8dcc / hl-png

Highlight PNG image

hl-png

Highlight PNG image.

Description

This simple program allows you to open a PNG image and draw/highlight any region.

Arguments and keybinds

The program expects an optional list of arguments, followed by a filename as its last argument. These are the supported arguments.

Argument	Description
-f	Launch the program in full-screen mode
-F	Launch the program in fixed mode (i.e. the window is not resizable). Might be useful for tiling window managers
-h	Show help and exit

From the program window, the following keybinds can be used.

Key	Description
LMouse	Draw in the window
Ctrl	If held, join lines together
c	Clear the drawing
g	Toggle the background grid
f, F11	Toggle full-screen

Building

You will need to install the SDL2 and libpng libraries.

# On debian-based distros
apt install libsdl2-dev libpng-dev

# On arch-based distros
pacman -S sdl2 libpng

Then, you can build the project.

git clone https://github.com/8dcc/hl-png
cd hl-png
make