan()
{
    final AlphaSpan alphaSpan = new AlphaSpan(0.5f);
    final TextPaint textPaint = new TextPaint();
    textPaint.setAlpha(200);
    textPaint.bgColor = Color.argb(100, 100, 100, 100);
    alphaSpan.updateDrawState(textPaint);
    assertEquals(100, textPaint.getAlpha());
    assertEquals(Color.argb(50, 100, 100, 100), textPaint.bgColor);
}

Example 7

Source File: PasswordEntry.java From android-proguards with Apache License 2.0

5 votes

/**
 * Progress through the morph:  0 = character, 1 = •
 */
void draw(Canvas canvas, TextPaint paint, CharSequence password,
          int index, float charWidth, float progress) {
    int alpha = paint.getAlpha();
    float x = charWidth * index;

    // draw the character
    canvas.save();
    float textScale = lerp(1f, textToMaskScale, progress);
    // scale character: shrinks to/grows from the mask's height
    canvas.scale(textScale, textScale, x + bounds.exactCenterX(), bounds.exactCenterY());
    // cross fade between the character/mask
    paint.setAlpha((int) lerp(alpha, 0, progress));
    // vertically move the character center toward/from the mask center
    canvas.drawText(password, index, index + 1,
            x, lerp(0f, textOffsetY, progress) / textScale, paint);
    canvas.restore();

    // draw the mask
    canvas.save();
    float maskScale = lerp(maskToTextScale, 1f, progress);
    // scale the mask: down from/up to the character width
    canvas.scale(maskScale, maskScale, x + bounds.exactCenterX(), bounds.exactCenterY());
    // cross fade between the mask/character
    paint.setAlpha((int) AnimUtils.lerp(0, alpha, progress));
    // vertically move the mask center from/toward the character center
    canvas.drawText(PASSWORD_MASK, 0, 1, x, -lerp(textOffsetY, 0f, progress), paint);
    canvas.restore();

    // restore the paint to how we found it
    paint.setAlpha(alpha);
}

Example 8

Source File: VoIPActivity.java From TelePlus-Android with GNU General Public License v2.0

4 votes

@Override
public void updateDrawState(TextPaint tp){
    tp.setAlpha(alpha);
}

Example 9

Source File: WaterMarkTextUtil.java From imsdk-android with MIT License

4 votes

/**
 * 生成水印文字图片
 */
public BitmapDrawable drawTextToBitmap(Context mContext, String gText) {

