159b4a8bb7
controlled independently from whether there is a background bitmap. (grub_gfxterm_fullscreen): Change blend_text_bg when changing bitmap. (destroy_window): Likewise. (grub_gfxterm_background_image_cmd): Likewise.
1282 lines
35 KiB
C
1282 lines
35 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2006,2007,2008,2009 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/term.h>
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#include <grub/types.h>
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#include <grub/dl.h>
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#include <grub/misc.h>
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#include <grub/font.h>
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#include <grub/mm.h>
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#include <grub/env.h>
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#include <grub/video.h>
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#include <grub/gfxterm.h>
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#include <grub/bitmap.h>
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#include <grub/command.h>
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#include <grub/extcmd.h>
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#include <grub/bitmap_scale.h>
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#include <grub/i18n.h>
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#define DEFAULT_VIDEO_MODE "auto"
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#define DEFAULT_BORDER_WIDTH 10
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#define DEFAULT_STANDARD_COLOR 0x07
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struct grub_dirty_region
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{
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int top_left_x;
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int top_left_y;
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int bottom_right_x;
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int bottom_right_y;
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};
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struct grub_colored_char
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{
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/* An Unicode codepoint. */
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struct grub_unicode_glyph *code;
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/* Color values. */
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grub_video_color_t fg_color;
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grub_video_color_t bg_color;
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/* The width of this character minus one. */
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unsigned char width;
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/* The column index of this character. */
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unsigned char index;
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};
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struct grub_virtual_screen
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{
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/* Dimensions of the virtual screen in pixels. */
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unsigned int width;
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unsigned int height;
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/* Offset in the display in pixels. */
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unsigned int offset_x;
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unsigned int offset_y;
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/* TTY Character sizes in pixes. */
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unsigned int normal_char_width;
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unsigned int normal_char_height;
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/* Virtual screen TTY size in characters. */
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unsigned int columns;
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unsigned int rows;
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/* Current cursor location in characters. */
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unsigned int cursor_x;
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unsigned int cursor_y;
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/* Current cursor state. */
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int cursor_state;
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/* Font settings. */
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grub_font_t font;
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/* Terminal color settings. */
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grub_uint8_t standard_color_setting;
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grub_uint8_t term_color;
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/* Color settings. */
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grub_video_color_t fg_color;
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grub_video_color_t bg_color;
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grub_video_color_t bg_color_display;
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/* Text buffer for virtual screen. Contains (columns * rows) number
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of entries. */
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struct grub_colored_char *text_buffer;
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int total_scroll;
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};
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struct grub_gfxterm_window
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{
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unsigned x;
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unsigned y;
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unsigned width;
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unsigned height;
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int double_repaint;
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};
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static struct grub_video_render_target *render_target;
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void (*grub_gfxterm_decorator_hook) (void) = NULL;
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static struct grub_gfxterm_window window;
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static struct grub_virtual_screen virtual_screen;
