QtQuick2 Support Status

This page is used to track the status of support for QtQuick2 throughout GammaRay.

Core

• allow plug-ins to add custom property editor pages [DONE]
• allow navigating to objects referred to in properties [DONE]

QML Support Plug-in

• Show attached properties of an object [DONE]
• properties for QQmlComponent, QQmlContext, QQmlEngine [DONE]
• display of QQmlError [DONE]
• support for QQmlListProperty [DONE]
• display QML IDs in the object tree [DONE]
• QML binding/property dependency tree visualizer
  • static: Figure out binding dependencies from the internal QML engine housekeeping
  • dynamic: Figure out binding dependencies from signal spy (only for bindings that changed at least once)
    • only if static not possible

QtQuick2 Scene Inspector Plug-in

Item tree inspector

• Display QML source file if available [DONE]
  • synchronize scene selector with selecting element in source code text edit
• scene selector [DONE]
• scene model following visual parents [DONE]
  • highlight visible items [DONE]
  • mark out-of-view items?
  • type icons as in the widget model [PARTIAL]
• Animation debugger
  • slow down animations with QUnifiedTimer::instance()->setSlowModeEnabled() and setSlowdownFactor() [DONE]
  • Manually trigger animations
• visualize states and transitions (separate property tab with QSM-like visualization)

Live Preview

• selected item shows bounding box, implicit size, child area, baseline, margins, etc. [DONE]
• Anchor visualization
  • Selecting an item should also display a transparent rectangle overlay of all items it is anchored too
  • Use icons at anchors border to visualize anchor type
  • Visualize margins [DONE]
  • Specially mark items that have hardcoded x and y positions instead of using anchors
• item picking [DONE]
• mouse/key/touch event forwarding for remote control [DONE]

Scene graph inspector

• Synchronize selection with item tree [DONE]
• Geometry node:
  • show material shaders [DONE]
  • show attribute data [DONE]
    • allow to specify attribute semantics (color, coordinate, etc)
  • show material textures [DONE]
• Transform node:
  • display QMatrix4x4 [DONE]

Type support

• properties for QQuickWindow/View [DONE]
• properties for QQuickItem [DONE]

Integration

• in-target QQuickItem picking [DONE]

Other Tools

Model Browser

• target crashes when selecting a QQmlListModel [FIXED]

Timer Profiler

• support for QQmlTimer [DONE] and QUnifiedTimer

Unsorted ideas

• QQuick image cache debugging
  • show how much memory is used in total by the image cache
  • actually show which images are cached right now
• JS engine memory usage details
  • Show how often garbage collection has run, how long a GC run took, ...
  • Show how much memory the JS engine uses, and what the limit for triggering GC is etc
• focus debugging
  • show icons in tree view to see which items have activeFocus and which have focus set to true
  • maybe even key event debugging - record which items got the key event and which items accepted/ignored it
• QtQuick controls layouting - similar to what we have for widgets?
• visualize implicit sizes
  • warn about MouseAreas or Items with children that have size 0,0
• visualize layers, etc?