| /* |
| * Copyright © 2012 Google, Inc. |
| * |
| * This is part of HarfBuzz, a text shaping library. |
| * |
| * Permission is hereby granted, without written agreement and without |
| * license or royalty fees, to use, copy, modify, and distribute this |
| * software and its documentation for any purpose, provided that the |
| * above copyright notice and the following two paragraphs appear in |
| * all copies of this software. |
| * |
| * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
| * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
| * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
| * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
| * DAMAGE. |
| * |
| * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
| * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
| * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
| * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
| * |
| * Google Author(s): Behdad Esfahbod |
| */ |
| |
| #include "helper-cairo-ansi.hh" |
| #include "options.hh" |
| |
| #include "ansi-print.hh" |
| |
| |
| cairo_status_t |
| helper_cairo_surface_write_to_ansi_stream (cairo_surface_t *surface, |
| cairo_write_func_t write_func, |
| void *closure) |
| { |
| unsigned int width = cairo_image_surface_get_width (surface); |
| unsigned int height = cairo_image_surface_get_height (surface); |
| if (cairo_image_surface_get_format (surface) != CAIRO_FORMAT_RGB24) { |
| cairo_surface_t *new_surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height); |
| cairo_t *cr = cairo_create (new_surface); |
| if (cairo_image_surface_get_format (surface) == CAIRO_FORMAT_A8) { |
| cairo_set_source_rgb (cr, 0., 0., 0.); |
| cairo_paint (cr); |
| cairo_set_source_rgb (cr, 1., 1., 1.); |
| cairo_mask_surface (cr, surface, 0, 0); |
| } else { |
| cairo_set_source_rgb (cr, 1., 1., 1.); |
| cairo_paint (cr); |
| cairo_set_source_surface (cr, surface, 0, 0); |
| cairo_paint (cr); |
| } |
| cairo_destroy (cr); |
| surface = new_surface; |
| } else |
| cairo_surface_reference (surface); |
| |
| unsigned int stride = cairo_image_surface_get_stride (surface); |
| const uint32_t *data = (uint32_t *) (void *) cairo_image_surface_get_data (surface); |
| |
| /* We don't have rows to spare on the terminal window... |
| * Find the tight image top/bottom and only print in between. */ |
| |
| /* Use corner color as background color. */ |
| uint32_t bg_color = data ? * (uint32_t *) data : 0; |
| |
| /* Drop first row while empty */ |
| while (height) |
| { |
| unsigned int i; |
| for (i = 0; i < width; i++) |
| if (data[i] != bg_color) |
| break; |
| if (i < width) |
| break; |
| data += stride / 4; |
| height--; |
| } |
| |
| /* Drop last row while empty */ |
| unsigned int orig_height = height; |
| while (height) |
| { |
| const uint32_t *row = data + (height - 1) * stride / 4; |
| unsigned int i; |
| for (i = 0; i < width; i++) |
| if (row[i] != bg_color) |
| break; |
| if (i < width) |
| break; |
| height--; |
| } |
| if (height < orig_height) |
| height++; /* Add one last blank row for padding. */ |
| |
| if (width && height) |
| ansi_print_image_rgb24 (data, width, height, stride / 4); |
| |
| cairo_surface_destroy (surface); |
| return CAIRO_STATUS_SUCCESS; |
| } |