Java Code Examples for android.text.StaticLayout#getLineForVertical()

The following examples show how to use android.text.StaticLayout#getLineForVertical() . 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: FontFitTextView.java    From Twire with GNU General Public License v3.0 4 votes vote down vote up 
/**
 * Resize the text size with specified width and height
 *
 * @param width
 * @param height
 */
public void resizeText(int width, int height) {
    CharSequence text = getText();
    // Do not resize if the view does not have dimensions or there is no text
    if (text == null || text.length() == 0 || height <= 0 || width <= 0 || mTextSize == 0) {
        return;
    }

    if (getTransformationMethod() != null) {
        text = getTransformationMethod().getTransformation(text, this);
    }

    // Get the text view's paint object
    TextPaint textPaint = getPaint();

    // Store the current text size
    float oldTextSize = textPaint.getTextSize();
    // If there is a max text size set, use the lesser of that and the default text size
    float targetTextSize = mMaxTextSize > 0 ? Math.min(mTextSize, mMaxTextSize) : mTextSize;

    // Get the required text height
    int textHeight = getTextHeight(text, textPaint, width, targetTextSize);

    // Until we either fit within our text view or we had reached our min text size, incrementally try smaller sizes
    while (textHeight > height && targetTextSize > mMinTextSize) {
        targetTextSize = Math.max(targetTextSize - 2, mMinTextSize);
        textHeight = getTextHeight(text, textPaint, width, targetTextSize);
    }

    // If we had reached our minimum text size and still don't fit, append an ellipsis
    if (mAddEllipsis && targetTextSize == mMinTextSize && textHeight > height) {
        // Draw using a static layout
        // modified: use a copy of TextPaint for measuring
        TextPaint paint = new TextPaint(textPaint);
        // Draw using a static layout
        StaticLayout layout = new StaticLayout(text, paint, width, Layout.Alignment.ALIGN_NORMAL, mSpacingMult, mSpacingAdd, false);
        // Check that we have a least one line of rendered text
        if (layout.getLineCount() > 0) {
            // Since the line at the specific vertical position would be cut off,
            // we must trim up to the previous line
            int lastLine = layout.getLineForVertical(height) - 1;
            // If the text would not even fit on a single line, clear it
            if (lastLine < 0) {
                setText("");
            }
            // Otherwise, trim to the previous line and add an ellipsis
            else {
                int start = layout.getLineStart(lastLine);
                int end = layout.getLineEnd(lastLine);
                float lineWidth = layout.getLineWidth(lastLine);
                float ellipseWidth = textPaint.measureText(mEllipsis);

                // Trim characters off until we have enough room to draw the ellipsis
                while (width < lineWidth + ellipseWidth) {
                    lineWidth = textPaint.measureText(text.subSequence(start, --end + 1).toString());
                }
                setText(text.subSequence(0, end) + mEllipsis);
            }
        }
    }

    // Some devices try to auto adjust line spacing, so force default line spacing
    // and invalidate the layout as a side effect
    setTextSize(TypedValue.COMPLEX_UNIT_PX, targetTextSize);
    setLineSpacing(mSpacingAdd, mSpacingMult);

    // Notify the listener if registered
    if (mTextResizeListener != null) {
        mTextResizeListener.onTextResize(this, oldTextSize, targetTextSize);
    }

    // Reset force resize flag
    mNeedsResize = false;
}
Example 2
Source File: FontFitTextView.java    From Pocket-Plays-for-Twitch with GNU General Public License v3.0 4 votes vote down vote up 
/**
 * Resize the text size with specified width and height
 * @param width
 * @param height
 */
public void resizeText(int width, int height) {
	CharSequence text = getText();
	// Do not resize if the view does not have dimensions or there is no text
	if (text == null || text.length() == 0 || height <= 0 || width <= 0 || mTextSize == 0) {
		return;
	}

	if (getTransformationMethod() != null) {
		text = getTransformationMethod().getTransformation(text, this);
	}

	// Get the text view's paint object
	TextPaint textPaint = getPaint();

	// Store the current text size
	float oldTextSize = textPaint.getTextSize();
	// If there is a max text size set, use the lesser of that and the default text size
	float targetTextSize = mMaxTextSize > 0 ? Math.min(mTextSize, mMaxTextSize) : mTextSize;

	// Get the required text height
	int textHeight = getTextHeight(text, textPaint, width, targetTextSize);

	// Until we either fit within our text view or we had reached our min text size, incrementally try smaller sizes
	while (textHeight > height && targetTextSize > mMinTextSize) {
		targetTextSize = Math.max(targetTextSize - 2, mMinTextSize);
		textHeight = getTextHeight(text, textPaint, width, targetTextSize);
	}