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static grub_gfxterm_repaint_callback_t repaint_callback;
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static int repaint_scheduled = 0;
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static int repaint_was_scheduled = 0;
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static void destroy_window (void);
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static struct grub_video_render_target *text_layer;
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static unsigned int bitmap_width;
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static unsigned int bitmap_height;
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static struct grub_video_bitmap *bitmap;
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static int blend_text_bg;
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static struct grub_dirty_region dirty_region;
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static void dirty_region_reset (void);
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static int dirty_region_is_empty (void);
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static void dirty_region_add (int x, int y,
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unsigned int width, unsigned int height);
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static unsigned int calculate_normal_character_width (grub_font_t font);
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static unsigned char calculate_character_width (struct grub_font_glyph *glyph);
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static void grub_gfxterm_refresh (struct grub_term_output *term __attribute__ ((unused)));
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static grub_ssize_t
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grub_gfxterm_getcharwidth (struct grub_term_output *term __attribute__ ((unused)),
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const struct grub_unicode_glyph *c);
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static void
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set_term_color (grub_uint8_t term_color)
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{
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struct grub_video_render_target *old_target;
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/* Save previous target and switch to text layer. */
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grub_video_get_active_render_target (&old_target);
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grub_video_set_active_render_target (text_layer);
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/* Map terminal color to text layer compatible video colors. */
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virtual_screen.fg_color = grub_video_map_color(term_color & 0x0f);
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/* Special case: use black as transparent color. */
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if (((term_color >> 4) & 0x0f) == 0)
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{
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virtual_screen.bg_color = grub_video_map_rgba(0, 0, 0, 0);
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}
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else
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{
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virtual_screen.bg_color = grub_video_map_color((term_color >> 4) & 0x0f);
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}
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/* Restore previous target. */
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grub_video_set_active_render_target (old_target);
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}
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static void
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clear_char (struct grub_colored_char *c)
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{
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grub_free (c->code);
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c->code = grub_unicode_glyph_from_code (' ');
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if (!c->code)
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grub_errno = GRUB_ERR_NONE;
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c->fg_color = virtual_screen.fg_color;
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c->bg_color = virtual_screen.bg_color;
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c->width = 0;
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c->index = 0;
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}
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static void
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grub_virtual_screen_free (void)
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{
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/* If virtual screen has been allocated, free it. */
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if (virtual_screen.text_buffer != 0)
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grub_free (virtual_screen.text_buffer);
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/* Reset virtual screen data. */
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grub_memset (&virtual_screen, 0, sizeof (virtual_screen));
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/* Free render targets. */
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grub_video_delete_render_target (text_layer);
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text_layer = 0;
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}
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static grub_err_t
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grub_virtual_screen_setup (unsigned int x, unsigned int y,
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unsigned int width, unsigned int height,
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const char *font_name)
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{
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unsigned int i;
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/* Free old virtual screen. */
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grub_virtual_screen_free ();
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/* Initialize with default data. */
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virtual_screen.font = grub_font_get (font_name);
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if (!virtual_screen.font)
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return grub_error (GRUB_ERR_BAD_FONT,
