ImGuiFileDialog

An example of the File Dialog integrated within the ImGui Demo App

Separate system for call and display
Can use custom pane via function binding
- this pane can block the validation of the dialog
- can also display different things according to current filter and User Datas
Support of Filter Custom Coloring / Icons / text
Multi Selection (ctrl/shift + click) :
- 0 => infinite
- 1 => one file (default)
- n => n files
Compatible with MacOs, Linux, Win
- On Win version you can list Drives
Support of Modal/Standard dialog type
Support both Mode : File Chooser or Directory Chooser

Use the Namespace igfd (for avoid conflict with variables, struct and class names)

Simple Dialog :

void drawGui()
{ 
  // open Dialog Simple
  if (ImGui::Button("Open File Dialog"))
    igfd::ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose File", ".cpp\0.h\0.hpp\0\0", ".");

  // display
  if (igfd::ImGuiFileDialog::Instance()->FileDialog("ChooseFileDlgKey")) 
  {
    // action if OK
    if (igfd::ImGuiFileDialog::Instance()->IsOk == true)
    {
      std::string filePathName = igfd::ImGuiFileDialog::Instance()->GetFilepathName();
      std::string filePath = igfd::ImGuiFileDialog::Instance()->GetCurrentPath();
      // action
    }
    // close
    igfd::ImGuiFileDialog::Instance()->CloseDialog("ChooseFileDlgKey");
  }
}

Directory Chooser :

For have only a directory chooser, you just need to specify a filter null :

igfd::ImGuiFileDialog::Instance()->OpenDialog("ChooseDirDlgKey", "Choose a Directory", 0, ".");

In this mode you can select any directory with one click, and open directory with double click

Dialog with Custom Pane :

static bool canValidateDialog = false;
inline void InfosPane(std::string vFilter, igfd::UserDatas vUserDatas, bool *vCantContinue) // if vCantContinue is false, the user cant validate the dialog
{
	ImGui::TextColored(ImVec4(0, 1, 1, 1), "Infos Pane");
	ImGui::Text("Selected Filter : %s", vFilter.c_str());
	if (vUserDatas)
		ImGui::Text("UserDatas : %s", vUserDatas);
	ImGui::Checkbox("if not checked you cant validate the dialog", &canValidateDialog);
	if (vCantContinue)
	    *vCantContinue = canValidateDialog;
}

void drawGui()
{
  // open Dialog with Pane
  if (ImGui::Button("Open File Dialog with a custom pane"))
    igfd::ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose File", ".cpp\0.h\0.hpp\0\0",
            ".", "", std::bind(&InfosPane, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3), 350, 1, igfd::UserDatas("InfosPane"));

  // display and action if ok
  if (igfd::ImGuiFileDialog::Instance()->FileDialog("ChooseFileDlgKey")) 
  {
    if (igfd::ImGuiFileDialog::Instance()->IsOk == true)
    {
		std::string filePathName = igfd::ImGuiFileDialog::Instance()->GetFilepathName();
		std::string filePath = igfd::ImGuiFileDialog::Instance()->GetCurrentPath();
		std::string filter = igfd::ImGuiFileDialog::Instance()->GetCurrentFilter();
		// here convert from string because a string was passed as a userDatas, but it can be what you want
		std::string userDatas;
		if (igfd::ImGuiFileDialog::Instance()->GetUserDatas())
			userDatas = std::string((const char*)igfd::ImGuiFileDialog::Instance()->GetUserDatas()); 
		auto selection = igfd::ImGuiFileDialog::Instance()->GetSelection(); // multiselection

		// action
    }
    // close
    igfd::ImGuiFileDialog::Instance()->CloseDialog("ChooseFileDlgKey");
  }
}

Filter Infos

You can define color for a filter type

igfd::ImGuiFileDialog::Instance()->SetFilterInfos(".cpp", ImVec4(1,1,0, 0.9));
igfd::ImGuiFileDialog::Instance()->SetFilterInfos(".h", ImVec4(0,1,0, 0.9));
igfd::ImGuiFileDialog::Instance()->SetFilterInfos(".hpp", ImVec4(0,0,1, 0.9));
igfd::ImGuiFileDialog::Instance()->SetFilterInfos(".md", ImVec4(1,0,1, 0.9));

and also specific icons (with icon font files) or file type names :

// add an icon for png files 
igfd::ImGuiFileDialog::Instance()->SetFilterInfos(".png", ImVec4(0,1,1,0.9), ICON_IMFDLG_FILE_TYPE_PIC);
// add a text for gif files (the default value is [File] 
igfd::ImGuiFileDialog::Instance()->SetFilterInfos(".gif", ImVec4(0, 1, 0.5, 0.9), "[GIF]");

Multi Selection

You can define in OpenDialog/OpenModal call the count file you wan to select :

0 => infinite
1 => one file only (default)
n => n files only

See the define at the end of these funcs after path.

igfd::ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose File", ".*\0.cpp\0.h\0.hpp\0\0", ".");
igfd::ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose 1 File", ".*\0.cpp\0.h\0.hpp\0\0", ".", 1);
igfd::ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose 5 File", ".*\0.cpp\0.h\0.hpp\0\0", ".", 5);
igfd::ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose many File", ".*\0.cpp\0.h\0.hpp\0\0", ".", 0);
igfd::ImGuiFileDialog::Instance()->OpenDialog("ChooseFileDlgKey", "Choose File", ".png\0.jpg\0\0",
   ".", "", std::bind(&InfosPane, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3), 350, 1, "SaveFile"); // 1 file

File Dialog Constraints

you can define min/max size of the dialog when you display It

by ex :

MaxSize is the full display size
MinSize in the half display size.

ImVec2 maxSize = ImVec2((float)display_w, (float)display_h);
ImVec2 minSize = maxSize * 0.5f;
igfd::ImGuiFileDialog::Instance()->FileDialog("ChooseFileDlgKey", ImGuiWindowFlags_NoCollapse, minSize, maxSize);

Detail View Mode

You can have tables display like that.

you need to use imgui tables branch (not merged in master at this moment)
uncomment "#define USE_IMGUI_TABLES" in you custom config file (CustomImGuiFileDialogConfig.h in this example)

Using ImGuiFileDialog as a module

You can customize ImGuiFileDialog for avoid code modification/adaptation.

You just need to write your own config file by override the file : ImGuiFileDialog/ImGuiFileDialogConfig.h like i do here with CustomImGuiFileDialogConfig.h

After that, for let ImGuiFileDialog your own custom file, you must define the preprocessor directive CUSTOM_IMGUIFILEDIALOG_CONFIG with the path of you custom config file. This path must be relative to the directory where you put ImGuiFileDialog module.

Thats all.

You can check by example in this repo with the file CustomImGuiFileDialogConfig.h :

this trick was used for have custom icon font instead of labels for buttons or messages titles
you can also use your custom imgui button, the button call stamp must be same by the way :)

The Custom Icon Font (in CustomFont.cpp and CustomFont.h) was made with ImGuiFontStudio i wrote for that :) ImGuiFontStudio is using also ImGuiFileDialog.

AccelMR/ImGuiFileDialog