lcd4linux.git - lcd4linux

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Diffstat (limited to 'drv_generic_graphic.c')

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1 files changed, 9 insertions, 1 deletions

/* $Id * * generic driver helper for graphic displays * * Copyright 1999, 2000 Michael Reinelt <reinelt@eunet.at> * Copyright 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. * * * $Log: drv_generic_graphic.c,v $ * 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 fuctions: * * Fixme: document me! * */ #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 "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 <dmalloc.h> #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) { 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_draw (WIDGET *W) { WIDGET_TEXT *Text=W->data; unsigned char *txt; int row, col, len; int x, y; row=YRES*W->row; col=XRES*W->col; txt=Text->buffer; len=strlen(txt); // maybe grow layout framebuffer drv_generic_graphic_resizeFB (row+YRES, col+XRES*len); // render text into layout FB while (*txt!='\0') { int c=*txt; for (y=0; y<YRES; y++) { int mask=1<<XRES; for (x=0; x<XRES; x++) { mask>>=1; drv_generic_graphic_FB[(row+y)*LCOLS+col+x] = Font_6x8[c][y]&mask ? 1:0; } } col+=XRES; txt++; } // flush area drv_generic_graphic_real_blit (YRES*W->row, XRES*W->col, YRES, XRES*len); 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++) { mask>>=1; drv_generic_graphic_FB[(row+y)*LCOLS+col+x] = Icon->visible ? 0 : bitmap[y]&mask ? 1 : 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++) { len=y<YRES/2 ? val1 : val2; for (x=0; x<max; x++) { drv_generic_graphic_FB[(row+y)*LCOLS+col+x] = x<len ? !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++) { len=x<XRES/2 ? val1 : val2; drv_generic_graphic_FB[(row+y)*LCOLS+col+x] = y<len ? !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 (char *section, char *driver) { char *font; Section=section; Driver=driver; font=cfg_get(section, "Font", "6x8"); if (font==NULL || *font=='\0') { error ("%s: no '%s.Font' entry from %s", Driver, section, cfg_source()); return -1; } XRES = -1; YRES = -1; if (sscanf(font, "%dx%d", &XRES, &YRES)!=2 || XRES<1 || YRES<1) { error ("%s: bad Font '%s' from %s", Driver, font, cfg_source()); return -1; } // 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; } return (0); }


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