Example usage for android.graphics Canvas drawText

List of usage examples for android.graphics Canvas drawText

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Introduction

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

Prototype

public void drawText(@NonNull String text, float x, float y, @NonNull Paint paint)

Source Link

Document

Draw the text, with origin at (x,y), using the specified paint.

Usage

From source file:org.jraf.android.piclabel.app.form.FormActivity.java

private void drawText(Canvas canvas) {
    Paint paint = new Paint();
    paint.setStyle(Paint.Style.FILL);
    paint.setAntiAlias(true);/*from ww  w  .j  a v a 2s. co m*/
    paint.setTypeface(Typeface.createFromAsset(getAssets(), "fonts/" + getSelectedFontName()));

    int textSize = canvas.getHeight() / 35;
    paint.setTextSize(textSize);
    int margin = textSize / 5;

    // Measure date/time
    String dateTime = mEdtDateTime.getText().toString();
    Rect boundsDateTime = new Rect();
    paint.getTextBounds(dateTime, 0, dateTime.length(), boundsDateTime);

    // Measure location
    String location = mEdtLocation.getText().toString();
    Rect boundsLocation = new Rect();
    paint.getTextBounds(location, 0, location.length(), boundsLocation);

    int totalWidth = boundsDateTime.width() + textSize * 2 + boundsLocation.width();
    if (totalWidth > canvas.getWidth()) {
        // Draw on 2 lines

        // Draw a rectangle
        paint.setColor(Color.argb(180, 0, 0, 0));
        canvas.drawRect(0, 0, canvas.getWidth(), -boundsDateTime.top + boundsDateTime.bottom
                + -boundsLocation.top + boundsLocation.bottom + margin * 3, paint);

        // Draw date/time
        paint.setColor(Color.WHITE);
        canvas.drawText(dateTime, margin, margin + -boundsDateTime.top, paint);

        // Draw location
        canvas.drawText(location, canvas.getWidth() - boundsLocation.right - boundsLocation.left - margin,
                margin + -boundsDateTime.top + boundsDateTime.bottom + margin + -boundsLocation.top, paint);

    } else {
        // Draw on 1 line

        // Draw a rectangle
        paint.setColor(Color.argb(180, 0, 0, 0));
        canvas.drawRect(0, 0, canvas.getWidth(),
                margin + Math.max(boundsDateTime.height(), boundsLocation.height()) + margin, paint);

        // Draw date/time
        paint.setColor(Color.WHITE);
        canvas.drawText(dateTime, margin, margin + -boundsDateTime.top, paint);

        // Draw location
        canvas.drawText(location, canvas.getWidth() - boundsLocation.right - boundsLocation.left - margin,
                margin + -boundsLocation.top, paint);
    }
}

From source file:com.android.launcher3.Utilities.java

public static Bitmap getNotificationBadgeIcon(Context context, Bitmap appIcon, int number) {
    Paint paint;//from  w w w.  j  av  a  2  s  .c o m
    Paint circlePaint;
    String text = "" + String.valueOf(number);
    Bitmap canvasBitmap = Bitmap.createBitmap(appIcon.getWidth(), appIcon.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(canvasBitmap);
    paint = new Paint();
    circlePaint = new Paint();

    paint.setColor(Color.WHITE);
    paint.setTextSize(45);
    paint.setAntiAlias(true);
    paint.setTextAlign(Paint.Align.CENTER);

    Rect bounds = new Rect();
    paint.getTextBounds(text, 0, text.length(), bounds);

    circlePaint.setColor(ContextCompat.getColor(context, R.color.colorPrimary));
    circlePaint.setAntiAlias(true);

    canvas.drawCircle(appIcon.getWidth() / 4, appIcon.getHeight() / 4, 45, circlePaint);
    canvas.drawText(text, appIcon.getWidth() / 4, appIcon.getHeight() / 3, paint);

    return overlay(appIcon, canvasBitmap);
}

From source file:com.andexert.calendarlistview.library.SimpleMonthView.java

private void drawMonthDayLabels(Canvas canvas) {
    int y = MONTH_HEADER_SIZE - (MONTH_DAY_LABEL_TEXT_SIZE / 2);
    int dayWidthHalf = (mWidth - mPadding * 2) / (mNumDays * 2);

