-/* $Id: drv_generic_text.c,v 1.21 2004/06/26 12:04:59 reinelt Exp $
+/* $Id: drv_generic_text.c,v 1.22 2004/11/28 15:50:24 reinelt Exp $
*
* generic driver helper for text-based displays
*
*
*
* $Log: drv_generic_text.c,v $
+ * Revision 1.22 2004/11/28 15:50:24 reinelt
+ * Cwlinux fixes (invalidation of user-defined chars)
+ *
* Revision 1.21 2004/06/26 12:04:59 reinelt
*
* uh-oh... the last CVS log message messed up things a lot...
* extern int DROWS, DCOLS; display size
* extern int LROWS, LCOLS; layout size
* extern int XRES, YRES; pixel width/height of one char
- * extern int GOTO_COST; number of bytes a goto command requires
* extern int CHARS, CHAR0; number of user-defineable characters, ASCII of first char
* extern int ICONS; number of user-defineable characters reserved for icons
+ * extern int GOTO_COST; number of bytes a goto command requires
+ * extern int INVALIDATE; re-send a modified userdefined char?
*
*
* these functions must be implemented by the real driver:
int val2;
DIRECTION dir;
int segment;
+ int invalid;
} BAR;
typedef struct {
static char *Driver=NULL;
-int DROWS, DCOLS; /* display size */
-int LROWS, LCOLS; /* layout size */
-int XRES, YRES; /* pixels of one char cell */
-int GOTO_COST; /* number of bytes a goto command requires */
-int CHARS, CHAR0; /* number of user-defineable characters, ASCII of first char */
-int ICONS; /* number of user-defineable characters reserved for icons */
+int DROWS = 20; /* display size: rows */
+int DCOLS = 4; /* display size: columns */
+int LROWS = 20; /* layout size: rows */
+int LCOLS = 4; /* layout size: columns */
+int XRES = 6; /* pixels of one char cell */
+int YRES = 8; /* pixels of one char cell */
+int CHARS = 0; /* number of user-defineable characters */
+int CHAR0 = 0; /* ASCII of first user-defineable char */
+int ICONS = 0; /* number of user-defineable characters reserved for icons */
+
+int GOTO_COST = 0; /* number of bytes a goto command requires */
+int INVALIDATE = 0; /* re-send a modified userdefined char? */
static char *LayoutFB = NULL;
int i, row, col;
/* Layout FB is large enough */
- if (rows<=LROWS && cols<=LCOLS)
+ if (rows <= LROWS && cols <= LCOLS)
return;
/* get maximum values */
- if (rows<LROWS) rows=LROWS;
- if (cols<LCOLS) cols=LCOLS;
+ if (rows < LROWS) rows = LROWS;
+ if (cols < LCOLS) cols = LCOLS;
/* allocate new Layout FB */
- newFB=malloc(cols*rows*sizeof(char));
- memset (newFB, ' ', rows*cols*sizeof(char));
+ newFB = malloc(cols * rows * sizeof(char));
+ memset (newFB, ' ', 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];
+ 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);
/* resize Bar buffer */
if (BarFB) {
- newBar=malloc (rows*cols*sizeof(BAR));
+ newBar = malloc (rows * cols * sizeof(BAR));
- for (i=0; i<rows*cols; i++) {
