fix another memory leak in SetCommand() (coverity checker CID 52)

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

diff --git a/src/motif/dcscreen.cpp b/src/motif/dcscreen.cpp
index 7a082816389d2b49f822a619f3305aa95f558132..762a7401019aed02df95785a8da6b54531520119 100644 (file)
--- a/src/motif/dcscreen.cpp
+++ b/src/motif/dcscreen.cpp
@@ -9,41 +9,125 @@
 // Licence:    wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#ifdef __GNUG__
-#pragma implementation "dcscreen.h"
-#endif
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
 
+#include "wx/window.h"
+#include "wx/frame.h"
 #include "wx/dcscreen.h"
+#include "wx/utils.h"
 
-#if !USE_SHARED_LIBRARY
-IMPLEMENT_DYNAMIC_CLASS(wxScreenDC, wxWindowDC)
+#ifdef __VMS__
+#pragma message disable nosimpint
 #endif
+#include <Xm/Xm.h>
+#ifdef __VMS__
+#pragma message enable nosimpint
+#endif
+
+#include "wx/motif/private.h"
+
+IMPLEMENT_DYNAMIC_CLASS(wxScreenDC, wxWindowDC)
+
+WXWindow wxScreenDC::sm_overlayWindow = 0;
+int wxScreenDC::sm_overlayWindowX = 0;
+int wxScreenDC::sm_overlayWindowY = 0;
 
 // Create a DC representing the whole screen
 wxScreenDC::wxScreenDC()
 {
-    // TODO
+    m_display = wxGetDisplay();
+    Display* display = (Display*) m_display;
+    
+    if (sm_overlayWindow)
+    {
+        m_pixmap = sm_overlayWindow;
+        m_deviceOriginX = - sm_overlayWindowX;
+        m_deviceOriginY = - sm_overlayWindowY;
+    }
+    else
+        m_pixmap = (WXPixmap) RootWindow(display, DefaultScreen(display));
+    
+    XGCValues gcvalues;
+    gcvalues.foreground = BlackPixel (display, DefaultScreen (display));
+    gcvalues.background = WhitePixel (display, DefaultScreen (display));
+    gcvalues.graphics_exposures = False;
+    gcvalues.subwindow_mode = IncludeInferiors;
+    gcvalues.line_width = 1;
+    m_gc = XCreateGC (display, RootWindow (display, DefaultScreen (display)),
+        GCForeground | GCBackground | GCGraphicsExposures | GCLineWidth | GCSubwindowMode,
+        &gcvalues);
+    
+    m_backgroundPixel = (int) gcvalues.background;
+    m_ok = true;
 }
 
 wxScreenDC::~wxScreenDC()
 {
-    // TODO
+    EndDrawingOnTop();
 }
 
 bool wxScreenDC::StartDrawingOnTop(wxWindow* window)
 {
-    // TODO
-    return FALSE;
+    wxRect rect;
+    int x, y, width, height;
+    window->GetPosition(& x, & y);
+    if (window->GetParent() && !window->IsKindOf(CLASSINFO(wxFrame)))
+        window->GetParent()->ClientToScreen(& x, & y);
+    window->GetSize(& width, & height);
+    rect.x = x; rect.y = y;
+    rect.width = width; rect.height = height;
+    
+    return StartDrawingOnTop(& rect);
 }
 
-bool wxScreenDC::StartDrawingOnTop(wxRect* rect = NULL)
+bool wxScreenDC::StartDrawingOnTop(wxRect* rect)
 {
-    // TODO
-    return FALSE;
+    if (sm_overlayWindow)
+        return false;
+    
+    Display *dpy = (Display*) wxGetDisplay();
+    Pixmap screenPixmap = RootWindow(dpy, DefaultScreen(dpy));
+    
+    int x = 0;
+    int y = 0;
+    int width, height;
+    wxDisplaySize(&width, &height);
+    
+    if (rect)
+    {
+        x = rect->x; y = rect->y;
+        width = rect->width; height = rect->height;
+    }
+    sm_overlayWindowX = x;
+    sm_overlayWindowY = y;
+    
+    XSetWindowAttributes attributes;
+    attributes.override_redirect = True;
+    unsigned long valueMask = CWOverrideRedirect;
+    
+    sm_overlayWindow = (WXWindow) XCreateWindow(dpy, screenPixmap, x, y, width, height, 0,
+        wxDisplayDepth(), InputOutput,
+        DefaultVisual(dpy, 0), valueMask,
+        & attributes);
+    
+    if (sm_overlayWindow)
+    {
+        XMapWindow(dpy, (Window) sm_overlayWindow);
+        return true;
+    }
+    else
+        return false;
 }
 
 bool wxScreenDC::EndDrawingOnTop()
 {
-    // TODO
-    return TRUE;
+    if (sm_overlayWindow)
+    {
+        XDestroyWindow((Display*) wxGetDisplay(), (Window) sm_overlayWindow);
+        sm_overlayWindow = 0;
+        return true;
+    }
+    else
+        return false;
 }