[util] Make hb-view print out Unicode art if stdout is a terminal
This commit is contained in:
Behdad Esfahbod
parent
8b2753ce2b
commit
52e7b1424a
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@ -52,8 +52,8 @@ AC_SUBST(HB_LIBTOOL_VERSION_INFO)
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dnl GTK_DOC_CHECK([1.15],[--flavour no-tmpl])
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dnl GTK_DOC_CHECK([1.15],[--flavour no-tmpl])
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# Functions and headers
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# Functions and headers
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AC_CHECK_FUNCS(mprotect sysconf getpagesize mmap _setmode)
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AC_CHECK_FUNCS(mprotect sysconf getpagesize mmap _setmode isatty)
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AC_CHECK_HEADERS(unistd.h sys/mman.h io.h)
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AC_CHECK_HEADERS(unistd.h sys/mman.h io.h sys/ioctl.h)
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# Compiler flags
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# Compiler flags
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AC_CANONICAL_HOST
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AC_CANONICAL_HOST
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@ -28,10 +28,14 @@ if HAVE_CAIRO_FT
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hb_view_SOURCES = \
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hb_view_SOURCES = \
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hb-view.cc \
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hb-view.cc \
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hb-view.hh \
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hb-view.hh \
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ansi-print.cc \
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ansi-print.hh \
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options.cc \
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options.cc \
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options.hh \
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options.hh \
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helper-cairo.cc \
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helper-cairo.cc \
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helper-cairo.hh \
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helper-cairo.hh \
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helper-cairo-ansi.cc \
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helper-cairo-ansi.hh \
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view-cairo.cc \
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view-cairo.cc \
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view-cairo.hh \
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view-cairo.hh \
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$(NULL)
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$(NULL)
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@ -0,0 +1,411 @@
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/*
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "ansi-print.hh"
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#include <assert.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <string.h>
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#include <stdio.h>
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#include <math.h>
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#include <fcntl.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h> /* for isatty() */
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#endif
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#ifdef HAVE_SYS_IOCTL_H
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#include <sys/ioctl.h>
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#endif
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#define MAX(a,b) ((a) > (b) ? (a) : (b))
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#define CELL_W 8
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#define CELL_H (2 * CELL_W)
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struct color_diff_t
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{
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int dot (const color_diff_t &o)
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{ return v[0]*o.v[0] + v[1]*o.v[1] + v[2]*o.v[2] + v[3]*o.v[3]; }
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int v[4];
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};
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struct color_t
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{
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static color_t from_ansi (unsigned int x)
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{
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color_t c = {(0xFF<<24) | ((0xFF*(x&1))<<16) | ((0xFF*((x >> 1)&1))<<8) | (0xFF*((x >> 2)&1))};
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return c;
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}
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unsigned int to_ansi (void)
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{
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return ((v >> 23) & 1) | ((v >> 14)&2) | ((v >> 5)&4);
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}
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color_diff_t diff (const color_t &o)
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{
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color_diff_t d;
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for (unsigned int i = 0; i < 4; i++)
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d.v[i] = (int) ((v >> (i*8))&0xFF) - (int) ((o.v >> (i*8))&0xFF);
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return d;
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}
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uint32_t v;
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};
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struct image_t
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{
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public:
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image_t (unsigned int width_,
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unsigned int height_,
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const uint32_t *data_,