	// If we had reached our minimum text size and still don't fit, append an ellipsis
	if (mAddEllipsis && targetTextSize == mMinTextSize && textHeight > height) {
		// Draw using a static layout
		// modified: use a copy of TextPaint for measuring
		TextPaint paint = new TextPaint(textPaint);
		// Draw using a static layout
		StaticLayout layout = new StaticLayout(text, paint, width, Layout.Alignment.ALIGN_NORMAL, mSpacingMult, mSpacingAdd, false);
		// Check that we have a least one line of rendered text
		if (layout.getLineCount() > 0) {
			// Since the line at the specific vertical position would be cut off,
			// we must trim up to the previous line
			int lastLine = layout.getLineForVertical(height) - 1;
			// If the text would not even fit on a single line, clear it
			if (lastLine < 0) {
				setText("");
			}
			// Otherwise, trim to the previous line and add an ellipsis
			else {
				int start = layout.getLineStart(lastLine);
				int end = layout.getLineEnd(lastLine);
				float lineWidth = layout.getLineWidth(lastLine);
				float ellipseWidth = textPaint.measureText(mEllipsis);

				// Trim characters off until we have enough room to draw the ellipsis
				while (width < lineWidth + ellipseWidth) {
					lineWidth = textPaint.measureText(text.subSequence(start, --end + 1).toString());
				}
				setText(text.subSequence(0, end) + mEllipsis);
			}
		}
	}

	// Some devices try to auto adjust line spacing, so force default line spacing
	// and invalidate the layout as a side effect
	setTextSize(TypedValue.COMPLEX_UNIT_PX, targetTextSize);
	setLineSpacing(mSpacingAdd, mSpacingMult);

	// Notify the listener if registered
	if (mTextResizeListener != null) {
		mTextResizeListener.onTextResize(this, oldTextSize, targetTextSize);
	}

	// Reset force resize flag
	mNeedsResize = false;
}
Example 3
Source File: AutoResizeTextView.java    From memoir with Apache License 2.0 4 votes vote down vote up 
/**
 * Resizes this view's text size with respect to its width and height
 * (minus padding).
 */
private void resizeText() {
    final int availableHeightPixels = getHeight() - getCompoundPaddingBottom() - getCompoundPaddingTop();

    final int availableWidthPixels = getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight();

    final CharSequence text = getText();

    // Safety check
    // (Do not resize if the view does not have dimensions or if there is no text)
    if (text == null
            || text.length() <= 0
            || availableHeightPixels <= 0
            || availableWidthPixels <= 0
            || mMaxTextSizePixels <= 0) {
        return;
    }

    float targetTextSizePixels = mMaxTextSizePixels;
    int targetTextHeightPixels = getTextHeightPixels(text, availableWidthPixels, targetTextSizePixels);

    // Until we either fit within our TextView
    // or we have reached our minimum text size,
    // incrementally try smaller sizes
    while (targetTextHeightPixels > availableHeightPixels
            && targetTextSizePixels > mMinTextSizePixels) {
        targetTextSizePixels = Math.max(
                targetTextSizePixels - 2,
                mMinTextSizePixels);

        targetTextHeightPixels = getTextHeightPixels(
                text,
                availableWidthPixels,
                targetTextSizePixels);
    }

    // If we have reached our minimum text size and the text still doesn't fit,
    // append an ellipsis
    // (NOTE: Auto-ellipsize doesn't work hence why we have to do it here)
    // depending on the value of getEllipsize())
    if (getEllipsize() != null
            && targetTextSizePixels == mMinTextSizePixels
            && targetTextHeightPixels > availableHeightPixels) {
        // Make a copy of the original TextPaint object for measuring
        TextPaint textPaintCopy = new TextPaint(getPaint());
        textPaintCopy.setTextSize(targetTextSizePixels);

        // Measure using a StaticLayout instance
        StaticLayout staticLayout = new StaticLayout(
                text,
                textPaintCopy,
                availableWidthPixels,
                Layout.Alignment.ALIGN_NORMAL,
                mLineSpacingMultiplier,
                mLineSpacingExtra,
                false);

        // Check that we have a least one line of rendered text
        if (staticLayout.getLineCount() > 0) {
            // Since the line at the specific vertical position would be cut off,
            // we must trim up to the previous line and add an ellipsis
            int lastLine = staticLayout.getLineForVertical(availableHeightPixels) - 1;

            if (lastLine >= 0) {
                int startOffset = staticLayout.getLineStart(lastLine);
                int endOffset = staticLayout.getLineEnd(lastLine);
                float lineWidthPixels = staticLayout.getLineWidth(lastLine);
                float ellipseWidth = textPaintCopy.measureText(mEllipsis);

