Java StaticLayout.getLineWidth方法代码示例

import android.text.StaticLayout; //导入方法依赖的package包/类
public void setTitle(String title) {
    stringBuilder.setLength(0);
    if (title != null && title.length() > 0) {
        stringBuilder.append(title.substring(0, 1));
    }

    if (stringBuilder.length() > 0) {
        String text = stringBuilder.toString().toUpperCase();
        try {
            textLayout = new StaticLayout(text, namePaint, AndroidUtilities.dp(100), Layout.Alignment.ALIGN_NORMAL, 1.0f, 0.0f, false);
            if (textLayout.getLineCount() > 0) {
                textLeft = textLayout.getLineLeft(0);
                textWidth = textLayout.getLineWidth(0);
                textHeight = textLayout.getLineBottom(0);
            }
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
    } else {
        textLayout = null;
    }
}
 

import android.text.StaticLayout; //导入方法依赖的package包/类
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
@Override
public int onTestSize(int suggestedSize, RectF availableSPace) {
    mPaint.setTextSize(suggestedSize);
    String text = getText().toString();
    boolean singleline = getMaxLines() == 1;
    if (singleline) {
        mTextRect.bottom = mPaint.getFontSpacing();
        mTextRect.right = mPaint.measureText(text);
    } else {
        StaticLayout layout = new StaticLayout(text, mPaint,
                mWidthLimit, Alignment.ALIGN_NORMAL, mSpacingMult,
                mSpacingAdd, true);
        // return early if we have more lines
        if (getMaxLines() != NO_LINE_LIMIT
                && layout.getLineCount() > getMaxLines()) {
            return 1;
        }
        mTextRect.bottom = layout.getHeight();
        int maxWidth = -1;
        for (int i = 0; i < layout.getLineCount(); i++) {
            if (maxWidth < layout.getLineWidth(i)) {
                maxWidth = (int) layout.getLineWidth(i);
            }
        }
        mTextRect.right = maxWidth;
    }

    mTextRect.offsetTo(0, 0);
    if (availableSPace.contains(mTextRect)) {
        // may be too small, don't worry we will find the best match
        return -1;
    } else {
        // too big
        return 1;
    }
}
 

import android.text.StaticLayout; //导入方法依赖的package包/类
private void createLayout(int width) {
    if (text != null) {
        try {
            CharSequence string = TextUtils.ellipsize(text, textPaint, width, TextUtils.TruncateAt.END);
            layout = new StaticLayout(string, 0, string.length(), textPaint, width, Layout.Alignment.ALIGN_NORMAL, 1.0f, 0.0f, false);

            /*if (metrics == null) {
                metrics = BoringLayout.isBoring(text, textPaint);
            }
            if (layout == null) {
                layout = BoringLayout.make(text, textPaint, width, Layout.Alignment.ALIGN_NORMAL, 1.0f, 0.0f, metrics, false, TextUtils.TruncateAt.END, width);
            } else {
                layout = ((BoringLayout) layout).replaceOrMake(text, textPaint, width, Layout.Alignment.ALIGN_NORMAL, 1.0f, 0.0f, metrics, false, TextUtils.TruncateAt.END, width);
            }*/

            /*if (spannableStringBuilder == null) {
                spannableStringBuilder = new SpannableStringBuilder(text);
                layout = new DynamicLayout(text, text, textPaint, width, Layout.Alignment.ALIGN_NORMAL, 1.0f, 0.0f, false, TextUtils.TruncateAt.END, width);
            } else {
                spannableStringBuilder.replace(0, text.length(), text);
            }*/

            if (layout.getLineCount() > 0) {
                if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT) {
                    offsetX = -(int) layout.getLineLeft(0);
                } else if (layout.getLineLeft(0) == 0) {
                    offsetX = (int) (width - layout.getLineWidth(0));
                } else {
                    offsetX = 0;
                }
            }
        } catch (Exception e) {
            //ignore
        }
    }
}
 

import android.text.StaticLayout; //导入方法依赖的package包/类
public void setInfo(int id, String firstName, String lastName, boolean isBroadcast) {
    if (isProfile) {
        color = arrColorsProfiles[getColorIndex(id)];
    } else {
        color = arrColors[getColorIndex(id)];
    }

    drawBrodcast = isBroadcast;

    if (firstName == null || firstName.length() == 0) {
        firstName = lastName;
        lastName = null;
    }

    stringBuilder.setLength(0);
    if (firstName != null && firstName.length() > 0) {
        stringBuilder.append(firstName.substring(0, 1));
    }
    if (lastName != null && lastName.length() > 0) {
        String lastch = null;
        for (int a = lastName.length() - 1; a >= 0; a--) {
            if (lastch != null && lastName.charAt(a) == ' ') {
                break;
            }
            lastch = lastName.substring(a, a + 1);
        }
        if (Build.VERSION.SDK_INT >= 16) {
            stringBuilder.append("\u200C");
        }
        stringBuilder.append(lastch);
    } else if (firstName != null && firstName.length() > 0) {
        for (int a = firstName.length() - 1; a >= 0; a--) {
            if (firstName.charAt(a) == ' ') {
                if (a != firstName.length() - 1 && firstName.charAt(a + 1) != ' ') {
                    if (Build.VERSION.SDK_INT >= 16) {
                        stringBuilder.append("\u200C");
                    }
                    stringBuilder.append(firstName.substring(a + 1, a + 2));
                    break;
                }
            }
        }
    }

    if (stringBuilder.length() > 0) {
        String text = stringBuilder.toString().toUpperCase();
        try {
            textLayout = new StaticLayout(text, (smallStyle ? namePaintSmall : namePaint), AndroidUtilities.dp(100), Layout.Alignment.ALIGN_NORMAL, 1.0f, 0.0f, false);
            if (textLayout.getLineCount() > 0) {
                textLeft = textLayout.getLineLeft(0);
                textWidth = textLayout.getLineWidth(0);
                textHeight = textLayout.getLineBottom(0);
            }
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
    } else {
        textLayout = null;
    }
}
 

import android.text.StaticLayout; //导入方法依赖的package包/类
/**
 * 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;
}
 

import android.text.StaticLayout; //导入方法依赖的package包/类
/**
 * 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);
}
 

import android.text.StaticLayout; //导入方法依赖的package包/类
/**
 * 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;
}