#include #include #include #include #include #include #include #include #include #include #include #include #include #include // Builtin font originally taken from: // https://github.com/viler-int10h/vga-text-mode-fonts/raw/master/FONTS/PC-OTHER/TOSH-SAT.F16 static const uint8_t builtin_font[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x42, 0x81, 0x81, 0xa5, 0xa5, 0x81, 0x81, 0xa5, 0x99, 0x81, 0x42, 0x3c, 0x00, 0x00, 0x00, 0x3c, 0x7e, 0xff, 0xff, 0xdb, 0xdb, 0xff, 0xff, 0xdb, 0xe7, 0xff, 0x7e, 0x3c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6c, 0xfe, 0xfe, 0xfe, 0x7c, 0x7c, 0x38, 0x38, 0x10, 0x10, 0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x38, 0x38, 0x7c, 0x7c, 0xfe, 0x7c, 0x7c, 0x38, 0x38, 0x10, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x3c, 0x3c, 0xdb, 0xff, 0xff, 0xdb, 0x18, 0x18, 0x3c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x3c, 0x7e, 0xff, 0xff, 0xff, 0x66, 0x18, 0x18, 0x3c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 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0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x30, 0x00, 0xfc, 0x00, 0x30, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x76, 0xdc, 0x00, 0x76, 0xdc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0xcc, 0xcc, 0xcc, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0xcc, 0x6c, 0x3c, 0x1c, 0x0c, 0x00, 0x00, 0x00, 0xd8, 0xec, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x38, 0x6c, 0x0c, 0x18, 0x30, 0x60, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0x78, 0x78, 0x78, 0x78, 0x78, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; struct fb_info fbinfo; static struct image *background; static size_t margin = 64; static size_t margin_gradient = 4; static uint32_t default_bg, default_fg; static size_t bg_canvas_size; static uint32_t *bg_canvas; #define A(rgb) (uint8_t)(rgb >> 24) #define R(rgb) (uint8_t)(rgb >> 16) #define G(rgb) (uint8_t)(rgb >> 8) #define B(rgb) (uint8_t)(rgb) #define ARGB(a, r, g, b) (a << 24) | ((r & 0xFF) << 16) | ((g & 0xFF) << 8) | (b & 0xFF) static inline uint32_t colour_blend(uint32_t fg, uint32_t bg) { unsigned alpha = 255 - A(fg); unsigned inv_alpha = A(fg) + 1; uint8_t r = (uint8_t)((alpha * R(fg) + inv_alpha * R(bg)) / 256); uint8_t g = (uint8_t)((alpha * G(fg) + inv_alpha * G(bg)) / 256); uint8_t b = (uint8_t)((alpha * B(fg) + inv_alpha * B(bg)) / 256); return ARGB(0, r, g, b); } static uint32_t blend_gradient_from_box(size_t x, size_t y, uint32_t bg_px, uint32_t hex) { size_t distance, x_distance, y_distance; size_t gradient_stop_x = fbinfo.framebuffer_width - margin; size_t gradient_stop_y = fbinfo.framebuffer_height - margin; if (x < margin) x_distance = margin - x; else x_distance = x - gradient_stop_x; if (y < margin) y_distance = margin - y; else y_distance = y - gradient_stop_y; if (x >= margin && x < gradient_stop_x) { distance = y_distance; } else if (y >= margin && y < gradient_stop_y) { distance = x_distance; } else { distance = sqrt((uint64_t)x_distance * (uint64_t)x_distance + (uint64_t)y_distance * (uint64_t)y_distance); } if (distance > margin_gradient) return bg_px; uint8_t gradient_step = (0xff - A(hex)) / margin_gradient; uint8_t new_alpha = A(hex) + gradient_step * distance; return colour_blend((hex & 0xffffff) | (new_alpha << 24), bg_px); } typedef size_t fixedp6; // the last 6 bits are the fixed point part static size_t fixedp6_to_int(fixedp6 value) { return value / 64; } static fixedp6 int_to_fixedp6(size_t value) { return value * 64; } // Draw rect at coordinates, copying from the image to the fb and canvas, applying fn on every pixel __attribute__((always_inline)) static inline