Fix crash in wxDC::GetMultiLineTextExtent() after last commit.

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

diff --git a/src/gtk/dcscreen.cpp b/src/gtk/dcscreen.cpp
index a67ecf6720969e0838f2cbdb925a16d101a06cb9..0cf5e2a09781526819003e37090b658c3bab8ffa 100644 (file)
--- a/src/gtk/dcscreen.cpp
+++ b/src/gtk/dcscreen.cpp
@@ -1,122 +1,65 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        dcscreen.cpp
+// Name:        src/gtk/dcscreen.cpp
 // Purpose:
 // Author:      Robert Roebling
-// Created:     01/02/97
-// Id:
-// Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
-// Licence:    wxWindows licence
+// Id:          $Id$
+// Copyright:   (c) 1998 Robert Roebling
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#ifdef __GNUG__
-#pragma implementation "dcscreen.h"
-#endif
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
 
-#include "wx/dcscreen.h"
-#include "wx/window.h"
-#include "gdk/gdkx.h"
+#include "wx/gtk/dcscreen.h"
+
+#include <gtk/gtk.h>
 
 //-----------------------------------------------------------------------------
-// wxScreenDC
+// wxScreenDCImpl
 //-----------------------------------------------------------------------------
 
-IMPLEMENT_DYNAMIC_CLASS(wxScreenDC,wxPaintDC)
+IMPLEMENT_ABSTRACT_CLASS(wxScreenDCImpl, wxWindowDCImpl)
 
-wxScreenDC::wxScreenDC(void)
+wxScreenDCImpl::wxScreenDCImpl( wxScreenDC *owner )
+  : wxWindowDCImpl( owner )
 {
-  m_ok = FALSE;
-  m_window = NULL;
-  m_cmap = gdk_colormap_get_system();
-  
-  m_window = GDK_ROOT_PARENT();
-  
-  SetUpDC();
-  
-  gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
-  gdk_gc_set_subwindow( m_brushGC, GDK_INCLUDE_INFERIORS );
-  gdk_gc_set_subwindow( m_textGC, GDK_INCLUDE_INFERIORS );
-  gdk_gc_set_subwindow( m_bgGC, GDK_INCLUDE_INFERIORS );
+    Init();
 }
 
-wxScreenDC::~wxScreenDC(void)
+void wxScreenDCImpl::Init()
 {
-  EndDrawingOnTop();
-}
+    m_ok = false;
+    m_cmap = gdk_colormap_get_system();
+    m_gdkwindow = gdk_get_default_root_window();
 
-bool wxScreenDC::StartDrawingOnTop( wxWindow *WXUNUSED(window) )
-{
-  return TRUE;
-/*
-  if (!window)
-  {
-    StartDrawingOnTop();
-    return;
-  }
-  wxRectangle rect;
-  rect.x = 0;
-  rect.y = 0;
-  window->GetPosition( &rect.x, &rect.y );
-  rect.width = 0;
-  rect.height = 0;
-  window->GetSize( &rect.width, &rect.height );
-  window->ClientToScreen( &rect.x, &rect.y );
-  StartDrawingOnTop( &rect );
-  return TRUE;
-*/
-}
+    m_context = gdk_pango_context_get();
+    // Note: The Sun customised version of Pango shipping with Solaris 10
+    // crashes if the language is left NULL (see bug 1374114)
+    pango_context_set_language( m_context, gtk_get_default_language() );
+    m_layout = pango_layout_new( m_context );
+//    m_fontdesc = pango_font_description_copy( widget->style->font_desc );
 
-bool wxScreenDC::StartDrawingOnTop( wxRectangle *WXUNUSED(rect) )
-{
-  return TRUE;
-/*
-  int x = 0;
-  int y = 0;
-  int width = gdk_screen_width();
-  int height = gdk_screen_height();
-  if (rect)
-  {
-    x = rect->x;
-    y = rect->y;
-    width = rect->width;
-    height = rect->height;
-  }
-  
-  GTK cannot set transparent backgrounds. :-(
+    m_isScreenDC = true;
 
-  GdkWindowAttr attr;
-  attr.x = x;
-  attr.y = y;
-  attr.width = width;
-  attr.height = height;
-  attr.override_redirect = TRUE;
-  attr.wclass = GDK_INPUT_OUTPUT;
-  attr.event_mask = 0;
-  attr.window_type = GDK_WINDOW_TEMP;
-  m_window = gdk_window_new( NULL, &attr, GDK_WA_NOREDIR | GDK_WA_X | GDK_WA_Y );
-  
-  gdk_window_show( m_window );
+    SetUpDC();
 
-  m_window = GDK_ROOT_PARENT();
-  
-  SetUpDC();
-  
-  gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
-  gdk_gc_set_subwindow( m_brushGC, GDK_INCLUDE_INFERIORS );
-  gdk_gc_set_subwindow( m_textGC, GDK_INCLUDE_INFERIORS );
-  gdk_gc_set_subwindow( m_bgGC, GDK_INCLUDE_INFERIORS );
-
-  return TRUE;
-*/
+    gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
+    gdk_gc_set_subwindow( m_brushGC, GDK_INCLUDE_INFERIORS );
+    gdk_gc_set_subwindow( m_textGC, GDK_INCLUDE_INFERIORS );
+    gdk_gc_set_subwindow( m_bgGC, GDK_INCLUDE_INFERIORS );
 }
 
-bool wxScreenDC::EndDrawingOnTop(void)
+wxScreenDCImpl::~wxScreenDCImpl()
 {
-  return TRUE;
-/*
-  if (m_window) gdk_window_destroy( m_window );
-  m_window = NULL;
-  m_isOk = FALSE;
-  return TRUE;
-*/
+    g_object_unref(m_context);
+
+    gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
+    gdk_gc_set_subwindow( m_brushGC, GDK_CLIP_BY_CHILDREN );
+    gdk_gc_set_subwindow( m_textGC, GDK_CLIP_BY_CHILDREN );
+    gdk_gc_set_subwindow( m_bgGC, GDK_CLIP_BY_CHILDREN );
 }
 
+void wxScreenDCImpl::DoGetSize(int *width, int *height) const
+{
+    wxDisplaySize(width, height);
+}