Amebis/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Font work.

Browse Source 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@18938 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
2003-01-26 12:40:45 +00:00
parent 138618acb9
commit cfcc393212
12 changed files with 176 additions and 126 deletions
Download Patch File Download Diff File Expand all files Collapse all files

120
src/gtk1/dcclient.cpp
View File

@@ -298,6 +298,7 @@ wxWindowDC::wxWindowDC()
m_owner = (wxWindow *)NULL;
#ifdef __WXGTK20__
m_context = (PangoContext *)NULL;
m_layout = (PangoLayout *)NULL;
m_fontdesc = (PangoFontDescription *)NULL;
#endif
}
@@ -318,9 +319,9 @@ wxWindowDC::wxWindowDC( wxWindow *window )
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();
@@ -331,16 +332,17 @@ wxWindowDC::wxWindowDC( wxWindow *window )
#ifdef __WXGTK20__
m_context = window->GtkGetPangoDefaultContext();
m_fontdesc = widget->style->font_desc;
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;
@@ -363,6 +365,13 @@ wxWindowDC::wxWindowDC( wxWindow *window )
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()
@@ -394,14 +403,6 @@ void wxWindowDC::SetUpDC()
m_bgGC = wxGetPoolGC( m_window, wxBG_COLOUR );
}
#ifdef __WXGTK20__
if (m_isMemDC)
{
m_context = gdk_pango_context_get();
m_fontdesc = pango_context_get_font_description(m_context);
}
#endif
/* background colour */
m_backgroundBrush = *wxWHITE_BRUSH;
m_backgroundBrush.GetColour().CalcPixel( m_cmap );
@@ -1426,38 +1427,35 @@ void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
wxCHECK_RET( font, wxT("invalid font") );
#endif
#ifdef __WXGTK20__
wxCHECK_RET( m_context, wxT("no Pango context") );
#endif
x = XLOG2DEV(x);
y = YLOG2DEV(y);
#ifdef __WXGTK20__
// 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);
wxCHECK_RET( m_context, wxT("no Pango context") );
wxCHECK_RET( m_layout, wxT("o Pango layout") );
wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
{
#if wxUSE_UNICODE
const wxCharBuffer data = wxConvUTF8.cWC2MB( text );
pango_layout_set_text(layout, (const char*) data, strlen( (const char*) data ));
pango_layout_set_text( m_layout, (const char*) data, strlen( (const char*) data ));
#else
const wxWCharBuffer wdata = wxConvLocal.cMB2WC( text );
const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata );
pango_layout_set_text(layout, (const char*) data, strlen( (const char*) data ));
pango_layout_set_text( m_layout, (const char*) data, strlen( (const char*) data ));
#endif
}
// Measure layout.
int w,h;
pango_layout_get_pixel_size(layout, &w, &h);
pango_layout_get_pixel_size( m_layout, &w, &h );
wxCoord width = w;
wxCoord height = h;
// Draw layout.
gdk_draw_layout( m_window, m_textGC, x, y, layout );
gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
g_object_unref( G_OBJECT( layout ) );
#else // GTK+ 1.x
wxCoord width = gdk_string_width( font, text.mbc_str() );
wxCoord height = font->ascent + font->descent;
@@ -1481,7 +1479,6 @@ void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
}
#endif // GTK+ 2.0/1.x
width = wxCoord(width / m_scaleX);
height = wxCoord(height / m_scaleY);
CalcBoundingBox (x + width, y + height);
@@ -1503,7 +1500,7 @@ void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y,
#ifdef __WXGTK20__
// implement later without GdkFont for GTK 2.0
return;
#endif
#else
GdkFont *font = m_font.GetInternalFont( m_scaleY );
wxCHECK_RET( font, wxT("invalid font") );
@@ -1602,6 +1599,7 @@ void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y,
// update the bounding box
CalcBoundingBox(x + minX, y + minY);
CalcBoundingBox(x + maxX, y + maxY);
#endif
}
void wxWindowDC::DoGetTextExtent(const wxString &string,
@@ -1617,26 +1615,22 @@ void wxWindowDC::DoGetTextExtent(const wxString &string,
}
#ifdef __WXGTK20__
// Create layout and set font description
PangoLayout *layout = pango_layout_new(m_context);
// Set new font description
if (theFont)
pango_layout_set_font_description( layout, theFont->GetNativeFontInfo()->description );
else
pango_layout_set_font_description(layout, m_fontdesc);
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(layout, (const char*) data, strlen( (const char*) data ));
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(layout, (const char*) data, strlen( (const char*) data ));
pango_layout_set_text( m_layout, (const char*) data, strlen( (const char*) data ));
#endif
// Measure text.
int w,h;
pango_layout_get_pixel_size(layout, &w, &h);
pango_layout_get_pixel_size( m_layout, &w, &h );
if (width) (*width) = (wxCoord) w;
if (height) (*height) = (wxCoord) h;
@@ -1647,7 +1641,9 @@ void wxWindowDC::DoGetTextExtent(const wxString &string,
}
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;
@@ -1663,13 +1659,9 @@ void wxWindowDC::DoGetTextExtent(const wxString &string,
wxCoord wxWindowDC::GetCharWidth() const
{
#ifdef __WXGTK20__
// There should be an easier way.
PangoLayout *layout = pango_layout_new(m_context);
pango_layout_set_font_description(layout, m_fontdesc);
pango_layout_set_text(layout, "H", 1 );
pango_layout_set_text( m_layout, "H", 1 );
int w,h;
pango_layout_get_pixel_size(layout, &w, &h);
g_object_unref( G_OBJECT( layout ) );
pango_layout_get_pixel_size( m_layout, &w, &h );
return w;
#else
GdkFont *font = m_font.GetInternalFont( m_scaleY );
@@ -1682,13 +1674,9 @@ wxCoord wxWindowDC::GetCharWidth() const
wxCoord wxWindowDC::GetCharHeight() const
{
#ifdef __WXGTK20__
// There should be an easier way.
PangoLayout *layout = pango_layout_new(m_context);
pango_layout_set_font_description(layout, m_fontdesc);
pango_layout_set_text(layout, "H", 1 );
pango_layout_set_text( m_layout, "H", 1 );
int w,h;
pango_layout_get_pixel_size(layout, &w, &h);
g_object_unref( G_OBJECT( layout ) );
pango_layout_get_pixel_size( m_layout, &w, &h );
return h;
#else
GdkFont *font = m_font.GetInternalFont( m_scaleY );
@@ -1738,23 +1726,49 @@ 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__
if (m_font.Ok())
{
m_fontdesc = m_font.GetNativeFontInfo()->description;
if (m_fontdesc)
pango_font_description_free( m_fontdesc );
m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
// If there is a user or actually any scale applied to
// the device context, scale the font.
if (m_scaleY != 1.0)
{
double size = (double) pango_font_description_get_size( m_fontdesc );
size = size * m_scaleY;
pango_font_description_set_size( m_fontdesc, (int)size );
}
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
}