+ for (i = 0; i < rows * cols; i++) {
newBar[i].val1 = -1;
newBar[i].val2 = -1;
newBar[i].dir = 0;
newBar[i].segment = -1;
+ newBar[i].invalid = 0;
}
/* transfer contents */
- for (row=0; row<LROWS; row++) {
- for (col=0; col<LCOLS; col++) {
- newBar[row*cols+col]=BarFB[row*LCOLS+col];
+ for (row = 0; row < LROWS; row++) {
+ for (col = 0; col < LCOLS; col++) {
+ newBar[row * cols + col] = BarFB[row * LCOLS + col];
}
}
free (BarFB);
- BarFB=newBar;
+ BarFB = newBar;
}
- LCOLS = cols;
- LROWS = rows;
+ LCOLS = cols;
+ LROWS = rows;
}
Driver = (char*)driver;
/* init display framebuffer */
- DisplayFB = (char*)malloc(DCOLS*DROWS*sizeof(char));
- memset (DisplayFB, ' ', DROWS*DCOLS*sizeof(char));
+ DisplayFB = (char*)malloc(DCOLS * DROWS * sizeof(char));
+ memset (DisplayFB, ' ', DROWS * DCOLS * sizeof(char));
/* init layout framebuffer */
LROWS = 0;
LCOLS = 0;
- LayoutFB=NULL;
+ LayoutFB = NULL;
drv_generic_text_resizeFB (DROWS, DCOLS);
/* sanity check */
- if (LayoutFB==NULL || DisplayFB==NULL) {
+ if (LayoutFB == NULL || DisplayFB == NULL) {
error ("%s: framebuffer could not be allocated: malloc() failed", Driver);
return -1;
}
for (i = 0; line1[i]; i++) {
if (strlen(line1[i]) <= (unsigned)DCOLS) {
- drv_generic_text_real_write (0, (DCOLS-strlen(line1[i]))/2, line1[i], strlen(line1[i]));
+ drv_generic_text_real_write (0, (DCOLS - strlen(line1[i])) / 2, line1[i], strlen(line1[i]));
flag = 1;
break;
}
if (DROWS >= 2) {
for (i = 0; line2[i]; i++) {
if (strlen(line2[i]) <= (unsigned)DCOLS) {
- drv_generic_text_real_write (1, (DCOLS-strlen(line2[i]))/2, line2[i], strlen(line2[i]));
+ drv_generic_text_real_write (1, (DCOLS - strlen(line2[i])) / 2, line2[i], strlen(line2[i]));
flag = 1;
break;
}
if (msg1 && DROWS >= 3) {
int len = strlen(msg1);
if ( len <= DCOLS) {
- drv_generic_text_real_write (2, (DCOLS-len)/2, msg1, len);
+ drv_generic_text_real_write (2, (DCOLS-len) / 2, msg1, len);
flag = 1;
}
}
if (msg2 && DROWS >= 4) {
int len = strlen(msg2);
if ( len <= DCOLS) {
- drv_generic_text_real_write (3, (DCOLS-len)/2, msg2, len);
+ drv_generic_text_real_write (3, (DCOLS-len) / 2, msg2, len);
flag = 1;
}
}
int drv_generic_text_draw (WIDGET *W)
{
- WIDGET_TEXT *Text=W->data;
+ WIDGET_TEXT *Text = W->data;
char *txt, *fb1, *fb2;
int row, col, col0, len, end;
- row=W->row;
- col=W->col;
- txt=Text->buffer;
- len=strlen(txt);
- end=col+len;
+ row = W->row;
+ col = W->col;
+ txt = Text->buffer;
+ len = strlen(txt);
+ end = col + len;
/* maybe grow layout framebuffer */
drv_generic_text_resizeFB (row+1, col+len);
fb2 = DisplayFB + row*DCOLS;
/* transfer new text into layout buffer */
- memcpy (fb1+col, txt, len);
+ memcpy (fb1 + col, txt, len);
if (row<DROWS) {
- for (; col<=end && col<DCOLS; col++) {
+ for (; col <= end && col < DCOLS; col++) {
