/*
* Functions necessary to display a deck of slides in different color modes
- * using ncurses. Only white, red, and blue are supported, as they can be
- * faded in 256 color mode.
- * Copyright (C) 2014 Michael Goehler
+ * using ncurses.
+ * Copyright (C) 2018 Michael Goehler
*
* This file is part of mdp.
*
*
*/
-#include <locale.h> // setlocale
-#include <stdlib.h>
-#include <string.h> // strchr
-#include <unistd.h>
-
+#include <ctype.h> // isalnum
+#include <wchar.h> // wcschr
+#include <wctype.h> // iswalnum
+#include <string.h> // strcpy
+#include <unistd.h> // usleep
+#include <stdlib.h> // getenv
#include "viewer.h"
-
-// color ramp for fading from black to color
-static short white_ramp[24] = { 16, 232, 233, 234, 235, 236,
- 237, 238, 239, 240, 241, 242,
- 244, 245, 246, 247, 248, 249,
- 250, 251, 252, 253, 254, 255 };
-
-static short blue_ramp[24] = { 16, 17, 17, 18, 18, 19,
- 19, 20, 20, 21, 27, 33,
- 32, 39, 38, 45, 44, 44,
- 81, 81, 51, 51, 123, 123 };
-
-static short red_ramp[24] = { 16, 52, 52, 53, 53, 89,
- 89, 90, 90, 126, 127, 127,
- 163, 163, 164, 164, 200, 200,
- 201, 201, 207, 207, 213, 213 };
-
-// color ramp for fading from white to color
-static short white_ramp_invert[24] = { 15, 255, 254, 254, 252, 251,
- 250, 249, 248, 247, 246, 245,
- 243, 242, 241, 240, 239, 238,
- 237, 236, 235, 234, 233, 232};
-
-static short blue_ramp_invert[24] = { 15, 231, 231, 195, 195, 159,
- 159, 123, 123, 87, 51, 44,
- 45, 38, 39, 32, 33, 33,
- 26, 26, 27, 27, 21, 21};
-
-static short red_ramp_invert[24] = { 15, 231, 231, 224, 224, 225,
- 225, 218, 218, 219, 212, 213,
- 206, 207, 201, 200, 199, 199,
- 198, 198, 197, 197, 196, 196};
-
-int ncurses_display(deck_t *deck, int notrans, int nofade, int invert) {
-
- int c = 0; // char
- int i = 0; // iterate
- int l = 0; // line number
- int sc = 1; // slide count
- int colors = 0; // amount of colors supported
- int fade = 0; // disable color fading by default
- int trans = -1; // enable transparency if term supports it
- int max_lines = 0; // max lines per slide
- int max_cols = 0; // max columns per line
- int offset; // text offset
+#include "config.h"
+
+int ncurses_display(deck_t *deck, int reload, int noreload, int slidenum) {
+
+ int c = 0; // char
+ int i = 0; // iterate
+ int l = 0; // line number
+ int lc = 0; // line count
+ int sc = 1; // slide count
+ int colors = 0; // amount of colors supported
+ int max_lines = 0; // max lines per slide
+ int max_lines_slide = -1; // the slide that has the most lines
+ int max_cols = 0; // max columns per line
+ int offset; // text offset
+ int stop = 0; // passed stop bits per slide
// header line 1 is displayed at the top
int bar_top = (deck->headers > 0) ? 1 : 0;
// header line 2 is displayed at the bottom
// anyway we display the slide number at the bottom
- int bar_bottom = 1;
+ int bar_bottom = (slidenum || deck->headers > 1)? 1 : 0;
slide_t *slide = deck->slide;
line_t *line;
+ // init ncurses
+ initscr();
+
while(slide) {
- // set max_lines if line count exceeded
- max_lines = (slide->lines > max_lines) ? slide->lines : max_lines;
+ lc = 0;
line = slide->line;
- while(line) {
- // set max_cols if length exceeded
- max_cols = (line->length > max_cols) ? line->length : max_cols;
+
+ while(line && line->text) {
+
+ if (line->text->value) {
+ lc += url_count_inline(line->text->value);
+ line->length -= url_len_inline(line->text->value);
+ }
+
+ if(line->length > COLS) {
+ i = line->length;
+ offset = 0;
+ while(i > COLS) {
+
