new file added

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

diff --git a/src/gtk/dcclient.cpp b/src/gtk/dcclient.cpp
index f9a123a20f2caaf4810ddc73b483e409b7839b0a..c427dfa08ceea3c72a4487890b13c7973d763021 100644 (file)
--- a/src/gtk/dcclient.cpp
+++ b/src/gtk/dcclient.cpp
@@ -129,7 +129,11 @@ enum wxPoolGCType
    wxTEXT_SCREEN,
    wxBG_SCREEN,
    wxPEN_SCREEN,
-   wxBRUSH_SCREEN
+   wxBRUSH_SCREEN,
+   wxTEXT_COLOUR_ALPHA,
+   wxBG_COLOUR_ALPHA,
+   wxPEN_COLOUR_ALPHA,
+   wxBRUSH_COLOUR_ALPHA
 };
 
 struct wxGC
@@ -375,6 +379,18 @@ void wxWindowDCImpl::SetUpDC( bool isMemDC )
             m_textGC = wxGetPoolGC( m_gdkwindow, wxTEXT_SCREEN );
             m_bgGC = wxGetPoolGC( m_gdkwindow, wxBG_SCREEN );
         }
+#if GTK_CHECK_VERSION(2,12,0)
+        // gdk_screen_get_rgba_colormap was added in 2.8, but this code is for
+        // compositing which requires 2.12
+        else if (gtk_check_version(2,12,0) == NULL &&
+            m_cmap == gdk_screen_get_rgba_colormap(gdk_colormap_get_screen(m_cmap)))
+        {
+            m_penGC = wxGetPoolGC( m_gdkwindow, wxPEN_COLOUR_ALPHA );
+            m_brushGC = wxGetPoolGC( m_gdkwindow, wxBRUSH_COLOUR_ALPHA );
+            m_textGC = wxGetPoolGC( m_gdkwindow, wxTEXT_COLOUR_ALPHA );
+            m_bgGC = wxGetPoolGC( m_gdkwindow, wxBG_COLOUR_ALPHA );
+        }
+#endif
         else
         {
             m_penGC = wxGetPoolGC( m_gdkwindow, wxPEN_COLOUR );
@@ -947,7 +963,7 @@ void wxWindowDCImpl::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord
 
             // If the pen is transparent pen we increase the size
             // for better compatibility with other platforms.
-            if ( m_pen.IsNonTransparent() )
+            if (m_pen.IsTransparent())
             {
                 ++ww;
                 ++hh;
@@ -1372,69 +1388,12 @@ void wxWindowDCImpl::DoDrawText(const wxString& text,
 
     gdk_pango_context_set_colormap( m_context, m_cmap );  // not needed in gtk+ >= 2.6
 
-    bool underlined = m_font.IsOk() && m_font.GetUnderlined();
-
     wxCharBuffer data = wxGTK_CONV(text);
     if ( !data )
         return;
-    size_t datalen = strlen(data);
-
-    // in Pango >= 1.16 the "underline of leading/trailing spaces" bug
-    // has been fixed and thus the hack implemented below should never be used
-    static bool pangoOk = !wx_pango_version_check(1, 16, 0);
-
-    bool needshack = underlined && !pangoOk;
 
-    if (needshack)
-    {
-        // a PangoLayout which has leading/trailing spaces with underlined font
-        // is not correctly drawn by this pango version: Pango won't underline the spaces.
-        // This can be a problem; e.g. wxHTML rendering of underlined text relies on
-        // this behaviour. To workaround this problem, we use a special hack here
-        // suggested by pango maintainer Behdad Esfahbod: we prepend and append two
-        // empty space characters and give them a dummy colour attribute.
-        // This will force Pango to underline the leading/trailing spaces, too.
-
-        wxCharBuffer data_tmp(datalen + 6);
-        // copy the leading U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
-        memcpy(data_tmp.data(), "\342\200\214", 3);
-        // copy the user string
-        memcpy(data_tmp.data() + 3, data, datalen);
-        // copy the trailing U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
-        memcpy(data_tmp.data() + 3 + datalen, "\342\200\214", 3);
-
-        data = data_tmp;
-        datalen += 6;
-    }
-
-    pango_layout_set_text(m_layout, data, datalen);
-
-    if (underlined)
-    {
-        PangoAttrList *attrs = pango_attr_list_new();
-        PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
-        a->start_index = 0;
-        a->end_index = datalen;
-        pango_attr_list_insert(attrs, a);
-
-        if (needshack)
-        {
-            // dummy colour for the leading space
-            a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614);
-            a->start_index = 0;
-            a->end_index = 1;
-            pango_attr_list_insert(attrs, a);
-
-            // dummy colour for the trailing space
-            a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614);
-            a->start_index = datalen - 1;
-            a->end_index = datalen;
-            pango_attr_list_insert(attrs, a);
-        }
-
-        pango_layout_set_attributes(m_layout, attrs);
-        pango_attr_list_unref(attrs);
-    }
+    pango_layout_set_text(m_layout, data, data.length());
+    const bool setAttrs = m_font.GTKSetPangoAttrs(m_layout);
 
     int oldSize = 0;
     const bool isScaled = fabs(m_scaleY - 1.0) > 0.00001;
@@ -1473,7 +1432,7 @@ void wxWindowDCImpl::DoDrawText(const wxString& text,
          // actually apply unscaled font
          pango_layout_set_font_description( m_layout, m_fontdesc );
     }
-    if (underlined)
+    if (setAttrs)
     {
         // undo underline attributes setting:
         pango_layout_set_attributes(m_layout, NULL);
@@ -1499,16 +1458,7 @@ void wxWindowDCImpl::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord
         y = YLOG2DEV(y);
 
         pango_layout_set_text(m_layout, wxGTK_CONV(text), -1);
-
-        if (m_font.GetUnderlined())
-        {
-            PangoAttrList *attrs = pango_attr_list_new();
-            PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
-            pango_attr_list_insert(attrs, a);
-            pango_layout_set_attributes(m_layout, attrs);
-            pango_attr_list_unref(attrs);
-        }
-
+        const bool setAttrs = m_font.GTKSetPangoAttrs(m_layout);
         int oldSize = 0;
         const bool isScaled = fabs(m_scaleY - 1.0) > 0.00001;
         if (isScaled)
@@ -1561,7 +1511,7 @@ void wxWindowDCImpl::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord
         gdk_draw_layout_with_colors(m_gdkwindow, m_textGC, x+minX, y+minY,
                                     m_layout, NULL, bg_col);
 
-        if (m_font.GetUnderlined())
+        if (setAttrs)
             pango_layout_set_attributes(m_layout, NULL);
 
         // clean up the transformation matrix
@@ -2304,7 +2254,6 @@ int wxWindowDCImpl::GetDepth() const
     return gdk_drawable_get_depth(m_gdkwindow);
 }
 
-
 //-----------------------------------------------------------------------------
 // wxClientDCImpl
 //-----------------------------------------------------------------------------