Can't type in the Imgui sample (Linux)

geokon · March 19, 2017, 1:39pm

Hi, new to Cinder.

I’m tyring to familiarize myself with Cinder-ImgUI. I’ve compiled and run the sample provided in the repo, but I’ve hit a bit of silly problem

github.com

simongeilfus/Cinder-ImGui/blob/master/samples/Basic/src/BasicApp.cpp

#include "cinder/app/App.h"
#include "cinder/app/RendererGl.h"
#include "cinder/gl/gl.h"

#include "CinderImGui.h"

using namespace ci;
using namespace ci::app;
using namespace std;

// Basic example class
struct Object {
	
	vec2 getPosition() const { return mPosition; }
	void setPosition( const ci::vec2& position ) { mPosition = position; }
	
	string	mName;
	Color	mColor;
	vec2	mPosition;
	float	mSize;

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(I didn’t quite get how to use the provided CMake files, so I just linked it myself - I think it’s unrelated)

Everything seems to work except for text input. I can navigate the windows, collapse tabs and windows and delete text. I can also copy and paste anything within the app (though unfortunately the clipboard isn’t shared with the rest of the system). But I can’t type anything. No numbers or letter or symbols

Running on Linux under Debian testing

Normally I’d try to debug this myself, but I don’t even know where to start
Any suggestions? Anyone have a similar problem?

Thanks!

ryanbartley · March 19, 2017, 1:56pm

The problem is right here…

github.com

simongeilfus/Cinder-ImGui/blob/323848c06c65dd94ac88f187d9610f4352788f72/src/CinderImGui.cpp#L838


	}
	
	
	vector<int> sAccelKeys;
	
	//! sets the right keyDown IO values in imgui
	void keyDown( ci::app::KeyEvent& event )
	{
		ImGuiIO& io = ImGui::GetIO();
		
		uint32_t character = event.getCharUtf32();
		
		io.KeysDown[event.getCode()] = true;
		
		if ( !event.isAccelDown() && character > 0 && character <= 255 ) {
			io.AddInputCharacter( ( char ) character );
		}
		else if( event.getCode() != KeyEvent::KEY_LMETA
			&& event.getCode() != KeyEvent::KEY_RMETA
			&& event.isAccelDown()
			&& find( sAccelKeys.begin(), sAccelKeys.end(), event.getCode() ) == sAccelKeys.end() ){

…Linux does not use 32-bit utf characters quite yet. The change is here…

https://github.com/ryanbartley/Cinder-ImGui/commit/a2528f0f44ed7cc567b3c7e5f19b41e0a42bc0ce

Also, if you need the cmake file, i use this…

github.com

ryanbartley/Cinder-ImGui/blob/PossibleChanges/proj/cmake/Cinder-ImGuiConfig.cmake

if( NOT TARGET Cinder-ImGui )
  get_filename_component( CINDER_IMGUI_BLOCK_PATH "${CMAKE_CURRENT_LIST_DIR}/../.." ABSOLUTE )
  get_filename_component( IMGUI_LIB_SOURCE_PATH "${CINDER_IMGUI_BLOCK_PATH}/lib/imgui" ABSOLUTE )
  get_filename_component( CINDER_IMGUI_INCLUDE_PATH "${CINDER_IMGUI_BLOCK_PATH}/include" ABSOLUTE )
  get_filename_component( CINDER_IMGUI_SRC_PATH "${CINDER_IMGUI_BLOCK_PATH}/src" ABSOLUTE )
  
  if( NOT EXISTS ${CINDER_PATH} )
    get_filename_component( CINDER_PATH "${CMAKE_CURRENT_LIST_DIR}/../../../.." ABSOLUTE )
  endif()

  add_library( Cinder-ImGui 
    ${CINDER_IMGUI_SRC_PATH}/CinderImGui.cpp 
    ${IMGUI_LIB_SOURCE_PATH}/imgui.cpp 
    ${IMGUI_LIB_SOURCE_PATH}/imgui_draw.cpp 
    ${IMGUI_LIB_SOURCE_PATH}/imgui_demo.cpp 
  )

  #target_compile_options( Cinder-ImGui PUBLIC "-std=c++11" )

  target_include_directories( Cinder-ImGui PUBLIC "${CINDER_IMGUI_INCLUDE_PATH}" )

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geokon · March 20, 2017, 9:30am

This is great
Thank you!

and good to see the block getting updated for CMake

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Can't type in the Imgui sample (Linux)

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