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ImFileDialog.cpp
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#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
#define _CRT_SECURE_NO_WARNINGS
#endif
#include "ImFileDialog.h"
#include <fstream>
#include <algorithm>
#include <sys/stat.h>
#define IMGUI_DEFINE_MATH_OPERATORS
#include <imgui/imgui.h>
#include <imgui/imgui_internal.h>
#include "stb_image.h"
#ifdef _WIN32
#include <windows.h>
#include <shellapi.h>
#include <lmcons.h>
#pragma comment(lib, "Shell32.lib")
#else
#include <unistd.h>
#include <pwd.h>
#endif
#define ICON_SIZE ImGui::GetFont()->FontSize + 3
#define GUI_ELEMENT_SIZE 24
#define DEFAULT_ICON_SIZE 32
#define PI 3.141592f
namespace ifd {
/* UI CONTROLS */
bool FolderNode(const char* label, ImTextureID icon, bool& clicked)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
clicked = false;
ImU32 id = window->GetID(label);
int opened = window->StateStorage.GetInt(id, 0);
ImVec2 pos = window->DC.CursorPos;
const bool is_mouse_x_over_arrow = (g.IO.MousePos.x >= pos.x && g.IO.MousePos.x < pos.x + g.FontSize);
if (ImGui::InvisibleButton(label, ImVec2(-FLT_MIN, g.FontSize + g.Style.FramePadding.y * 2)))
{
if (is_mouse_x_over_arrow) {
int* p_opened = window->StateStorage.GetIntRef(id, 0);
opened = *p_opened = !*p_opened;
} else {
clicked = true;
}
}
bool hovered = ImGui::IsItemHovered();
bool active = ImGui::IsItemActive();
bool doubleClick = ImGui::IsMouseDoubleClicked(ImGuiMouseButton_Left);
if (doubleClick && hovered) {
int* p_opened = window->StateStorage.GetIntRef(id, 0);
opened = *p_opened = !*p_opened;
clicked = false;
}
if (hovered || active)
window->DrawList->AddRectFilled(g.LastItemData.Rect.Min, g.LastItemData.Rect.Max, ImGui::ColorConvertFloat4ToU32(ImGui::GetStyle().Colors[active ? ImGuiCol_HeaderActive : ImGuiCol_HeaderHovered]));
// Icon, text
float icon_posX = pos.x + g.FontSize + g.Style.FramePadding.y;
float text_posX = icon_posX + g.Style.FramePadding.y + ICON_SIZE;
ImGui::RenderArrow(window->DrawList, ImVec2(pos.x, pos.y+g.Style.FramePadding.y), ImGui::ColorConvertFloat4ToU32(ImGui::GetStyle().Colors[((hovered && is_mouse_x_over_arrow) || opened) ? ImGuiCol_Text : ImGuiCol_TextDisabled]), opened ? ImGuiDir_Down : ImGuiDir_Right);
window->DrawList->AddImage(icon, ImVec2(icon_posX, pos.y), ImVec2(icon_posX + ICON_SIZE, pos.y + ICON_SIZE));
ImGui::RenderText(ImVec2(text_posX, pos.y + g.Style.FramePadding.y), label);
if (opened)
ImGui::TreePush(label);
return opened != 0;
}
bool FileNode(const char* label, ImTextureID icon) {
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
ImU32 id = window->GetID(label);
ImVec2 pos = window->DC.CursorPos;
bool ret = ImGui::InvisibleButton(label, ImVec2(-FLT_MIN, g.FontSize + g.Style.FramePadding.y * 2));
bool hovered = ImGui::IsItemHovered();
bool active = ImGui::IsItemActive();
if (hovered || active)
window->DrawList->AddRectFilled(g.LastItemData.Rect.Min, g.LastItemData.Rect.Max, ImGui::ColorConvertFloat4ToU32(ImGui::GetStyle().Colors[active ? ImGuiCol_HeaderActive : ImGuiCol_HeaderHovered]));
// Icon, text
window->DrawList->AddImage(icon, ImVec2(pos.x, pos.y), ImVec2(pos.x + ICON_SIZE, pos.y + ICON_SIZE));
ImGui::RenderText(ImVec2(pos.x + g.Style.FramePadding.y + ICON_SIZE, pos.y + g.Style.FramePadding.y), label);
return ret;
}
bool PathBox(const char* label, std::filesystem::path& path, char* pathBuffer, ImVec2 size_arg) {
ImGuiWindow* window = ImGui::GetCurrentWindow();
if (window->SkipItems)
return false;
bool ret = false;
const ImGuiID id = window->GetID(label);
int* state = window->StateStorage.GetIntRef(id, 0);
ImGui::SameLine();
ImGuiContext& g = *GImGui;
const ImGuiStyle& style = g.Style;
ImVec2 pos = window->DC.CursorPos;
ImVec2 uiPos = ImGui::GetCursorPos();
ImVec2 size = ImGui::CalcItemSize(size_arg, 200, GUI_ELEMENT_SIZE);
const ImRect bb(pos, pos + size);
// buttons
if (!(*state & 0b001)) {
ImGui::PushClipRect(bb.Min, bb.Max, false);
// background
bool hovered = g.IO.MousePos.x >= bb.Min.x && g.IO.MousePos.x <= bb.Max.x &&
g.IO.MousePos.y >= bb.Min.y && g.IO.MousePos.y <= bb.Max.y;
bool clicked = hovered && ImGui::IsMouseReleased(ImGuiMouseButton_Left);
bool anyOtherHC = false; // are any other items hovered or clicked?