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"no font loaded");
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virtual_screen.width = width;
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virtual_screen.height = height;
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virtual_screen.offset_x = x;
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virtual_screen.offset_y = y;
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virtual_screen.normal_char_width =
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calculate_normal_character_width (virtual_screen.font);
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virtual_screen.normal_char_height =
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grub_font_get_max_char_height (virtual_screen.font);
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virtual_screen.cursor_x = 0;
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virtual_screen.cursor_y = 0;
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virtual_screen.cursor_state = 1;
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virtual_screen.total_scroll = 0;
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/* Calculate size of text buffer. */
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virtual_screen.columns = virtual_screen.width / virtual_screen.normal_char_width;
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virtual_screen.rows = virtual_screen.height / virtual_screen.normal_char_height;
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/* Allocate memory for text buffer. */
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virtual_screen.text_buffer =
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(struct grub_colored_char *) grub_malloc (virtual_screen.columns
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* virtual_screen.rows
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* sizeof (*virtual_screen.text_buffer));
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if (grub_errno != GRUB_ERR_NONE)
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return grub_errno;
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/* Create new render target for text layer. */
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grub_video_create_render_target (&text_layer,
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virtual_screen.width,
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virtual_screen.height,
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GRUB_VIDEO_MODE_TYPE_RGB
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| GRUB_VIDEO_MODE_TYPE_ALPHA);
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if (grub_errno != GRUB_ERR_NONE)
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return grub_errno;
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/* As we want to have colors compatible with rendering target,
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we can only have those after mode is initialized. */
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grub_video_set_active_render_target (text_layer);
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virtual_screen.standard_color_setting = DEFAULT_STANDARD_COLOR;
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virtual_screen.term_color = GRUB_TERM_DEFAULT_NORMAL_COLOR;
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set_term_color (virtual_screen.term_color);
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grub_video_set_active_render_target (render_target);
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virtual_screen.bg_color_display = grub_video_map_rgba(0, 0, 0, 0);
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/* Clear out text buffer. */
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for (i = 0; i < virtual_screen.columns * virtual_screen.rows; i++)
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{
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virtual_screen.text_buffer[i].code = 0;
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clear_char (&(virtual_screen.text_buffer[i]));
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}
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return grub_errno;
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}
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void
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grub_gfxterm_schedule_repaint (void)
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{
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repaint_scheduled = 1;
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}
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grub_err_t
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grub_gfxterm_set_window (struct grub_video_render_target *target,
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int x, int y, int width, int height,
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int double_repaint,
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const char *font_name, int border_width)
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{
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/* Clean up any prior instance. */
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destroy_window ();
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/* Set the render target. */
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render_target = target;
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/* Create virtual screen. */
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if (grub_virtual_screen_setup (border_width, border_width,
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width - 2 * border_width,
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height - 2 * border_width,
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font_name)
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!= GRUB_ERR_NONE)
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{
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return grub_errno;
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}
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/* Set window bounds. */
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window.x = x;
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window.y = y;
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window.width = width;
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window.height = height;
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window.double_repaint = double_repaint;
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dirty_region_reset ();
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grub_gfxterm_schedule_repaint ();
