/*--------------------------------------------------------------------------
* void common_init( PLStream *pls )
*
* Basic initialization for all devices.
*--------------------------------------------------------------------------*/
wxPLDevBase* common_init( PLStream *pls )
{
// Log_Verbose( "common_init()" );
wxPLDevBase* dev;
/* default options */
static PLINT freetype=-1;
static PLINT smooth_text=1;
static PLINT text=-1;
static PLINT hrshsym = 0;
/* default backend uses wxGraphicsContext, if not available
the agg library will be used, if not available the basic
backend will be used. */
static PLINT backend=wxBACKEND_DC;
#if wxUSE_GRAPHICS_CONTEXT
backend=wxBACKEND_GC;
#else
#ifdef HAVE_AGG
backend=wxBACKEND_AGG;
#endif
#endif
DrvOpt wx_options[] = {
#ifdef HAVE_FREETYPE
{"freetype", DRV_INT, &freetype, "Use FreeType library"},
{"smooth", DRV_INT, &smooth_text, "Turn text smoothing on (1) or off (0)"},
#endif
{"hrshsym", DRV_INT, &hrshsym, "Use Hershey symbol set (hrshsym=0|1)"},
{"backend", DRV_INT, &backend, "Choose backend: (0) standard, (1) using AGG library, (2) using wxGraphicsContext"},
{"text", DRV_INT, &text, "Use own text routines (text=0|1)"},
{NULL, DRV_INT, NULL, NULL}
};
/* Check for and set up driver options */
plParseDrvOpts( wx_options );
/* allocate memory for the device storage */
switch( backend )
{
case wxBACKEND_GC:
/* in case wxGraphicsContext isn't available, the next backend (agg
if available) in this list will be used */
#if wxUSE_GRAPHICS_CONTEXT
dev = new wxPLDevGC;
/* by default the own text routines are used for wxGC */
if(text==-1)
text=1;
freetype = 0; /* this backend is vector oriented and doesn't know pixels */
break;
#endif
case wxBACKEND_AGG:
/* in case the agg library isn't available, the standard backend
will be used */
#ifdef HAVE_AGG
dev = new wxPLDevAGG;
/* by default the freetype text routines are used for wxAGG */
text = 0; /* text processing doesn't work yet for the AGG backend */
if(freetype==-1)
freetype=1;
break;
#endif
default:
dev = new wxPLDevDC;
/* by default the own text routines are used for wxDC */
if(text==-1)
if(freetype!=1)
text=1;
else
text=0;
if(freetype==-1)
freetype=0;
break;
}
if( dev == NULL) {
plexit( "Insufficient memory" );
}
pls->dev = (void*)dev;
/* be verbose and write out debug messages */
#ifdef _DEBUG
pls->verbose = 1;
pls->debug = 1;
#else
pls->verbose = 0;
pls->debug = 0;
#endif
pls->color = 1; /* Is a color device */
pls->dev_fill0 = 1; /* Can handle solid fills */
pls->dev_fill1 = 0; /* Can't handle pattern fills */
pls->dev_dash = 0;
pls->dev_clear = 1; /* driver supports clear */
if( text ) {
pls->dev_text = 1; /* want to draw text */
pls->dev_unicode = 1; /* want unicode */
if( hrshsym )
pls->dev_hrshsym = 1;
}
#ifdef HAVE_FREETYPE
/* own text routines have higher priority over freetype
if text and freetype option are set to 1 */
if( !text) {
dev->smooth_text=smooth_text;
dev->freetype=freetype;
}
if( dev->freetype ) {
pls->dev_text = 1; /* want to draw text */
pls->dev_unicode = 1; /* want unicode */
