160 lines
4.2 KiB
C
160 lines
4.2 KiB
C
/*
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* Copyright (c) 2008-2010 Travis Geiselbrecht
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* @file
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* @brief Manage graphics console
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*
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* This file contains functions to provide stdout to the graphics console.
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*
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* @ingroup graphics
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*/
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#include <debug.h>
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#include <lib/gfx.h>
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#include <lib/gfxconsole.h>
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#include <lib/font.h>
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#include <dev/display.h>
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/** @addtogroup graphics
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* @{
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*/
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/**
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* @brief Represent state of graphics console
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*/
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static struct {
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gfx_surface *surface;
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uint rows, columns;
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uint extray; // extra pixels left over if the rows doesn't fit precisely
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uint x, y;
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uint32_t front_color;
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uint32_t back_color;
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} gfxconsole;
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static void gfxconsole_putc(char c)
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{
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static enum { NORMAL, ESCAPE } state = NORMAL;
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static uint32_t p_num = 0;
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switch (state) {
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case NORMAL:
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{
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if(c == '\n' || c == '\r') {
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gfxconsole.x = 0;
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gfxconsole.y++;
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} else if (c == 0x1b) {
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p_num = 0;
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state = ESCAPE;
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} else {
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font_draw_char(gfxconsole.surface, c, gfxconsole.x * FONT_X, gfxconsole.y * FONT_Y, gfxconsole.front_color);
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gfxconsole.x++;
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}
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break;
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}
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case ESCAPE:
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{
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if (c >= '0' && c <= '9') {
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p_num = (p_num * 10) + (c - '0');
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} else if (c == 'D') {
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if (p_num <= gfxconsole.x)
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gfxconsole.x -= p_num;
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state = NORMAL;
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} else if (c == '[') {
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// eat this character
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} else {
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font_draw_char(gfxconsole.surface, c, gfxconsole.x * FONT_X, gfxconsole.y * FONT_Y, gfxconsole.front_color);
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gfxconsole.x++;
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state = NORMAL;
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}
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break;
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}
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}
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if(gfxconsole.x >= gfxconsole.columns) {
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gfxconsole.x = 0;
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gfxconsole.y++;
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}
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if(gfxconsole.y >= gfxconsole.rows) {
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// scroll up
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gfx_copyrect(gfxconsole.surface, 0, FONT_Y, gfxconsole.surface->width, gfxconsole.surface->height - FONT_Y - gfxconsole.extray, 0, 0);
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gfxconsole.y--;
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gfx_fillrect(gfxconsole.surface, 0, gfxconsole.surface->height - FONT_Y - gfxconsole.extray, gfxconsole.surface->width, FONT_Y, gfxconsole.back_color);
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gfx_flush(gfxconsole.surface);
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}
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}
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/**
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* @brief Initialize graphics console on given drawing surface.
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*
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* The graphics console subsystem is initialized, and registered as
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* an output device for debug output.
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*/
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void gfxconsole_start(gfx_surface *surface)
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{
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DEBUG_ASSERT(gfxconsole.surface == NULL);
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// set up the surface
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gfxconsole.surface = surface;
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// calculate how many rows/columns we have
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gfxconsole.rows = surface->height / FONT_Y;
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gfxconsole.columns = surface->width / FONT_X;
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gfxconsole.extray = surface->height - (gfxconsole.rows * FONT_Y);
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dprintf(SPEW, "gfxconsole: rows %d, columns %d, extray %d\n", gfxconsole.rows, gfxconsole.columns, gfxconsole.extray);
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// start in the upper left
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gfxconsole.x = 0;
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gfxconsole.y = 0;
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// colors are white and black for now
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gfxconsole.front_color = 0xffffffff;
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gfxconsole.back_color = 0;
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// register for debug callbacks
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register_debug_output(&gfxconsole_putc);
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}
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/**
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* @brief Initialize graphics console on default display
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*/
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void gfxconsole_start_on_display(void)
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{
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static bool started = false;
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if (started)
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return;
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/* pop up the console */
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struct display_info info;
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display_get_info(&info);
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gfx_surface *s = gfx_create_surface_from_display(&info);
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gfxconsole_start(s);
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started = true;
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}
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