summaryrefslogtreecommitdiff
path: root/libs/cairo-1.16.0/test/user-font-rescale.c
diff options
context:
space:
mode:
Diffstat (limited to 'libs/cairo-1.16.0/test/user-font-rescale.c')
-rw-r--r--libs/cairo-1.16.0/test/user-font-rescale.c368
1 files changed, 0 insertions, 368 deletions
diff --git a/libs/cairo-1.16.0/test/user-font-rescale.c b/libs/cairo-1.16.0/test/user-font-rescale.c
deleted file mode 100644
index 6f03b8e..0000000
--- a/libs/cairo-1.16.0/test/user-font-rescale.c
+++ /dev/null
@@ -1,368 +0,0 @@
-/*
- * Copyright © 2008 Jeff Muizelaar
- *
- * 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
- * Jeff Muizelaar not be used in advertising or publicity pertaining to
- * distribution of the software without specific, written prior
- * permission. Jeff Muizelaar makes no representations about the
- * suitability of this software for any purpose. It is provided "as
- * is" without express or implied warranty.
- *
- * JEFF MUIZELAAR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
- * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
- * FITNESS, IN NO EVENT SHALL JEFF MUIZELAAR 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):
- * Jeff Muizelaar <jeff@infidigm.net>
- * Kristian Høgsberg <krh@redhat.com>
- * Behdad Esfahbod <behdad@behdad.org>
- */
-
-#include "cairo-test.h"
-
-#include <math.h>
-
-#define BORDER 10
-#define TEXT_SIZE 32
-#define WIDTH (TEXT_SIZE * 13.75 + 2*BORDER)
-#define HEIGHT ((TEXT_SIZE + 2*BORDER)*3 + BORDER)
-#define TEXT "test of rescaled glyphs"
-
-static const cairo_user_data_key_t rescale_font_closure_key;
-
-struct rescaled_font {
- cairo_font_face_t *substitute_font;
- cairo_scaled_font_t *measuring_font;
- unsigned long glyph_count;
- unsigned long start;
- double *desired_width;
- double *rescale_factor;
-};
-
-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 *metrics)
-{
- cairo_font_face_t *user_font;
- struct rescaled_font *r;
- cairo_glyph_t cairo_glyph;
-
- cairo_glyph.index = glyph;
- cairo_glyph.x = 0;
- cairo_glyph.y = 0;
-
- user_font = cairo_scaled_font_get_font_face (scaled_font);
- r = cairo_font_face_get_user_data (user_font, &rescale_font_closure_key);
- cairo_set_font_face (cr, r->substitute_font);
-
- if (glyph - r->start < r->glyph_count) {
- cairo_matrix_t matrix;
-
- if (isnan (r->rescale_factor[glyph - r->start])) {
- double desired_width;
- double actual_width;
- cairo_text_extents_t extents;
-
- /* measure the glyph and compute the necessary rescaling factor */
- cairo_scaled_font_glyph_extents (r->measuring_font,
- &cairo_glyph, 1,
- &extents);
-
- desired_width = r->desired_width[glyph - r->start];
- actual_width = extents.x_advance;
-
- r->rescale_factor[glyph - r->start] = desired_width / actual_width;
- }
-
- /* scale the font so that the glyph width matches the desired width */
- cairo_get_font_matrix (cr, &matrix);
- cairo_matrix_scale (&matrix, r->rescale_factor[glyph - r->start], 1.);
- cairo_set_font_matrix (cr, &matrix);
- }
-
- cairo_show_glyphs (cr, &cairo_glyph, 1);
- cairo_glyph_extents (cr, &cairo_glyph, 1, metrics);
-
- return CAIRO_STATUS_SUCCESS;
-}
-
-static void
-unichar_to_utf8 (uint32_t ucs4, char utf8[7])
-{
- int i, charlen, first;
-
- if (ucs4 < 0x80) {
- first = 0;
- charlen = 1;
- } else if (ucs4 < 0x800) {
- first = 0xc0;
- charlen = 2;
- } else if (ucs4 < 0x10000) {
- first = 0xe0;
- charlen = 3;
- } else if (ucs4 < 0x200000) {
- first = 0xf0;
- charlen = 4;
- } else if (ucs4 < 0x4000000) {
