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Game GUI is a skin-able GL based Widget Class for Games

Home Page: http://voxels.blogspot.de/2015/07/opengl-game-gui-widgets-with-source.html

License: MIT License

C 70.15% C++ 25.55% Makefile 0.06% Objective-C 4.24%

game-gui's Introduction

Game GUI - A Simple GUI with skin-support for OpenGL Games

License : MIT

http://opensource.org/licenses/MIT

Summary

After trying several gui's more or less suited for games (LibRocket, Qt, NVWidgets, CEgui, etc), I found that none of them was really light weight, easy to use and fully skinable at the same time. This was the reason I started to write my own GUI / C++. The project was completed in about one month.

Features

Advanced skin scaling: define how the inner and borders of a texture shall be scaled ( simple scale, repeating inner pattern or constant outer frame )
UTF8 Support
TTF Support
Easy skinning support
Alpha support (RGBA), so you can have transparent windows/widgets etc
direct access to all controls and their members
Non-blocking visualization
Callback support
No need to mess with inheritance and virtual functions
Different from most GUIs, Widgets and windows are stored completely inside the GUI, so no need to define any window or widget variables in your code.
Directory: Controls are stored and accessed by a tree structure that is rendered every time like a scene graph
No event loop, show function or update function
No need to have a timer that calls an update function
Lightweight: Only Depends on GL and libFreetype and DevIL
Can easily be used in SDL, Qt and other environments. Just plug in the keyboard and mouse events and call the gui's draw function from your main render loop.
Config file support for default variables (font,padding etc) and skin textures+scaling parameters
Only 2000 lines of code for the entire Gui class including all widgets. Therefore easy to modify and extend.
Comes with a simple file-browser (See screenshot1)
MIT license
Multi-screen support (same as multiple Desktops). You can have a title screen, loading screen, ingame screen etc. Simply create them at the beginning and the switch between by setting gui.active_screen=number;
Window manager
Context menu
Custom mouse pointer
Widget Classes : Window, Menu, Label, Button, CheckBox, Tab, Combo, Textedit, Radio
Controls have support for custom user variables like control.var.string["myvar"]="hello"

Most important is the access by the directory structure and using simple assigns '=' to create a new instance of a widget or window.

The usage is basically as follows:

Create (and instantly show) a window:

gui.window["id1"]=Gui::Window("Title",100,100,250,350);

Adding a button :

gui.window["id1"].button["load"] = Gui::Button("Load",20,20,50,30);

Adding a simple callback

gui.window["id1"].button["load"].callback_pressed=
    [](Gui::Window *window,Gui::Button* control,int index)
    {
        window->close();
    };

Setting a custom skin:

gui.window["id1"].button["load"].skin=Skin("normal.png","hover.png","pressed.png");

Also you have direct access to a skin's texture to use it as output of a FBO e.g. The 3D viewer of the screenshot below uses that.

gui.window["id1"].button["load"].skin.texture_normal=fbo.texture_id;

Duplicating a window is easy: The duplicate is instantaneously visible (works also for controls)

gui.window["id2"] = gui.window["id1"]

The GUI is not fully optimized, yet you have like 700 fps with 20 simple windows on the screen on a notebook PC. Controls are stored in a std vector as share ptr. For rendering, it is not necessary to evaluate the string keys.

Mathlib included from http://sourceforge.net/projects/nebuladevice/

game-gui's People

Contributors

Stargazers

Watchers

game-gui's Issues

Installing the Program.

how to install the program?

relocation R_X86_64_32S against `.rodata' can not be used when making a PIE object

Hi. i'm on void linux and try to compile your SDL_gui/tests/0100_GUI_App sample via cmake. first create makefiles via: cmake ., and then make:

