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cocos/platform/interfaces/modules/canvas/CanvasRenderingContext2D.cpp Normal file
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/****************************************************************************
Copyright (c) 2021-2023 Xiamen Yaji Software Co., Ltd.
http://www.cocos.com
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#include "platform/interfaces/modules/canvas/CanvasRenderingContext2D.h"
#include <cstdint>
#include <regex>
#include "base/csscolorparser.h"
#include "cocos/bindings/jswrapper/SeApi.h"
#include "cocos/bindings/manual/jsb_platform.h"
#include "math/Math.h"
#include "platform/FileUtils.h"
#if defined(CC_SERVER_MODE)
#include "platform/empty/modules/CanvasRenderingContext2DDelegate.h"
#elif (CC_PLATFORM == CC_PLATFORM_WINDOWS)
#include "platform/win32/modules/CanvasRenderingContext2DDelegate.h"
#elif (CC_PLATFORM == CC_PLATFORM_ANDROID || CC_PLATFORM == CC_PLATFORM_OHOS)
#include "platform/java/modules/CanvasRenderingContext2DDelegate.h"
#elif (CC_PLATFORM == CC_PLATFORM_MACOS || CC_PLATFORM == CC_PLATFORM_IOS)
#include "platform/apple/modules/CanvasRenderingContext2DDelegate.h"
#elif (CC_PLATFORM == CC_PLATFORM_LINUX)
#include "platform/linux/modules/CanvasRenderingContext2DDelegate.h"
#elif (CC_PLATFORM == CC_PLATFORM_QNX)
#include "platform/qnx/modules/CanvasRenderingContext2DDelegate.h"
#elif (CC_PLATFORM == CC_PLATFORM_OPENHARMONY)
#include "platform/openharmony/modules/CanvasRenderingContext2DDelegate.h"
#endif
using Vec2 = ccstd::array<float, 2>;
using Color4F = ccstd::array<float, 4>;
namespace cc {
//using Size = ccstd::array<float, 2>;
CanvasGradient::CanvasGradient() = default;
CanvasGradient::~CanvasGradient() = default;
void CanvasGradient::addColorStop(float offset, const ccstd::string &color) {
//SE_LOGD("CanvasGradient::addColorStop: %p\n", this);
}
// CanvasRenderingContext2D
CanvasRenderingContext2D::CanvasRenderingContext2D(float width, float height)
: _width(width),
_height(height) {
_delegate = ccnew CanvasRenderingContext2DDelegate();
//SE_LOGD("CanvasRenderingContext2D constructor: %p, width: %f, height: %f\n", this, width, height);
}
CanvasRenderingContext2D::~CanvasRenderingContext2D() {
delete _delegate;
}
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();
_delegate->clearRect(x, y, width, height);
}
void CanvasRenderingContext2D::fillRect(float x, float y, float width, float height) {
recreateBufferIfNeeded();
_delegate->fillRect(x, y, width, height);
}
void CanvasRenderingContext2D::fillText(const ccstd::string &text, float x, float y, float maxWidth) {
//SE_LOGD("CanvasRenderingContext2D::fillText: %s, offset: (%f, %f), %f\n", text.c_str(), x, y, maxWidth);
if (text.empty()) {
return;
}
recreateBufferIfNeeded();
_delegate->fillText(text, x, y, maxWidth);
}
void CanvasRenderingContext2D::strokeText(const ccstd::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();
_delegate->strokeText(text, x, y, maxWidth);
}
cc::Size CanvasRenderingContext2D::measureText(const ccstd::string &text) {
//SE_LOGD("CanvasRenderingContext2D::measureText: %s\n", text.c_str());
auto s = _delegate->measureText(text);
return cc::Size(s[0], s[1]);
