381 lines
17 KiB
Plaintext
381 lines
17 KiB
Plaintext
NxWidgets-1.0
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=============
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The initial version of NxWidgets was released on March 22, 2012. This
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package has been used in several projects prior to its release to open
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source and is considered stable its initial release (although not all
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features have been fully verified).
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NxWidgets-1.1
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=============
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The 2nd release of the NxWidgets package was made on May 19, 2012. The
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headline new feature in this release is:
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* NxWM, the tiny window manager based on NX and NxWidgets. NxWM is true
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multiple window manager but only one window is displayed at a time.
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This simplification helps performance on LCD based products (in the
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same way that a tiled window manager helps) and also makes the best
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use of small displays. It is awkward from a human factors point-of-view
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trying to manage multiple windows on a small display.
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The window manager consists of a task bar with icons representing the
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running tasks. If you touch the task's icon, it comes to the top. Each
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window has a toolbar with (1) a title, (2) a minimize button, and (3) a
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stop application button using the standard icons for these things. User
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input via a touchscreen or mouse and keyboard is supported.
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There is always a start window that is available in the task bar. When
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you touch the start window icon, it brings up the start window containing
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icons representing all of the available applications. If you touch an
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icon in the start window, it will be started and added to the task bar.
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There is a base class that defines an add-on application and an
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interface that supports incorporation of new application. The only
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application that is provided is NxConsole. This is an NSH session
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running in a window. You should be able to select the NX icon in the start
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menu and create as many NSH sessions in windows as you want. (keybard input
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still comes through serial).
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This initial realease of NxWM should be considered an alpha release.
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All know issues are listed in the top-level TODO list.
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Other important new features include:
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* NxWidgets::IBitmap and NxWidgets::CRlePalettBitmap: Extended to
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support different color look-up-tables (LUTs). This allows images
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to be highlighted when touched, for example.
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* NxWidgets::CImage: Extended to support button-like behavior. CImage
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widgets now work well as touchable icons.
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* NxWidgets::CWidgetControl: Add a semaphore to force clients to wait if the
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size or position of the window is not yet known (multi-user mode only).
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Enabled and verified creation of framed windows.
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* NxWidgets::CWindowEventHandler and NxWidgets::CWindowEventHandler: Add
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support for getting callbacks for window events.
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* DOxygen documentation support. Contributed by Jose Pablo Carballo.
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An effort is underway to simplify NxWidgets and reduce its memory footprint:
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* NxWidgets::CNxWidget: Removed support for "shelving" widgets, reference
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constants, and close types. Remove all support for widgets in a "vertical"
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hierarchy. Now widgets exist in a flat, two-dimensional space and should
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not overlap. Removed built-in modal loops.
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Bug fixes include changes to the following (see the ChangeLog for details):
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* NxWidgets::CRlePalettBitmap, NxWidgets::CRlePalettBitmap,
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NxWidgets::CGraphicsPort, NxWidgets::CWidgetControl
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NxWidgets-1.2
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=============
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The 3rd release of the NxWidgets package was made on June 15, 2012. This
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release depends on NuttX-6.19 or above and should not be used with older
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NuttX releases.
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New features and enhancements include:
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* NxWM::CNxConsole: The NxWM NxConsole windows now correctly receive keyboard
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input. In version 1.1, NxConsoles received input from /dev/console. That,
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of course, leads to chaos when there a multiple windows trying to get input
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from the same device. There is now a keyboard listener task that will
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accept input from /dev/console and inject that input into the NX keyboard
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interface. NX will give the keyboard input only to the top window that
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has focus, eliminating the chaos.
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* NxWM::CHexcalculator: The NxWM demonstration/unit test now includes a hex
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calculator applications. This demonstrates the use of arrays of buttons
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within a window.
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Bugfixes:
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* NxWM::CTaskbar: Was inappropriately minimizing some windows. Fixes
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some window raising/lowering bugs.
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* NXWidgets::CButtonArray: Fix some coloring problems when rending button
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text in cases where we cannot read from the display device.
