am 1fd14d00: am b0612fdb: Merge "Remove unused TextLayout.h" into lmp-dev

/*

 * Copyright (C) 2010 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 "jni.h"

#include "SkCanvas.h"

#include "SkPaint.h"

#include "unicode/utypes.h"

#include "TextLayoutCache.h"

namespace android {

#define UNICODE_NOT_A_CHAR              0xffff

#define UNICODE_ZWSP                    0x200b

#define UNICODE_FIRST_LOW_SURROGATE     0xdc00

#define UNICODE_FIRST_HIGH_SURROGATE    0xd800

#define UNICODE_FIRST_PRIVATE_USE       0xe000

#define UNICODE_FIRST_RTL_CHAR          0x0590

/*

 * Temporary buffer size

 */

#define CHAR_BUFFER_SIZE 80

/**

 * Turn on for using the Cache

 */

#define USE_TEXT_LAYOUT_CACHE 1

enum {

    kBidi_LTR = 0,

    kBidi_RTL = 1,

    kBidi_Default_LTR = 2,

    kBidi_Default_RTL = 3,

    kBidi_Force_LTR = 4,

    kBidi_Force_RTL = 5,

    kBidi_Mask = 0x7

};

enum {

    kDirection_LTR = 0,

    kDirection_RTL = 1,

    kDirection_Mask = 0x1

};

class TextLayout {

public:

    static void getTextRunAdvances(SkPaint* paint, const jchar* chars, jint start,

                                   jint count, jint contextCount, jint dirFlags,

                                   jfloat* resultAdvances, jfloat* resultTotalAdvance);

    static void getTextPath(SkPaint* paint, const jchar* text, jsize len,

                            jint bidiFlags, jfloat x, jfloat y, SkPath* path);

    static void drawTextOnPath(SkPaint* paint, const jchar* text, jsize len,

                               int bidiFlags, jfloat hOffset, jfloat vOffset,

                               SkPath* path, SkCanvas* canvas);

private:

    static bool needsLayout(const jchar* text, jint len, jint bidiFlags);

    static void handleText(SkPaint* paint, const jchar* text, jsize len,

                           int bidiFlags, jfloat x, jfloat y, SkPath* path);

};

} // namespace android