window->DrawList->AddRectFilled(pos, pos + size, ImGui::ColorConvertFloat4ToU32(ImGui::GetStyle().Colors[(*state & 0b10) ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg]));
// fetch the buttons (so that we can throw some away if needed)
std::vector<std::string> btnList;
float totalWidth = 0.0f;
for (auto comp : path) {
std::string section = comp.u8string();
if (section.size() == 1 && (section[0] == '\\' || section[0] == '/'))
continue;
totalWidth += ImGui::CalcTextSize(section.c_str()).x + style.FramePadding.x * 2.0f + GUI_ELEMENT_SIZE;
btnList.push_back(section);
}
totalWidth -= GUI_ELEMENT_SIZE;
// UI buttons
ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(0.0f, ImGui::GetStyle().ItemSpacing.y));
ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 0.0f);
bool isFirstElement = true;
for (int i = 0; i < btnList.size(); i++) {
if (totalWidth > size.x - 30 && i != btnList.size() - 1) { // trim some buttons if there's not enough space
float elSize = ImGui::CalcTextSize(btnList[i].c_str()).x + style.FramePadding.x * 2.0f + GUI_ELEMENT_SIZE;
totalWidth -= elSize;
continue;
}
ImGui::PushID(i);
if (!isFirstElement) {
ImGui::ArrowButtonEx("##dir_dropdown", ImGuiDir_Right, ImVec2(GUI_ELEMENT_SIZE, GUI_ELEMENT_SIZE));
anyOtherHC |= ImGui::IsItemHovered() | ImGui::IsItemClicked();
ImGui::SameLine();
}
if (ImGui::Button(btnList[i].c_str(), ImVec2(0, GUI_ELEMENT_SIZE))) {
#ifdef _WIN32
std::string newPath = "";
#else
std::string newPath = "/";
#endif
for (int j = 0; j <= i; j++) {
newPath += btnList[j];
#ifdef _WIN32
if (j != i)
newPath += "\\";
#else
if (j != i)
newPath += "/";
#endif
}
path = std::filesystem::u8path(newPath);
ret = true;
}
anyOtherHC |= ImGui::IsItemHovered() | ImGui::IsItemClicked();
ImGui::SameLine();
ImGui::PopID();
isFirstElement = false;
}
ImGui::PopStyleVar(2);
// click state
if (!anyOtherHC && clicked) {
strcpy(pathBuffer, path.u8string().c_str());
*state |= 0b001;
*state &= 0b011; // remove SetKeyboardFocus flag
}
else
*state &= 0b110;
// hover state
if (!anyOtherHC && hovered && !clicked)
*state |= 0b010;
else
*state &= 0b101;
ImGui::PopClipRect();
// allocate space
ImGui::SetCursorPos(uiPos);
ImGui::ItemSize(size);
}
// input box
else {
bool skipActiveCheck = false;
if (!(*state & 0b100)) {
skipActiveCheck = true;
ImGui::SetKeyboardFocusHere();
if (!ImGui::IsMouseClicked(ImGuiMouseButton_Left))
*state |= 0b100;
}
if (ImGui::InputTextEx("##pathbox_input", "", pathBuffer, 1024, size_arg, ImGuiInputTextFlags_EnterReturnsTrue)) {
std::string tempStr(pathBuffer);
if (std::filesystem::exists(tempStr))
path = std::filesystem::u8path(tempStr);
ret = true;
}
if (!skipActiveCheck && !ImGui::IsItemActive())
*state &= 0b010;
}
return ret;
}
bool FavoriteButton(const char* label, bool isFavorite)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
ImVec2 pos = window->DC.CursorPos;
bool ret = ImGui::InvisibleButton(label, ImVec2(GUI_ELEMENT_SIZE, GUI_ELEMENT_SIZE));
bool hovered = ImGui::IsItemHovered();
bool active = ImGui::IsItemActive();
float size = g.LastItemData.Rect.Max.x - g.LastItemData.Rect.Min.x;
int numPoints = 5;
float innerRadius = size / 4;
float outerRadius = size / 2;
float angle = PI / numPoints;
ImVec2 center = ImVec2(pos.x + size / 2, pos.y + size / 2);
// fill
if (isFavorite || hovered || active) {
ImU32 fillColor = 0xff00ffff;// ImGui::ColorConvertFloat4ToU32(ImGui::GetStyle().Colors[ImGuiCol_Text]);
if (hovered || active)
fillColor = ImGui::ColorConvertFloat4ToU32(ImGui::GetStyle().Colors[active ? ImGuiCol_HeaderActive : ImGuiCol_HeaderHovered]);