    for (int i = 0; i < mNumDays; i++) {
        int calendarDay = (i + mWeekStart) % mNumDays;
        int x = (2 * i + 1) * dayWidthHalf + mPadding;
        mDayLabelCalendar.set(Calendar.DAY_OF_WEEK, calendarDay);
        String numberDay = mDateFormatSymbols.getShortWeekdays()[mDayLabelCalendar.get(Calendar.DAY_OF_WEEK)]
                .toUpperCase(Locale.getDefault());
        if (numberDay.equals("")) {
            numberDay = "";
        } else if (numberDay.equals("")) {
            numberDay = "";
        } else if (numberDay.equals("")) {
            numberDay = "";
        } else if (numberDay.equals("")) {
            numberDay = "";
        } else if (numberDay.equals("")) {
            numberDay = "";
        } else if (numberDay.equals("")) {
            numberDay = "";
        } else if (numberDay.equals("")) {
            numberDay = "";
        }/*  ww  w  . j a  v  a  2 s .  c  om*/
        canvas.drawText(numberDay, x, y, mMonthDayLabelPaint);
    }
}

From source file:connect.app.com.connect.calendar.SimpleMonthView.java

private void drawDaysOfWeek(Canvas canvas) {
    final TextPaint p = mDayOfWeekPaint;
    final int headerHeight = mMonthHeight;
    final int rowHeight = mDayOfWeekHeight;
    final int colWidth = mCellWidth;

    // Text is vertically centered within the day of week height.
    final float halfLineHeight = (p.ascent() + p.descent()) / 2f;
    final int rowCenter = headerHeight + rowHeight / 2;

    for (int col = 0; col < DAYS_IN_WEEK; col++) {
        final int colCenter = colWidth * col + colWidth / 2;
        final int colCenterRtl = colCenter;
        //            if (isLayoutRtl()) {
        //                colCenterRtl = mPaddedWidth - colCenter;
        //            } else {
        //                colCenterRtl = colCenter;
        //            }

        final int dayOfWeek = (col + mWeekStart) % DAYS_IN_WEEK;
        final String label = getDayOfWeekLabel(dayOfWeek);
        canvas.drawText(label, colCenterRtl, rowCenter - halfLineHeight, p);
    }//from ww  w  .  jav a  2  s . c o m
}

From source file:au.com.zacher.popularmovies.activity.layout.CollapsingTitleLayout.java

@Override
public void draw(@NonNull Canvas canvas) {
    final int saveCount = canvas.save();

    final int toolbarHeight = this.mToolbar.getHeight();
    canvas.clipRect(0, 0, canvas.getWidth(),
            interpolate(canvas.getHeight(), toolbarHeight, this.mScrollOffset));

    // Now call super and let it draw the background, etc
    super.draw(canvas);

    if (this.mTitleToDraw != null) {
        float x = this.mTextLeft;
        float y = this.mTextTop;

        final float ascent = this.mTextPaint.ascent() * this.mScale;
        final float descent = this.mTextPaint.descent() * this.mScale;
        final float h = descent - ascent;

        if (DEBUG_DRAW) {
            // Just a debug tool, which drawn a Magneta rect in the text bounds
            canvas.drawRect(this.mTextLeft, y - h + descent, this.mTextRight, y + descent, DEBUG_DRAW_PAINT);
        }/*ww w  .  j  av a 2  s .  c  om*/

        if (this.mUseTexture) {
            y = y - h + descent;
        }

        if (this.mScale != 1f) {
            canvas.scale(this.mScale, this.mScale, x, y);
        }

        if (this.mUseTexture && this.mExpandedTitleTexture != null) {
            // If we should use a texture, draw it instead of text
            canvas.drawBitmap(this.mExpandedTitleTexture, x, y, this.mTexturePaint);
        } else {
            canvas.drawText(this.mTitleToDraw, x, y, this.mTextPaint);
        }
    }

    canvas.restoreToCount(saveCount);
}

From source file:org.appspot.apprtc.util.ThumbnailsCacheManager.java

public static void LoadImage(final String url, LoadImageCallback callback, final Resources resources,
        final String displayname, final boolean rounded, boolean fromCache) {
    final LoadImageCallback mCallback = callback;
    final Handler uiHandler = new Handler();
    final int FG_COLOR = 0xFFFAFAFA;
    final String name = displayname;

    if (fromCache) {
        Bitmap bitmap = ThumbnailsCacheManager.getBitmapFromDiskCache(url);

        if (bitmap != null) {
            if (rounded) {
                RoundedBitmapDrawable roundedBitmap = RoundedBitmapDrawableFactory.create(resources, bitmap);
                roundedBitmap.setCircular(true);
                mCallback.onImageLoaded(roundedBitmap.getBitmap());
            } else {
                mCallback.onImageLoaded(bitmap);
            }/*from w w  w . j  av  a  2 s. c o  m*/
            return;
        }
    }

