/* $Id * * generic driver helper for graphic displays * * Copyright (C) 1999, 2000 Michael Reinelt * Copyright (C) 2004 The LCD4Linux Team * * 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. * * * $Log: drv_generic_graphic.c,v $ * Revision 1.15 2005/05/08 04:32:44 reinelt * CodingStyle added and applied * * Revision 1.14 2005/01/18 06:30:23 reinelt * added (C) to all copyright statements * * Revision 1.13 2005/01/09 10:53:24 reinelt * small type in plugin_uname fixed * new homepage lcd4linux.bulix.org * * Revision 1.12 2004/06/26 12:04:59 reinelt * * uh-oh... the last CVS log message messed up things a lot... * * Revision 1.11 2004/06/26 09:27:21 reinelt * * added '-W' to CFLAGS * changed all C++ comments to C ones * cleaned up a lot of signed/unsigned mistakes * * Revision 1.10 2004/06/20 10:09:55 reinelt * * 'const'ified the whole source * * Revision 1.9 2004/06/09 06:40:29 reinelt * * splash screen for T6963 driver * * Revision 1.8 2004/06/08 21:46:38 reinelt * * splash screen for X11 driver (and generic graphic driver) * * Revision 1.7 2004/06/01 06:45:30 reinelt * * some Fixme's processed * documented some code * * Revision 1.6 2004/03/03 03:47:04 reinelt * big patch from Martin Hejl: * - use qprintf() where appropriate * - save CPU cycles on gettimeofday() * - add quit() functions to free allocated memory * - fixed lots of memory leaks * * Revision 1.5 2004/02/29 14:30:59 reinelt * icon visibility fix for generic graphics from Xavier * * Revision 1.4 2004/02/24 05:55:04 reinelt * * X11 driver ported * * Revision 1.3 2004/02/22 17:35:41 reinelt * some fixes for generic graphic driver and T6963 * removed ^M from plugin_imon (Nico, are you editing under Windows?) * * Revision 1.2 2004/02/18 06:39:20 reinelt * T6963 driver for graphic displays finished * * Revision 1.1 2004/02/15 21:43:43 reinelt * T6963 driver nearly finished * framework for graphic displays done * i2c_sensors patch from Xavier * some more old generation files removed * */ /* * * 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 #include #include #include #include #include #include #include "debug.h" #include "cfg.h" #include "plugin.h" #include "widget.h" #include "widget_text.h" #include "widget_icon.h" #include "widget_bar.h" #include "drv.h" #include "drv_generic_graphic.h" #include "font_6x8.h" #ifdef WITH_DMALLOC #include #endif static char *Section = NULL; static char *Driver = NULL; int DROWS, DCOLS; /* display size (pixels!) */ int LROWS, LCOLS; /* layout size (pixels!) */ int XRES, YRES; /* pixels of one char cell */ unsigned char *drv_generic_graphic_FB = NULL; /****************************************/ /*** generic Framebuffer stuff ***/ /****************************************/ static void drv_generic_graphic_resizeFB(int rows, int cols) { unsigned char *newFB; int 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; /* allocate new Layout FB */ newFB = malloc(cols * rows * sizeof(char)); memset(newFB, 0, rows * cols * sizeof(char)); /* transfer contents */ if (drv_generic_graphic_FB != NULL) { for (row = 0; row < LROWS; row++) { for (col = 0; col < LCOLS; col++) { newFB[row * cols + col] = drv_generic_graphic_FB[row * LCOLS + col]; } } free(drv_generic_graphic_FB); } drv_generic_graphic_FB = newFB; LCOLS = cols; LROWS = rows; } int drv_generic_graphic_clear(void) { memset(drv_generic_graphic_FB, 0, DCOLS * DROWS * sizeof(*drv_generic_graphic_FB)); drv_generic_graphic_real_blit(0, 0, DROWS, DCOLS); return 0; } /****************************************/ /*** generic text handling ***/ /****************************************/ static void drv_generic_graphic_render(const int row, const int col, const char *txt) { int c, r, x, y; int 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') { for (y = 0; y < YRES; y++) { int mask = 1 << XRES; for (x = 0; x < XRES; x++) { mask >>= 1; drv_generic_graphic_FB[(r + y) * LCOLS + c + x] = Font_6x8[(int) *txt][y] & mask ? 