This is a simple paint program written in SDL:
- license
Copyright (c) Thomas Haschka 2019 This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.
Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:
The origin of this software must not be misrepresented; you must
not claim that you wrote the original software. If you use this
software in a product, an acknowledgment in the product
documentation would be appreciated but is not required.
Altered source versions must be plainly marked as such, and must
not be misrepresented as being the original software.
This notice may not be removed or altered from any source distribution.
- compilation: You need the sdl2 library and libpng, both in the dev versions installed on your system.
On a typical linux / unix system with gcc you may compile this with:
gcc -O2 `sdl2-config --libs` `sdl2-config --cflags` sdldraw.c -o sdldraw -lpng
In case the screen might stay black or you experiance other troubles you might compile the program to use software based rendering of the canvas:
gcc -O2 -DSOFTWARE_RENDERING `sdl2-config --libs` `sdl2-config --cflags` sdldraw.c -o sdldraw -lpng
- usage: You then may draw on a png image by calling:
./sdldraw your.png
hitting the save button might save your image overwriting the previous one.
Calling just:
./sdldraw will open a blank 640 by 480 canvas and save to paintout.png
Be warned if a previous paintout.png exists it might be overwritten!
For a different canvas you have to specify:
./sdldraw filename.png sizex sizey
This will open a canvas of sizex by sizey saving to filename.png if you hit
the safe button.
You may also change the collor palette, in order to do so you need create a palette file.
A palette file must consist of 16 lines containing 3 seperated integers between 0 and 255 to represent - red, green and blue - like:
0 0 0
255 255 255
124 124 124
...
note that you have to specify 16 colors otherwise the default palette will be loaded.
In order to use the custom palette file you have to call ./sdldraw with all
its arguments:
./sdldraw filename.png sizex sizey palettefile
- screenshot:
