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|
/* $Id: drv_generic_graphic.c 1003 2009-03-26 08:11:33Z michux $
* $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/drv_generic_graphic.c $
*
* generic driver helper for graphic displays
*
* Copyright (C) 1999, 2000 Michael Reinelt <michael@reinelt.co.at>
* Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
*
* This file is part of LCD4Linux.
*
* LCD4Linux 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 2, or (at your option)
* any later version.
*
* LCD4Linux 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 this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
/*
*
* exported functions:
*
* int drv_generic_graphic_init (char *section, char *driver);
* initializes the generic graphic driver
*
* int drv_generic_graphic_draw (WIDGET *W);
* renders Text widget into framebuffer
* calls drv_generic_graphic_real_blit()
*
* int drv_generic_graphic_icon_draw (WIDGET *W);
* renders Icon widget into framebuffer
* calls drv_generic_graphic_real_blit()
*
* int drv_generic_graphic_bar_draw (WIDGET *W);
* renders Bar widget into framebuffer
* calls drv_generic_graphic_real_blit()
*
* int drv_generic_graphic_quit (void);
* closes generic graphic driver
*
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <termios.h>
#include <fcntl.h>
#include "debug.h"
#include "cfg.h"
#include "plugin.h"
#include "layout.h"
#include "widget.h"
#include "property.h"
#include "widget_text.h"
#include "widget_icon.h"
#include "widget_bar.h"
#include "widget_image.h"
#include "rgb.h"
#include "drv.h"
#include "drv_generic.h"
#include "drv_generic_graphic.h"
#include "font_6x8.h"
#include "font_6x8_bold.h"
#ifdef WITH_DMALLOC
#include <dmalloc.h>
#endif
/* pixel colors */
RGBA FG_COL = {.R = 0x00,.G = 0x00,.B = 0x00,.A = 0xff };
RGBA BG_COL = {.R = 0xff,.G = 0xff,.B = 0xff,.A = 0xff };
RGBA BL_COL = {.R = 0xff,.G = 0xff,.B = 0xff,.A = 0x00 };
RGBA NO_COL = {.R = 0x00,.G = 0x00,.B = 0x00,.A = 0x00 };
static char *Section = NULL;
static char *Driver = NULL;
/* framebuffer */
static RGBA *drv_generic_graphic_FB[LAYERS] = { NULL, };
/* inverted colors */
static int INVERTED = 0;
/* must be implemented by the real driver */
void (*drv_generic_graphic_real_blit) () = NULL;
/****************************************/
/*** generic Framebuffer stuff ***/
/****************************************/
static void drv_generic_graphic_resizeFB(int rows, int cols)
{
RGBA *newFB;
int i, l, row, col;
/* Layout FB is large enough */
if (rows <= LROWS && cols <= LCOLS)
return;
/* get maximum values */
if (rows < LROWS)
rows = LROWS;
if (cols < LCOLS)
cols = LCOLS;
for (l = 0; l < LAYERS; l++) {
/* allocate and initialize new Layout FB */
newFB = malloc(cols * rows * sizeof(*newFB));
for (i = 0; i < rows * cols; i++)
newFB[i] = NO_COL;
/* transfer contents */
if (drv_generic_graphic_FB[l] != NULL) {
for (row = 0; row < LROWS; row++) {
for (col = 0; col < LCOLS; col++) {
newFB[row * cols + col] = drv_generic_graphic_FB[l][row * LCOLS + col];
