Method screenshotModules

src/window/Window.cpp:575–636

void Window::screenshotModules(const std::string& screenshotsDir, float zoom) {
	// Disable preferDarkPanels
	bool preferDarkPanels = settings::preferDarkPanels;
	settings::preferDarkPanels = false;
	DEFER({settings::preferDarkPanels = preferDarkPanels;});

	// Iterate plugins and create directories
	system::createDirectories(screenshotsDir);
	for (plugin::Plugin* p : plugin::plugins) {
		std::string dir = system::join(screenshotsDir, p->slug);
		system::createDirectory(dir);
		for (plugin::Model* model : p->models) {
			std::string filename = system::join(dir, model->slug + ".png");

			// Skip model if screenshot already exists
			if (system::isFile(filename))
				continue;

			INFO("Screenshotting %s %s to %s", p->slug.c_str(), model->slug.c_str(), filename.c_str());

			// Create widgets
			widget::FramebufferWidget* fbw = new widget::FramebufferWidget;
			fbw->oversample = 2;

			struct ModuleWidgetContainer : widget::Widget {
				void draw(const DrawArgs& args) override {
					Widget::draw(args);
					Widget::drawLayer(args, 1);
				}
			};
			ModuleWidgetContainer* mwc = new ModuleWidgetContainer;
			fbw->addChild(mwc);

			app::ModuleWidget* mw = model->createModuleWidget(NULL);
			mwc->box.size = mw->box.size;
			fbw->box.size = mw->box.size;
			mwc->addChild(mw);

			// Step to allow the ModuleWidget state to set its default appearance.
			fbw->step();

			// Draw to framebuffer
			fbw->render(math::Vec(zoom, zoom));

			// Read pixels
			nvgluBindFramebuffer(fbw->getFramebuffer());
			int width, height;
			nvgImageSize(vg, fbw->getImageHandle(), &width, &height);
			uint8_t* pixels = new uint8_t[height * width * 4];
			glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, pixels);

			// Write pixels to PNG
			flipBitmap(pixels, width, height, 4);
			stbi_write_png(filename.c_str(), width, height, 4, pixels, width * 4);

			// Cleanup
			delete[] pixels;
			nvgluBindFramebuffer(NULL);