X-Git-Url: http://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=test%2Fclip_printw.c;fp=test%2Fclip_printw.c;h=7af637cc9597a593d2fcf154580aff20ca1a2e78;hp=0000000000000000000000000000000000000000;hb=06ae48ca77d71610e4d86d138a8fd19db84634ce;hpb=e9d205b51699dd452427c908758daa13cccfe2f6 diff --git a/test/clip_printw.c b/test/clip_printw.c new file mode 100644 index 00000000..7af637cc --- /dev/null +++ b/test/clip_printw.c @@ -0,0 +1,360 @@ +/**************************************************************************** + * Copyright (c) 2008 Free Software Foundation, Inc. * + * * + * Permission is hereby granted, free of charge, to any person obtaining a * + * copy of this software and associated documentation files (the * + * "Software"), to deal in the Software without restriction, including * + * without limitation the rights to use, copy, modify, merge, publish, * + * distribute, distribute with modifications, sublicense, and/or sell * + * copies of the Software, and to permit persons to whom the Software is * + * furnished to do so, subject to the following conditions: * + * * + * The above copyright notice and this permission notice shall be included * + * in all copies or substantial portions of the Software. * + * * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * + * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * + * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * + * * + * Except as contained in this notice, the name(s) of the above copyright * + * holders shall not be used in advertising or otherwise to promote the * + * sale, use or other dealings in this Software without prior written * + * authorization. * + ****************************************************************************/ +/* + * $Id: clip_printw.c,v 1.1 2008/12/20 21:03:06 tom Exp $ + * + * demonstrate how to use printw without wrapping. + */ + +#include + +#define SHOW(n) ((n) == ERR ? "ERR" : "OK") +#define COLOR_DEFAULT (-1) + +typedef struct { + unsigned c; + unsigned v; + int status; + int pair; + unsigned attr; + int count; + int ch; + const char *c_msg; + const char *v_msg; + int y_val; + int x_val; + int y_beg, x_beg; + int y_max, x_max; +} STATUS; + +static int +clip_wprintw(WINDOW *win, const char *fmt,...) +{ + int y0, x0, y1, x1, width; + WINDOW *sub; + va_list ap; + int rc; + + /* + * Allocate a single-line derived window extending from the current + * cursor position to the end of the current line in the given window. + * Disable scrolling in the derived window. + */ + getyx(win, y0, x0); + width = getmaxx(win) - x0; + sub = derwin(win, 1, width, y0, x0); + scrollok(sub, FALSE); + + /* + * Print the text. + */ + va_start(ap, fmt); + rc = vw_printw(sub, fmt, ap); + va_end(ap); + + getyx(sub, y1, x1); + delwin(sub); + + wmove(win, y1 + y0, x1 + x0); + + return rc; +} + +static const char * +color_params(unsigned state, int *pair) +{ + /* *INDENT-OFF* */ + static struct { + int pair; + int fg, bg; + const char *msg; + } table[] = { + { 0, COLOR_DEFAULT, COLOR_DEFAULT, "default" }, + { 1, COLOR_RED, COLOR_BLACK, "red/black" }, + { 2, COLOR_WHITE, COLOR_BLUE, "white/blue" }, + }; + /* *INDENT-ON* */ + + static bool first = TRUE; + const char *result = 0; + + if (has_colors()) { + if (first) { + unsigned n; + + start_color(); + for (n = 0; n < SIZEOF(table); ++n) { + init_pair(table[n].pair, table[n].fg, table[n].bg); + } + } + if (state < SIZEOF(table)) { + *pair = table[state].pair; + result = table[state].msg; + } + } + return result; +} + +static const char * +video_params(unsigned state, unsigned *attr) +{ + /* *INDENT-OFF* */ + static struct { + unsigned attr; + const char *msg; + } table[] = { + { A_NORMAL, "normal" }, + { A_BOLD, "bold" }, + { A_REVERSE, "reverse" }, + { A_UNDERLINE, "underline" }, + { A_BLINK, "blink" }, + }; + /* *INDENT-ON* */ + + const char *result = 0; + + if (state < SIZEOF(table)) { + *attr = table[state].attr; + result = table[state].msg; + } + return result; +} + +/* fill the window with a test-pattern */ +static void +fill_window(WINDOW *win) +{ + int y, x; + + getyx(win, y, x); + wmove(win, 0, 0); + while (waddstr(win, "0123456789 