}
}
free(drv_generic_graphic_FB[l]);
}
drv_generic_graphic_FB[l] = newFB;
}
LCOLS = cols;
LROWS = rows;
}
static void drv_generic_graphic_window(int pos, int size, int max, int *wpos, int *wsize)
{
int p1 = pos;
int p2 = pos + size;
*wpos = 0;
*wsize = 0;
if (p1 > max || p2 < 0 || size < 1)
return;
if (p1 < 0)
p1 = 0;
if (p2 > max)
p2 = max;
*wpos = p1;
*wsize = p2 - p1;
}
static void drv_generic_graphic_blit(const int row, const int col, const int height, const int width)
{
if (drv_generic_graphic_real_blit) {
int r, c, h, w;
drv_generic_graphic_window(row, height, DROWS, &r, &h);
drv_generic_graphic_window(col, width, DCOLS, &c, &w);
if (h > 0 && w > 0) {
drv_generic_graphic_real_blit(r, c, h, w);
}
}
}
static RGBA drv_generic_graphic_blend(const int row, const int col)
{
int l, o;
RGBA p;
RGBA ret;
ret.R = BL_COL.R;
ret.G = BL_COL.G;
ret.B = BL_COL.B;
ret.A = 0x00;
/* find first opaque layer */
/* layers below are fully covered */
o = LAYERS - 1;
for (l = 0; l < LAYERS; l++) {
p = drv_generic_graphic_FB[l][row * LCOLS + col];
if (p.A == 255) {
o = l;
break;
}
}
for (l = o; l >= 0; l--) {
p = drv_generic_graphic_FB[l][row * LCOLS + col];
switch (p.A) {
case 0:
break;
case 255:
ret.R = p.R;
ret.G = p.G;
ret.B = p.B;
ret.A = 0xff;
break;
default:
ret.R = (p.R * p.A + ret.R * (255 - p.A)) / 255;
ret.G = (p.G * p.A + ret.G * (255 - p.A)) / 255;
ret.B = (p.B * p.A + ret.B * (255 - p.A)) / 255;
ret.A = 0xff;
}
}
if (INVERTED) {
ret.R = 255 - ret.R;
ret.G = 255 - ret.G;
ret.B = 255 - ret.B;
}
return ret;
}
/****************************************/
/*** generic text handling ***/
/****************************************/
static void drv_generic_graphic_render(const int layer, const int row, const int col, const RGBA fg, const RGBA bg,
const char *style, const char *txt)
{
int c, r, x, y, len;
/* sanity checks */
if (layer < 0 || layer >= LAYERS) {
error("%s: layer %d out of bounds (0..%d)", Driver, layer, LAYERS - 1);
return;
}
len = strlen(txt);
/* maybe grow layout framebuffer */
drv_generic_graphic_resizeFB(row + YRES, col + XRES * len);
r = row;
c = col;
/* render text into layout FB */
while (*txt != '\0') {
unsigned char *chr;
if (strstr(style, "bold") != NULL) {
chr = Font_6x8_bold[(int) *(unsigned char *) txt];
} else {
chr = Font_6x8[(int) *(unsigned char *) txt];
}
for (y = 0; y < YRES; y++) {
int mask = 1 << XRES;
for (x = 0; x < XRES; x++) {
mask >>= 1;
if (chr[y] & mask)
drv_generic_graphic_FB[layer][(r + y) * LCOLS + c + x] = fg;
else
drv_generic_graphic_FB[layer][(r + y) * LCOLS + c + x] = bg;
}
}
c += XRES;
txt++;
}
/* flush area */
drv_generic_graphic_blit(row, col, YRES, XRES * len);
}
/* say hello to the user */
int drv_generic_graphic_greet(const char *msg1, const char *msg2)
{
char *line1[] = { "* LCD4Linux " VERSION " *",
"LCD4Linux " VERSION,
"* LCD4Linux *",
"LCD4Linux",
"L4Linux",
NULL
};
char *line2[] = { "http://lcd4linux.bulix.org",
"lcd4linux.bulix.org",
NULL
};
int i;
int flag = 0;
