X-Git-Url: https://git.danieliu.xyz/?p=smdp.git;a=blobdiff_plain;f=src%2Fviewer.c;h=97e62df7f9114dc354502df634c5f9a0ae66fcd3;hp=447d3fe79414216b8a3a64b2f77b1df8895131a9;hb=51b2a847fc5798c5b0f56ae93f6e1355038df840;hpb=7a9808cc461b257003de5980efe952e96caa5fbe diff --git a/src/viewer.c b/src/viewer.c index 447d3fe..97e62df 100644 --- a/src/viewer.c +++ b/src/viewer.c @@ -22,10 +22,10 @@ */ #include // isalnum -#include // setlocale -#include // strchr +#include // wcschr +#include // iswalnum +#include // strcpy #include // usleep - #include "viewer.h" // color ramp for fading from black to color @@ -60,7 +60,7 @@ static short red_ramp_invert[24] = { 15, 231, 231, 224, 224, 225, 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 ncurses_display(deck_t *deck, int notrans, int nofade, int invert, int reload, int noreload) { int c = 0; // char int i = 0; // iterate @@ -73,6 +73,7 @@ int ncurses_display(deck_t *deck, int notrans, int nofade, int invert) { int max_lines = 0; // max lines per slide 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; @@ -83,9 +84,6 @@ int ncurses_display(deck_t *deck, int notrans, int nofade, int invert) { slide_t *slide = deck->slide; line_t *line; - // set locale to display UTF-8 correctly in ncurses - setlocale(LC_CTYPE, ""); - // init ncurses initscr(); @@ -93,7 +91,14 @@ int ncurses_display(deck_t *deck, int notrans, int nofade, int invert) { lc = 0; line = slide->line; - while(line) { + while(line && line->text) { + + if (line->text->value) + lc += url_count_inline(line->text->value); + + if (line->text->value) + line->length -= url_len_inline(line->text->value); + if(line->length > COLS) { i = line->length; offset = 0; @@ -110,10 +115,11 @@ int ncurses_display(deck_t *deck, int notrans, int nofade, int invert) { endwin(); // print error - fprintf(stderr, "Error: Terminal width (%i columns) too small. Need at least %i columns.\n", COLS, i); - fprintf(stderr, "You may need to shorten some lines by inserting line breaks.\n"); + 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"); - return 1; + // no reload + return 0; } // set max_cols @@ -146,10 +152,11 @@ int ncurses_display(deck_t *deck, int notrans, int nofade, int invert) { endwin(); // print error - fprintf(stderr, "Error: Terminal height (%i lines) too small. Need at least %i lines.\n", LINES, max_lines + bar_top + bar_bottom); - fprintf(stderr, "You may need to add additional horizontal rules ('***') to split your file in shorter slides.\n"); + fwprintf(stderr, L"Error: Terminal height (%i lines) too small. Need at least %i lines.\n", LINES, max_lines + bar_top + bar_bottom); + fwprintf(stderr, L"You may need to add additional horizontal rules (---) to split your file in shorter slides.\n"); - return 1; + // no reload + return 0; } // disable cursor @@ -233,7 +240,21 @@ int ncurses_display(deck_t *deck, int notrans, int nofade, int invert) { wbkgd(content, COLOR_PAIR(CP_WHITE)); slide = deck->slide; + + // find slide to reload + 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); @@ -246,9 +267,9 @@ int ncurses_display(deck_t *deck, int notrans, int nofade, int invert) { 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 @@ -256,26 +277,49 @@ int ncurses_display(deck_t *deck, int notrans, int nofade, int invert) { 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]); + mvwaddwstr(stdscr, + LINES - 1, 3, + &line->text->value[offset]); } + // add slide number to right footer mvwprintw(stdscr, LINES - 1, COLS - int_length(deck->slides) - int_length(sc) - 6, "%d / %d", sc, deck->slides); // make header + fooder visible + wrefresh(content); wrefresh(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); + + // 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; + + // only stop here if we didn't stop here recently + if(stop > slide->stop) + break; + } + + // print pandoc URL references + // only if we already printed all lines of the current slide + if(!line) { + 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)); + } } // make content visible @@ -296,7 +340,7 @@ int ncurses_display(deck_t *deck, int notrans, int nofade, int invert) { i = 0; switch(c) { - // show previous slide + // show previous slide or stop bit case KEY_UP: case KEY_LEFT: case KEY_PPAGE: @@ -305,15 +349,23 @@ int ncurses_display(deck_t *deck, int notrans, int nofade, int