Qt 5.8 | Qt Quick | QML Types | BorderImageMesh QML Type

Qt 5.8.0 Reference Documentation

# BorderImageMesh QML Type

Defines a mesh with vertices arranged like those of a BorderImage. More...

Import Statement: | import QtQuick 2.7
Since: | Qt 5.8

- List of all members, including inherited members

## Properties

- border
  - border.left : int
  - border.right : int
  - border.top : int
  - border.bottom : int
- horizontalTileMode : enumeration
- size : size
- verticalTileMode : enumeration

## Detailed Description

BorderImageMesh provides BorderImage-like capabilities to a ShaderEffect without the need for a potentially costly ShaderEffectSource.

The following are functionally equivalent:

      BorderImage {
          id: borderImage
          border {
              left: 10
              right: 10
              top: 10
              bottom: 10
          }
          source: "myImage.png"
          visible: false
      }
      ShaderEffectSource {
          id: effectSource
          sourceItem: borderImage
          visible: false
      }
      ShaderEffect {
          property var source: effectSource
          ...
      }

      Image {
          id: image
          source: "myImage.png"
          visible: false
      }
      ShaderEffect {
          property var source: image
          mesh: BorderImageMesh {
              border {
                  left: 10
                  right: 10
                  top: 10
                  bottom: 10
              }
              size: image.sourceSize
          }
          ...
      }

But the BorderImageMesh version can typically be better optimized.

## Property Documentation

border group
border.left : int
border.right : int
border.top : int
border.bottom : int

The 4 border lines (2 horizontal and 2 vertical) break the image into 9 sections, as shown below:

Each border line (left, right, top, and bottom) specifies an offset in pixels from the respective edge of the mesh. By default, each border line has a value of 0.

For example, the following definition sets the bottom line 10 pixels up from the bottom of the mesh:

      BorderImageMesh {
          border.bottom: 10
          // ...
      }

horizontalTileMode : enumeration

This property describes how to repeat or stretch the middle parts of an image.

- BorderImage.Stretch - Scales the image to fit to the available area.
- BorderImage.Repeat - Tile the image until there is no more space. May crop the last image.
- BorderImage.Round - Like Repeat, but scales the images down to ensure that the last image is not cropped.

The default tile mode for each property is BorderImage.Stretch.

size : size

The base size of the mesh. This generally corresponds to the sourceSize of the image being used by the ShaderEffect.

verticalTileMode : enumeration

This property describes how to repeat or stretch the middle parts of an image.

- BorderImage.Stretch - Scales the image to fit to the available area.
- BorderImage.Repeat - Tile the image until there is no more space. May crop the last image.
- BorderImage.Round - Like Repeat, but scales the images down to ensure that the last image is not cropped.

The default tile mode for each property is BorderImage.Stretch.