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7b250767bc
This updates the Skia sample implementation to implement GetBounds, but the FreeType implementation is NYI (to be fixed in future commit). Change-Id: I24eda14d5fb11c2a1e81394ad8c779de3292dd79
82 lines
2.3 KiB
C++
82 lines
2.3 KiB
C++
#include <SkTypeface.h>
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#include <SkPaint.h>
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#include <minikin/MinikinFont.h>
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#include "MinikinSkia.h"
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namespace android {
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MinikinFontSkia::MinikinFontSkia(SkTypeface *typeface) :
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mTypeface(typeface) {
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}
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MinikinFontSkia::~MinikinFontSkia() {
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SkSafeUnref(mTypeface);
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}
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bool MinikinFontSkia::GetGlyph(uint32_t codepoint, uint32_t *glyph) const {
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SkPaint paint;
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paint.setTypeface(mTypeface);
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paint.setTextEncoding(SkPaint::kUTF32_TextEncoding);
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uint16_t glyph16;
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paint.textToGlyphs(&codepoint, sizeof(codepoint), &glyph16);
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*glyph = glyph16;
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//printf("glyph for U+%04x = %d\n", codepoint, glyph16);
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return !!glyph;
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}
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static void MinikinFontSkia_SetSkiaPaint(SkTypeface* typeface, SkPaint* skPaint, const MinikinPaint& paint) {
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skPaint->setTypeface(typeface);
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skPaint->setTextEncoding(SkPaint::kGlyphID_TextEncoding);
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// TODO: set more paint parameters from Minikin
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skPaint->setTextSize(paint.size);
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}
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float MinikinFontSkia::GetHorizontalAdvance(uint32_t glyph_id,
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const MinikinPaint &paint) const {
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SkPaint skPaint;
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uint16_t glyph16 = glyph_id;
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SkScalar skWidth;
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MinikinFontSkia_SetSkiaPaint(mTypeface, &skPaint, paint);
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skPaint.getTextWidths(&glyph16, sizeof(glyph16), &skWidth, NULL);
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#ifdef VERBOSE
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ALOGD("width for typeface %d glyph %d = %f", mTypeface->uniqueID(), glyph_id
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#endif
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return skWidth;
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}
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void MinikinFontSkia::GetBounds(MinikinRect* bounds, uint32_t glyph_id,
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const MinikinPaint& paint) const {
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SkPaint skPaint;
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uint16_t glyph16 = glyph_id;
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SkRect skBounds;
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MinikinFontSkia_SetSkiaPaint(mTypeface, &skPaint, paint);
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skPaint.getTextWidths(&glyph16, sizeof(glyph16), NULL, &skBounds);
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bounds->mLeft = skBounds.fLeft;
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bounds->mTop = skBounds.fTop;
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bounds->mRight = skBounds.fRight;
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bounds->mBottom = skBounds.fBottom;
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}
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bool MinikinFontSkia::GetTable(uint32_t tag, uint8_t *buf, size_t *size) {
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if (buf == NULL) {
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const size_t tableSize = mTypeface->getTableSize(tag);
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*size = tableSize;
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return tableSize != 0;
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} else {
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const size_t actualSize = mTypeface->getTableData(tag, 0, *size, buf);
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*size = actualSize;
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return actualSize != 0;
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}
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}
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SkTypeface *MinikinFontSkia::GetSkTypeface() {
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return mTypeface;
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}
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int32_t MinikinFontSkia::GetUniqueId() const {
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return mTypeface->uniqueID();
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}
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}
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