                // Trim characters off until we have enough room to draw the ellipsis
                while (availableWidthPixels < lineWidthPixels + ellipseWidth) {
                    endOffset--;
                    lineWidthPixels = textPaintCopy.measureText(
                            text.subSequence(startOffset, endOffset + 1).toString());
                }

                setText(text.subSequence(0, endOffset) + mEllipsis);
            }
        }
    }

    super.setTextSize(TypedValue.COMPLEX_UNIT_PX, targetTextSizePixels);
    // Some devices try to auto adjust line spacing, so force default line spacing
    super.setLineSpacing(mLineSpacingExtra, mLineSpacingMultiplier);
}
Example 4
Source File: AutoResizingTextView.java    From Simple-Solitaire with GNU General Public License v3.0 4 votes vote down vote up 
/**
 * Resize the text size with specified width and height
 *
 * @param width
 * @param height
 */
public void resizeText(int width, int height) {
    CharSequence text = getText();
    // Do not resize if the view does not have dimensions or there is no text
    if (text == null || text.length() == 0 || height <= 0 || width <= 0 || mTextSize == 0) {
        return;
    }

    if (getTransformationMethod() != null) {
        text = getTransformationMethod().getTransformation(text, this);
    }

    // Get the text view's paint object
    TextPaint textPaint = getPaint();

    // Store the current text size
    float oldTextSize = textPaint.getTextSize();
    // If there is a max text size set, use the lesser of that and the default text size
    float targetTextSize = mMaxTextSize > 0 ? Math.min(mTextSize, mMaxTextSize) : mTextSize;

    // Get the required text height
    int textHeight = getTextHeight(text, textPaint, width, targetTextSize);

    // Until we either fit within our text view or we had reached our min text size, incrementally try smaller sizes
    while (textHeight > height && targetTextSize > mMinTextSize) {
        targetTextSize = Math.max(targetTextSize - 2, mMinTextSize);
        textHeight = getTextHeight(text, textPaint, width, targetTextSize);
    }

    // If we had reached our minimum text size and still don't fit, append an ellipsis
    if (mAddEllipsis && targetTextSize == mMinTextSize && textHeight > height) {
        // Draw using a static layout
        // modified: use a copy of TextPaint for measuring
        TextPaint paint = new TextPaint(textPaint);
        // Draw using a static layout
        StaticLayout layout = new StaticLayout(text, paint, width, Alignment.ALIGN_NORMAL, mSpacingMult, mSpacingAdd, false);
        // Check that we have a least one line of rendered text
        if (layout.getLineCount() > 0) {
            // Since the line at the specific vertical position would be cut off,
            // we must trim up to the previous line
            int lastLine = layout.getLineForVertical(height) - 1;
            // If the text would not even fit on a single line, clear it
            if (lastLine < 0) {
                setText("");
            }
            // Otherwise, trim to the previous line and add an ellipsis
            else {
                int start = layout.getLineStart(lastLine);
                int end = layout.getLineEnd(lastLine);
                float lineWidth = layout.getLineWidth(lastLine);
                float ellipseWidth = textPaint.measureText(mEllipsis);

                // Trim characters off until we have enough room to draw the ellipsis
                while (width < lineWidth + ellipseWidth) {
                    lineWidth = textPaint.measureText(text.subSequence(start, --end + 1).toString());
                }
                setText(text.subSequence(0, end) + mEllipsis);
            }
        }
    }

    // Some devices try to auto adjust line spacing, so force default line spacing
    // and invalidate the layout as a side effect
    setTextSize(TypedValue.COMPLEX_UNIT_PX, targetTextSize);
    setLineSpacing(mSpacingAdd, mSpacingMult);

    // Notify the listener if registered
    if (mTextResizeListener != null) {
        mTextResizeListener.onTextResize(this, oldTextSize, targetTextSize);
    }

    // Reset force resize flag
    mNeedsResize = false;
}
Example 5
Source File: AutoResizeTextView.java    From watchlist with Apache License 2.0 4 votes vote down vote up 
/**
 * Resizes this view's text size with respect to its width and height
 * (minus padding).
 */
private void resizeText() {
    final int availableHeightPixels = getHeight() - getCompoundPaddingBottom() - getCompoundPaddingTop();

    final int availableWidthPixels = getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight();

    final CharSequence text = getText();