// since there is no PathFillConcave, fill first the inner part, then the triangles
// inner
window->DrawList->PathClear();
for (int i = 1; i < numPoints * 2; i += 2)
window->DrawList->PathLineTo(ImVec2(center.x + innerRadius * sin(i * angle), center.y - innerRadius * cos(i * angle)));
window->DrawList->PathFillConvex(fillColor);
// triangles
for (int i = 0; i < numPoints; i++) {
window->DrawList->PathClear();
int pIndex = i * 2;
window->DrawList->PathLineTo(ImVec2(center.x + outerRadius * sin(pIndex * angle), center.y - outerRadius * cos(pIndex * angle)));
window->DrawList->PathLineTo(ImVec2(center.x + innerRadius * sin((pIndex + 1) * angle), center.y - innerRadius * cos((pIndex + 1) * angle)));
window->DrawList->PathLineTo(ImVec2(center.x + innerRadius * sin((pIndex - 1) * angle), center.y - innerRadius * cos((pIndex - 1) * angle)));
window->DrawList->PathFillConvex(fillColor);
}
}
// outline
window->DrawList->PathClear();
for (int i = 0; i < numPoints * 2; i++) {
float radius = i & 1 ? innerRadius : outerRadius;
window->DrawList->PathLineTo(ImVec2(center.x + radius * sin(i * angle), center.y - radius * cos(i * angle)));
}
window->DrawList->PathStroke(ImGui::ColorConvertFloat4ToU32(ImGui::GetStyle().Colors[ImGuiCol_Text]), true, 2.0f);
return ret;
}
bool FileIcon(const char* label, bool isSelected, ImTextureID icon, ImVec2 size, bool hasPreview, int previewWidth, int previewHeight)
{
ImGuiStyle& style = ImGui::GetStyle();
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
float windowSpace = ImGui::GetWindowPos().x + ImGui::GetWindowContentRegionMax().x;
ImVec2 pos = window->DC.CursorPos;
bool ret = false;
if (ImGui::InvisibleButton(label, size))
ret = true;
bool hovered = ImGui::IsItemHovered();
bool active = ImGui::IsItemActive();
bool doubleClick = ImGui::IsMouseDoubleClicked(ImGuiMouseButton_Left);
if (doubleClick && hovered)
ret = true;
float iconSize = size.y - g.FontSize * 2;
float iconPosX = pos.x + (size.x - iconSize) / 2.0f;
ImVec2 textSize = ImGui::CalcTextSize(label, 0, true, size.x);
if (hovered || active || isSelected)
window->DrawList->AddRectFilled(g.LastItemData.Rect.Min, g.LastItemData.Rect.Max, ImGui::ColorConvertFloat4ToU32(ImGui::GetStyle().Colors[active ? ImGuiCol_HeaderActive : (isSelected ? ImGuiCol_Header : ImGuiCol_HeaderHovered)]));
if (hasPreview) {
ImVec2 availSize = ImVec2(size.x, iconSize);
float scale = std::min<float>(availSize.x / previewWidth, availSize.y / previewHeight);
availSize.x = previewWidth * scale;
availSize.y = previewHeight * scale;
float previewPosX = pos.x + (size.x - availSize.x) / 2.0f;
float previewPosY = pos.y + (iconSize - availSize.y) / 2.0f;
window->DrawList->AddImage(icon, ImVec2(previewPosX, previewPosY), ImVec2(previewPosX + availSize.x, previewPosY + availSize.y));
} else
window->DrawList->AddImage(icon, ImVec2(iconPosX, pos.y), ImVec2(iconPosX + iconSize, pos.y + iconSize));
window->DrawList->AddText(g.Font, g.FontSize, ImVec2(pos.x + (size.x-textSize.x) / 2.0f, pos.y + iconSize), ImGui::ColorConvertFloat4ToU32(ImGui::GetStyle().Colors[ImGuiCol_Text]), label, 0, size.x);
float lastButtomPos = ImGui::GetItemRectMax().x;
float thisButtonPos = lastButtomPos + style.ItemSpacing.x + size.x; // Expected position if next button was on same line
if (thisButtonPos < windowSpace)
ImGui::SameLine();
return ret;
}
FileDialog::FileData::FileData(const std::filesystem::path& path) {
std::error_code ec;
Path = path;