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unsigned int stride_) :
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width (width_),
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height (height_),
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own_data (false),
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data ((color_t *) data_),
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stride (stride_) {}
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image_t (unsigned int width_,
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unsigned int height_) :
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width (width_),
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height (height_),
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own_data (true),
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data ((color_t *) malloc (sizeof (data[0]) * width * height)),
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stride (width) {}
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~image_t (void)
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{ if (own_data) free (data); }
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color_t &operator () (unsigned int x, unsigned int y)
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{ return data[x + y * stride]; }
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color_t operator () (unsigned int x, unsigned int y) const
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{ return data[x + y * stride]; }
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void
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copy_sub_image (const image_t &s,
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unsigned int x, unsigned int y,
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unsigned int w, unsigned int h)
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{
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assert (x < width);
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assert (y < height);
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for (unsigned int row = 0; row < h; row++) {
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color_t *p = data + x + MIN (y + row, height - 1) * stride;
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color_t *q = s.data + row * s.stride;
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if (x + w <= width)
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for (unsigned int col = 0; col < w; col++)
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*q++ = *p++;
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else {
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unsigned int limit = width - x;
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for (unsigned int col = 0; col < limit; col++)
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*q++ = *p++;
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p--;
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for (unsigned int col = limit; col < w; col++)
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*q++ = *p;
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}
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}
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}
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const unsigned int width;
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const unsigned int height;
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private:
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bool own_data;
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color_t * const data;
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const unsigned int stride;
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};
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struct biimage_t
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{
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public:
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biimage_t (unsigned int width, unsigned int height) :
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width (width),
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height (height),
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data ((uint8_t *) malloc (sizeof (data[0]) * width * height)) {}
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~biimage_t (void)
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{ free (data); }
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void set (const image_t &image)
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{
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assert (image.width == width);
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assert (image.height == height);
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int freq[8] = {0};
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for (unsigned int y = 0; y < height; y++)
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for (unsigned int x = 0; x < width; x++) {
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color_t c = image (x, y);
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freq[c.to_ansi ()]++;
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}
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bg = 0;
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for (unsigned int i = 1; i < 8; i++)
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if (freq[bg] < freq[i])
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bg = i;
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fg = 0;
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for (unsigned int i = 1; i < 8; i++)
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if (i != bg && freq[fg] < freq[i])
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fg = i;
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if (fg == bg || freq[fg] == 0) {
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fg = bg;
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unicolor = true;
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}
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else
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unicolor = false;
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/* Set the data... */
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if (unicolor) {
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memset (data, 0, sizeof (data[0]) * width * height);
