A simple Qt widget to view all images that QImage supports.
There are two files you can copy to your project:
- QImageViewer.h
- QImageviewer.cpp
The widget supports:
- Loading the image from a file
- Loading the image from memory
- Scrollbars if the image is larger than the widget
- A slot to scale
- A slot to zoom in
- A slot to zoom out
- A slot to reset zoom and scale.
- A slot to invoke print dialog.
To build the test program "lena", run these steps:
% cd QImageViewer/src/build
% cmake ..
% make
[ 20%] Automatic MOC and UIC for target lena
[ 20%] Built target lena_autogen
[ 40%] Building CXX object CMakeFiles/lena.dir/lena_autogen/mocs_compilation.cpp.o
[ 60%] Building CXX object CMakeFiles/lena.dir/lena.cpp.o
[ 80%] Building CXX object CMakeFiles/lena.dir/QImageViewer.cpp.o
[100%] Linking CXX executable lena
[100%] Built target lena
That will leave a program called "lena".
$ ls -l lena
-rwxr-xr-x 1 erniep users 1159560 Oct 23 16:38 lena
Give it one argument, the path to some image. It should auto-detect the image format and will display it.
$ ./lena
usage: ./lena /path/to/image
$ ./lena ../../images/lena.png