IsDirectory = std::filesystem::is_directory(path, ec);
Size = std::filesystem::file_size(path, ec);
struct stat attr;
stat(path.u8string().c_str(), &attr);
DateModified = attr.st_ctime;
HasIconPreview = false;
IconPreview = nullptr;
IconPreviewData = nullptr;
IconPreviewHeight = 0;
IconPreviewWidth = 0;
}
FileDialog::FileDialog() {
m_isOpen = false;
m_type = 0;
m_calledOpenPopup = false;
m_sortColumn = 0;
m_sortDirection = ImGuiSortDirection_Ascending;
m_filterSelection = 0;
m_inputTextbox[0] = 0;
m_pathBuffer[0] = 0;
m_searchBuffer[0] = 0;
m_newEntryBuffer[0] = 0;
m_selectedFileItem = -1;
m_zoom = 1.0f;
m_previewLoader = nullptr;
m_previewLoaderRunning = false;
m_setDirectory(std::filesystem::current_path(), false);
// favorites are available on every OS
FileTreeNode* quickAccess = new FileTreeNode("Quick Access");
quickAccess->Read = true;
m_treeCache.push_back(quickAccess);
#ifdef _WIN32
wchar_t username[UNLEN + 1] = { 0 };
DWORD username_len = UNLEN + 1;
GetUserNameW(username, &username_len);
std::wstring userPath = L"C:\\Users\\" + std::wstring(username) + L"\\";
// Quick Access / Bookmarks
quickAccess->Children.push_back(new FileTreeNode(userPath + L"Desktop"));
quickAccess->Children.push_back(new FileTreeNode(userPath + L"Documents"));
quickAccess->Children.push_back(new FileTreeNode(userPath + L"Downloads"));
quickAccess->Children.push_back(new FileTreeNode(userPath + L"Pictures"));
// OneDrive
FileTreeNode* oneDrive = new FileTreeNode(userPath + L"OneDrive");
m_treeCache.push_back(oneDrive);
// This PC
FileTreeNode* thisPC = new FileTreeNode("This PC");
thisPC->Read = true;
if (std::filesystem::exists(userPath + L"3D Objects"))
thisPC->Children.push_back(new FileTreeNode(userPath + L"3D Objects"));
thisPC->Children.push_back(new FileTreeNode(userPath + L"Desktop"));
thisPC->Children.push_back(new FileTreeNode(userPath + L"Documents"));
thisPC->Children.push_back(new FileTreeNode(userPath + L"Downloads"));
thisPC->Children.push_back(new FileTreeNode(userPath + L"Music"));
thisPC->Children.push_back(new FileTreeNode(userPath + L"Pictures"));
thisPC->Children.push_back(new FileTreeNode(userPath + L"Videos"));
DWORD d = GetLogicalDrives();
for (int i = 0; i < 26; i++)
if (d & (1 << i))
thisPC->Children.push_back(new FileTreeNode(std::string(1, 'A' + i) + ":"));
m_treeCache.push_back(thisPC);
#else
std::error_code ec;
// Quick Access
struct passwd *pw;
uid_t uid;
uid = geteuid();
pw = getpwuid(uid);
if (pw) {
std::string homePath = "/home/" + std::string(pw->pw_name);
if (std::filesystem::exists(homePath, ec))
quickAccess->Children.push_back(new FileTreeNode(homePath));
if (std::filesystem::exists(homePath + "/Desktop", ec))
quickAccess->Children.push_back(new FileTreeNode(homePath + "/Desktop"));
if (std::filesystem::exists(homePath + "/Documents", ec))
quickAccess->Children.push_back(new FileTreeNode(homePath + "/Documents"));
if (std::filesystem::exists(homePath + "/Downloads", ec))
quickAccess->Children.push_back(new FileTreeNode(homePath + "/Downloads"));
if (std::filesystem::exists(homePath + "/Pictures", ec))
quickAccess->Children.push_back(new FileTreeNode(homePath + "/Pictures"));
}
// This PC
FileTreeNode* thisPC = new FileTreeNode("This PC");
thisPC->Read = true;
for (const auto& entry : std::filesystem::directory_iterator("/", ec)) {
if (std::filesystem::is_directory(entry, ec))
thisPC->Children.push_back(new FileTreeNode(entry.path().u8string()));
}
m_treeCache.push_back(thisPC);
#endif
}
FileDialog::~FileDialog() {
m_clearIconPreview();
m_clearIcons();
