[lcd4linux @ 2004-02-15 21:43:43 by reinelt]

T6963 driver nearly finished
framework for graphic displays done
i2c_sensors patch from Xavier
some more old generation files removed

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@367 3ae390bd-cb1e-0410-b409-cd5a39f66f1f

1 files changed, 313 insertions, 0 deletions

diff --git a/drv_generic_graphic.c b/drv_generic_graphic.c
new file mode 100644
index 0000000..058b83c
--- /dev/null
+++ b/drv_generic_graphic.c
@@ -0,0 +1,313 @@
+/* $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 1.1  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
+int GOTO_COST;    // number of bytes a goto command requires
+
+static unsigned char *LayoutFB  = NULL;
+static unsigned char *DisplayFB = 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 (LayoutFB!=NULL) {
+    for (row=0; row<LROWS; row++) {
+      for (col=0; col<LCOLS; col++) {
+	newFB[row*cols+col]=LayoutFB[row*LCOLS+col];
+      }
+    }
+    free (LayoutFB);
+  }
+  LayoutFB = newFB;
+  
+  LCOLS    = cols;
+  LROWS    = rows;
+}
+
+
+static void drv_generic_graphic_flush (int row0, int col0, int rows, int cols)
+{
+  debug ("flushing from (%d, %d) size (%d, %d)", row0, col0, rows, cols);
+}
+
+
+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;
+	LayoutFB[(row+y)*LCOLS+col+x] = Font_6x8[c][y]&mask ? 1:0;
+      }
+    }
+    col+=XRES;
+    txt++;
+  }
+  
+  // flush area
+  drv_generic_graphic_flush (row, 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;
+      DisplayFB[(row+y)*LCOLS+col+x] = Icon->visible ? 0 : bitmap[y]&mask ? 1 : 0;
+    }
+  }
+
+  // flush area
+  drv_generic_graphic_flush (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++) {
+	LayoutFB[(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;
+  	LayoutFB[(row+y)*LCOLS+col+x] = y<len ? !rev : rev;
+      }
+    }
+    break;
+  }
+  
+  // flush area
+  if (dir & (DIR_EAST|DIR_WEST)) {
+    drv_generic_graphic_flush (row, col, YRES, XRES*len);
+  } else {
+    drv_generic_graphic_flush (row, col, YRES*len, XRES);
+  }
+
+  return 0;
+}
+
+
+// ****************************************
+// *** generic init/quit                ***
+// ****************************************
+
+int drv_generic_graphic_init (char *section, char *driver)
+{
+  Section=section;
+  Driver=driver;
+
+  // init display framebuffer
+  DisplayFB = malloc(DCOLS*DROWS*sizeof(char));
+  memset (DisplayFB, 0, DROWS*DCOLS*sizeof(char));
+  
+  // init layout framebuffer
+  LROWS = 0;
+  LCOLS = 0;
+  LayoutFB=NULL;
+  drv_generic_graphic_resizeFB (DROWS, DCOLS);
+  
+  // sanity check
+  if (LayoutFB==NULL || DisplayFB==NULL) {
+    error ("%s: framebuffer could not be allocated: malloc() failed", Driver);
+    return -1;
+  }
+  
+  return 0;
+}
+
+
+int drv_generic_graphic_quit (void) 
+{
+  
+  if (LayoutFB) {
+    free(LayoutFB);
+    LayoutFB=NULL;
+  }
+  
+  if (DisplayFB) {
+    free(DisplayFB);
+    DisplayFB=NULL;
+  }
+  
+  return (0);
+}