mirror of https://github.com/axmolengine/axmol.git
120 lines
3.9 KiB
C++
120 lines
3.9 KiB
C++
/****************************************************************************
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Copyright (c) 2013-2016 Chukong Technologies Inc.
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Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
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https://axmolengine.github.io/
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "platform/PlatformMacros.h"
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#include "math/Math.h"
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NS_AX_BEGIN
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class Image;
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class SpriteFrame;
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/**
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* A class for paring Android .9 patch image.
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* For more about Android .9 patch image format, please refer to
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* http://developer.android.com/tools/help/draw9patch.html
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*
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* The class could parse a single .9 patch image and produce the capInsets
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* as well as a sprite atlas and store all the capInsets infos in a Texture2D.
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* Note:
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* - Currently only PixelFormat::RGBA8 is supported.
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* - TexturePacker Trim mode is not supported at the moment.
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*/
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class AX_DLL NinePatchImageParser
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{
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public:
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/**
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* Determines whether a filename contains ".9.png" suffix.
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* @param filename A 9-patch image name.
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*
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* @return If the filename contains ".9.png", then return true, otherwise false.
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*/
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static bool isNinePatchImage(std::string_view filename);
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/**
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* Default constructor.
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*
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*/
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NinePatchImageParser();
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/**
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* Instantiate a NinePatchImageParser with a Image object.
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*
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* @param image A Image object pointer.
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*
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* @return A NinePatchImageParser instance.
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*/
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explicit NinePatchImageParser(Image* image);
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/**
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* Instantiate a NinePatchImageParser with a Image object and the spriteFrame info.
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* The spriteFrame contains the frame rect in the image atlas and whether it
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* is rotated or not.
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*
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* @param image A Image object pointer.
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* @param frameRect The sprite frame rect in the image atlas.
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* @param rotated Whether is sprite frame is rotated in the image atlas.
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*/
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NinePatchImageParser(Image* image, const Rect& frameRect, bool rotated);
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/**
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* Change the sprite frame info.
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* It is useful when parsing multiple sprite frame with only on NinePatchImageParser.
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*
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* @param frameRect The sprite frame rect in the image atlas.
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* @param rotated Whether is sprite frame is rotated in the image atlas.
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*/
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void setSpriteFrameInfo(Image* image, const Rect& frameRect, bool rotated);
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/**
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* Default destructor.
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*/
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virtual ~NinePatchImageParser();
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/**
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* Parsing the image data and extract the capInsets info.
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* @return The capInsets Rect.
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*/
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Rect parseCapInset() const;
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private:
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enum class Direction
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{
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HORIZONTAL,
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VERTICAL
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};
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int getPixelOriginOffset(Direction direction) const;
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Vec2 parseHorizontalMargin() const;
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Vec2 parseVerticalMargin() const;
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int getFrameWidth() const;
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int getFrameHeight() const;
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Image* _image;
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Rect _imageFrame;
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bool _isRotated;
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};
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NS_AX_END
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