cocos-enhance-kit/cocos2d-x/cocos/platform/android/CCCanvasRenderingContext2D-android.cpp
2022-06-25 00:23:03 +08:00

620 lines
18 KiB
C++

#include "platform/CCCanvasRenderingContext2D.h"
#include "base/ccTypes.h"
#include "base/csscolorparser.hpp"
#include "cocos/scripting/js-bindings/jswrapper/SeApi.h"
#include "platform/android/jni/JniHelper.h"
#include "platform/android/jni/JniImp.h"
#include <regex>
#ifndef JCLS_CANVASIMPL
#define JCLS_CANVASIMPL "org/cocos2dx/lib/CanvasRenderingContext2DImpl"
#endif
using namespace cocos2d;
enum class CanvasTextAlign {
LEFT,
CENTER,
RIGHT
};
enum class CanvasTextBaseline {
TOP,
MIDDLE,
BOTTOM
};
class CanvasRenderingContext2DImpl
{
public:
CanvasRenderingContext2DImpl()
{
jobject obj = JniHelper::newObject(JCLS_CANVASIMPL);
_obj = JniHelper::getEnv()->NewGlobalRef(obj);
JniHelper::getEnv()->DeleteLocalRef(obj);
}
~CanvasRenderingContext2DImpl()
{
JniHelper::getEnv()->DeleteGlobalRef(_obj);
}
void recreateBuffer(float w, float h)
{
_bufferWidth = w;
_bufferHeight = h;
if (_bufferWidth < 1.0f || _bufferHeight < 1.0f)
return;
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "recreateBuffer", w, h);
fillData();
}
void beginPath()
{
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "beginPath");
}
void closePath()
{
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "closePath");
}
void moveTo(float x, float y)
{
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "moveTo", x, y);
}
void lineTo(float x, float y)
{
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "lineTo", x, y);
}
void stroke()
{
if (_bufferWidth < 1.0f || _bufferHeight < 1.0f)
return;
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "stroke");
fillData();
}
void fill()
{
if (_bufferWidth < 1.0f || _bufferHeight < 1.0f)
return;
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "fill");
fillData();
}
void saveContext()
{
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "saveContext");
}
void restoreContext()
{
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "restoreContext");
}
void rect(float x, float y, float w, float h)
{
if (_bufferWidth < 1.0f || _bufferHeight < 1.0f)
return;
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "rect", x, y, w, h);
fillData();
}
void clearRect(float x, float y, float w, float h)
{
if (_bufferWidth < 1.0f || _bufferHeight < 1.0f)
return;
if (x >= _bufferWidth || y >= _bufferHeight)
return;
if (x + w > _bufferWidth)
w = _bufferWidth - x;
if (y + h > _bufferHeight)
h = _bufferHeight - y;
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "clearRect", x, y, w, h);
fillData();
}
void fillRect(float x, float y, float w, float h)
{
if (_bufferWidth < 1.0f || _bufferHeight < 1.0f)
return;
if (x >= _bufferWidth || y >= _bufferHeight)
return;
if (x + w > _bufferWidth)
w = _bufferWidth - x;
if (y + h > _bufferHeight)
h = _bufferHeight - y;
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "fillRect", x, y, w, h);
fillData();
}
void fillText(const std::string& text, float x, float y, float maxWidth)
{
if (text.empty() || _bufferWidth < 1.0f || _bufferHeight < 1.0f)
return;
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "fillText", text, x, y, maxWidth);
fillData();
}
void strokeText(const std::string& text, float x, float y, float maxWidth)
{
if (text.empty() || _bufferWidth < 1.0f || _bufferHeight < 1.0f)
return;
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "strokeText", text, x, y, maxWidth);
fillData();
}
float measureText(const std::string& text)
{
if (text.empty())
return 0.0f;
return JniHelper::callObjectFloatMethod(_obj, JCLS_CANVASIMPL, "measureText", text);
}
void updateFont(const std::string& fontName, float fontSize, bool bold, bool italic, bool oblique, bool smallCaps)
{
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "updateFont", fontName, fontSize, bold, italic, oblique, smallCaps);
}
void setLineCap(const std::string& lineCap) {
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "setLineCap", lineCap);
}
void setLineJoin(const std::string& lineJoin) {