    AsyncHttpURLConnection httpConnection = new AsyncHttpURLConnection("GET", url, "",
            new AsyncHttpURLConnection.AsyncHttpEvents() {
                @Override
                public void onHttpError(String errorMessage) {
                    Log.d("LoadImage", errorMessage);
                }

                @Override
                public void onHttpComplete(String response) {
                    int size = 256;
                    Bitmap bitmap = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
                    Canvas canvas = new Canvas(bitmap);
                    final String trimmedName = name == null ? "" : name.trim();
                    drawTile(canvas, trimmedName, 0, 0, size, size);
                    ThumbnailsCacheManager.addBitmapToCache(url, bitmap);
                    onHttpComplete(bitmap);
                }

                @Override
                public void onHttpComplete(final Bitmap response) {
                    if (mCallback != null) {
                        uiHandler.post(new Runnable() {
                            @Override
                            public void run() {
                                if (rounded) {
                                    RoundedBitmapDrawable roundedBitmap = RoundedBitmapDrawableFactory
                                            .create(resources, response);
                                    roundedBitmap.setCircular(true);
                                    mCallback.onImageLoaded(roundedBitmap.getBitmap());
                                } else {
                                    mCallback.onImageLoaded(response);
                                }

                            }

                        });

                    }
                }

                private boolean drawTile(Canvas canvas, String letter, int tileColor, int left, int top,
                        int right, int bottom) {
                    letter = letter.toUpperCase(Locale.getDefault());
                    Paint tilePaint = new Paint(), textPaint = new Paint();
                    tilePaint.setColor(tileColor);
                    textPaint.setFlags(Paint.ANTI_ALIAS_FLAG);
                    textPaint.setColor(FG_COLOR);
                    textPaint.setTypeface(Typeface.create("sans-serif-light", Typeface.NORMAL));
                    textPaint.setTextSize((float) ((right - left) * 0.8));
                    Rect rect = new Rect();

                    canvas.drawRect(new Rect(left, top, right, bottom), tilePaint);
                    textPaint.getTextBounds(letter, 0, 1, rect);
                    float width = textPaint.measureText(letter);
                    canvas.drawText(letter, (right + left) / 2 - width / 2,
                            (top + bottom) / 2 + rect.height() / 2, textPaint);
                    return true;
                }

                private boolean drawTile(Canvas canvas, String name, int left, int top, int right, int bottom) {
                    if (name != null) {
                        final String letter = getFirstLetter(name);
                        final int color = ThumbnailsCacheManager.getColorForName(name);
                        drawTile(canvas, letter, color, left, top, right, bottom);
                        return true;
                    }
                    return false;
                }

            });
    httpConnection.setBitmap();
    httpConnection.send();
}

From source file:de.uni_weimar.mheinz.androidtouchscope.display.HandleView.java

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    if (mIsOn) {/*  www.j  a  v  a 2s.c  o  m*/
        mShapeDrawable.getPaint().setStyle(Paint.Style.FILL_AND_STROKE);
        mShapeDrawable.getPaint().setColor(mColor);
        mShapeDrawable.getPaint().setShadowLayer(2, 2, 2, Color.GRAY);
        mShapeDrawable.draw(canvas);
    } else {
        /*mShapeDrawable.getPaint().setStyle(Paint.Style.FILL);
        mShapeDrawable.getPaint().setColor(Color.WHITE);
        mShapeDrawable.getPaint().setShadowLayer(2,2,2,Color.GRAY);
        mShapeDrawable.draw(canvas);
        mShapeDrawable.getPaint().setStyle(Paint.Style.STROKE);
        mShapeDrawable.getPaint().setColor(Color.BLACK);
        mShapeDrawable.draw(canvas);*/
        mShapeDrawable.getPaint().setStyle(Paint.Style.FILL_AND_STROKE);
        mShapeDrawable.getPaint().setColor(Color.LTGRAY);
        mShapeDrawable.getPaint().setShadowLayer(2, 2, 2, Color.GRAY);
        mShapeDrawable.draw(canvas);
    }