if( hrshsym )
pls->dev_hrshsym = 1;
init_freetype_lv1( pls );
FT_Data* FT=(FT_Data *)pls->FT;
FT->want_smooth_text=smooth_text;
}
#endif
/* initialize frame size and position */
if( pls->xlength <= 0 || pls->ylength <=0 )
plspage( 0.0, 0.0, (PLINT)(CANVAS_WIDTH*DEVICE_PIXELS_PER_IN),
(PLINT)(CANVAS_HEIGHT*DEVICE_PIXELS_PER_IN), 0, 0 );
dev->width=pls->xlength;
dev->height=pls->ylength;
dev->clipminx=pls->xlength;
dev->clipminy=pls->ylength;
if( pls->xoffset!=0 || pls->yoffset!=0) {
dev->xpos = (int)(pls->xoffset);
dev->ypos = (int)(pls->yoffset);
}
/* If portrait mode, apply a rotation and set freeaspect */
if( pls->portrait ) {
plsdiori( (PLFLT)(4 - ORIENTATION) );
pls->freeaspect = 1;
}
/* Set the number of pixels per mm */
plP_setpxl( (PLFLT)VIRTUAL_PIXELS_PER_MM, (PLFLT)VIRTUAL_PIXELS_PER_MM );
/* Set up physical limits of plotting device (in drawing units) */
plP_setphy( (PLINT)0, (PLINT)(CANVAS_WIDTH*VIRTUAL_PIXELS_PER_IN),
(PLINT)0, (PLINT)(CANVAS_HEIGHT*VIRTUAL_PIXELS_PER_IN) );
/* get physical device limits coordinates */
plP_gphy( &dev->xmin, &dev->xmax, &dev->ymin, &dev->ymax );
/* setting scale factors */
dev->scalex=(PLFLT)(dev->xmax-dev->xmin)/(dev->width);
dev->scaley=(PLFLT)(dev->ymax-dev->ymin)/(dev->height);
/* set dpi */
plspage(VIRTUAL_PIXELS_PER_IN/dev->scalex, VIRTUAL_PIXELS_PER_IN/dev->scaley, 0, 0, 0, 0);
#ifdef HAVE_FREETYPE
if( dev->freetype )
init_freetype_lv2( pls );
#endif
/* find out what file drivers are available */
plgFileDevs( &dev->devDesc, &dev->devName, &dev->ndev );
return dev;
}
void plD_init_gif(PLStream *pls)
{
png_Dev *dev=NULL;
pls->termin = 0; /* Not an interactive device */
pls->icol0 = 1;
pls->bytecnt = 0;
pls->page = 0;
pls->dev_fill0 = 1; /* Can do solid fills */
pls->family = 1; /* pmr: allow multiple pages. */
if (!pls->colorset)
pls->color = 1; /* Is a color device */
/* Initialize family file info */
plFamInit(pls);
/* Prompt for a file name if not already set */
plOpenFile(pls);
/* Allocate and initialize device-specific data */
plD_init_gif_Dev(pls);
dev=(png_Dev *)pls->dev;
if (pls->xlength <= 0 || pls->ylength <=0)
{
/* use default width, height of 800x600 if not specifed by -geometry option
* or plspage */
plspage(0., 0., 800, 600, 0, 0);
}
pls->graphx = GRAPHICS_MODE;
dev->pngx = pls->xlength - 1; /* should I use -1 or not??? */
dev->pngy = pls->ylength - 1;
#ifdef use_experimental_hidden_line_hack
if (dev->pngx>dev->pngy) /* Work out the scaling factor for the */
{ /* "virtual" (oversized) page */
dev->scale=PIXELS_X/dev->pngx;
}
else
{
dev->scale=PIXELS_Y/dev->pngy;
}
#else
dev->scale=1;
#endif
if (pls->xdpi<=0)
{
/* This corresponds to a typical monitor resolution of 4 pixels/mm. */
plspage(4.*25.4, 4.*25.4, 0, 0, 0, 0);
}
else
{
pls->ydpi=pls->xdpi; /* Set X and Y dpi's to the same value */
}
/* Convert DPI to pixels/mm */
plP_setpxl(dev->scale*pls->xdpi/25.4,dev->scale*pls->ydpi/25.4);
plP_setphy(0, dev->scale*dev->pngx, 0, dev->scale*dev->pngy);
#ifdef HAVE_FREETYPE
if (pls->dev_text)
{
init_freetype_lv2(pls);
}
#endif
}
