rewrite to avoid unnecessary redraws

[wxWidgets.git] / src / motif / app.cpp

diff --git a/src/motif/app.cpp b/src/motif/app.cpp
index c8b0dff7042fbbadcdae01751589e7caaec6c599..fa1fd15f66d814f5f548ab8b5aa2ecf2f55cd137 100644 (file)
--- a/src/motif/app.cpp
+++ b/src/motif/app.cpp
@@ -10,7 +10,12 @@
 /////////////////////////////////////////////////////////////////////////////
 
 #ifdef __GNUG__
 /////////////////////////////////////////////////////////////////////////////
 
 #ifdef __GNUG__

-#pragma implementation "app.h"
+    #pragma implementation "app.h"
+#endif
+
+#ifdef __VMS
+#define XtParent XTPARENT
+#define XtDisplay XTDISPLAY

 #endif
 
 #include "wx/frame.h"
 #endif
 
 #include "wx/frame.h"


@@ -28,18 +33,28 @@
 #include "wx/log.h"
 #include "wx/module.h"
 #include "wx/memory.h"
 #include "wx/log.h"
 #include "wx/module.h"
 #include "wx/memory.h"

+#include "wx/log.h"
+#include "wx/intl.h"

 
 

-#include "wx/thread.h"
+#if wxUSE_THREADS
+    #include "wx/thread.h"
+#endif

 
 #if wxUSE_WX_RESOURCES
     #include "wx/resource.h"
 #endif
 
 
 #if wxUSE_WX_RESOURCES
     #include "wx/resource.h"
 #endif
 

+#ifdef __VMS__
+#pragma message disable nosimpint
+#endif

 #include <Xm/Xm.h>
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
 #include <X11/Xresource.h>
 #include <X11/Xatom.h>
 #include <Xm/Xm.h>
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
 #include <X11/Xresource.h>
 #include <X11/Xatom.h>

+#ifdef __VMS__
+#pragma message enable nosimpint
+#endif

 
 #include "wx/motif/private.h"
 
 
 #include "wx/motif/private.h"
 


@@ -52,13 +67,23 @@ wxApp *wxTheApp = NULL;
 
 wxHashTable *wxWidgetHashTable = NULL;
 
 
 wxHashTable *wxWidgetHashTable = NULL;
 

-#if !USE_SHARED_LIBRARY

 IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 
 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
     EVT_IDLE(wxApp::OnIdle)
 END_EVENT_TABLE()
 IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 
 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
     EVT_IDLE(wxApp::OnIdle)
 END_EVENT_TABLE()

-#endif
+
+#ifdef __WXDEBUG__
+    typedef int (*XErrorHandlerFunc)(Display *, XErrorEvent *);
+
+    XErrorHandlerFunc gs_pfnXErrorHandler = 0;
+
+    static int wxXErrorHandler(Display *dpy, XErrorEvent *xevent)
+    {
+        // just forward to the default handler for now
+        return gs_pfnXErrorHandler(dpy, xevent);
+    }
+#endif // __WXDEBUG__

 
 long wxApp::sm_lastMessageTime = 0;
 
 
 long wxApp::sm_lastMessageTime = 0;
 


@@ -68,6 +93,12 @@ bool wxApp::Initialize()
 
     wxClassInfo::InitializeClasses();
 
 
     wxClassInfo::InitializeClasses();
 

+    // GL: I'm annoyed ... I don't know where to put this and I don't want to
+    // create a module for that as it's part of the core.
+#if wxUSE_THREADS
+    wxPendingEventsLocker = new wxCriticalSection();
+#endif
+

     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
     wxTheColourDatabase->Initialize();
 
     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
     wxTheColourDatabase->Initialize();
 


@@ -145,6 +176,13 @@ void wxApp::CleanUp()
     delete wxTheApp;
     wxTheApp = NULL;
 
     delete wxTheApp;
     wxTheApp = NULL;
 

+    // GL: I'm annoyed ... I don't know where to put this and I don't want to
+    // create a module for that as it's part of the core.
+#if wxUSE_THREADS
+    delete wxPendingEvents;
+    delete wxPendingEventsLocker;
+#endif
+

 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
     // At this point we want to check if there are any memory
     // blocks that aren't part of the wxDebugContext itself,
 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
     // At this point we want to check if there are any memory
     // blocks that aren't part of the wxDebugContext itself,


