add support for alpha in color dialog on OSX, see #14127

[wxWidgets.git] / src / x11 / dcclient.cpp

diff --git a/src/x11/dcclient.cpp b/src/x11/dcclient.cpp
index 316dd68cf15bf40e3363008327ed7655569fba3c..46a9657a2400855bdca8d77d17ffdefb8b35adec 100644 (file)
--- a/src/x11/dcclient.cpp
+++ b/src/x11/dcclient.cpp
@@ -621,7 +621,7 @@ void wxWindowDCImpl::DoDrawPoint( wxCoord x, wxCoord y )
     CalcBoundingBox (x, y);
 }
 
-void wxWindowDCImpl::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
+void wxWindowDCImpl::DoDrawLines( int n, const wxPoint points[], wxCoord xoffset, wxCoord yoffset )
 {
     wxCHECK_RET( IsOk(), wxT("invalid window dc") );
 
@@ -641,7 +641,7 @@ void wxWindowDCImpl::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCo
     delete[] xpoints;
 }
 
-void wxWindowDCImpl::DoDrawPolygon( int n, wxPoint points[],
+void wxWindowDCImpl::DoDrawPolygon( int n, const wxPoint points[],
                                 wxCoord xoffset, wxCoord yoffset,
                                 wxPolygonFillMode WXUNUSED(fillStyle) )
 {
@@ -1570,8 +1570,8 @@ void wxWindowDCImpl::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
     PangoLayout *layout = pango_layout_new(m_context);
     pango_layout_set_font_description(layout, m_fontdesc);
 
-    const wxCharBuffer data = wxConvUTF8.cWC2MB( text );
-    pango_layout_set_text(layout, (const char*) data, strlen( (const char*) data ));
+    const wxScopedCharBuffer data(text.utf8_str());
+    pango_layout_set_text(layout, data, data.length());
 
     // Measure layout.
     int w,h;
@@ -1658,7 +1658,9 @@ void wxWindowDCImpl::DoGetTextExtent( const wxString &string, wxCoord *width, wx
                                 wxCoord *descent, wxCoord *externalLeading,
                                 const wxFont *font ) const
 {
-    wxCHECK_RET( IsOk(), wxT("invalid dc") );
+    // Do not test for DC validity here, querying text extents is supposed to
+    // work even with a non-initialized wxMemoryDC. And the code below does
+    // actually work in this case.
 
     if (string.empty())
     {
@@ -1675,8 +1677,8 @@ void wxWindowDCImpl::DoGetTextExtent( const wxString &string, wxCoord *width, wx
     else
         pango_layout_set_font_description(layout, m_fontdesc);
 
-    const wxCharBuffer data = wxConvUTF8.cWC2MB( string );
-    pango_layout_set_text(layout, (const char*) data, strlen( (const char*) data ));
+    const wxScopedCharBuffer data(string.utf8_str());
+    pango_layout_set_text(layout, data, data.length());
 
     // Measure text.
     int w,h;
@@ -1721,7 +1723,8 @@ void wxWindowDCImpl::DoGetTextExtent( const wxString &string, wxCoord *width, wx
 
 wxCoord wxWindowDCImpl::GetCharWidth() const
 {
-    wxCHECK_MSG( IsOk(), 0, wxT("invalid dc") );
+    // Do not test for DC validity here for the same reasons as in
+    // DoGetTextExtent() above.
 
 #if wxUSE_UNICODE
     PangoLayout *layout = pango_layout_new( m_context );
@@ -1755,7 +1758,8 @@ wxCoord wxWindowDCImpl::GetCharWidth() const
 
 wxCoord wxWindowDCImpl::GetCharHeight() const
 {
-    wxCHECK_MSG( IsOk(), 0, wxT("invalid dc") );
+    // Do not test for DC validity here for the same reasons as in
+    // DoGetTextExtent() above.
 
 #if wxUSE_UNICODE
     PangoLayout *layout = pango_layout_new( m_context );