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As well as other, less critical bugs (see the ChangeLog for details)
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NxWidgets-1.3
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=============
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The 4th release of the NxWidgets package was made on September 29, 2012. This
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release depends on NuttX-6.22 or above and should not be used with older
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NuttX releases.
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There are no functional changes in this release of NxWidgets. This release
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is required in order to retain compatibility with the most recent versions
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of NuttX. These comptibility changes include:
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* Naming of function entry points
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* Build system changes
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* Changes needed for the NuttX configuration tool
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NxWidgets-1.4
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=============
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The 5th release of the NxWidgets package was made on December 20, 2012. This
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release depends on NuttX-6.24 or above and should not be used with older
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NuttX releases. This release corresponds to SVN revision r5447.
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Note: Nearly all changes between 1.3 and 1.4 were the result of the efforts
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of Petteri Aimonen.
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Additional new features and extended functionality in Version 1.4:
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* NxWdigets::CNxServer: Reduce start-up delay
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* NxWM::CApplicationWindow: Option to eliminate minimize button.
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* NxWM::CTaskbar: Option to eliminte the background image; highlight current
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icon in the task bar.
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* NxWidgets::CNumericEdit: New widget. Basically a CLabel with +/- buttons.
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* NxWidgets::CNxTimer: Replace the original signal-based solution with a
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work queue-based solution. This raises some isses about using the
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internal work queues from user space.
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* Build System: Misc improvements.
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* Tools: bitmap_converter.py will convert images to NxWidgets RLE-encoded format.
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Bugfixes (see the change log for details). Some of these are very important
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(marked *critical*):
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* NxWidgets::CCallback: Misplaced #endif
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* NxWM::CCalculator and NxWM::CStartWindow: Add forward declaration for icon images.
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* glych_cycle: Correct width, destructor needs to be public.
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* NxWidgets:CText and NxWidgets:CNumericEdite: Fix some memory freeing bugs
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* NxWidgets::CScrollingPanel: It is borderless for now because there was no
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easy way to redraw only the required part of the border.
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NxWidgets-1.5
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=============
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The 6th release of the NxWidgets package was made on February 1, 2013. This
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release depends on NuttX-6.25 or above and should not be used with older
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NuttX releases. This release corresponds to SVN revision r5595.
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Note: Nearly all of the changes between 1.4 and 1.5 were the result of the
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efforts of Petteri Aimonen.
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Additional new features and extended functionality in Version 1.5:
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* CNxWidgets::CTabPanel: A new widget contributed by Petteri Aimonen.
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This widget provides a tab panel, which has a button bar at the top
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and panels below it. Pressing a button will select the corresponding
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panel.
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* NxWidgets::CGraphicsPort: Many times we only want a constant background.
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In that case the old code filled the background, read it back, rendered
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the text and then wrote it back. When used with an LCD this causes
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some screen flicker. Added a variant of drawText that takes background
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color, so that the background and text can both be rendered at one go.
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* NxWM::CScrollingPanel::scrollChildren(): Avoid unnecessary redraws in
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CScrollingPanel
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* Kconfig: Added several "enabling" settings that must be selected to
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override the default setting.
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* UnitTests: Changes for compatibility with NuttX-6.25
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Bugfixes:
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* NxWidgets::CGraphicsPort::move(): Fix typo bug in bounding rectangle
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calculation.
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* NxWM::CCycleButton: Remove the separator from CCycleButton. It draws in
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wrong place, and doesn't look very good in the correct place either.
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* NxWidgets::CLabel: The label was drawn as a single rectangular region,
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then a text was added to the on top of this. The result is that the
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text would flicker when the CLabel was updated. With this change, the
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two step update is replaced with a five step update: The background
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is updated as four rectangulear regions (leaving the previous text in
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place), then the new text is updated. This eliminates the flicker.
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* CGraphicsPort::_drawText: Renamed from CGraphicsPort::drawText in order
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to eliminate some naming collisions when overloaded in some configurations
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(i.e., when both bool and nx_pixel_t are uint8_t).
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NxWidgets-1.6
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=============
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The 7th release of the NxWidgets package was made on March 15, 2013. This
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release depends on NuttX-6.26 or above and should not be used with older
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NuttX releases. This release corresponds to SVN revision r5745.
