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If a DataNamePropertyWidget is created for a DataNameProperty whose
AccessInfo == READ, it doesn't instantiate a QLineEdit to display the
property's value (QComboBox is used instead).

Previously, the updateWidgetFromProperty method didn't check AccessInfo
to see what display widget was in use, and simply always dereferenced
the _lineEdit pointer. If AccessInfo == READ, it was null and the
application crashed.

Now updateWidgetFromProperty accesses only the combo box if
AccessInfo == READ, and uses the line edit otherwise.

Fixes #99

* work on Columbia module: simple mesh visualization

The main window's central widget has been changed to an MDI area. All
visualisation pipeline widgets are now displayed as subwindows in it.
This approach should help us to better utilise the space in the centre
of the main window.

git-svn-id: https://camplinux.in.tum.de/svn/campvis/branches/gui-redux@524 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@523 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@522 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

* added scene bounds getter to TrackballNavigationEventHandler

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@521 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/branches/gui-redux@520 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

The QtCanvas class didn't previously implement the sizeHint method. As
a result, Qt would allot it no display space if there were other widgets
competing for it (e.g. the main window's central widget).

Now QtCanvas has a sizeHint implementation that returns a size hint that
is in line with what the canvas' getSize method reports. Moreover,
QtCanvas now uses the `Expanding` size policy to inform Qt that it would
like to get as much display space as possible.

git-svn-id: https://camplinux.in.tum.de/svn/campvis/branches/gui-redux@519 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

A new class, LogHighlighter, has been added to the application.
Currently it's only responsible for highlighting those parts of log
messages that match the current filter. However, it can be easily
extended to also highlight timestamps, log levels, etc. All in all, this
should make the information the log viewer displays much easier to scan
through.

git-svn-id: https://camplinux.in.tum.de/svn/campvis/branches/gui-redux@518 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

Typing text into the log viewer's QLineEdit now causes all log
messages that don't contain that text to be filtered out. To
support this, message caching had to be moved to the log viewer.

git-svn-id: https://camplinux.in.tum.de/svn/campvis/branches/gui-redux@517 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

* Introducing DataNamePropertyWidget offering a combo box with all DataHandles in current DataContainer
* added slice rendering to Columbia1 pipeline

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@516 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

fixed possible crash during image representation conversion disk->GL

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@515 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@514 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@513 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/branches/gui-redux@512 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@511 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@510 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

LogViewerWidget now uses BufferingLog instead of QTextEditLog for
logging. This helps us test BufferingLog, and start integrating it into
the application.

git-svn-id: https://camplinux.in.tum.de/svn/campvis/branches/gui-redux@509 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

BufferingLog is a tgt::Log subclass that stores log messages in
a bounded deque, whose maximum size is specified when calling
BufferingLog's constructor. When it reaches its maximum capacity and is
asked to store additional messages, it discards old ones according to
the least recently used policy.

There will soon be a Qt model using BufferingLog as its data source.
It will provide log filtering and message formatting.

git-svn-id: https://camplinux.in.tum.de/svn/campvis/branches/gui-redux@508 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

There is now a new widget (LogViewerWidget) dedicated to displaying log
messages. It builds upon the previous ad-hoc design, adding controls for
clearing and filtering log messages. Clearing has been implemented
already, filtering on the other hand doesn't work yet.

git-svn-id: https://camplinux.in.tum.de/svn/campvis/branches/gui-redux@507 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

Rendering canvases, as well as the data container inspector, are now
displayed as tabbed docks in the top docking area. The two docks that
were previously located in the right docking area have been moved to the
left to make the layout more intuitive.

We don't use the main window's central widget, but Qt requires it to
exist. This causes certain sizing problems, e.g. docks located in the
top and bottom docking areas don't expand to take up all the vertical
space, which results in some empty space in the centre of the window.
This will hopefully be fixed soon.

git-svn-id: https://camplinux.in.tum.de/svn/campvis/branches/gui-redux@506 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

When created for the first time, the transfer
function editor is added to the main window and
docked in its right docking area.

git-svn-id: https://camplinux.in.tum.de/svn/campvis/branches/gui-redux@505 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

some minor fixes

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@504 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

logViewerDock is a new dock in the main window. Its main widget is
a QTextEdit to which log messages are appended by a QTextEditLog
instance.

git-svn-id: https://camplinux.in.tum.de/svn/campvis/branches/gui-redux@503 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

QTextEditLog is a tgt::Log subclass that is initialised with a QTextEdit
instance to which it then redirects all log messages it receives.

git-svn-id: https://camplinux.in.tum.de/svn/campvis/branches/gui-redux@502 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

The application is now single-window by default. The floating windows it
was composed of previously have all been docked in the main window.

Certain widgets (e.g. DataContainerInspectorWidget) may have to be
redesigned to better fit this new layout. Also, displaying multiple
rendering canvases at once is not supported yet.

git-svn-id: https://camplinux.in.tum.de/svn/campvis/branches/gui-redux@501 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/branches/gui-redux@500 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

* minor changes

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@499 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@498 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

* added slice marker rendering to SliceExtractor

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@497 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@496 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@495 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

* fixed transfer function shader
* let processor unlock call after execution be handled by seperate thread

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@494 bb408c1c-ae56-11e1-83d9-df6b3e0c105e