84 lines
1.7 KiB
C
84 lines
1.7 KiB
C
/*
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* Copyright (c) 2008-2010 Travis Geiselbrecht
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*
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* Use of this source code is governed by a MIT-style
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* license that can be found in the LICENSE file or at
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* https://opensource.org/licenses/MIT
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*/
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/**
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* @addtogroup graphics
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* @{
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*/
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/**
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* @file
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* @brief Console text display
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*
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* This module displays text on the console. The text is retained so that
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* it can be redisplayed if the display is cleared.
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*
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* Output is to the default graphics display
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*/
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#include <lk/debug.h>
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#include <lk/list.h>
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#include <stdlib.h>
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#include <string.h>
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#include <dev/display.h>
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#include <lib/gfx.h>
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#include <lib/font.h>
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#include <lib/text.h>
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#define TEXT_COLOR 0xffffffff
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static struct list_node text_list = LIST_INITIAL_VALUE(text_list);
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struct text_line {
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struct list_node node;
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const char *str;
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int x, y;
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};
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/**
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* @brief Add a string to the console text
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*/
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void text_draw(int x, int y, const char *string) {
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struct text_line *line = malloc(sizeof(struct text_line));
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line->str = strdup(string);
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line->x = x;
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line->y = y;
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list_add_head(&text_list, &line->node);
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text_update();
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}
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/**
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* @brief Refresh the display
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*/
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void text_update(void) {
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struct display_framebuffer fb;
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if (display_get_framebuffer(&fb) < 0)
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return;
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/* get the display's surface */
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gfx_surface *surface = gfx_create_surface_from_display(&fb);
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struct text_line *line;
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list_for_every_entry(&text_list, line, struct text_line, node) {
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const char *c;
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int x = line->x;
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for (c = line->str; *c; c++) {
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font_draw_char(surface, *c, x, line->y, TEXT_COLOR);
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x += FONT_X;
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}
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}
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gfx_flush(surface);
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gfx_surface_destroy(surface);
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}
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