Example usage for android.graphics Canvas drawText

Introduction

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

Prototype

public void drawText(@NonNull CharSequence text, int start, int end, float x, float y, @NonNull Paint paint) 

Source Link

Document

Draw the specified range of text, specified by start/end, with its origin at (x,y), in the specified Paint.

Usage

From source file:net.opacapp.multilinecollapsingtoolbar.CollapsingTextHelper.java

private void ensureCollapsedTexture() {
    if (mCollapsedTitleTexture != null || mCollapsedBounds.isEmpty() || TextUtils.isEmpty(mTextToDraw)) {
        return;/*w ww.  ja  v  a2  s . c  o  m*/
    }
    calculateOffsets(0f);
    final int w = Math.round(mTextPaint.measureText(mTextToDraw, 0, mTextToDraw.length()));
    final int h = Math.round(mTextPaint.descent() - mTextPaint.ascent());
    if (w <= 0 && h <= 0) {
        return; // If the width or height are 0, return
    }
    mCollapsedTitleTexture = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
    Canvas c = new Canvas(mCollapsedTitleTexture);
    c.drawText(mTextToDrawCollapsed, 0, mTextToDrawCollapsed.length(), 0, -mTextPaint.ascent() / mScale,
            mTextPaint);
    if (mTexturePaint == null) {
        // Make sure we have a paint
        mTexturePaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
    }
}

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From source file:net.opacapp.multilinecollapsingtoolbar.CollapsingTextHelper.java

private void ensureCrossSectionTexture() {
    if (mCrossSectionTitleTexture != null || mCollapsedBounds.isEmpty() || TextUtils.isEmpty(mTextToDraw)) {
        return;/*from   w ww. j av  a  2s.  c om*/
    }
    calculateOffsets(0f);
    final int w = Math
            .round(mTextPaint.measureText(mTextToDraw, mTextLayout.getLineStart(0), mTextLayout.getLineEnd(0)));
    final int h = Math.round(mTextPaint.descent() - mTextPaint.ascent());
    if (w <= 0 && h <= 0) {
        return; // If the width or height are 0, return
    }
    mCrossSectionTitleTexture = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
    Canvas c = new Canvas(mCrossSectionTitleTexture);
    c.drawText(mTextToDraw, mTextLayout.getLineStart(0), mTextLayout.getLineEnd(0), 0,
            -mTextPaint.ascent() / mScale, mTextPaint);
    if (mTexturePaint == null) {
        // Make sure we have a paint
        mTexturePaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
    }
}

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From source file:android.support.design.widget.CustomCollapsingTextHelper.java

private void ensureExpandedTexture() {
    if (mExpandedTitleTexture != null || mExpandedBounds.isEmpty() || TextUtils.isEmpty(mTextToDraw)) {
        return;//  w ww  .ja  v  a 2s  . c o m
    }

    calculateOffsets(0f);
    mTextureAscent = mTitlePaint.ascent();
    mTextureDescent = mTitlePaint.descent();

    final int w = Math.round(mTitlePaint.measureText(mTextToDraw, 0, mTextToDraw.length()));
    final int h = Math.round(mTextureDescent - mTextureAscent);

    if (w <= 0 || h <= 0) {
        return; // If the width or height are 0, return
    }

    mExpandedTitleTexture = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);

    Canvas c = new Canvas(mExpandedTitleTexture);
    c.drawText(mTextToDraw, 0, mTextToDraw.length(), 0, h - mTitlePaint.descent(), mTitlePaint);

    if (mTexturePaint == null) {
        // Make sure we have a paint
        mTexturePaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
    }
}

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From source file:com.googlecode.eyesfree.example.bargraph.BarGraphView.java