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return;
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}
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color_t bgc = color_t::from_ansi (bg);
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color_t fgc = color_t::from_ansi (fg);
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color_diff_t diff = fgc.diff (bgc);
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int dd = diff.dot (diff);
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for (unsigned int y = 0; y < height; y++)
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for (unsigned int x = 0; x < width; x++) {
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int d = diff.dot (image (x, y).diff (bgc));
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(*this)(x, y) = d < 0 ? 0 : d > dd ? 255 : lround (d * 255. / dd);
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}
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}
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uint8_t &operator () (unsigned int x, unsigned int y)
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{ return data[x + y * width]; }
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uint8_t operator () (unsigned int x, unsigned int y) const
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{ return data[x + y * width]; }
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const unsigned int width;
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const unsigned int height;
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unsigned int bg;
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unsigned int fg;
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bool unicolor;
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private:
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uint8_t * const data;
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};
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const char *
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block_best (const biimage_t &bi, unsigned int *score, bool *inverse)
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{
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unsigned int row_sum[bi.height];
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unsigned int col_sum[bi.width];
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unsigned int row_sum_i[bi.height];
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unsigned int col_sum_i[bi.width];
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for (unsigned int i = 0; i < bi.height; i++)
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row_sum[i] = row_sum_i[i] = 0;
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for (unsigned int i = 0; i < bi.width; i++)
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col_sum[i] = col_sum_i[i] = 0;
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unsigned int total = 0;
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unsigned int total_i = 0;
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unsigned int quad[2][2] = {{0}};
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unsigned int quad_i[2][2] = {{0}};
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for (unsigned int y = 0; y < bi.height; y++)
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for (unsigned int x = 0; x < bi.width; x++) {
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unsigned int c = bi (x, y);
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row_sum[y] += c;
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col_sum[x] += c;
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quad[2 * y / bi.height][2 * x / bi.width] += c;
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quad_i[2 * y / bi.height][2 * x / bi.width] += 255 - c;
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total += c;
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total_i += 255 - c;
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}
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for (unsigned int i = 0; i < bi.height; i++)
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row_sum_i[i] = 255 * bi.width - row_sum[i];
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for (unsigned int i = 0; i < bi.width; i++)
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col_sum_i[i] = 255 * bi.height - col_sum[i];
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/* Make the sums cummulative */
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for (unsigned int i = 1; i < bi.height; i++) {
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row_sum[i] += row_sum[i - 1];
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row_sum_i[i] += row_sum_i[i - 1];
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}
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for (unsigned int i = 1; i < bi.width; i++) {
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col_sum[i] += col_sum[i - 1];
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col_sum_i[i] += col_sum_i[i - 1];
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}
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*score = (unsigned int) -1;
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*inverse = false;
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const char *best_c = " ";
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/* Maybe empty is better! */
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if (total < *score) {
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*score = total;
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*inverse = false;
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best_c = " ";
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}
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/* Maybe full is better! */
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if (total_i < *score) {
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*score = total_i;
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*inverse = true;
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best_c = " ";
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}
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/* Find best lower line */
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if (1) {
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unsigned int best_s = (unsigned int) -1;