- first = 0xf8;
- charlen = 5;
- } else {
- first = 0xfc;
- charlen = 6;
- }
-
- for (i = charlen - 1; i > 0; --i) {
- utf8[i] = (ucs4 & 0x3f) | 0x80;
- ucs4 >>= 6;
- }
- utf8[0] = ucs4 | first;
- utf8[charlen] = '\0';
-}
-
-static cairo_status_t
-test_scaled_font_unicode_to_glyph (cairo_scaled_font_t *scaled_font,
- unsigned long unicode,
- unsigned long *glyph_index)
-{
- cairo_font_face_t *user_font;
- struct rescaled_font *r;
- int num_glyphs;
- cairo_glyph_t *glyphs = NULL;
- cairo_status_t status;
- char utf8[7];
-
- user_font = cairo_scaled_font_get_font_face (scaled_font);
-
- unichar_to_utf8 (unicode, utf8);
- r = cairo_font_face_get_user_data (user_font, &rescale_font_closure_key);
- status = cairo_scaled_font_text_to_glyphs (r->measuring_font, 0, 0,
- utf8, -1,
- &glyphs, &num_glyphs,
- NULL, NULL, NULL);
- if (status)
- return status;
-
- *glyph_index = glyphs[0].index;
-
- cairo_glyph_free (glyphs);
- return CAIRO_STATUS_SUCCESS;
-}
-
-static void rescale_font_closure_destroy (void *data)
-{
- struct rescaled_font *r = data;
-
- cairo_font_face_destroy (r->substitute_font);
- cairo_scaled_font_destroy (r->measuring_font);
- free (r->desired_width);
- free (r->rescale_factor);
- free (r);
-}
-
-static cairo_status_t
-create_rescaled_font (cairo_font_face_t *substitute_font,
- int glyph_start,
- int glyph_count,
- double *desired_width,
- cairo_font_face_t **out)
-{
- cairo_font_face_t *user_font_face;
- struct rescaled_font *r;
- cairo_font_options_t *options;
- cairo_status_t status;
- cairo_matrix_t m;
- unsigned long i;
-
- user_font_face = cairo_user_font_face_create ();
- cairo_user_font_face_set_render_glyph_func (user_font_face, test_scaled_font_render_glyph);
- cairo_user_font_face_set_unicode_to_glyph_func (user_font_face, test_scaled_font_unicode_to_glyph);
-
- r = xmalloc (sizeof (struct rescaled_font));
- r->substitute_font = cairo_font_face_reference (substitute_font);
-
- /* we don't want any hinting when doing the measuring */
- options = cairo_font_options_create ();
- cairo_font_options_set_hint_style (options, CAIRO_HINT_STYLE_NONE);
- cairo_font_options_set_hint_metrics (options, CAIRO_HINT_METRICS_OFF);
-
- cairo_matrix_init_identity (&m);
-
- r->measuring_font = cairo_scaled_font_create (r->substitute_font,
- &m, &m,
- options);
- cairo_font_options_destroy (options);
-
-
- r->start = glyph_start;
- r->glyph_count = glyph_count;
- r->desired_width = xcalloc (sizeof (double), r->glyph_count);
- r->rescale_factor = xcalloc (sizeof (double), r->glyph_count);
-
- for (i = 0; i < r->glyph_count; i++) {
- r->desired_width[i] = desired_width[i];
- /* use NaN to specify unset */
- r->rescale_factor[i] = cairo_test_NaN ();
- }
-
- status = cairo_font_face_set_user_data (user_font_face,
- &rescale_font_closure_key,
- r, rescale_font_closure_destroy);
- if (status) {
- rescale_font_closure_destroy (r);
- cairo_font_face_destroy (user_font_face);
- return status;
- }
-
- *out = user_font_face;
- return CAIRO_STATUS_SUCCESS;
-}
-
-static cairo_status_t
-get_user_font_face (cairo_font_face_t *substitute_font,
- const char *text,
- cairo_font_face_t *old,
- cairo_font_face_t **out)
-{
- cairo_font_options_t *options;
- cairo_matrix_t m;
- cairo_scaled_font_t *measure;
- int i;
- double *widths;
- int count;
- int num_glyphs;
- unsigned long min_index, max_index;
- cairo_status_t status;
-
- cairo_glyph_t *glyphs = NULL;
-
- /* we don't want any hinting when doing the measuring */