for (auto fn : m_treeCache)
m_clearTree(fn);
m_treeCache.clear();
}
bool FileDialog::Save(const std::string& key, const std::string& title, const std::string& filter, const std::string& startingDir)
{
if (!m_currentKey.empty())
return false;
m_currentKey = key;
m_currentTitle = title + "###" + key;
m_isOpen = true;
m_calledOpenPopup = false;
m_result.clear();
m_inputTextbox[0] = 0;
m_selections.clear();
m_selectedFileItem = -1;
m_isMultiselect = false;
m_type = IFD_DIALOG_SAVE;
m_parseFilter(filter);
if (!startingDir.empty())
m_setDirectory(std::filesystem::u8path(startingDir), false);
else
m_setDirectory(m_currentDirectory, false); // refresh contents
return true;
}
bool FileDialog::Open(const std::string& key, const std::string& title, const std::string& filter, bool isMultiselect, const std::string& startingDir)
{
if (!m_currentKey.empty())
return false;
m_currentKey = key;
m_currentTitle = title + "###" + key;
m_isOpen = true;
m_calledOpenPopup = false;
m_result.clear();
m_inputTextbox[0] = 0;
m_selections.clear();
m_selectedFileItem = -1;
m_isMultiselect = isMultiselect;
m_type = filter.empty() ? IFD_DIALOG_DIRECTORY : IFD_DIALOG_FILE;
m_parseFilter(filter);
if (!startingDir.empty())
m_setDirectory(std::filesystem::u8path(startingDir), false);
else
m_setDirectory(m_currentDirectory, false); // refresh contents
return true;
}
bool FileDialog::IsDone(const std::string& key)
{
bool isMe = m_currentKey == key;
if (isMe && m_isOpen) {
if (!m_calledOpenPopup) {
ImGui::SetNextWindowSize(ImVec2(600, 400), ImGuiCond_FirstUseEver);
ImGui::OpenPopup(m_currentTitle.c_str());
m_calledOpenPopup = true;
}
if (ImGui::BeginPopupModal(m_currentTitle.c_str(), &m_isOpen, ImGuiWindowFlags_NoScrollbar)) {
m_renderFileDialog();
ImGui::EndPopup();
}
else m_isOpen = false;
}
return isMe && !m_isOpen;
}
void FileDialog::Close()
{
m_currentKey.clear();
m_backHistory = std::stack<std::filesystem::path>();
m_forwardHistory = std::stack<std::filesystem::path>();
// clear the tree
for (auto fn : m_treeCache) {
for (auto item : fn->Children) {
for (auto ch : item->Children)
m_clearTree(ch);
item->Children.clear();
item->Read = false;
}
}
// free icon textures
m_clearIconPreview();
m_clearIcons();
}
void FileDialog::RemoveFavorite(const std::string& path)
{
auto itr = std::find(m_favorites.begin(), m_favorites.end(), m_currentDirectory.u8string());
if (itr != m_favorites.end())
m_favorites.erase(itr);
// remove from sidebar
for (auto& p : m_treeCache)
if (p->Path == "Quick Access") {
for (int i = 0; i < p->Children.size(); i++)
if (p->Children[i]->Path == path) {
p->Children.erase(p->Children.begin() + i);
break;
}
break;
}
}
void FileDialog::AddFavorite(const std::string& path)
{
if (std::count(m_favorites.begin(), m_favorites.end(), path) > 0)
return;
if (!std::filesystem::exists(std::filesystem::u8path(path)))
return;
m_favorites.push_back(path);
// add to sidebar
for (auto& p : m_treeCache)
if (p->Path == "Quick Access") {
p->Children.push_back(new FileTreeNode(path));
break;
}
}
void FileDialog::m_select(const std::filesystem::path& path, bool isCtrlDown)
{
bool multiselect = isCtrlDown && m_isMultiselect;
if (!multiselect) {
m_selections.clear();
m_selections.push_back(path);
} else {
auto it = std::find(m_selections.begin(), m_selections.end(), path);
if (it != m_selections.end())
m_selections.erase(it);
else
m_selections.push_back(path);
}
if (m_selections.size() == 1) {
std::string filename = m_selections[0].filename().u8string();
if (filename.size() == 0)