    PointF center = getCircleCenter();
    mMainTextPaint.getTextBounds(mMainText, 0, mMainText.length(), mTextBounds);
    if (mOrientation == HandleDirection.RIGHT)
        canvas.drawText(mMainText, center.x + 5, center.y + mTextBounds.height() / 2 - 1, mMainTextPaint);
    else if (mOrientation == HandleDirection.LEFT)
        canvas.drawText(mMainText, center.x - 5, center.y + mTextBounds.height() / 2 - 2, mMainTextPaint);
    else
        canvas.drawText(mMainText, center.x, center.y + mTextBounds.height() / 2, mMainTextPaint);

    if (mPressDrawable != null) {
        if (mOrientation == HandleDirection.RIGHT) {
            mPressDrawable.setBounds(2, (int) (center.y - HANDLE_BREADTH / 2), HANDLE_BREADTH - 3,
                    (int) center.y + HANDLE_BREADTH / 2);
            mPressDrawable.draw(canvas);
        } else if (mOrientation == HandleDirection.LEFT) {
            canvas.save();
            canvas.rotate(180, HANDLE_LENGTH / 2, mHandlePos);
            mPressDrawable.setBounds(1, (int) (center.y - HANDLE_BREADTH / 2), HANDLE_BREADTH - 5,
                    (int) center.y + HANDLE_BREADTH / 2);
            mPressDrawable.draw(canvas);
            canvas.restore();
        }
    }
}

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

@Override
protected void onDraw(Canvas canvas) {
    canvas.drawRect(0, 0, getRight(), getBottom(), mBgPaint);
    mRect.top = (int) (mBlockSize * 1.3) + mContentRect.top + mContentOffset.y;
    mRect.left = mBlockSize * 4 + mContentRect.left + mContentOffset.x;
    mRect.bottom = mRect.top + mBlockSize * 2;
    mRect.right = mRect.left + mBlockSize * 8;
    mLegend.drawLegend(canvas, mRect);/*  w  ww .  j  av  a2  s  . c  o  m*/

    writeHeaders(canvas);
    writeTitle(canvas);

    for (PeriodicTableBlock block : mPeriodicTableBlocks) {
        findBlockPosition(block);

        if (!isBlockVisible(mRect)) {
            continue;
        }

        mBlockPaint.setColor(block.color);

        canvas.drawRect(mRect, mBlockPaint);

        canvas.drawText(block.element.symbol, mRect.left + mBlockSize / 2,
                mRect.bottom - (int) (mBlockSize / 2.8), mSymbolPaint);

        canvas.drawText(String.valueOf(block.element.number), mRect.left + mBlockSize / 20,
                mRect.top + mNumberPaint.getTextSize(), mNumberPaint);

        canvas.drawText(block.subtext, mRect.left + mBlockSize / 2, mRect.bottom - mBlockSize / 20,
                mSmallTextPaint);
    }

    if (mBlockSelected != null) {
        mSelectedPaint.setStrokeWidth(mBlockSize / 10);
        findBlockPosition(mBlockSelected);
        canvas.drawRect(mRect, mSelectedPaint);
    }

    drawEdgeEffects(canvas);
}

From source file:org.appspot.apprtc.util.ThumbnailsCacheManager.java

public static void LoadMenuImage(final String url, MenuItem menuItem, String displayname, final boolean rounded,
        Resources resources, boolean fromCache) {
    final Resources mResources = resources;
    final WeakReference<MenuItem> menuItemImage = new WeakReference<MenuItem>(menuItem);
    final Handler uiHandler = new Handler();
    final int FG_COLOR = 0xFFFAFAFA;
    final String name = displayname;

    if (fromCache) {
        Bitmap bitmap = ThumbnailsCacheManager.getBitmapFromDiskCache(url);

        if (bitmap != null) {
            if (rounded) {
                RoundedBitmapDrawable roundedBitmap = RoundedBitmapDrawableFactory.create(mResources, bitmap);
                roundedBitmap.setCircular(true);
                menuItemImage.get().setIcon(roundedBitmap);
            } else {
                menuItemImage.get().setIcon(new BitmapDrawable(bitmap));
            }//w w  w.  ja  v  a 2  s.c  o m
            return;
        }
    }

    AsyncHttpURLConnection httpConnection = new AsyncHttpURLConnection("GET", url, "",
            new AsyncHttpURLConnection.AsyncHttpEvents() {
                @Override
                public void onHttpError(String errorMessage) {
                    Log.d("LoadImage", errorMessage);
                }

