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qt-migration-legatus/qt5-before/dlbo/Lts/Tools/QLedMatrix/README
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torstenandCopilot 7173785915 Qt6 Migration: Complete migration with DDS/RTI support and build validation
Major Changes:
- Merged latest Qt5 devel content from dlbo (292 files changed, 7 new dirs)
- Consolidated forward-declarations and include folders
- Removed unneeded modules per Niklas' repo check list

Build System Fixes:
- Fixed CMake VERSION_GREATER syntax in ParticipantManagement/CMakeLists.txt
- Added VLC packages (libvlc-dev, vlc-plugin-base) to docker_build.sh
- Added PostgreSQL dev packages (libpq-dev, postgresql-server-dev-all) to Dockerfile
- Fixed locale warnings (ANSI_X3.4-1968 → C.UTF-8)
- Fixed ArcGIS SDK path warnings when BUILD_ARCGIS=OFF

Code Generation Fixes:
- Fixed IDL enum collisions (PortType→CorePortType/DdsutPortType, PdmEventType)
- Fixed Grantlee template svc_translation.cpp.grantlee:
  - Changed {{ idl_enum.name }}_def:: to {{ idl_enum.name }}::
  - Fixed .underlying() calls for C++11 scoped enums (enum class)
- Removed generated files from repo (moc_*, *_dtc.h, *_ftc.h)

Validation:
- BUILD_RTI=ON: SUCCESS
- BUILD_RTI=OFF: SUCCESS
- C++17 standard maintained for RTI 7.7 compatibility
- Ubuntu 26.04 Docker environment verified

Remaining Warnings (expected):
- BgViewer, KDChart, KDReports, Poppler-Qt6 not found (optional features)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-09-15 18:20:26 +00:00

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QLedMatrix Widget
-----------------
The QLedMatrix widget simulates a LED matrix (dot matrix) display.
A LED matrix display is a 2-dimensional array of dots used to generate
characters, symbols and images. It is often seen on machines, clocks and
display boards.
This generic implementation can configured for any size of rows (greater
than 0) and columns. The number of colors is not limited, therefore it
can be used to make a monochrome, bi-color or even a full RGB display.
Individual LEDs can be addressed in the matrix by their row and column
position. The index (0,0) is located in the upper left corner. Columns
grow from left to right, and rows grow from top to bottom.
Installation
------------
QLedMatrix library:
qmake
make
make install (or copy the plugin into "<Qt4 dir>/plugins/designer")
QLedMatrix example:
cd example
qmake
make
./qledmatrix_demo
Copyright
---------
Copyright (C) 2009 Pierre-Etienne Messier <pierre.etienne.messier@gmail.com>
http://pemessier.hexpresso.org/
This library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library. If not, see <http://www.gnu.org/licenses/>.