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