@@ -205,9 +243,8 @@ int wxEntry( int argc, char *argv[] )
     // GUI-specific initialization, such as creating an app context.
     wxTheApp->OnInitGui();
 
     // GUI-specific initialization, such as creating an app context.
     wxTheApp->OnInitGui();
 

-    // Here frames insert themselves automatically
-    // into wxTopLevelWindows by getting created
-    // in OnInit().
+    // Here frames insert themselves automatically into wxTopLevelWindows by
+    // getting created in OnInit().

 
     int retValue = 0;
     if (wxTheApp->OnInit())
 
     int retValue = 0;
     if (wxTheApp->OnInit())


@@ -239,7 +276,7 @@ int wxEntry( int argc, char *argv[] )
 };
 
 // Static member initialization
 };
 
 // Static member initialization

-wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
+wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;

 
 wxApp::wxApp()
 {
 
 wxApp::wxApp()
 {


@@ -250,9 +287,7 @@ wxApp::wxApp()
     m_appName = "";
     argc = 0;
     argv = NULL;
     m_appName = "";
     argc = 0;
     argv = NULL;

-    m_printMode = wxPRINT_POSTSCRIPT;

     m_exitOnFrameDelete = TRUE;
     m_exitOnFrameDelete = TRUE;

-    m_auto3D = TRUE;

 
     m_mainColormap = (WXColormap) NULL;
     m_appContext = (WXAppContext) NULL;
 
     m_mainColormap = (WXColormap) NULL;
     m_appContext = (WXAppContext) NULL;


@@ -297,11 +332,13 @@ int wxApp::MainLoop()
         {
             if (!ProcessIdle())
             {
         {
             if (!ProcessIdle())
             {

+#if wxUSE_THREADS

                 // leave the main loop to give other threads a chance to
                 // perform their GUI work
                 wxMutexGuiLeave();
                 wxUsleep(20);
                 wxMutexGuiEnter();
                 // leave the main loop to give other threads a chance to
                 // perform their GUI work
                 wxMutexGuiLeave();
                 wxUsleep(20);
                 wxMutexGuiEnter();

+#endif

             }
         }
 
             }
         }
 


@@ -315,10 +352,51 @@ void wxApp::ProcessXEvent(WXEvent* _event)
 {
     XEvent* event = (XEvent*) _event;
 
 {
     XEvent* event = (XEvent*) _event;
 

-    if ((event->type == KeyPress) && CheckForAccelerator(_event))
+    if (event->type == KeyPress)

     {
     {

-        // Do nothing! We intercepted and processed the event as an accelerator.
-        return;
+#if 0 // def __WXDEBUG__
+        Widget widget = XtWindowToWidget(event->xany.display, event->xany.window);
+        wxLogDebug("Got key press event for 0x%08x (parent = 0x%08x)",
+                   widget, XtParent(widget));
+#endif // DEBUG
+
+       if (CheckForAccelerator(_event))
+       {
+            // Do nothing! We intercepted and processed the event as an
+            // accelerator.
+            return;
+       }
+#if 1
+        // It seemed before that this hack was redundant and
+        // key down events were being generated by wxCanvasInputEvent.
+        // But no longer - why ???
+        //
+       else if (CheckForKeyDown(_event))
+       {
+            // We intercepted and processed the key down event
+            return;
+       }
+#endif
+       else
+       {
+            XtDispatchEvent(event);
+           return;
+       }
+    }
+    else if (event->type == KeyRelease)
+    {
+        // TODO: work out why we still need this !  -michael
+        //
+        if (CheckForKeyUp(_event))
+       {
+           // We intercepted and processed the key up event
+           return;
+       }
+       else
+       {
+           XtDispatchEvent(event);
+           return;
+       }

     }
     else if (event->type == PropertyNotify)
     {
     }
     else if (event->type == PropertyNotify)
     {


@@ -327,10 +405,10 @@ void wxApp::ProcessXEvent(WXEvent* _event)
     }
     else if (event->type == ResizeRequest)
     {
     }
     else if (event->type == ResizeRequest)
     {

-    /* Terry Gitnick <terryg@scientech.com> - 1/21/98
-    * If resize event, don't resize until the last resize event for this
-    * window is recieved. Prevents flicker as windows are resized.
-        */
+        /* Terry Gitnick <terryg@scientech.com> - 1/21/98
+         * If resize event, don't resize until the last resize event for this
+         * window is recieved. Prevents flicker as windows are resized.
+         */

