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Diffstat (limited to 'test')
| -rw-r--r-- | test/paintertest.cc | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/test/paintertest.cc b/test/paintertest.cc new file mode 100644 index 0000000..5c8cf45 --- /dev/null +++ b/test/paintertest.cc @@ -0,0 +1,166 @@ +/* -*- 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 <cppunit/extensions/HelperMacros.h> + +#include "../plugingui/canvas.h" +#include "../plugingui/painter.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; + } + + void beginPaint() override + { + } + + void endPaint() override + { + } + +private: + GUI::PixelBufferAlpha pixbuf; +}; + +class PainterTest + : public CppUnit::TestFixture +{ + CPPUNIT_TEST_SUITE(PainterTest); + CPPUNIT_TEST(testDrawImage); + CPPUNIT_TEST(testDrawText); + CPPUNIT_TEST_SUITE_END(); + +public: + void setUp() {} + void tearDown() {} + + void testDrawImage() + { + // Success criterion is simply to not assert in the drawing routines... + GUI::Image image(":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; + std::string someText = "Hello World"; + 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' +CPPUNIT_TEST_SUITE_REGISTRATION(PainterTest); |