int l;
va_list arglist;
va_start(arglist, format);
- vsprintf(buf, format, arglist);
+ vsnprintf(buf, sizeof(buf)-1, format, arglist);
va_end(arglist);
l = strlen(buf);
while(l && buf[l-1]=='\n') {
i->origwidth = width;
i->origheight = height;
- if(i->targetwidth && i->targetheight) {
+ if(i->targetwidth || i->targetheight) {
+ int targetwidth = i->targetwidth;
+ if(!targetwidth)
+ targetwidth = width*i->targetheight/height;
+ int targetheight = i->targetheight;
+ if(!targetheight)
+ targetheight = height*i->targetwidth/width;
if(i->keepratio) {
- double rx = (double)i->targetwidth / (double)width;
- double ry = (double)i->targetheight / (double)height;
+ double rx = (double)targetwidth / (double)width;
+ double ry = (double)targetheight / (double)height;
if(rx<ry) {
i->matrix.m00 = rx;
i->matrix.m11 = rx;
i->matrix.tx = 0;
if(i->centery) {
- i->matrix.ty = (i->targetheight - height*rx) / 2;
+ i->matrix.ty = (targetheight - height*rx) / 2;
}
} else {
i->matrix.m00 = ry;
i->matrix.m11 = ry;
if(i->centerx) {
- i->matrix.tx = (i->targetwidth - width*ry) / 2;
+ i->matrix.tx = (targetwidth - width*ry) / 2;
}
i->matrix.ty = 0;
}
} else {
- i->matrix.m00 = (double)i->targetwidth / (double)width;
- i->matrix.m11 = (double)i->targetheight / (double)height;
+ i->matrix.m00 = (double)targetwidth / (double)width;
+ i->matrix.m11 = (double)targetheight / (double)height;
}
i->zoomwidth = sqrt(i->matrix.m00*i->matrix.m11);
- i->out->startpage(i->out,i->targetwidth,i->targetheight);
+ i->out->startpage(i->out,targetwidth,targetheight);
} else {
i->out->startpage(i->out,(int)(width*i->matrix.m00),(int)(height*i->matrix.m11));
}
}
i->out = out;
}
+
+gfxdevice_t* gfxdevice_rescale_new(gfxdevice_t*out, int width, int height, double scale)
+{
+ gfxdevice_t* d = (gfxdevice_t*)malloc(sizeof(gfxdevice_t));
+ gfxdevice_rescale_init(d, out, width, height, scale);
+ return d;
+}