abcdefghijklmnopqrstuvwxyz ") != ERR) { + } + wmove(win, y, x); +} + +static void +show_status(WINDOW *win, STATUS * sp) +{ + int y, x; + + getyx(win, y, x); + wmove(win, 0, 0); + wprintw(win, "Count %d", sp->count); + if (sp->v_msg != 0) + wprintw(win, " Video %s", sp->v_msg); + if (sp->c_msg != 0) + wprintw(win, " Color %s", sp->c_msg); + wprintw(win, " (%d)", sp->status); + wclrtoeol(win); + wmove(win, y, x); +} + +static void +do_subwindow(WINDOW *win, STATUS * sp, void func(WINDOW *)) +{ + WINDOW *win1 = newwin(sp->y_max - 2, sp->x_max - 2, + sp->y_beg + 1, sp->x_beg + 1); + + if (win1 != 0 && sp->y_max > 4 && sp->x_max > 4) { + WINDOW *win2 = derwin(win1, sp->y_max - 4, sp->x_max - 4, 1, 1); + + if (win2 != 0) { + box(win1, 0, 0); + wrefresh(win1); + func(win2); + + delwin(win2); + } else { + beep(); + } + delwin(win1); + touchwin(win); + } else { + beep(); + } +} + +static void +init_status(WINDOW *win, STATUS * sp) +{ + memset(sp, 0, sizeof(*sp)); + sp->c = 99; + sp->v = 99; + sp->ch = ' '; + + keypad(win, TRUE); + fill_window(win); + + getbegyx(win, sp->y_beg, sp->x_beg); + getmaxyx(win, sp->y_max, sp->x_max); +} + +static void +show_help(WINDOW *win) +{ + static const char *table[] = + { + "Basic commands:" + ,"Use h/j/k/l or arrow keys to move the cursor." + ,"Set the count parameter for clip_wprintw by entering digits 0-9." + ,"" + ,"Other commands:" + ,"space toggles through the set of video attributes and colors." + ,"t touches (forces repaint) of the current line." + ,". calls clip_wprintw at the current position with the given count." + ,"= resets count to zero." + ,"? shows this help-window" + ,"" + }; + + int y_max, x_max; + int row; + + getmaxyx(win, y_max, x_max); + for (row = 0; row < (int) SIZEOF(table) && row < y_max; ++row) { + mvwprintw(win, row, 0, "%.*s", x_max, table[row]); + } + while (wgetch(win) != 'q') + beep(); +} + +static void +update_status(WINDOW *win, STATUS * sp) +{ + switch (sp->ch) { + case ' ': /* next test-iteration */ + if (has_colors()) { + if ((sp->c_msg = color_params(++(sp->c), &(sp->pair))) == 0) { + sp->c_msg = color_params(sp->c = 0, &(sp->pair)); + if ((sp->v_msg = video_params(++(sp->v), &(sp->attr))) == 0) { + sp->v_msg = video_params(sp->v = 0, &(sp->attr)); + } + } + } else { + if ((sp->v_msg = video_params(++(sp->v), &(sp->attr))) == 0) { + sp->v_msg = video_params(sp->v = 0, &(sp->attr)); + } + } + sp->count = 0; + show_status(win, sp); + break; + case KEY_LEFT: + case 'h': + if (sp->x_val > 0) + wmove(win, sp->y_val, --(sp->x_val)); + break; + case KEY_DOWN: + case 'j': + if (sp->y_val < sp->y_max) + wmove(win, ++(sp->y_val), sp->x_val); + break; + case KEY_UP: + case 'k': + if (sp->y_val > 0) + wmove(win, --(sp->y_val), sp->x_val); + break; + case KEY_RIGHT: + case 'l': + if (sp->x_val < sp->x_max) + wmove(win, sp->y_val, ++(sp->x_val)); + break; + case 't': + touchline(win, sp->y_val, 1); + break; + case '=': + sp->count = 0; + show_status(win, sp); + break; + case '?': + do_subwindow(win, sp, show_help); + break; + default: + if (isdigit(sp->ch)) { + sp->count = (sp->count * 10) + (sp->ch - '0'); + show_status(win, sp); + } else { + beep(); + } + break; + } +} + +static void +test_clipping(WINDOW *win) +{ + STATUS st; + char fmt[80]; + char *buffer; + unsigned j, need; + + init_status(win, &st); + + do { + switch (st.ch) { + case '.': /* change from current position */ + wattrset(win, st.attr | COLOR_PAIR(st.pair)); + if (st.count > 0) { + need = st.count + 1; + sprintf(fmt, "%%c%%%ds%%c", st.count); + } else { + need = getmaxx(win) - 1; + strcpy(fmt, "%c%s%c"); + } + if ((buffer = typeMalloc(char, need)) != 0) { + for (j = 0; j < need; ++j) { + buffer[j] = 'A' + (j % 26); + } + buffer[need - 1] = '\0'; + st.status = clip_wprintw(win, fmt, '[', buffer, ']'); + } + break; + case 'w': + do_subwindow(win, &st, test_clipping); + break; + case 'q': + return; + default: + update_status(win, &st); + break; + } + } while ((st.ch = wgetch(win)) != ERR); +} + +int +main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED) +{ + initscr(); + cbreak(); + noecho(); + + test_clipping(stdscr); + endwin(); + + ExitProgram(EXIT_SUCCESS); +}