C++ (Cpp) DocumentView::drawSelection示例

示例#1

文件： VerticalToolHandler.cpp 项目： xournalpp/xournalpp

VerticalToolHandler::VerticalToolHandler(Redrawable* view, PageRef page, double y, double zoom)
{
	XOJ_INIT_TYPE(VerticalToolHandler);

	this->startY = y;
	this->endY = y;
	this->view = view;
	this->page = page;
	this->layer = this->page->getSelectedLayer();
	this->jumpY = 0;

	for (Element* e : *this->layer->getElements())
	{
		if (e->getY() >= y)
		{
			this->elements.push_back(e);
		}
	}

	for (Element* e : this->elements)
	{
		this->layer->removeElement(e, false);

		this->jumpY = MAX(this->jumpY, e->getY() + e->getElementHeight());
	}

	this->jumpY = this->page->getHeight() - this->jumpY;

	this->crBuffer = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
	                                            this->page->getWidth() * zoom, (this->page->getHeight() - y) * zoom);

	cairo_t* cr = cairo_create(this->crBuffer);
	cairo_scale(cr, zoom, zoom);
	cairo_translate(cr, 0, -y);
	DocumentView v;
	v.drawSelection(cr, this);

	cairo_destroy(cr);

	view->rerenderPage();
}

示例#2

文件： VerticalToolHandler.cpp 项目： wbrenna/xournalpp

VerticalToolHandler::VerticalToolHandler(Redrawable * view, PageRef page, double y, double zoom) {
	XOJ_INIT_TYPE(VerticalToolHandler);

	this->startY = y;
	this->endY = y;
	this->view = view;
	this->page = page;
	this->layer = this->page.getSelectedLayer();
	this->elements = NULL;
	this->jumpY = 0;

	ListIterator<Element *> it = this->layer->elementIterator();
	while (it.hasNext()) {
		Element * e = it.next();
		if (e->getY() >= y) {
			this->elements = g_list_append(this->elements, e);
		}
	}

	for (GList * l = this->elements; l != NULL; l = l->next) {
		Element * e = (Element *) l->data;
		this->layer->removeElement(e, false);

		this->jumpY = MAX(this->jumpY, e->getY() + e->getElementHeight());
	}

	this->jumpY = this->page.getHeight() - this->jumpY;

	this->crBuffer = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, this->page.getWidth() * zoom, (this->page.getHeight() - y) * zoom);
	cairo_t * cr = cairo_create(this->crBuffer);
	cairo_scale(cr, zoom, zoom);
	cairo_translate(cr, 0, -y);
	DocumentView v;
	v.drawSelection(cr, this);

	cairo_destroy(cr);

	view->rerenderPage();
}