/**
 * Draws the title of the bar graph.//from  ww  w .  j av  a 2  s  . com
 *
 * @param c The canvas on which to draw.
 */
private void drawTitle(Canvas c) {
    mPaint.reset();
    mPaint.setAntiAlias(true);
    mPaint.setColor(mTitleColor);
    mPaint.setTextSize(mTitleSize);
    mPaint.setTextAlign(Align.CENTER);
    mPaint.getTextBounds(mTitle.toString(), 0, mTitle.length(), mTempRect);

    final float x = (getWidth() / 2.0f);
    final float y = mTempRect.height();
    c.drawText(mTitle, 0, mTitle.length(), x, y, mPaint);
}

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From source file:com.example.nitish.welcomapp.widgetpt.PeriodicTableView.java

/**
 * Draw the title on the supplied Canvas.
 *
 * @param canvas The Canvas/*from   w  ww  .ja  v  a2 s  .  c o  m*/
 */
private void writeTitle(@NonNull Canvas canvas) {
    canvas.drawText(mTitle, 0, mTitle.length(),
            mBlockSize * mNumCols / 2 + mContentRect.left + mContentOffset.x,
            mBlockSize + mContentRect.top + mContentOffset.y, mTitlePaint);
}

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From source file:com.example.psumaps.MapView.java

private void drawMarker(LatLng point, String str) {
    // Creating an instance of MarkerOptions
    MarkerOptions markerOptions = new MarkerOptions();

    //IconGenerator tc = new IconGenerator(this);
    //Bitmap bmp = tc.makeIcon("hello");

    Bitmap bitmap = BitmapFactory.decodeResource(this.getResources(), R.drawable.bubble_white);// get the image same as your EditText

    int h = bitmap.getHeight() * 2;
    int w = bitmap.getWidth() * 2;

    bitmap = convertToMutable(bitmap);// converting the bitmap to mutable
    Bitmap incrsize = Bitmap.createScaledBitmap(bitmap, w, h, false);

    Canvas cs = new Canvas(incrsize);
    Paint pt = new Paint();
    pt.setColor(Color.BLACK);/*from  w w w  .j a va  2 s .c om*/
    //Typeface tf = Typeface.create("Helvetica",Typeface.BOLD);
    pt.setTypeface(Typeface.defaultFromStyle(Typeface.BOLD));

    String iam = str.toUpperCase(Locale.getDefault());

    pt.setTextSize(25);
    cs.drawText(iam, 0, iam.length(), (h / 2) + 10, (w / 2) / 2, pt);
    //pt.setColor(Color.RED);
    //cs.drawText("this is praki", 0, 13, h / 2, w / 3, pt);

    // Setting latitude and longitude for the marker
    markerOptions.position(point).title(str).icon(BitmapDescriptorFactory.fromBitmap(incrsize));

    // Adding marker on the Google Map
    map.addMarker(markerOptions);
}

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From source file:com.mukesh.OtpView.java

private void drawTextAtBox(Canvas canvas, Paint paint, CharSequence text, int charAt) {
    paint.getTextBounds(text.toString(), charAt, charAt + 1, textRect);
    float cx = itemCenterPoint.x;
    float cy = itemCenterPoint.y;
    float x = cx - Math.abs((float) textRect.width()) / 2 - textRect.left;
    float y = cy + Math.abs((float) textRect.height()) / 2 - textRect.bottom;
    canvas.drawText(text, charAt, charAt + 1, x, y, paint);
}

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From source file:com.alimuzaffar.lib.widgets.PinEntryEditText.java

@Override
protected void onDraw(Canvas canvas) {
    //super.onDraw(canvas);
    CharSequence text = getFullText();
    int textLength = text.length();
    float[] textWidths = new float[textLength];
    getPaint().getTextWidths(text, 0, textLength, textWidths);

