HarfBuzz text shaping engine
http://harfbuzz.github.io/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
102 lines
3.2 KiB
102 lines
3.2 KiB
/* |
|
* 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; |
|
}
|
|
|