Really cheesy attempt to make wxDC::DrawText() utilize gtk+ 1.3.1's

multilingual text rendering engine to draw Unicode text (doubt this works
on wxMemoryDC, but at least it makes the generic listctrl show unicode text).

But I suspect that the text engine really should be abstracted at
a higher level in wxWindows...


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@7788 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/dcclient.h

@@ -119,6 +119,10 @@ public:
     wxWindow     *m_owner;
     wxRegion      m_currentClippingRegion;
     wxRegion      m_paintClippingRegion;
+#ifdef __WXGTK20__
+    PangoContext *m_context;
+    PangoFontDescription *m_fontdesc;
+#endif
 
     void SetUpDC();
     void Destroy();

include/wx/gtk1/dcclient.h

@@ -119,6 +119,10 @@ public:
     wxWindow     *m_owner;
     wxRegion      m_currentClippingRegion;
     wxRegion      m_paintClippingRegion;
+#ifdef __WXGTK20__
+    PangoContext *m_context;
+    PangoFontDescription *m_fontdesc;
+#endif
 
     void SetUpDC();
     void Destroy();

src/gtk/dcclient.cpp

@@ -22,6 +22,7 @@
 
 #include <gdk/gdk.h>
 #include <gdk/gdkx.h>
+#include <gdk/gdkprivate.h>
 #include <gtk/gtk.h>
 
 //-----------------------------------------------------------------------------
@@ -78,24 +79,48 @@ void gdk_wx_draw_bitmap     (GdkDrawable  *drawable,
                           gint                width,
                           gint                height)
 {
+#ifdef __WXGTK20__
+    gint src_width, src_height;
+#else
     GdkWindowPrivate *drawable_private;
     GdkWindowPrivate *src_private;
     GdkGCPrivate *gc_private;
+#endif
 
     g_return_if_fail (drawable != NULL);
     g_return_if_fail (src != NULL);
     g_return_if_fail (gc != NULL);
 
+#ifdef __WXGTK20__
+    if (GDK_WINDOW_DESTROYED(drawable) || GDK_WINDOW_DESTROYED(src))
+        return;
+
+    gdk_drawable_get_size(src, &src_width, &src_height);
+#else
     drawable_private = (GdkWindowPrivate*) drawable;
     src_private = (GdkWindowPrivate*) src;
     if (drawable_private->destroyed || src_private->destroyed)
         return;
 
+    src_width = src_private->width;
+    src_height = src_private->height;
+
     gc_private = (GdkGCPrivate*) gc;
+#endif
 
-    if (width == -1) width = src_private->width;
+    if (width == -1) width = src_width;
-    if (height == -1) height = src_private->height;
+    if (height == -1) height = src_height;
 
+#ifdef __WXGTK20__
+    XCopyPlane( GDK_WINDOW_XDISPLAY(drawable),
+                GDK_WINDOW_XID(src),
+                GDK_WINDOW_XID(drawable),
+                GDK_GC_XGC(gc),
+                xsrc, ysrc,
+                width, height,
+                xdest, ydest,
+                1 );
+#else
     XCopyPlane( drawable_private->xdisplay,
                 src_private->xwindow,
                 drawable_private->xwindow,
@@ -104,6 +129,7 @@ void gdk_wx_draw_bitmap     (GdkDrawable  *drawable,
                 width, height,
                 xdest, ydest,
                 1 );
+#endif
 }
 
 //-----------------------------------------------------------------------------
@@ -205,6 +231,10 @@ wxWindowDC::wxWindowDC()
     m_isMemDC = FALSE;
     m_isScreenDC = FALSE;
     m_owner = (wxWindow *)NULL;
+#ifdef __WXGTK20__
+    m_context = (PangoContext *)NULL;
+    m_fontdesc = (PangoFontDescription *)NULL;
+#endif
 }
 
 wxWindowDC::wxWindowDC( wxWindow *window )
@@ -234,6 +264,11 @@ wxWindowDC::wxWindowDC( wxWindow *window )
 
     wxASSERT_MSG( widget, wxT("DC needs a widget") );
 
+#ifdef __WXGTK20__
+    m_context = gtk_widget_get_pango_context( widget );
+    m_fontdesc = widget->style->font_desc;
+#endif
+
     GtkPizza *pizza = GTK_PIZZA( widget );
     m_window = pizza->bin_window;
 
