本文整理汇总了Java中java.awt.font.TextLayout.getVisibleAdvance方法的典型用法代码示例。如果您正苦于以下问题：Java TextLayout.getVisibleAdvance方法的具体用法？Java TextLayout.getVisibleAdvance怎么用？Java TextLayout.getVisibleAdvance使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类java.awt.font.TextLayout的用法示例。
在下文中一共展示了TextLayout.getVisibleAdvance方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: test
import java.awt.font.TextLayout; //导入方法依赖的package包/类
public void test() {
// construct a paragraph as follows: MIXED + [SPACING + WORD] + ...
StringBuffer text = new StringBuffer(MIXED);
for (int i=0; i < NUM_WORDS; i++) {
text.append(SPACING);
text.append(WORD);
}
AttributedString attrString = new AttributedString(text.toString());
attrString.addAttribute(TextAttribute.SIZE, new Float(24.0));
LineBreakMeasurer measurer = new LineBreakMeasurer(attrString.getIterator(),
DEFAULT_FRC);
// get width of a space-word sequence, in context
int sequenceLength = WORD.length()+SPACING.length();
measurer.setPosition(text.length() - sequenceLength);
TextLayout layout = measurer.nextLayout(10000.0f);
if (layout.getCharacterCount() != sequenceLength) {
throw new Error("layout length is incorrect!");
}
final float sequenceAdvance = layout.getVisibleAdvance();
float wrappingWidth = sequenceAdvance * 2;
// now run test with a variety of widths
while (wrappingWidth < (sequenceAdvance*NUM_WORDS)) {
measurer.setPosition(0);
checkMeasurer(measurer,
wrappingWidth,
sequenceAdvance,
text.length());
wrappingWidth += sequenceAdvance / 5;
}
}
示例2: checkMeasurer
import java.awt.font.TextLayout; //导入方法依赖的package包/类
/**
* Iterate through measurer and check that every line is
* not too long and not too short, but just right.
*/
private void checkMeasurer(LineBreakMeasurer measurer,
float wrappingWidth,
float sequenceAdvance,
int endPosition) {
do {
TextLayout layout = measurer.nextLayout(wrappingWidth);
float visAdvance = layout.getVisibleAdvance();
// Check that wrappingWidth-sequenceAdvance < visAdvance
// Also, if we're not at the end of the paragraph,
// check that visAdvance <= wrappingWidth
if (visAdvance > wrappingWidth) {
// line is too long for given wrapping width
throw new Error("layout is too long");
}
if (measurer.getPosition() < endPosition) {
if (visAdvance <= wrappingWidth - sequenceAdvance) {
// line is too short for given wrapping width;
// another word would have fit
throw new Error("room for more words on line. diff=" +
(wrappingWidth - sequenceAdvance - visAdvance));
}
}
} while (measurer.getPosition() != endPosition);
}