 
         Display *disp = XtDisplay((Widget) wxTheApp->GetTopLevelWidget());
         Window win = event->xany.window;
 
         Display *disp = XtDisplay((Widget) wxTheApp->GetTopLevelWidget());
         Window win = event->xany.window;


@@ -404,6 +482,18 @@ void wxApp::OnIdle(wxIdleEvent& event)
 
     inOnIdle = TRUE;
 
 
     inOnIdle = TRUE;
 

+    // If there are pending events, we must process them: pending events
+    // are either events to the threads other than main or events posted
+    // with wxPostEvent() functions
+    // GRG: I have moved this here so that all pending events are processed
+    //   before starting to delete any objects. This behaves better (in
+    //   particular, wrt wxPostEvent) and is coherent with wxGTK's current
+    //   behaviour. Also removed the '#if wxUSE_THREADS' around it.
+    //  Changed Mar/2000 before 2.1.14
+
+    // Flush pending events.
+    ProcessPendingEvents();
+

     // 'Garbage' collection of windows deleted with Close().
     DeletePendingObjects();
 
     // 'Garbage' collection of windows deleted with Close().
     DeletePendingObjects();
 


@@ -421,19 +511,27 @@ void wxApp::OnIdle(wxIdleEvent& event)
     inOnIdle = FALSE;
 }
 
     inOnIdle = FALSE;
 }
 

+void wxWakeUpIdle()
+{
+    // **** please implement me! ****
+    // Wake up the idle handler processor, even if it is in another thread...
+}
+
+

 // Send idle event to all top-level windows
 bool wxApp::SendIdleEvents()
 {
     bool needMore = FALSE;
 // Send idle event to all top-level windows
 bool wxApp::SendIdleEvents()
 {
     bool needMore = FALSE;

-    wxNode* node = wxTopLevelWindows.First();
+
+    wxWindowList::Node* node = wxTopLevelWindows.GetFirst();

     while (node)
     {
     while (node)
     {

-        wxWindow* win = (wxWindow*) node->Data();
+        wxWindow* win = node->GetData();

         if (SendIdleEvents(win))
             needMore = TRUE;
         if (SendIdleEvents(win))
             needMore = TRUE;

-
-        node = node->Next();
+        node = node->GetNext();

     }
     }

+

     return needMore;
 }
 
     return needMore;
 }
 


@@ -479,21 +577,6 @@ void wxApp::DeletePendingObjects()
     }
 }
 
     }
 }
 

-wxLog* wxApp::CreateLogTarget()
-{
-    return new wxLogGui;
-}
-
-wxWindow* wxApp::GetTopWindow() const
-{
-    if (m_topWindow)
-        return m_topWindow;
-    else if (wxTopLevelWindows.Number() > 0)
-        return (wxWindow*) wxTopLevelWindows.First()->Data();
-    else
-        return NULL;
-}
-

 // Create an application context
 bool wxApp::OnInitGui()
 {
 // Create an application context
 bool wxApp::OnInitGui()
 {


@@ -509,12 +592,18 @@ bool wxApp::OnInitGui()
         argv);
 
     if (!dpy) {
         argv);
 
     if (!dpy) {

+        wxString className(wxTheApp->GetClassName());

         wxLogError(_("wxWindows could not open display for '%s': exiting."),
         wxLogError(_("wxWindows could not open display for '%s': exiting."),

-                   wxTheApp->GetClassName());
+                   (const char*) className);

         exit(-1);
     }
     m_initialDisplay = (WXDisplay*) dpy;
 
         exit(-1);
     }
     m_initialDisplay = (WXDisplay*) dpy;
 

+#ifdef __WXDEBUG__
+    // install the X error handler
+    gs_pfnXErrorHandler = XSetErrorHandler(wxXErrorHandler);
+#endif // __WXDEBUG__
+

     wxTheApp->m_topLevelWidget = (WXWidget) XtAppCreateShell((String)NULL, (const char*) wxTheApp->GetClassName(),
         applicationShellWidgetClass,dpy,
         NULL,0) ;
     wxTheApp->m_topLevelWidget = (WXWidget) XtAppCreateShell((String)NULL, (const char*) wxTheApp->GetClassName(),
         applicationShellWidgetClass,dpy,
         NULL,0) ;


