android.text.Layout#getLineBaseline ( )源码实例Demo

下面列出了android.text.Layout#getLineBaseline ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： HTextView 文件： FadeText.java

@Override
protected void drawFrame(Canvas canvas) {
    Layout layout = mHTextView.getLayout();
    int gapIndex = 0;
    for (int i = 0; i < layout.getLineCount(); i++) {
        int lineStart = layout.getLineStart(i);
        int lineEnd = layout.getLineEnd(i);
        float lineLeft = layout.getLineLeft(i);
        float lineBaseline = layout.getLineBaseline(i);
        String lineText = mText.subSequence(lineStart, lineEnd).toString();
        for (int c = 0; c < lineText.length(); c++) {
            int alpha = alphaList.get(gapIndex);
            mPaint.setAlpha((int) ((255 - alpha) * progress + alpha));
            canvas.drawText(String.valueOf(lineText.charAt(c)), lineLeft, lineBaseline, mPaint);
            lineLeft += gapList.get(gapIndex++);
        }
    }
}

源代码2 项目： MaterialBanner 文件： MessageView.java

/**
 * Return the offset of the widget's last text line baseline from the widget's top
 * boundary. If this widget does not support baseline alignment, this method returns -1.
 *
 * @return the offset of the baseline of the last text line within the widget's bounds or -1
 * if baseline alignment is not supported
 */
@Override
public int getBaseline() {
    Layout layout = getLayout();
    if (layout == null) {
        return super.getBaseline();
    }
    int baselineOffset = super.getBaseline() - layout.getLineBaseline(0);
    return baselineOffset + layout.getLineBaseline(layout.getLineCount() - 1);
}

源代码3 项目： java-n-IDE-for-Android 文件： HighlightEditor.java

/**
 * @param line   - current line
 * @param column - column of line
 * @return Position (in pixels) for edittext at line and column
 */
public Point getDebugPosition(int line, int column, int gravity) {
    Layout layout = getLayout();
    if (layout != null) {
        int pos = layout.getLineStart(line) + column;

        int baseline = layout.getLineBaseline(line);
        int ascent = layout.getLineAscent(line);

        int offsetHorizontal = (int) layout.getPrimaryHorizontal(pos) + mLinePadding; //x

        float y;
        int offsetVertical = 0;

        if (gravity == Gravity.BOTTOM) {
            y = baseline + ascent;
            if (verticalScroll != null) {
                offsetVertical = (int) ((y + mCharHeight) - verticalScroll.getScrollY());
            } else {
                offsetVertical = (int) ((y + mCharHeight) - getScrollY());
            }
            return new Point(offsetHorizontal, offsetVertical);
        } else if (gravity == Gravity.TOP) {
            y = layout.getLineTop(line);
            if (verticalScroll != null) {
                offsetVertical = (int) (y - verticalScroll.getScrollY());
            } else {
                offsetVertical = (int) (y - getScrollY());
            }
            return new Point(offsetHorizontal, offsetVertical);
        }

        return new Point(offsetHorizontal, offsetVertical);
    }
    return new Point();
}

源代码4 项目： java-n-IDE-for-Android 文件： HighlightEditor.java

@Override
public void onPopupChangePosition() {
    try {
        Layout layout = getLayout();
        if (layout != null) {
            int pos = getSelectionStart();
            int line = layout.getLineForOffset(pos);
            int baseline = layout.getLineBaseline(line);
            int ascent = layout.getLineAscent(line);

            float x = layout.getPrimaryHorizontal(pos);
            float y = baseline + ascent;

            int offsetHorizontal = (int) x + mLinePadding;
            setDropDownHorizontalOffset(offsetHorizontal);

            int heightVisible = getHeightVisible();
            int offsetVertical = 0;
            if (verticalScroll != null) {
                offsetVertical = (int) ((y + mCharHeight) - verticalScroll.getScrollY());
            } else {
                offsetVertical = (int) ((y + mCharHeight) - getScrollY());
            }

            int tmp = offsetVertical + getDropDownHeight() + mCharHeight;
            if (tmp < heightVisible) {
                tmp = offsetVertical + mCharHeight / 2;
                setDropDownVerticalOffset(tmp);
            } else {
                tmp = offsetVertical - getDropDownHeight() - mCharHeight;
                setDropDownVerticalOffset(tmp);
            }
        }
    } catch (Exception ignored) {
    }
}

