diff options
Diffstat (limited to 'grub-core/term/gfxterm_background.c')
| -rw-r--r-- | grub-core/term/gfxterm_background.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/grub-core/term/gfxterm_background.c b/grub-core/term/gfxterm_background.c new file mode 100644 index 0000000..8da71a8 --- /dev/null +++ b/grub-core/term/gfxterm_background.c @@ -0,0 +1,190 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2006,2007,2008,2009,2013 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <grub/term.h> +#include <grub/types.h> +#include <grub/dl.h> +#include <grub/misc.h> +#include <grub/font.h> +#include <grub/mm.h> +#include <grub/env.h> +#include <grub/video.h> +#include <grub/gfxterm.h> +#include <grub/bitmap.h> +#include <grub/command.h> +#include <grub/extcmd.h> +#include <grub/bitmap_scale.h> +#include <grub/i18n.h> +#include <grub/color.h> + +GRUB_MOD_LICENSE ("GPLv3+"); + +/* Option array indices. */ +enum + { + BACKGROUND_CMD_ARGINDEX_MODE = 0 + }; + +static const struct grub_arg_option background_image_cmd_options[] = + { + {"mode", 'm', 0, N_("Background image mode."), + /* TRANSLATORS: This refers to background image mode (stretched or + in left-top corner). Note that GRUB will accept only original + keywords stretch and normal, not the translated ones. + So please put both in translation + e.g. stretch(=%STRETCH%)|normal(=%NORMAL%). + The percents mark the translated version. Since many people + may not know the word stretch or normal I recommend + putting the translation either here or in "Background image mode." + string. */ + N_("stretch|normal"), + ARG_TYPE_STRING}, + {0, 0, 0, 0, 0, 0} + }; + +static grub_err_t +grub_gfxterm_background_image_cmd (grub_extcmd_context_t ctxt, + int argc, char **args) +{ + struct grub_arg_list *state = ctxt->state; + + /* Check that we have video adapter active. */ + if (grub_video_get_info(NULL) != GRUB_ERR_NONE) + return grub_errno; + + /* Destroy existing background bitmap if loaded. */ + if (grub_gfxterm_background.bitmap) + { + grub_video_bitmap_destroy (grub_gfxterm_background.bitmap); + grub_gfxterm_background.bitmap = 0; + grub_gfxterm_background.blend_text_bg = 0; + + /* Mark whole screen as dirty. */ + grub_gfxterm_schedule_repaint (); + } + + /* If filename was provided, try to load that. */ + if (argc >= 1) + { + /* Try to load new one. */ + grub_video_bitmap_load (&grub_gfxterm_background.bitmap, args[0]); + if (grub_errno != GRUB_ERR_NONE) + return grub_errno; + + /* Determine if the bitmap should be scaled to fit the screen. */ + if (!state[BACKGROUND_CMD_ARGINDEX_MODE].set + || grub_strcmp (state[BACKGROUND_CMD_ARGINDEX_MODE].arg, + "stretch") == 0) + { + unsigned int width, height; + grub_gfxterm_get_dimensions (&width, &height); + if (width + != grub_video_bitmap_get_width (grub_gfxterm_background.bitmap) + || height + != grub_video_bitmap_get_height (grub_gfxterm_background.bitmap)) + { + struct grub_video_bitmap *scaled_bitmap; + grub_video_bitmap_create_scaled (&scaled_bitmap, + width, + height, + grub_gfxterm_background.bitmap, + GRUB_VIDEO_BITMAP_SCALE_METHOD_BEST); + if (grub_errno == GRUB_ERR_NONE) + { + /* Replace the original bitmap with the scaled one. */ + grub_video_bitmap_destroy (grub_gfxterm_background.bitmap); + grub_gfxterm_background.bitmap = scaled_bitmap; + } + } + } + + /* If bitmap was loaded correctly, display it. */ + if (grub_gfxterm_background.bitmap) + { + grub_gfxterm_background.blend_text_bg = 1; + + /* Mark whole screen as dirty. */ + grub_gfxterm_schedule_repaint (); + } + } + + /* All was ok. */ + grub_errno = GRUB_ERR_NONE; + return grub_errno; +} + +static grub_err_t +grub_gfxterm_background_color_cmd (grub_command_t cmd __attribute__ ((unused)), + int argc, char **args) +{ + if (argc != 1) + return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("one argument expected")); + + /* Check that we have video adapter active. */ + if (grub_video_get_info (NULL) != GRUB_ERR_NONE) + return grub_errno; + + if (grub_video_parse_color (args[0], + &grub_gfxterm_background.default_bg_color) + != GRUB_ERR_NONE) + return grub_errno; + + /* Destroy existing background bitmap if loaded. */ + if (grub_gfxterm_background.bitmap) + { + grub_video_bitmap_destroy (grub_gfxterm_background.bitmap); + grub_gfxterm_background.bitmap = 0; + + /* Mark whole screen as dirty. */ + grub_gfxterm_schedule_repaint (); + } + + /* Set the background and border colors. The background color needs to be + compatible with the text layer. */ + grub_gfxterm_video_update_color (); + grub_gfxterm_background.blend_text_bg = 1; + + /* Mark whole screen as dirty. */ + grub_gfxterm_schedule_repaint (); + + return GRUB_ERR_NONE; +} + +static grub_extcmd_t background_image_cmd_handle; +static grub_command_t background_color_cmd_handle; + +GRUB_MOD_INIT(gfxterm_background) +{ + background_image_cmd_handle = + grub_register_extcmd ("background_image", + grub_gfxterm_background_image_cmd, 0, + N_("[-m (stretch|normal)] FILE"), + N_("Load background image for active terminal."), + background_image_cmd_options); + background_color_cmd_handle = + grub_register_command ("background_color", + grub_gfxterm_background_color_cmd, + N_("COLOR"), + N_("Set background color for active terminal.")); +} + +GRUB_MOD_FINI(gfxterm_background) +{ + grub_unregister_command (background_color_cmd_handle); + grub_unregister_extcmd (background_image_cmd_handle); +} |