NCURSES-Programming 文档示例程序

#include <panel.h> typedef struct _PANEL_DATA { int x, y, w, h; char label[80]; int label_color; PANEL *next; }PANEL_DATA; #define NLINES 10 #define NCOLS 40 void init_wins(WINDOW **wins, int n); void win_show(WINDOW *win, char *label, int label_color); void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color); void set_user_ptrs(PANEL **panels, int n); int main() { WINDOW *my_wins[3]; PANEL *my_panels[3]; PANEL_DATA *top; PANEL *stack_top; WINDOW *temp_win, *old_win; int ch; int newx, newy, neww, newh; int size = FALSE, move = FALSE; /* Initialize curses */ initscr(); start_color(); cbreak(); noecho(); keypad(stdscr, TRUE); /* Initialize all the colors */ init_pair(1, COLOR_RED, COLOR_BLACK); init_pair(2, COLOR_GREEN, COLOR_BLACK); init_pair(3, COLOR_BLUE, COLOR_BLACK); init_pair(4, COLOR_CYAN, COLOR_BLACK); init_wins(my_wins, 3); /* Attach a panel to each window */ /* Order is bottom up */ my_panels[0] = new_panel(my_wins[0]); /* Push 0, order: stdscr-0 */ my_panels[1] = new_panel(my_wins[1]); /* Push 1, order: stdscr-0-1 */ my_panels[2] = new_panel(my_wins[2]); /* Push 2, order: stdscr-0-1-2 */ set_user_ptrs(my_panels, 3); /* Update the stacking order. 2nd panel will be on top */ update_panels(); /* Show it on the screen */ attron(COLOR_PAIR(4)); mvprintw(LINES - 3, 0, "Use 'm' for moving, 'r' for resizing"); mvprintw(LINES - 2, 0, "Use tab to browse through the windows (F1 to Exit)"); attroff(COLOR_PAIR(4)); doupdate(); stack_top = my_panels[2]; top = (PANEL_DATA *)panel_userptr(stack_top); newx = top->x; newy = top->y; neww = top->w; newh = top->h; while((ch = getch()) != KEY_F(1)) { switch(ch) { case 9: /* Tab */ top = (PANEL_DATA *)panel_userptr(stack_top); top_panel(top->next); stack_top = top->next; top = (PANEL_DATA *)panel_userptr(stack_top); newx = top->x; newy = top->y; neww = top->w; newh = top->h; break; case 'r': /* Re-Size*/ size = TRUE; attron(COLOR_PAIR(4)); mvprintw(LINES - 4, 0, "Entered Resizing :Use Arrow Keys to resize and press <ENTER> to end resizing"); refresh(); attroff(COLOR_PAIR(4)); break; case 'm': /* Move */ attron(COLOR_PAIR(4)); mvprintw(LINES - 4, 0, "Entered Moving: Use Arrow Keys to Move and press <ENTER> to end moving"); refresh(); attroff(COLOR_PAIR(4)); move = TRUE; break; case KEY_LEFT: if(size == TRUE) { --newx; ++neww; } if(move == TRUE) --newx; break; case KEY_RIGHT: if(size == TRUE) { ++newx; --neww; } if(move == TRUE) ++newx; break; case KEY_UP: if(size == TRUE) { --newy; ++newh; } if(move == TRUE) --newy; break; case KEY_DOWN: if(size == TRUE) { ++newy; --newh; } if(move == TRUE) ++newy; break; case 10: /* Enter */ move(LINES - 4, 0); clrtoeol(); refresh(); if(size == TRUE) { old_win = panel_window(stack_top); temp_win = newwin(newh, neww, newy, newx); replace_panel(stack_top, temp_win); win_show(temp_win, top->label, top->label_color); delwin(old_win); size = FALSE; } if(move == TRUE) { move_panel(stack_top, newy, newx); move = FALSE; } break; } attron(COLOR_PAIR(4)); mvprintw(LINES - 3, 0, "Use 'm' for moving, 'r' for resizing"); mvprintw(LINES - 2, 0, "Use tab to browse through the windows (F1 to Exit)"); attroff(COLOR_PAIR(4)); refresh(); update_panels(); doupdate(); } endwin(); return 0; } /* Put all the windows */ void init_wins(WINDOW **wins, int n) { int x, y, i; char label[80]; y = 2; x = 10; for(i = 0; i < n; ++i) { wins[i] = newwin(NLINES, NCOLS, y, x); sprintf(label, "Window Number %d", i + 1); win_show(wins[i], label, i + 1); y += 3; x += 7; } } /* Set the PANEL_DATA structures for individual panels */ void set_user_ptrs(PANEL **panels, int n) { PANEL_DATA *ptrs; WINDOW *win; int x, y, w, h, i; char temp[80]; ptrs = (PANEL_DATA *)calloc(n, sizeof(PANEL_DATA)); for(i = 0;i < n; ++i) { win = panel_window(panels[i]); getbegyx(win, y, x); getmaxyx(win, h, w); ptrs[i].x = x; ptrs[i].y = y; ptrs[i].w = w; ptrs[i].h = h; sprintf(temp, "Window Number %d", i + 1); strcpy(ptrs[i].label, temp); ptrs[i].label_color = i + 1; if(i + 1 == n) ptrs[i].next = panels[0]; else ptrs[i].next = panels[i + 1]; set_panel_userptr(panels[i], &ptrs[i]); } } /* Show the window with a border and a label */ void win_show(WINDOW *win, char *label, int label_color) { int startx, starty, height, width; getbegyx(win, starty, startx); getmaxyx(win, height, width); box(win, 0, 0); mvwaddch(win, 2, 0, ACS_LTEE); mvwhline(win, 2, 1, ACS_HLINE, width - 2); mvwaddch(win, 2, width - 1, ACS_RTEE); print_in_middle(win, 1, 0, width, label, COLOR_PAIR(label_color)); } void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color) { int length, x, y; float temp; if(win == NULL) win = stdscr; getyx(win, y, x); if(startx != 0) x = startx; if(starty != 0) y = starty; if(width == 0) width = 80; length = strlen(string); temp = (width - length)/ 2; x = startx + (int)temp; wattron(win, color); mvwprintw(win, y, x, "%s", string); wattroff(win, color); refresh(); }