void Thing::RestoreContext(Cairo::RefPtr<Cairo::Context> myCr) const
{
	myCr->rotate_degrees(-orientationAngle);
	myCr->translate(-position[0], -position[1]);
    myCr->scale(1/scalingFactor, 1/scalingFactor);
}
Beispiel #2
0
void ImageDrawable::drawImage(const Cairo::RefPtr<Cairo::Context> &cr, const Gtk::Allocation &allocation) {
	auto image = images->current();
	auto surface = image->getPrimary();
	int rwidth, rheight;
	double rscale;
	double rx, ry;

	//cout << "image " << iwidth << "x" << iheight << " " << iorientation.first << "," << iorientation.second << endl;

	calcRenderedImage(image, allocation, rwidth, rheight, rscale, rx, ry);

	cr->translate(rx, ry);
	cr->scale(rscale, rscale);

	waiting = !surface;

	if (image->isPrimaryFailed()) {
		// TODO display fancy failed indicator
		cr->set_source_rgb(0.75, 0.5, 0.5);
		cr->rectangle(0, 0, rwidth, rheight);
		cr->clip();
		cr->paint();
		return;
	} else if (!surface) {
		// TODO display fancy loading animation
		cr->set_source_rgb(0.5, 0.75, 0.5);
		cr->rectangle(0, 0, rwidth, rheight);
		cr->clip();
		cr->paint();
		return;
	}

	switch (image->getOrientation().first) {
	case Image::Rotate::ROTATE_NONE:
		break;

	case Image::Rotate::ROTATE_90:
		cr->translate(image->height(), 0);
		cr->rotate_degrees(90);
		break;

	case Image::Rotate::ROTATE_180:
		cr->translate(image->width(), image->height());
		cr->rotate_degrees(180);
		break;

	case Image::Rotate::ROTATE_270:
		cr->translate(0, image->width());
		cr->rotate_degrees(270);
		break;
	}

	if (image->getOrientation().second) {
		cr->translate(image->width(), 0);
		cr->scale(-1, 1);
	}

	auto pattern = Cairo::SurfacePattern::create(surface);
	pattern->set_filter(Cairo::Filter::FILTER_FAST);
	cr->set_source(pattern);

	//auto start = chrono::steady_clock::now();
	cr->paint();
	//auto stop = chrono::steady_clock::now();
	//cout << "paint " << chrono::duration_cast<chrono::milliseconds>(stop - start).count() << "ms" << endl;

	if (afPoints) {
		//start = chrono::steady_clock::now();
		auto properties = image->getProperties();
		valarray<double> dashes(5.0 / rscale, 5.0 / rscale);

		cr->save();
		cr->set_operator(static_cast<Cairo::Operator>(CAIRO_OPERATOR_DIFFERENCE));

		for (auto &rect : properties.focusPoints) {
			if (properties.focusPointsActive.find(rect) != properties.focusPointsActive.cend()) {
				cr->set_source_rgb(1, 0, 1);
				cr->set_line_width(4.0 / rscale);
				cr->unset_dash();
			} else if (properties.focusPointsSelected.find(rect) != properties.focusPointsSelected.cend()) {
				cr->set_source_rgb(1, 0, 0);
				cr->set_line_width(2.0 / rscale);
				cr->unset_dash();
			} else {
				cr->set_source_rgb(1, 1, 1);
				cr->set_line_width(1.0 / rscale);
				cr->set_dash(dashes, 0);
			}
			cr->rectangle(rect.x, rect.y, rect.width, rect.height);
			cr->stroke();
		}

		cr->restore();

		//stop = chrono::steady_clock::now();
		//cout << "afpaint " << chrono::duration_cast<chrono::milliseconds>(stop - start).count() << "ms" << endl;
	}
}
void Thing::TransformContext(Cairo::RefPtr<Cairo::Context> myCr) const
{
    myCr->scale(scalingFactor, scalingFactor);
	myCr->translate(position[0], position[1]);
	myCr->rotate_degrees(-orientationAngle);
}