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "setLineJoin", lineJoin);
}
void setTextAlign(CanvasTextAlign align)
{
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "setTextAlign", (int)align);
}
void setTextBaseline(CanvasTextBaseline baseline)
{
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "setTextBaseline", (int)baseline);
}
void setFillStyle(float r, float g, float b, float a)
{
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "setFillStyle", r, g, b, a);
}
void setStrokeStyle(float r, float g, float b, float a)
{
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "setStrokeStyle", r, g, b, a);
}
void setLineWidth(float lineWidth)
{
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "setLineWidth", lineWidth);
}
void _fillImageData(const Data &imageData, float imageWidth, float imageHeight, float offsetX, float offsetY) {
if (_bufferWidth < 1.0f || _bufferHeight < 1.0f)
return;
jbyteArray arr = JniHelper::getEnv()->NewByteArray(imageData.getSize());
JniHelper::getEnv()->SetByteArrayRegion(arr, 0, imageData.getSize(),
(const jbyte *) imageData.getBytes());
JniHelper::callObjectVoidMethod(_obj, JCLS_CANVASIMPL, "_fillImageData", arr, imageWidth,
imageHeight, offsetX, offsetY);
JniHelper::getEnv()->DeleteLocalRef(arr);
fillData();
}
const Data& getDataRef() const
{
return _data;
}
void setPremultiply(bool multiply)
{
_premultiply = multiply;
}
#define CLAMP(V, HI) std::min( (V), (HI) )
void unMultiplyAlpha(unsigned char* ptr, ssize_t size)
{
// Android source data is not premultiplied alpha when API >= 19
// please refer CanvasRenderingContext2DImpl::recreateBuffer(float w, float h)
// in CanvasRenderingContext2DImpl.java
// if (getAndroidSDKInt() >= 19)
// return;
float alpha;
for (int i = 0; i < size; i += 4)
{
alpha = (float)ptr[i + 3];
if (alpha > 0)
{
ptr[i] = CLAMP((int)((float)ptr[i] / alpha * 255), 255);
ptr[i+1] = CLAMP((int)((float)ptr[i+1] / alpha * 255), 255);
ptr[i+2] = CLAMP((int)((float)ptr[i+2] / alpha * 255), 255);
}
}
}
void fillData()
{
jbyteArray arr = JniHelper::callObjectByteArrayMethod(_obj, JCLS_CANVASIMPL, "getDataRef");
jsize len = JniHelper::getEnv()->GetArrayLength(arr);
jbyte* jbarray = (jbyte *)malloc(len * sizeof(jbyte));
JniHelper::getEnv()->GetByteArrayRegion(arr,0,len,jbarray);
if (!_premultiply)
{
unMultiplyAlpha( (unsigned char*) jbarray, len);
}
_data.fastSet((unsigned char*) jbarray, len); //IDEA: DON'T create new jbarray every time.
JniHelper::getEnv()->DeleteLocalRef(arr);
}
private:
jobject _obj = nullptr;
Data _data;
float _bufferWidth = 0.0f;
float _bufferHeight = 0.0f;
bool _premultiply = true;
};
namespace {
void fillRectWithColor(uint8_t* buf, uint32_t totalWidth, uint32_t totalHeight, uint32_t x, uint32_t y, uint32_t width, uint32_t height, uint8_t r, uint8_t g, uint8_t b)
{
assert(x + width <= totalWidth);
assert(y + height <= totalHeight);
uint32_t y0 = totalHeight - (y + height);
uint32_t y1 = totalHeight - y;
uint8_t* p;
for (uint32_t offsetY = y0; offsetY < y1; ++offsetY)
{
for (uint32_t offsetX = x; offsetX < (x + width); ++offsetX)
{
p = buf + (totalWidth * offsetY + offsetX) * 3;
*p++ = r;
*p++ = g;
*p++ = b;
}
}
}
}
NS_CC_BEGIN
CanvasGradient::CanvasGradient()
{
// SE_LOGD("CanvasGradient constructor: %p\n", this);
}
CanvasGradient::~CanvasGradient()
{
// SE_LOGD("CanvasGradient destructor: %p\n", this);
}
void CanvasGradient::addColorStop(float offset, const std::string& color)
{
// SE_LOGD("CanvasGradient::addColorStop: %p\n", this);
}
// CanvasRenderingContext2D
CanvasRenderingContext2D::CanvasRenderingContext2D(float width, float height)
: __width(width)
, __height(height)
{
// SE_LOGD("CanvasRenderingContext2D constructor: %p, width: %f, height: %f\n", this, width, height);
_impl = new CanvasRenderingContext2DImpl();
recreateBufferIfNeeded();
}
CanvasRenderingContext2D::~CanvasRenderingContext2D()
{
// SE_LOGD("CanvasRenderingContext2D destructor: %p\n", this);
delete _impl;
}
void CanvasRenderingContext2D::recreateBufferIfNeeded()