filename = m_selections[0].u8string(); // drive
strcpy(m_inputTextbox, filename.c_str());
}
else {
std::string textboxVal = "";
for (const auto& sel : m_selections) {
std::string filename = sel.filename().u8string();
if (filename.size() == 0)
filename = sel.u8string();
textboxVal += "\"" + filename + "\", ";
}
strcpy(m_inputTextbox, textboxVal.substr(0, textboxVal.size() - 2).c_str());
}
}
bool FileDialog::m_finalize(const std::string& filename)
{
bool hasResult = (!filename.empty() && m_type != IFD_DIALOG_DIRECTORY) || m_type == IFD_DIALOG_DIRECTORY;
if (hasResult) {
if (!m_isMultiselect || m_selections.size() <= 1) {
std::filesystem::path path = std::filesystem::u8path(filename);
if (path.is_absolute()) m_result.push_back(path);
else m_result.push_back(m_currentDirectory / path);
if (m_type == IFD_DIALOG_DIRECTORY || m_type == IFD_DIALOG_FILE) {
if (!std::filesystem::exists(m_result.back())) {
m_result.clear();
return false;
}
}
}
else {
for (const auto& sel : m_selections) {
if (sel.is_absolute()) m_result.push_back(sel);
else m_result.push_back(m_currentDirectory / sel);
if (m_type == IFD_DIALOG_DIRECTORY || m_type == IFD_DIALOG_FILE) {
if (!std::filesystem::exists(m_result.back())) {
m_result.clear();
return false;
}
}
}
}
if (m_type == IFD_DIALOG_SAVE) {
// add the extension
if (m_filterSelection < m_filterExtensions.size() && m_filterExtensions[m_filterSelection].size() > 0) {
if (!m_result.back().has_extension()) {
std::string extAdd = m_filterExtensions[m_filterSelection][0];
m_result.back().replace_extension(extAdd);
}
}
}
}
m_isOpen = false;
return true;
}
void FileDialog::m_parseFilter(const std::string& filter)
{
m_filter = "";
m_filterExtensions.clear();
m_filterSelection = 0;
if (filter.empty())
return;
std::vector<std::string> exts;
int lastSplit = 0, lastExt = 0;
bool inExtList = false;
for (int i = 0; i < filter.size(); i++) {
if (filter[i] == ',') {
if (!inExtList)
lastSplit = i + 1;
else {
exts.push_back(filter.substr(lastExt, i - lastExt));
lastExt = i + 1;
}
}
else if (filter[i] == '{') {
std::string filterName = filter.substr(lastSplit, i - lastSplit);
if (filterName == ".*") {
m_filter += std::string(std::string("All Files (*.*)\0").c_str(), 16);
m_filterExtensions.push_back(std::vector<std::string>());
}
else
m_filter += std::string((filterName + "\0").c_str(), filterName.size() + 1);
inExtList = true;
lastExt = i + 1;
}
else if (filter[i] == '}') {
exts.push_back(filter.substr(lastExt, i - lastExt));
m_filterExtensions.push_back(exts);
exts.clear();
inExtList = false;
}
}
if (lastSplit != 0) {
std::string filterName = filter.substr(lastSplit);
if (filterName == ".*") {
m_filter += std::string(std::string("All Files (*.*)\0").c_str(), 16);
m_filterExtensions.push_back(std::vector<std::string>());
}
else
m_filter += std::string((filterName + "\0").c_str(), filterName.size() + 1);
}
}
void* FileDialog::m_getIcon(const std::filesystem::path& path)
{
#ifdef _WIN32
if (m_icons.count(path.u8string()) > 0)
return m_icons[path.u8string()];
std::string pathU8 = path.u8string();
std::error_code ec;
m_icons[pathU8] = nullptr;
DWORD attrs = 0;
UINT flags = SHGFI_ICON | SHGFI_LARGEICON;
if (!std::filesystem::exists(path, ec)) {
flags |= SHGFI_USEFILEATTRIBUTES;
attrs = FILE_ATTRIBUTE_DIRECTORY;
}
SHFILEINFOW fileInfo = { 0 };
std::wstring pathW = path.wstring();
for (int i = 0; i < pathW.size(); i++)
if (pathW[i] == '/')
pathW[i] = '\\';
SHGetFileInfoW(pathW.c_str(), attrs, &fileInfo, sizeof(SHFILEINFOW), flags);