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return grub_errno;
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}
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grub_err_t
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grub_gfxterm_fullscreen (void)
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{
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const char *font_name;
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struct grub_video_mode_info mode_info;
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grub_video_color_t color;
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grub_err_t err;
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int double_redraw;
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err = grub_video_get_info (&mode_info);
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/* Figure out what mode we ended up. */
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if (err)
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return err;
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grub_video_set_active_render_target (GRUB_VIDEO_RENDER_TARGET_DISPLAY);
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double_redraw = mode_info.mode_type & GRUB_VIDEO_MODE_TYPE_DOUBLE_BUFFERED
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&& !(mode_info.mode_type & GRUB_VIDEO_MODE_TYPE_UPDATING_SWAP);
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/* Make sure screen is black. */
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color = grub_video_map_rgb (0, 0, 0);
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grub_video_fill_rect (color, 0, 0, mode_info.width, mode_info.height);
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if (double_redraw)
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{
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grub_video_swap_buffers ();
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grub_video_fill_rect (color, 0, 0, mode_info.width, mode_info.height);
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}
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bitmap = 0;
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blend_text_bg = 0;
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/* Select the font to use. */
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font_name = grub_env_get ("gfxterm_font");
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if (! font_name)
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font_name = ""; /* Allow fallback to any font. */
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grub_gfxterm_decorator_hook = NULL;
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return grub_gfxterm_set_window (GRUB_VIDEO_RENDER_TARGET_DISPLAY,
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0, 0, mode_info.width, mode_info.height,
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double_redraw,
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font_name, DEFAULT_BORDER_WIDTH);
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}
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static grub_err_t
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grub_gfxterm_term_init (struct grub_term_output *term __attribute__ ((unused)))
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{
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char *tmp;
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grub_err_t err;
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const char *modevar;
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/* Parse gfxmode environment variable if set. */
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modevar = grub_env_get ("gfxmode");
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if (! modevar || *modevar == 0)
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err = grub_video_set_mode (DEFAULT_VIDEO_MODE,
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GRUB_VIDEO_MODE_TYPE_PURE_TEXT, 0);
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else
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{
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tmp = grub_xasprintf ("%s;" DEFAULT_VIDEO_MODE, modevar);
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if (!tmp)
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return grub_errno;
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err = grub_video_set_mode (tmp, GRUB_VIDEO_MODE_TYPE_PURE_TEXT, 0);
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grub_free (tmp);
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}
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if (err)
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return err;
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err = grub_gfxterm_fullscreen ();
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if (err)
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grub_video_restore ();
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return err;
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}
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static void
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destroy_window (void)
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{
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if (bitmap)
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{
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grub_video_bitmap_destroy (bitmap);
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bitmap = 0;
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blend_text_bg = 0;
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}
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repaint_callback = 0;
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grub_virtual_screen_free ();
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}
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static grub_err_t
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grub_gfxterm_term_fini (struct grub_term_output *term __attribute__ ((unused)))
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{
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unsigned i;
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destroy_window ();
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grub_video_restore ();
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for (i = 0; i < virtual_screen.columns * virtual_screen.rows; i++)
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{
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grub_free (virtual_screen.text_buffer[i].code);
