SEXP do_col2RGB(SEXP call, SEXP op, SEXP args, SEXP env)
{
/* colorname, "#rrggbb" or "col.number" to (r,g,b) conversion */
SEXP colors, ans, names, dmns;
unsigned int col;
int n, i, i4;
checkArity(op, args);
PROTECT(colors = coerceVector(CAR(args),STRSXP));
n = LENGTH(colors);
PROTECT(ans = allocMatrix(INTSXP, 4, n));
PROTECT(dmns = allocVector(VECSXP, 2));
PROTECT(names = allocVector(STRSXP, 4));
SET_STRING_ELT(names, 0, mkChar("red"));
SET_STRING_ELT(names, 1, mkChar("green"));
SET_STRING_ELT(names, 2, mkChar("blue"));
SET_STRING_ELT(names, 3, mkChar("alpha"));
SET_VECTOR_ELT(dmns, 0, names);
UNPROTECT(1);/*names*/
if ((names = getAttrib(colors, R_NamesSymbol)) != R_NilValue)
SET_VECTOR_ELT(dmns, 1, names);
setAttrib(ans, R_DimNamesSymbol, dmns);
for(i = i4 = 0; i < n; i++, i4 += 4) {
col = str2col(CHAR(STRING_ELT(colors, i)));
INTEGER(ans)[i4 +0] = R_RED(col);
INTEGER(ans)[i4 +1] = R_GREEN(col);
INTEGER(ans)[i4 +2] = R_BLUE(col);
INTEGER(ans)[i4 +3] = R_ALPHA(col);
}
UNPROTECT(3);
return ans;
}
static void SWF_SetLineStyle(SWFShape shape, const pGEcontext plotParams,
swfDevDesc *swfInfo ){
byte red = R_RED(plotParams->col);
byte green = R_GREEN(plotParams->col);
byte blue = R_BLUE(plotParams->col);
byte alpha = R_ALPHA(plotParams->col);
if( swfInfo->debug == TRUE ){
fprintf(swfInfo->logFile,"\tLineStyle: Red=%d, ",red);
fprintf(swfInfo->logFile,"Green=%d, ",green);
fprintf(swfInfo->logFile,"Blue=%d, ",blue);
fprintf(swfInfo->logFile,"Alpha=%d\n",alpha);
fflush(swfInfo->logFile);
}
//FIXME: Honor all the line parameters such as
//lty, lend, ljoin
SWFShape_setLine(shape,
(unsigned short) plotParams->lwd,
red, green, blue, alpha);
/* does not play nicely with setRightFill
SWFShape_setLine2Filled(shape,
(unsigned short) plotParams->lwd,
newSWFSolidFillStyle( red, green, blue, alpha ),
SWF_LINESTYLE_CAP_ROUND,
plotParams->lmitre);
*/
}
static Rboolean SWF_Open( pDevDesc deviceInfo ){
/*
* Shortcut pointers to variables of interest.
* It seems like there HAS to be a more elegent way of accesing
* these...
*/
swfDevDesc *swfInfo = (swfDevDesc *) deviceInfo->deviceSpecific;
//Debug log
if( swfInfo->debug == TRUE ){
if( !( swfInfo->logFile =
fopen(R_ExpandFileName(swfInfo->logFileName), "w") ) )
return FALSE;
fprintf(swfInfo->logFile,
"SWF_Open: Begin swf output\n");
fprintf(swfInfo->logFile,
"SWF_Open: Setting dimensions %6.1f by %6.1f\n",
deviceInfo->right, deviceInfo->top);
fprintf(swfInfo->logFile,
"SWF_Open: Setting background %3d, %3d, %3d\n",
R_RED(deviceInfo->startfill),
R_GREEN(deviceInfo->startfill),
R_BLUE(deviceInfo->startfill));
fflush(swfInfo->logFile);
//Rprintf("%s",dashTo);
}
// Set the background color for the movie
SWFMovie_setBackground(swfInfo->m,
R_RED(deviceInfo->startfill),
R_GREEN(deviceInfo->startfill),
R_BLUE(deviceInfo->startfill));
SWFMovie_setDimension(swfInfo->m, deviceInfo->right, deviceInfo->top);
// Set the frame rate for the movie
SWFMovie_setRate(swfInfo->m, swfInfo->frameRate);
// Set the total number of frames in the movie to 1
SWFMovie_setNumberOfFrames(swfInfo->m, 1);
return TRUE;
}
/* set the r, g, b, and pixel values of gcol to color */
static void SetColor(wxColour *gcol, int color)
{
int red, green, blue;
red = R_RED(color);
green = R_GREEN(color);
blue = R_BLUE(color);
gcol->Set(red, green, blue);
}
static void Quartz_SetFill(int fill, double gamma, NewDevDesc *dd)
{
QuartzDesc *xd = (QuartzDesc*)dd->deviceSpecific;
xd->fill = fill;
CGContextSetRGBFillColor( GetContext(xd),
(float)R_RED(fill)/255.0,
(float)R_GREEN(fill)/255.0,
(float)R_BLUE(fill)/255.0,
