summaryrefslogtreecommitdiff
path: root/utils/viewer-pangoxft.c
diff options
context:
space:
mode:
authorBehdad Esfahbod <behdad@behdad.org>2018-07-08 14:45:32 +0200
committerBehdad Esfahbod <behdad@behdad.org>2018-07-08 14:45:32 +0200
commit899841121260d62fc3f1c1728f82f5c02185dd97 (patch)
tree643abf1f58c3b627b786d3b89a103a0df956172f /utils/viewer-pangoxft.c
parent5ec478dac9146175de7ba4a1f88ebbab963f4c0f (diff)
downloadpango-899841121260d62fc3f1c1728f82f5c02185dd97.tar.gz
Rename pango-view/ dir to utils/
Diffstat (limited to 'utils/viewer-pangoxft.c')
-rw-r--r--utils/viewer-pangoxft.c154
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
+};