unsigned int cols = DCOLS / XRES;
unsigned int rows = DROWS / YRES;
for (i = 0; line1[i]; i++) {
if (strlen(line1[i]) <= cols) {
drv_generic_graphic_render(0, YRES * 0, XRES * ((cols - strlen(line1[i])) / 2), FG_COL, BG_COL, "norm",
line1[i]);
flag = 1;
break;
}
}
if (rows >= 2) {
for (i = 0; line2[i]; i++) {
if (strlen(line2[i]) <= cols) {
drv_generic_graphic_render(0, YRES * 1, XRES * ((cols - strlen(line2[i])) / 2), FG_COL, BG_COL, "norm",
line2[i]);
flag = 1;
break;
}
}
}
if (msg1 && rows >= 3) {
unsigned int len = strlen(msg1);
if (len <= cols) {
drv_generic_graphic_render(0, YRES * 2, XRES * ((cols - len) / 2), FG_COL, BG_COL, "norm", msg1);
flag = 1;
}
}
if (msg2 && rows >= 4) {
unsigned int len = strlen(msg2);
if (len <= cols) {
drv_generic_graphic_render(0, YRES * 3, XRES * ((cols - len) / 2), FG_COL, BG_COL, "norm", msg2);
flag = 1;
}
}
return flag;
}
int drv_generic_graphic_draw(WIDGET * W)
{
WIDGET_TEXT *Text = W->data;
RGBA fg, bg;
fg = W->fg_valid ? W->fg_color : FG_COL;
bg = W->bg_valid ? W->bg_color : BG_COL;
drv_generic_graphic_render(W->layer, YRES * W->row, XRES * W->col, fg, bg, P2S(&Text->style), Text->buffer);
return 0;
}
/****************************************/
/*** generic icon handling ***/
/****************************************/
int drv_generic_graphic_icon_draw(WIDGET * W)
{
WIDGET_ICON *Icon = W->data;
RGBA fg, bg;
unsigned char *bitmap = Icon->bitmap + YRES * Icon->curmap;
int layer, row, col;
int x, y;
int visible;
layer = W->layer;
row = YRES * W->row;
col = XRES * W->col;
fg = W->fg_valid ? W->fg_color : FG_COL;
bg = W->bg_valid ? W->bg_color : BG_COL;
/* sanity check */
if (layer < 0 || layer >= LAYERS) {
error("%s: layer %d out of bounds (0..%d)", Driver, layer, LAYERS - 1);
return -1;
}
/* maybe grow layout framebuffer */
drv_generic_graphic_resizeFB(row + YRES, col + XRES);
/* Icon visible? */
visible = P2N(&Icon->visible) > 0;
/* render icon */
for (y = 0; y < YRES; y++) {
int mask = 1 << XRES;
for (x = 0; x < XRES; x++) {
int i = (row + y) * LCOLS + col + x;
mask >>= 1;
if (visible) {
if (bitmap[y] & mask)
drv_generic_graphic_FB[layer][i] = fg;
else
drv_generic_graphic_FB[layer][i] = bg;
} else {
drv_generic_graphic_FB[layer][i] = BG_COL;
}
}
}
/* flush area */
drv_generic_graphic_blit(row, col, YRES, XRES);
return 0;
}
/****************************************/
/*** generic bar handling ***/
/****************************************/
int drv_generic_graphic_bar_draw(WIDGET * W)
{
WIDGET_BAR *Bar = W->data;
RGBA fg, bg, bar[2];
int layer, row, col, len, res, rev, max, val1, val2;
int x, y;
DIRECTION dir;
STYLE style;
layer = W->layer;
row = YRES * W->row;
col = XRES * W->col;
dir = Bar->direction;
style = Bar->style;
len = Bar->length;
fg = W->fg_valid ? W->fg_color : FG_COL;
bg = W->bg_valid ? W->bg_color : BG_COL;
bar[0] = Bar->color_valid[0] ? Bar->color[0] : fg;
bar[1] = Bar->color_valid[1] ? Bar->color[1] : fg;
/* sanity check */
if (layer < 0 || layer >= LAYERS) {
