don't give error messages if ws2_32.dll is not available in wxGetHostName()

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

diff --git a/src/gtk/dcclient.cpp b/src/gtk/dcclient.cpp
index 802358014e1c2ac4535748ec3848b1a5e8bee33d..d67e3cc0c004510f5993bede24f774bfae9259f9 100644 (file)
--- a/src/gtk/dcclient.cpp
+++ b/src/gtk/dcclient.cpp
@@ -191,7 +191,7 @@ static void wxInitGCPool()
         // If we cannot malloc, then fail with error
         // when debug is enabled.  If debug is not enabled,
         // the problem will eventually get caught
-               // in wxGetPoolGC.
+        // in wxGetPoolGC.
         wxFAIL_MSG( wxT("Cannot allocate GC pool") );
         return;
     }
@@ -237,13 +237,13 @@ static GdkGC* wxGetPoolGC( GdkWindow *window, wxPoolGCType type )
     // We did not find an available GC.
     // We need to grow the GC pool.
     pptr = (wxGC *)realloc(wxGCPool,
-               (wxGCPoolSize + GC_POOL_ALLOC_SIZE)*sizeof(wxGC));
+        (wxGCPoolSize + GC_POOL_ALLOC_SIZE)*sizeof(wxGC));
     if (pptr != NULL)
     {
         // Initialize newly allocated pool.
         wxGCPool = pptr;
-       memset(&wxGCPool[wxGCPoolSize], 0,
-                       GC_POOL_ALLOC_SIZE*sizeof(wxGC));
+        memset(&wxGCPool[wxGCPoolSize], 0,
+            GC_POOL_ALLOC_SIZE*sizeof(wxGC));
     
         // Initialize entry we will return.    
         wxGCPool[wxGCPoolSize].m_gc = gdk_gc_new( window );
@@ -773,6 +773,7 @@ void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoor
 
         if (m_pen.GetStyle() != wxTRANSPARENT)
         {
+/*
             for (i = 0 ; i < n ; i++)
             {
                 gdk_draw_line( m_window, m_penGC,
@@ -781,6 +782,9 @@ void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoor
                                gdkpoints[(i+1)%n].x,
                                gdkpoints[(i+1)%n].y);
             }
+*/
+            gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
+            
         }
     }
 
@@ -1270,11 +1274,14 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
         wxCoord bm_width = memDC->m_selected.GetWidth();
         wxCoord bm_height = memDC->m_selected.GetHeight();
 
-        // get clip coords
-        wxRegion tmp( xx,yy,ww,hh );
-        tmp.Intersect( m_currentClippingRegion );
-        wxCoord cx,cy,cw,ch;
-        tmp.GetBox(cx,cy,cw,ch);
+        // Get clip coords for the bitmap. If we don't
+        // use wxBitmap::Rescale(), which can clip the
+        // bitmap, these are the same as the original
+        // coordinates
+        wxCoord cx = xx;
+        wxCoord cy = yy;
+        wxCoord cw = ww;
+        wxCoord ch = hh;
         
         // interpret userscale of src too
         double xsc,ysc;
@@ -1285,16 +1292,23 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
         wxCoord bm_ww = XLOG2DEVREL( bm_width );
         wxCoord bm_hh = YLOG2DEVREL( bm_height );
 
-        // scale bitmap if required
+        // Scale bitmap if required
         wxBitmap use_bitmap;
-
         if ((bm_width != bm_ww) || (bm_height != bm_hh))
         {
-            use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);  
+            // This indicates that the blitting code below will get
+            // a clipped bitmap and therefore needs to move the origin
+            // accordingly
+            wxRegion tmp( xx,yy,ww,hh );
+            tmp.Intersect( m_currentClippingRegion );
+            tmp.GetBox(cx,cy,cw,ch);
+            
+            // Scale and clipped bitmap
+            use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
         }
         else
         {
-            // FIXME: use cx,cy,cw,ch here, too?
+            // Don't scale bitmap
             use_bitmap = memDC->m_selected;
         }
 
@@ -1463,7 +1477,7 @@ void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
 
     int w,h;
     
-    if (abs(m_scaleY - 1.0) < 0.00001)
+    if (fabs(m_scaleY - 1.0) < 0.00001)
     {
          // If there is a user or actually any scale applied to
          // the device context, scale the font.
@@ -2317,6 +2331,25 @@ int wxWindowDC::GetDepth() const
 
 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
 
+// Limit the paint region to the window size. Sometimes
+// the paint region is too big, and this risks X11 errors
+static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
+{
+    wxRect originalRect = region.GetBox();
+    wxRect rect(originalRect);
+    if (rect.width + rect.x > sz.x)
+        rect.width = sz.x - rect.x;
+    if (rect.height + rect.y > sz.y)
+        rect.height = sz.y - rect.y;
+    if (rect != originalRect)
+    {
+        region = wxRegion(rect);
+        wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
+                   originalRect.x, originalRect.y, originalRect.width, originalRect.height,
+                   rect.x, rect.y, rect.width, rect.height);
+    }
+}
+
 wxPaintDC::wxPaintDC( wxWindow *win )
          : wxClientDC( win )
 {
@@ -2324,21 +2357,23 @@ wxPaintDC::wxPaintDC( wxWindow *win )
     if (!win->m_clipPaintRegion)
         return;
 
+    wxSize sz = win->GetSize();
     m_paintClippingRegion = win->GetUpdateRegion();
+    wxLimitRegionToSize(m_paintClippingRegion, sz);
+    
     GdkRegion *region = m_paintClippingRegion.GetRegion();
     if ( region )
     {
-        m_paintClippingRegion = win->GetUpdateRegion();
-        GdkRegion *region = m_paintClippingRegion.GetRegion();
-        if ( region )
-        {
-            m_currentClippingRegion.Union( m_paintClippingRegion );
+        m_currentClippingRegion.Union( m_paintClippingRegion );
+        wxLimitRegionToSize(m_currentClippingRegion, sz);
 
-            gdk_gc_set_clip_region( m_penGC, region );
-            gdk_gc_set_clip_region( m_brushGC, region );
-            gdk_gc_set_clip_region( m_textGC, region );
-            gdk_gc_set_clip_region( m_bgGC, region );
-        }
+        if (sz.x <= 0 || sz.y <= 0)
+            return ;
+
+        gdk_gc_set_clip_region( m_penGC, region );
+        gdk_gc_set_clip_region( m_brushGC, region );
+        gdk_gc_set_clip_region( m_textGC, region );
+        gdk_gc_set_clip_region( m_bgGC, region );
     }
 #endif // USE_PAINT_REGION
 }