+ i = prev_blank(line->text, offset + COLS) - offset;
+
+ // single word is > COLS
+ if(!i) {
+ // calculate min_width
+ i = next_blank(line->text, offset + COLS) - offset;
+
+ // disable ncurses
+ endwin();
+
+ // print error
+ fwprintf(stderr, L"Error: Terminal width (%i columns) too small. Need at least %i columns.\n", COLS, i);
+ fwprintf(stderr, L"You may need to shorten some lines by inserting line breaks.\n");
+
+ // no reload
+ return 0;
+ }
+
+ // set max_cols
+ max_cols = MAX(i, max_cols);
+
+ // iterate to next line
+ offset = prev_blank(line->text, offset + COLS);
+ i = line->length - offset;
+ lc++;
+ }
+ // set max_cols one last time
+ max_cols = MAX(i, max_cols);
+ } else {
+ // set max_cols
+ max_cols = MAX(line->length, max_cols);
+ }
+ lc++;
line = line->next;
}
- slide = slide->next;
- }
- // set locale to display UTF-8 correctly in ncurses
- setlocale(LC_CTYPE, "");
+ max_lines = MAX(lc, max_lines);
+ if (lc == max_lines) {
+ max_lines_slide = sc;
+ }
- // init ncurses
- initscr();
+ slide->lines_consumed = lc;
+ slide = slide->next;
+ ++sc;
+ }
- if((max_cols > COLS) ||
- (max_lines + bar_top + bar_bottom + 2 > LINES)) {
+ // not enough lines
+ if(max_lines + bar_top + bar_bottom > LINES) {
// disable ncurses
endwin();
// print error
- fprintf(stderr, "Error: Terminal size %ix%i too small. Need at least %ix%i.\n",
- COLS, LINES, max_cols, max_lines + bar_top + bar_bottom + 2);
+ fwprintf(stderr, L"Error: Terminal height (%i lines) too small. Need at least %i lines for slide #%i.\n", LINES, max_lines + bar_top + bar_bottom, max_lines_slide);
+ fwprintf(stderr, L"You may need to add additional horizontal rules (---) to split your file in shorter slides.\n");
- // print hint to solve it
- if(max_lines + bar_top + bar_bottom + 2 > LINES)
- fprintf(stderr, "You may need to add additional horizontal rules ('***') to split your file in shorter slides.\n");
- if(max_cols > COLS)
- fprintf(stderr, "Automatic line wrapping is not supported yet. You may need to shorten some lines by inserting line breaks.\n");
-
- return(1);
+ // no reload
+ return 0;
}
// disable cursor
start_color();
use_default_colors();
- // 256 color mode
- if(COLORS == 256) {
-
- if(notrans) {
- if(invert) {
- trans = 15; // white in 256 color mode
- } else {
- trans = 16; // black in 256 color mode
- }
- }
-
- if(invert) {
- init_pair(CP_WHITE, 232, trans);
- init_pair(CP_BLUE, 21, trans);
- init_pair(CP_RED, 196, trans);
- init_pair(CP_BLACK, 15, 232);
- } else {
- init_pair(CP_WHITE, 255, trans);
- init_pair(CP_BLUE, 123, trans);
- init_pair(CP_RED, 213, trans);
- init_pair(CP_BLACK, 16, 255);
- }
- init_pair(CP_YELLOW, 208, trans);
-
- // enable color fading
- if(!nofade) fade = 1;
-
- // 8 color mode
- } else {
-
- if(notrans) {
- if(invert) {
- trans = 7; // white in 8 color mode
- } else {
- trans = 0; // black in 8 color mode
- }
- }
-
- if(invert) {
- init_pair(CP_WHITE, 0, trans);
- init_pair(CP_BLACK, 7, 0);
- } else {
- init_pair(CP_WHITE, 7, trans);
- init_pair(CP_BLACK, 0, 7);
- }
- init_pair(CP_BLUE, 4, trans);
- init_pair(CP_RED, 1, trans);
- init_pair(CP_YELLOW, 3, trans);
- }
+ init_pair(CP_FG, FG_COLOR, BG_COLOR);
+ init_pair(CP_HEADER, HEADER_COLOR, BG_COLOR);
+ init_pair(CP_BOLD, BOLD_COLOR, BG_COLOR);
+ init_pair(CP_TITLE, TITLE_COLOR, BG_COLOR);
+ init_pair(CP_CODE, CODEFG_COLOR, CODEBG_COLOR);
colors = 1;
}
- // set background color of main window
+ // set background color for main window
if(colors)
- wbkgd(stdscr, COLOR_PAIR(CP_YELLOW));