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Note: All of the changes between 1.5 and 1.6 were the result of the
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efforts of Petteri Aimonen.
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Additional new features and extended functionality in Version 1.6:
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* NXWidgets::CNxWidget: Add an inline function to get the current style.
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* NXWidgets::CCycleButton: Make CCycleButton change state in onPreRelease().
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This way the new value is already available when a listener gets the
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action event.
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* NxWidgets::CImage: Two enhancements:
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1) Allow changing the bitmap even after the control has been created.
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2) Allow giving 'null' to have the control draw no image at all.
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* NxWM::CTaskBar: Make a some methods of CTaskbar virtual to allow
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customizations.
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* NxWM::CTaskBar: Allow windows with null icon. This makes sense for e.g.
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full screen windows.
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* NxWM::CApplicationWindow: Add config options to override NxWM
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stop/minimize icons.
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* NwWM::CStartWindow, NxWM::CWindowMessenger: Get rid of the start window
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thread. Instead, handle all events through the USRWORK work queue.
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For me, this was necessary because I would open some files in button
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handlers and close them in NxTimer handlers. If these belonged to
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different tasks, the close operation would fail. Further benefits:
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+ Gets rid of one task and message queue.
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+ Reduces the amount of code required
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+ Decouples CStartWindow from everything else - now it is just a window
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with application icons, not an integral part of the event logic.
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+ All events come from the same thread, which reduces the possibility of
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multithreading errors in user code.
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+ The user code can also send events to USRWORK, so that everything gets
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serialized nicely without having to use so many mutexes.
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Drawbacks:
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- Currently the work state structure is malloc()ed, causing one allocation
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and free per each input event. Could add a memory pool for these later, but
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the speed difference doesn't seem noticeable.
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- The work queue will add ~50 ms latency to input events. This is however
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configurable, and the delay is anyway short enough that it is unnoticeable.
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Bugfixes:
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* NxWidgets::CWidgetControl: Added another semaphore, boundssem, which
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is set as soon as the screen bounds are known. This corrects two
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problems:
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1) Due to the way nxgl_rectsize computes the size, it will never
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be 0,0 like CWidgetControl expects. Therefore the size is considered
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valid even though it has not been set yet.
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2) After the check is fixed to test for > 1, NxWM window creation will
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hang. This is due to the fact that it uses the screen bounds for
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determining window size. This was being blocked on geosem, which
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is only posted after the size has been set.
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* NxWidgets::CNxTimer: Previously repeated timers were re-enabled after
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the timer action event. Consequently, if the action event handler tried
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to stop the timer, the request would be ignored. Changes the order
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so that the timer is re-enabled before the callback. There is still
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no risk of re-entrancy, because everything executes on the USRWORK work
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queue.
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* NxWidgets::CLabel: Fix backward conditional compilation in the "flicker
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free" logic.
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* NxWidgets::CMultiLineTestBox: Fix text placement error. From Petteri
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Aimonen.
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* NxWidgets/tools/bitmap_converter.py: Fix bitmap_converter.py so that
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it works with indexed input images.
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NxWidgets-1.7
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=============
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The 8th release of the NxWidgets package was made on April 28, 2013. This
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release depends on NuttX-6.26 or above and should not be used with older
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NuttX releases.
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Note: All of the changes between 1.6 and 1.7 were the result of the
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efforts of Petteri Aimonen.
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Additional new features and extended functionality in Version 1.7:
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* NxWidgets::CGlyphButton: Generate action event, like CButton does.
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* NxWM::CTaskBar: Add option CONFIG_NXWM_TASKBAR_NO_BORDER to suppress
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drawing of the border on the taskbar.
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* NxWidgets::CNxTimer: Add function to check if CNxTimer is running.
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* NxWidgets::CNxWidgets: Allow overriding of the checkCollision() method.
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Bugfixes:
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* NxWidgets bitmap_converter.py: Fix bug when image width > 255
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* NxWM::CScrollbarPanel: Fix spelling error in class name: CScollbarPanel
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should be CScrollbarPanel
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* NxWidgets::CGlyphButton: Prevent drawing outside of the bitmap size.