(float)R_ALPHA(fill)/255.0);
}
static void Quartz_SetStroke(int color, double gamma, NewDevDesc *dd)
{
QuartzDesc *xd = (QuartzDesc*)dd->deviceSpecific;
xd->color = color;
CGContextSetRGBStrokeColor( GetContext(xd),
(float)R_RED(color)/255.0,
(float)R_GREEN(color)/255.0,
(float)R_BLUE(color)/255.0,
(float)R_ALPHA(color)/255.0);
}
/* R uses gc->col for text color, but actually we need to "fill" the outlines */
void swfSetTextColor(SWFShape shape, const pGEcontext gc, pswfDesc swfInfo)
{
SWFFillStyle fill;
fill = newSWFSolidFillStyle(R_RED(gc->col),
R_GREEN(gc->col),
R_BLUE(gc->col),
R_ALPHA(gc->col));
SWFShape_setRightFillStyle(shape, fill);
SWFArray_append(swfInfo->array, (SWFObject) fill);
}
void write_attr_col(FILE* f, const char* attr, unsigned int col) {
int alpha = R_ALPHA(col);
if (col == NA_INTEGER || alpha == 0) {
fprintf(f, " %s='none'", attr);
return;
} else {
fprintf(f, " %s='#%02X%02X%02X'", attr, R_RED(col), R_GREEN(col), R_BLUE(col));
if (alpha != 255)
fprintf(f, " %s-opacity='%0.2f'", attr, alpha / 255.0);
}
}
/* set the r, g, b, and pixel values of gcol to color */
static void SetColor(GdkColor *gcol, int color)
{
int red, green, blue;
red = R_RED(color);
green = R_GREEN(color);
blue = R_BLUE(color);
gcol->red = 0;
gcol->green = 0;
gcol->blue = 0;
gcol->pixel = gdk_rgb_xpixel_from_rgb((red << 16)|(green << 8)|(blue));
}
/*
* device_Text should have the side-effect that the
* given text is drawn at the given location.
* The text should be rotated according to rot (degrees)
*
* R_GE_gcontext parameters that should be honoured (if possible):
* font, cex, ps, col, gamma
*/
static void SWF_Text( double x, double y, const char *str,
double rot, double hadj, const pGEcontext plotParams,
pDevDesc deviceInfo)
{
/* Shortcut pointers to variables of interest. */
swfDevDesc *swfInfo = (swfDevDesc *) deviceInfo->deviceSpecific;
if( swfInfo->debug == TRUE ){
fprintf(swfInfo->logFile,
"SWF_Text: Writing Text \"%s\"\n", str);
fflush(swfInfo->logFile);
}
/* It is possible that this will be very expensive and storing
* a single text object in swfInfo may be better.
*/
SWFText text_object = newSWFText();
SWFDisplayItem text_display;
/*Ming (0,0) is the top left, convert to R (0,0) at bottom left*/
y = deviceInfo->top - y;
//found = !strcmp(name, fontlist->family->fxname);
// Tell the text object to use the font previously loaded
SWFText_setFont(text_object,
selectFont(plotParams->fontface, plotParams->fontfamily, swfInfo));
// Set the height of the text
SWFText_setHeight(text_object, plotParams->ps * plotParams->cex);
// Set the color of the text
byte red = R_RED(plotParams->col);
byte green = R_GREEN(plotParams->col);
byte blue = R_BLUE(plotParams->col);
byte alpha = R_ALPHA(plotParams->col);
SWFText_setColor(text_object, red, green, blue, alpha);
// Add a string to the text object
SWFText_addString(text_object, str, NULL);
// Add the text object to the movie (at 0,0)
text_display = SWFMovie_add(swfInfo->m, (SWFBlock) text_object);
addToDisplayList( text_display );
// Move to correct coordinate and rotate
SWFDisplayItem_moveTo(text_display, x, y);
SWFDisplayItem_rotate(text_display, rot);
}
static void SWF_SetFill(SWFShape shape, const pGEcontext plotParams,
swfDevDesc *swfInfo ){
/*
* Some Notes on Color
*
* R uses a 24-bit color model. Colors are specified in 32-bit
* integers which are partitioned into 4 bytes as follows.
*
* <-- most sig least sig -->
* +-------------------------------+
* | 0 | blue | green | red |
* +-------------------------------+
*
* The red, green and blue bytes can be extracted as follows.