{
if (_isBufferSizeDirty)
{
_isBufferSizeDirty = false;
// SE_LOGD("Recreate buffer %p, w: %f, h:%f\n", this, __width, __height);
_impl->recreateBuffer(__width, __height);
if (_canvasBufferUpdatedCB != nullptr)
_canvasBufferUpdatedCB(_impl->getDataRef());
}
}
void CanvasRenderingContext2D::rect(float x, float y, float width, float height)
{
// SE_LOGD("CanvasRenderingContext2D::rect: %p, %f, %f, %f, %f\n", this, x, y, width, height);
recreateBufferIfNeeded();
_impl->rect(x, y, width, height);
}
void CanvasRenderingContext2D::clearRect(float x, float y, float width, float height)
{
// SE_LOGD("CanvasRenderingContext2D::clearRect: %p, %f, %f, %f, %f\n", this, x, y, width, height);
recreateBufferIfNeeded();
_impl->clearRect(x, y, width, height);
}
void CanvasRenderingContext2D::fillRect(float x, float y, float width, float height)
{
recreateBufferIfNeeded();
_impl->fillRect(x, y, width, height);
if (_canvasBufferUpdatedCB != nullptr)
_canvasBufferUpdatedCB(_impl->getDataRef());
}
void CanvasRenderingContext2D::fillText(const std::string& text, float x, float y, float maxWidth)
{
// SE_LOGD("CanvasRenderingContext2D::fillText: %s, %f, %f, %f\n", text.c_str(), x, y, maxWidth);
if (text.empty())
return;
recreateBufferIfNeeded();
_impl->fillText(text, x, y, maxWidth);
if (_canvasBufferUpdatedCB != nullptr)
_canvasBufferUpdatedCB(_impl->getDataRef());
}
void CanvasRenderingContext2D::strokeText(const std::string& text, float x, float y, float maxWidth)
{
// SE_LOGD("CanvasRenderingContext2D::strokeText: %s, %f, %f, %f\n", text.c_str(), x, y, maxWidth);
if (text.empty())
return;
recreateBufferIfNeeded();
_impl->strokeText(text, x, y, maxWidth);
if (_canvasBufferUpdatedCB != nullptr)
_canvasBufferUpdatedCB(_impl->getDataRef());
}
cocos2d::Size CanvasRenderingContext2D::measureText(const std::string& text)
{
// SE_LOGD("CanvasRenderingContext2D::measureText: %s\n", text.c_str());
return cocos2d::Size(_impl->measureText(text), 0);
}
CanvasGradient* CanvasRenderingContext2D::createLinearGradient(float x0, float y0, float x1, float y1)
{
return nullptr;
}
void CanvasRenderingContext2D::save()
{
_impl->saveContext();
}
void CanvasRenderingContext2D::beginPath()
{
_impl->beginPath();
}
void CanvasRenderingContext2D::closePath()
{
_impl->closePath();
}
void CanvasRenderingContext2D::moveTo(float x, float y)
{
_impl->moveTo(x, y);
}
void CanvasRenderingContext2D::lineTo(float x, float y)
{
_impl->lineTo(x, y);
}
void CanvasRenderingContext2D::stroke()
{
_impl->stroke();
if (_canvasBufferUpdatedCB != nullptr)
_canvasBufferUpdatedCB(_impl->getDataRef());
}
void CanvasRenderingContext2D::fill()
{
_impl->fill();
if (_canvasBufferUpdatedCB != nullptr)
_canvasBufferUpdatedCB(_impl->getDataRef());
}
void CanvasRenderingContext2D::restore()
{
_impl->restoreContext();
}
void CanvasRenderingContext2D::setCanvasBufferUpdatedCallback(const CanvasBufferUpdatedCallback& cb)
{
_canvasBufferUpdatedCB = cb;
}
void CanvasRenderingContext2D::setPremultiply(bool multiply)
{
_impl->setPremultiply(multiply);
}
void CanvasRenderingContext2D::set__width(float width)
{
// SE_LOGD("CanvasRenderingContext2D::set__width: %f\n", width);
__width = width;
_isBufferSizeDirty = true;
recreateBufferIfNeeded();
}
void CanvasRenderingContext2D::set__height(float height)
{
// SE_LOGD("CanvasRenderingContext2D::set__height: %f\n", height);
__height = height;
_isBufferSizeDirty = true;
recreateBufferIfNeeded();
}
void CanvasRenderingContext2D::set_lineWidth(float lineWidth)
{
_lineWidth = lineWidth;
_impl->setLineWidth(lineWidth);
}
void CanvasRenderingContext2D::set_lineJoin(const std::string& lineJoin)
{
if(lineJoin.empty()) return ;
_impl->setLineJoin(lineJoin);
}
void CanvasRenderingContext2D::set_lineCap(const std::string& lineCap)
{
if(lineCap.empty()) return ;
_impl->setLineCap(lineCap);
}
/*
* support format e.g.: "oblique bold small-caps 18px Arial"
* "italic bold small-caps 25px Arial"
* "italic 25px Arial"
* */
void CanvasRenderingContext2D::set_font(const std::string& font)