int pos1, pos2, equal;
- if (fb1[col]==fb2[col]) continue;
+ if (fb1[col] == fb2[col]) continue;
col0 = col;
- for (pos1=col, pos2=pos1, col++, equal=0; col<=end && col<DCOLS; col++) {
- if (fb1[col]==fb2[col]) {
+ for (pos1 = col, pos2 = pos1, col++, equal = 0; col <= end && col < DCOLS; col++) {
+ if (fb1[col] == fb2[col]) {
/* If we find just one equal byte, we don't break, because this */
/* would require a goto, which takes several bytes, too. */
- if (++equal>GOTO_COST) break;
+ if (++equal > GOTO_COST) break;
} else {
- pos2=col;
- equal=0;
+ pos2 = col;
+ equal = 0;
}
}
memcpy ( fb2+pos1, fb1+pos1, pos2-pos1+1);
if (LayoutFB) {
free(LayoutFB);
- LayoutFB=NULL;
+ LayoutFB = NULL;
}
if (DisplayFB) {
free(DisplayFB);
- DisplayFB=NULL;
+ DisplayFB = NULL;
}
if (BarFB) {
free (BarFB);
- BarFB=NULL;
+ BarFB = NULL;
}
widget_unregister();
int drv_generic_text_icon_init (void)
{
- if (cfg_number(Section, "Icons", 0, 0, CHARS, &ICONS)<0) return -1;
+ if (cfg_number(Section, "Icons", 0, 0, CHARS, &ICONS) < 0) return -1;
if (ICONS>0) {
info ("%s: reserving %d of %d user-defined characters for icons", Driver, ICONS, CHARS);
}
int drv_generic_text_icon_draw (WIDGET *W)
{
- static int icon_counter=0;
+ static int icon_counter = 0;
WIDGET_ICON *Icon = W->data;
int row, col;
+ int l_idx, d_idx;
+ int invalidate = 0;
unsigned char ascii;
row = W->row;
drv_generic_text_resizeFB (row+1, col+1);
/* icon deactivated? */
- if (Icon->ascii==-2) return 0;
+ if (Icon->ascii == -2) return 0;
/* ASCII already assigned? */
- if (Icon->ascii==-1) {
- if (icon_counter>=ICONS) {
+ if (Icon->ascii == -1) {
+ if (icon_counter >= ICONS) {
error ("cannot process icon '%s': out of icons", W->name);
- Icon->ascii=-2;
+ Icon->ascii = -2;
return -1;
}
icon_counter++;
- Icon->ascii=CHAR0+CHARS-icon_counter;
+ Icon->ascii = CHAR0 + CHARS - icon_counter;
}
/* maybe redefine icon */
- if (Icon->curmap!=Icon->prvmap) {
- drv_generic_text_real_defchar(Icon->ascii, Icon->bitmap+YRES*Icon->curmap);
+ if (Icon->curmap != Icon->prvmap && Icon->visible) {
+ Icon->prvmap = Icon->curmap;
+ drv_generic_text_real_defchar(Icon->ascii, Icon->bitmap + YRES * Icon->curmap);
+ invalidate = INVALIDATE;
}
/* use blank if invisible */
- ascii=Icon->visible?Icon->ascii:' ';
+ ascii = Icon->visible ? Icon->ascii : ' ';
+ /* index into the two framebuffers */
+ l_idx = row * LCOLS + col;
+ d_idx = row * DCOLS + col;
+
/* transfer icon into layout buffer */
- LayoutFB[row*LCOLS+col]=ascii;
+ LayoutFB[l_idx] = ascii;
/* maybe send icon to the display */
- if (row < DROWS && col < DCOLS && DisplayFB[row*DCOLS+col] != ascii) {
- DisplayFB[row*DCOLS+col]=ascii;
- drv_generic_text_real_write (row, col, DisplayFB+row*DCOLS+col, 1);
+ if (row < DROWS && col < DCOLS && (DisplayFB[d_idx] != ascii || invalidate)) {