    // Safety check
    // (Do not resize if the view does not have dimensions or if there is no text)
    if (text == null
            || text.length() <= 0
            || availableHeightPixels <= 0
            || availableWidthPixels <= 0
            || mMaxTextSizePixels <= 0) {
        return;
    }

    float targetTextSizePixels = mMaxTextSizePixels;
    int targetTextHeightPixels = getTextHeightPixels(text, availableWidthPixels, targetTextSizePixels);

    // Until we either fit within our TextView
    // or we have reached our minimum text size,
    // incrementally try smaller sizes
    while (targetTextHeightPixels > availableHeightPixels
            && targetTextSizePixels > mMinTextSizePixels) {
        targetTextSizePixels = Math.max(
                targetTextSizePixels - 2,
                mMinTextSizePixels);

        targetTextHeightPixels = getTextHeightPixels(
                text,
                availableWidthPixels,
                targetTextSizePixels);
    }

    // If we have reached our minimum text size and the text still doesn't fit,
    // append an ellipsis
    // (NOTE: Auto-ellipsize doesn't work hence why we have to do it here)
    // depending on the value of getEllipsize())
    if (getEllipsize() != null
            && targetTextSizePixels == mMinTextSizePixels
            && targetTextHeightPixels > availableHeightPixels) {
        // Make a copy of the original TextPaint object for measuring
        TextPaint textPaintCopy = new TextPaint(getPaint());
        textPaintCopy.setTextSize(targetTextSizePixels);

        // Measure using a StaticLayout instance
        StaticLayout staticLayout = new StaticLayout(
                text,
                textPaintCopy,
                availableWidthPixels,
                Layout.Alignment.ALIGN_NORMAL,
                mLineSpacingMultiplier,
                mLineSpacingExtra,
                false);

        // Check that we have a least one line of rendered text
        if (staticLayout.getLineCount() > 0) {
            // Since the line at the specific vertical position would be cut off,
            // we must trim up to the previous line and add an ellipsis
            int lastLine = staticLayout.getLineForVertical(availableHeightPixels) - 1;

            if (lastLine >= 0) {
                int startOffset = staticLayout.getLineStart(lastLine);
                int endOffset = staticLayout.getLineEnd(lastLine);
                float lineWidthPixels = staticLayout.getLineWidth(lastLine);
                float ellipseWidth = textPaintCopy.measureText(mEllipsis);

                // Trim characters off until we have enough room to draw the ellipsis
                while (availableWidthPixels < lineWidthPixels + ellipseWidth) {
                    endOffset--;
                    lineWidthPixels = textPaintCopy.measureText(
                            text.subSequence(startOffset, endOffset + 1).toString());
                }

                setText(text.subSequence(0, endOffset) + mEllipsis);
            }
        }
    }

    super.setTextSize(TypedValue.COMPLEX_UNIT_PX, targetTextSizePixels);
    // Some devices try to auto adjust line spacing, so force default line spacing
    super.setLineSpacing(mLineSpacingExtra, mLineSpacingMultiplier);
}
Example 6
Source File: AutoResizeTextView.java    From oneHookLibraryAndroid with Apache License 2.0 4 votes vote down vote up 
/**
 * Resize the text size with specified width and height
 * @param width
 * @param height
 */
public void resizeText(int width, int height) {
    CharSequence text = getText();
    // Do not resize if the view does not have dimensions or there is no text
    if (text == null || text.length() == 0 || height <= 0 || width <= 0 || mTextSize == 0) {
        return;
    }

    if (getTransformationMethod() != null) {
        text = getTransformationMethod().getTransformation(text, this);
    }

    // Get the text view's paint object
    TextPaint textPaint = getPaint();

    // Store the current text size
    float oldTextSize = textPaint.getTextSize();
    // If there is a max text size set, use the lesser of that and the default text size
    float targetTextSize = mMaxTextSize > 0 ? Math.min(mTextSize, mMaxTextSize) : mTextSize;

    // Get the required text height
    int textHeight = getTextHeight(text, textPaint, width, targetTextSize);

    // Until we either fit within our text view or we had reached our min text size, incrementally try smaller sizes
    while (textHeight > height && targetTextSize > mMinTextSize) {
        targetTextSize = Math.max(targetTextSize - 2, mMinTextSize);
        textHeight = getTextHeight(text, textPaint, width, targetTextSize);
    }