+ wbkgd(stdscr, COLOR_PAIR(CP_FG));
- // setup main window
+ // setup content window
WINDOW *content = newwin(LINES - bar_top - bar_bottom, COLS, 0 + bar_top, 0);
+
+ // set background color of content window
if(colors)
- wbkgd(content, COLOR_PAIR(CP_WHITE));
+ wbkgd(content, COLOR_PAIR(CP_FG));
slide = deck->slide;
+
+ // find slide to reload
+ sc = 1;
+ while(reload > 1 && reload <= deck->slides) {
+ slide = slide->next;
+ sc++;
+ reload--;
+ }
+
+ // reset reload indicator
+ reload = 0;
+
while(slide) {
+
+ url_init();
+
// clear windows
werase(content);
werase(stdscr);
// always resize window in case terminal geometry has changed
wresize(content, LINES - bar_top - bar_bottom, COLS);
+ // set main window text color
+ if(colors)
+ wattron(stdscr, COLOR_PAIR(CP_TITLE));
+
// setup header
if(bar_top) {
line = deck->header;
offset = next_blank(line->text, 0) + 1;
// add text to header
- mvwprintw(stdscr,
- 0, (COLS - line->length + offset) / 2,
- "%s", &line->text->text[offset]);
+ mvwaddwstr(stdscr,
+ 0, (COLS - line->length + offset) / 2,
+ &line->text->value[offset]);
}
// setup footer
if(deck->headers > 1) {
line = deck->header->next;
offset = next_blank(line->text, 0) + 1;
- // add text to left footer
- mvwprintw(stdscr,
- LINES - 1, 3,
- "%s", &line->text->text[offset]);
+ switch(slidenum) {
+ case 0: // add text to center footer
+ mvwaddwstr(stdscr,
+ LINES - 1, (COLS - line->length + offset) / 2,
+ &line->text->value[offset]);
+ break;
+ case 1:
+ case 2: // add text to left footer
+ mvwaddwstr(stdscr,
+ LINES - 1, 3,
+ &line->text->value[offset]);
+ break;
+ }
}
+
// add slide number to right footer
- mvwprintw(stdscr,
- LINES - 1, COLS - int_length(deck->slides) - int_length(sc) - 6,
- "%d / %d", sc, deck->slides);
+ switch(slidenum) {
+ case 1: // show slide number only
+ mvwprintw(stdscr,
+ LINES - 1, COLS - int_length(sc) - 3,
+ "%d", sc);
+ break;
+ case 2: // show current slide & number of slides
+ mvwprintw(stdscr,
+ LINES - 1, COLS - int_length(deck->slides) - int_length(sc) - 6,
+ "%d / %d", sc, deck->slides);
+ break;
+ }
- // make header + fooder visible
- wrefresh(stdscr);
+ // copy changed lines in main window to virtual screen
+ wnoutrefresh(stdscr);
line = slide->line;
- l = 0;
+ l = stop = 0;
// print lines
while(line) {
- add_line(content, l, (COLS - max_cols) / 2, line, max_cols, colors);
+ add_line(content, l + ((LINES - slide->lines_consumed - bar_top - bar_bottom) / 2),
+ (COLS - max_cols) / 2, line, max_cols, colors);
+
+ // raise stop counter if we pass a line having a stop bit
+ if(CHECK_BIT(line->bits, IS_STOP))
+ stop++;
+
+ l += (line->length / COLS) + 1;
line = line->next;
- l++;
+
+ // only stop here if we didn't stop here recently
+ if(stop > slide->stop)
+ break;
}
- // make content visible
- wrefresh(content);
+ // print pandoc URL references
+ // only if we already printed all lines of the current slide (or output is stopped)
+ if(!line ||
+ stop > slide->stop) {
+ int i, ymax;
+ getmaxyx( content, ymax, i );
+ for (i = 0; i < url_get_amount(); i++) {
+ mvwprintw(content, ymax - url_get_amount() - 1 + i, 3,
+ "[%d] ", i);
+ waddwstr(content, url_get_target(i));
+ }
+ }
- // fade in
- if(fade)
- fade_in(content, trans, colors, invert);
+ // copy changed lines in content window to virtual screen
+ wnoutrefresh(content);
- // re-enable fading after any undefined key press
- if(COLORS == 256 && !nofade) fade = 1;
+ // compare virtual screen to physical screen and does the actual updates
