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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* paintertest.cc
*
* Fri Nov 29 18:08:57 CET 2013
* Copyright 2013 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* DrumGizmo 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "dgunit.h"
#include "../plugingui/canvas.h"
#include "../plugingui/painter.h"
#include "../plugingui/image.h"
#include "../plugingui/font.h"
class TestableCanvas
: public GUI::Canvas
{
public:
TestableCanvas(std::size_t width, std::size_t height)
: pixbuf(width, height)
{}
GUI::PixelBufferAlpha& getPixelBuffer() override
{
return pixbuf;
}
private:
GUI::PixelBufferAlpha pixbuf;
};
class PainterTest
: public DGUnit
{
public:
PainterTest()
{
DGUNIT_TEST(PainterTest::testDrawImage);
DGUNIT_TEST(PainterTest::testDrawText);
}
void testDrawImage()
{
// Success criterion is simply to not assert in the drawing routines...
GUI::Image image(":resources/logo.png");
{ // Image fits in pixelbuffer
TestableCanvas canvas(image.width(), image.height());
GUI::Painter painter(canvas);
painter.drawImage(0, 0, image);
}
{ // Image fits in pixelbuffer, negative offset
TestableCanvas canvas(image.width(), image.height());
GUI::Painter painter(canvas);
painter.drawImage(-10, -10, image);
}
{ // Image too big for pixelbuffer
TestableCanvas canvas(image.width() / 2, image.height() / 2);
GUI::Painter painter(canvas);
painter.drawImage(0, 0, image);
}
{ // Image fits in pixelbuffer but offset so it is drawn over the edge.
TestableCanvas canvas(image.width(), image.height());
GUI::Painter painter(canvas);
painter.drawImage(10, 10, image);
}
{ // Image is offset to the right and down so nothing is to be drawn.
TestableCanvas canvas(image.width(), image.height());
GUI::Painter painter(canvas);
painter.drawImage(image.width() + 1,
image.height() + 1,
image);
}
{ // Image is offset to the left and up so nothing is to be drawn.
TestableCanvas canvas(image.width(), image.height());
GUI::Painter painter(canvas);
painter.drawImage(-1 * (image.width() + 1),
-1 * (image.height() + 1),
image);
}
}
void testDrawText()
{
// Success criterion is simply to not assert in the drawing routines...
GUI::Font font;
// a string with unicode characters
std::string someText = "Hello World - лæ Библиотека";
std::size_t width = font.textWidth(someText);
std::size_t height = font.textHeight(someText);
{ // Text fits in pixelbuffer
TestableCanvas canvas(width, height);
GUI::Painter painter(canvas);
painter.drawText(0, 0, font, someText);
}
{ // Text fits in pixelbuffer, negative offset
TestableCanvas canvas(width, height);
GUI::Painter painter(canvas);
painter.drawText(-10, -10, font, someText);
}
{ // Text too big for pixelbuffer
TestableCanvas canvas(width / 2, height / 2);
GUI::Painter painter(canvas);
painter.drawText(0, 0, font, someText);
}
{ // Text fits in pixelbuffer but offset so it is drawn over the edge.
TestableCanvas canvas(width, height);
GUI::Painter painter(canvas);
painter.drawText(10, 10, font, someText);
}
{ // Text is offset to the right and down so nothing is to be drawn.
TestableCanvas canvas(width, height);
GUI::Painter painter(canvas);
painter.drawText(width + 1,
height + 1,
font, someText);
}
{ // Text is offset to the left and up so nothing is to be drawn.
TestableCanvas canvas(width, height);
GUI::Painter painter(canvas);
painter.drawText(-1 * (width + 1),
-1 * (height + 1),
font, someText);
}
}
};
// Registers the fixture into the 'registry'
static PainterTest test;
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