X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f87d0500fa6211da6eca95077789c5c55185ee56..01705e98c13137aa667da6c580d14c0ea1b98713:/src/dfb/dc.cpp

diff --git a/src/dfb/dc.cpp b/src/dfb/dc.cpp
index 5c44c092d4..8093bec3d2 100644
--- a/src/dfb/dc.cpp
+++ b/src/dfb/dc.cpp
@@ -25,6 +25,7 @@
 
 #ifndef WX_PRECOMP
     #include "wx/dc.h"
+    #include "wx/dcmemory.h"
     #include "wx/log.h"
 #endif
 
@@ -53,10 +54,10 @@ wxDC::wxDC()
 
 wxDC::wxDC(const wxIDirectFBSurfacePtr& surface)
 {
-    Init(surface);
+    DFBInit(surface);
 }
 
-void wxDC::Init(const wxIDirectFBSurfacePtr& surface)
+void wxDC::DFBInit(const wxIDirectFBSurfacePtr& surface)
 {
     m_ok = (surface != NULL);
     wxCHECK_RET( surface != NULL, _T("invalid surface") );
@@ -180,8 +181,32 @@ void wxDC::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
     if ( m_pen.GetStyle() == wxTRANSPARENT )
         return;
 
-    m_surface->DrawLine(XLOG2DEV(x1), YLOG2DEV(y1),
-                        XLOG2DEV(x2), YLOG2DEV(y2));
+    wxCoord xx1 = XLOG2DEV(x1);
+    wxCoord yy1 = YLOG2DEV(y1);
+    wxCoord xx2 = XLOG2DEV(x2);
+    wxCoord yy2 = YLOG2DEV(y2);
+
+    // FIXME: DrawLine() shouldn't draw the last pixel, but DFB's DrawLine()
+    //        does draw it. We should undo any change to the last pixel by
+    //        using GetPixel() and PutPixel(), but until they are implemented,
+    //        handle at least the special case of vertical and horizontal
+    //        lines correctly:
+    if ( xx1 == xx2 )
+    {
+        if ( yy1 < yy2 )
+            yy2--;
+        else if ( yy1 > yy2 )
+            yy2++;
+    }
+    if ( yy1 == yy2 )
+    {
+        if ( xx1 < xx2 )
+            xx2--;
+        else if ( xx1 > xx2 )
+            xx2++;
+    }
+
+    m_surface->DrawLine(xx1, yy1, xx2, yy2);
 
     CalcBoundingBox(x1, y1);
     CalcBoundingBox(x2, y2);
@@ -366,10 +391,21 @@ void wxDC::SetFont(const wxFont& font)
 
     wxFont f(font.Ok() ? font : DEFAULT_FONT);
 
-    if ( !m_surface->SetFont(f.GetDirectFBFont()) )
-        return;
+    wxFont oldfont(m_font);
 
     m_font = f;
+
+    if ( !m_surface->SetFont(GetCurrentFont()) )
+    {
+        m_font = oldfont;
+        return;
+    }
+}
+
+wxIDirectFBFontPtr wxDC::GetCurrentFont() const
+{
+    bool aa = (GetDepth() > 8);
+    return m_font.GetDirectFBFont(aa);
 }
 
 void wxDC::SetBackground(const wxBrush& brush)
@@ -426,7 +462,7 @@ wxCoord wxDC::GetCharHeight() const
     wxCHECK_MSG( m_font.Ok(), -1, wxT("no font selected") );
 
     int h = -1;
-    m_font.GetDirectFBFont()->GetHeight(&h);
+    GetCurrentFont()->GetHeight(&h);
     return YDEV2LOGREL(h);
 }
 
@@ -436,7 +472,7 @@ wxCoord wxDC::GetCharWidth() const
     wxCHECK_MSG( m_font.Ok(), -1, wxT("no font selected") );
 
     int w = -1;
-    m_font.GetDirectFBFont()->GetStringWidth("H", 1, &w);
+    GetCurrentFont()->GetStringWidth("H", 1, &w);
     // VS: YDEV is corrent, it should *not* be XDEV, because font's are only
     //     scaled according to m_scaleY
     return YDEV2LOGREL(w);
@@ -459,7 +495,7 @@ void wxDC::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y,
 
     wxCoord xx = 0, yy = 0;
     DFBRectangle rect;
-    wxIDirectFBFontPtr f = m_font.GetDirectFBFont();
+    wxIDirectFBFontPtr f = GetCurrentFont();
 
     if ( f->GetStringExtents(wxSTR_TO_DFB(string), -1, &rect, NULL) )
     {
@@ -757,6 +793,16 @@ bool wxDC::DoBlitFromSurface(const wxIDirectFBSurfacePtr& src,
                              wxCoord w, wxCoord h,
                              wxCoord dstx, wxCoord dsty)
 {
+    // don't do anything if the source rectangle is outside of source surface,
+    // DirectFB would assert in that case:
+    wxSize srcsize;
+    src->GetSize(&srcsize.x, &srcsize.y);
+    if ( !wxRect(srcx, srcy, w, h).Intersects(wxRect(srcsize)) )
+    {
+        wxLogDebug(_T("Blitting from area outside of the source surface, caller code needs fixing."));
+        return false;
+    }
+
     CalcBoundingBox(dstx, dsty);
     CalcBoundingBox(dstx + w, dsty + h);