void genloop(size_t xstart, size_t xend, size_t ystart, size_t yend, uint32_t (*blend)(size_t x, size_t y, uint32_t orig)) { uint8_t *img = background->img; const size_t img_width = background->img_width, img_height = background->img_height, img_pitch = background->pitch, colsize = background->bpp / 8; switch (background->type) { case IMAGE_TILED: for (size_t y = ystart; y < yend; y++) { size_t image_y = y % img_height, image_x = xstart % img_width; const size_t off = img_pitch * (img_height - 1 - image_y); size_t canvas_off = fbinfo.framebuffer_width * y; for (size_t x = xstart; x < xend; x++) { uint32_t img_pixel = *(uint32_t*)(img + image_x * colsize + off); uint32_t i = blend(x, y, img_pixel); bg_canvas[canvas_off + x] = i; if (image_x++ == img_width) image_x = 0; // image_x = x % img_width, but modulo is too expensive } } break; case IMAGE_CENTERED: for (size_t y = ystart; y < yend; y++) { size_t image_y = y - background->y_displacement; const size_t off = img_pitch * (img_height - 1 - image_y); size_t canvas_off = fbinfo.framebuffer_width * y; if (image_y >= background->y_size) { /* external part */ for (size_t x = xstart; x < xend; x++) { uint32_t i = blend(x, y, background->back_colour); bg_canvas[canvas_off + x] = i; } } else { /* internal part */ for (size_t x = xstart; x < xend; x++) { size_t image_x = (x - background->x_displacement); bool x_external = image_x >= background->x_size; uint32_t img_pixel = *(uint32_t*)(img + image_x * colsize + off); uint32_t i = blend(x, y, x_external ? background->back_colour : img_pixel); bg_canvas[canvas_off + x] = i; } } } break; // For every pixel, ratio = img_width / gterm_width, img_x = x * ratio, x = (xstart + i) // hence x = xstart * ratio + i * ratio // so you can set x = xstart * ratio, and increment by ratio at each iteration case IMAGE_STRETCHED: for (size_t y = ystart; y < yend; y++) { size_t img_y = (y * img_height) / fbinfo.framebuffer_height; // calculate Y with full precision size_t off = img_pitch * (img_height - 1 - img_y); size_t canvas_off = fbinfo.framebuffer_width * y; size_t ratio = int_to_fixedp6(img_width) / fbinfo.framebuffer_width; fixedp6 img_x = ratio * xstart; for (size_t x = xstart; x < xend; x++) { uint32_t img_pixel = *(uint32_t*)(img + fixedp6_to_int(img_x) * colsize + off); uint32_t i = blend(x, y, img_pixel); bg_canvas[canvas_off + x] = i; img_x += ratio; } } break; } } static uint32_t blend_external(size_t x, size_t y, uint32_t orig) { (void)x; (void)y; return orig; } static uint32_t blend_internal(size_t x, size_t y, uint32_t orig) { (void)x; (void)y; return colour_blend(default_bg, orig); } static uint32_t blend_margin(size_t x, size_t y, uint32_t orig) { return blend_gradient_from_box(x, y, orig, default_bg); } static void loop_external(size_t xstart, size_t xend, size_t ystart, size_t yend) { genloop(xstart, xend, ystart, yend, blend_external); } static void loop_margin(size_t xstart, size_t xend, size_t ystart, size_t yend) { genloop(xstart, xend, ystart, yend, blend_margin); } static void loop_internal(size_t xstart, size_t xend, size_t ystart, size_t yend) { genloop(xstart, xend, ystart, yend, blend_internal); } static void generate_canvas(void) { if (background) { bg_canvas_size = fbinfo.framebuffer_width * fbinfo.framebuffer_height * sizeof(uint32_t); bg_canvas = ext_mem_alloc(bg_canvas_size); int64_t margin_no_gradient = (int64_t)margin - margin_gradient; if (margin_no_gradient < 0) { margin_no_gradient = 0; } size_t scan_stop_x = fbinfo.framebuffer_width - margin_no_gradient; size_t scan_stop_y = fbinfo.framebuffer_height - margin_no_gradient; loop_external(0, fbinfo.framebuffer_width, 