源代码5 项目： PhoneProfilesPlus 文件： ImprovedBulletSpan.java

public void drawLeadingMargin(Canvas canvas, Paint paint, int x, int dir,
                              int top, int baseline, int bottom, CharSequence text,
                              int start, int end, boolean first, Layout layout) {

    if (((Spanned)text).getSpanStart(this) == start) {
        Style style = paint.getStyle();
        paint.setStyle(Style.FILL);

        float yPosition;
        if (layout != null) {
            int line = layout.getLineForOffset(start);
            yPosition = (float)layout.getLineBaseline(line) - (float)this.bulletRadius * 2.0F;
        } else {
            yPosition = (float)(top + bottom) / 2.0F;
        }

        float xPosition = (float)(x + dir * this.bulletRadius);

        if (canvas.isHardwareAccelerated()) {
            if (this.mBulletPath == null) {
                this.mBulletPath = new Path();
                this.mBulletPath.addCircle(0.0F, 0.0F, (float)this.bulletRadius, Direction.CW);
            }

            canvas.save();
            canvas.translate(xPosition, yPosition);
            canvas.drawPath(this.mBulletPath, paint);
            canvas.restore();
        } else {
            canvas.drawCircle(xPosition, yPosition, (float)this.bulletRadius, paint);
        }

        paint.setStyle(style);
    }

}

源代码6 项目： Dashchan 文件： OverlineSpan.java

public static void draw(TextView textView, Canvas canvas) {
	Layout layout = textView.getLayout();
	if (layout != null) {
		CharSequence text = textView.getText();
		if (text instanceof Spanned) {
			Spanned spanned = (Spanned) text;
			OverlineSpan[] spans = spanned.getSpans(0, spanned.length(), OverlineSpan.class);
			if (spans != null && spans.length > 0) {
				int paddingTop = textView.getTotalPaddingTop();
				int paddingLeft = textView.getPaddingLeft();
				int shift = (int) (textView.getTextSize() * 8f / 9f);
				float thickness = textView.getTextSize() / 15f - 0.25f;
				int color = textView.getCurrentTextColor();
				PAINT.setColor(color);
				PAINT.setStrokeWidth(thickness);
				for (OverlineSpan span : spans) {
					int start = spanned.getSpanStart(span);
					int end = spanned.getSpanEnd(span);
					int lineStart = layout.getLineForOffset(start);
					int lineEnd = layout.getLineForOffset(end);
					for (int i = lineStart; i <= lineEnd; i++) {
						float left = i == lineStart ? layout.getPrimaryHorizontal(start) : layout.getLineLeft(i);
						float right = i == lineEnd ? layout.getPrimaryHorizontal(end) : layout.getLineRight(i);
						float top = layout.getLineBaseline(i) - shift + 0.5f;
						canvas.drawLine(paddingLeft + left, paddingTop + top, paddingLeft + right,
								paddingTop + top, PAINT);
					}
				}
			}
		}
	}
}

源代码7 项目： CodeEditor 文件： TextProcessor.java

protected void onPopupChangePosition() {
        try {
            Layout layout = getLayout();
            if (layout != null) {

                int pos = getSelectionStart();
                int line = layout.getLineForOffset(pos);
                int baseline = layout.getLineBaseline(line);
                int ascent = layout.getLineAscent(line);

                Rect bounds = new Rect();
                Paint textPaint = getPaint();
                String sample="A";
                textPaint.getTextBounds(sample, 0, sample.length(), bounds);
                int width = bounds.width()/sample.length();


                float x = layout.getPrimaryHorizontal(pos);
                float y = baseline + ascent;

                int offsetHorizontal = (int) x + mGutterWidth;
                setDropDownHorizontalOffset(offsetHorizontal);

                int heightVisible = getHeightVisible();
                int offsetVertical = (int) ((y + mCharHeight) - getScrollY());

                int tmp = offsetVertical + getDropDownHeight() + mCharHeight;
                //if (tmp < heightVisible) {
                    tmp = -h + ((offsetVertical*2 / (mCharHeight)) * (mCharHeight / 2))+(mCharHeight/2);
                    setDropDownVerticalOffset(tmp);
                    //((Activity)(mContext)).setTitle("ov :"+offsetVertical +" ch "+mCharHeight+" tmp"+tmp +"h "+h+"p:"+pos);
//                } else {
//                    tmp = offsetVertical - getDropDownHeight() - mCharHeight;
//                    setDropDownVerticalOffset(tmp);
//                    ((Activity)(mContext)).setTitle(" 2 tmp :"+tmp);
//                }


//                int pos = getSelectionStart();
//                int line = layout.getLineForOffset(pos);
//                int baseline = layout.getLineBaseline(line);
//                int ascent = layout.getLineAscent(line);
//
//                float x = layout.getPrimaryHorizontal(pos);
//                float y = baseline + ascent;
//
//                int offsetHorizontal = (int) x + mGutterWidth;
//                setDropDownHorizontalOffset(offsetHorizontal);
//
//                //    int heightVisible = getHeightVisible();
//                int offsetVertical = (int) ((y + mCharHeight) - getScrollY());
//
//                int tmp = offsetVertical + getDropDownHeight() + mCharHeight;
////                if (tmp < heightVisible) {
//                tmp = -(offsetVertical + mCharHeight) + ((offsetVertical / mCharHeight) * (mCharHeight / 2));
//                setDropDownVerticalOffset(tmp);
////                } else {
////                    tmp = offsetVertical - getDropDownHeight() - mCharHeight;
////                    setDropDownVerticalOffset(tmp);
////                }

            }
        } catch (Exception e) {
            Logger.error(TAG, e);
        }
    }