+ DisplayFB[d_idx] = ascii;
+ drv_generic_text_real_write (row, col, DisplayFB + d_idx, 1);
}
return 0;
{
int i;
- for (i=0; i<LROWS*LCOLS; i++) {
+ for (i = 0; i < LROWS*LCOLS; i++) {
BarFB[i].val1 = -1;
BarFB[i].val2 = -1;
BarFB[i].dir = 0;
BarFB[i].segment = -1;
+ BarFB[i].invalid = 0;
}
- for (i=0; i<nSegment;i++) {
+ for (i = 0; i < nSegment; i++) {
Segment[i].used = 0;
}
}
{
if (BarFB) free (BarFB);
- if ((BarFB=malloc (LROWS*LCOLS*sizeof(BAR)))==NULL) {
+ if ((BarFB = malloc (LROWS * LCOLS * sizeof(BAR))) == NULL) {
error ("bar buffer allocation failed: out of memory");
return -1;
}
Single_Segments = single_segments;
- nSegment=0;
- fSegment=0;
+ nSegment = 0;
+ fSegment = 0;
drv_generic_text_bar_clear();
void drv_generic_text_bar_add_segment(const int val1, const int val2, const DIRECTION dir, const int ascii)
{
- Segment[fSegment].val1=val1;
- Segment[fSegment].val2=val2;
- Segment[fSegment].dir=dir;
- Segment[fSegment].used=0;
- Segment[fSegment].ascii=ascii;
+ Segment[fSegment].val1 = val1;
+ Segment[fSegment].val2 = val2;
+ Segment[fSegment].dir = dir;
+ Segment[fSegment].used = 0;
+ Segment[fSegment].ascii = ascii;
fSegment++;
- nSegment=fSegment;
+ nSegment = fSegment;
}
static void drv_generic_text_bar_create_bar (int row, int col, const DIRECTION dir, int len, int val1, int val2)
{
- int rev=0;
+ int rev = 0;
switch (dir) {
case DIR_WEST:
case DIR_EAST:
while (len > 0 && col < LCOLS) {
- BarFB[row*LCOLS+col].dir=dir;
- BarFB[row*LCOLS+col].segment=-1;
+ BarFB[row*LCOLS+col].dir = dir;
+ BarFB[row*LCOLS+col].segment = -1;
if (val1 >= XRES) {
- BarFB[row*LCOLS+col].val1 = rev?0:XRES;
+ BarFB[row*LCOLS+col].val1 = rev ? 0 : XRES;
val1 -= XRES;
} else {
- BarFB[row*LCOLS+col].val1 = rev?XRES-val1:val1;
+ BarFB[row*LCOLS+col].val1 = rev ? XRES-val1 : val1;
val1 = 0;
}
if (val2 >= XRES) {
- BarFB[row*LCOLS+col].val2 = rev?0:XRES;
+ BarFB[row*LCOLS+col].val2 = rev ? 0 : XRES;
val2 -= XRES;
} else {
- BarFB[row*LCOLS+col].val2 = rev?XRES-val2:val2;
+ BarFB[row*LCOLS+col].val2 = rev ? XRES-val2 : val2;
val2 = 0;
}
len--;
case DIR_NORTH:
while (len > 0 && row < LROWS) {
- BarFB[row*LCOLS+col].dir=dir;
- BarFB[row*LCOLS+col].segment=-1;
+ BarFB[row*LCOLS+col].dir = dir;
+ BarFB[row*LCOLS+col].segment = -1;
if (val1 >= YRES) {
- BarFB[row*LCOLS+col].val1 = rev?0:YRES;
+ BarFB[row*LCOLS+col].val1 = rev ? 0 : YRES;
val1 -= YRES;
} else {
- BarFB[row*LCOLS+col].val1 = rev?YRES-val1:val1;
+ BarFB[row*LCOLS+col].val1 = rev ? YRES-val1 : val1;
val1 = 0;
}
if (val2 >= YRES) {
- BarFB[row*LCOLS+col].val2 = rev?0:YRES;
+ BarFB[row*LCOLS+col].val2 = rev ? 0 : YRES;
val2 -= YRES;
} else {
- BarFB[row*LCOLS+col].val2 = rev?YRES-val2:val2;
+ BarFB[row*LCOLS+col].val2 = rev ? YRES - val2 : val2;
val2 = 0;
