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  1. Qt
  2. QTBUG-97648

TextField clipping breaks batching; so maybe avoid populating characters outside?

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      seen on IRC:

      <Murat> Hi all ! We have significant number of text fields in out quick scene and from what I can observe the renderer is not able to batch them properly due to the clipping that comes with TextField that we can't get rid of :
      <Murat> https://code.woboq.org/qt5/qtquickcontrols2/src/quicktemplates2/qquicktextfield.cpp.html#911
      <Murat> We can use TextInput which doesn't have the clipping but then, as you can imagine, the text is drawn beyond the borders of our text field boxes
      <Murat> Any ideas how I can fix this ?
      <Murat> Any alternatives ?

      This needs confirmation. If true, it could be another use for viewports as in https://codereview.qt-project.org/c/qt/qtdeclarative/+/282970 : maybe we don't need to clip if we limit the characters rendered to the rectangular area available. On the downside, redoing text layout while scrolling horizontally (e.g. using arrow keys to move the text cursor) could also be expensive; but sounds worth investigating.

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        Issue Links

          is required for

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-79878 TextField always clips

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Open
          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-68769 Setting RenderType on Controls 2 Textfield results in cut-off text on high-dpi displays

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Reported

          Epic - Created by Jira Software - do not edit or delete. Issue type for a big user story that needs to be broken down. QTBUG-90734 Make large content flickable

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-58724 A float value padding causes display issue

          • P4: Low - Would be nice to fix, but it's not very important.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-74962 Text inside of TextInput is rendered on top and beyond the border even with specified padding

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-98355 SpinBox text not clipped when larger than available width

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-84280 TextArea inside Flickable - cursor does not appear with LayoutMirroring.enabled

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed
          replaces

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-21969 Text that is wider than TextInput element doesn't get clipped by default

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed
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              srutledg Shawn Rutledge
              srutledg Shawn Rutledge
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