#include "XcbLayerInterface.h"
#include "XcbTextInterface.h"
#include "RectangleElement.h"
#include <memory>

uint32_t XcbLayerInterface::GetColor(ColorPtr color)
{
	return XcbLayerInterface::GetColor(color->GetR(),
			color->GetG(), color->GetB());
}

uint32_t XcbLayerInterface::GetColor(int r, int g, int b)
{
	return b + (g<<8) + (r<<16);
}

void XcbLayerInterface::ModifyGcColor(xcb_connection_t* connection, xcb_gcontext_t gc,
		ColorPtr color)
{
	uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_GRAPHICS_EXPOSURES;
	uint32_t values[2] = {XcbLayerInterface::GetColor(color), 0};

	xcb_change_gc(connection, gc, mask, values);
}

void XcbLayerInterface::AddLayer(xcb_connection_t* connection,
		xcb_screen_t* screen, xcb_window_t window, xcb_gcontext_t gc,
		VisualLayerPtr layer)
{
	if(layer->HasText())
	{
		XcbTextInterface::AddTextElement(connection, screen, window, layer->GetText());
	}
	else if(layer->HasShape())
	{
		auto shape = layer->GetShape();
		if(shape->GetType() == GeometryElement::Type::Rectangle)
		{
			auto rectangle = std::dynamic_pointer_cast<RectangleElement>(shape);
			Pixel loc = rectangle->GetLocation();
			auto width = static_cast<uint16_t>(rectangle->GetWidth());
			auto height = static_cast<uint16_t>(rectangle->GetHeight());
			xcb_rectangle_t rectangles[] = { { static_cast<int16_t>(loc.GetX()),
					static_cast<int16_t>(loc.GetY()), width, height} };
			XcbLayerInterface::ModifyGcColor(connection, gc, rectangle->GetFillColor());
			xcb_poly_fill_rectangle(connection, window, gc, 1, rectangles);
		}
	}
}