}
len--;
row++;
}
break;
-
}
}
int res, l1, l2;
/* find first unused segment */
- for (i=fSegment; i<nSegment && Segment[i].used; i++);
+ for (i = fSegment; i < nSegment && Segment[i].used; i++);
/* pack unused segments */
- for (j=i+1; j<nSegment; j++) {
+ for (j = i+1; j < nSegment; j++) {
if (Segment[j].used)
- Segment[i++]=Segment[j];
+ Segment[i++] = Segment[j];
}
- nSegment=i;
+ nSegment = i;
/* create needed segments */
- for (n=0; n<LROWS*LCOLS; n++) {
- if (BarFB[n].dir==0) continue;
- res=BarFB[n].dir & (DIR_EAST|DIR_WEST) ? XRES:YRES;
- for (i=0; i<nSegment; i++) {
+ for (n = 0; n < LROWS*LCOLS; n++) {
+ if (BarFB[n].dir == 0) continue;
+ res = BarFB[n].dir & (DIR_EAST|DIR_WEST) ? XRES:YRES;
+ for (i = 0; i < nSegment; i++) {
if (Segment[i].dir & BarFB[n].dir) {
- l1 = Segment[i].val1; if (l1>res) l1=res;
- l2 = Segment[i].val2; if (l2>res) l2=res;
+ l1 = Segment[i].val1; if (l1 > res) l1=res;
+ l2 = Segment[i].val2; if (l2 > res) l2=res;
if (l1 == BarFB[n].val1 && l2 == BarFB[n].val2) break;
}
}
- if (i==nSegment) {
+ if (i == nSegment) {
nSegment++;
- Segment[i].val1=BarFB[n].val1;
- Segment[i].val2=BarFB[n].val2;
- Segment[i].dir=BarFB[n].dir;
- Segment[i].used=0;
- Segment[i].ascii=-1;
+ Segment[i].val1 = BarFB[n].val1;
+ Segment[i].val2 = BarFB[n].val2;
+ Segment[i].dir = BarFB[n].dir;
+ Segment[i].used = 0;
+ Segment[i].ascii = -1;
}
- BarFB[n].segment=i;
+ BarFB[n].segment = i;
}
}
int res;
int i1, i2, j1, j2;
- if (i==j) return 65535;
+ if (i == j) return 65535;
if (!(Segment[i].dir & Segment[j].dir)) return 65535;
res = Segment[i].dir&(DIR_EAST|DIR_WEST) ? XRES:YRES;
- i1=Segment[i].val1; if (i1>res) i1=res;
- i2=Segment[i].val2; if (i2>res) i2=res;
- j1=Segment[j].val1; if (j1>res) j1=res;
- j2=Segment[j].val2; if (j2>res) j2=res;
+ i1 = Segment[i].val1; if (i1 > res) i1 = res;
+ i2 = Segment[i].val2; if (i2 > res) i2 = res;
+ j1 = Segment[j].val1; if (j1 > res) j1 = res;
+ j2 = Segment[j].val2; if (j2 > res) j2 = res;
- if (i1==0 && j1!=0) return 65535;
- if (i2==0 && j2!=0) return 65535;
- if (i1==res && j1<res) return 65535;
- if (i2==res && j2<res) return 65535;
- if (i1==1 && j1!=1 && i2 > 0) return 65535;
- if (i2==1 && j2!=1 && j1 > 0) return 65535;
- if (i1==i2 && j1!=j2) return 65535;
+ if (i1 == 0 && j1 != 0) return 65535;
+ if (i2 == 0 && j2 != 0) return 65535;
+ if (i1 == res && j1 < res) return 65535;
+ if (i2 == res && j2 < res) return 65535;
+ if (i1 == 1 && j1 != 1 && i2 > 0) return 65535;
+ if (i2 == 1 && j2 != 1 && j1 > 0) return 65535;
+ if (i1 == i2 && j1 != j2) return 65535;
- return (i1-j1)*(i1-j1)+(i2-j2)*(i2-j2);
+ return (i1-j1)*(i1-j1) + (i2-j2)*(i2-j2);
}
return;
}
- for (i=0; i<nSegment; i++) {
- for (j=0; j<nSegment; j++) {
- error[i][j]=drv_generic_text_bar_segment_error(i,j);