    try {
        TextPaint mTextPaint1 = new TextPaint(Paint.ANTI_ALIAS_FLAG);
        mTextPaint1.density = mContext.getResources().getDisplayMetrics().density;
        oneTextPx = Utils.sp2px(mContext, textSize);
        mTextPaint1.setTextSize(oneTextPx);
        //计算字长
        textLength = (int) mTextPaint1.measureText(gText);
        int stextLength = (int) mTextPaint1.measureText(sText);
        /**拿到字长之后，计算一下斜着显示文字的时候文字所占的长和高*/
        int witchPx = 0;
        int highPx = 0;
        /**默认一段文字的长和高计算*/
        if (sWitchPx == 0) {
            sWitchPx = measurementWitch(stextLength);
            sHigthPx = measurementHigth(stextLength);
        }
        /**传入的文字的长和高计算*/
        witchPx = measurementWitch(textLength);
        highPx = measurementHigth(textLength);
        /**计算显示完整所需占的画图长宽*/
        int bitmapWitch = witchPx + sWitchPx + 2 * oneTextPx + offset;
        int bitmaphigth = (highPx + oneTextPx) * 2;
        //设置画板的时候 增加一个字的长宽
        bitmap = Bitmap.createBitmap(bitmapWitch + right,
                bitmaphigth+(2*top), Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bitmap);
        canvas.drawColor(ContextCompat.getColor(mContext, R.color.atom_ui_chat_gray_bg));
        /**初始化画笔*/
        TextPaint mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
        mTextPaint.density = mContext.getResources().getDisplayMetrics().density;
        mTextPaint.setColor(Color.parseColor("#C4C4C4"));
        mTextPaint.setAlpha(90);
        mTextPaint.setStyle(Paint.Style.FILL);
        mTextPaint.setAntiAlias(true);
        mTextPaint.setTextAlign(Paint.Align.LEFT);
        mTextPaint.setFakeBoldText(false);
        mTextPaint.setTextSkewX(0);
        mTextPaint.setTextSize(oneTextPx);
        /**
         * ——————————————————————————————————>
         * |    1号绘制区域    |  间  |  2号   |
         * |   gText         |      | appName |
         * |  ①号起点位置     |  隔  |  ②起   |
         * ———————————————————————————————————
         * | 3号      | 间   |   4号绘制区域    |
         * | appName   |      |   gText        |
         * |  ③起     | 隔   |   ④号起        |
         * |———————————————————————————————————
         * V
         */
        /**方式二利用画布平移和旋转绘制*/
        /**先移动到①起点位置*/
        canvas.translate(oneTextPx,highPx+oneTextPx+top);
        /**旋转一定度数 绘制文字*/
        canvas.rotate(-rotate);
        canvas.drawText(gText,0,0,mTextPaint);
        /**恢复原来的度数 再移动画布原点到②号位置*/
        canvas.rotate(rotate);
        canvas.translate(witchPx+offset+oneTextPx,0);
        /**旋转一定度数 绘制文字*/
        canvas.rotate(-rotate);
        canvas.drawText(sText,0,0,mTextPaint);
        /**恢复原来的度数 再移动画布原点到③号位置*/
        canvas.rotate(rotate);
        canvas.translate(-(witchPx+offset+oneTextPx),oneTextPx+highPx+top);
        /**旋转一定度数 绘制文字*/
        canvas.rotate(-rotate);
        canvas.drawText(sText,0,0,mTextPaint);
        /**恢复原来的度数 再移动画布原点到④号位置*/
        canvas.rotate(rotate);
        canvas.translate(sWitchPx+offset+oneTextPx,0);
        /**旋转一定度数 绘制文字*/
        canvas.rotate(-rotate);
        canvas.drawText(gText,0,0,mTextPaint);
        /**保存画布*/
        canvas.save(Canvas.ALL_SAVE_FLAG);
        canvas.restore();
        //生成平铺的bitmapDrawable
        BitmapDrawable drawable = new BitmapDrawable(mContext.getResources(), bitmap);
        drawable.setTileModeXY(Shader.TileMode.REPEAT, Shader.TileMode.REPEAT);
        drawable.setDither(true);
        return drawable;
    } catch (Exception e) {

    }
    return null;

}

Example 10

Source File: Clock.java From Clock-view with Apache License 2.0

4 votes

private void drawHoursValues(Canvas canvas) {

        if (!showHoursValues)
            return;

        Rect rect = new Rect();

        TextPaint textPaint = new TextPaint();
        textPaint.setFlags(Paint.ANTI_ALIAS_FLAG);
        textPaint.setAntiAlias(true);
        textPaint.setColor(this.valuesColor);
        textPaint.setTypeface(this.valuesFont);
        textPaint.setTextSize(size * DEFAULT_HOURS_VALUES_TEXT_SIZE);

        float degreeSpace = 0f;
        if (showDegrees)
            degreeSpace = DEFAULT_DEGREE_STROKE_WIDTH + 0.06f;

        int rText = (int) (centerX - (size * DEFAULT_HOURS_VALUES_TEXT_SIZE) - (size * degreeSpace));

        for (int i = FULL_ANGLE; i > 0; i = i - valueStep.getId()) {

            int value = i / 30;
            String formatted;
            switch (valueType) {

                case roman:
                    formatted = ClockUtils.toRoman(value);
                    break;

                case arabic:
                    formatted = ClockUtils.toArabic(value);
                    break;

                default:
                    formatted = String.format(Locale.getDefault(), "%02d", value);
                    break;
            }

            if (valueDisposition.getId() == 0) {
                if ((i % REGULAR_ANGLE) == 0) {
                    textPaint.setTextSize(size * DEFAULT_HOURS_VALUES_TEXT_SIZE);
                    textPaint.setAlpha(FULL_ALPHA);
                } else {
                    textPaint.setTextSize(size * (DEFAULT_HOURS_VALUES_TEXT_SIZE - 0.03f));
                    textPaint.setAlpha(CUSTOM_ALPHA);
                }
            } else {
                textPaint.setTextSize(size * DEFAULT_HOURS_VALUES_TEXT_SIZE);
                textPaint.setAlpha(FULL_ALPHA);
            }


            int textX = (int) (centerX + rText * Math.cos(Math.toRadians(REGULAR_ANGLE - i)));
            int textY = (int) (centerX - rText * Math.sin(Math.toRadians(REGULAR_ANGLE - i)));
            textPaint.getTextBounds(formatted, 0, formatted.length(), rect);
            canvas.drawText(formatted, textX - rect.width() / formatted.length(), textY + rect.height() / formatted.length(), textPaint);
        }