*
* red = ((color ) & 255)
* green = ((color >> 8) & 255)
* blue = ((color >> 16) & 255)
*/
byte red = R_RED(plotParams->fill);
byte green = R_GREEN(plotParams->fill);
byte blue = R_BLUE(plotParams->fill);
//Top 8 bits: 255 = opaque, 0 = transparent
byte alpha = R_ALPHA(plotParams->fill);
if( swfInfo->debug == TRUE ){
fprintf(swfInfo->logFile,"\tFill: Red=%d, ",red);
fprintf(swfInfo->logFile,"Green=%d, ",green);
fprintf(swfInfo->logFile,"Blue=%d, ",blue);
fprintf(swfInfo->logFile,"Alpha=%d\n",alpha);
fflush(swfInfo->logFile);
}
SWFFillStyle fill_style;
fill_style = newSWFSolidFillStyle( red, green, blue, alpha );
if(fill_style == NULL)
error("Failed to allocate memory for fill object!");
SWFShape_setRightFillStyle(shape, fill_style);
}
/**********************************
* Below are supporting functions *
**********************************/
void swfSetLineStyle(SWFShape shape, const pGEcontext gc, pswfDesc swfInfo)
{
int cap = SWF_LINESTYLE_CAP_ROUND;
int endcap = SWF_LINESTYLE_FLAG_ENDCAP_ROUND;
int join = SWF_LINESTYLE_JOIN_ROUND;
switch(gc->lend)
{
case GE_ROUND_CAP:
cap = SWF_LINESTYLE_CAP_ROUND;
endcap = SWF_LINESTYLE_FLAG_ENDCAP_ROUND;
break;
case GE_BUTT_CAP:
cap = SWF_LINESTYLE_CAP_NONE;
endcap = SWF_LINESTYLE_FLAG_ENDCAP_NONE;
break;
case GE_SQUARE_CAP:
cap = SWF_LINESTYLE_CAP_SQUARE;
endcap = SWF_LINESTYLE_FLAG_ENDCAP_SQUARE;
break;
}
switch(gc->ljoin)
{
case GE_ROUND_JOIN:
join = SWF_LINESTYLE_JOIN_ROUND;
break;
case GE_MITRE_JOIN:
join = SWF_LINESTYLE_JOIN_MITER;
break;
case GE_BEVEL_JOIN:
join = SWF_LINESTYLE_JOIN_BEVEL;
break;
}
SWFShape_setLine2(shape, (unsigned short) gc->lwd,
R_RED(gc->col),
R_GREEN(gc->col),
R_BLUE(gc->col),
R_ALPHA(gc->col),
cap | endcap | join,
(float) gc->lmitre);
}
SEXP attribute_hidden do_col2RGB(SEXP call, SEXP op, SEXP args, SEXP env)
{
/* colorname, "#rrggbb" or "col.number" to (r,g,b) conversion */
SEXP colors, ans, names, dmns;
double col, bg;
unsigned int icol;
int n, i, i4;
checkArity(op, args);
colors = CAR(args);
if(isString(colors)) PROTECT(colors);
else {
PROTECT(colors = coerceVector(colors, INTSXP));
if (TYPEOF(colors) != INTSXP)
error(_("invalid '%s' value"), "col");
}
n = LENGTH(colors);
/* First set up the output matrix */
PROTECT(ans = allocMatrix(INTSXP, 4, n));
PROTECT(dmns = allocVector(VECSXP, 2));
PROTECT(names = allocVector(STRSXP, 4));
SET_STRING_ELT(names, 0, mkChar("red"));
SET_STRING_ELT(names, 1, mkChar("green"));
SET_STRING_ELT(names, 2, mkChar("blue"));
SET_STRING_ELT(names, 3, mkChar("alpha"));
SET_VECTOR_ELT(dmns, 0, names);
UNPROTECT(1); /*names*/
if ((names = getAttrib(colors, R_NamesSymbol)) != R_NilValue)
SET_VECTOR_ELT(dmns, 1, names);
setAttrib(ans, R_DimNamesSymbol, dmns);
/* avoid looking up the background unless we will need it;
this may avoid opening a new window. Unfortunately, there is no
unavailable colour, so we work with doubles and convert at the
last minute */
#define BG_NEEDED -1.0
bg = BG_NEEDED;
if(isString(colors)) {
for(i = i4 = 0; i < n; i++, i4 += 4) {
col = str2col(CHAR(STRING_ELT(colors, i)), bg);
if (col == BG_NEEDED)
col = bg = dpptr(GEcurrentDevice())->bg;
icol = (unsigned int)col;
INTEGER(ans)[i4 +0] = R_RED(icol);
INTEGER(ans)[i4 +1] = R_GREEN(icol);
INTEGER(ans)[i4 +2] = R_BLUE(icol);
INTEGER(ans)[i4 +3] = R_ALPHA(icol);
}
} else {
for(i = i4 = 0; i < n; i++, i4 += 4) {
col = INTEGER(colors)[i];
if (col == NA_INTEGER) col = R_TRANWHITE;
else if (col == 0) col = bg;
else col = R_ColorTable[(unsigned int)(col-1) % R_ColorTableSize];
if (col == BG_NEEDED)
col = bg = dpptr(GEcurrentDevice())->bg;
icol = (unsigned int)col;
INTEGER(ans)[i4 +0] = R_RED(icol);
INTEGER(ans)[i4 +1] = R_GREEN(icol);
INTEGER(ans)[i4 +2] = R_BLUE(icol);
INTEGER(ans)[i4 +3] = R_ALPHA(icol);
}
}
UNPROTECT(3);
return ans;
}