error("%s: layer %d out of bounds (0..%d)", Driver, layer, LAYERS - 1);
return -1;
}
/* maybe grow layout framebuffer */
if (dir & (DIR_EAST | DIR_WEST)) {
drv_generic_graphic_resizeFB(row + YRES, col + XRES * len);
} else {
drv_generic_graphic_resizeFB(row + YRES * len, col + XRES);
}
res = dir & (DIR_EAST | DIR_WEST) ? XRES : YRES;
max = len * res;
val1 = Bar->val1 * (double) (max);
val2 = Bar->val2 * (double) (max);
if (val1 < 1)
val1 = 1;
else if (val1 > max)
val1 = max;
if (val2 < 1)
val2 = 1;
else if (val2 > max)
val2 = max;
rev = 0;
switch (dir) {
case DIR_WEST:
val1 = max - val1;
val2 = max - val2;
rev = 1;
case DIR_EAST:
for (y = 0; y < YRES; y++) {
int val = y < YRES / 2 ? val1 : val2;
RGBA bc = y < YRES / 2 ? bar[0] : bar[1];
for (x = 0; x < max; x++) {
if (x < val)
drv_generic_graphic_FB[layer][(row + y) * LCOLS + col + x] = rev ? bg : bc;
else
drv_generic_graphic_FB[layer][(row + y) * LCOLS + col + x] = rev ? bc : bg;
if (style) {
drv_generic_graphic_FB[layer][(row + 0) * LCOLS + col + x] = fg;
drv_generic_graphic_FB[layer][(row + YRES - 1) * LCOLS + col + x] = fg;
}
}
if (style) {
drv_generic_graphic_FB[layer][(row + y) * LCOLS + col] = fg;
drv_generic_graphic_FB[layer][(row + y) * LCOLS + col + max - 1] = fg;
}
}
break;
case DIR_NORTH:
val1 = max - val1;
val2 = max - val2;
rev = 1;
case DIR_SOUTH:
for (x = 0; x < XRES; x++) {
int val = x < XRES / 2 ? val1 : val2;
RGBA bc = x < XRES / 2 ? bar[0] : bar[1];
for (y = 0; y < max; y++) {
if (y < val)
drv_generic_graphic_FB[layer][(row + y) * LCOLS + col + x] = rev ? bg : bc;
else
drv_generic_graphic_FB[layer][(row + y) * LCOLS + col + x] = rev ? bc : bg;
if (style) {
drv_generic_graphic_FB[layer][(row + y) * LCOLS + col + 0] = fg;
drv_generic_graphic_FB[layer][(row + y) * LCOLS + col + XRES - 1] = fg;
}
}
if (style) {
drv_generic_graphic_FB[layer][(row + 0) * LCOLS + col + x] = fg;
drv_generic_graphic_FB[layer][(row + max - 1) * LCOLS + col + x] = fg;
}
}
break;
}
/* flush area */
if (dir & (DIR_EAST | DIR_WEST)) {
drv_generic_graphic_blit(row, col, YRES, XRES * len);
} else {
drv_generic_graphic_blit(row, col, YRES * len, XRES);
}
return 0;
}
/****************************************/
/*** generic image handling ***/
/****************************************/
int drv_generic_graphic_image_draw(WIDGET * W)
{
WIDGET_IMAGE *Image = W->data;
int layer, row, col, width, height;
int x, y;
int visible;
layer = W->layer;
row = W->row;
col = W->col;
width = Image->width;
height = Image->height;
/* sanity check */
if (layer < 0 || layer >= LAYERS) {
error("%s: layer %d out of bounds (0..%d)", Driver, layer, LAYERS - 1);
return -1;
}
/* if no size or no image at all, do nothing */
if (width <= 0 || height <= 0 || Image->bitmap == NULL) {
return 0;
}
/* maybe grow layout framebuffer */
drv_generic_graphic_resizeFB(row + height, col + width);
/* render image */
visible = P2N(&Image->visible);
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
int i = (row + y) * LCOLS + col + x;
if (visible) {