+ doupdate();
// wait for user input
c = getch();
// evaluate user input
i = 0;
- switch(c) {
-
- // show previous slide
- case KEY_UP:
- case KEY_LEFT:
- case 8: // BACKSPACE (ascii)
- case 127: // BACKSPACE (xterm)
- case 263: // BACKSPACE (getty)
- case 'h':
- case 'k':
+
+ if (evaluate_binding(prev_slide_binding, c)) {
+ // show previous slide or stop bit
+ if(stop > 1 || (stop == 1 && !line)) {
+ // show current slide again
+ // but stop one stop bit earlier
+ slide->stop--;
+ } else {
if(slide->prev) {
+ // show previous slide
slide = slide->prev;
sc--;
- } else {
- fade = 0;
+ //stop on first bullet point always
+ if(slide->stop > 0)
+ slide->stop = 0;
}
- break;
-
- // show next slide
- case KEY_DOWN:
- case KEY_RIGHT:
- case '\n': // ENTER
- case ' ': // SPACE
- case 'j':
- case 'l':
+ }
+ } else if (evaluate_binding(next_slide_binding, c)) {
+ // show next slide or stop bit
+ if(stop && line) {
+ // show current slide again
+ // but stop one stop bit later (or at end of slide)
+ slide->stop++;
+ } else {
if(slide->next) {
+ // show next slide
slide = slide->next;
sc++;
- } else {
- fade = 0;
}
- break;
-
+ }
+ } else if (isdigit(c) && c != '0') {
// show slide n
- case '9': i++;
- case '8': i++;
- case '7': i++;
- case '6': i++;
- case '5': i++;
- case '4': i++;
- case '3': i++;
- case '2': i++;
- case '1': i++;
- if(i <= deck->slides) {
- while(sc != i) {
- // search forward
- if(sc < i) {
- if(slide->next) {
- slide = slide->next;
- sc++;
- }
- // search backward
- } else {
- if(slide->prev) {
- slide = slide->prev;
- sc--;
- }
+ i = get_slide_number(c);
+ if(i > 0 && i <= deck->slides) {
+ while(sc != i) {
+ // search forward
+ if(sc < i) {
+ if(slide->next) {
+ slide = slide->next;
+ sc++;
+ }
+ // search backward
+ } else {
+ if(slide->prev) {
+ slide = slide->prev;
+ sc--;
}
}
- } else {
- // disable fading if slide n doesn't exist
- fade = 0;
}
- break;
-
+ }
+ } else if (evaluate_binding(first_slide_binding, c)) {
// show first slide
- case KEY_HOME:
- slide = deck->slide;
- sc = 1;
- break;
-
+ slide = deck->slide;
+ sc = 1;
+ } else if (evaluate_binding(last_slide_binding, c)) {
// show last slide
- case KEY_END:
- for(i = sc; i <= deck->slides; i++) {
- if(slide->next) {
- slide = slide->next;
- sc++;
- }
+ for(i = sc; i <= deck->slides; i++) {
+ if(slide->next) {
+ slide = slide->next;
+ sc++;
}
- break;
-
+ }
+ } else if (evaluate_binding(reload_binding, c)) {
+ // reload
+ if(noreload == 0) {
+ // reload slide N
+ reload = sc;
+ slide = NULL;
+ }
+ } else if (evaluate_binding(quit_binding, c)) {
// quit
- case 'q':
- // do not fade out on exit
- fade = 0;
- slide = (void*)0;
- break;
-
- default:
- // disable fading on undefined key press
- fade = 0;
- break;
+ // do not reload
+ reload = 0;
+ slide = NULL;
}
- // fade out
- if(fade)
- fade_out(content, trans, colors, invert);
+ url_purge();
}
+ // disable ncurses
endwin();
- return(0);
+ // free ncurses memory
+ delwin(content);
+ if(reload == 0)
+ delwin(stdscr);
+
+ // return reload indicator (0 means no reload)
+ return reload;
+}
+
+void setup_list_strings(void)
+{
+ const char *str;
+
+ /* utf8 can require 6 bytes */
+ if ((str = getenv("MDP_LIST_OPEN")) != NULL && strlen(str) <= 4*6) {
+ list_open1 = list_open2 = list_open3 = str;
+ } else {
+ if ((str = getenv("MDP_LIST_OPEN1")) != NULL && strlen(str) <= 4*6)
+ list_open1 = str;
+ if ((str = getenv("MDP_LIST_OPEN2")) != NULL && strlen(str) <= 4*6)
+ list_open2 = str;
+ if ((str = getenv("MDP_LIST_OPEN3")) != NULL && strlen(str) <= 4*6)
