当上面的组件未在jasper中显示时，如何使用positionType来拉起组件? [英] How to use positionType to pull a component up when the above component is not displayed in jasper?

问题描述

positionType="Float"会将自身拉下.但是，如果上述组件缩小/未显示，则不会向上移动.

positionType="Float" on a component pulls itself down if the above component stretches. But doesn't move up if the above component shrinks/not displayed.

下面是使用的版本:

<dependency>
     <groupId>net.sf.jasperreports</groupId>
     <artifactId>jasperreports-fonts</artifactId>
     <version>6.0.0</version>
</dependency>

将重现上述问题的代码:

Code that will reproduce the above issue:

<?xml version="1.0" encoding="UTF-8"?>
<!-- Created with Jaspersoft Studio version 6.6.0.final using JasperReports Library version 6.6.0  -->
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="sample" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="acaa0a15-dc0f-462c-8d16-14f0b7325696">
    <property name="com.jaspersoft.studio.data.defaultdataadapter" value="One Empty Record"/>
    <summary>
        <band height="500" splitType="Prevent">
            <staticText>
                <reportElement positionType="Float" x="0" y="19" width="381" height="41" isRemoveLineWhenBlank="true" uuid="9547d877-993c-4bb4-becc-cf70a0cc1bc2">
                    <printWhenExpression><![CDATA[false]]></printWhenExpression>
                </reportElement>
                <text><![CDATA[Text11111111111111111111]]></text>
            </staticText>
            <staticText>
                <reportElement positionType="Float" x="0" y="150" width="381" height="41" isRemoveLineWhenBlank="true" uuid="9e7dbe2e-2fed-41c8-82ce-c0c6886c8eda">
                    <printWhenExpression><![CDATA[true]]></printWhenExpression>
                </reportElement>
                <text><![CDATA[Text22222222222222222222]]></text>
            </staticText>
        </band>
    </summary>
</jasperReport>

以上代码仅显示第二个静态文本组件，而不显示第一个.因为第一个中的printWhenExpression是false.

Above code displays only second static text component but not first. Because the printWhenExpression in the first is false.

现在，我希望第二个组件代替第一个组件显示，但是不希望显示.结果，我在那里得到了空间.

Now I want the second component to display in place of first, but it doesn't. As a result I'm getting space there.

如何删除空白?

推荐答案

来自 JasperReports文档强调我的

positionType ="Float" -如果元素上方的其他元素将其向下推，则该元素将在其父部分中浮动.它会尝试保留其与紧邻其上方的相邻元素之间的距离.

第二个reportElement不会向上移动到第一个reportElement所在的位置，因为它保留了它们之间的距离.下图所示的距离:

The second reportElement will not move up to where the first reportElement is because it conserve the distance between them. The distance illustrated in image below:

如果您希望reportElement 2取代reportElement 1，那么您的解决方案是删除此空间！

Your solution is remove this space!, if you like reportElement 2 to take reportElement 1 place

删除该空间，但如果第二个reportElement存在，则保留其位置.增加reportElement 1的高度.

Remove the space but keep position of second reportElement if first is present. Increase height of reportElement 1.

通过将reportElement 2向上移动来删除空间，如果它是textField(动态文本)，则在reportElement 1溢出时，可以在reportElement 1上使用isStretchWithOverflow="true"来将reportElement 2向下推.

Remove the space by moving reportElement 2 up, if it is a textField (dynamic text) you can use isStretchWithOverflow="true" on reportElement 1 to push reportElement 2 down if reportElement 1 is overflowing.

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