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Diffstat (limited to 'src/s_curses.c')
| -rw-r--r-- | src/s_curses.c | 412 |
1 files changed, 412 insertions, 0 deletions
diff --git a/src/s_curses.c b/src/s_curses.c new file mode 100644 index 0000000..0809b8a --- /dev/null +++ b/src/s_curses.c @@ -0,0 +1,412 @@ +/* s_curses.c -- + + This file is part of the lzop file compressor. + + Copyright (C) 1996-2010 Markus Franz Xaver Johannes Oberhumer + All Rights Reserved. + + lzop and the LZO library are free software; you can redistribute them + and/or modify them under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2 of + the License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; see the file COPYING. + If not, write to the Free Software Foundation, Inc., + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + + Markus F.X.J. Oberhumer + <markus@oberhumer.com> + http://www.oberhumer.com/opensource/lzop/ + */ + + +#include "conf.h" + +#if defined(USE_SCREEN) && defined(USE_SCREEN_CURSES) + +#include "screen.h" + +#define this local_this + +#define mask_fg 0x0f +#define mask_bg 0xf0 + + +/************************************************************************* +// direct screen access +**************************************************************************/ + +#include <termios.h> +#include <ncurses.h> +#undef refresh +#undef clear + + +struct screen_data_t +{ + WINDOW *w; + int mode; + int page; + int cols; + int rows; + int cursor_x; + int cursor_y; + unsigned char attr; + unsigned char init_attr; + chtype empty_cell; +}; + + + +static void s_refresh(screen_t *this) +{ + wrefresh(this->data->w); +} + + +static __inline__ +chtype make_cell(screen_t *this, int ch, int attr) +{ + int fg = attr & mask_fg; + chtype c = ch & 0xff; + if (fg < 8) + c |= COLOR_PAIR((fg + 0)); + else + c |= COLOR_PAIR(((fg & 7) + 0)) | A_BOLD; + return c; +} + + +static int getMode(const screen_t *this) +{ + return this->data->mode; +} + + +static int getPage(const screen_t *this) +{ + return this->data->page; +} + + +static int getRows(const screen_t *this) +{ + return this->data->rows; +} + + +static int getCols(const screen_t *this) +{ + return this->data->cols; +} + + +static int getFg(const screen_t *this) +{ + return this->data->attr & mask_fg; +} + + +static int getBg(const screen_t *this) +{ + return this->data->attr & mask_bg; +} + + +static void setFg(screen_t *this, int fg) +{ + this->data->attr = (this->data->attr & mask_bg) | (fg & mask_fg); +} + + +static void setBg(screen_t *this, int bg) +{ + this->data->attr = (this->data->attr & mask_fg) | (bg & mask_bg); +} + + +/* private */ +static __inline__ int gotoxy(screen_t *this, int x, int y) +{ + if (wmove(this->data->w, this->data->w->_begy+y, + this->data->w->_begx+x) != ERR) + return 0; + return -1; +} + + +static void setCursor(screen_t *this, int x, int y) +{ + if (gotoxy(this,x,y) == 0) + { + this->data->cursor_x = x; + this->data->cursor_y = y; + } +} + + +static void getCursor(const screen_t *this, int *x, int *y) +{ + if (x) + *x = this->data->cursor_x; + if (y) + *y = this->data->cursor_y; +} + + +static void putCharAttr(screen_t *this, int ch, int attr, int x, int y) +{ + if (gotoxy(this,x,y) == 0) + waddch(this->data->w,make_cell(this,ch,attr)); +} + + +static void putChar(screen_t *this, int ch, int x, int y) +{ + putCharAttr(this,ch,this->data->attr,x,y); +} + + +static void putStringAttr(screen_t *this, const char *s, int attr, int x, int y) +{ + while (*s) + putCharAttr(this,*s++,attr,x++,y); +} + + +static void putString(screen_t *this, const char *s, int x, int y) +{ + putStringAttr(this,s,this->data->attr,x,y); +} + + +static int init(screen_t *this, int fd) +{ + int fg, bg; + + if (!this || !this->data) + return -1; + + this->data->mode = -1; + this->data->page = 0; + + if (fd < 0 || !acc_isatty(fd)) + return -1; + + this->data->w = initscr(); + if (!this->data->w) + return -1; + (void) noecho(); + + this->data->cols = this->data->w->_maxx - this->data->w->_begx + 1; + this->data->rows = this->data->w->_maxy - this->data->w->_begy + 1; + this->data->cursor_x = this->data->w->_curx; + this->data->cursor_y = this->data->w->_cury; + + this->data->empty_cell = ' '; + + if (has_colors()) + start_color(); + fg = (this->data->w->_attrs); + bg = (this->data->w->_bkgd); + fg = PAIR_NUMBER(this->data->w->_attrs); + bg = PAIR_NUMBER(this->data->w->_bkgd); + if (has_colors() && COLORS >= 8 && COLOR_PAIRS >= 8) + this->data->mode = 3; + else + this->data->mode = 7; + + if (this->data->mode == 3) + { + int i = 0; + init_pair(i++, COLOR_BLACK, bg); + init_pair(i++, COLOR_BLUE, bg); + init_pair(i++, COLOR_GREEN, bg); + init_pair(i++, COLOR_CYAN, bg); + init_pair(i++, COLOR_RED, bg); + init_pair(i++, COLOR_MAGENTA, bg); + init_pair(i++, COLOR_YELLOW, bg); + init_pair(i++, COLOR_WHITE, bg); + } + + this->data->attr = (bg << 4) | fg; + this->data->attr = 0x07; + + return 0; +} + + +static void finalize(screen_t *this) +{ +#if 0 + if (this->data->w) + (void) endwin(); +#endif + UNUSED(this); +} + + +static void updateLineN(screen_t *this, const void *line, int y, int len) +{ + if (len > 0 && len <= 2*this->data->cols) + { + int x; + const unsigned char *l = line; + + for (x = 0; x < len / 2; x++, l += 2) + { +#if 1 + if ((l[1] & mask_bg) != BG_BLACK) + putCharAttr(this,'#',l[1] >> 4,x,y); + else + putCharAttr(this,l[0],l[1],x,y); +#else + putCharAttr(this,l[0],l[1],x,y); +#endif + } + } +} + + +static void clearLine(screen_t *this, int y) +{ + int x; + + for (x = 0; x < this->data->cols; x++) + if (gotoxy(this,x,y) == 0) + waddch(this->data->w,this->data->empty_cell); +} + + +static void s_clear(screen_t *this) +{ + int y; + + for (y = 0; y < this->data->rows; y++) + clearLine(this,y); +} + + +static int scrollUp(screen_t *this, int lines) +{ + if (lines <= 0) + return 0; + if (lines >= this->data->rows) + s_clear(this); + else + wscrl(this->data->w,lines); + return lines; +} + + +static int getCursorShape(const screen_t *this) +{ + UNUSED(this); + return 0; +} + + +static void setCursorShape(screen_t *this, int shape) +{ + UNUSED(this); + UNUSED(shape); +} + + +static int kbhit(screen_t *this) +{ + const int fd = STDIN_FILENO; + const unsigned long usec = 0; + struct timeval tv; + fd_set fds; + + UNUSED(this); + FD_ZERO(&fds); + FD_SET(fd, &fds); + tv.tv_sec = usec / 1000000; + tv.tv_usec = usec % 1000000; + return (select(fd + 1, &fds, NULL, NULL, &tv) > 0); +} + + +static int intro(screen_t *this, void (*show_frames)(screen_t *) ) +{ + int shape; + struct termios term_old, term_new; + int term_r; + + term_r = tcgetattr(STDIN_FILENO, &term_old); + if (term_r == 0) + { + term_new = term_old; + term_new.c_lflag &= ~(ISIG | ICANON | ECHO); + tcsetattr(STDIN_FILENO, TCSANOW, &term_new); + } + + shape = getCursorShape(this); + setCursorShape(this,0x2000); + show_frames(this); + if (this->data->rows > 24) + setCursor(this,this->data->cursor_x,this->data->cursor_y+1); + setCursorShape(this,shape); + s_refresh(this); + + if (term_r == 0) + tcsetattr(STDIN_FILENO, TCSANOW, &term_old); + + return 1; +} + + +static const screen_t driver = +{ + sobject_destroy, + finalize, + init, + s_refresh, + getMode, + getPage, + getRows, + getCols, + getFg, + getBg, + getCursor, + getCursorShape, + setFg, + setBg, + setCursor, + setCursorShape, + putChar, + putCharAttr, + putString, + putStringAttr, + s_clear, + clearLine, + updateLineN, + scrollUp, + kbhit, + intro, + (struct screen_data_t *) 0 +}; + + +/* public constructor */ +screen_t *screen_curses_construct(void) +{ + return sobject_construct(&driver,sizeof(*driver.data)); +} + + +#endif /* defined(USE_SCREEN) && defined(USE_SCREEN_CURSES) */ + + +/* +vi:ts=4:et +*/ + |