+ list_open3 = str;
+ }
+ if ((str = getenv("MDP_LIST_HEAD")) != NULL && strlen(str) <= 4*6) {
+ list_head1 = list_head2 = list_head3 = str;
+ } else {
+ if ((str = getenv("MDP_LIST_HEAD1")) != NULL && strlen(str) <= 4*6)
+ list_head1 = str;
+ if ((str = getenv("MDP_LIST_HEAD2")) != NULL && strlen(str) <= 4*6)
+ list_head2 = str;
+ if ((str = getenv("MDP_LIST_HEAD3")) != NULL && strlen(str) <= 4*6)
+ list_head3 = str;
+ }
}
void add_line(WINDOW *window, int y, int x, line_t *line, int max_cols, int colors) {
- int i = 0; // increment
- char *c; // char pointer for iteration
- char *special = "\\*_`"; // list of interpreted chars
- cstack_t *stack = cstack_init();
- if(line->text->text) {
- int offset = 0; // text offset
+ int i; // increment
+ int offset = 0; // text offset
+
+ // move the cursor in position
+ wmove(window, y, x);
+
+ if(!line->text->value) {
+
+ // fill rest off line with spaces if we are in a code block
+ if(CHECK_BIT(line->bits, IS_CODE) && colors) {
+ wattron(window, COLOR_PAIR(CP_CODE));
+ for(i = getcurx(window) - x; i < max_cols; i++)
+ wprintw(window, "%s", " ");
+ }
+
+ // do nothing
+ return;
+ }
+
+ // IS_UNORDERED_LIST_3
+ if(CHECK_BIT(line->bits, IS_UNORDERED_LIST_3)) {
+ offset = next_nonblank(line->text, 0);
+ char prompt[13 * 6];
+ int pos = 0, len, cnt;
+ len = sizeof(prompt) - pos;
+ cnt = snprintf(&prompt[pos], len, "%s", CHECK_BIT(line->bits, IS_UNORDERED_LIST_1)? list_open1 : " ");
+ pos += (cnt > len - 1 ? len - 1 : cnt);
+ len = sizeof(prompt) - pos;
+ cnt = snprintf(&prompt[pos], len, "%s", CHECK_BIT(line->bits, IS_UNORDERED_LIST_2)? list_open2 : " ");
+ pos += (cnt > len - 1 ? len - 1 : cnt);
+ len = sizeof(prompt) - pos;
+
+ if(CHECK_BIT(line->bits, IS_UNORDERED_LIST_EXT)) {
+ snprintf(&prompt[pos], len, "%s", line->next && CHECK_BIT(line->next->bits, IS_UNORDERED_LIST_3)? list_open3 : " ");
+ } else {
+ snprintf(&prompt[pos], len, "%s", list_head3);
+ offset += 2;
+ }
+
+ wprintw(window,
+ "%s", prompt);
+
+ if(!CHECK_BIT(line->bits, IS_CODE))
+ inline_display(window, &line->text->value[offset], colors);
+
+ // IS_UNORDERED_LIST_2
+ } else if(CHECK_BIT(line->bits, IS_UNORDERED_LIST_2)) {
+ offset = next_nonblank(line->text, 0);
+ char prompt[9 * 6];
+ int pos = 0, len, cnt;
+ len = sizeof(prompt) - pos;
+ cnt = snprintf(&prompt[pos], len, "%s", CHECK_BIT(line->bits, IS_UNORDERED_LIST_1)? list_open1 : " ");
+ pos += (cnt > len - 1 ? len - 1 : cnt);
+ len = sizeof(prompt) - pos;
+
+ if(CHECK_BIT(line->bits, IS_UNORDERED_LIST_EXT)) {
+ snprintf(&prompt[pos], len, "%s", line->next && CHECK_BIT(line->next->bits, IS_UNORDERED_LIST_2)? list_open2 : " ");
+ } else {
+ snprintf(&prompt[pos], len, "%s", list_head2);
+ offset += 2;
+ }
+
+ wprintw(window,
+ "%s", prompt);
+
+ if(!CHECK_BIT(line->bits, IS_CODE))
+ inline_display(window, &line->text->value[offset], colors);
+
+ // IS_UNORDERED_LIST_1
+ } else if(CHECK_BIT(line->bits, IS_UNORDERED_LIST_1)) {
+ offset = next_nonblank(line->text, 0);
+ char prompt[5 * 6];
- // IS_CODE
- if(CHECK_BIT(line->bits, IS_CODE)) {
+ if(CHECK_BIT(line->bits, IS_UNORDERED_LIST_EXT)) {
+ strcpy(&prompt[0], line->next && CHECK_BIT(line->next->bits, IS_UNORDERED_LIST_1)? list_open1 : " ");
+ } else {
+ strcpy(&prompt[0], list_head1);
+ offset += 2;
+ }
+ wprintw(window,
+ "%s", prompt);
+
+ if(!CHECK_BIT(line->bits, IS_CODE))
+ inline_display(window, &line->text->value[offset], colors);
+ }
+
+ // IS_CODE
+ if(CHECK_BIT(line->bits, IS_CODE)) {
