Components/Data display

EImageViewer Image viewer

import EUI 1.0

Examples

Thumbnails, flip and download

QML sourceQML

import EUI 1.0 import QtQuick 2.15 import QtQuick.Layouts 1.15 import QtQuick.Controls 2.15 EImageViewer { allowDownload: false width: 260 height: 160 preview: true showThumbnails: true source: "qrc:/example/images/gallery/lake.jpg" previewSrcList: ["qrc:/example/images/gallery/lake.jpg", "qrc:/example/images/gallery/neon-red.jpg", "qrc:/example/images/gallery/neon-purple.jpg", "qrc:/example/images/gallery/tree.jpg", "qrc:/example/images/gallery/ocean.jpg"] }

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Hide download action

QML sourceQML

import EUI 1.0 import QtQuick 2.15 import QtQuick.Layouts 1.15 import QtQuick.Controls 2.15 EImageViewer { width: 260 height: 160 preview: true allowDownload: false showThumbnails: true source: "qrc:/example/images/gallery/lake.jpg" previewSrcList: ["qrc:/example/images/gallery/lake.jpg", "qrc:/example/images/gallery/neon-red.jpg", "qrc:/example/images/gallery/neon-purple.jpg", "qrc:/example/images/gallery/tree.jpg", "qrc:/example/images/gallery/ocean.jpg"] }

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Standalone image viewer

QML sourceQML

import EUI 1.0 import QtQuick 2.15 import QtQuick.Layouts 1.15 import QtQuick.Controls 2.15 Column { EButton { text: qsTr("Open preview") onClicked: webDataViewer.visible = true } EImageViewer { allowDownload: false id: webDataViewer visible: false urlList: ["qrc:/example/images/gallery/lake.jpg", "qrc:/example/images/gallery/neon-red.jpg", "qrc:/example/images/gallery/neon-purple.jpg", "qrc:/example/images/gallery/tree.jpg", "qrc:/example/images/gallery/ocean.jpg"] onPreviewClosed: visible = false } }

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Properties

PropertyDescriptionValues and default

closeOnPressEscapebool

Allow Escape to close the component.

Defaulttrue

enabledbool

Allow interaction; false disables the control.

Defaulttrue

errorDelegateComponent

Component slot for custom error state; null uses the default content. See this page’s examples for delegate context.

Defaultnull

errorTextstring

Error or loading-failure text.

DefaultLocalized text

fillModeint

How the image scales and fills its available space.

Image.Stretch
Image.PreserveAspectFit
Image.PreserveAspectCrop
Image.Tile
Image.TileVertically
Image.TileHorizontally
Image.Pad

DefaultImage.PreserveAspectFit

heightreal

Component size in pixels; may be bound to its parent layout.

Default0

hideOnClickModalbool

Close image preview when its backdrop is clicked.

Defaulttrue

infinitebool

Allow image preview to wrap between the first and last images.

Defaulttrue

initialIndexint

Initially displayed item index, starting at 0.

Default0

lazybool

Create content or load data on demand; data controls use load / lazyLoad.

Defaultfalse

maxScalereal

Minimum or maximum image preview scale.

Default7

minScalereal

Minimum or maximum image preview scale.

Default0.2

placeholderDelegateComponent

Component slot for custom image loading placeholder; null uses the default content. See this page’s examples for delegate context.

Defaultnull

previewbool

Enable image preview.

Defaulttrue

previewSrcListvar

Array of image URLs for preview.

Default[]

showProgressbool

Show image loading progress.

Defaulttrue

sourceurl

Image or media resource URL supported by Qt.

DefaultDynamic binding

toolbarDelegateComponent

Component slot for custom preview toolbar; null uses the default content. See this page’s examples for delegate context.

Defaultnull

urlListalias

Array of image URLs for preview.

DefaultAlias: control.previewSrcList

viewerDelegateComponent

Component slot for custom image viewer; null uses the default content. See this page’s examples for delegate context.

Defaultnull

visiblebool

Whether the component is visible.

Defaulttrue

widthreal

Component size in pixels; may be bound to its parent layout.

Default0

zoomRatereal

Image zoom multiplier per step.

Default1.2

previewIndexintRead only

Current preview image index.

DefaultComputed at runtime

previewRotationrealRead only

Current preview image rotation.

DefaultComputed at runtime

previewScalerealRead only

Current preview image scale.

DefaultComputed at runtime

previewSourcesvarRead only

Resolved preview image URL array.

DefaultComputed at runtime

previewVisibleboolRead only

Whether image preview is open.

DefaultComputed at runtime

statusintRead only

Current image loading status.

Image.Null
Image.Ready
Image.Loading
Image.Error

DefaultComputed at runtime

allowDownloadbool

Show and enable saving the preview image.

Defaulttrue

showThumbnailsbool

Show thumbnail navigation during image preview.

Defaultfalse

downloadBusyboolRead only

Whether an image network download is running.

DefaultimageFiles.busy

previewFlippedVerticalboolRead only

Whether the preview image is flipped vertically.

Defaultinternal.flippedVertical

previewFlippedHorizontalboolRead only

Whether the preview image is flipped horizontally.

Defaultinternal.flippedHorizontal

Signals

SignaturePurpose

loaded()

Emitted after the image loads successfully.

loadError()

Emitted when the image fails to load; use it to show fallback content.

previewShown()

Emitted after the image preview opens.

previewClosed()

Emitted after the image preview closes.

previewRotated(real angle)

Emitted after rotating the preview; angle is the current rotation angle.

previewSwitched(int index)

Emitted after switching preview images; index is the current image index.

downloaded(url destination)

Emitted after saving the image; destination is the saved location.

downloadFailed(string message)

Emitted when an image download fails; message describes the error.

Methods

SignaturePurpose

closePreview()

Close the image preview.

loadNow()

Load the image immediately without waiting for viewport visibility.

showPreview(index)

Show the image preview, starting at index.

resetPreview()

Reset preview zoom, rotation, and flip state.

rotatePreview(angle)

Rotate the preview image by angle degrees.

flipPreview(vertical)

Flip the preview image vertically when vertical is true, or horizontally otherwise.

downloadPreview(destination)

Save the current preview image to destination.

zoomPreview(factor)

Scale the preview image by factor.

openPreview(index)

Open the image preview, starting at index.

setActiveItem(index)

Activate the item specified by value or index.