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virtual_screen.text_buffer[i].code = 0;
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}
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/* Clear error state. */
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grub_errno = GRUB_ERR_NONE;
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return GRUB_ERR_NONE;
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}
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|
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static void
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redraw_screen_rect (unsigned int x, unsigned int y,
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unsigned int width, unsigned int height)
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{
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grub_video_color_t color;
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grub_video_rect_t saved_view;
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grub_video_set_active_render_target (render_target);
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/* Save viewport and set it to our window. */
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grub_video_get_viewport ((unsigned *) &saved_view.x,
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(unsigned *) &saved_view.y,
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(unsigned *) &saved_view.width,
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(unsigned *) &saved_view.height);
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grub_video_set_viewport (window.x, window.y, window.width, window.height);
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if (bitmap)
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{
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/* Render bitmap as background. */
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grub_video_blit_bitmap (bitmap, GRUB_VIDEO_BLIT_REPLACE, x, y,
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x, y,
|
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width, height);
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|
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/* If bitmap is smaller than requested blit area, use background
|
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color. */
|
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color = virtual_screen.bg_color_display;
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|
|
/* Fill right side of the bitmap if needed. */
|
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if ((x + width >= bitmap_width) && (y < bitmap_height))
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{
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int w = (x + width) - bitmap_width;
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int h = height;
|
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unsigned int tx = x;
|
|
|
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if (y + height >= bitmap_height)
|
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{
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h = bitmap_height - y;
|
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}
|
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|
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if (bitmap_width > tx)
|
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{
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tx = bitmap_width;
|
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}
|
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|
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/* Render background layer. */
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grub_video_fill_rect (color, tx, y, w, h);
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}
|
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|
|
/* Fill bottom side of the bitmap if needed. */
|
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if (y + height >= bitmap_height)
|
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{
|
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int h = (y + height) - bitmap_height;
|
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unsigned int ty = y;
|
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|
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if (bitmap_height > ty)
|
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{
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ty = bitmap_height;
|
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}
|
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|
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/* Render background layer. */
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grub_video_fill_rect (color, x, ty, width, h);
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}
|
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}
|
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else
|
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{
|
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/* Render background layer. */
|
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color = virtual_screen.bg_color_display;
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grub_video_fill_rect (color, x, y, width, height);
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}
|
|
|
|
if (blend_text_bg)
|
|
/* Render text layer as blended. */
|
|
grub_video_blit_render_target (text_layer, GRUB_VIDEO_BLIT_BLEND, x, y,
|
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x - virtual_screen.offset_x,
|
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y - virtual_screen.offset_y,
|
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width, height);
|
|
else
|
|
/* Render text layer as replaced (to get texts background color). */
|
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grub_video_blit_render_target (text_layer, GRUB_VIDEO_BLIT_REPLACE, x, y,
|
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x - virtual_screen.offset_x,
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y - virtual_screen.offset_y,
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width, height);
|
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|
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/* Restore saved viewport. */
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grub_video_set_viewport (saved_view.x, saved_view.y,
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saved_view.width, saved_view.height);
|
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grub_video_set_active_render_target (render_target);
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|