    // If we had reached our minimum text size and still don't fit, append an ellipsis
    if (mAddEllipsis && targetTextSize == mMinTextSize && textHeight > height) {
        // Draw using a static layout
        // modified: use a copy of TextPaint for measuring
        TextPaint paint = new TextPaint(textPaint);
        // Draw using a static layout
        StaticLayout layout = new StaticLayout(text, paint, width, Alignment.ALIGN_NORMAL, mSpacingMult, mSpacingAdd, false);
        // Check that we have a least one line of rendered text
        if (layout.getLineCount() > 0) {
            // Since the line at the specific vertical position would be cut off,
            // we must trim up to the previous line
            int lastLine = layout.getLineForVertical(height) - 1;
            // If the text would not even fit on a single line, clear it
            if (lastLine < 0) {
                setText("");
            }
            // Otherwise, trim to the previous line and add an ellipsis
            else {
                int start = layout.getLineStart(lastLine);
                int end = layout.getLineEnd(lastLine);
                float lineWidth = layout.getLineWidth(lastLine);
                float ellipseWidth = textPaint.measureText(mEllipsis);

                // Trim characters off until we have enough room to draw the ellipsis
                while (width < lineWidth + ellipseWidth) {
                    lineWidth = textPaint.measureText(text.subSequence(start, --end + 1).toString());
                }
                setText(text.subSequence(0, end) + mEllipsis);
            }
        }
    }

    // Some devices try to auto adjust line spacing, so force default line spacing
    // and invalidate the layout as a side effect
    setTextSize(TypedValue.COMPLEX_UNIT_PX, targetTextSize);
    setLineSpacing(mSpacingAdd, mSpacingMult);

    // Notify the listener if registered
    if (mTextResizeListener != null) {
        mTextResizeListener.onTextResize(this, oldTextSize, targetTextSize);
    }

    // Reset force resize flag
    mNeedsResize = false;
}
Example 7
Source File: AutoResizeTextView.java    From juicessh-performancemonitor with Apache License 2.0 4 votes vote down vote up 
/**
 * Resize the text size with specified width and height
 * @param width
 * @param height
 */
public void resizeText(int width, int height) {
    CharSequence text = getText();
    // Do not resize if the view does not have dimensions or there is no text
    if(text == null || text.length() == 0 || height <= 0 || width <= 0 || mTextSize == 0) {
        return;
    }

    // Get the text view's paint object
    TextPaint textPaint = getPaint();

    // Store the current text size
    float oldTextSize = textPaint.getTextSize();
    // If there is a max text size set, use the lesser of that and the default text size
    float targetTextSize = mMaxTextSize > 0 ? Math.min(mTextSize, mMaxTextSize) : mTextSize;

    // Get the required text height
    int textHeight = getTextHeight(text, textPaint, width, targetTextSize);

    // Until we either fit within our text view or we had reached our min text size, incrementally try smaller sizes
    while(textHeight > height && targetTextSize > mMinTextSize) {
        targetTextSize = Math.max(targetTextSize - 2, mMinTextSize);
        textHeight = getTextHeight(text, textPaint, width, targetTextSize);
    }

    // If we had reached our minimum text size and still don't fit, append an ellipsis
    if(mAddEllipsis && targetTextSize == mMinTextSize && textHeight > height) {
        // Draw using a static layout
        StaticLayout layout = new StaticLayout(text, textPaint, width, Alignment.ALIGN_NORMAL, mSpacingMult, mSpacingAdd, false);
        // Check that we have a least one line of rendered text
        if(layout.getLineCount() > 0) {
            // Since the line at the specific vertical position would be cut off,
            // we must trim up to the previous line
            int lastLine = layout.getLineForVertical(height) - 1;
            // If the text would not even fit on a single line, clear it
            if(lastLine < 0) {
                setText("");
            }
            // Otherwise, trim to the previous line and add an ellipsis
            else {
                int start = layout.getLineStart(lastLine);
                int end = layout.getLineEnd(lastLine);
                float lineWidth = layout.getLineWidth(lastLine);
                float ellipseWidth = textPaint.measureText(mEllipsis);

                // Trim characters off until we have enough room to draw the ellipsis
                while(width < lineWidth + ellipseWidth) {
                    lineWidth = textPaint.measureText(text.subSequence(start, --end + 1).toString());
                }
                setText(text.subSequence(0, end) + mEllipsis);
            }
        }
    }

    // Some devices try to auto adjust line spacing, so force default line spacing
    // and invalidate the layout as a side effect
    textPaint.setTextSize(targetTextSize);
    setLineSpacing(mSpacingAdd, mSpacingMult);

    // Notify the listener if registered
    if(mTextResizeListener != null) {
        mTextResizeListener.onTextResize(this, oldTextSize, targetTextSize);
    }

    // Reset force resize flag
    mNeedsResize = false;
}