1 : 0; } } c += XRES; txt++; } /* flush area */ drv_generic_graphic_real_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(YRES * 0, XRES * (cols - strlen(line1[i])) / 2, line1[i]); flag = 1; break; } } if (rows >= 2) { for (i = 0; line2[i]; i++) { if (strlen(line2[i]) <= cols) { drv_generic_graphic_render(YRES * 1, XRES * (cols - strlen(line2[i])) / 2, line2[i]); flag = 1; break; } } } if (msg1 && rows >= 3) { unsigned int len = strlen(msg1); if (len <= cols) { drv_generic_graphic_render(YRES * 2, XRES * (cols - len) / 2, msg1); flag = 1; } } if (msg2 && rows >= 4) { unsigned int len = strlen(msg2); if (len <= cols) { drv_generic_graphic_render(YRES * 3, XRES * (cols - len) / 2, msg2); flag = 1; } } return flag; } int drv_generic_graphic_draw(WIDGET * W) { WIDGET_TEXT *Text = W->data; drv_generic_graphic_render(YRES * W->row, XRES * W->col, Text->buffer); return 0; } /****************************************/ /*** generic icon handling ***/ /****************************************/ int drv_generic_graphic_icon_draw(WIDGET * W) { WIDGET_ICON *Icon = W->data; unsigned char *bitmap = Icon->bitmap + YRES * Icon->curmap; int row, col; int x, y; row = YRES * W->row; col = XRES * W->col; /* maybe grow layout framebuffer */ drv_generic_graphic_resizeFB(row + YRES, col + XRES); /* 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 (Icon->visible) { drv_generic_graphic_FB[i] = bitmap[y] & mask ? 1 : 0; } else { drv_generic_graphic_FB[i] = 0; } } } /* flush area */ drv_generic_graphic_real_blit(row, col, YRES, XRES); return 0; } /****************************************/ /*** generic bar handling ***/ /****************************************/ int drv_generic_graphic_bar_draw(WIDGET * W) { WIDGET_BAR *Bar = W->data; int row, col, len, res, rev, max, val1, val2; int x, y; DIRECTION dir; row = YRES * W->row; col = XRES * W->col; dir = Bar->direction; len = Bar->length; /* 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; for (x = 0; x < max; x++) { drv_generic_graphic_FB[(row + y) * LCOLS + col + x] = x < val ? !rev : rev; } } break; case DIR_SOUTH: val1 = max - val1; val2 = max - val2; rev = 1; case DIR_NORTH: for (y = 0; y < max; y++) { for (x = 0; x < XRES; x++) { int val = x < XRES / 2 ? val1 : val2; drv_generic_graphic_FB[(row + y) * LCOLS + col + x] = y < val ? !rev : rev; } } break; } /* flush area */ if (dir & (DIR_EAST | DIR_WEST)) { drv_generic_graphic_real_blit(row, col, YRES, XRES * len); } else { drv_generic_graphic_real_blit(row, col, YRES * len, XRES); } return 0; } /****************************************/ /*** generic init/quit ***/ /****************************************/ int drv_generic_graphic_init(const char *section, const char *driver) { Section = (char *) section; Driver = (char *) driver; /* init layout framebuffer */ LROWS = 0; LCOLS = 0; drv_generic_graphic_FB = NULL; drv_generic_graphic_resizeFB(DROWS, DCOLS); /* sanity check */ if (drv_generic_graphic_FB == NULL) { error("%s: framebuffer could not be allocated: malloc() failed", Driver); return -1; } return 0; } int drv_generic_graphic_quit(void) { if (drv_generic_graphic_FB) { free(drv_generic_graphic_FB); drv_generic_graphic_FB = NULL; } widget_unregister(); return (0); }