mirror of
https://github.com/love2d/love.git
synced 2026-08-16 00:02:12 +02:00
Alex Szpakowski
174 lines
3.3 KiB
C++
174 lines
3.3 KiB
C++
/**
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* Copyright (c) 2006-2020 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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// LOVE
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#include "GlyphData.h"
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// UTF-8
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#include "libraries/utf8/utf8.h"
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// stdlib
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#include <iostream>
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#include <cstddef>
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namespace love
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{
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namespace font
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{
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love::Type GlyphData::type("GlyphData", &Data::type);
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GlyphData::GlyphData(uint32 glyph, GlyphMetrics glyphMetrics, PixelFormat f)
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: glyph(glyph)
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, metrics(glyphMetrics)
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, data(nullptr)
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, format(f)
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{
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if (f != PIXELFORMAT_LA8_UNORM && f != PIXELFORMAT_RGBA8_UNORM)
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throw love::Exception("Invalid GlyphData pixel format.");
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if (metrics.width > 0 && metrics.height > 0)
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data = new uint8[metrics.width * metrics.height * getPixelSize()];
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}
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GlyphData::GlyphData(const GlyphData &c)
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: glyph(c.glyph)
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, metrics(c.metrics)
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, data(nullptr)
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, format(c.format)
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{
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if (metrics.width > 0 && metrics.height > 0)
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{
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data = new uint8[metrics.width * metrics.height * getPixelSize()];
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memcpy(data, c.data, c.getSize());
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}
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}
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GlyphData::~GlyphData()
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{
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delete[] data;
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}
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GlyphData *GlyphData::clone() const
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{
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return new GlyphData(*this);
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}
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void *GlyphData::getData() const
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{
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return data;
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}
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size_t GlyphData::getPixelSize() const
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{
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return getPixelFormatBlockSize(format);
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}
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void *GlyphData::getData(int x, int y) const
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{
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size_t offset = (y * getWidth() + x) * getPixelSize();
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return data + offset;
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}
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size_t GlyphData::getSize() const
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{
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return size_t(getWidth() * getHeight()) * getPixelSize();
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}
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int GlyphData::getHeight() const
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{
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return metrics.height;
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}
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int GlyphData::getWidth() const
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{
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return metrics.width;
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}
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uint32 GlyphData::getGlyph() const
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{
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return glyph;
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}
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std::string GlyphData::getGlyphString() const
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{
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char u[5] = {0, 0, 0, 0, 0};
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ptrdiff_t length = 0;
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try
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{
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char *end = utf8::append(glyph, u);
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length = end - u;
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}
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catch (utf8::exception &e)
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{
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throw love::Exception("UTF-8 decoding error: %s", e.what());
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}
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// Just in case...
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if (length < 0)
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return "";
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return std::string(u, length);
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}
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int GlyphData::getAdvance() const
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{
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return metrics.advance;
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}
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int GlyphData::getBearingX() const
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{
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return metrics.bearingX;
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}
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int GlyphData::getBearingY() const
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{
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return metrics.bearingY;
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}
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int GlyphData::getMinX() const
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{
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return getBearingX();
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}
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int GlyphData::getMinY() const
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{
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return getHeight() - getBearingY();
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}
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int GlyphData::getMaxX() const
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{
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return getBearingX() + getWidth();
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}
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int GlyphData::getMaxY() const
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{
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return getBearingY();
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}
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PixelFormat GlyphData::getFormat() const
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{
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return format;
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}
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} // font
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} // love
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