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/*
* Copyright (C) 2013 The Android Open Source Project
*
* 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 <SkTypeface.h>
#include <SkPaint.h>
#include <SkFP.h>
#define LOG_TAG "Minikin"
#include <cutils/log.h>
#include <minikin/MinikinFont.h>
#include "MinikinSkia.h"
namespace android {
MinikinFontSkia::MinikinFontSkia(SkTypeface *typeface) :
mTypeface(typeface) {
}
MinikinFontSkia::~MinikinFontSkia() {
SkSafeUnref(mTypeface);
}
bool MinikinFontSkia::GetGlyph(uint32_t codepoint, uint32_t *glyph) const {
SkPaint paint;
paint.setTypeface(mTypeface);
paint.setTextEncoding(SkPaint::kUTF32_TextEncoding);
uint16_t glyph16;
paint.textToGlyphs(&codepoint, sizeof(codepoint), &glyph16);
*glyph = glyph16;
return !!glyph;
}
float MinikinFontSkia::GetHorizontalAdvance(uint32_t glyph_id,
const MinikinPaint &paint) const {
SkPaint skpaint;
skpaint.setTypeface(mTypeface);
skpaint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
// TODO: set more paint parameters from Minikin
skpaint.setTextSize(paint.size);
uint16_t glyph16 = glyph_id;
SkScalar skWidth;
SkRect skBounds;
skpaint.getTextWidths(&glyph16, sizeof(glyph16), &skWidth, &skBounds);
// TODO: get bounds information
return SkScalarToFP(skWidth);
}
bool MinikinFontSkia::GetTable(uint32_t tag, uint8_t *buf, size_t *size) {
if (buf == NULL) {
const size_t tableSize = mTypeface->getTableSize(tag);
*size = tableSize;
return tableSize != 0;
} else {
const size_t actualSize = mTypeface->getTableData(tag, 0, *size, buf);
*size = actualSize;
return actualSize != 0;
}
}
SkTypeface *MinikinFontSkia::GetSkTypeface() {
return mTypeface;
}
int32_t MinikinFontSkia::GetUniqueId() const {
return mTypeface->uniqueID();
}
}
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