// Purpose:
// Author: Robert Roebling
// RCS-ID: $Id$
-// Copyright: (c) 1998 Robert Roebling, Markus Holzem, Chris Breeze
+// Copyright: (c) 1998 Robert Roebling, Chris Breeze
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
m_owner = (wxWindow *)NULL;
#ifdef __WXGTK20__
m_context = (PangoContext *)NULL;
+ m_layout = (PangoLayout *)NULL;
m_fontdesc = (PangoFontDescription *)NULL;
#endif
}
GtkWidget *widget = window->m_wxwindow;
- // some controls don't have m_wxwindow - like wxStaticBox, but the user
+ // Some controls don't have m_wxwindow - like wxStaticBox, but the user
// code should still be able to create wxClientDCs for them, so we will
- // use the parent window here then
+ // use the parent window here then.
if ( !widget )
{
window = window->GetParent();
wxASSERT_MSG( widget, wxT("DC needs a widget") );
#ifdef __WXGTK20__
- m_context = gtk_widget_get_pango_context( widget );
-
- m_fontdesc = widget->style->font_desc;
+ m_context = window->GtkGetPangoDefaultContext();
+ m_layout = pango_layout_new( m_context );
+ m_fontdesc = pango_font_description_copy( widget->style->font_desc );
#endif
GtkPizza *pizza = GTK_PIZZA( widget );
m_window = pizza->bin_window;
- /* not realized ? */
+ // Window not realized ?
if (!m_window)
{
- /* don't report problems */
+ // Don't report problems as per MSW.
m_ok = TRUE;
return;
wxWindowDC::~wxWindowDC()
{
Destroy();
+
+#ifdef __WXGTK20__
+ if (m_layout)
+ g_object_unref( G_OBJECT( m_layout ) );
+ if (m_fontdesc)
+ pango_font_description_free( m_fontdesc );
+#endif
}
void wxWindowDC::SetUpDC()
wxCHECK_RET( Ok(), wxT("invalid window dc") );
if (!m_window) return;
+
+ if (text.empty()) return;
+#ifndef __WXGTK20__
GdkFont *font = m_font.GetInternalFont( m_scaleY );
wxCHECK_RET( font, wxT("invalid font") );
-
-#if defined(__WXGTK20__)
- wxCHECK_RET( m_context, wxT("no Pango context") );
#endif
x = XLOG2DEV(x);
y = YLOG2DEV(y);
-#if defined(__WXGTK20__) && wxUSE_WCHAR_T
- // 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);
+#ifdef __WXGTK20__
+ wxCHECK_RET( m_context, wxT("no Pango context") );
+ wxCHECK_RET( m_layout, wxT("no Pango layout") );
+ wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
+
+#if wxUSE_UNICODE
+ const wxCharBuffer data = wxConvUTF8.cWC2MB( text );
+#else
+ const wxWCharBuffer wdata = wxConvLocal.cMB2WC( text );
+ const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata );
+#endif
+ pango_layout_set_text( m_layout, (const char*) data, strlen( (const char*) data ));
+
+ if (m_scaleY != 1.0)
+ {
+ // If there is a user or actually any scale applied to
+ // the device context, scale the font.
+
+ // scale font description
+ gint oldSize = pango_font_description_get_size( m_fontdesc );
+ double size = oldSize;
+ size = size * m_scaleY;
+ pango_font_description_set_size( m_fontdesc, (gint)size );
+
+ // actually apply scaled font
+ pango_layout_set_font_description( m_layout, m_fontdesc );
+
+ // Draw layout.
+ gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
+
+ // reset unscaled size
+ pango_font_description_set_size( m_fontdesc, oldSize );
+
+ // actually apply unscaled font
+ pango_layout_set_font_description( m_layout, m_fontdesc );
+ }
+ else
{
- const wxCharBuffer data = wxConvUTF8.cWC2MB( text );
- pango_layout_set_text(layout, (const char*) data, strlen( (const char*) data ));
+ // Draw layout.
+ gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
}
- 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 );
+
+#if 0
+ // Measure layout
+ int w,h;
+ pango_layout_get_pixel_size( m_layout, &w, &h );
+#else
+ int w = 10;
+ int h = 10;
+#endif
+
+ wxCoord width = w;
+ wxCoord height = h;
+
#else // GTK+ 1.x
wxCoord width = gdk_string_width( font, text.mbc_str() );
wxCoord height = font->ascent + font->descent;
}
#endif // GTK+ 2.0/1.x
-#if defined(__WXGTK20__) && wxUSE_WCHAR_T
- g_object_unref( G_OBJECT( layout ) );
-#endif
-
width = wxCoord(width / m_scaleX);
height = wxCoord(height / m_scaleY);
CalcBoundingBox (x + width, y + height);
if (!m_window) return;
+#ifdef __WXGTK20__
+ // implement later without GdkFont for GTK 2.0
+ return;
+#else
GdkFont *font = m_font.GetInternalFont( m_scaleY );
wxCHECK_RET( font, wxT("invalid font") );
// update the bounding box
CalcBoundingBox(x + minX, y + minY);
CalcBoundingBox(x + maxX, y + maxY);
+#endif
}
void wxWindowDC::DoGetTextExtent(const wxString &string,
wxCoord *descent, wxCoord *externalLeading,
wxFont *theFont) const
{
- wxFont fontToUse = m_font;
- if (theFont) fontToUse = *theFont;
if (string.IsEmpty())
{
if (width) (*width) = 0;
}
#ifdef __WXGTK20__
- PangoFontDescription *desc = fontToUse.GetNativeFontInfo()->description;
- PangoLayout *layout = pango_layout_new(m_context);
- pango_layout_set_font_description(layout, desc);
- {
- const wxCharBuffer data = wxConvUTF8.cWC2MB( string );
- pango_layout_set_text(layout, (const char*) data, strlen( (const char*) data ));
- }
- PangoLayoutLine *line = (PangoLayoutLine *)pango_layout_get_lines(layout)->data;
+ // Set new font description
+ if (theFont)
+ pango_layout_set_font_description( m_layout, theFont->GetNativeFontInfo()->description );
+
+ // Set layout's text
+#if wxUSE_UNICODE
+ const wxCharBuffer data = wxConvUTF8.cWC2MB( string );
+ pango_layout_set_text( m_layout, (const char*) data, strlen( (const char*) data ));
+#else
+ const wxWCharBuffer wdata = wxConvLocal.cMB2WC( string );
+ const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata );
+ pango_layout_set_text( m_layout, (const char*) data, strlen( (const char*) data ));
+#endif
- PangoRectangle rect;
- pango_layout_line_get_extents(line, NULL, &rect);
-
+ int w,h;
+ pango_layout_get_pixel_size( m_layout, &w, &h );
- if (width) (*width) = (wxCoord) rect.width;
- if (height) (*height) = (wxCoord) rect.height;
+ if (width) (*width) = (wxCoord) w;
+ if (height) (*height) = (wxCoord) h;
if (descent)
{
- // Do something about metrics here
+ // Do something about metrics here. TODO.