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NxWidgets-1.8
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=============
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The 9th release of the NxWidgets package was made on June 14, 2013. This
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release depends on NuttX-6.26 or above and should not be used with older
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NuttX releases.
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Note: Most of the changes between 1.7 and 1.8 were the result of the
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efforts of Ken Pettit and Petteri Aimonen.
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Additional new features and extended functionality in Version 1.8:
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* NxWM::CMediaPlayer: Shell application for an MP3 Media Player (from Ken
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Pettit).
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* NxWidgets::CGlyphSliderHorizontal and NxWidgets::CGlyphSliderHorizontalGrip:
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New widgets added by Ken Pettit. Includes a Unit Test.
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* NxWidgets::CImage: Allow a NULL pointer for a bitmap (from Petteri
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Aimonen).
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* NxWidgets::CNumericEdit: Delay before auto-incrementing now varies: A
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longer delay is required to start auto-incrementing and speed increases
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while pressed (from Petteri Aimonen).
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* NxWM::CTaskbar: Add a method to redraw the taskbar and the current
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application. This should only be necessary if the display loses state due
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to e.g. powerdown or other manual intervention (from Petteri Aimonen).
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Bugfixes:
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* NxWM::CCalibration: Fix a race condition that would cause the calibration
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screen to fail to come up when its icon was touched (from Ken Pettit).
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* Default priorities for NxWidget and NxWM threads should be 100, not 50, to
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be consistent with other default priorities.
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* NxWidgets::CGlyphSliderHorizontal: Fix a drawing error (from Ken Pettit).
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* Update the way that NSH the Unit Tests are registered as built-in NSH
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applications.
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NxWidgets-1.9
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=============
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The 10th release of the NxWidgets package was made on October 28, 2013. This
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release depends on NuttX-6.26 or above and should not be used with older
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NuttX releases.
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Additional new features and extended functionality in Version 1.9:
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* NxWM::CCalibration.cxx/hxx: If CONFIG_NXWM_CALIBRATION_MESSAGES is
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defined then CCalibration will provide some instructions in the center
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of the display.
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* NxWM::CCalibration.cxx/hxx: Add options to collect and average
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multiple samples at each location. Also logic to discard the most
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extreme samples before averaging.
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* NxWidgets::CScaledImage: This new class is a wrapper for an class
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the exports IBitMap. It will perform scaling via bi-linear interpolation
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so that images can be scaled to any size desired.
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* NxWM::CTaskbar:: Can now be configured to scale taskbar icons using
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NxWidgets::CScaledImage.
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* NxWidgets/libnxwidgets/src/glyph_nxlogo320x320.cxx: Add a big, 320x320
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NuttX logo image. The older, smaller NuttX logo was renamed from
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nxlogo to nxlogo160x160 in all places.
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* NxWM::CCalibration and NxWM::CTouchscreen: Add a complex touchscreen
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scaling algorithm to handling the case where the measured X values also
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vary with y position (and vice versa).
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Bugfixes:
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(There are no bugfixes recorded for this release).
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NxWidgets-1.10
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==============
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The 11th release of the NxWidgets package was made on December 7, 2013. This
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release depends on NuttX-6.26 or above and should not be used with older
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NuttX releases.
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Additional new features and extended functionality in Version 1.10:
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* NxWM:Calibration and UnitTests/nxwm: Add logic to enable saving and
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recovering touchscreen calibration data. This depends upon having
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platform-dependent support for storage of configuration data. Portions
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suggested by Ken Pettit.
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NxWidgets-1.11
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==============
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The 12th release of the NxWidgets package was made on January 20, 2014. This
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release depends on NuttX-6.33 or above and should not be used with older
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NuttX releases.
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Additional new features and extended functionality in Version 1.11:
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* Primarily changes associated with the NuttX kernel build where the
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graphics application lies in user space and the graphics server lies in
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protected kernel space. This change is mostly a matter of repartitioning
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functionality and should not cause in any functional differences.
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