axmol/cocos/ui/UIScale9Sprite.cpp

/****************************************************************************
 Copyright (c) 2013-2016 Chukong Technologies Inc.

 http://www.cocos2d-x.org

 Permission is hereby granted, free of charge, to any person obtaining a copy
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 all copies or substantial portions of the Software.

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 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 THE SOFTWARE.
 ****************************************************************************/

#include "ui/UIScale9Sprite.h"
#include "2d/CCSprite.h"
#include "2d/CCSpriteFrameCache.h"
#include "base/CCVector.h"
#include "base/CCDirector.h"
#include "base/ccUTF8.h"
#include "renderer/CCGLProgram.h"
#include "renderer/ccShaders.h"
#include "platform/CCImage.h"
#include "base/CCNinePatchImageParser.h"
#include "2d/CCDrawNode.h"
#include "2d/CCCamera.h"
#include "renderer/CCRenderer.h"

using namespace cocos2d;
using namespace cocos2d::ui;

Scale9Sprite* Scale9Sprite::create()
{
    Scale9Sprite *ret = new (std::nothrow) Scale9Sprite();
    if (ret && ret->init())
    {
        ret->autorelease();
        return ret;
    }
    CC_SAFE_DELETE(ret);
    return nullptr;
}

Scale9Sprite* Scale9Sprite::create(const std::string& filename, const Rect& rect, const Rect& capInsets)
{
    Scale9Sprite* ret = new (std::nothrow) Scale9Sprite();
    if (ret && ret->initWithFile(filename, rect, capInsets))
    {
        ret->autorelease();
        return ret;
    }
    CC_SAFE_DELETE(ret);
    return nullptr;
}

Scale9Sprite* Scale9Sprite::create(const std::string& filename, const Rect& rect)
{
    return create(filename, rect, Rect::ZERO);
}

Scale9Sprite* Scale9Sprite::create(const Rect& capInsets, const std::string& file)
{
    Scale9Sprite* ret = new (std::nothrow) Scale9Sprite();
    if (ret && ret->initWithFile(capInsets, file))
    {
        ret->autorelease();
        return ret;
    }
    CC_SAFE_DELETE(ret);
    return nullptr;
}

Scale9Sprite* Scale9Sprite::create(const std::string& fileaname)
{
    return create(Rect::ZERO, fileaname);
}


Scale9Sprite* Scale9Sprite::createWithSpriteFrame(SpriteFrame* spriteFrame, const Rect& capInsets)
{
    Scale9Sprite* ret = new (std::nothrow) Scale9Sprite();
    if (ret && ret->initWithSpriteFrame(spriteFrame, capInsets))
    {
        ret->autorelease();
        return ret;
    }
    CC_SAFE_DELETE(ret);
    return nullptr;
}

Scale9Sprite* Scale9Sprite::createWithSpriteFrame(SpriteFrame* spriteFrame)
{
    return createWithSpriteFrame(spriteFrame, Rect::ZERO);
}

Scale9Sprite* Scale9Sprite::createWithSpriteFrameName(const std::string& spriteFrameName, const Rect& capInsets)
{
    Scale9Sprite* ret = new (std::nothrow) Scale9Sprite();
    if (ret && ret->initWithSpriteFrameName(spriteFrameName, capInsets))
    {
        ret->autorelease();
        return ret;
    }
    CC_SAFE_DELETE(ret);
    return nullptr;
}

Scale9Sprite* Scale9Sprite::createWithSpriteFrameName(const std::string& spriteFrameName)
{
    Scale9Sprite* ret = new (std::nothrow) Scale9Sprite();
    if (ret && ret->initWithSpriteFrameName(spriteFrameName, Rect::ZERO))
    {
        ret->autorelease();
        return ret;
    }
    CC_SAFE_DELETE(ret);

    log("Could not allocate Scale9Sprite()");
    return nullptr;
}

Scale9Sprite::Scale9Sprite()
: _previousCenterRectNormalized(Rect(0,0,1,1))
, _brightState(State::NORMAL)
, _renderingType(RenderingType::SLICE)
, _insetLeft(0)
, _insetTop(0)
, _insetRight(0)
, _insetBottom(0)
, _isPatch9(false)
{
}