@@ -1197,34 +1232,57 @@ void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
 
     wxCHECK_RET( font, wxT("invalid font") );
 
+#ifdef __WXGTK20__
+    wxCHECK_RET( m_context, wxT("no Pango context") );
+#endif
+
     x = XLOG2DEV(x);
     y = YLOG2DEV(y);
 
+#ifdef __WXGTK20__
+    /* FIXME: the layout engine should probably be abstracted at a higher level in wxDC... */
+    PangoLayout *layout = pango_layout_new(m_context);
+    pango_layout_set_font_description(layout, m_fontdesc);
+    {
+        wxWX2MBbuf data = text.mb_str(wxConvUTF8);
+        pango_layout_set_text(layout, data, strlen(data));
+    }
+    PangoLayoutLine *line = (PangoLayoutLine *)pango_layout_get_lines(layout)->data;
+    PangoRectangle rect;
+    pango_layout_line_get_extents(line, NULL, &rect);
+    wxCoord width = rect.width;
+    wxCoord height = rect.height;
+    gdk_draw_layout( m_window, m_textGC, x, y, layout );
+#else
+    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)
     {
-        wxCoord width = gdk_string_width( font, text.mbc_str() );
-        wxCoord height = font->ascent + font->descent;
         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
 
     /* CMB 17/7/98: simple underline: ignores scaling and underlying
        X font's XA_UNDERLINE_POSITION and XA_UNDERLINE_THICKNESS
        properties (see wxXt implementation) */
     if (m_font.GetUnderlined())
     {
-        wxCoord width = gdk_string_width( font, text.mbc_str() );
         wxCoord ul_y = y + font->ascent;
         if (font->descent > 0) ul_y++;
         gdk_draw_line( m_window, m_textGC, x, ul_y, x + width, ul_y);
     }
 
-    wxCoord w, h;
+#ifdef __WXGTK20__
-    GetTextExtent (text, &w, &h);
+    g_object_unref( G_OBJECT( layout ) );
-    CalcBoundingBox (x + w, y + h);
+#endif
+
+    width = wxCoord(width / m_scaleX);
+    height = wxCoord(height / m_scaleY);
+    CalcBoundingBox (x + width, y + height);
     CalcBoundingBox (x, y);
 }
 
@@ -1405,6 +1463,9 @@ void wxWindowDC::Clear()
 void wxWindowDC::SetFont( const wxFont &font )
 {
     m_font = font;
+#ifdef __WXGTK20__
+    // fix fontdesc?
+#endif
 }
 
 void wxWindowDC::SetPen( const wxPen &pen )

src/gtk1/dcclient.cpp

@@ -22,6 +22,7 @@
 
 #include <gdk/gdk.h>
 #include <gdk/gdkx.h>
+#include <gdk/gdkprivate.h>
 #include <gtk/gtk.h>
 
 //-----------------------------------------------------------------------------
@@ -78,24 +79,48 @@ void gdk_wx_draw_bitmap     (GdkDrawable  *drawable,
                           gint                width,
                           gint                height)
 {
+#ifdef __WXGTK20__
+    gint src_width, src_height;
+#else
     GdkWindowPrivate *drawable_private;
     GdkWindowPrivate *src_private;
     GdkGCPrivate *gc_private;
+#endif
 
     g_return_if_fail (drawable != NULL);
     g_return_if_fail (src != NULL);
     g_return_if_fail (gc != NULL);
 
+#ifdef __WXGTK20__
+    if (GDK_WINDOW_DESTROYED(drawable) || GDK_WINDOW_DESTROYED(src))
+        return;
+
+    gdk_drawable_get_size(src, &src_width, &src_height);
+#else
     drawable_private = (GdkWindowPrivate*) drawable;
     src_private = (GdkWindowPrivate*) src;
     if (drawable_private->destroyed || src_private->destroyed)
         return;
 
+    src_width = src_private->width;
+    src_height = src_private->height;
+
     gc_private = (GdkGCPrivate*) gc;
+#endif
 
-    if (width == -1) width = src_private->width;
+    if (width == -1) width = src_width;
-    if (height == -1) height = src_private->height;
+    if (height == -1) height = src_height;
 