+ for (i = 0; i < nSegment; i++) {
+ for (j = 0; j < nSegment; j++) {
+ error[i][j] = drv_generic_text_bar_segment_error(i, j);
}
}
- while (nSegment>fSegment+CHARS-ICONS) {
+ while (nSegment > fSegment + CHARS - ICONS) {
- min=65535;
- pack_i=-1;
- pack_j=-1;
- for (i=fSegment; i<nSegment; i++) {
+ min = 65535;
+ pack_i = -1;
+ pack_j = -1;
+ for (i = fSegment; i < nSegment; i++) {
if (pass1 && Segment[i].used) continue;
- for (j=0; j<nSegment; j++) {
- if (error[i][j]<min) {
- min=error[i][j];
- pack_i=i;
- pack_j=j;
+ for (j = 0; j < nSegment; j++) {
+ if (error[i][j] < min) {
+ min = error[i][j];
+ pack_i = i;
+ pack_j = j;
}
}
}
- if (pack_i==-1) {
+ if (pack_i == -1) {
if (pass1) {
- pass1=0;
+ pass1 = 0;
continue;
} else {
error ("unable to compact bar characters");
error ("Segment[0].val1=%d val2=%d", Segment[0].val1, Segment[0].val2);
error ("Segment[1].val1=%d val2=%d", Segment[1].val1, Segment[1].val2);
error ("Segment[2].val1=%d val2=%d", Segment[2].val1, Segment[2].val2);
- nSegment=CHARS-ICONS;
+ nSegment = CHARS - ICONS;
break;
}
}
#endif
nSegment--;
- Segment[pack_i]=Segment[nSegment];
+ Segment[pack_i] = Segment[nSegment];
- for (i=0; i<nSegment; i++) {
- error[pack_i][i]=error[nSegment][i];
- error[i][pack_i]=error[i][nSegment];
+ for (i = 0; i < nSegment; i++) {
+ error[pack_i][i] = error[nSegment][i];
+ error[i][pack_i] = error[i][nSegment];
}
- for (n=0; n<LROWS*LCOLS; n++) {
- if (BarFB[n].segment==pack_i) BarFB[n].segment=pack_j;
- if (BarFB[n].segment==nSegment) BarFB[n].segment=pack_i;
+ for (n = 0; n < LROWS * LCOLS; n++) {
+ if (BarFB[n].segment == pack_i) BarFB[n].segment = pack_j;
+ if (BarFB[n].segment == nSegment) BarFB[n].segment = pack_i;
}
}
}
int c, i, j;
unsigned char buffer[8];
- for (i=fSegment; i<nSegment; i++) {
+ for (i = fSegment; i < nSegment; i++) {
if (Segment[i].used) continue;
- if (Segment[i].ascii!=-1) continue;
- for (c=0; c<CHARS-ICONS; c++) {
- for (j=fSegment; j<nSegment; j++) {
- if (Segment[j].ascii==c) break;
+ if (Segment[i].ascii != -1) continue;
+ for (c = 0; c < CHARS - ICONS; c++) {
+ for (j = fSegment; j < nSegment; j++) {
+ if (Segment[j].ascii == c) break;
}
- if (j==nSegment) break;
+ if (j == nSegment) break;
}
- Segment[i].ascii=c;
+ Segment[i].ascii = c;
switch (Segment[i].dir) {
case DIR_WEST:
- for (j=0; j<4; j++) {
- buffer[j ]=(1<<Segment[i].val1)-1;
- buffer[j+4]=(1<<Segment[i].val2)-1;
+ for (j = 0; j < 4; j++) {
+ buffer[j ] = (1<<Segment[i].val1)-1;
+ buffer[j+4] = (1<<Segment[i].val2)-1;
}
break;
case DIR_EAST:
- for (j=0; j<4; j++) {
- buffer[j ]=255<<(XRES-Segment[i].val1);
- buffer[j+4]=255<<(XRES-Segment[i].val2);
+ for (j = 0; j < 4; j++) {
+ buffer[j ] = 255<<(XRES-Segment[i].val1);
+ buffer[j+4] = 255<<(XRES-Segment[i].val2);
}
break;
case DIR_NORTH:
- for (j=0; j<Segment[i].val1; j++) {
- buffer[7-j]=(1<<XRES)-1;
+ for (j = 0; j < Segment[i].val1; j++) {
+ buffer[7-j] = (1<<XRES)-1;
}
- for (; j<YRES; j++) {
- buffer[7-j]=0;
+ for (; j < YRES; j++) {
+ buffer[7-j] = 0;
}
break;
case DIR_SOUTH:
- for (j=0; j<Segment[i].val1; j++) {
- buffer[j]=(1<<XRES)-1;
+ for (j = 0; j < Segment[i].val1; j++) {
+ buffer[j] = (1<<XRES)-1;
}
- for (; j<YRES; j++) {
- buffer[j]=0;
+ for (; j < YRES; j++) {
+ buffer[j] = 0;
}
break;
}
drv_generic_text_real_defchar(CHAR0+c, buffer);
+
+ /* maybe invalidate framebuffer */
+ if (INVALIDATE) {
+ for (j = 0; j < LROWS*LCOLS; j++) {
+ if (BarFB[j].segment == i) {
+ BarFB[j].invalid = 1;
+ }
+ }
+ }
}
}
drv_generic_text_bar_define_chars();
/* reset usage flags */
- for (s=0; s<nSegment; s++) {
- Segment[s].used=0;
+ for (s = 0; s < nSegment; s++) {
+ Segment[s].used = 0;
}
/* set usage flags */
- for (n=0; n<LROWS*LCOLS; n++) {
- if ((s=BarFB[n].segment)!=-1) Segment[s].used=1;
+ for (n = 0; n < LROWS*LCOLS; n++) {
+ if ((s = BarFB[n].segment) != -1) Segment[s].used = 1;
}
/* transfer bars into layout buffer */
- for (n=0; n<LCOLS*LROWS; n++) {
- s=BarFB[n].segment;
- if (s==-1) continue;
- c=Segment[s].ascii;
- if (c==-1) continue;
- if (s>=fSegment) c+=CHAR0; /* ascii offset for user-defineable chars */
- if(c==LayoutFB[n]) continue;
- LayoutFB[n]=c;
+ for (row = 0; row < LROWS; row++) {
+ for (col = 0; col < LCOLS; col++) {
+ n = row*LCOLS+col;
+ s = BarFB[n].segment;
+ if (s == -1) continue;
+ c = Segment[s].ascii;
+ if (c == -1) continue;
+ if (s >= fSegment) c += CHAR0; /* ascii offset for user-defineable chars */
+ LayoutFB[n] = c;
+ /* maybe invalidate display framebuffer */
+ if (BarFB[n].invalid) {
+ BarFB[n].invalid = 0;
+ DisplayFB[row*DCOLS+col] = ~LayoutFB[n];
+ }
+ }
}
/* transfer differences to the display */
- for (row=0; row<DROWS; row++) {
- for (col=0; col<DCOLS; col++) {
+ for (row = 0; row < DROWS; row++) {
+ for (col = 0; col < DCOLS; col++) {
int pos1, pos2, equal;
- if (LayoutFB[row*LCOLS+col]==DisplayFB[row*DCOLS+col]) continue;
+ if (LayoutFB[row*LCOLS+col] == DisplayFB[row*DCOLS+col]) continue;
col0 = col;
- for (pos1=col, pos2=pos1, col++, equal=0; col<DCOLS; col++) {
- if (LayoutFB[row*LCOLS+col]==DisplayFB[row*DCOLS+col]) {
+ for (pos1 = col, pos2 = pos1, col++, equal = 0; col < DCOLS; col++) {
+ if (LayoutFB[row*LCOLS+col] == DisplayFB[row*DCOLS+col]) {
/* If we find just one equal byte, we don't break, because this */
/* would require a goto, which takes several bytes, too. */
- if (++equal>GOTO_COST) break;
+ if (++equal > GOTO_COST) break;
} else {
- pos2=col;
- equal=0;
+ pos2 = col;
+ equal = 0;
}
}
memcpy ( DisplayFB+row*DCOLS+pos1, LayoutFB+row*LCOLS+pos1, pos2-pos1+1);
projects / lcd4linux.git / commitdiff