+
+ if (!CHECK_BIT(line->bits, IS_TILDE_CODE) &&
+ !CHECK_BIT(line->bits, IS_GFM_CODE)) {
// set static offset for code
offset = CODE_INDENT;
+ }
- // reverse color for code blocks
- if(colors)
- wattron(window, COLOR_PAIR(CP_BLACK));
+ // color for code block
+ if (colors)
+ wattron(window, COLOR_PAIR(CP_CODE));
- // print whole lines
- mvwprintw(window,
- y, x,
- "%s", &line->text->text[offset]);
+ // print whole lines
+ waddwstr(window, &line->text->value[offset]);
+ }
+
+ if(!CHECK_BIT(line->bits, IS_UNORDERED_LIST_1) &&
+ !CHECK_BIT(line->bits, IS_UNORDERED_LIST_2) &&
+ !CHECK_BIT(line->bits, IS_UNORDERED_LIST_3) &&
+ !CHECK_BIT(line->bits, IS_CODE)) {
+
+ // IS_QUOTE
+ if(CHECK_BIT(line->bits, IS_QUOTE)) {
+ while(line->text->value[offset] == '>') {
+ // print a code block
+ if(colors) {
+ wattron(window, COLOR_PAIR(CP_CODE));
+ wprintw(window, "%s", " ");
+ wattron(window, COLOR_PAIR(CP_FG));
+ wprintw(window, "%s", " ");
+ } else {
+ wprintw(window, "%s", ">");
+ }
+
+ // find next quote or break
+ offset++;
+ if(line->text->value[offset] == ' ')
+ offset = next_word(line->text, offset);
+ }
+ inline_display(window, &line->text->value[offset], colors);
} else {
+ // IS_CENTER
+ if(CHECK_BIT(line->bits, IS_CENTER)) {
+ if(line->length < max_cols) {
+ wmove(window, y, x + ((max_cols - line->length) / 2));
+ }
+ }
+
// IS_H1 || IS_H2
if(CHECK_BIT(line->bits, IS_H1) || CHECK_BIT(line->bits, IS_H2)) {
// set headline color
if(colors)
- wattron(window, COLOR_PAIR(CP_BLUE));
+ wattron(window, COLOR_PAIR(CP_HEADER));
// enable underline for H1
if(CHECK_BIT(line->bits, IS_H1))
wattron(window, A_UNDERLINE);
// skip hashes
- while(line->text->text[offset] == '#')
+ while(line->text->value[offset] == '#')
offset = next_word(line->text, offset);
// print whole lines
- mvwprintw(window,
- y, x,
- "%s", &line->text->text[offset]);
+ waddwstr(window, &line->text->value[offset]);
wattroff(window, A_UNDERLINE);
+ // no line-wide markdown
} else {
- // move the cursor in position
- wmove(window, y, x);
-
- // IS_QUOTE
- if(CHECK_BIT(line->bits, IS_QUOTE)) {
- while(line->text->text[offset] == '>') {
- // print a reverse color block
- if(colors) {
- wattron(window, COLOR_PAIR(CP_BLACK));
- wprintw(window, "%s", " ");
- wattron(window, COLOR_PAIR(CP_WHITE));
- wprintw(window, "%s", " ");
- } else {
- wprintw(window, "%s", ">");
- }
- // find next quote or break
- offset++;
- if(line->text->text[offset] == ' ')
- offset = next_word(line->text, offset);
- }
- }
+ inline_display(window, &line->text->value[offset], colors);
+ }
+ }
+ }
- // for each char in line
- c = &line->text->text[offset];
- while(*c) {
-
- // if char is in special char list
- if(strchr(special, *c)) {
-
- // closing special char (or second backslash)
- if((stack->top)(stack, *c)) {
-
- switch(*c) {
- // print escaped backslash
- case '\\':
- wprintw(window, "%c", *c);
- break;
- // disable highlight
- case '*':
- if(colors)
- wattron(window, COLOR_PAIR(CP_WHITE));
- break;
- // disable underline
- case '_':
- wattroff(window, A_UNDERLINE);
- break;
- // disable inline code
- case '`':
- if(colors)
- wattron(window, COLOR_PAIR(CP_WHITE));
- break;
- }
-
- // remove top special char from stack
- (stack->pop)(stack);
-
- // treat special as regular char
- } else if((stack->top)(stack, '\\')) {
- wprintw(window, "%c", *c);
-
- // remove backslash from stack
- (stack->pop)(stack);
-
- // opening special char
- } else {
- switch(*c) {
- // enable highlight
- case '*':