{
if (_font != font)
{
_font = font;
std::string fontName = "sans-serif";
std::string fontSizeStr = "30";
std::regex re("\\s*((\\d+)([\\.]\\d+)?)px\\s+([^\\r\\n]*)");
std::match_results<std::string::const_iterator> results;
if (std::regex_search(_font.cbegin(), _font.cend(), results, re))
{
fontSizeStr = results[2].str();
// support get font name from `60px American` or `60px "American abc-abc_abc"`
// support get font name contain space,example `times new roman`
// if regex rule that does not conform to the rules,such as Chinese,it defaults to sans-serif
std::match_results<std::string::const_iterator> fontResults;
std::regex fontRe("([\\w\\s-]+|\"[\\w\\s-]+\"$)");
if(std::regex_match(results[4].str(), fontResults, fontRe))
{
fontName = results[4].str();
}
}
float fontSize = atof(fontSizeStr.c_str());
bool isBold = font.find("bold", 0) != std::string::npos;
bool isItalic = font.find("italic", 0) != std::string::npos;
bool isSmallCaps = font.find("small-caps", 0) != std::string::npos;
bool isOblique = font.find("oblique", 0) != std::string::npos;
//font-style: italic, oblique, normal
//font-weight: normal, bold
//font-variant: normal, small-caps
_impl->updateFont(fontName, fontSize, isBold, isItalic, isOblique, isSmallCaps);
}
}
void CanvasRenderingContext2D::set_textAlign(const std::string& textAlign)
{
// SE_LOGD("CanvasRenderingContext2D::set_textAlign: %s\n", textAlign.c_str());
if (textAlign == "left")
{
_impl->setTextAlign(CanvasTextAlign::LEFT);
}
else if (textAlign == "center" || textAlign == "middle")
{
_impl->setTextAlign(CanvasTextAlign::CENTER);
}
else if (textAlign == "right")
{
_impl->setTextAlign(CanvasTextAlign::RIGHT);
}
else
{
assert(false);
}
}
void CanvasRenderingContext2D::set_textBaseline(const std::string& textBaseline)
{
// SE_LOGD("CanvasRenderingContext2D::set_textBaseline: %s\n", textBaseline.c_str());
if (textBaseline == "top")
{
_impl->setTextBaseline(CanvasTextBaseline::TOP);
}
else if (textBaseline == "middle")
{
_impl->setTextBaseline(CanvasTextBaseline::MIDDLE);
}
else if (textBaseline == "bottom" || textBaseline == "alphabetic") //REFINE:, how to deal with alphabetic, currently we handle it as bottom mode.
{
_impl->setTextBaseline(CanvasTextBaseline::BOTTOM);
}
else
{
assert(false);
}
}
void CanvasRenderingContext2D::set_fillStyle(const std::string& fillStyle)
{
CSSColorParser::Color color = CSSColorParser::parse(fillStyle);
_impl->setFillStyle(color.r/255.0f, color.g/255.0f, color.b/255.0f, color.a);
// SE_LOGD("CanvasRenderingContext2D::set_fillStyle: %s, (%d, %d, %d, %f)\n", fillStyle.c_str(), color.r, color.g, color.b, color.a);
}
void CanvasRenderingContext2D::set_strokeStyle(const std::string& strokeStyle)
{
CSSColorParser::Color color = CSSColorParser::parse(strokeStyle);
_impl->setStrokeStyle(color.r/255.0f, color.g/255.0f, color.b/255.0f, color.a);
}
void CanvasRenderingContext2D::set_globalCompositeOperation(const std::string& globalCompositeOperation)
{
// SE_LOGE("%s isn't implemented!\n", __FUNCTION__);
}
void CanvasRenderingContext2D::_fillImageData(const Data& imageData, float imageWidth, float imageHeight, float offsetX, float offsetY)
{
_impl->_fillImageData(imageData, imageWidth, imageHeight, offsetX, offsetY);
if (_canvasBufferUpdatedCB != nullptr)
_canvasBufferUpdatedCB(_impl->getDataRef());
}
// transform
//REFINE:
void CanvasRenderingContext2D::translate(float x, float y)
{
// SE_LOGE("%s isn't implemented!\n", __FUNCTION__);
}
void CanvasRenderingContext2D::scale(float x, float y)
{
// SE_LOGE("%s isn't implemented!\n", __FUNCTION__);
}
void CanvasRenderingContext2D::rotate(float angle)
{
// SE_LOGE("%s isn't implemented!\n", __FUNCTION__);
}
void CanvasRenderingContext2D::transform(float a, float b, float c, float d, float e, float f)
{
// SE_LOGE("%s isn't implemented!\n", __FUNCTION__);
}
void CanvasRenderingContext2D::setTransform(float a, float b, float c, float d, float e, float f)
{
// SE_LOGE("%s isn't implemented!\n", __FUNCTION__);
}
NS_CC_END