@@ -582,6 +671,56 @@ bool wxApp::CheckForAccelerator(WXEvent* event)
     return FALSE;
 }
 
     return FALSE;
 }
 

+bool wxApp::CheckForKeyDown(WXEvent* event)
+{
+    XEvent* xEvent = (XEvent*) event;
+    if (xEvent->xany.type == KeyPress)
+    {
+        Widget widget = XtWindowToWidget((Display*) wxGetDisplay(),
+                                        xEvent->xany.window);
+       wxWindow* win = NULL;
+
+       // Find the first wxWindow that corresponds to this event window
+       while (widget && !(win = wxGetWindowFromTable(widget)))
+            widget = XtParent(widget);
+
+       if (!widget || !win)
+            return FALSE;
+
+       wxKeyEvent keyEvent(wxEVT_KEY_DOWN);
+       wxTranslateKeyEvent(keyEvent, win, (Widget) 0, xEvent);
+
+       return win->ProcessEvent( keyEvent );
+    }
+
+    return FALSE;
+}
+
+bool wxApp::CheckForKeyUp(WXEvent* event)
+{
+    XEvent* xEvent = (XEvent*) event;
+    if (xEvent->xany.type == KeyRelease)
+    {
+        Widget widget = XtWindowToWidget((Display*) wxGetDisplay(),
+                                        xEvent->xany.window);
+       wxWindow* win = NULL;
+
+       // Find the first wxWindow that corresponds to this event window
+       while (widget && !(win = wxGetWindowFromTable(widget)))
+            widget = XtParent(widget);
+
+       if (!widget || !win)
+            return FALSE;
+
+       wxKeyEvent keyEvent(wxEVT_KEY_UP);
+       wxTranslateKeyEvent(keyEvent, win, (Widget) 0, xEvent);
+
+       return win->ProcessEvent( keyEvent );
+    }
+
+    return FALSE;
+}
+

 void wxExit()
 {
     int retValue = 0;
 void wxExit()
 {
     int retValue = 0;


@@ -597,8 +736,18 @@ void wxExit()
 }
 
 // Yield to other processes
 }
 
 // Yield to other processes

+
+static bool gs_inYield = FALSE;
+

 bool wxYield()
 {
 bool wxYield()
 {

+#ifdef __WXDEBUG__    
+    if (gs_inYield)
+        wxFAIL_MSG( wxT("wxYield called recursively" ) );
+#endif
+    
+    gs_inYield = TRUE;
+

     while (wxTheApp && wxTheApp->Pending())
         wxTheApp->Dispatch();
 
     while (wxTheApp && wxTheApp->Pending())
         wxTheApp->Dispatch();
 


@@ -607,6 +756,56 @@ bool wxYield()
     XtAppProcessEvent((XtAppContext) wxTheApp->GetAppContext(), XtIMAll);
 #endif
 
     XtAppProcessEvent((XtAppContext) wxTheApp->GetAppContext(), XtIMAll);
 #endif
 

+    gs_inYield = FALSE;
+

     return TRUE;
 }
 
     return TRUE;
 }
 

+// Yield to incoming messages; but fail silently if recursion is detected.
+bool wxYieldIfNeeded()
+{
+    if (gs_inYield)
+        return FALSE;
+        
+    return wxYield();
+}
+
+
+// TODO use XmGetPixmap (?) to get the really standard icons!
+
+#include "wx/generic/info.xpm"
+#include "wx/generic/error.xpm"
+#include "wx/generic/question.xpm"
+#include "wx/generic/warning.xpm"
+
+wxIcon
+wxApp::GetStdIcon(int which) const
+{
+    switch(which)
+    {
+        case wxICON_INFORMATION:
+            return wxIcon(info_xpm);
+
+        case wxICON_QUESTION:
+            return wxIcon(question_xpm);
+
+        case wxICON_EXCLAMATION:
+            return wxIcon(warning_xpm);
+
+        default:
+            wxFAIL_MSG("requested non existent standard icon");
+            // still fall through
+
+        case wxICON_HAND:
+            return wxIcon(error_xpm);
+    }
+}
+
+// ----------------------------------------------------------------------------
+// accessors for C modules
+// ----------------------------------------------------------------------------
+
+extern "C" XtAppContext wxGetAppContext()
+{
+    return (XtAppContext)wxTheApp->GetAppContext();
+}