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SGFX is a lightweight embedded library for displays and touchscreens providing everything required to build a fully featured embedded GUI.

License: MIT License

C 89.11% CMake 4.19% Objective-C 6.64% Shell 0.06%

lightweight-embedded-library graphic-library graphical-interface framebuffer embedded-systems c touchscreen lua lua-binding framebuffers

sgfx's Introduction

SGFX

What is SGFX?

SGFX is a lightweight embedded library for displays and touchscreens providing everything required to build a fully featured embedded GUI. The SGFX library has been designed to be the smallest, fastest and most advanced embedded library for display and touchscreen solutions. For more information, access the official website.

Goals of SGFX

Small memory Footprint;
Maximize utilities of hardware acceleration;
Support of advanced graphics operations such as multiple alpha blending modes;
No kernel modifications;
Lightweight, OpenSource, Portable and Modular;
Lua support (experimental)

Supported compilers

GCC
Clang

Supported architectures

Tested platforms

If you have a suggestion or want contribuite with a new portings, create an issue 😉

Installation

SGFX requires CMake and Ninja to compile. Follow the instructions:

$ cd sgfx
$ mkdir build
$ cmake CMakeLists.txt -Bbuild -GNinja
$ cmake --build build

In case of cross compilation:

$ cd sgfx
$ mkdir build
$ cmake CMakeLists.txt -Bbuild -GNinja -DCMAKE_TOOLCHAIN_FILE=toolchains/<toolchain_file>.cmake
$ cmake --build build

Running examples

First, you must configure framebuffer filedescriptor used by target archtecture. Default value used is /dev/fb0, however you can change it creating a .sgfxconfig:

FDFB=/dev/fb

After that run examples (remember to run as a superuser):

cd build
./examples/<example>

Examples	Definition
helloworld	Hello World Example
drawprimitives	Primitives (rect, line...)
drawimages	PNG, BMP and TIF
drawtext	Draw simple text
eventexample	Touch event example

License

SGFX may be modified and distributed under the terms of the MIT license. See the LICENSE file for details.

sgfx's People

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pixellots coreychen922 k1132 zhyh329 guitarhua mfkiwl stahta01

Descrição:

Tentei compilar mas recebo alguns erros na função strncopy strncpy(m_bfcs->fdfb, FB, strlen(FB));. Uma busca rápida no Google vi que algumas pessoas mudaram o strncpy por memcpy. Quando faço isso outro erro acontece mas em uma função do ibutterfree_surface.c error: argument 1 null where non-null expected [-Werror=nonnull].
TL;DR: strncopy e memcpy retornam erros inesperados.

Arquitetura:

SO: Linux 5.5.13-1-MANJARO #1 SMP PREEMPT Wed Mar 25 17:14:28 UTC 2020 x86_64 GNU/Linux | ArchLinux
Processador: i3
Memória: 12GB

Erro:

strncpy(m_bfcs->fdfb, FB, strlen(FB));

Scanning dependencies of target ibutterfree
[  4%] Building C object src/CMakeFiles/ibutterfree.dir/utils/ibutterfree_config.c.o
/home/diegocatalao/Desktop/workspace/ibutterfree/src/utils/ibutterfree_config.c: In function ‘ibutterfree_config_read’:
/home/diegocatalao/Desktop/workspace/ibutterfree/src/utils/ibutterfree_config.c:11:3: error: ‘strncpy’ output truncated before terminating nul copying 8 bytes from a string of the same length [-Werror=stringop-truncation]
   11 |   strncpy(m_bfcs->fdfb, FB, strlen(FB));
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/diegocatalao/Desktop/workspace/ibutterfree/src/utils/ibutterfree_config.c:12:3: error: ‘strncpy’ output truncated before terminating nul copying 17 bytes from a string of the same length [-Werror=stringop-truncation]
   12 |   strncpy(m_bfcs->fdev, INPUT, strlen(INPUT));
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/diegocatalao/Desktop/workspace/ibutterfree/src/utils/ibutterfree_config.c:30:6: error: ‘strncpy’ specified bound depends on the length of the source argument [-Werror=stringop-overflow=]
   30 |      strncpy(m_bfcs->fdev, buff + 5, strlen(buff + 5) - 1);
      |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/diegocatalao/Desktop/workspace/ibutterfree/src/utils/ibutterfree_config.c:30:38: note: length computed here
   30 |      strncpy(m_bfcs->fdev, buff + 5, strlen(buff + 5) - 1);
      |                                      ^~~~~~~~~~~~~~~~
/home/diegocatalao/Desktop/workspace/ibutterfree/src/utils/ibutterfree_config.c:24:6: error: ‘strncpy’ specified bound depends on the length of the source argument [-Werror=stringop-overflow=]
   24 |      strncpy(m_bfcs->fdfb, buff + 5, strlen(buff + 5) - 1);
      |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/diegocatalao/Desktop/workspace/ibutterfree/src/utils/ibutterfree_config.c:24:38: note: length computed here
   24 |      strncpy(m_bfcs->fdfb, buff + 5, strlen(buff + 5) - 1);
      |                                      ^~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[2]: *** [src/CMakeFiles/ibutterfree.dir/build.make:96: src/CMakeFiles/ibutterfree.dir/utils/ibutterfree_config.c.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:147: src/CMakeFiles/ibutterfree.dir/all] Error 2
make: *** [Makefile:104: all] Error 2

error: argument 1 null where non-null expected [-Werror=nonnull]

[  4%] Building C object src/CMakeFiles/ibutterfree.dir/utils/ibutterfree_config.c.o
[  8%] Building C object src/CMakeFiles/ibutterfree.dir/core/ibutterfree_surface.c.o
/home/diegocatalao/Desktop/workspace/ibutterfree/src/core/ibutterfree_surface.c: In function ‘ibutterfree_surface_set_description’:
/home/diegocatalao/Desktop/workspace/ibutterfree/src/core/ibutterfree_surface.c:111:3: error: argument 1 null where non-null expected [-Werror=nonnull]
  111 |   memcpy(surface->desc, desc, sizeof(IButterFreeSurfaceDescription));
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /home/diegocatalao/Desktop/workspace/ibutterfree/includes/core/ibutterfree.h:30,
                 from /home/diegocatalao/Desktop/workspace/ibutterfree/includes/core/ibutterfree_surface.h:25,
                 from /home/diegocatalao/Desktop/workspace/ibutterfree/src/core/ibutterfree_surface.c:1:
/usr/include/string.h:43:14: note: in a call to function ‘memcpy’ declared here
   43 | extern void *memcpy (void *__restrict __dest, const void *__restrict __src,
      |              ^~~~~~
cc1: all warnings being treated as errors
make[2]: *** [src/CMakeFiles/ibutterfree.dir/build.make:135: src/CMakeFiles/ibutterfree.dir/core/ibutterfree_surface.c.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:147: src/CMakeFiles/ibutterfree.dir/all] Error 2
make: *** [Makefile:104: all] Error 2