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bool best_inv = false;
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int best_i = 0;
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for (unsigned int i = 0; i < bi.height - 1; i++)
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{
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unsigned int s;
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s = row_sum[i] + total_i - row_sum_i[i];
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if (s < best_s) {
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best_s = s;
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best_i = i;
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best_inv = false;
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}
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s = row_sum_i[i] + total - row_sum[i];
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if (s < best_s) {
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best_s = s;
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best_i = i;
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best_inv = true;
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}
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}
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if (best_s < *score) {
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static const char *lower[7] = {"▁", "▂", "▃", "▄", "▅", "▆", "▇"};
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unsigned int which = lround (((best_i + 1) * 8) / bi.height);
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if (1 <= which && which <= 7) {
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*score = best_s;
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*inverse = best_inv;
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best_c = lower[7 - which];
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}
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}
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}
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/* Find best left line */
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/* Disable this as it looks ugly because of line height issues. */
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if (1) {
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unsigned int best_s = (unsigned int) -1;
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bool best_inv = false;
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int best_i = 0;
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for (unsigned int i = 0; i < bi.width - 1; i++)
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{
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unsigned int s;
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s = col_sum[i] + total_i - col_sum_i[i];
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if (s < best_s) {
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best_s = s;
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best_i = i;
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best_inv = true;
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}
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s = col_sum_i[i] + total - col_sum[i];
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if (s < best_s) {
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best_s = s;
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best_i = i;
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best_inv = false;
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}
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}
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if (best_s < *score) {
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static const char *left [7] = {"▏", "▎", "▍", "▌", "▋", "▊", "▉"};
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unsigned int which = lround (((best_i + 1) * 8) / bi.width);
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if (1 <= which && which <= 7) {
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*score = best_s;
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*inverse = best_inv;
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best_c = left[which - 1];
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}
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}
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}
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/* Quadrant? */
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unsigned int q = 0;
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unsigned int qs = 0;
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for (unsigned int i = 0; i < 2; i++)
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for (unsigned int j = 0; j < 2; j++)
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if (quad[i][j] > quad_i[i][j]) {
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q += 1 << (2 * i + j);
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qs += quad_i[i][j];
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} else
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qs += quad[i][j];
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if (qs < *score) {
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const char *c = NULL;
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bool inv = false;
|
||||||
|
switch (q) {
|
||||||
|
case 1: c = "▟"; inv = true; break;
|
||||||
|
case 2: c = "▙"; inv = true; break;
|
||||||
|
case 4: c = "▖"; inv = false; break;
|
||||||
|
case 8: c = "▗"; inv = false; break;
|
||||||
|
case 9: c = "▚"; inv = false; break;
|
||||||
|
case 6: c = "▞"; inv = false; break;
|
||||||
|
case 7: c = "▜"; inv = true; break;
|
||||||
|
case 11: c = "▜"; inv = true; break;
|
||||||
|
case 13: c = "▙"; inv = true; break;
|
||||||
|
case 14: c = "▟"; inv = true; break;
|
||||||
|
}
|
||||||
|
if (c) {
|
||||||
|
*score = qs;
|
||||||
|
*inverse = inv;
|
||||||
|
best_c = c;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return best_c;
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
ansi_print_image_rgb24 (const uint32_t *data,
|
||||||
|
unsigned int width,
|
||||||
|
unsigned int height,
|
||||||
|
unsigned int stride)
|
||||||
|
{
|
||||||
|
/* Get screen size */
|
||||||
|
struct winsize w;
|
||||||
|
if (ioctl(1, TIOCGWINSZ, &w)) /* Ought to be stdout, right? */
|
||||||
|
{
|
||||||
|
w.ws_row = 25;
|
||||||
|
w.ws_col = 80;
|
||||||
|
}
|
||||||
|
|
||||||
|
