[test/user-font-proxy] New test using fonts inside a user-font

PDF fails and needs some fixes in the PDF surface instead of a new
ref image IMO.

1 files changed, 190 insertions, 0 deletions

diff --git a/test/user-font-proxy.c b/test/user-font-proxy.c
new file mode 100644
index 000000000..f54139cee
--- /dev/null
+++ b/test/user-font-proxy.c
@@ -0,0 +1,190 @@
+/*
+ * Copyright © 2006, 2008 Red Hat, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * Red Hat, Inc. not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Red Hat, Inc. makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Contributor(s):
+ *	Kristian Høgsberg <krh@redhat.com>
+ *	Behdad Esfahbod <behdad@behdad.org>
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "cairo-test.h"
+
+/*#define ROTATED 1*/
+
+#define BORDER 10
+#define TEXT_SIZE 64
+#define WIDTH  (TEXT_SIZE * 12 + 2*BORDER)
+#define HEIGHT ((TEXT_SIZE + 2*BORDER)*2)
+#define TEXT   "geez... cairo user-font"
+
+static cairo_test_draw_function_t draw;
+
+cairo_test_t test = {
+    "user-font-proxy",
+    "Tests a user-font using a native font in its render_glyph",
+#ifndef ROTATED
+    WIDTH, HEIGHT,
+#else
+    WIDTH, WIDTH,
+#endif
+    draw
+};
+
+static cairo_user_data_key_t fallback_scaled_font_key;
+
+static cairo_status_t
+test_scaled_font_init (cairo_scaled_font_t  *scaled_font,
+		       cairo_font_extents_t *extents)
+{
+  cairo_t *cr;
+  cairo_surface_t *surface;
+  cairo_matrix_t ctm;
+  cairo_font_options_t *font_options;
+  cairo_scaled_font_t *fallback_scaled_font;
+
+  /* painful way to get default font face used by toy api */
+  surface = cairo_image_surface_create (CAIRO_FORMAT_A8, 0, 0);
+  cr = cairo_create (surface);
+  cairo_surface_destroy (surface);
+
+  cairo_set_font_size (cr, 1.);
+  cairo_scaled_font_get_scale_matrix (scaled_font, &ctm);
+  cairo_set_matrix (cr, &ctm);
+
+  font_options = cairo_font_options_create ();
+  cairo_scaled_font_get_font_options (scaled_font, font_options);
+  cairo_set_font_options (cr, font_options);
+  cairo_font_options_destroy (font_options);
+
+  fallback_scaled_font = cairo_scaled_font_reference (cairo_get_scaled_font (cr)),
+  cairo_scaled_font_set_user_data (scaled_font,
+				   &fallback_scaled_font_key,
+				   fallback_scaled_font,
+				   cairo_scaled_font_destroy);
+
+  cairo_destroy (cr);
+
+  cairo_scaled_font_extents (fallback_scaled_font, extents);
+
+  return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_status_t
+test_scaled_font_render_glyph (cairo_scaled_font_t  *scaled_font,
+			       unsigned long         glyph,
+			       cairo_t              *cr,
+			       cairo_text_extents_t *extents)
+{
+    char text[2] = "\0";
+
+    /* XXX only works for ASCII.  need ucs4_to_utf8 :( */
+    text[0] = glyph;
+
+    cairo_set_scaled_font (cr,
+			   cairo_scaled_font_get_user_data (scaled_font,
+							    &fallback_scaled_font_key));
+    cairo_show_text (cr, text);
+    cairo_text_extents (cr, text, extents);
+
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_font_face_t *
+get_user_font_face (void)
+{
+    static cairo_font_face_t *user_font_face = NULL;
+
+    if (!user_font_face) {
+	user_font_face = cairo_user_font_face_create ();
+	cairo_user_font_face_set_init_func             (user_font_face, test_scaled_font_init);
+	cairo_user_font_face_set_render_glyph_func     (user_font_face, test_scaled_font_render_glyph);
+    }
+
+    return user_font_face;
+}
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    const char text[] = TEXT;
+    cairo_font_extents_t font_extents;
+    cairo_text_extents_t extents;
+
+    cairo_set_source_rgb (cr, 1, 1, 1);
+    cairo_paint (cr);
+
+#ifdef ROTATED
+    cairo_translate (cr, TEXT_SIZE, 0);
+    cairo_rotate (cr, .6);
+#endif
+
+    cairo_set_font_face (cr, get_user_font_face ());
+    cairo_set_font_size (cr, TEXT_SIZE);
+
+    cairo_font_extents (cr, &font_extents);
+    cairo_text_extents (cr, text, &extents);
+
+    /* logical boundaries in red */
+    cairo_move_to (cr, 0, BORDER);
+    cairo_rel_line_to (cr, WIDTH, 0);
+    cairo_move_to (cr, 0, BORDER + font_extents.ascent);
+    cairo_rel_line_to (cr, WIDTH, 0);
+    cairo_move_to (cr, 0, BORDER + font_extents.ascent + font_extents.descent);
+    cairo_rel_line_to (cr, WIDTH, 0);
+    cairo_move_to (cr, BORDER, 0);
+    cairo_rel_line_to (cr, 0, 2*BORDER + TEXT_SIZE);
+    cairo_move_to (cr, BORDER + extents.x_advance, 0);
+    cairo_rel_line_to (cr, 0, 2*BORDER + TEXT_SIZE);
+    cairo_set_source_rgb (cr, 1, 0, 0);
+    cairo_set_line_width (cr, 2);
+    cairo_stroke (cr);
+
+    /* ink boundaries in green */
+    cairo_rectangle (cr,
+		     BORDER + extents.x_bearing, BORDER + font_extents.ascent + extents.y_bearing,
+		     extents.width, extents.height);
+    cairo_set_source_rgb (cr, 0, 1, 0);
+    cairo_set_line_width (cr, 2);
+    cairo_stroke (cr);
+
+    /* text in gray */
+    cairo_set_source_rgb (cr, 0, 0, 0);
+    cairo_move_to (cr, BORDER, BORDER + font_extents.ascent);
+    cairo_show_text (cr, text);
+
+
+    /* filled version of text in light blue */
+    cairo_set_source_rgb (cr, 0, 0, 1);
+    cairo_move_to (cr, BORDER, BORDER + font_extents.height + BORDER + font_extents.ascent);
+    cairo_text_path (cr, text);
+    cairo_fill (cr);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+int
+main (void)
+{
+    return cairo_test (&test);
+}