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Diffstat (limited to 'examples/viewer-pangox.c')
-rw-r--r-- | examples/viewer-pangox.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/examples/viewer-pangox.c b/examples/viewer-pangox.c new file mode 100644 index 00000000..c4d499af --- /dev/null +++ b/examples/viewer-pangox.c @@ -0,0 +1,113 @@ +/* viewer-pangox.c: PangoX 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 "renderdemo.h" +#include "viewer-x.h" + +#include <pango/pangox.h> + +static void +pangox_view_destroy (gpointer instance) +{ + XViewer *x = (XViewer *)instance; + + pango_x_shutdown_display (x->display); + + x_view_destroy (instance); +} + +static PangoContext * +pangox_view_get_context (gpointer instance) +{ + XViewer *x = (XViewer *) instance; + + return pango_x_get_context (x->display); +} + +typedef struct +{ + XViewer *x; + Drawable drawable; + GC gc; +} MyXContext; + +static void +render_callback (PangoLayout *layout, + int x, + int y, + gpointer context, + gpointer state) +{ + MyXContext *x_context = (MyXContext *) context; + + pango_x_render_layout (x_context->x->display, + x_context->drawable, + x_context->gc, + layout, + x, y); +} + +static void +pangox_view_render (gpointer instance, + gpointer surface, + PangoContext *context, + int width, + int height, + gpointer state) +{ + XViewer *x = (XViewer *) instance; + Pixmap pixmap = (Pixmap) surface; + GC gc; + MyXContext x_context; + + gc = XCreateGC (x->display, pixmap, 0, NULL); + + XSetForeground(x->display, gc, WhitePixel(x->display, x->screen)); + XFillRectangle (x->display, pixmap, gc, 0, 0, width, height); + + x_context.x = x; + x_context.drawable = pixmap; + x_context.gc = gc; + + XSetForeground(x->display, gc, BlackPixel(x->display, x->screen)); + do_output (context, render_callback, NULL, &x_context, state, NULL, NULL); + + XFlush(x->display); + + XFreeGC (x->display, gc); +} + +const PangoViewer pangox_viewer = { + "PangoX", + "x", + NULL, + x_view_create, + pangox_view_destroy, + pangox_view_get_context, + x_view_create_surface, + x_view_destroy_surface, + pangox_view_render, + NULL, + x_view_create_window, + x_view_destroy_window, + x_view_display +}; |