(*descent) = 0;
}
if (externalLeading) (*externalLeading) = 0; // ??
- g_object_unref( G_OBJECT( layout ) );
+ // Reset old font description
+ if (theFont)
+ pango_layout_set_font_description( m_layout, m_fontdesc );
#else
+ wxFont fontToUse = m_font;
+ if (theFont) fontToUse = *theFont;
+
GdkFont *font = fontToUse.GetInternalFont( m_scaleY );
if (width) (*width) = wxCoord(gdk_string_width( font, string.mbc_str() ) / m_scaleX);
if (height) (*height) = wxCoord((font->ascent + font->descent) / m_scaleY);
wxCoord wxWindowDC::GetCharWidth() const
{
+#ifdef __WXGTK20__
+ pango_layout_set_text( m_layout, "H", 1 );
+ int w,h;
+ pango_layout_get_pixel_size( m_layout, &w, &h );
+ return w;
+#else
GdkFont *font = m_font.GetInternalFont( m_scaleY );
wxCHECK_MSG( font, -1, wxT("invalid font") );
return wxCoord(gdk_string_width( font, "H" ) / m_scaleX);
+#endif
}
wxCoord wxWindowDC::GetCharHeight() const
{
+#ifdef __WXGTK20__
+ pango_layout_set_text( m_layout, "H", 1 );
+ int w,h;
+ pango_layout_get_pixel_size( m_layout, &w, &h );
+ return h;
+#else
GdkFont *font = m_font.GetInternalFont( m_scaleY );
wxCHECK_MSG( font, -1, wxT("invalid font") );
return wxCoord((font->ascent + font->descent) / m_scaleY);
+#endif
}
void wxWindowDC::Clear()
void wxWindowDC::SetFont( const wxFont &font )
{
- // It is common practice to set the font to wxNullFont, so
- // don't consider it to be an error
- // wxCHECK_RET( font.Ok(), _T("invalid font in wxWindowDC::SetFont") );
-
m_font = font;
+
#ifdef __WXGTK20__
- m_fontdesc = m_font.GetNativeFontInfo()->description;
+ if (m_font.Ok())
+ {
+ if (m_fontdesc)
+ pango_font_description_free( m_fontdesc );
+
+ m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
+
+
+ if (m_owner)
+ {
+ PangoContext *oldContext = m_context;
+
+ // We might want to use the X11 context for faster
+ // rendering on screen
+ if (m_font.GetNoAntiAliasing())
+ m_context = m_owner->GtkGetPangoX11Context();
+ else
+ m_context = m_owner->GtkGetPangoDefaultContext();
+
+ // If we switch back/forth between different contexts
+ // we also have to create a new layout. I think so,
+ // at least, and it doesn't hurt to do it.
+ if (oldContext != m_context)
+ {
+ if (m_layout)
+ g_object_unref( G_OBJECT( m_layout ) );
+
+ m_layout = pango_layout_new( m_context );
+ }
+ }
+
+ pango_layout_set_font_description( m_layout, m_fontdesc );
+ }
#endif
}
gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
}
}
-#endif
+#endif // GTK+ > 1.0
GdkCapStyle capStyle = GDK_CAP_ROUND;
switch (m_pen.GetCap())
if (!m_window)
return;
- GdkFunction mode = GDK_COPY;
+ GdkFunction mode;
switch (function)
{
case wxXOR: mode = GDK_XOR; break;
case wxINVERT: mode = GDK_INVERT; break;
-#if (GTK_MINOR_VERSION > 0)
+#if (GTK_MINOR_VERSION > 0) || (GTK_MAJOR_VERSION > 1)
case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
case wxCLEAR: mode = GDK_CLEAR; break;
// unsupported by GTK
case wxNOR: mode = GDK_COPY; break;
-#endif
+#endif // GTK+ > 1.0
default:
- {
wxFAIL_MSG( wxT("unsupported logical function") );
- break;
- }
+ mode = GDK_COPY;
}
m_logicalFunction = function;
projects / wxWidgets.git / blobdiff