╰ make
Scanning dependencies of target app
[  2%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/tests/0100_GUI_App/src/main.cpp.o
[  5%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_ttf_HarfBuzz/SDL_ttf.cpp.o
[  8%] Building C object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gfx/SDL2_gfxPrimitives.c.o
[ 11%] Building C object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gfx/SDL2_rotozoom.c.o
[ 14%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/SDL_gui.cpp.o
[ 17%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_Utils.cpp.o
[ 20%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_shapes.cpp.o
[ 23%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_View.cpp.o
[ 26%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_ImageView.cpp.o
[ 29%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_image.cpp.o
[ 32%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_TextView.cpp.o
[ 35%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_Fonts.cpp.o
[ 38%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_IconView.cpp.o
[ 41%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_Label.cpp.o
[ 44%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_Button.cpp.o
[ 47%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_CheckBox.cpp.o
[ 50%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_RadioButton.cpp.o
[ 52%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_RadioButtonGroup.cpp.o
[ 55%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_List.cpp.o
[ 58%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_ScrollView.cpp.o
[ 61%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_EditText.cpp.o
[ 64%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_TextUtil.cpp.o
[ 67%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_App.cpp.o
[ 70%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_TopBar.cpp.o
[ 73%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_StatusBar.cpp.o
[ 76%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_Menu.cpp.o
[ 79%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_MenuBar.cpp.o
[ 82%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_PopupView.cpp.o
[ 85%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_MessageBox.cpp.o
[ 88%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_Switch.cpp.o
[ 91%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_ComboBox.cpp.o
[ 94%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_Slider.cpp.o
[ 97%] Building CXX object CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gui/GUI_Config.cpp.o
[100%] Linking CXX executable app
/bin/ld: CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gfx/SDL2_gfxPrimitives.c.o: relocation R_X86_64_32S against `.rodata' can not be used when making a PIE object; recompile with -fPIC
/bin/ld: CMakeFiles/app.dir/home/linarcx/Temp/SDL_gui/SDL2_gfx/SDL2_rotozoom.c.o: relocation R_X86_64_32S against `.rodata' can not be used when making a PIE object; recompile with -fPIC
/bin/ld: final link failed: nonrepresentable section on output
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/app.dir/build.make:569: app] Error 1
make[1]: *** [CMakeFiles/Makefile2:76: CMakeFiles/app.dir/all] Error 2
make: *** [Makefile:84: all] Error 2

Current Status

What's the status of the framework? Is there a plan to keep working on it?

I spent quite a bit of time to get it working on Windows 10 and I can report the following:

You need Visual Studio 2012 Express Edition to compile the code.
Visual C++ Redistributable 2012 needs to be installed (all those missing DLL files); VS 2013 redistributable might be necessary as well.
It does not work on Hyper-V VM with windows 10 installed. I don't think it is an issue, because it uses video card and Hyper-V might not expose one. (I did not want to mess with RemoteFX)
On VS 2017 community edition it compiles source files, but it does NOT link. I think it has to deal with lib files included and built against an older VS version. Newer version does not have some internal objects.

How does it compare to https://blogs.gnome.org/clutter/ ? If one was to add widgets to cluter, what would be the difference? I am mostly interested to compare ease of use from a "business" level application perspective, not a game.

I think all in all it is a very nice library. Very easy to follow even if I my OpenGL background is very weak.

Thanks

Problem with extend_rect

Hello - I have a problem with a code of extend_rect method, I think: it causes second and third Radio to be drawn very large. I have changed the code as below:
void extend_rect(Rect &r)
{
r.sx = std::max(r.sx, /_x + */sx);
r.sy = std::max(r.sy, /_y + */sy);
}
and it is now ok, but I wondering how does it worked before?

Regards
Pawel

sp4cerat / game-gui Goto Github PK

game-gui's Introduction

Game GUI - A Simple GUI with skin-support for OpenGL Games

License : MIT

http://opensource.org/licenses/MIT

game-gui's People

Contributors

Stargazers

Watchers

Forkers

game-gui's Issues

Installing the Program.

relocation R_X86_64_32S against `.rodata' can not be used when making a PIE object

Current Status

Problem with extend_rect

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