Update graphical interface with new branding (#766)

This incorporates the new Gambit logo/branding in the graphical interface:

* Modernise splash screen behaviour
* Modernise about dialog implementation and design

Author: tturocy

build_support/osx/Info.plist.in

@@ -1,37 +1,31 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist SYSTEM "file://localhost/System/Library/DTDs/PropertyList.dtd">
-<plist version="0.9">
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
 <dict>
 	<key>CFBundleInfoDictionaryVersion</key>
 	<string>6.0</string>
 	<key>CFBundleIdentifier</key>
 	<string>org.gambit-project.gambit</string>
 	<key>CFBundleDevelopmentRegion</key>
-	<string>English</string>
+	<string>en</string>
 	<key>CFBundleExecutable</key>
 	<string>gambit</string>
 	<key>CFBundleIconFile</key>
 	<string>gambit</string>
 	<key>CFBundleName</key>
 	<string>Gambit</string>
+	<key>CFBundleDisplayName</key>
+	<string>Gambit</string>
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
-	<key>CFBundleSignature</key>
-	<string>????</string>
 	<key>CFBundleVersion</key>
 	<string>@GAMBIT_VERSION@</string>
 	<key>CFBundleShortVersionString</key>
 	<string>@GAMBIT_VERSION@</string>
 	<key>CFBundleGetInfoString</key>
-	<string>Gambit version @GAMBIT_VERSION@, (c) 1994-2025 The Gambit Project</string>
-	<key>CFBundleLongVersionString</key>
-	<string>@GAMBIT_VERSION@, (c) 1994-2025 The Gambit Project</string>
+	<string>Gambit version @GAMBIT_VERSION@, (c) 1994-2026 The Gambit Project</string>
 	<key>NSHumanReadableCopyright</key>
-	<string>Copyright 1994-2025 The Gambit Project</string>
-	<key>LSRequiresCarbon</key>
-	<true/>
-	<key>CSResourcesFileMapped</key>
-	<true/>
+	<string>Copyright 1994-2026 The Gambit Project</string>
 	<key>CFBundleDocumentTypes</key>
 	<array>
 	  <dict>

build_support/osx/gambit.icns

@@ -26,19 +26,55 @@
 #ifndef WX_PRECOMP
 #include <wx/wx.h>
 #endif // WX_PRECOMP
+#include <wx/display.h>
 #include <wx/image.h>
-#include <wx/splash.h>
 
 #include "gambit.h"
 
 #include "app.h"
 #include "gameframe.h"
 
+#include "bitmaps/gambitbig.xpm"
+
 namespace Gambit::GUI {
 
-bool Application::OnInit()
+static wxBitmap MakeScaledSplashBitmap(const wxBitmap &srcBmp, double fracOfShortSide)
 {
-#include "bitmaps/gambitbig.xpm"
+  const wxPoint mouse = wxGetMousePosition();
+  const int dispIdx = wxDisplay::GetFromPoint(mouse);
+  wxDisplay disp(dispIdx == wxNOT_FOUND ? 0 : dispIdx);
+
+  wxRect geom = disp.GetGeometry(); // pixels in that display
+  const int shortSide = std::min(geom.width, geom.height);
+  const int targetMax = std::max(200, int(shortSide * fracOfShortSide));
+
+  const int w = srcBmp.GetWidth();
+  const int h = srcBmp.GetHeight();
+  const double s = double(targetMax) / double(std::max(w, h));
+
+  const int newW = std::max(1, int(std::lround(w * s)));
+  const int newH = std::max(1, int(std::lround(h * s)));
+
+  wxImage img = srcBmp.ConvertToImage();
+  img.Rescale(newW, newH, wxIMAGE_QUALITY_HIGH);
+
+  return wxBitmap(img);
+}
+
+wxBEGIN_EVENT_TABLE(Application, wxApp) EVT_TIMER(wxID_ANY, Application::OnSplashDismissTimer)
+    wxEND_EVENT_TABLE()
+
+        bool Application::OnInit()
+{
+  wxApp::OnInit();
+
+  const wxBitmap bitmap(gambitbig_xpm);
+  m_splashTimer.Start();
+  m_splash = new wxSplashScreen(MakeScaledSplashBitmap(bitmap, 0.45),
+                                wxSPLASH_CENTRE_ON_SCREEN | wxSPLASH_NO_TIMEOUT, 0, nullptr,
+                                wxID_ANY, wxDefaultPosition, wxDefaultSize, wxBORDER_SIMPLE);
+  m_splash->Show();
+  m_splash->Update();
   wxConfigBase::Set(new wxConfig(_T("Gambit"), _T("Gambit")));
   m_fileHistory.Load(*wxConfigBase::Get());
   // Immediately saving this back forces the entries to be created at
@@ -47,12 +83,6 @@ bool Application::OnInit()
   // m_fileHistory.Save(config);
   wxConfigBase::Get()->Read(_T("/General/CurrentDirectory"), &m_currentDir, _T(""));
 
-  const wxBitmap bitmap(gambitbig_xpm);
-  /*wxSplashScreen *splash =*/
-  new wxSplashScreen(bitmap, wxSPLASH_CENTRE_ON_SCREEN | wxSPLASH_TIMEOUT, 2000, nullptr, -1,
-                     wxDefaultPosition, wxDefaultSize, wxSIMPLE_BORDER | wxSTAY_ON_TOP);
-  wxYield();
-
   // Process command line arguments, if any.
   for (int i = 1; i < wxApp::argc; i++) {
     const AppLoadResult result = LoadFile(wxApp::argv[i]);
@@ -86,9 +116,30 @@ bool Application::OnInit()
   // Set up the help system.
   wxInitAllImageHandlers();
 
+  this->CallAfter(&Application::DismissSplash);
+
   return true;
 }
 
+void Application::DismissSplash()
+{
+  if (!m_splash) {
+    return;
+  }
+
+  const long minDisplay = 1000;
+  const long elapsed = m_splashTimer.Time();
+
+  if (elapsed < minDisplay) {
+    m_splashDismissTimer.SetOwner(this);
+    m_splashDismissTimer.StartOnce(minDisplay - elapsed);
+    return;
+  }
+
+  m_splash->Destroy();
+  m_splash = nullptr;
+}
+
 AppLoadResult Application::LoadFile(const wxString &p_filename)
 {
   std::ifstream infile((const char *)p_filename.mb_str());

src/gui/app.cc

@@ -26,6 +26,7 @@
 #include <wx/wx.h>
 #include <wx/config.h>  // for wxConfig
 #include <wx/docview.h> // for wxFileHistory
+#include <wx/splash.h>
 
 namespace Gambit::GUI {
 
@@ -37,8 +38,15 @@ class Application final : public wxApp {
   wxString m_currentDir; /* Current position in directory tree. */
   wxFileHistory m_fileHistory{10};
   std::list<GameDocument *> m_documents;
+  wxSplashScreen *m_splash{nullptr};
+  wxStopWatch m_splashTimer;
+  wxTimer m_splashDismissTimer;
 
   bool OnInit() override;
+  void DismissSplash();
+  void OnSplashDismissTimer(wxTimerEvent &) { DismissSplash(); }
+
+  wxDECLARE_EVENT_TABLE();
 
 public:
   Application() = default;