if (fileInfo.hIcon == nullptr)
return nullptr;
// check if icon is already loaded
auto itr = std::find(m_iconIndices.begin(), m_iconIndices.end(), fileInfo.iIcon);
if (itr != m_iconIndices.end()) {
const std::string& existingIconFilepath = m_iconFilepaths[itr - m_iconIndices.begin()];
m_icons[pathU8] = m_icons[existingIconFilepath];
return m_icons[pathU8];
}
m_iconIndices.push_back(fileInfo.iIcon);
m_iconFilepaths.push_back(pathU8);
ICONINFO iconInfo = { 0 };
GetIconInfo(fileInfo.hIcon, &iconInfo);
if (iconInfo.hbmColor == nullptr)
return nullptr;
DIBSECTION ds;
GetObject(iconInfo.hbmColor, sizeof(ds), &ds);
int byteSize = ds.dsBm.bmWidth * ds.dsBm.bmHeight * (ds.dsBm.bmBitsPixel / 8);
if (byteSize == 0)
return nullptr;
uint8_t* data = (uint8_t*)malloc(byteSize);
GetBitmapBits(iconInfo.hbmColor, byteSize, data);
m_icons[pathU8] = this->CreateTexture(data, ds.dsBm.bmWidth, ds.dsBm.bmHeight, 0);
free(data);
return m_icons[pathU8];
#else
if (m_icons.count(path.u8string()) > 0)
return m_icons[path.u8string()];
std::string pathU8 = path.u8string();
m_icons[pathU8] = nullptr;
std::error_code ec;
int iconID = 1;
if (std::filesystem::is_directory(path, ec))
iconID = 0;
// check if icon is already loaded
auto itr = std::find(m_iconIndices.begin(), m_iconIndices.end(), iconID);
if (itr != m_iconIndices.end()) {
const std::string& existingIconFilepath = m_iconFilepaths[itr - m_iconIndices.begin()];
m_icons[pathU8] = m_icons[existingIconFilepath];
return m_icons[pathU8];
}
m_iconIndices.push_back(iconID);
m_iconFilepaths.push_back(pathU8);
ImVec4 wndBg = ImGui::GetStyleColorVec4(ImGuiCol_WindowBg);
// light theme - load default icons
if ((wndBg.x + wndBg.y + wndBg.z) / 3.0f > 0.5f) {
uint8_t* data = (uint8_t*)ifd::GetDefaultFileIcon();
if (iconID == 0)
data = (uint8_t*)ifd::GetDefaultFolderIcon();
m_icons[pathU8] = this->CreateTexture(data, DEFAULT_ICON_SIZE, DEFAULT_ICON_SIZE, 0);
}
// dark theme - invert the colors
else {
uint8_t* data = (uint8_t*)ifd::GetDefaultFileIcon();
if (iconID == 0)
data = (uint8_t*)ifd::GetDefaultFolderIcon();
uint8_t* invData = (uint8_t*)malloc(DEFAULT_ICON_SIZE * DEFAULT_ICON_SIZE * 4);
for (int y = 0; y < 32; y++) {
for (int x = 0; x < 32; x++) {
int index = (y* DEFAULT_ICON_SIZE + x) * 4;
invData[index + 0] = 255 - data[index + 0];
invData[index + 1] = 255 - data[index + 1];
invData[index + 2] = 255 - data[index + 2];
invData[index + 3] = data[index + 3];
}
}
m_icons[pathU8] = this->CreateTexture(invData, DEFAULT_ICON_SIZE, DEFAULT_ICON_SIZE, 0);
free(invData);
}
return m_icons[pathU8];
#endif
}
void FileDialog::m_clearIcons()
{
std::vector<unsigned int> deletedIcons;
// delete textures
for (auto& icon : m_icons) {
unsigned int ptr = (unsigned int)((uintptr_t)icon.second);
if (std::count(deletedIcons.begin(), deletedIcons.end(), ptr)) // skip duplicates
continue;
deletedIcons.push_back(ptr);
DeleteTexture(icon.second);
}
m_iconFilepaths.clear();
m_iconIndices.clear();
m_icons.clear();
}
void FileDialog::m_refreshIconPreview()
{
if (m_zoom >= 5.0f) {
if (m_previewLoader == nullptr) {
m_previewLoaderRunning = true;
m_previewLoader = new std::thread(&FileDialog::m_loadPreview, this);
}
} else
m_clearIconPreview();
}
void FileDialog::m_clearIconPreview()
{
m_stopPreviewLoader();
for (auto& data : m_content) {
if (!data.HasIconPreview)
continue;
data.HasIconPreview = false;
this->DeleteTexture(data.IconPreview);
if (data.IconPreviewData != nullptr) {
stbi_image_free(data.IconPreviewData);
data.IconPreviewData = nullptr;
}
}
}