    for (int i = 0; i < mNumChars; i++) {
        //If a background for the pin characters is specified, it should be behind the characters.
        if (mPinBackground != null) {
            updateDrawableState(i < textLength, i == textLength);
            mPinBackground.setBounds((int) mLineCoords[i].left, (int) mLineCoords[i].top,
                    (int) mLineCoords[i].right, (int) mLineCoords[i].bottom);
            mPinBackground.draw(canvas);
        }/*w  w w . java 2 s  .  c  o  m*/
        if (textLength > i) {
            float middle = mLineCoords[i].left + mCharSize / 2;
            if (!mAnimate || i != textLength - 1) {
                canvas.drawText(text, i, i + 1, middle - textWidths[i] / 2, mCharBottom[i], mCharPaint);
            } else {
                canvas.drawText(text, i, i + 1, middle - textWidths[i] / 2, mCharBottom[i], mLastCharPaint);
            }
        }
        //The lines should be in front of the text (because that's how I want it).
        if (mPinBackground == null) {
            updateColorForLines(i <= textLength);
            canvas.drawLine(mLineCoords[i].left, mLineCoords[i].top, mLineCoords[i].right,
                    mLineCoords[i].bottom, mLinesPaint);
        }
    }
}

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From source file:org.mariotaku.twidere.text.OriginalStatusSpan.java

@Override
public void draw(final Canvas canvas, final CharSequence text, final int start, final int end, final float x,
        final int top, final int y, final int bottom, final Paint paint) {
    if (!(paint instanceof TextPaint))
        return;/*  w  w  w .  j av  a2 s  . c  om*/
    final TextPaint tp = (TextPaint) paint;
    mBounds.left = x;
    mBounds.right = x + paint.measureText(text, start, end) + mPadding * 2;
    mBounds.top = top;
    mBounds.bottom = bottom;
    final int innerTextColor = TwidereColorUtils.getContrastYIQ(tp.linkColor, ThemeUtils.ACCENT_COLOR_THRESHOLD,
            mDarkLightColors[0], mDarkLightColors[1]);
    mPaint.setStyle(Paint.Style.FILL);
    mPaint.setColor(tp.linkColor);
    mBounds.inset(mPaint.getStrokeWidth() / 2, mPaint.getStrokeWidth() / 2);
    canvas.drawRoundRect(mBounds, mCornerRadius, mCornerRadius, mPaint);
    mBounds.inset(-mPaint.getStrokeWidth() / 2, -mPaint.getStrokeWidth() / 2);
    mPaint.setStyle(Paint.Style.STROKE);
    mPaint.setColor(
            ColorUtils.compositeColors(ColorUtils.setAlphaComponent(innerTextColor, 0x80), tp.linkColor));
    mBounds.inset(mPaint.getStrokeWidth() / 2, mPaint.getStrokeWidth() / 2);
    canvas.drawRoundRect(mBounds, mCornerRadius, mCornerRadius, mPaint);
    paint.setColor(innerTextColor);
    canvas.drawText(text, start, end, x + mPadding,
            top + (bottom - top) / 2 - (paint.descent() + paint.ascent()) / 2, paint);
}

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From source file:com.lamcreations.scaffold.common.utils.CollapsingTextHelper.java

public void draw(Canvas canvas) {
    int saveCount = canvas.save();
    if (this.mTextToDraw != null) {
        boolean isRtl = this.mIsRtl;
        float x = isRtl ? this.mCurrentRight : this.mCurrentLeft;
        float y = this.mCurrentTop;
        boolean drawTexture = this.mUseTexture && this.mExpandedTitleTexture != null;
        this.mTextPaint.setTextSize(this.mCurrentTextSize);
        float ascent;
        if (drawTexture) {
            ascent = this.mTextureAscent * this.mScale;
        } else {/*w w w  .j  av a2 s . c o m*/
            ascent = this.mTextPaint.ascent() * this.mScale;
        }

        if (drawTexture) {
            y += ascent;
        }

        if (this.mScale != 1.0F) {
            canvas.scale(this.mScale, this.mScale, x, y);
        }

        if (isRtl) {
            x -= this.mTextWidth;
        }

        if (drawTexture) {
            canvas.drawBitmap(this.mExpandedTitleTexture, x, y, this.mTexturePaint);
        } else {
            canvas.drawText(this.mTextToDraw, 0, this.mTextToDraw.length(), x, y, this.mTextPaint);
        }
    }

    canvas.restoreToCount(saveCount);
}

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