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if (repaint_callback)
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repaint_callback (x, y, width, height);
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|
}
|
|
|
|
static void
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dirty_region_reset (void)
|
|
{
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dirty_region.top_left_x = -1;
|
|
dirty_region.top_left_y = -1;
|
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dirty_region.bottom_right_x = -1;
|
|
dirty_region.bottom_right_y = -1;
|
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repaint_was_scheduled = 0;
|
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}
|
|
|
|
static int
|
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dirty_region_is_empty (void)
|
|
{
|
|
if ((dirty_region.top_left_x == -1)
|
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|| (dirty_region.top_left_y == -1)
|
|
|| (dirty_region.bottom_right_x == -1)
|
|
|| (dirty_region.bottom_right_y == -1))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
dirty_region_add (int x, int y, unsigned int width, unsigned int height)
|
|
{
|
|
if ((width == 0) || (height == 0))
|
|
return;
|
|
|
|
if (repaint_scheduled)
|
|
{
|
|
if (x > (int)virtual_screen.offset_x)
|
|
{
|
|
width += virtual_screen.offset_x - x;
|
|
x = virtual_screen.offset_x;
|
|
}
|
|
if (y > (int)virtual_screen.offset_y)
|
|
{
|
|
height += virtual_screen.offset_y - y;
|
|
y = virtual_screen.offset_y;
|
|
}
|
|
if (width < virtual_screen.width)
|
|
width = virtual_screen.width;
|
|
if (height < virtual_screen.height)
|
|
height = virtual_screen.height;
|
|
repaint_scheduled = 0;
|
|
repaint_was_scheduled = 1;
|
|
}
|
|
|
|
if (dirty_region_is_empty ())
|
|
{
|
|
dirty_region.top_left_x = x;
|
|
dirty_region.top_left_y = y;
|
|
dirty_region.bottom_right_x = x + width - 1;
|
|
dirty_region.bottom_right_y = y + height - 1;
|
|
}
|
|
else
|
|
{
|
|
if (x < dirty_region.top_left_x)
|
|
dirty_region.top_left_x = x;
|
|
if (y < dirty_region.top_left_y)
|
|
dirty_region.top_left_y = y;
|
|
if ((x + (int)width - 1) > dirty_region.bottom_right_x)
|
|
dirty_region.bottom_right_x = x + width - 1;
|
|
if ((y + (int)height - 1) > dirty_region.bottom_right_y)
|
|
dirty_region.bottom_right_y = y + height - 1;
|
|
}
|
|
}
|
|
|
|
static void
|
|
dirty_region_add_virtualscreen (void)
|
|
{
|
|
/* Mark virtual screen as dirty. */
|
|
dirty_region_add (virtual_screen.offset_x, virtual_screen.offset_y,
|
|
virtual_screen.width, virtual_screen.height);
|
|
}
|
|
|
|
|
|
static void
|
|
dirty_region_redraw (void)
|
|
{
|
|
int x;
|
|
int y;
|
|
int width;
|
|
int height;
|
|
|
|
if (dirty_region_is_empty ())
|
|
return;
|
|
|
|
x = dirty_region.top_left_x;
|
|
y = dirty_region.top_left_y;
|
|
|
|
width = dirty_region.bottom_right_x - x + 1;
|
|
height = dirty_region.bottom_right_y - y + 1;
|
|
|
|
if (repaint_was_scheduled && grub_gfxterm_decorator_hook)
|
|
grub_gfxterm_decorator_hook ();
|
|
|
|
redraw_screen_rect (x, y, width, height);
|
|
}
|
|
|
|
static inline void
|
|
paint_char (unsigned cx, unsigned cy)
|
|
{
|
|
struct grub_colored_char *p;
|
|
struct grub_font_glyph *glyph;
|
|
grub_video_color_t color;
|
|
grub_video_color_t bgcolor;
|
|
unsigned int x;
|
|
unsigned int y;
|
|
int ascent;
|
|
unsigned int height;
|
|
unsigned int width;
|
|
|
|
if (cy + virtual_screen.total_scroll >= virtual_screen.rows)
|
|
return;
|
|
|
|
/* Find out active character. */
|
|
p = (virtual_screen.text_buffer
|
|
+ cx + (cy * virtual_screen.columns));
|
|
|
|
p -= p->index;
|
|
|
|
/* Get glyph for character. */
|
|
glyph = grub_font_construct_glyph (virtual_screen.font, p->code);
|
|
if (!glyph)
|
|
{
|
|
grub_errno = GRUB_ERR_NONE;
|
|
return;
|
|
}
|
|
ascent = grub_font_get_ascent (virtual_screen.font);
|
|
|
|
width = virtual_screen.normal_char_width * calculate_character_width(glyph);
|
|
height = virtual_screen.normal_char_height;
|
|
|
|
color = p->fg_color;
|
|
bgcolor = p->bg_color;
|
|
|
|
x = cx * virtual_screen.normal_char_width;
|
|
y = (cy + virtual_screen.total_scroll) * virtual_screen.normal_char_height;
|
|
|
|
/* Render glyph to text layer. */
|
|
grub_video_set_active_render_target (text_layer);
|
|
grub_video_fill_rect (bgcolor, x, y, width, height);
|
|
grub_font_draw_glyph (glyph, color, x, y + ascent);
|
|
grub_video_set_active_render_target (render_target);
|
|
|
|
/* Mark character to be drawn. */
|
|
dirty_region_add (virtual_screen.offset_x + x, virtual_screen.offset_y + y,
|
|
width, height);
|
|
grub_free (glyph);
|
|
}
|
|
|
|
static inline void
|
|
write_char (void)
|
|
{
|
|
paint_char (virtual_screen.cursor_x, virtual_screen.cursor_y);
|
|
}
|
|
|
|
static inline void
|
|
draw_cursor (int show)
|
|
{
|
|
unsigned int x;
|
|
unsigned int y;
|
|
unsigned int width;
|
|
unsigned int height;
|
|
grub_video_color_t color;
|
|
|
|
write_char ();
|
|
|
|
if (!show)
|
|
return;
|
|
|
|
if (virtual_screen.cursor_y + virtual_screen.total_scroll
|
|
>= virtual_screen.rows)
|
|
return;
|
|
|
|
/* Determine cursor properties and position on text layer. */
|
|
x = virtual_screen.cursor_x * virtual_screen.normal_char_width;
|
|
width = virtual_screen.normal_char_width;
|
|
color = virtual_screen.fg_color;
|
|
y = ((virtual_screen.cursor_y + virtual_screen.total_scroll)
|
|
* virtual_screen.normal_char_height
|
|
+ grub_font_get_ascent (virtual_screen.font));
|
|
height = 2;
|
|
|
|
/* Render cursor to text layer. */
|
|
grub_video_set_active_render_target (text_layer);
|
|
grub_video_fill_rect (color, x, y, width, height);
|
|
grub_video_set_active_render_target (render_target);
|
|
|
|
/* Mark cursor to be redrawn. */
|
|
dirty_region_add (virtual_screen.offset_x + x,
|
|
virtual_screen.offset_y + y,
|
|
width, height);
|
|
}
|
|
|
|
static void
|
|
real_scroll (void)
|
|
{
|
|
unsigned int i, j, was_scroll;
|
|
grub_video_color_t color;
|
|
|
|
if (!virtual_screen.total_scroll)
|
|
return;
|
|
|
|
/* If we have bitmap, re-draw screen, otherwise scroll physical screen too. */
|
|
if (bitmap)
|
|
{
|
|
/* Scroll physical screen. */
|
|
grub_video_set_active_render_target (text_layer);
|
|
color = virtual_screen.bg_color;
|
|
grub_video_scroll (color, 0, -virtual_screen.normal_char_height
|
|
* virtual_screen.total_scroll);
|
|
|
|
/* Mark virtual screen to be redrawn. */
|
|
dirty_region_add_virtualscreen ();
|
|
}
|
|
else
|
|
{
|
|
grub_video_rect_t saved_view;
|
|
|
|
/* Remove cursor. */
|
|
draw_cursor (0);
|
|
|
|
grub_video_set_active_render_target (render_target);
|
|
|
|
i = window.double_repaint ? 2 : 1;
|
|
|
|
color = virtual_screen.bg_color;
|
|
|
|
while (i--)
|
|