Scale9Sprite::~Scale9Sprite()
{
}

bool Scale9Sprite::initWithFile(const Rect& capInsets, const std::string& file)
{
    // calls super
    bool ret = Sprite::initWithFile(file);
    setupSlice9(getTexture(), capInsets);
    return ret;
}

bool Scale9Sprite::initWithSpriteFrame(SpriteFrame* spriteFrame, const Rect& capInsets)
{
    // calls super
    bool ret = Sprite::initWithSpriteFrame(spriteFrame);
    setupSlice9(getTexture(), capInsets);
    return ret;
}

bool Scale9Sprite::initWithSpriteFrameName(const std::string& spriteFrameName, const Rect& capInsets)
{
    // calls super
    bool ret = Sprite::initWithSpriteFrameName(spriteFrameName);
    setupSlice9(getTexture(), capInsets);
    return ret;
}

bool Scale9Sprite::init()
{
    // calls super
    bool ret = Sprite::init();
    setupSlice9(getTexture(), Rect::ZERO);
    return ret;
}

bool Scale9Sprite::init(Sprite* sprite, const Rect& rect, const Rect& capInsets)
{
    return init(sprite, rect, false, capInsets);
}

bool Scale9Sprite::init(Sprite* sprite, const Rect& rect, bool rotated, const Rect& capInsets)
{
    return init(sprite, rect, rotated, Vec2::ZERO, rect.size, capInsets);
}

bool Scale9Sprite::init(Sprite* sprite, const Rect& origRect, bool rotated, const Vec2 &offset, const Size &originalSize, const Rect& capInsets)
{
    bool ret = false;

    Rect actualCapInsets = capInsets;
    Rect rect(origRect);

    if (sprite) {
        auto texture = sprite->getTexture();

        if (origRect.equals(Rect::ZERO))
            rect.size = texture->getContentSize();

        auto spriteFrame = SpriteFrame::createWithTexture(texture, rect, rotated, offset, originalSize);
        ret = initWithSpriteFrame(spriteFrame);

        if (!capInsets.equals(Rect::ZERO))
            setupSlice9(texture, capInsets);
        else
            setCapInsets(actualCapInsets);
    } else {
        ret = initWithTexture(nullptr, rect, rotated);
        setupSlice9(nullptr, capInsets);
    }
    return ret;
}

bool Scale9Sprite::initWithBatchNode(SpriteBatchNode *batchnode, const Rect &rect, bool rotated, const Rect &capInsets)
{
    auto sprite = Sprite::createWithTexture(batchnode->getTexture());
    return init(sprite, rect, rotated, capInsets);
}

bool Scale9Sprite::initWithFile(const std::string& filename, const Rect& rect, const Rect& capInsets)
{
    // calls super
    bool ret = Sprite::initWithFile(filename, rect);
    setCapInsets(capInsets);
    return ret;
}

bool Scale9Sprite::initWithBatchNode(SpriteBatchNode *batchnode, const Rect &rect, const Rect &capInsets)
{
    auto sprite = Sprite::createWithTexture(batchnode->getTexture());
    return init(sprite, rect, false, capInsets);
}

bool Scale9Sprite::updateWithBatchNode(SpriteBatchNode *batchnode, const Rect &originalRect, bool rotated, const Rect &capInsets)
{
    Sprite *sprite = Sprite::createWithTexture(batchnode->getTexture());
    return updateWithSprite(sprite,
                            originalRect,
                            rotated,
                            Vec2::ZERO,
                            originalRect.size,
                            capInsets);
}

bool Scale9Sprite::updateWithSprite(Sprite* sprite,
                                    const Rect& rect,
                                    bool rotated,
                                    const Rect& capInsets)
{
    return updateWithSprite(sprite, rect, rotated, Vec2::ZERO, rect.size, capInsets);
}