- if(colors)
- wattron(window, COLOR_PAIR(CP_RED));
- break;
- // enable underline
- case '_':
- wattron(window, A_UNDERLINE);
- break;
- // enable inline code
- case '`':
- if(colors)
- wattron(window, COLOR_PAIR(CP_BLACK));
- break;
- // do nothing for backslashes
- }
-
- // push special char to stack
- (stack->push)(stack, *c);
- }
+ // fill rest off line with spaces
+ // we only need this if the color is inverted (e.g. code-blocks)
+ if(CHECK_BIT(line->bits, IS_CODE))
+ for(i = getcurx(window) - x; i < max_cols; i++)
+ wprintw(window, "%s", " ");
- } else {
- // remove backslash from stack
- if((stack->top)(stack, '\\'))
- (stack->pop)(stack);
+ // reset to default color
+ if(colors)
+ wattron(window, COLOR_PAIR(CP_FG));
+ wattroff(window, A_UNDERLINE);
+}
+
+void inline_display(WINDOW *window, const wchar_t *c, const int colors) {
+ const static wchar_t *special = L"\\*_`!["; // list of interpreted chars
+ const wchar_t *i = c; // iterator
+ const wchar_t *start_link_name, *start_url;
+ int length_link_name, url_num;
+ cstack_t *stack = cstack_init();
- // print regular char
- wprintw(window, "%c", *c);
- }
- c++;
+ // for each char in line
+ for(; *i; i++) {
+
+ // if char is in special char list
+ if(wcschr(special, *i)) {
+
+ // closing special char (or second backslash)
+ // only if not followed by :alnum:
+ if((stack->top)(stack, *i) &&
+ (!iswalnum(i[1]) || *(i + 1) == L'\0' || *i == L'\\')) {
+
+ switch(*i) {
+ // print escaped backslash
+ case L'\\':
+ waddnwstr(window, i, 1);
+ break;
+ // disable highlight
+ case L'*':
+ if(colors)
+ wattron(window, COLOR_PAIR(CP_FG));
+ break;
+ // disable underline
+ case L'_':
+ wattroff(window, A_UNDERLINE);
+ break;
+ // disable inline code
+ case L'`':
+ if(colors)
+ wattron(window, COLOR_PAIR(CP_FG));
+ break;
}
- // pop stack until empty to prevent formated trailing spaces
- while(!(stack->empty)(stack)) {
- switch((stack->pop)(stack)) {
- // disable highlight
- case '*':
+ // remove top special char from stack
+ (stack->pop)(stack);
+
+ // treat special as regular char
+ } else if((stack->top)(stack, L'\\')) {
+ waddnwstr(window, i, 1);
+
+ // remove backslash from stack
+ (stack->pop)(stack);
+
+ // opening special char
+ } else {
+
+ // emphasis or code span can start after new-line or space only
+ // and of cause after another emphasis markup
+ //TODO this condition looks ugly
+ if(i == c ||
+ iswspace(*(i - 1)) ||
+ ((iswspace(*(i - 1)) || *(i - 1) == L'*' || *(i - 1) == L'_') &&
+ ((i - 1) == c || iswspace(*(i - 2)))) ||
+ *i == L'\\') {
+
+ // url in pandoc style
+ if ((*i == L'[' && wcschr(i, L']')) ||
+ (*i == L'!' && *(i + 1) == L'[' && wcschr(i, L']'))) {
+
+ if (*i == L'!') i++;
+
+ if (wcschr(i, L']')[1] == L'(' && wcschr(i, L')')) {
+ i++;
+
+ // turn higlighting and underlining on
+ if (colors)
+ wattron(window, COLOR_PAIR(CP_HEADER));
+ wattron(window, A_UNDERLINE);
+
+ start_link_name = i;
+
+ // print the content of the label
+ // the label is printed as is
+ do {
+ waddnwstr(window, i, 1);
+ i++;
+ } while (*i != L']');
+
+ length_link_name = i - 1 - start_link_name;
+
+ i++;
+ i++;
+
+ start_url = i;
+
+ while (*i != L')') i++;
+
+ url_num = url_add(start_link_name, length_link_name, start_url, i - start_url, 0, 0);
+
+ wprintw(window, " [%d]", url_num);
+
+ // turn highlighting and underlining off
+ wattroff(window, A_UNDERLINE);
+ wattron(window, COLOR_PAIR(CP_FG));
+
+ } else {
+ wprintw(window, "[");
+ }
+
+ } else switch(*i) {
+ // enable highlight
+ case L'*':