invert) { case 263: // BACKSPACE (getty) case 'h': case 'k': - if(slide->prev) { - slide = slide->prev; - sc--; + if(stop > 1 || (stop == 1 && !line)) { + // show current slide again + // but stop one stop bit earlier + slide->stop--; } else { - fade = false; + if(slide->prev) { + // show previous slide + slide = slide->prev; + sc--; + } else { + // do nothing + fade = false; + } } break; - // show next slide + // show next slide or stop bit case KEY_DOWN: case KEY_RIGHT: case KEY_NPAGE: @@ -321,25 +373,34 @@ int ncurses_display(deck_t *deck, int notrans, int nofade, int invert) { case ' ': // SPACE case 'j': case 'l': - if(slide->next) { - slide = slide->next; - sc++; + if(stop && line) { + // show current slide again + // but stop one stop bit later (or at end of slide) + slide->stop++; } else { - fade = false; + if(slide->next) { + // show next slide + slide = slide->next; + sc++; + } else { + // do nothing + fade = false; + } } break; // 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) { + case '9': + case '8': + case '7': + case '6': + case '5': + case '4': + case '3': + case '2': + case '1': + i = get_slide_number(c); + if(i > 0 && i <= deck->slides) { while(sc != i) { // search forward if(sc < i) { @@ -362,12 +423,14 @@ int ncurses_display(deck_t *deck, int notrans, int nofade, int invert) { break; // show first slide + case 'g': case KEY_HOME: slide = deck->slide; sc = 1; break; // show last slide + case 'G': case KEY_END: for(i = sc; i <= deck->slides; i++) { if(slide->next) { @@ -377,10 +440,24 @@ int ncurses_display(deck_t *deck, int notrans, int nofade, int invert) { } break; + // reload + case 'r': + if(noreload == 0) { + // reload slide N + reload = sc; + slide = NULL; + } else { + // disable fading if reload is not possible + fade = false; + } + break; + // quit case 'q': // do not fade out on exit fade = false; + // do not reload + reload = 0; slide = NULL; break; @@ -393,16 +470,25 @@ int ncurses_display(deck_t *deck, int notrans, int nofade, int invert) { // 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 add_line(WINDOW *window, int y, int x, line_t *line, int max_cols, int colors) { - if(!line->text->text) { + if(!line->text->value) { return; } @@ -430,7 +516,7 @@ void add_line(WINDOW *window, int y, int x, line_t *line, int max_cols, int colo "%s", prompt); if(!CHECK_BIT(line->bits, IS_CODE)) - inline_display(window, &line->text->text[offset], colors); + inline_display(window, &line->text->value[offset], colors); // IS_UNORDERED_LIST_2 } else if(CHECK_BIT(line->bits, IS_UNORDERED_LIST_2)) { @@ -449,7 +535,7 @@ void add_line(WINDOW *window, int y, int x, line_t *line, int max_cols, int colo "%s", prompt); if(!CHECK_BIT(line->bits, IS_CODE)) - inline_display(window, &line->text->text[offset], colors); + inline_display(window, &line->text->value[offset], colors); // IS_UNORDERED_LIST_1 } else if(CHECK_BIT(line->bits, IS_UNORDERED_LIST_1)) { @@ -467,7 +553,7 @@ void add_line(WINDOW *window, int y, int x, line_t *line, int max_cols, int colo "%s", prompt); if(!CHECK_BIT(line->bits, IS_CODE)) - inline_display(window, &line->text->text[offset], colors); + inline_display(window, &line->text->value[offset], colors); } // IS_CODE @@ -481,8 +567,7 @@ void add_line(WINDOW *window, int y, int x, line_t *line, int max_cols, int colo wattron(window, COLOR_PAIR(CP_BLACK)); // print whole lines - wprintw(window, - "%s", &line->text->text[offset]); + waddwstr(window, &line->text->value[offset]); } if(!CHECK_BIT(line->bits, IS_UNORDERED_LIST_1) && @@ -492,7 +577,7 @@ void add_line(WINDOW *window, int y, int x, line_t *line, int max_cols, int colo // IS_QUOTE if(CHECK_BIT(line->bits, IS_QUOTE)) { - while(line->text->text[offset] == '>') { + while(line->text->value[offset] == '>') { // print a reverse color block if(colors) { wattron(window, COLOR_PAIR(CP_BLACK)); @@ -505,11 +590,11 @@ void add_line(WINDOW *window, int y, int x, line_t *line, int max_cols, int colo // find next quote or break offset++; - if(line->text->text[offset] == ' ') + if(line->text->value[offset] == ' ') offset = next_word(line->text, offset); } - inline_display(window, &line->text->text[offset], colors); + inline_display(window, &line->text->value[offset], colors); } else { // IS_CENTER @@ -531,26 +616,28 @@ void add_line(WINDOW *window, int y, int x, line_t *line, int