    }

Example 11

Source File: VoIPActivity.java From TelePlus-Android with GNU General Public License v2.0

4 votes

@Override
public void updateDrawState(TextPaint tp){
    tp.setAlpha(alpha);
}

Example 12

Source File: BitmapUtils.java From AndroidWM with Apache License 2.0

4 votes

/**
 * build a bitmap from a text.
 *
 * @return {@link Bitmap} the bitmap return.
 */
public static Bitmap textAsBitmap(Context context, WatermarkText watermarkText) {
    TextPaint watermarkPaint = new TextPaint();
    watermarkPaint.setColor(watermarkText.getTextColor());
    watermarkPaint.setStyle(watermarkText.getTextStyle());

    if (watermarkText.getTextAlpha() >= 0 && watermarkText.getTextAlpha() <= 255) {
        watermarkPaint.setAlpha(watermarkText.getTextAlpha());
    }

    float value = (float) watermarkText.getTextSize();
    int pixel = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
            value, context.getResources().getDisplayMetrics());
    watermarkPaint.setTextSize(pixel);

    if (watermarkText.getTextShadowBlurRadius() != 0
            || watermarkText.getTextShadowXOffset() != 0
            || watermarkText.getTextShadowYOffset() != 0) {
        watermarkPaint.setShadowLayer(watermarkText.getTextShadowBlurRadius(),
                watermarkText.getTextShadowXOffset(),
                watermarkText.getTextShadowYOffset(),
                watermarkText.getTextShadowColor());
    }

    if (watermarkText.getTextFont() != 0) {
        Typeface typeface = ResourcesCompat.getFont(context, watermarkText.getTextFont());
        watermarkPaint.setTypeface(typeface);
    }

    watermarkPaint.setAntiAlias(true);
    watermarkPaint.setTextAlign(Paint.Align.LEFT);
    watermarkPaint.setStrokeWidth(5);

    float baseline = (int) (-watermarkPaint.ascent() + 1f);
    Rect bounds = new Rect();
    watermarkPaint.getTextBounds(watermarkText.getText(),
            0, watermarkText.getText().length(), bounds);

    int boundWidth = bounds.width() + 20;
    int mTextMaxWidth = (int) watermarkPaint.measureText(watermarkText.getText());
    if (boundWidth > mTextMaxWidth) {
        boundWidth = mTextMaxWidth;
    }
    StaticLayout staticLayout = new StaticLayout(watermarkText.getText(),
            0, watermarkText.getText().length(),
            watermarkPaint, mTextMaxWidth, android.text.Layout.Alignment.ALIGN_NORMAL, 2.0f,
            2.0f, false);

    int lineCount = staticLayout.getLineCount();
    int height = (int) (baseline + watermarkPaint.descent() + 3) * lineCount;
    Bitmap image = Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888);
    if (boundWidth > 0 && height > 0) {
        image = Bitmap.createBitmap(boundWidth, height, Bitmap.Config.ARGB_8888);
    }
    Canvas canvas = new Canvas(image);
    canvas.drawColor(watermarkText.getBackgroundColor());
    staticLayout.draw(canvas);
    return image;
}

Example 13

Source File: VoIPActivity.java From Telegram-FOSS with GNU General Public License v2.0

4 votes

@Override
public void updateDrawState(TextPaint tp) {
    tp.setAlpha(alpha);
}

Example 14

Source File: AlphaSpan.java From ifican with Apache License 2.0

4 votes

@Override
public void updateDrawState(TextPaint ds) {
    ds.setAlpha(mAlpha);
}

Example 15

Source File: VoIPActivity.java From Telegram with GNU General Public License v2.0

4 votes

@Override
public void updateDrawState(TextPaint tp) {
    tp.setAlpha(alpha);
}