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/* viewer-pangoxft.c: PangoXft viewer backend.
*
* Copyright (C) 1999,2004,2005 Red Hat, Inc.
* Copyright (C) 2001 Sun Microsystems
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "viewer-render.h"
#include "viewer-x.h"
#include <pango/pangoxft.h>
static void
default_substitute (FcPattern *pattern,
gpointer data G_GNUC_UNUSED)
{
FcPatternDel (pattern, FC_DPI);
FcPatternAddInteger (pattern, FC_DPI, opt_dpi);
if (opt_hinting != HINT_DEFAULT)
{
FcPatternDel (pattern, FC_HINTING);
FcPatternAddBool (pattern, FC_HINTING, opt_hinting != HINT_NONE);
FcPatternDel (pattern, FC_AUTOHINT);
FcPatternAddBool (pattern, FC_AUTOHINT, opt_hinting == HINT_AUTO);
}
}
static gpointer
pangoxft_view_create (const PangoViewer *klass)
{
XViewer *instance;
instance = x_view_create (klass);
XftInit (NULL);
pango_xft_set_default_substitute (instance->display, instance->screen,
default_substitute, NULL, NULL);
return instance;
}
static void
pangoxft_view_destroy (gpointer instance)
{
XViewer *x = (XViewer *)instance;
pango_xft_shutdown_display (x->display, x->screen);
x_view_destroy (instance);
}
static PangoContext *
pangoxft_view_get_context (gpointer instance)
{
XViewer *x = (XViewer *) instance;
return pango_font_map_create_context (pango_xft_get_font_map (x->display, x->screen));
}
typedef struct
{
XftDraw *draw;
XftColor color;
} MyXftContext;
static void
render_callback (PangoLayout *layout,
int x,
int y,
gpointer context,
gpointer state G_GNUC_UNUSED)
{
MyXftContext *xft_context = (MyXftContext *) context;
pango_xft_render_layout (xft_context->draw,
&xft_context->color,
layout,
x * PANGO_SCALE, y * PANGO_SCALE);
}
static void
pangoxft_view_render (gpointer instance,
gpointer surface,
PangoContext *context,
int width,
int height,
gpointer state)
{
XViewer *x = (XViewer *) instance;
Pixmap pixmap = (Pixmap) surface;
MyXftContext xft_context;
XftDraw *draw;
XftColor color;
draw = XftDrawCreate (x->display, pixmap,
DefaultVisual (x->display, x->screen),
DefaultColormap (x->display, x->screen));
color.color.red = 0xffff;
color.color.blue = 0xffff;
color.color.green = 0xffff;
color.color.alpha = 0xffff;
XftDrawRect (draw, &color, 0, 0, width, height);
color.color.red = 0x0;
color.color.green = 0x0;
color.color.blue = 0x0;
color.color.alpha = 0xffff;
xft_context.draw = draw;
xft_context.color = color;
do_output (context, render_callback, NULL, &xft_context, state, NULL, NULL);
XftDrawDestroy (draw);
}
const PangoViewer pangoxft_viewer = {
"PangoXft",
"xft",
NULL,
pangoxft_view_create,
pangoxft_view_destroy,
pangoxft_view_get_context,
x_view_create_surface,
x_view_destroy_surface,
pangoxft_view_render,
NULL,
x_view_create_window,
x_view_destroy_window,
x_view_display
};
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