image_t image (width, height, data, stride);
|
||||||
|
|
||||||
|
unsigned int rows = (height + CELL_H - 1) / CELL_H;
|
||||||
|
unsigned int cols = (width + CELL_W - 1) / CELL_W;
|
||||||
|
image_t cell (CELL_W, CELL_H);
|
||||||
|
biimage_t bi (CELL_W, CELL_H);
|
||||||
|
for (unsigned int row = 0; row < rows; row++) {
|
||||||
|
for (unsigned int col = 0; col < cols; col++) {
|
||||||
|
image.copy_sub_image (cell, col * CELL_W, row * CELL_H, CELL_W, CELL_H);
|
||||||
|
bi.set (cell);
|
||||||
|
if (bi.unicolor)
|
||||||
|
printf ("\e[%dm ", 40 + bi.bg);
|
||||||
|
else {
|
||||||
|
/* Figure out the closest character to the biimage */
|
||||||
|
unsigned int score = (unsigned int) -1;
|
||||||
|
bool inverse;
|
||||||
|
const char *c = block_best (bi, &score, &inverse);
|
||||||
|
printf ("\e[%d;%dm%s", (inverse ? 30 : 40) + bi.bg, (inverse ? 40 : 30) + bi.fg, c);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
printf ("\e[0m\n"); /* Reset */
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,39 @@
|
||||||
|
/*
|
||||||
|
* 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
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef ANSI_PRINT_HH
|
||||||
|
#define ANSI_PRINT_HH
|
||||||
|
|
||||||
|
#include <hb.h> /* for int types */
|
||||||
|
|
||||||
|
void
|
||||||
|
ansi_print_image_rgb24 (const uint32_t *data,
|
||||||
|
unsigned int width,
|
||||||
|
unsigned int height,
|
||||||
|
unsigned int stride);
|
||||||
|
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
@ -0,0 +1,102 @@
|
||||||
|
/*
|
||||||
|
* 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 *) 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 = * (uint32_t *) data;
|
||||||
|
|
||||||
|
/* 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;
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,39 @@
|
||||||
|
/*
|
||||||
|
* 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 <cairo.h>
|
||||||
|
|
||||||
|
#ifndef HELPER_CAIRO_ANSI_HH
|
||||||
|
#define HELPER_CAIRO_ANSI_HH
|
||||||
|
|
||||||
|
|
||||||
|
cairo_status_t
|
||||||
|
helper_cairo_surface_write_to_ansi_stream (cairo_surface_t *surface,
|
||||||
|
cairo_write_func_t write_func,
|
||||||
|
void *closure);
|
||||||
|
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
@ -29,6 +29,7 @@
|
||||||
#include <cairo-ft.h>
|
#include <cairo-ft.h>
|
||||||
#include <hb-ft.h>
|
#include <hb-ft.h>
|
||||||
|
|
||||||
|
#include "helper-cairo-ansi.hh"
|
||||||
#ifdef CAIRO_HAS_SVG_SURFACE
|
#ifdef CAIRO_HAS_SVG_SURFACE
|
||||||
# include <cairo-svg.h>
|
# include <cairo-svg.h>
|
||||||
#endif
|
#endif
|
||||||
|
|
@ -111,6 +112,63 @@ struct finalize_closure_t {
|
||||||
};
|
};
|
||||||
static cairo_user_data_key_t finalize_closure_key;
|
static cairo_user_data_key_t finalize_closure_key;
|
||||||
|
|
||||||
|
|
||||||
|
static void
|
||||||
|
finalize_ansi (finalize_closure_t *closure)
|
||||||
|
{
|
||||||
|
cairo_status_t status;
|
||||||
|
status = helper_cairo_surface_write_to_ansi_stream (closure->surface,
|
||||||
|
closure->write_func,
|
||||||
|
closure->closure);
|
||||||
|
if (status != CAIRO_STATUS_SUCCESS)
|
||||||
|
fail (FALSE, "Failed to write output: %s",
|
||||||
|
cairo_status_to_string (status));
|
||||||
|
}
|
||||||
|
|
||||||
|
static cairo_surface_t *
|
||||||
|
_cairo_ansi_surface_create_for_stream (cairo_write_func_t write_func,
|
||||||
|
void *closure,
|
||||||
|
double width,
|
||||||
|
double height,
|
||||||
|
cairo_content_t content)
|
||||||
|
{
|
||||||
|
cairo_surface_t *surface;
|
||||||
|
int w = ceil (width);
|
||||||
|
int h = ceil (height);
|
||||||
|
|
||||||
|
switch (content) {
|
||||||
|
case CAIRO_CONTENT_ALPHA:
|
||||||
|
surface = cairo_image_surface_create (CAIRO_FORMAT_A8, w, h);
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
case CAIRO_CONTENT_COLOR:
|
||||||
|
surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, w, h);
|
||||||
|
break;
|
||||||
|
case CAIRO_CONTENT_COLOR_ALPHA:
|
||||||
|
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, w, h);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
cairo_status_t status = cairo_surface_status (surface);
|
||||||
|
if (status != CAIRO_STATUS_SUCCESS)
|
||||||
|
fail (FALSE, "Failed to create cairo surface: %s",
|
||||||
|
cairo_status_to_string (status));
|
||||||
|
|
||||||
|
finalize_closure_t *ansi_closure = g_new0 (finalize_closure_t, 1);
|
||||||
|
ansi_closure->callback = finalize_ansi;
|
||||||
|
ansi_closure->surface = surface;
|
||||||
|
ansi_closure->write_func = write_func;
|
||||||
|
ansi_closure->closure = closure;
|
||||||
|
|
||||||
|
if (cairo_surface_set_user_data (surface,
|
||||||
|
&finalize_closure_key,
|
||||||
|
(void *) ansi_closure,
|
||||||
|
(cairo_destroy_func_t) g_free))
|
||||||
|
g_free ((void *) closure);
|
||||||
|
|
||||||
|
return surface;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
#ifdef CAIRO_HAS_PNG_FUNCTIONS
|
#ifdef CAIRO_HAS_PNG_FUNCTIONS
|
||||||
|
|
||||||
static void
|
static void
|
||||||
|
|
@ -204,10 +262,18 @@ helper_cairo_create_context (double w, double h,
|
||||||
cairo_content_t content) = NULL;
|
cairo_content_t content) = NULL;
|
||||||
|
|
||||||
const char *extension = out_opts->output_format;
|
const char *extension = out_opts->output_format;
|
||||||
if (!extension)
|
if (!extension) {
|
||||||
extension = "png";
|
#if HAVE_ISATTY
|
||||||
|
if (isatty (fileno (out_opts->get_file_handle ())))
|
||||||
|
extension = "ansi";
|
||||||
|
else
|
||||||
|
#endif
|
||||||
|
extension = "png";
|
||||||
|
}
|
||||||
if (0)
|
if (0)
|
||||||
;
|
;
|
||||||
|
else if (0 == strcasecmp (extension, "ansi"))
|
||||||
|
constructor2 = _cairo_ansi_surface_create_for_stream;
|
||||||
#ifdef CAIRO_HAS_PNG_FUNCTIONS
|
#ifdef CAIRO_HAS_PNG_FUNCTIONS
|
||||||
else if (0 == strcasecmp (extension, "png"))
|
else if (0 == strcasecmp (extension, "png"))
|
||||||
constructor2 = _cairo_png_surface_create_for_stream;
|
constructor2 = _cairo_png_surface_create_for_stream;
|
||||||
|
|
|
||||||
|
|
@ -40,6 +40,9 @@
|
||||||
#include <locale.h>
|
#include <locale.h>
|
||||||
#include <errno.h>
|
#include <errno.h>
|
||||||
#include <fcntl.h>
|
#include <fcntl.h>
|
||||||
|
#ifdef HAVE_UNISTD_H
|
||||||
|
#include <unistd.h> /* for isatty() */
|
||||||
|
#endif
|
||||||
#ifdef HAVE_IO_H
|
#ifdef HAVE_IO_H
|
||||||
#include <io.h> /* for _setmode() under Windows */
|
#include <io.h> /* for _setmode() under Windows */
|
||||||
#endif
|
#endif
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue