xref: /foundation/arkui/ui_lite/frameworks/draw/draw_label.h

/*
 * Copyright (c) 2020-2022 Huawei Device Co., Ltd.
 * 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.
 */

#ifndef GRAPHIC_LITE_DRAW_LABEL_H
#define GRAPHIC_LITE_DRAW_LABEL_H

#include "common/typed_text.h"
#include "draw/draw_utils.h"
#include "gfx_utils/geometry2d.h"
#include "gfx_utils/heap_base.h"
#include "gfx_utils/style.h"

namespace OHOS {
class DrawLabel : public HeapBase {
public:
    static uint16_t DrawTextOneLine(BufferInfo& gfxDstBuffer, const LabelLineInfo& labelLine,
                                    uint16_t& letterIndex);

    static void DrawArcText(BufferInfo& gfxDstBuffer, const Rect& mask, const char* text, const Point& arcCenter,
                            uint16_t fontId, uint8_t fontSize, const ArcTextInfo arcTextInfo, const float changeAngle,
                            TextOrientation orientation, const Style& style, uint8_t opaScale, bool compatibilityMode);

    static bool CalculateAngle(uint16_t letterWidth,
                               uint16_t letterHeight,
                               int16_t letterSpace,
                               const ArcTextInfo arcTextInfo,
                               bool xorFlag,
                               uint32_t index,
                               TextOrientation orientation,
                               float& posX,
                               float& posY,
                               float& rotateAngle,
                               float& angle,
                               const Point& arcCenter,
                               bool compatibilityMode);

    static void DrawLetterWithRotate(BufferInfo& gfxDstBuffer,
                                     const Rect& mask,
                                     const ArcLetterInfo& letterInfo,
                                     float posX,
                                     float posY);

    static uint8_t GetLineMaxLetterSize(const char* text, uint16_t lineLength, uint16_t fontId, uint8_t fontSize,
                                        uint16_t letterIndex, SpannableString* spannableString);
    static void GetLineBackgroundColor(uint16_t letterIndex, List<LineBackgroundColor>* linebackgroundColor,
                                       bool& havelinebackground, ColorType& linebgColor);
    static void GetBackgroundColor(uint16_t letterIndex, List<BackgroundColor>* backgroundColor,
                                   bool& havebackground, ColorType& bgColor);
    static void GetForegroundColor(uint16_t letterIndex, List<ForegroundColor>* foregroundColor, ColorType& fgColor);
    static void DrawLineBackgroundColor(BufferInfo& gfxDstBuffer, uint16_t letterIndex,
                                        const LabelLineInfo& labelLine);

private:
    static bool CalculatedTransformDataInfo(uint8_t** buffer, TransformDataInfo& letterTranDataInfo,
        const ArcLetterInfo& letterInfo);

    static bool CalculatedClipAngle(const ArcLetterInfo& letterInfo, float& angle);

    static void CalculatedBeginAndCopySize(const ArcLetterInfo& letterInfo, const uint16_t sizePerPx,
        const uint16_t cols, const int16_t offsetX, uint16_t& begin, uint16_t& copyCols, TextInRange& range);

    static void OnCalculatedClockwise(const ArcLetterInfo& letterInfo, const uint16_t sizePerPx,
        const uint16_t cols, const int16_t offsetX, uint16_t& begin, uint16_t& copyCols, TextInRange& range);

    static void OnCalculatedAnticlockwise(const ArcLetterInfo& letterInfo, const uint16_t sizePerPx,
        const uint16_t cols, const int16_t offsetX, uint16_t& begin, uint16_t& copyCols, TextInRange& range);
};
} // namespace OHOS
#endif // GRAPHIC_LITE_DRAW_LABEL_H