diff options
Diffstat (limited to 'utils/viewer-pangoxft.c')
| -rw-r--r-- | utils/viewer-pangoxft.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/utils/viewer-pangoxft.c b/utils/viewer-pangoxft.c new file mode 100644 index 00000000..948cd90e --- /dev/null +++ b/utils/viewer-pangoxft.c @@ -0,0 +1,154 @@ +/* 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)); + + /* XftDrawRect only fills solid. + * Flatten with white. + */ + color.color.red = ((opt_bg_color.red * opt_bg_alpha) >> 16) + (65535 - opt_bg_alpha); + color.color.green = ((opt_bg_color.green * opt_bg_alpha) >> 16) + (65535 - opt_bg_alpha); + color.color.blue = ((opt_bg_color.blue * opt_bg_alpha) >> 16) + (65535 - opt_bg_alpha); + color.color.alpha = 65535; + + XftDrawRect (draw, &color, 0, 0, *width, *height); + + color.color.red = opt_fg_color.red; + color.color.blue = opt_fg_color.green; + color.color.green = opt_fg_color.blue; + color.color.alpha = opt_fg_alpha; + + xft_context.draw = draw; + xft_context.color = color; + + do_output (context, render_callback, NULL, &xft_context, state, width, height); + + 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 +}; |