void FileDialog::m_stopPreviewLoader()
{
if (m_previewLoader != nullptr) {
m_previewLoaderRunning = false;
if (m_previewLoader && m_previewLoader->joinable())
m_previewLoader->join();
delete m_previewLoader;
m_previewLoader = nullptr;
}
}
void FileDialog::m_loadPreview()
{
for (int i = 0; m_previewLoaderRunning && i < m_content.size(); i++) {
auto& data = m_content[i];
if (data.HasIconPreview)
continue;
if (data.Path.has_extension()) {
std::string ext = data.Path.extension().u8string();
if (ext == ".png" || ext == ".jpg" || ext == ".jpeg" || ext == ".bmp" || ext == ".tga") {
int width, height, nrChannels;
unsigned char* image = stbi_load(data.Path.u8string().c_str(), &width, &height, &nrChannels, STBI_rgb_alpha);
if (image == nullptr || width == 0 || height == 0)
continue;
data.HasIconPreview = true;
data.IconPreviewData = image;
data.IconPreviewWidth = width;
data.IconPreviewHeight = height;
}
}
}
m_previewLoaderRunning = false;
}
void FileDialog::m_clearTree(FileTreeNode* node)
{
if (node == nullptr)
return;
for (auto n : node->Children)
m_clearTree(n);
delete node;
node = nullptr;
}
void FileDialog::m_setDirectory(const std::filesystem::path& p, bool addHistory)
{
bool isSameDir = m_currentDirectory == p;
if (addHistory && !isSameDir)
m_backHistory.push(m_currentDirectory);
m_currentDirectory = p;
#ifdef _WIN32
// drives don't work well without the backslash symbol
if (p.u8string().size() == 2 && p.u8string()[1] == ':')
m_currentDirectory = std::filesystem::u8path(p.u8string() + "\\");
#endif
m_clearIconPreview();
m_content.clear(); // p == "" after this line, due to reference
m_selectedFileItem = -1;
if (m_type == IFD_DIALOG_DIRECTORY || m_type == IFD_DIALOG_FILE)
m_inputTextbox[0] = 0;
m_selections.clear();
if (!isSameDir) {
m_searchBuffer[0] = 0;
m_clearIcons();
}
if (p.u8string() == "Quick Access") {
for (auto& node : m_treeCache) {
if (node->Path == p)
for (auto& c : node->Children)
m_content.push_back(FileData(c->Path));
}
}
else if (p.u8string() == "This PC") {
for (auto& node : m_treeCache) {
if (node->Path == p)
for (auto& c : node->Children)
m_content.push_back(FileData(c->Path));
}
}
else {
std::error_code ec;
if (std::filesystem::exists(m_currentDirectory, ec))
for (const auto& entry : std::filesystem::directory_iterator(m_currentDirectory, ec)) {
FileData info(entry.path());
// skip files when IFD_DIALOG_DIRECTORY
if (!info.IsDirectory && m_type == IFD_DIALOG_DIRECTORY)
continue;
// check if filename matches search query
if (m_searchBuffer[0]) {
std::string filename = info.Path.u8string();
std::string filenameSearch = filename;
std::string query(m_searchBuffer);
std::transform(filenameSearch.begin(), filenameSearch.end(), filenameSearch.begin(), ::tolower);
std::transform(query.begin(), query.end(), query.begin(), ::tolower);
if (filenameSearch.find(query, 0) == std::string::npos)
continue;
}
// check if extension matches
if (!info.IsDirectory && m_type != IFD_DIALOG_DIRECTORY) {
if (m_filterSelection < m_filterExtensions.size()) {
const auto& exts = m_filterExtensions[m_filterSelection];
if (exts.size() > 0) {
std::string extension = info.Path.extension().u8string();
// extension not found? skip
if (std::count(exts.begin(), exts.end(), extension) == 0)
continue;
}
}
}
m_content.push_back(info);
}
}
m_sortContent(m_sortColumn, m_sortDirection);
m_refreshIconPreview();
}
void FileDialog::m_sortContent(unsigned int column, unsigned int sortDirection)
{
// 0 -> name, 1 -> date, 2 -> size
m_sortColumn = column;
m_sortDirection = sortDirection;