ADDED: Startup splashscreen

This is purely loading in the background based and has no artificial delay.
Will be more useful once kicad.exe ends up loading more on launch immediately ;)
Right now the splash is probably visible the longest launching pcbnew standalone.

The actual splash image can be considered a placeholder

common/bitmap_info.cpp

@@ -1093,6 +1093,7 @@ void BuildBitmapInfo( std::unordered_map<BITMAPS, std::vector<BITMAP_INFO>>& aBi
     aBitmapInfoCache[BITMAPS::rectwaveguide].emplace_back( BITMAPS::rectwaveguide, wxT( "rectwaveguide.png" ), -1, wxT( "light" ) );
     aBitmapInfoCache[BITMAPS::regul].emplace_back( BITMAPS::regul, wxT( "regul.png" ), -1, wxT( "light" ) );
     aBitmapInfoCache[BITMAPS::regul_3pins].emplace_back( BITMAPS::regul_3pins, wxT( "regul_3pins.png" ), -1, wxT( "light" ) );
+    aBitmapInfoCache[BITMAPS::splash].emplace_back( BITMAPS::splash, wxT( "splash.png" ), -1, wxT( "light" ) );
     aBitmapInfoCache[BITMAPS::stripline].emplace_back( BITMAPS::stripline, wxT( "stripline.png" ), -1, wxT( "light" ) );
     aBitmapInfoCache[BITMAPS::stroke_dash].emplace_back( BITMAPS::stroke_dash, wxT( "stroke_dash.png" ), -1, wxT( "light" ) );
     aBitmapInfoCache[BITMAPS::stroke_dashdot].emplace_back( BITMAPS::stroke_dashdot, wxT( "stroke_dashdot.png" ), -1, wxT( "light" ) );
@@ -1132,6 +1133,7 @@ void BuildBitmapInfo( std::unordered_map<BITMAPS, std::vector<BITMAP_INFO>>& aBi
     aBitmapInfoCache[BITMAPS::rectwaveguide].emplace_back( BITMAPS::rectwaveguide, wxT( "rectwaveguide_dark.png" ), -1, wxT( "dark" ) );
     aBitmapInfoCache[BITMAPS::regul].emplace_back( BITMAPS::regul, wxT( "regul_dark.png" ), -1, wxT( "dark" ) );
     aBitmapInfoCache[BITMAPS::regul_3pins].emplace_back( BITMAPS::regul_3pins, wxT( "regul_3pins_dark.png" ), -1, wxT( "dark" ) );
+    aBitmapInfoCache[BITMAPS::splash].emplace_back( BITMAPS::splash, wxT( "splash_dark.png" ), -1, wxT( "dark" ) );
     aBitmapInfoCache[BITMAPS::stripline].emplace_back( BITMAPS::stripline, wxT( "stripline_dark.png" ), -1, wxT( "dark" ) );
     aBitmapInfoCache[BITMAPS::stroke_dash].emplace_back( BITMAPS::stroke_dash, wxT( "stroke_dash_dark.png" ), -1, wxT( "dark" ) );
     aBitmapInfoCache[BITMAPS::stroke_dashdot].emplace_back( BITMAPS::stroke_dashdot, wxT( "stroke_dashdot_dark.png" ), -1, wxT( "dark" ) );

common/pgm_base.cpp

@@ -43,6 +43,7 @@
 #include <wx/tooltip.h>
 
 #include <advanced_config.h>
+#include <bitmaps.h>
 #include <cli/cli_names.h> // Needed for the pre wx 3.2 cli workaround
 #include <common.h>
 #include <config_params.h>
@@ -66,6 +67,8 @@
 #include <thread_pool.h>
 #include <trace_helpers.h>
 
+#include <wx/splash.h>
+
 #ifdef KICAD_USE_SENTRY
 #include <boost/uuid/uuid_io.hpp>
 #include <boost/uuid/uuid_generators.hpp>
@@ -130,6 +133,7 @@ PGM_BASE::PGM_BASE()
     m_Quitting = false;
     m_argcUtf8 = 0;
     m_argvUtf8 = nullptr;
+    m_splash = nullptr;
 
     setLanguageId( wxLANGUAGE_DEFAULT );
 
@@ -139,6 +143,7 @@ PGM_BASE::PGM_BASE()
 
 PGM_BASE::~PGM_BASE()
 {
+    HideSplash();
     Destroy();
 
     for( int n = 0; n < m_argcUtf8; n++ )
@@ -399,6 +404,28 @@ void PGM_BASE::BuildArgvUtf8()
 }
 
 
+void PGM_BASE::ShowSplash()
+{
+    if( m_splash )
+        return;
+
+    m_splash = new wxSplashScreen( KiBitmap( BITMAPS::splash ), wxSPLASH_CENTRE_ON_SCREEN, 0,
+                                    NULL, -1, wxDefaultPosition, wxDefaultSize, wxBORDER_NONE | wxSTAY_ON_TOP );
+    wxYield();
+}
+
+
+void PGM_BASE::HideSplash()
+{
+    if( !m_splash )
+        return;
+
+    m_splash->Close();
+    m_splash->Destroy();
+    m_splash = nullptr;
+}
+
+
 bool PGM_BASE::InitPgm( bool aHeadless, bool aSkipPyInit, bool aIsUnitTest )
 {
 #if defined( __WXMAC__ )
@@ -479,6 +506,9 @@ bool PGM_BASE::InitPgm( bool aHeadless, bool aSkipPyInit, bool aIsUnitTest )
     SetLanguagePath();
     SetDefaultLanguage( tmp );
 
+    if( !aHeadless )
+        ShowSplash();
+
     m_settings_manager = std::make_unique<SETTINGS_MANAGER>( aHeadless );
 
     // Our unit test mocks break if we continue

common/single_top.cpp

@@ -408,5 +408,7 @@ bool PGM_SINGLE_TOP::OnPgmInit()
         frame->OpenProjectFiles( fileArgs );
     }
 
+    HideSplash();
+
     return true;
 }

include/bitmaps/bitmaps_list.h

@@ -544,6 +544,7 @@ enum class BITMAPS : unsigned int
     small_up,
     small_warning,
     special_tools,
+    splash,
     spreadsheet,
     stripline,
     stroke_dash,

include/pgm_base.h

@@ -46,6 +46,7 @@ class wxSingleInstanceChecker;
 class wxApp;
 class wxMenu;
 class wxWindow;
+class wxSplashScreen;
 
 class COMMON_SETTINGS;
 class SETTINGS_MANAGER;
@@ -352,6 +353,10 @@ public:
      */
     bool IsGUI();
 
+
+    void ShowSplash();
+    void HideSplash();
+
     /**
      * wxWidgets on MSW tends to crash if you spool up more than one print job at a time.
      */
@@ -407,6 +412,8 @@ protected:
                                             /// and will return argv as either force converted to ascii in char* or wchar_t only
 
     int m_argcUtf8;
+
+    wxSplashScreen* m_splash;
 };
 
 

kicad/kicad.cpp

@@ -353,6 +353,8 @@ bool PGM_KICAD::OnPgmInit()
     frame->Show( true );
     frame->Raise();
 
+    HideSplash();
+
     return true;
 }
 

resources/bitmaps_png/CMakeLists.txt

@@ -636,6 +636,7 @@ set( BMAPS_OTHER
     creepage_clearance
     cpw
     cpw_back
+    light
     microstrip
     microstrip_zodd_zeven
     pads_npth
@@ -648,6 +649,7 @@ set( BMAPS_OTHER
     rectwaveguide
     regul
     regul_3pins
+    splash
     stripline
     stroke_dash
     stroke_dashdot