{
|
|
/* Save viewport and set it to our window. */
|
|
grub_video_get_viewport ((unsigned *) &saved_view.x,
|
|
(unsigned *) &saved_view.y,
|
|
(unsigned *) &saved_view.width,
|
|
(unsigned *) &saved_view.height);
|
|
|
|
grub_video_set_viewport (window.x, window.y, window.width,
|
|
window.height);
|
|
|
|
/* Clear new border area. */
|
|
grub_video_fill_rect (color,
|
|
virtual_screen.offset_x,
|
|
virtual_screen.offset_y,
|
|
virtual_screen.width,
|
|
virtual_screen.normal_char_height
|
|
* virtual_screen.total_scroll);
|
|
|
|
grub_video_set_active_render_target (render_target);
|
|
dirty_region_redraw ();
|
|
|
|
/* Scroll physical screen. */
|
|
grub_video_scroll (color, 0, -virtual_screen.normal_char_height
|
|
* virtual_screen.total_scroll);
|
|
|
|
/* Restore saved viewport. */
|
|
grub_video_set_viewport (saved_view.x, saved_view.y,
|
|
saved_view.width, saved_view.height);
|
|
|
|
if (i)
|
|
grub_video_swap_buffers ();
|
|
}
|
|
dirty_region_reset ();
|
|
|
|
/* Scroll physical screen. */
|
|
grub_video_set_active_render_target (text_layer);
|
|
color = virtual_screen.bg_color;
|
|
grub_video_scroll (color, 0, -virtual_screen.normal_char_height
|
|
* virtual_screen.total_scroll);
|
|
|
|
grub_video_set_active_render_target (render_target);
|
|
|
|
}
|
|
|
|
was_scroll = virtual_screen.total_scroll;
|
|
virtual_screen.total_scroll = 0;
|
|
|
|
if (was_scroll > virtual_screen.rows)
|
|
was_scroll = virtual_screen.rows;
|
|
|
|
/* Draw shadow part. */
|
|
for (i = virtual_screen.rows - was_scroll;
|
|
i < virtual_screen.rows; i++)
|
|
for (j = 0; j < virtual_screen.columns; j++)
|
|
paint_char (j, i);
|
|
|
|
/* Draw cursor if visible. */
|
|
if (virtual_screen.cursor_state)
|
|
draw_cursor (1);
|
|
|
|
if (repaint_callback)
|
|
repaint_callback (window.x, window.y, window.width, window.height);
|
|
}
|
|
|
|
static void
|
|
scroll_up (void)
|
|
{
|
|
unsigned int i;
|
|
|
|
/* Clear first line in text buffer. */
|
|
for (i = 0; i < virtual_screen.columns; i++)
|
|
grub_free (virtual_screen.text_buffer[i].code);
|
|
|
|
/* Scroll text buffer with one line to up. */
|
|
grub_memmove (virtual_screen.text_buffer,
|
|
virtual_screen.text_buffer + virtual_screen.columns,
|
|
sizeof (*virtual_screen.text_buffer)
|
|
* virtual_screen.columns
|
|
* (virtual_screen.rows - 1));
|
|
|
|
/* Clear last line in text buffer. */
|
|
for (i = virtual_screen.columns * (virtual_screen.rows - 1);
|
|
i < virtual_screen.columns * virtual_screen.rows;
|
|
i++)
|
|
{
|
|
virtual_screen.text_buffer[i].code = 0;
|
|
clear_char (&(virtual_screen.text_buffer[i]));
|
|
}
|
|
|
|
virtual_screen.total_scroll++;
|
|
}
|
|
|
|
static void
|
|
grub_gfxterm_putchar (struct grub_term_output *term,
|
|
const struct grub_unicode_glyph *c)
|
|
{
|
|
if (c->base == '\a')
|
|
/* FIXME */
|
|
return;
|
|
|
|
/* Erase current cursor, if any. */
|
|
if (virtual_screen.cursor_state)
|
|
draw_cursor (0);
|
|
|
|
if (c->base == '\b' || c->base == '\n' || c->base == '\r')
|
|
{
|
|
switch (c->base)
|
|
{
|
|
case '\b':
|
|
if (virtual_screen.cursor_x > 0)
|
|
virtual_screen.cursor_x--;
|
|
break;
|
|
|
|
case '\n':
|
|
if (virtual_screen.cursor_y >= virtual_screen.rows - 1)
|
|
scroll_up ();
|
|
else
|
|
virtual_screen.cursor_y++;
|
|
break;
|
|
|
|
case '\r':
|
|
virtual_screen.cursor_x = 0;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
struct grub_colored_char *p;
|
|
unsigned char char_width;
|
|
|
|
/* Calculate actual character width for glyph. This is number of
|
|
times of normal_font_width. */
|
|
char_width = grub_gfxterm_getcharwidth (term, c);
|
|
|
|
/* If we are about to exceed line length, wrap to next line. */
|
|
if (virtual_screen.cursor_x + char_width > virtual_screen.columns)
|
|
{
|
|
if (virtual_screen.cursor_y >= virtual_screen.rows - 1)
|
|
scroll_up ();
|
|
else
|
|
virtual_screen.cursor_y++;
|
|
}
|
|
|
|
/* Find position on virtual screen, and fill information. */
|
|
p = (virtual_screen.text_buffer +
|
|
virtual_screen.cursor_x +
|
|
virtual_screen.cursor_y * virtual_screen.columns);
|
|
grub_free (p->code);
|
|
p->code = grub_unicode_glyph_dup (c);
|
|
if (!p->code)
|
|
grub_errno = GRUB_ERR_NONE;
|
|
p->fg_color = virtual_screen.fg_color;
|
|
p->bg_color = virtual_screen.bg_color;
|
|
p->width = char_width - 1;
|
|
p->index = 0;
|
|
|
|
/* If we have large glyph, add fixup info. */
|
|
if (char_width > 1)
|
|
{
|
|
unsigned i;
|
|
|
|
for (i = 1; i < char_width; i++)
|
|
{
|
|
grub_free (p[i].code);
|
|
p[i].code = grub_unicode_glyph_from_code (' ');
|
|
if (!p[i].code)
|
|
grub_errno = GRUB_ERR_NONE;
|
|
p[i].width = char_width - 1;
|
|
p[i].index = i;
|
|
}
|
|
}
|
|
|
|
/* Draw glyph. */
|
|
write_char ();
|
|
|
|
/* Make sure we scroll screen when needed and wrap line correctly. */
|
|
virtual_screen.cursor_x += char_width;
|
|
if (virtual_screen.cursor_x >= virtual_screen.columns)
|
|
{
|
|
virtual_screen.cursor_x = 0;
|
|
|
|
if (virtual_screen.cursor_y >= virtual_screen.rows - 1)
|
|
scroll_up ();
|
|
else
|
|
virtual_screen.cursor_y++;
|
|
}
|
|
}
|
|
|
|
/* Redraw cursor if it should be visible. */
|
|
/* Note: This will redraw the character as well, which means that the
|
|
above call to write_char is redundant when the cursor is showing. */
|
|
if (virtual_screen.cursor_state)
|
|
draw_cursor (1);
|
|
}
|
|
|
|
/* Use ASCII characters to determine normal character width. */
|
|
static unsigned int
|
|
calculate_normal_character_width (grub_font_t font)
|
|
{
|
|
struct grub_font_glyph *glyph;
|
|
unsigned int width = 0;
|
|
unsigned int i;
|
|
|
|
/* Get properties of every printable ASCII character. */
|
|
for (i = 32; i < 127; i++)
|
|
{
|
|
glyph = grub_font_get_glyph (font, i);
|
|
|
|
/* Skip unknown characters. Should never happen on normal conditions. */
|
|
if (! glyph)
|
|
continue;
|
|
|
|
if (glyph->device_width > width)
|
|
width = glyph->device_width;
|
|
}
|
|
|
|
return width;
|
|
}
|
|
|
|
static unsigned char
|
|
calculate_character_width (struct grub_font_glyph *glyph)
|
|
{
|
|
if (! glyph || glyph->device_width == 0)
|
|
return 1;
|
|
|
|
return (glyph->device_width
|
|
+ (virtual_screen.normal_char_width - 1))
|
|
/ virtual_screen.normal_char_width;
|
|
}
|
|
|
|
static grub_ssize_t
|
|
grub_gfxterm_getcharwidth (struct grub_term_output *term __attribute__ ((unused)),
|
|
const struct grub_unicode_glyph *c)
|
|
{
|
|
int dev_width;
|
|
dev_width = grub_font_get_constructed_device_width (virtual_screen.font, c);
|
|
|
|
if (dev_width == 0)
|
|
return 1;
|
|
|
|
return (dev_width + (virtual_screen.normal_char_width - 1))
|
|
/ virtual_screen.normal_char_width;
|
|
}
|
|
|
|
static grub_uint16_t
|
|
grub_virtual_screen_getwh (struct grub_term_output *term __attribute__ ((unused)))