if(colors)
- wattron(window, COLOR_PAIR(CP_WHITE));
+ wattron(window, COLOR_PAIR(CP_BOLD));
break;
- // disable underline
- case '_':
- wattroff(window, A_UNDERLINE);
+ // enable underline
+ case L'_':
+ wattron(window, A_UNDERLINE);
break;
- // disable inline code
- case '`':
- if(colors)
- wattron(window, COLOR_PAIR(CP_WHITE));
+ // enable inline code
+ case L'`':
+ wattron(window, COLOR_PAIR(CP_CODE));
break;
// do nothing for backslashes
}
- }
- }
- }
-
- // fill rest off line with spaces
- for(i = getcurx(window) - x; i < max_cols; i++)
- wprintw(window, "%s", " ");
- // reset to default color
- if(colors)
- wattron(window, COLOR_PAIR(CP_WHITE));
- wattroff(window, A_UNDERLINE);
- }
-
- (stack->delete)(stack);
-}
+ // push special char to stack
+ (stack->push)(stack, *i);
-void fade_out(WINDOW *window, int trans, int colors, int invert) {
- int i; // increment
- if(colors && COLORS == 256) {
- for(i = 22; i >= 0; i--) {
-
- // dim color pairs
- if(invert) {
- init_pair(CP_WHITE, white_ramp_invert[i], trans);
- init_pair(CP_BLUE, blue_ramp_invert[i], trans);
- init_pair(CP_RED, red_ramp_invert[i], trans);
- init_pair(CP_BLACK, 15, white_ramp_invert[i]);
- } else {
- init_pair(CP_WHITE, white_ramp[i], trans);
- init_pair(CP_BLUE, blue_ramp[i], trans);
- init_pair(CP_RED, red_ramp[i], trans);
- init_pair(CP_BLACK, 16, white_ramp[i]);
+ } else {
+ waddnwstr(window, i, 1);
+ }
}
- // refresh window with new color
- wrefresh(window);
+ } else {
+ // remove backslash from stack
+ if((stack->top)(stack, L'\\'))
+ (stack->pop)(stack);
- // delay for our eyes to recognize the change
- usleep(FADE_DELAY);
+ // print regular char
+ waddnwstr(window, i, 1);
}
}
-}
-
-void fade_in(WINDOW *window, int trans, int colors, int invert) {
- int i; // increment
- if(colors && COLORS == 256) {
- for(i = 0; i <= 23; i++) {
-
- // brighten color pairs
- if(invert) {
- init_pair(CP_WHITE, white_ramp_invert[i], trans);
- init_pair(CP_BLUE, blue_ramp_invert[i], trans);
- init_pair(CP_RED, red_ramp_invert[i], trans);
- init_pair(CP_BLACK, 15, white_ramp_invert[i]);
- } else {
- init_pair(CP_WHITE, white_ramp[i], trans);
- init_pair(CP_BLUE, blue_ramp[i], trans);
- init_pair(CP_RED, red_ramp[i], trans);
- init_pair(CP_BLACK, 16, white_ramp[i]);
- }
-
- // refresh window with new color
- wrefresh(window);
- // delay for our eyes to recognize the change
- usleep(FADE_DELAY);
+ // pop stack until empty to prevent formated trailing spaces
+ while(!(stack->empty)(stack)) {
+ switch((stack->pop)(stack)) {
+ // disable highlight
+ case L'*':
+ if(colors)
+ wattron(window, COLOR_PAIR(CP_FG));
+ break;
+ // disable underline
+ case L'_':
+ wattroff(window, A_UNDERLINE);
+ break;
+ // disable inline code
+ case L'`':
+ if(colors)
+ wattron(window, COLOR_PAIR(CP_FG));
+ break;
+ // do nothing for backslashes
}
}
+
+ (stack->delete)(stack);
}
int int_length (int val) {
}
return l;
}
+
+int get_slide_number(char init) {
+ int retval = init - '0';
+ int c;
+ // block for tenths of a second when using getch, ERR if no input
+ halfdelay(GOTO_SLIDE_DELAY);
+ while((c = getch()) != ERR) {
+ if (c < '0' || c > '9') {
+ retval = -1;
+ break;
+ }
+ retval = (retval * 10) + (c - '0');
+ }
+ nocbreak(); // cancel half delay mode
+ cbreak(); // go back to cbreak
+ return retval;
+}
+
+bool evaluate_binding(const int bindings[], char c) {
+ int binding;
+ int ind = 0;
+ while((binding = bindings[ind]) != 0) {
+ if (c == binding) return true;
+ ind++;
+ }
+ return false;
+}
+
