public interface LeadingMarginSpan
implements ParagraphStyle
android.text.style.LeadingMarginSpan |
Known Indirect Subclasses |
影响领先优势的段落风格。 单个段落可以有多个前导裕量跨度; 他们将按顺序进行渲染,每个都会将边缘添加到之前的边缘。 在从右到左的段落中,线段的右边缘在右侧。
LeadingMarginSpans应该从第一个字符附加到单个段落的最后一个字符。
Nested classes |
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interface |
LeadingMarginSpan.LeadingMarginSpan2 |
class |
LeadingMarginSpan.Standard LeadingMarginSpan的标准实现,它调整边距但不做任何渲染。 |
Public methods |
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abstract void |
drawLeadingMargin(Canvas c, Paint p, int x, int dir, int top, int baseline, int bottom, CharSequence text, int start, int end, boolean first, Layout layout) 呈现领先优势。 |
abstract int |
getLeadingMargin(boolean first) 返回调整前导余量的金额。 |
void drawLeadingMargin (Canvas c, Paint p, int x, int dir, int top, int baseline, int bottom, CharSequence text, int start, int end, boolean first, Layout layout)
呈现领先优势。 这在保证金被getLeadingMargin(boolean)
返回的值调整之前getLeadingMargin(boolean)
。
Parameters | |
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c |
Canvas : the canvas |
p |
Paint : the paint. The this should be left unchanged on exit. |
x |
int : the current position of the margin |
dir |
int : the base direction of the paragraph; if negative, the margin is to the right of the text, otherwise it is to the left. |
top |
int : the top of the line |
baseline |
int : the baseline of the line |
bottom |
int : the bottom of the line |
text |
CharSequence : the text |
start |
int : the start of the line |
end |
int : the end of the line |
first |
boolean : true if this is the first line of its paragraph |
layout |
Layout : the layout containing this line |
int getLeadingMargin (boolean first)
返回调整前导余量的金额。 正值远离段落的前沿,负值趋向于它。
Parameters | |
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first |
boolean : true if the request is for the first line of a paragraph, false for subsequent lines |
Returns | |
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int |
the offset for the margin. |