                @Override
                public void onHttpComplete(String response) {
                    int size = 96;
                    Bitmap bitmap = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
                    Canvas canvas = new Canvas(bitmap);
                    final String trimmedName = name == null ? "" : name.trim();
                    drawTile(canvas, trimmedName, 0, 0, size, size);
                    ThumbnailsCacheManager.addBitmapToCache(url, bitmap);
                    onHttpComplete(bitmap);
                }

                @Override
                public void onHttpComplete(final Bitmap response) {
                    if (menuItemImage != null && menuItemImage.get() != null) {
                        uiHandler.post(new Runnable() {
                            @Override
                            public void run() {
                                if (rounded) {
                                    RoundedBitmapDrawable roundedBitmap = RoundedBitmapDrawableFactory
                                            .create(mResources, response);
                                    roundedBitmap.setCircular(true);
                                    menuItemImage.get().setIcon(roundedBitmap);
                                } else {
                                    menuItemImage.get().setIcon(new BitmapDrawable(response));
                                }
                            }

                        });

                    }
                }

                private boolean drawTile(Canvas canvas, String letter, int tileColor, int left, int top,
                        int right, int bottom) {
                    letter = letter.toUpperCase(Locale.getDefault());
                    Paint tilePaint = new Paint(), textPaint = new Paint();
                    tilePaint.setColor(tileColor);
                    textPaint.setFlags(Paint.ANTI_ALIAS_FLAG);
                    textPaint.setColor(FG_COLOR);
                    textPaint.setTypeface(Typeface.create("sans-serif-light", Typeface.NORMAL));
                    textPaint.setTextSize((float) ((right - left) * 0.8));
                    Rect rect = new Rect();

                    canvas.drawRect(new Rect(left, top, right, bottom), tilePaint);
                    textPaint.getTextBounds(letter, 0, 1, rect);
                    float width = textPaint.measureText(letter);
                    canvas.drawText(letter, (right + left) / 2 - width / 2,
                            (top + bottom) / 2 + rect.height() / 2, textPaint);
                    return true;
                }

                private boolean drawTile(Canvas canvas, String name, int left, int top, int right, int bottom) {
                    if (name != null) {
                        final String letter = getFirstLetter(name);
                        final int color = ThumbnailsCacheManager.getColorForName(name);
                        drawTile(canvas, letter, color, left, top, right, bottom);
                        return true;
                    }
                    return false;
                }

            });
    httpConnection.setBitmap();
    httpConnection.send();
}

From source file:de.vanita5.twittnuker.view.ColorPickerView.java

private void drawAlphaPanel(final Canvas canvas) {

    if (!mShowAlphaPanel || mAlphaRect == null || mAlphaPattern == null)
        return;//from w w w  .ja  v a2 s. com

    final RectF rect = mAlphaRect;

    if (BORDER_WIDTH_PX > 0) {
        mBorderPaint.setColor(mBorderColor);
        canvas.drawRect(rect.left - BORDER_WIDTH_PX, rect.top - BORDER_WIDTH_PX, rect.right + BORDER_WIDTH_PX,
                rect.bottom + BORDER_WIDTH_PX, mBorderPaint);
    }

    mAlphaPattern.draw(canvas);

    final float[] hsv = new float[] { mHue, mSat, mVal };
    final int color = Color.HSVToColor(hsv);
    final int acolor = Color.HSVToColor(0, hsv);

    mAlphaShader = new LinearGradient(rect.left, rect.top, rect.right, rect.top, color, acolor, TileMode.CLAMP);

    mAlphaPaint.setShader(mAlphaShader);

    canvas.drawRect(rect, mAlphaPaint);

    if (mAlphaSliderText != null && mAlphaSliderText != "") {
        canvas.drawText(mAlphaSliderText, rect.centerX(), rect.centerY() + 4 * mDensity, mAlphaTextPaint);
    }

    final float rectWidth = 4 * mDensity / 2;

    final Point p = alphaToPoint(mAlpha);

    final RectF r = new RectF();
    r.left = p.x - rectWidth;
    r.right = p.x + rectWidth;
    r.top = rect.top - RECTANGLE_TRACKER_OFFSET;
    r.bottom = rect.bottom + RECTANGLE_TRACKER_OFFSET;

    canvas.drawRoundRect(r, 2, 2, mHueTrackerPaint);

}