Implement native file dialog for opening projects

native/intuitives_daw/CMakeLists.txt

@@ -184,7 +184,7 @@ elseif(PLATFORM_LINUX)
     endif()
     target_link_libraries(IntuitivesDAW PRIVATE m pthread dl)
 elseif(PLATFORM_WINDOWS)
-    target_link_libraries(IntuitivesDAW PRIVATE ole32 winmm ws2_32)
+    target_link_libraries(IntuitivesDAW PRIVATE ole32 winmm ws2_32 comdlg32)
 endif()
 
 # ============================================================================

native/intuitives_daw/src/gui/intuitives_gui.cpp

@@ -24,6 +24,12 @@
 #include <stdlib.h>
 #include <string.h>
 
+#ifdef _WIN32
+#define NOMINMAX
+#include <windows.h>
+#include <commdlg.h>
+#endif
+
 // ============================================================================
 // STATIC STATE
 // ============================================================================
@@ -208,6 +214,72 @@
   style.ItemSpacing = ImVec2(8, 6);
 }
 
+// ============================================================================
+// FILE DIALOG
+// ============================================================================
+
+static bool gui_open_file_dialog(char *out_path, size_t max_len) {
+#if SG_OS == 0 // macOS
+  FILE *pipe = popen("osascript -e 'POSIX path of (choose file of type "
+                     "{\"intv\"} with prompt \"Open Project\")' 2>/dev/null",
+                     "r");
+  if (!pipe)
+    return false;
+  if (fgets(out_path, (int)max_len, pipe)) {
+    size_t len = strlen(out_path);
+    if (len > 0 && out_path[len - 1] == '\n') {
+      out_path[len - 1] = 0;
+    }
+    pclose(pipe);
+    return true;
+  }
+  pclose(pipe);
+  return false;
+
+#elif SG_OS == 1 // Linux
+  // Try Zenity first
+  FILE *pipe = popen("zenity --file-selection --title=\"Open Project\" "
+                     "--file-filter=\"*.intv\" 2>/dev/null",
+                     "r");
+  if (!pipe)
+    return false;
+  if (fgets(out_path, (int)max_len, pipe)) {
+    size_t len = strlen(out_path);
+    if (len > 0 && out_path[len - 1] == '\n') {
+      out_path[len - 1] = 0;
+    }
+    pclose(pipe);
+    return true;
+  }
+  pclose(pipe);
+  return false;
+
+#elif SG_OS == 2 // Windows
+  OPENFILENAMEA ofn;
+  memset(&ofn, 0, sizeof(ofn));
+  out_path[0] = 0;
+
+  ofn.lStructSize = sizeof(ofn);
+  ofn.hwndOwner = NULL; // No parent window handle available easily here
+  ofn.lpstrFile = out_path;
+  ofn.nMaxFile = (DWORD)max_len;
+  ofn.lpstrFilter = "Intuitives Project (*.intv)\0*.intv\0All Files (*.*)\0*.*\0";
+  ofn.nFilterIndex = 1;
+  ofn.lpstrFileTitle = NULL;
+  ofn.nMaxFileTitle = 0;
+  ofn.lpstrInitialDir = NULL;
+  ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST | OFN_NOCHANGEDIR;
+
+  if (GetOpenFileNameA(&ofn) == TRUE) {
+    return true;
+  }
+  return false;
+
+#else
+  return false;
+#endif
+}
+
 // ============================================================================
 // MENU BAR
 // ============================================================================
@@ -219,7 +291,10 @@
         daw_new_project(app, "Untitled");
       }
       if (ImGui::MenuItem("Open...", "Cmd+O")) {
-        // TODO: File dialog
+        static char path[1024];
+        if (gui_open_file_dialog(path, 1024)) {
+          daw_load_project(app, path);
+        }
       }
       if (ImGui::MenuItem("Save", "Cmd+S")) {
         if (strlen(app->project.filepath) > 0) {