+#ifdef __WXGTK20__
+    XCopyPlane( GDK_WINDOW_XDISPLAY(drawable),
+                GDK_WINDOW_XID(src),
+                GDK_WINDOW_XID(drawable),
+                GDK_GC_XGC(gc),
+                xsrc, ysrc,
+                width, height,
+                xdest, ydest,
+                1 );
+#else
     XCopyPlane( drawable_private->xdisplay,
                 src_private->xwindow,
                 drawable_private->xwindow,
@@ -104,6 +129,7 @@ void gdk_wx_draw_bitmap     (GdkDrawable  *drawable,
                 width, height,
                 xdest, ydest,
                 1 );
+#endif
 }
 
 //-----------------------------------------------------------------------------
@@ -205,6 +231,10 @@ wxWindowDC::wxWindowDC()
     m_isMemDC = FALSE;
     m_isScreenDC = FALSE;
     m_owner = (wxWindow *)NULL;
+#ifdef __WXGTK20__
+    m_context = (PangoContext *)NULL;
+    m_fontdesc = (PangoFontDescription *)NULL;
+#endif
 }
 
 wxWindowDC::wxWindowDC( wxWindow *window )
@@ -234,6 +264,11 @@ wxWindowDC::wxWindowDC( wxWindow *window )
 
     wxASSERT_MSG( widget, wxT("DC needs a widget") );
 
+#ifdef __WXGTK20__
+    m_context = gtk_widget_get_pango_context( widget );
+    m_fontdesc = widget->style->font_desc;
+#endif
+
     GtkPizza *pizza = GTK_PIZZA( widget );
     m_window = pizza->bin_window;
 
@@ -1197,34 +1232,57 @@ void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
 
     wxCHECK_RET( font, wxT("invalid font") );
 
+#ifdef __WXGTK20__
+    wxCHECK_RET( m_context, wxT("no Pango context") );
+#endif
+
     x = XLOG2DEV(x);
     y = YLOG2DEV(y);
 
+#ifdef __WXGTK20__
+    /* FIXME: the layout engine should probably be abstracted at a higher level in wxDC... */
+    PangoLayout *layout = pango_layout_new(m_context);
+    pango_layout_set_font_description(layout, m_fontdesc);
+    {
+        wxWX2MBbuf data = text.mb_str(wxConvUTF8);
+        pango_layout_set_text(layout, data, strlen(data));
+    }
+    PangoLayoutLine *line = (PangoLayoutLine *)pango_layout_get_lines(layout)->data;
+    PangoRectangle rect;
+    pango_layout_line_get_extents(line, NULL, &rect);
+    wxCoord width = rect.width;
+    wxCoord height = rect.height;
+    gdk_draw_layout( m_window, m_textGC, x, y, layout );
+#else
+    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)
     {
-        wxCoord width = gdk_string_width( font, text.mbc_str() );
-        wxCoord height = font->ascent + font->descent;
         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
 
     /* CMB 17/7/98: simple underline: ignores scaling and underlying
        X font's XA_UNDERLINE_POSITION and XA_UNDERLINE_THICKNESS
        properties (see wxXt implementation) */
     if (m_font.GetUnderlined())
     {
-        wxCoord width = gdk_string_width( font, text.mbc_str() );
         wxCoord ul_y = y + font->ascent;
         if (font->descent > 0) ul_y++;
         gdk_draw_line( m_window, m_textGC, x, ul_y, x + width, ul_y);
     }
 
-    wxCoord w, h;
+#ifdef __WXGTK20__
-    GetTextExtent (text, &w, &h);
+    g_object_unref( G_OBJECT( layout ) );
-    CalcBoundingBox (x + w, y + h);
+#endif
+
+    width = wxCoord(width / m_scaleX);
+    height = wxCoord(height / m_scaleY);
+    CalcBoundingBox (x + width, y + height);
     CalcBoundingBox (x, y);
 }
 
@@ -1405,6 +1463,9 @@ void wxWindowDC::Clear()
 void wxWindowDC::SetFont( const wxFont &font )
 {
     m_font = font;
+#ifdef __WXGTK20__
+    // fix fontdesc?
+#endif
 }
 
 void wxWindowDC::SetPen( const wxPen &pen )