bool Scale9Sprite::updateWithSprite(Sprite* sprite,
                                    const Rect& textureRect,
                                    bool rotated,
                                    const Vec2 &offset,
                                    const Size &originalSize,
                                    const Rect& capInsets)
{
    SpriteFrame *spriteframe = SpriteFrame::createWithTexture(sprite->getTexture(),
                                                              CC_RECT_POINTS_TO_PIXELS(textureRect),
                                                              rotated,
                                                              CC_POINT_POINTS_TO_PIXELS(offset),
                                                              CC_SIZE_POINTS_TO_PIXELS(originalSize));
    setSpriteFrame(spriteframe);
    setCapInsets(capInsets);
    return true;
}

Scale9Sprite* Scale9Sprite::resizableSpriteWithCapInsets(const Rect& capInsets) const
{
    // FIXME: there are no test cases for this method
    Scale9Sprite* ret = new (std::nothrow) Scale9Sprite();
    if (ret && ret->init(const_cast<Scale9Sprite*>(this),
                         _rect,
                         _rectRotated,
                         Vec2::ZERO,
                         _originalContentSize,
                         capInsets) )
    {
        ret->autorelease();
        return ret;
    }
    CC_SAFE_DELETE(ret);
    return nullptr;
}

Scale9Sprite::State Scale9Sprite::getState() const
{
    return _brightState;
}

void Scale9Sprite::setState(Scale9Sprite::State state)
{
    if (_brightState != state) {
        _brightState = state;

        GLProgramState *glState = nullptr;
        switch (state)
        {
            case State::NORMAL:
                glState = GLProgramState::getOrCreateWithGLProgramName(GLProgram::SHADER_NAME_POSITION_TEXTURE_COLOR_NO_MVP, getTexture());
                break;
            case State::GRAY:
                glState = GLProgramState::getOrCreateWithGLProgramName(GLProgram::SHADER_NAME_POSITION_GRAYSCALE, getTexture());
            default:
                break;
        }

        setGLProgramState(glState);
        _brightState = state;
    }
}

void Scale9Sprite::setSpriteFrame(SpriteFrame * spriteFrame, const Rect& capInsets)
{
    setSpriteFrame(spriteFrame);
    setCapInsets(capInsets);
}

void Scale9Sprite::setPreferredSize(const Size& preferredSize)
{
    setContentSize(preferredSize);
}

void Scale9Sprite::setInsetLeft(float insetLeft)
{
    _insetLeft = insetLeft;
    updateCapInset();
}

void Scale9Sprite::setInsetTop(float insetTop)
{
    _insetTop = insetTop;
    updateCapInset();
}

void Scale9Sprite::setInsetRight(float insetRight)
{
    _insetRight = insetRight;
    updateCapInset();
}

void Scale9Sprite::setInsetBottom(float insetBottom)
{
    _insetBottom = insetBottom;
    updateCapInset();
}

void Scale9Sprite::updateCapInset()
{
    Rect capInsets(_insetLeft,
                   _insetTop,
                   _originalContentSize.width - _insetRight - _insetLeft,
                   _originalContentSize.height - _insetBottom -_insetTop);
    setCapInsets(capInsets);
}

Size Scale9Sprite::getOriginalSize() const
{
    return _originalContentSize;
}

Size Scale9Sprite::getPreferredSize() const
{
    return getContentSize();
}

float Scale9Sprite::getInsetLeft() const
{
    return _insetLeft;
}

float Scale9Sprite::getInsetTop() const
{
    return _insetTop;
}

float Scale9Sprite::getInsetRight() const
{
    return _insetRight;
}

float Scale9Sprite::getInsetBottom() const
{
    return _insetBottom;
}

void Scale9Sprite::setScale9Enabled(bool enabled)
{
    RenderingType type = enabled ? RenderingType::SLICE : RenderingType::SIMPLE;
    setRenderingType(type);

