X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4f55a07f9f4c6ba6905aaa8e584e6fb14771d278..7152f0c68dfb73bad2a3dd0304f3723c18c9a668:/src/gtk1/dcclient.cpp

diff --git a/src/gtk1/dcclient.cpp b/src/gtk1/dcclient.cpp
index 8a507fb23a..5cb5431280 100644
--- a/src/gtk1/dcclient.cpp
+++ b/src/gtk1/dcclient.cpp
@@ -246,6 +246,8 @@ wxWindowDC::wxWindowDC()
 
 wxWindowDC::wxWindowDC( wxWindow *window )
 {
+    wxASSERT_MSG( window, wxT("DC needs a window") );
+
     m_penGC = (GdkGC *) NULL;
     m_brushGC = (GdkGC *) NULL;
     m_textGC = (GdkGC *) NULL;
@@ -256,8 +258,6 @@ wxWindowDC::wxWindowDC( wxWindow *window )
     m_isScreenDC = FALSE;
     m_font = window->GetFont();
 
-    wxASSERT_MSG( window, wxT("DC needs a window") );
-
     GtkWidget *widget = window->m_wxwindow;
 
     // some controls don't have m_wxwindow - like wxStaticBox, but the user
@@ -1090,7 +1090,8 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
                          wxDC *source,
                          wxCoord xsrc, wxCoord ysrc,
                          int logical_func,
-                         bool useMask )
+                         bool useMask,
+                         wxCoord xsrcMask, wxCoord ysrcMask )
 {
    /* this is the nth try to get this utterly useless function to
       work. it now completely ignores the scaling or translation
@@ -1103,10 +1104,10 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
 
     if (!m_window) return FALSE;
 
-#if 0
+#if 1
     // transform the source DC coords to the device ones
-    xsrc = XLOG2DEV(xsrc);
-    ysrc = YLOG2DEV(ysrc);
+    xsrc = source->XLOG2DEV(xsrc);
+    ysrc = source->YLOG2DEV(ysrc);
 #endif
 
     wxClientDC *srcDC = (wxClientDC*)source;
@@ -1115,6 +1116,12 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
     bool use_bitmap_method = FALSE;
     bool is_mono = FALSE;
 
+    /* TODO: use the mask origin when drawing transparently */
+    if (xsrcMask == -1 && ysrcMask == -1)
+    {
+        xsrcMask = xsrc; ysrcMask = ysrc;
+    }
+
     if (srcDC->m_isMemDC)
     {
         if (!memDC->m_selected.Ok()) return FALSE;
@@ -1351,11 +1358,11 @@ void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
     y = YLOG2DEV(y);
 
 #if defined(__WXGTK20__) && wxUSE_WCHAR_T
-    /* FIXME: the layout engine should probably be abstracted at a higher level in wxDC... */
+    // TODO: the layout engine should be abstracted at a higher level!
     PangoLayout *layout = pango_layout_new(m_context);
     pango_layout_set_font_description(layout, m_fontdesc);
     {
-        wxWX2MBbuf data = text.mb_str(wxConvUTF8);
+        const wxWX2MBbuf data = text.mb_str(wxConvUTF8);
         pango_layout_set_text(layout, data, strlen(data));
     }
     PangoLayoutLine *line = (PangoLayoutLine *)pango_layout_get_lines(layout)->data;
@@ -1364,18 +1371,18 @@ void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
     wxCoord width = rect.width;
     wxCoord height = rect.height;
     gdk_draw_layout( m_window, m_textGC, x, y, layout );
-#else
+#else // GTK+ 1.x
     wxCoord width = gdk_string_width( font, text.mbc_str() );
     wxCoord height = font->ascent + font->descent;
-    /* CMB 21/5/98: draw text background if mode is wxSOLID */
-    if (m_backgroundMode == wxSOLID)
+
+    if ( m_backgroundMode == wxSOLID )
     {
         gdk_gc_set_foreground( m_textGC, m_textBackgroundColour.GetColor() );
         gdk_draw_rectangle( m_window, m_textGC, TRUE, x, y, width, height );
         gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
     }
     gdk_draw_string( m_window, font, m_textGC, x, y + font->ascent, text.mbc_str() );
-#endif
+#endif // GTK+ 2.0/1.x
 
     /* CMB 17/7/98: simple underline: ignores scaling and underlying
        X font's XA_UNDERLINE_POSITION and XA_UNDERLINE_THICKNESS
@@ -1426,7 +1433,6 @@ void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y,
     dc.SetBrush(*wxBLACK_BRUSH);
     dc.Clear();
     dc.DrawText(text, 0, 0);
-    dc.SetFont(wxNullFont);
     dc.SelectObject(wxNullBitmap);
 
     // Calculate the size of the rotated bounding box.
@@ -1573,6 +1579,8 @@ void wxWindowDC::Clear()
 
 void wxWindowDC::SetFont( const wxFont &font )
 {
+    wxCHECK_RET( font.Ok(), _T("invalid font in wxWindowDC::SetFont") );
+
     m_font = font;
 #ifdef __WXGTK20__
     // fix fontdesc?
@@ -1871,30 +1879,36 @@ void wxWindowDC::SetTextForeground( const wxColour &col )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
-    if (m_textForegroundColour == col) return;
+    // don't set m_textForegroundColour to an invalid colour as we'd crash
+    // later then (we use m_textForegroundColour.GetColor() without checking
+    // in a few places)
+    if ( !col.Ok() || (m_textForegroundColour == col) )
+        return;
 
     m_textForegroundColour = col;
-    if (!m_textForegroundColour.Ok()) return;
 
-    if (!m_window) return;
-
-    m_textForegroundColour.CalcPixel( m_cmap );
-    gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
+    if ( m_window )
+    {
+        m_textForegroundColour.CalcPixel( m_cmap );
+        gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
+    }
 }
 
 void wxWindowDC::SetTextBackground( const wxColour &col )
 {
     wxCHECK_RET( Ok(), wxT("invalid window dc") );
 
-    if (m_textBackgroundColour == col) return;
+    // same as above
+    if ( !col.Ok() || (m_textBackgroundColour == col) )
+        return;
 
     m_textBackgroundColour = col;
-    if (!m_textBackgroundColour.Ok()) return;
 
-    if (!m_window) return;
-
-    m_textBackgroundColour.CalcPixel( m_cmap );
-    gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
+    if ( m_window )
+    {
+        m_textBackgroundColour.CalcPixel( m_cmap );
+        gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
+    }
 }
 
 void wxWindowDC::SetBackgroundMode( int mode )