add cairo

1 files changed, 191 insertions, 0 deletions

diff --git a/libs/cairo-1.16.0/test/ft-show-glyphs-positioning.c b/libs/cairo-1.16.0/test/ft-show-glyphs-positioning.c
new file mode 100644
index 0000000..449f8eb
--- /dev/null
+++ b/libs/cairo-1.16.0/test/ft-show-glyphs-positioning.c
@@ -0,0 +1,191 @@
+/*
+ * Copyright © 2008 Adrian Johnson
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Author: Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#include "cairo-test.h"
+#include <cairo-ft.h>
+
+#define TEXT_SIZE 12
+
+typedef struct {
+    cairo_glyph_t glyph_list[100];
+    int num_glyphs;
+    double x;
+    double y;
+} glyph_array_t;
+
+static void
+glyph_array_init (glyph_array_t *glyphs, double x, double y)
+{
+    glyphs->num_glyphs = 0;
+    glyphs->x = x;
+    glyphs->y = y;
+}
+
+static void
+glyph_array_rel_move_to (glyph_array_t *glyphs, double x, double y)
+{
+    glyphs->x += x;
+    glyphs->y += y;
+}
+
+static void
+glyph_array_show (glyph_array_t *glyphs, cairo_t *cr)
+{
+    cairo_show_glyphs (cr, glyphs->glyph_list, glyphs->num_glyphs);
+}
+
+#define DOUBLE_FROM_26_6(t) ((double)(t) / 64.0)
+
+static cairo_status_t
+glyph_array_add_text(glyph_array_t *glyphs, cairo_t *cr, const char *s, double spacing)
+{
+    cairo_scaled_font_t *scaled_font;
+    cairo_status_t status;
+    FT_Face face;
+    unsigned long charcode;
+    unsigned int index;
+    cairo_text_extents_t extents;
+    const char *p;
+    FT_Vector kerning;
+    double kern_x;
+    int first = TRUE;
+
+    scaled_font = cairo_get_scaled_font (cr);
+    status = cairo_scaled_font_status (scaled_font);
+    if (status)
+	return status;
+
+    face = cairo_ft_scaled_font_lock_face (scaled_font);
+    if (face == NULL)
+	return CAIRO_STATUS_FONT_TYPE_MISMATCH;
+
+    p = s;
+    while (*p)
+    {
+        charcode = *p;
+        index = FT_Get_Char_Index (face, charcode);
+        glyphs->glyph_list[glyphs->num_glyphs].index = index;
+        if (first) {
+            first = FALSE;
+            glyphs->glyph_list[glyphs->num_glyphs].x = glyphs->x;
+            glyphs->glyph_list[glyphs->num_glyphs].y = glyphs->y;
+        } else {
+            cairo_glyph_extents (cr, &glyphs->glyph_list[glyphs->num_glyphs - 1], 1, &extents);
+            FT_Get_Kerning (face,
+                            glyphs->glyph_list[glyphs->num_glyphs - 1].index,
+                            glyphs->glyph_list[glyphs->num_glyphs].index,
+                            FT_KERNING_UNSCALED,
+                            &kerning);
+            kern_x = DOUBLE_FROM_26_6(kerning.x);
+            glyphs->glyph_list[glyphs->num_glyphs].x =
+		glyphs->glyph_list[glyphs->num_glyphs - 1].x + extents.x_advance + kern_x + spacing;
+            glyphs->glyph_list[glyphs->num_glyphs].y =
+		glyphs->glyph_list[glyphs->num_glyphs - 1].y + extents.y_advance;
+	}
+
+	cairo_glyph_extents (cr, &glyphs->glyph_list[glyphs->num_glyphs], 1, &extents);
+	glyphs->x = glyphs->glyph_list[glyphs->num_glyphs].x + extents.x_advance + spacing;
+	glyphs->y = glyphs->glyph_list[glyphs->num_glyphs].y + extents.y_advance;
+	p++;
+        glyphs->num_glyphs++;
+    }
+
+    cairo_ft_scaled_font_unlock_face (scaled_font);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    const cairo_test_context_t *ctx = cairo_test_get_context (cr);
+    glyph_array_t glyphs;
+    cairo_font_options_t *font_options;
+    cairo_status_t status;
+
+    /* paint white so we don't need separate ref images for
+     * RGB24 and ARGB32 */
+    cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
+    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);
+
+    font_options = cairo_font_options_create ();
+    cairo_get_font_options (cr, font_options);
+    cairo_font_options_set_hint_metrics (font_options, CAIRO_HINT_METRICS_OFF);
+    cairo_set_font_options (cr, font_options);
+    cairo_font_options_destroy (font_options);
+
+    cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
+
+    glyph_array_init (&glyphs, 1, TEXT_SIZE);
+
+    status = glyph_array_add_text(&glyphs, cr, "AWAY again", 0.0);
+    if (status)
+	return cairo_test_status_from_status (ctx, status);
+
+    glyph_array_rel_move_to (&glyphs, TEXT_SIZE*1, 0.0);
+    status = glyph_array_add_text(&glyphs, cr, "character space", TEXT_SIZE*0.3);
+    if (status)
+	return cairo_test_status_from_status (ctx, status);
+
+    glyph_array_show (&glyphs, cr);
+
+
+    glyph_array_init (&glyphs, 1, TEXT_SIZE*2 + 4);
+
+    status = glyph_array_add_text(&glyphs, cr, "Increasing", 0.0);
+    if (status)
+	return cairo_test_status_from_status (ctx, status);
+
+    glyph_array_rel_move_to (&glyphs, TEXT_SIZE*0.5, 0.0);
+    status = glyph_array_add_text(&glyphs, cr, "space", 0.0);
+    if (status)
+	return cairo_test_status_from_status (ctx, status);
+
+    glyph_array_rel_move_to (&glyphs, TEXT_SIZE*1.0, 0.0);
+    status = glyph_array_add_text(&glyphs, cr, "between", 0.0);
+    if (status)
+	return cairo_test_status_from_status (ctx, status);
+
+    glyph_array_rel_move_to (&glyphs, TEXT_SIZE*1.5, 0.0);
+    status = glyph_array_add_text(&glyphs, cr, "words", 0.0);
+    if (status)
+	return cairo_test_status_from_status (ctx, status);
+
+    glyph_array_show (&glyphs, cr);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (ft_show_glyphs_positioning,
+	    "Test that the PS/PDF glyph positioning optimizations are correct",
+	    "ft, text", /* keywords */
+	    NULL, /* requirements */
+	    235, (TEXT_SIZE + 4)*2,
+	    NULL, draw)