ps_image* PICAPI ps_image_create_from_image(ps_image* i, const ps_rect* r)
{
if (!picasso::is_valid_system_device()) {
global_status = STATUS_DEVICE_ERROR;
return NULL;
}
if (!i) {
global_status = STATUS_INVALID_ARGUMENT;
return NULL;
}
ps_rect rc = {0, 0, (float)i->buffer.width(), (float)i->buffer.height()};
if (!r) {
//Note: if rect is NULL, It equal reference.
global_status = STATUS_SUCCEED;
return ps_image_ref(i);
} else {
if (r->x > 0) {
rc.x = r->x;
}
if (r->y > 0) {
rc.y = r->y;
}
if (r->w > 0) {
rc.w = r->w;
}
if (r->h > 0) {
rc.h = r->h;
}
}
ps_image* img = (ps_image*)mem_malloc(sizeof(ps_image));
if (img) {
img->refcount = 1;
img->fmt = i->fmt;
img->flage = buffer_alloc_image;
img->host = (void*)ps_image_ref(i);
int bpp = picasso::_bytes_per_color(i->fmt);
new ((void*)&(img->buffer)) picasso::rendering_buffer;
img->buffer.attach(i->buffer.buffer()+_iround(rc.y*i->buffer.stride()+rc.x*bpp),
_iround(rc.w), _iround(rc.h), i->buffer.stride());
img->buffer.set_transparent(i->buffer.is_transparent());
img->buffer.set_color_channel(i->buffer.get_color_channel());
global_status = STATUS_SUCCEED;
return img;
} else {
global_status = STATUS_OUT_OF_MEMORY;
return NULL;
}
}
void dini_context (ps_context* gc)
{
ps_image_ref(pi);
ps_matrix_unref(pm);
ps_matrix_unref(pn);
ps_pattern_unref(pt);
ps_path_unref(pa);
ps_gradient_unref(gr);
}
ps_canvas* PICAPI ps_canvas_create_from_image(ps_image* i, const ps_rect* r)
{
if (!picasso::is_valid_system_device()) {
global_status = STATUS_DEVICE_ERROR;
return NULL;
}
if (!i) {
global_status = STATUS_INVALID_ARGUMENT;
return NULL;
}
ps_rect rc = {0, 0, (float)i->buffer.width(), (float)i->buffer.height()};
if (r) {
if (r->x > 0) {
rc.x = r->x;
}
if (r->y > 0) {
rc.y = r->y;
}
if (r->w > 0) {
rc.w = r->w;
}
if (r->h > 0) {
rc.h = r->h;
}
}
picasso::painter* pa = picasso::get_painter_from_format(i->fmt);
if (!pa){
return NULL;
}
ps_canvas* p = (ps_canvas*)mem_malloc(sizeof(ps_canvas));
if (p) {
p->refcount = 1;
p->fmt = i->fmt;
p->p = pa;
p->flage = buffer_alloc_image;
p->host = (void*)ps_image_ref(i);
p->mask = NULL;
int bpp = picasso::_bytes_per_color(i->fmt);
new ((void*)&(p->buffer)) picasso::rendering_buffer;
p->buffer.attach(i->buffer.buffer()+_iround(rc.y*i->buffer.stride()+rc.x*bpp),
_iround(rc.w), _iround(rc.h), i->buffer.stride());
p->p->attach(p->buffer);
global_status = STATUS_SUCCEED;
return p;
} else {
delete pa; //mem_free painter on error
global_status = STATUS_OUT_OF_MEMORY;
return NULL;
}
}
