/*

    ......... 2015 Ivan Mahonin

    This program is free software: you can redistribute it and/or modify

    it under the terms of the GNU General Public License as published by

    the Free Software Foundation, either version 3 of the License, or

    (at your option) any later version.

    This program is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License

    along with this program.  If not, see <http://www.gnu.org/licenses/>.

*/

#include <iostream>

#include <iomanip>

#include "measure.h"

#include "utils.h"

#include "glcontext.h"

using namespace std;

std::vector<Measure*> Measure::stack;

Measure::Measure(const std::string &filename):

	filename(filename),

	surface(),

	tga(filename.size() > 4 && filename.substr(filename.size()-4, 4) == ".tga"),

	sub_tasks(),

	t()

{

	cout << string(stack.size()*2, ' ') << "begin             " << filename << endl << flush;

	stack.push_back(this);

	t = clock();

}

Measure::Measure(const std::string &filename, Surface &surface):

	filename(filename),

	surface(&surface),

	tga(filename.size() > 4 && filename.substr(filename.size()-4, 4) == ".tga"),

	sub_tasks(),

	t()

{

	cout << string(stack.size()*2, ' ') << "begin             " << filename << endl << flush;

	stack.push_back(this);

	t = clock();

}

Measure::~Measure() {

	if (!surface && tga) glFinish();

	clock_t dt = sub_tasks ? sub_tasks : clock() - t;

	Real ms = 1000.0*(Real)dt/(Real)(CLOCKS_PER_SEC);

	cout << string((stack.size()-1)*2, ' ') << "end "

		 << setw(8) << fixed << setprecision(3)

		 << ms << " ms - "

		 << filename

		 << endl << flush;

	if (tga) {

		if (surface)

			Utils::save_surface(*surface, filename);

		else

			Utils::save_viewport(filename);

	}

	if (surface) {

		surface->clear();

	} else {

		glClear(GL_COLOR_BUFFER_BIT);

		glFinish();

	}

	stack.pop_back();

	if (!stack.empty()) stack.back()->sub_tasks += dt;

}