|
|
{
|
|
return (virtual_screen.columns << 8) | virtual_screen.rows;
|
|
}
|
|
|
|
static grub_uint16_t
|
|
grub_virtual_screen_getxy (struct grub_term_output *term __attribute__ ((unused)))
|
|
{
|
|
return ((virtual_screen.cursor_x << 8) | virtual_screen.cursor_y);
|
|
}
|
|
|
|
static void
|
|
grub_gfxterm_gotoxy (struct grub_term_output *term __attribute__ ((unused)),
|
|
grub_uint8_t x, grub_uint8_t y)
|
|
{
|
|
if (x >= virtual_screen.columns)
|
|
x = virtual_screen.columns - 1;
|
|
|
|
if (y >= virtual_screen.rows)
|
|
y = virtual_screen.rows - 1;
|
|
|
|
/* Erase current cursor, if any. */
|
|
if (virtual_screen.cursor_state)
|
|
draw_cursor (0);
|
|
|
|
virtual_screen.cursor_x = x;
|
|
virtual_screen.cursor_y = y;
|
|
|
|
/* Draw cursor if visible. */
|
|
if (virtual_screen.cursor_state)
|
|
draw_cursor (1);
|
|
}
|
|
|
|
static void
|
|
grub_virtual_screen_cls (struct grub_term_output *term __attribute__ ((unused)))
|
|
{
|
|
grub_uint32_t i;
|
|
|
|
for (i = 0; i < virtual_screen.columns * virtual_screen.rows; i++)
|
|
clear_char (&(virtual_screen.text_buffer[i]));
|
|
|
|
virtual_screen.cursor_x = virtual_screen.cursor_y = 0;
|
|
}
|
|
|
|
static void
|
|
grub_gfxterm_cls (struct grub_term_output *term)
|
|
{
|
|
grub_video_color_t color;
|
|
|
|
/* Clear virtual screen. */
|
|
grub_virtual_screen_cls (term);
|
|
|
|
/* Clear text layer. */
|
|
grub_video_set_active_render_target (text_layer);
|
|
color = virtual_screen.bg_color;
|
|
grub_video_fill_rect (color, 0, 0,
|
|
virtual_screen.width, virtual_screen.height);
|
|
grub_video_set_active_render_target (render_target);
|
|
|
|
/* Mark virtual screen to be redrawn. */
|
|
dirty_region_add_virtualscreen ();
|
|
|
|
grub_gfxterm_refresh (term);
|
|
}
|
|
|
|
static void
|
|
grub_virtual_screen_setcolorstate (struct grub_term_output *term,
|
|
grub_term_color_state state)
|
|
{
|
|
switch (state)
|
|
{
|
|
case GRUB_TERM_COLOR_STANDARD:
|
|
virtual_screen.term_color = virtual_screen.standard_color_setting;
|
|
break;
|
|
|
|
case GRUB_TERM_COLOR_NORMAL:
|
|
virtual_screen.term_color = term->normal_color;
|
|
break;
|
|
|
|
case GRUB_TERM_COLOR_HIGHLIGHT:
|
|
virtual_screen.term_color = term->highlight_color;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* Change color to virtual terminal. */
|
|
set_term_color (virtual_screen.term_color);
|
|
}
|
|
|
|
static void
|
|
grub_gfxterm_setcursor (struct grub_term_output *term __attribute__ ((unused)),
|
|
int on)
|
|
{
|
|
if (virtual_screen.cursor_state != on)
|
|
{
|
|
if (virtual_screen.cursor_state)
|
|
draw_cursor (0);
|
|
else
|
|
draw_cursor (1);
|
|
|
|
virtual_screen.cursor_state = on;
|
|
}
|
|
}
|
|
|
|
static void
|
|
grub_gfxterm_refresh (struct grub_term_output *term __attribute__ ((unused)))
|
|
{
|
|
real_scroll ();
|
|
|
|
/* Redraw only changed regions. */
|
|
dirty_region_redraw ();
|
|
|
|
grub_video_swap_buffers ();
|
|
|
|
if (window.double_repaint)
|
|
dirty_region_redraw ();
|
|
dirty_region_reset ();
|
|
}
|
|
|
|
void
|
|
grub_gfxterm_set_repaint_callback (grub_gfxterm_repaint_callback_t func)
|
|
{
|
|
repaint_callback = func;
|
|
}
|
|
|
|
/* Option array indices. */
|
|
#define BACKGROUND_CMD_ARGINDEX_MODE 0
|
|
|
|
static const struct grub_arg_option background_image_cmd_options[] =
|
|
{
|
|
{"mode", 'm', 0, "Background image mode.", "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 (bitmap)
|
|
{
|
|
grub_video_bitmap_destroy (bitmap);
|
|
bitmap = 0;
|
|
blend_text_bg = 0;
|
|
|
|
/* Mark whole screen as dirty. */
|
|
dirty_region_add (0, 0, window.width, window.height);
|
|
}
|
|
|
|
/* If filename was provided, try to load that. */
|
|
if (argc >= 1)
|
|
{
|
|
/* Try to load new one. */
|
|
grub_video_bitmap_load (&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)
|
|
{
|
|
if (window.width != grub_video_bitmap_get_width (bitmap)
|
|
|| window.height != grub_video_bitmap_get_height (bitmap))
|
|
{
|
|
struct grub_video_bitmap *scaled_bitmap;
|
|
grub_video_bitmap_create_scaled (&scaled_bitmap,
|
|
window.width,
|
|
window.height,
|
|
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 (bitmap);
|
|
bitmap = scaled_bitmap;
|
|
blend_text_bg = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* If bitmap was loaded correctly, display it. */
|
|
if (bitmap)
|
|
{
|
|
/* Determine bitmap dimensions. */
|
|
bitmap_width = grub_video_bitmap_get_width (bitmap);
|
|
bitmap_height = grub_video_bitmap_get_height (bitmap);
|
|
|
|
/* Mark whole screen as dirty. */
|
|
dirty_region_add (0, 0, window.width, window.height);
|
|
}
|
|
}
|
|
|
|
/* 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)
|
|
{
|
|
grub_video_rgba_color_t color;
|
|
|
|
if (argc != 1)
|
|
return grub_error (GRUB_ERR_BAD_ARGUMENT, "missing operand");
|
|
|
|
/* 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], &color) != GRUB_ERR_NONE)
|
|
return grub_errno;
|
|
|
|
/* Destroy existing background bitmap if loaded. */
|
|
if (bitmap)
|
|
{
|
|
grub_video_bitmap_destroy (bitmap);
|
|
bitmap = 0;
|
|
|
|
/* Mark whole screen as dirty. */
|
|
dirty_region_add (0, 0, window.width, window.height);
|
|
}
|
|
|
|
/* Set the background and border colors. */
|
|
virtual_screen.bg_color = grub_video_map_rgba_color (color);
|
|
virtual_screen.bg_color_display = virtual_screen.bg_color;
|
|
blend_text_bg = 1;
|
|
|
|
/* Mark whole screen as dirty. */
|
|
dirty_region_add (0, 0, window.width, window.height);
|
|
|
|
/* All was ok. */
|
|
grub_errno = GRUB_ERR_NONE;
|
|
return grub_errno;
|
|
}
|
|
|
|
static struct grub_term_output grub_video_term =
|
|
{
|
|
.name = "gfxterm",
|
|
.init = grub_gfxterm_term_init,
|
|
.fini = grub_gfxterm_term_fini,
|
|
.putchar = grub_gfxterm_putchar,
|
|
.getcharwidth = grub_gfxterm_getcharwidth,
|
|
.getwh = grub_virtual_screen_getwh,
|
|
.getxy = grub_virtual_screen_getxy,
|
|
.gotoxy = grub_gfxterm_gotoxy,
|
|
.cls = grub_gfxterm_cls,
|
|
.setcolorstate = grub_virtual_screen_setcolorstate,
|
|
.setcursor = grub_gfxterm_setcursor,
|
|
.refresh = grub_gfxterm_refresh,
|
|
.flags = GRUB_TERM_CODE_TYPE_VISUAL_GLYPHS,
|
|
.normal_color = GRUB_TERM_DEFAULT_NORMAL_COLOR,
|
|
.highlight_color = GRUB_TERM_DEFAULT_HIGHLIGHT_COLOR,
|
|
.next = 0
|
|
};
|
|
|
|
static grub_extcmd_t background_image_cmd_handle;
|
|
static grub_command_t background_color_cmd_handle;
|
|
|
|
GRUB_MOD_INIT(gfxterm)
|
|
{
|
|
grub_term_register_output ("gfxterm", &grub_video_term);
|
|
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)
|
|
{
|
|
grub_unregister_command (background_color_cmd_handle);
|
|
grub_unregister_extcmd (background_image_cmd_handle);
|
|
grub_term_unregister_output (&grub_video_term);
|
|
}
|