0, margin_no_gradient); loop_external(0, fbinfo.framebuffer_width, scan_stop_y, fbinfo.framebuffer_height); loop_external(0, margin_no_gradient, margin_no_gradient, scan_stop_y); loop_external(scan_stop_x, fbinfo.framebuffer_width, margin_no_gradient, scan_stop_y); size_t gradient_stop_x = fbinfo.framebuffer_width - margin; size_t gradient_stop_y = fbinfo.framebuffer_height - margin; if (margin_gradient) { loop_margin(margin_no_gradient, scan_stop_x, margin_no_gradient, margin); loop_margin(margin_no_gradient, scan_stop_x, gradient_stop_y, scan_stop_y); loop_margin(margin_no_gradient, margin, margin, gradient_stop_y); loop_margin(gradient_stop_x, scan_stop_x, margin, gradient_stop_y); } loop_internal(margin, gradient_stop_x, margin, gradient_stop_y); } else { bg_canvas = NULL; } } static bool last_serial = false; static char *last_config = NULL; bool gterm_init(char *config, size_t width, size_t height) { if (quiet) { return false; } if (term != NULL && term_backend == GTERM && fbinfo.default_res == true && width == 0 && height == 0 && fbinfo.framebuffer_bpp == 32 && serial == last_serial && config == last_config) { term->clear(term, true); return true; } if (term != NULL && term_backend == GTERM && fbinfo.framebuffer_width == width && fbinfo.framebuffer_height == height && fbinfo.framebuffer_bpp == 32 && serial == last_serial && config == last_config) { term->clear(term, true); return true; } if (term != NULL) { term->deinit(term, pmm_free); term = NULL; } // We force bpp to 32 if (!fb_init(&fbinfo, width, height, 32)) { return false; } // Ensure this is xRGB8888, we only support that for the menu if (fbinfo.red_mask_size != 8 || fbinfo.red_mask_shift != 16 || fbinfo.green_mask_size != 8 || fbinfo.green_mask_shift != 8 || fbinfo.blue_mask_size != 8 || fbinfo.blue_mask_shift != 0) { return false; } last_serial = serial; last_config = config; // default scheme margin = 64; margin_gradient = 4; uint32_t ansi_colours[8]; ansi_colours[0] = 0x00000000; // black ansi_colours[1] = 0x00aa0000; // red ansi_colours[2] = 0x0000aa00; // green ansi_colours[3] = 0x00aa5500; // brown ansi_colours[4] = 0x000000aa; // blue ansi_colours[5] = 0x00aa00aa; // magenta ansi_colours[6] = 0x0000aaaa; // cyan ansi_colours[7] = 0x00aaaaaa; // grey char *colours = config_get_value(config, 0, "TERM_PALETTE"); if (colours != NULL) { const char *first = colours; size_t i; for (i = 0; i < 8; i++) { const char *last; uint32_t col = strtoui(first, &last, 16); if (first == last) break; ansi_colours[i] = col & 0xffffff; if (*last == 0) break; first = last + 1; } } uint32_t ansi_bright_colours[8]; ansi_bright_colours[0] = 0x00555555; // black ansi_bright_colours[1] = 0x00ff5555; // red ansi_bright_colours[2] = 0x0055ff55; // green ansi_bright_colours[3] = 0x00ffff55; // brown ansi_bright_colours[4] = 0x005555ff; // blue ansi_bright_colours[5] = 0x00ff55ff; // magenta ansi_bright_colours[6] = 0x0055ffff; // cyan ansi_bright_colours[7] = 0x00ffffff; // grey char *bright_colours = config_get_value(config, 0, "TERM_PALETTE_BRIGHT"); if (bright_colours != NULL) { const char *first = bright_colours; size_t i; for (i = 0; i < 8; i++) { const char *last; uint32_t col = strtoui(first, &last, 16); if (first == last) break; ansi_bright_colours[i] = col & 0xffffff; if (*last == 0) break; first = last + 1; } } default_bg = 0x00000000; // background (black) default_fg = 0x00aaaaaa; // foreground (grey) char *theme_background = config_get_value(config, 0, "TERM_BACKGROUND"); if (theme_background != NULL) { default_bg = strtoui(theme_background, NULL, 16); } char *theme_foreground = config_get_value(config, 0, "TERM_FOREGROUND"); if (theme_foreground != NULL) { default_fg = strtoui(theme_foreground, NULL, 16) & 0xffffff; } background = NULL; char *background_path = config_get_value(config, 0, "TERM_WALLPAPER"); if (background_path != NULL) { struct file_handle *bg_file; if ((bg_file = uri_open(background_path)) != NULL) { background = image_open(bg_file); fclose(bg_file); } } if (background == NULL) { margin = 0; margin_gradient = 0; } else { if (theme_background == NULL) { default_bg = 0x80000000; } } char *theme_margin = config_get_value(config, 0, "TERM_MARGIN"); if (theme_margin != NULL) { margin = strtoui(theme_margin, NULL, 10); } char *theme_margin_gradient = config_get_value(config, 0, "TERM_MARGIN_GRADIENT"); if (theme_margin_gradient != NULL) { margin_gradient = strtoui(theme_margin_gradient, NULL, 10); } if (background != NULL) { char *background_layout = config_get_value(config, 0, "TERM_WALLPAPER_STYLE"); if (background_layout != NULL && strcmp(background_layout, "centered") == 0) { char *background_colour = config_get_value(config, 0, "TERM_BACKDROP"); if (background_colour == NULL) background_colour = "0"; uint32_t bg_col = strtoui(background_colour, NULL, 16); image_make_centered(background, fbinfo.framebuffer_width, fbinfo.framebuffer_height, bg_col); } else if (background_layout != NULL && strcmp(background_layout, "tiled") == 0) { } else { image_make_stretched(background, fbinfo.framebuffer_width, fbinfo.framebuffer_height); } } size_t font_width = 8; size_t font_height = 16; size_t font_size = (font_width * font_height * FBTERM_FONT_GLYPHS) / 8; #define FONT_MAX 16384 uint8_t *font = ext_mem_alloc(FONT_MAX); memcpy(font, builtin_font, 4096); size_t tmp_font_width, tmp_font_height; char *menu_font_size = config_get_value(config, 0, "TERM_FONT_SIZE"); if (menu_font_size != NULL) { parse_resolution(&tmp_font_width, &tmp_font_height, NULL, menu_font_size); size_t tmp_font_size = (tmp_font_width * tmp_font_height * FBTERM_FONT_GLYPHS) / 8; if (tmp_font_size > FONT_MAX) { print("Font would be too large (%u bytes, %u bytes allowed). Not loading.\n", tmp_font_size, FONT_MAX); goto no_load_font; } font_size = tmp_font_size; } char *menu_font = config_get_value(config, 0, "TERM_FONT"); if (menu_font != NULL) { struct file_handle *f; if ((f = uri_open(menu_font)) == NULL) { print("menu: Could not open font file.\n"); } else { fread(f, font, 0, font_size); if (menu_font_size != NULL) { font_width = tmp_font_width; font_height = tmp_font_height; } fclose(f); } } no_load_font:; size_t font_spacing = 1; char *font_spacing_str = config_get_value(config, 0, "TERM_FONT_SPACING"); if (font_spacing_str != NULL) { font_spacing = strtoui(font_spacing_str, NULL, 10); } size_t font_scale_x = 1; size_t font_scale_y = 1; char *menu_font_scale = config_get_value(config, 0, "TERM_FONT_SCALE"); if (menu_font_scale != NULL) { parse_resolution(&font_scale_x, &font_scale_y, NULL, menu_font_scale); if (font_scale_x > 8 || font_scale_y > 8) { font_scale_x = 1; font_scale_y = 1; } } generate_canvas(); term = fbterm_init(ext_mem_alloc, (void *)(uintptr_t)fbinfo.framebuffer_addr, fbinfo.framebuffer_width, fbinfo.framebuffer_height, fbinfo.framebuffer_pitch, bg_canvas, ansi_colours, ansi_bright_colours, &default_bg, &default_fg, font, font_width, font_height, font_spacing, font_scale_x, font_scale_y, margin); if (term == NULL) { return false; } pmm_free(font, FONT_MAX); if (bg_canvas != NULL) { pmm_free(bg_canvas, bg_canvas_size); } if (serial) { term->cols = term->cols > 80 ? 80 : term->cols; term->rows = term->rows > 24 ? 24 : term->rows; } term->in_bootloader = true; term_context_reinit(term); term->full_refresh(term); term_backend = GTERM; return true; }