Imgui-IGS-Snippets

Imgui code exchanges for convenience at IGS

Tested on

• windows, mingw gcc 5.1.0 - cmake/ninja, imgui 1.49
• ubuntu, gcc 5.4 - cmake/ninja, imgui 1.50

FileIO Dialogue

• similar to the standard windows file-io
• additional recent file drop down
• additional subdirectory buttons (linux style)

• snippet example - save:

if( window_fileIO_visible )
{
  string save_file;
  if( fileIOWindow( save_file, window_recent_files, "Save", {"*.usr", "*.*"} ) )
  {
      window_fileIO_visible = false;
      if( !save_file.empty() )
      {
          window_recent_files.push_back( save_file );

          ofstream out_file;
          out_file.open( save_file, ios_base::trunc );          
          writeStuffToFile( out_file ); 
          out_file.close();
      }
  }
}  

• snippet example - open:

if( window_fileIO_visible )
{
  string open_file;
  if( fileIOWindow( open_file, window_recent_files, "Open", {"*.usr", "*.*"}, true  ) )
  {
      window_fileIO_visible = false;
      if( !open_file.empty() )
      {
          window_recent_files.push_back( open_file );
          readStuffFromFile( open_file );
      }
  }
}	

About Dialoge

• text
• close button
• animated IGS logo

• snippet example:

if( about_window_visible &&  
    aboutWindow( 
		ICON_FA_INFO_CIRCLE " About",
		"My fancy tools\n"
		"Abla bli blub ....\n",
		ImVec2( 400, 155 ),
		time ) )
		about_window_visible = false;

Frameclock Statistic Dialogue

• Overall Time
• Framecounter
• Frames per Second (current, min, avg, max)
• Frametime (current, min, avg, max)
• Frames per Second Plot over time
• Frametime histogram

• snippet example:

static FrameClock clock;

clock.beginFrame();

frameClockWindow(clock);

clock.endFrame();

Grid Layout Helper

• Setup next window size and position according to a grid layout
• Controlable grid divisions
• Setup by pair of top-left and bottom-right grid coordinates with 4-letter string encoded mode
  • e.g. "ltlt" -> cell nr. left, top, left, top
  • e.g. "blbr" -> cell nr. bottom, left, bottom, right

• snippet example:

GridLayout layout( 
	ImVec2( window_size.x, window_size.y ), // window size in pixels
	ImVec2( 10, 10 ),                       // grid divisions of 10 in x and y direction (default 10, 10)
	20 );                                   // height of a menu in pixel (default (20))

/* ... */

// call layout function before creating the next window
layout.placeNextWindow( ImVec2(0,0), ImVec2(2,2), "ltlb" );
ImGui::Begin("Control"); /* ... */ ImGui::End();
// meaning: 
//   - left-top corner of window at cell 0,0 
//     counted from left and top
//   - right-bottom corner of window at cell 2,2 
//     counted from left and bottom


layout.placeNextWindow( ImVec2(5,2), ImVec2(0,0), "lbrb" );
ImGui::Begin("Error"); /* ... */ ImGui::End();

layout.placeNextWindow( ImVec2(2,0), ImVec2(0,2), "ltrt" );
ImGui::Begin("MSSF-" ICON_FA_PICTURE_O ); /* ... */ ImGui::End();

layout.placeNextWindow( ImVec2(3,2), ImVec2(0,2),"rtrb" );
Begin( "MSSF-" ICON_FA_LINE_CHART  ); /* ... */ ImGui::End();

layout.placeNextWindow( ImVec2(0,2), ImVec2(5,0), "lblb" );
Begin("AutoIntegrationGraphs"); /* ... */ ImGui::End();