    // only enable strech en scale9 is enabled
    // for backward compatibiliy, since Sprite streches the texture no matter the rendering type
    setStrechEnabled(enabled);
}

bool Scale9Sprite::isScale9Enabled() const
{
    return (_renderingType == RenderingType::SLICE);
}

Sprite* Scale9Sprite::getSprite()
{
    return this;
}

// (0,0)  O = capInsets.origin
// v0----------------------
// |        |      |      |
// |        |      |      |
// v1-------O------+------|
// |        |      |      |
// |        |      |      |
// v2-------+------+------|
// |        |      |      |
// |        |      |      |
// v3-------------------- (1,1)  (texture coordinate is flipped)
// u0       u1     u2     u3

//
// y3----------------------(preferedSize.width, preferedSize.height)
// |        |      |      |
// |        |      |      |
// y2-------O------+------|
// |        |      |      |
// |        |      |      |
// y1-------+------+------|
// |        |      |      |
// |        |      |      |
//x0,y0--------------------
//         x1     x2     x3

void Scale9Sprite::setRenderingType(Scale9Sprite::RenderingType type)
{
    if (_renderingType != type) {
        _renderingType = type;
        if (_renderingType == RenderingType::SIMPLE) {
            _previousCenterRectNormalized = getCenterRectNormalized();
            setCenterRectNormalized(Rect(0,0,1,1));
        } else {
            setCenterRectNormalized(_previousCenterRectNormalized);
        }
    }
}

Scale9Sprite::RenderingType Scale9Sprite::getRenderingType() const
{
    return _renderingType;
}

void Scale9Sprite::resetRender()
{
    // nothing. keeping it to be backwards compatible
}

void Scale9Sprite::setupSlice9(Texture2D* texture, const Rect& capInsets)
{
    setCapInsets(capInsets);

    if (texture && texture->isContain9PatchInfo()) {
        auto& parsedCapInset = texture->getSpriteFrameCapInset(getSpriteFrame());

        if(!parsedCapInset.equals(Rect::ZERO))
        {
            // adjust texture rect. 1.3f seems to be the magic number
            // to avoid artifacts
            auto rect = getTextureRect();
            rect.origin.x += 1.3f;
            rect.origin.y += 1.3f;
            rect.size.width -= 2.0f;
            rect.size.height -= 2.0f;
            setTextureRect(rect);

            // and after adjusting the texture, set the new cap insets
            _isPatch9 = true;
            setCapInsets(parsedCapInset);
        }
    }
}

void Scale9Sprite::setCapInsets(const cocos2d::Rect &insetsCopy)
{
    Rect insets = insetsCopy;

    // When Insets == Zero --> we should use a 1/3 of its untrimmed size
    if (insets.equals(Rect::ZERO)) {
        insets = Rect( _originalContentSize.width / 3.0f,
                      _originalContentSize.height / 3.0f,
                      _originalContentSize.width / 3.0f,
                      _originalContentSize.height / 3.0f);
    }

    // we have to convert from untrimmed to trimmed
    // Sprite::setCenterRect is using trimmed values (to be compatible with Cocos Creator)
    // Scale9Sprite::setCapInsects uses untrimmed values (which makes more sense)

    // use _rect coordinates. recenter origin to calculate the
    // intersecting rectangle
    insets.origin.x -= _offsetPosition.x;
    insets.origin.y -= _offsetPosition.y;

    // intersecting rectangle
    const float x1 = std::max(insets.origin.x, 0.0f);
    const float y1 = std::max(insets.origin.y, 0.0f);
    const float x2 = std::min(insets.origin.x + insets.size.width, 0.0f + _rect.size.width);
    const float y2 = std::min(insets.origin.y + insets.size.height, 0.0f + _rect.size.height);

    // centerRect uses the trimmed frame origin as 0,0.
    // so, recenter inset rect
    insets.setRect(x1,
                   y1,
                   x2 - x1,
                   y2 - y1);
    
    setCenterRect(insets);
}

Rect Scale9Sprite::getCapInsets() const
{
    return getCenterRect();
}