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/*
* Copyright 2011 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 = the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "sfntly/table/bitmap/composite_bitmap_glyph.h"
namespace sfntly {
/******************************************************************************
* CompositeBitmapGlyph class
******************************************************************************/
CompositeBitmapGlyph::CompositeBitmapGlyph(ReadableFontData* data,
int32_t format)
: BitmapGlyph(data, format) {
Initialize(format);
}
CompositeBitmapGlyph::~CompositeBitmapGlyph() {
}
int32_t CompositeBitmapGlyph::NumComponents() {
return data_->ReadUShort(num_components_offset_);
}
CompositeBitmapGlyph::Component CompositeBitmapGlyph::GetComponent(
int32_t component_num) const {
int32_t component_offset = component_array_offset_ +
component_num * Offset::kEbdtComponentLength;
return CompositeBitmapGlyph::Component(
data_->ReadUShort(component_offset + Offset::kEbdtComponent_glyphCode),
data_->ReadChar(component_offset + Offset::kEbdtComponent_xOffset),
data_->ReadChar(component_offset + Offset::kEbdtComponent_yOffset));
}
void CompositeBitmapGlyph::Initialize(int32_t format) {
if (format == 8) {
num_components_offset_ = Offset::kGlyphFormat8_numComponents;
component_array_offset_ = Offset::kGlyphFormat8_componentArray;
} else if (format == 9) {
num_components_offset_ = Offset::kGlyphFormat9_numComponents;
component_array_offset_ = Offset::kGlyphFormat9_componentArray;
} else {
#if !defined (SFNTLY_NO_EXCEPTION)
throw IllegalStateException("Attempt to create a Composite Bitmap Glyph "
"with a non-composite format.");
#endif
}
}
/******************************************************************************
* CompositeBitmapGlyph::Component class
******************************************************************************/
CompositeBitmapGlyph::Component::Component(const Component& rhs)
: glyph_code_(rhs.glyph_code_),
x_offset_(rhs.x_offset_),
y_offset_(rhs.y_offset_) {
}
bool CompositeBitmapGlyph::Component::operator==(
const CompositeBitmapGlyph::Component& rhs) {
return glyph_code_ == rhs.glyph_code_;
}
CompositeBitmapGlyph::Component& CompositeBitmapGlyph::Component::operator=(
const CompositeBitmapGlyph::Component& rhs) {
glyph_code_ = rhs.glyph_code_;
x_offset_ = rhs.x_offset_;
y_offset_ = rhs.y_offset_;
return *this;
}
CompositeBitmapGlyph::Component::Component(int32_t glyph_code,
int32_t x_offset,
int32_t y_offset)
: glyph_code_(glyph_code), x_offset_(x_offset), y_offset_(y_offset) {
}
} // namespace sfntly
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