drv_generic_graphic_FB[layer][i] = Image->bitmap[y * width + x];
} else {
drv_generic_graphic_FB[layer][i] = BG_COL;
}
}
}
/* flush area */
drv_generic_graphic_blit(row, col, height, width);
return 0;
}
/****************************************/
/*** generic init/quit ***/
/****************************************/
int drv_generic_graphic_init(const char *section, const char *driver)
{
int i, l;
char *color;
WIDGET_CLASS wc;
Section = (char *) section;
Driver = (char *) driver;
/* init layout framebuffer */
LROWS = 0;
LCOLS = 0;
for (l = 0; l < LAYERS; l++)
drv_generic_graphic_FB[l] = NULL;
drv_generic_graphic_resizeFB(DROWS, DCOLS);
/* sanity check */
for (l = 0; l < LAYERS; l++) {
if (drv_generic_graphic_FB[l] == NULL) {
error("%s: framebuffer could not be allocated: malloc() failed", Driver);
return -1;
}
}
/* init generic driver & register plugins */
drv_generic_init();
/* set default colors */
color = cfg_get(Section, "foreground", "000000ff");
if (color2RGBA(color, &FG_COL) < 0) {
error("%s: ignoring illegal color '%s'", Driver, color);
}
if (color)
free(color);
color = cfg_get(Section, "background", "ffffff00");
if (color2RGBA(color, &BG_COL) < 0) {
error("%s: ignoring illegal color '%s'", Driver, color);
}
if (color)
free(color);
color = cfg_get(Section, "basecolor", "ffffff");
if (color2RGBA(color, &BL_COL) < 0) {
error("%s: ignoring illegal color '%s'", Driver, color);
}
if (color)
free(color);
/* inverted display? */
cfg_number(section, "inverted", 0, 0, 1, &INVERTED);
/* register text widget */
wc = Widget_Text;
wc.draw = drv_generic_graphic_draw;
widget_register(&wc);
/* register icon widget */
wc = Widget_Icon;
wc.draw = drv_generic_graphic_icon_draw;
widget_register(&wc);
/* register bar widget */
wc = Widget_Bar;
wc.draw = drv_generic_graphic_bar_draw;
widget_register(&wc);
/* register image widget */
#ifdef WITH_IMAGE
wc = Widget_Image;
wc.draw = drv_generic_graphic_image_draw;
widget_register(&wc);
#endif
/* clear framebuffer but do not blit to display */
for (l = 0; l < LAYERS; l++)
for (i = 0; i < LCOLS * LROWS; i++)
drv_generic_graphic_FB[l][i] = NO_COL;
return 0;
}
int drv_generic_graphic_clear(void)
{
int i, l;
for (l = 0; l < LAYERS; l++)
for (i = 0; i < LCOLS * LROWS; i++)
drv_generic_graphic_FB[l][i] = NO_COL;
drv_generic_graphic_blit(0, 0, LROWS, LCOLS);
return 0;
}
RGBA drv_generic_graphic_rgb(const int row, const int col)
{
return drv_generic_graphic_blend(row, col);
}
unsigned char drv_generic_graphic_gray(const int row, const int col)
{
RGBA p = drv_generic_graphic_blend(row, col);
return (77 * p.R + 150 * p.G + 28 * p.B) / 255;
}
unsigned char drv_generic_graphic_black(const int row, const int col)
{
return drv_generic_graphic_gray(row, col) < 127;
}
int drv_generic_graphic_quit(void)
{
int l;
for (l = 0; l < LAYERS; l++) {
if (drv_generic_graphic_FB[l]) {
free(drv_generic_graphic_FB[l]);
drv_generic_graphic_FB[l] = NULL;
}
}
widget_unregister();
return (0);
}
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