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/*
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 * Copyright © 2005 Red Hat, Inc.
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 *
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 * Permission to use, copy, modify, distribute, and sell this software
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 * and its documentation for any purpose is hereby granted without
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 * fee, provided that the above copyright notice appear in all copies
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 * and that both that copyright notice and this permission notice
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 * appear in supporting documentation, and that the name of
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 * Red Hat, Inc. not be used in advertising or publicity pertaining to
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 * distribution of the software without specific, written prior
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 * permission. Red Hat, Inc. makes no representations about the
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 * suitability of this software for any purpose.  It is provided "as
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 * is" without express or implied warranty.
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 *
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 * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
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 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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 * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
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 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
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 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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 *
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 * Author: Carl D. Worth <cworth@cworth.org>
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 */
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#include "cairo-test.h"

            

        

            

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#include "cairo-boilerplate-scaled-font.h"

            

        

            

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#define TEXT_SIZE 12

            

        

            

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/* Bug history

            

        

            

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 *

            

        

            

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 * 2006-06-22  Carl Worth  <cworth@cworth.org>

            

        

            

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 *

            

        

            

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 *   This is a test case to demonstrate the following bug in the xlib backend:

            

        

            

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 *

            

        

            

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 *	Some characters aren't displayed when using xlib (cache usage missing freeze/thaw)

            

        

            

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 *	https://bugs.freedesktop.org/show_bug.cgi?id=6955

            

        

            

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 *

            

        

            

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 *   We replicate this bug by using the cairo_scaled_font_set_max_glyphs_per_font

            

        

            

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 *   function to artificially induce cache pressure. (This function was added

            

        

            

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 *   for this very purpose.)

            

        

            

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 *

            

        

            

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 * 2006-06-22  Carl Worth  <cworth@cworth.org>

            

        

            

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 *

            

        

            

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 *   Bug was simple enough to solve by just adding a freeze/thaw pair

            

        

            

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 *   around the scaled_font's glyph cache in

            

        

            

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 *   _cairo_xlib_surface_show_glyphs, (I went ahead and added

            

        

            

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 *   _cairo_sacled_font_freeze/thaw_cache functions for this).

            

        

            

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 */

            

        

            

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static cairo_test_status_t

            

        

            

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draw (cairo_t *cr, int width, int height)

            

        

            

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{

            

        

            

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    /* We draw in the default black, so paint white first. */

            

        

            

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    cairo_save (cr);

            

        

            

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    cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */

            

        

            

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    cairo_paint (cr);

            

        

            

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    cairo_restore (cr);

            

        

            

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    cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Sans",

            

        

            

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			    CAIRO_FONT_SLANT_NORMAL,

            

        

            

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			    CAIRO_FONT_WEIGHT_NORMAL);

            

        

            

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    cairo_set_font_size (cr, TEXT_SIZE);

            

        

            

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    cairo_set_source_rgb (cr, 0, 0, 0); /* black */

            

        

            

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    cairo_boilerplate_scaled_font_set_max_glyphs_cached (cairo_get_scaled_font (cr), 1);

            

        

            

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    cairo_move_to (cr, 1, TEXT_SIZE);

            

        

            

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    cairo_show_text (cr, "the five boxing wizards jump quickly");

            

        

            

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    return CAIRO_TEST_SUCCESS;

            

        

            

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}

            

        

            

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CAIRO_TEST (glyph_cache_pressure,

            

        

            

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	    "Ensure that all backends behave well under artificial glyph cache pressure",

            

        

            

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	    "stress", /* keywords */

            

        

            

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	    NULL, /* requirements */

            

        

            

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	    223, TEXT_SIZE + 4,

            

        

            

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	    NULL, draw)