[gimp] Bug 575043 - GIMP ignores 'Maximized' windows hints on startup.

[Jehan Pagès <jehanp src gnome org>]

commit d13ed2a42bc2a56e6d928a17796ea2262876a312
Author: Jehan <jehan girinstud io>
Date:   Sun May 29 17:35:55 2016 +0200

    Bug 575043 - GIMP ignores 'Maximized' windows hints on startup.
    
    Now the max parameter from Windows is taken into account and takes
    precedence over the saved session state if set.
    This can be applied either through the "run" property of a shortcut,
    or by command line: `start /max gimp-2.9.exe`.
    There is a start for min handling as well but I can clearly see the
    window being minimized and immediately re-raised. There must be a call
    later which deiconifies the window. This will have to be fixed.

 app/display/gimpimagewindow.c |   37 +++++++++++++++++++++++++++++++++++--
 1 files changed, 35 insertions(+), 2 deletions(-)
---
diff --git a/app/display/gimpimagewindow.c b/app/display/gimpimagewindow.c
index 47baf91..a3d6e58 100644
--- a/app/display/gimpimagewindow.c
+++ b/app/display/gimpimagewindow.c
@@ -20,6 +20,12 @@
 #include <gegl.h>
 #include <gtk/gtk.h>
 
+#ifdef G_OS_WIN32
+#include <windef.h>
+#include <winbase.h>
+#include <windows.h>
+#endif
+
 #ifdef GDK_WINDOWING_QUARTZ
 #import <AppKit/AppKit.h>
 #include <gdk/gdkquartz.h>
@@ -1003,6 +1009,11 @@ gimp_image_window_set_aux_info (GimpSessionManaged *session_managed,
   gint                    right_docks_width     = G_MININT;
   gboolean                wait_with_right_docks = FALSE;
   gboolean                maximized             = FALSE;
+#ifdef G_OS_WIN32
+  STARTUPINFO             StartupInfo;
+
+  GetStartupInfo (&StartupInfo);
+#endif
 
   g_return_if_fail (GIMP_IS_IMAGE_WINDOW (session_managed));
 
@@ -1074,10 +1085,32 @@ gimp_image_window_set_aux_info (GimpSessionManaged *session_managed,
         }
     }
 
-  if (maximized)
+#ifdef G_OS_WIN32
+  /* On Windows, user can provide startup hints to have a program
+   * maximized/minimized on startup. This can be done through command
+   * line: `start /max gimp-2.9.exe` or with the shortcut's "run"
+   * property.
+   * When such a hint is given, we should follow it and bypass the
+   * session's information.
+   */
+  if (StartupInfo.wShowWindow == SW_SHOWMAXIMIZED)
     gtk_window_maximize (GTK_WINDOW (session_managed));
+  else if (StartupInfo.wShowWindow == SW_SHOWMINIMIZED   ||
+           StartupInfo.wShowWindow == SW_SHOWMINNOACTIVE ||
+           StartupInfo.wShowWindow == SW_MINIMIZE)
+    /* XXX Iconification does not seem to work. I see the
+     * window being iconified and immediately re-raised.
+     * I leave this piece of code for later improvement. */
+    gtk_window_iconify (GTK_WINDOW (session_managed));
   else
-    gtk_window_unmaximize (GTK_WINDOW (session_managed));
+    /* Another show property not relevant to min/max.
+     * Defaults is: SW_SHOWNORMAL
+     */
+#endif
+    if (maximized)
+      gtk_window_maximize (GTK_WINDOW (session_managed));
+    else
+      gtk_window_unmaximize (GTK_WINDOW (session_managed));
 }