diff options
Diffstat (limited to 'output/terminal_ncurses.c')
| -rw-r--r-- | output/terminal_ncurses.c | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/output/terminal_ncurses.c b/output/terminal_ncurses.c new file mode 100644 index 0000000..061a507 --- /dev/null +++ b/output/terminal_ncurses.c @@ -0,0 +1,280 @@ +#include "output/terminal_ncurses.h" + +#include <curses.h> +#include <stdlib.h> +#include <string.h> +#include <wchar.h> + +#include "util.h" + +int gradient_size = 64; + +struct colors { + NCURSES_COLOR_T color; + NCURSES_COLOR_T R; + NCURSES_COLOR_T G; + NCURSES_COLOR_T B; +}; + +#define COLOR_REDEFINITION -2 + +#define MAX_COLOR_REDEFINITION 256 + +// static struct colors the_color_redefinitions[MAX_COLOR_REDEFINITION]; + +static void parse_color(char *color_string, struct colors *color) { + if (color_string[0] == '#') { + if (!can_change_color()) { + cleanup_terminal_ncurses(); + fprintf(stderr, "Your terminal can not change color definitions, " + "please use one of the predefined colors.\n"); + exit(EXIT_FAILURE); + } + color->color = COLOR_REDEFINITION; + sscanf(++color_string, "%02hx%02hx%02hx", &color->R, &color->G, &color->B); + } +} +/* +static void remember_color_definition(NCURSES_COLOR_T color_number) { + int index = color_number - 1; // array starts from zero and colors - not + if(the_color_redefinitions[index].color == 0) { + the_color_redefinitions[index].color = color_number; + color_content(color_number, + &the_color_redefinitions[index].R, + &the_color_redefinitions[index].G, + &the_color_redefinitions[index].B); + } +} +*/ +// ncurses use color range [0, 1000], and we - [0, 255] +#define CURSES_COLOR_COEFFICIENT(X) ((X)*1000.0 / 0xFF + 0.5) +#define COLORS_STRUCT_NORMALIZE(X) \ + CURSES_COLOR_COEFFICIENT(X.R), CURSES_COLOR_COEFFICIENT(X.G), CURSES_COLOR_COEFFICIENT(X.B) + +static NCURSES_COLOR_T change_color_definition(NCURSES_COLOR_T color_number, + char *const color_string, + NCURSES_COLOR_T predef_color) { + struct colors color = {0}; + parse_color(color_string, &color); + NCURSES_COLOR_T return_color_number = predef_color; + if (color.color == COLOR_REDEFINITION) { + // remember_color_definition(color_number); + init_color(color_number, COLORS_STRUCT_NORMALIZE(color)); + return_color_number = color_number; + } + return return_color_number; +} + +void init_terminal_ncurses(char *const fg_color_string, char *const bg_color_string, + int predef_fg_color, int predef_bg_color, int gradient, + int gradient_count, char **gradient_colors, int *width, int *lines) { + initscr(); + curs_set(0); + timeout(0); + noecho(); + start_color(); + use_default_colors(); + + getmaxyx(stdscr, *lines, *width); + clear(); + + NCURSES_COLOR_T color_pair_number = 16; + + NCURSES_COLOR_T bg_color_number; + bg_color_number = change_color_definition(0, bg_color_string, predef_bg_color); + + if (!gradient) { + + NCURSES_COLOR_T fg_color_number; + fg_color_number = change_color_definition(1, fg_color_string, predef_fg_color); + + init_pair(color_pair_number, fg_color_number, bg_color_number); + + } else if (gradient) { + + // 0 -> col1, 1-> col1<=>col2, 2 -> col2 and so on + short unsigned int rgb[2 * gradient_count - 1][3]; + char next_color[14]; + + gradient_size = *lines; + + if (gradient_size > COLORS) + gradient_size = COLORS - 1; + + if (gradient_size > COLOR_PAIRS) + gradient_size = COLOR_PAIRS - 1; + + if (gradient_size > MAX_COLOR_REDEFINITION) + gradient_size = MAX_COLOR_REDEFINITION - 1; + + for (int i = 0; i < gradient_count; i++) { + int col = (i + 1) * 2 - 2; + sscanf(gradient_colors[i] + 1, "%02hx%02hx%02hx", &rgb[col][0], &rgb[col][1], + &rgb[col][2]); + } + + // sscanf(gradient_color_1 + 1, "%02hx%02hx%02hx", &rgb[0][0], &rgb[0][1], &rgb[0][2]); + // sscanf(gradient_color_2 + 1, "%02hx%02hx%02hx", &rgb[1][0], &rgb[1][1], &rgb[1][2]); + + int individual_size = gradient_size / (gradient_count - 1); + + for (int i = 0; i < gradient_count - 1; i++) { + + int col = (i + 1) * 2 - 2; + if (i == gradient_count - 1) + col = 2 * (gradient_count - 1) - 2; + + for (int j = 0; j < individual_size; j++) { + + for (int k = 0; k < 3; k++) { + rgb[col + 1][k] = rgb[col][k] + (rgb[col + 2][k] - rgb[col][k]) * + (j / (individual_size * 0.85)); + if (rgb[col + 1][k] > 255) + rgb[col][k] = 0; + if (j > individual_size * 0.85) + rgb[col + 1][k] = rgb[col + 2][k]; + } + + sprintf(next_color, "#%02x%02x%02x", rgb[col + 1][0], rgb[col + 1][1], + rgb[col + 1][2]); + + change_color_definition(color_pair_number, next_color, color_pair_number); + init_pair(color_pair_number, color_pair_number, bg_color_number); + color_pair_number++; + } + } + + int left = individual_size * (gradient_count - 1); + int col = 2 * (gradient_count)-2; + while (left < gradient_size) { + sprintf(next_color, "#%02x%02x%02x", rgb[col][0], rgb[col][1], rgb[col][2]); + change_color_definition(color_pair_number, next_color, color_pair_number); + init_pair(color_pair_number, color_pair_number, bg_color_number); + color_pair_number++; + left++; + } + color_pair_number--; + } + + attron(COLOR_PAIR(color_pair_number)); + + if (bg_color_number != -1) + bkgd(COLOR_PAIR(color_pair_number)); + + for (int y = 0; y < *lines; y++) { + for (int x = 0; x < *width; x++) { + mvaddch(y, x, ' '); + } + } + refresh(); +} + +void change_colors(int cur_height, int tot_height) { + tot_height /= gradient_size; + if (tot_height < 1) + tot_height = 1; + cur_height /= tot_height; + if (cur_height > gradient_size - 1) + cur_height = gradient_size - 1; + attron(COLOR_PAIR(cur_height + 16)); +} + +void get_terminal_dim_ncurses(int *width, int *height) { + getmaxyx(stdscr, *height, *width); + gradient_size = *height; + clear(); // clearing in case of resieze +} + +#define TERMINAL_RESIZED -1 + +int draw_terminal_ncurses(int is_tty, int terminal_height, int terminal_width, int bars_count, + int bar_width, int bar_spacing, int rest, const int f[200], + int flastd[200], int gradient) { + const int height = terminal_height - 1; + const wchar_t *bar_heights[] = {L"\u2581", L"\u2582", L"\u2583", L"\u2584", + L"\u2585", L"\u2586", L"\u2587", L"\u2588"}; + int num_bar_heights = (sizeof(bar_heights) / sizeof(bar_heights[0])); + + // output: check if terminal has been resized + if (!is_tty) { + if (LINES != terminal_height || COLS != terminal_width) { + return TERMINAL_RESIZED; + } + } + + // Compute how much of the screen we possibly need to update ahead-of-time. + int max_update_y = 0; + for (int bar = 0; bar < bars_count; bar++) { + max_update_y = max(max_update_y, max(f[bar], flastd[bar])); + } + + max_update_y = (max_update_y + num_bar_heights) / num_bar_heights; + + for (int y = 0; y < max_update_y; y++) { + if (gradient) { + change_colors(y, height); + } + + for (int bar = 0; bar < bars_count; bar++) { + if (f[bar] == flastd[bar]) { + continue; + } + + int cur_col = bar * bar_width + bar * bar_spacing + rest; + int f_cell = (f[bar] - 1) / num_bar_heights; + int f_last_cell = (flastd[bar] - 1) / num_bar_heights; + + if (f_cell >= y) { + int bar_step; + + if (f_cell == y) { + // The "cap" of the bar occurs at this [y]. + bar_step = (f[bar] - 1) % num_bar_heights; + } else if (f_last_cell <= y) { + // The bar is full at this [y]. + bar_step = num_bar_heights - 1; + } else { + // No update necessary since last frame. + continue; + } + + for (int col = cur_col, i = 0; i < bar_width; i++, col++) { + if (is_tty) { + mvaddch(height - y, col, '1' + bar_step); + } else { + mvaddwstr(height - y, col, bar_heights[bar_step]); + } + } + } else if (f_last_cell >= y) { + // This bar was taller during the last frame than during this frame, so + // clear the excess characters. + for (int col = cur_col, i = 0; i < bar_width; i++, col++) { + mvaddch(height - y, col, ' '); + } + } + } + } + + refresh(); + return 0; +} + +// general: cleanup +void cleanup_terminal_ncurses(void) { + echo(); + system("setfont >/dev/null 2>&1"); + system("setfont /usr/share/consolefonts/Lat2-Fixed16.psf.gz >/dev/null 2>&1"); + system("setterm -blank 10 >/dev/null 2>&1"); + /*for(int i = 0; i < gradient_size; ++i) { + if(the_color_redefinitions[i].color) { + init_color(the_color_redefinitions[i].color, + the_color_redefinitions[i].R, + the_color_redefinitions[i].G, + the_color_redefinitions[i].B); + } + } +*/ + standend(); + endwin(); + system("clear"); +} |