- options = cairo_font_options_create ();
- cairo_font_options_set_hint_style (options, CAIRO_HINT_STYLE_NONE);
- cairo_font_options_set_hint_metrics (options, CAIRO_HINT_METRICS_OFF);
-
- cairo_matrix_init_identity (&m);
- measure = cairo_scaled_font_create (old, &m, &m, options);
-
- status = cairo_scaled_font_text_to_glyphs (measure, 0, 0,
- text, -1,
- &glyphs, &num_glyphs,
- NULL, NULL, NULL);
- cairo_font_options_destroy (options);
-
- if (status) {
- cairo_scaled_font_destroy (measure);
- return status;
- }
-
- /* find the glyph range the text covers */
- max_index = glyphs[0].index;
- min_index = glyphs[0].index;
- for (i=0; i<num_glyphs; i++) {
- if (glyphs[i].index < min_index)
- min_index = glyphs[i].index;
- if (glyphs[i].index > max_index)
- max_index = glyphs[i].index;
- }
-
- count = max_index - min_index + 1;
- widths = xcalloc (sizeof (double), count);
- /* measure all of the necessary glyphs individually */
- for (i=0; i<num_glyphs; i++) {
- cairo_text_extents_t extents;
- cairo_scaled_font_glyph_extents (measure, &glyphs[i], 1, &extents);
- widths[glyphs[i].index - min_index] = extents.x_advance;
- }
-
- status = cairo_scaled_font_status (measure);
- cairo_scaled_font_destroy (measure);
- cairo_glyph_free (glyphs);
-
- if (status == CAIRO_STATUS_SUCCESS) {
- status = create_rescaled_font (substitute_font,
- min_index, count, widths,
- out);
- }
-
- free (widths);
- return status;
-}
-
-static cairo_test_status_t
-draw (cairo_t *cr, int width, int height)
-{
- cairo_font_extents_t font_extents;
- cairo_text_extents_t extents;
- cairo_font_face_t *rescaled;
- cairo_font_face_t *old;
- cairo_font_face_t *substitute;
- const char text[] = TEXT;
- cairo_status_t status;
-
- cairo_set_source_rgb (cr, 1, 1, 1);
- cairo_paint (cr);
-
- cairo_select_font_face (cr,
- CAIRO_TEST_FONT_FAMILY " Sans",
- CAIRO_FONT_SLANT_NORMAL,
- CAIRO_FONT_WEIGHT_NORMAL);
-
- cairo_set_font_size (cr, TEXT_SIZE);
-
- cairo_font_extents (cr, &font_extents);
- cairo_text_extents (cr, text, &extents);
-
- cairo_set_source_rgb (cr, 0, 0, 0);
- cairo_move_to (cr, BORDER, BORDER + font_extents.ascent);
- cairo_show_text (cr, text);
-
- /* same text in 'mono' with widths that match the 'sans' version */
- old = cairo_font_face_reference (cairo_get_font_face (cr));
- cairo_select_font_face (cr,
- CAIRO_TEST_FONT_FAMILY " Sans Mono",
- CAIRO_FONT_SLANT_NORMAL,
- CAIRO_FONT_WEIGHT_NORMAL);
- substitute = cairo_get_font_face (cr);
-
- status = get_user_font_face (substitute, text, old, &rescaled);
- cairo_font_face_destroy (old);
- if (status) {
- return cairo_test_status_from_status (cairo_test_get_context (cr),
- status);
- }
-
- cairo_set_font_face (cr, rescaled);
- cairo_font_face_destroy (rescaled);
-
- cairo_set_source_rgb (cr, 0, 0, 1);
- cairo_move_to (cr, BORDER, BORDER + font_extents.height + 2*BORDER + font_extents.ascent);
- cairo_show_text (cr, text);
-
- /* mono text */
- cairo_select_font_face (cr,
- CAIRO_TEST_FONT_FAMILY " Sans Mono",
- CAIRO_FONT_SLANT_NORMAL,
- CAIRO_FONT_WEIGHT_NORMAL);
-
- cairo_set_source_rgb (cr, 0, 0, 1);
- cairo_move_to (cr, BORDER, BORDER + 2*font_extents.height + 4*BORDER + font_extents.ascent);
- cairo_show_text (cr, text);
-
- return CAIRO_TEST_SUCCESS;
-}
-
-CAIRO_TEST (user_font_rescale,
- "Tests drawing text with user defined widths",
- "user-font, font", /* keywords */
- NULL, /* requirements */
- WIDTH, HEIGHT,
- NULL, draw)
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-01 11:37:57 +0000