| /* |
| * 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) |