max_cols, int colo 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 - wprintw(window, - "%s", &line->text->text[offset]); + waddwstr(window, &line->text->value[offset]); wattroff(window, A_UNDERLINE); // no line-wide markdown } else { - inline_display(window, &line->text->text[offset], colors); + inline_display(window, &line->text->value[offset], colors); } } } // fill rest off line with spaces - for(i = getcurx(window) - x; i < max_cols; i++) - wprintw(window, "%s", " "); + // we only need this if the color is inverted (e.g. code-blocks), + // to ensure the background fades too + if(CHECK_BIT(line->bits, IS_CODE)) + for(i = getcurx(window) - x; i < max_cols; i++) + wprintw(window, "%s", " "); // reset to default color if(colors) @@ -558,9 +645,11 @@ void add_line(WINDOW *window, int y, int x, line_t *line, int max_cols, int colo wattroff(window, A_UNDERLINE); } -void inline_display(WINDOW *window, const char *c, const int colors) { - const static char *special = "\\*_`"; // list of interpreted chars - const char *i = c; // iterator +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(); @@ -568,29 +657,29 @@ void inline_display(WINDOW *window, const char *c, const int colors) { for(; *i; i++) { // if char is in special char list - if(strchr(special, *i)) { + if(wcschr(special, *i)) { // closing special char (or second backslash) // only if not followed by :alnum: if((stack->top)(stack, *i) && - (!isalnum(*(i + 1)) || *(i + 1) == '\0' || *i == '\\')) { + (!iswalnum(i[1]) || *(i + 1) == L'\0' || *i == L'\\')) { switch(*i) { // print escaped backslash - case '\\': - wprintw(window, "%c", *i); + case L'\\': + waddnwstr(window, i, 1); break; // disable highlight - case '*': + case L'*': if(colors) wattron(window, COLOR_PAIR(CP_WHITE)); break; // disable underline - case '_': + case L'_': wattroff(window, A_UNDERLINE); break; // disable inline code - case '`': + case L'`': if(colors) wattron(window, COLOR_PAIR(CP_WHITE)); break; @@ -600,8 +689,8 @@ void inline_display(WINDOW *window, const char *c, const int colors) { (stack->pop)(stack); // treat special as regular char - } else if((stack->top)(stack, '\\')) { - wprintw(window, "%c", *i); + } else if((stack->top)(stack, L'\\')) { + waddnwstr(window, i, 1); // remove backslash from stack (stack->pop)(stack); @@ -611,23 +700,69 @@ void inline_display(WINDOW *window, const char *c, const int colors) { // emphasis or code span can start after new-line or space only // and of cause after another emphasis markup - if(*(i - 1) == ' ' || - ((*(i - 1) == '_' || *(i - 1) == '*') && (*(i - 2) == ' ' || (i - 1) == c)) || - *i == '\\' || - i == c) { + //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'(') { + i++; + + // turn higlighting and underlining on + if (colors) + wattron(window, COLOR_PAIR(CP_BLUE)); + 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; - switch(*i) { + 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_WHITE)); + + } else { + wprintw(window, "["); + } + + } else switch(*i) { // enable highlight - case '*': + case L'*': if(colors) wattron(window, COLOR_PAIR(CP_RED)); break; // enable underline - case '_': + case L'_': wattron(window, A_UNDERLINE); break; // enable inline code - case '`': + case L'`': if(colors) wattron(window, COLOR_PAIR(CP_BLACK)); break; @@ -638,17 +773,17 @@ void inline_display(WINDOW *window, const char *c, const int colors) { (stack->push)(stack, *i); } else { - wprintw(window, "%c", *i); + waddnwstr(window, i, 1); } } } else { // remove backslash from stack - if((stack->top)(stack, '\\')) + if((stack->top)(stack, L'\\')) (stack->pop)(stack); // print regular char - wprintw(window, "%c", *i); + waddnwstr(window, i, 1); } } @@ -656,16 +791,16 @@ void inline_display(WINDOW *window, const char *c, const int colors) { while(!(stack->empty)(stack)) { switch((stack->pop)(stack)) { // disable highlight - case '*': + case L'*': if(colors) wattron(window, COLOR_PAIR(CP_WHITE)); break; // disable underline - case '_': + case L'_': wattroff(window, A_UNDERLINE); break; // disable inline code - case '`': + case L'`': if(colors) wattron(window, COLOR_PAIR(CP_WHITE)); break; @@ -738,3 +873,20 @@ int int_length (int val) { } return l; } + +int get_slide_number(char init) { + int retval = init - '0'; + char 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; +}