}
ICanvasGradient *CanvasRenderingContext2D::createLinearGradient(float /*x0*/, float /*y0*/, float /*x1*/, float /*y1*/) {
return nullptr;
}
void CanvasRenderingContext2D::save() {
//SE_LOGD("CanvasRenderingContext2D::save\n");
_delegate->saveContext();
}
void CanvasRenderingContext2D::beginPath() {
//SE_LOGD("\n-----------begin------------------\nCanvasRenderingContext2D::beginPath\n");
recreateBufferIfNeeded();
_delegate->beginPath();
}
void CanvasRenderingContext2D::closePath() {
//SE_LOGD("CanvasRenderingContext2D::closePath\n");
_delegate->closePath();
}
void CanvasRenderingContext2D::moveTo(float x, float y) {
//SE_LOGD("CanvasRenderingContext2D::moveTo\n");
_delegate->moveTo(x, y);
}
void CanvasRenderingContext2D::lineTo(float x, float y) {
//SE_LOGD("CanvasRenderingContext2D::lineTo\n");
_delegate->lineTo(x, y);
}
void CanvasRenderingContext2D::stroke() {
//SE_LOGD("CanvasRenderingContext2D::stroke\n");
recreateBufferIfNeeded();
_delegate->stroke();
}
void CanvasRenderingContext2D::restore() {
//SE_LOGD("CanvasRenderingContext2D::restore\n");
_delegate->restoreContext();
}
void CanvasRenderingContext2D::setCanvasBufferUpdatedCallback(const CanvasBufferUpdatedCallback &cb) {
_canvasBufferUpdatedCB = cb;
}
void CanvasRenderingContext2D::fetchData() {
recreateBufferIfNeeded();
_delegate->updateData();
if (_canvasBufferUpdatedCB != nullptr) {
_canvasBufferUpdatedCB(_delegate->getDataRef());
}
}
void CanvasRenderingContext2D::setWidth(float width) {
//SE_LOGD("CanvasRenderingContext2D::set__width: %f\n", width);
if (math::isEqualF(width, _width)) return;
_width = width;
_isBufferSizeDirty = true;
}
void CanvasRenderingContext2D::setHeight(float height) {
//SE_LOGD("CanvasRenderingContext2D::set__height: %f\n", height);
if (math::isEqualF(height, _height)) return;
_height = height;
_isBufferSizeDirty = true;
}
void CanvasRenderingContext2D::setLineWidth(float lineWidth) {
//SE_LOGD("CanvasRenderingContext2D::set_lineWidth %d\n", lineWidth);
_lineWidth = lineWidth;
_delegate->setLineWidth(lineWidth);
}
void CanvasRenderingContext2D::setLineCap(const ccstd::string &lineCap) {
//SE_LOGE("%s isn't implemented!\n", __FUNCTION__);
#if CC_PLATFORM == CC_PLATFORM_WINDOWS
#elif CC_PLATFORM == CC_PLATFORM_ANDROID
if (lineCap.empty()) return;
_delegate->setLineCap(lineCap);
#endif
}
void CanvasRenderingContext2D::setLineJoin(const ccstd::string &lineJoin) {
//SE_LOGE("%s isn't implemented!\n", __FUNCTION__);
_delegate->setLineJoin(lineJoin);
}
void CanvasRenderingContext2D::fill() {
// SE_LOGE("%s isn't implemented!\n", __FUNCTION__);
#if CC_PLATFORM == CC_PLATFORM_WINDOWS
#elif CC_PLATFORM == CC_PLATFORM_ANDROID
_delegate->fill();
#endif
}
void CanvasRenderingContext2D::rect(float x, float y, float w, float h) {
recreateBufferIfNeeded();
#if CC_PLATFORM == CC_PLATFORM_WINDOWS
// SE_LOGE("%s isn't implemented!\n", __FUNCTION__);
#elif CC_PLATFORM == CC_PLATFORM_ANDROID
// SE_LOGD("CanvasRenderingContext2D::rect: %p, %f, %f, %f, %f\n", this, x, y, width, height);
_delegate->rect(x, y, w, h);
#endif
}
void CanvasRenderingContext2D::setFont(const ccstd::string &font) {
recreateBufferIfNeeded();
#if CC_PLATFORM == CC_PLATFORM_WINDOWS
if (_font != font) {
_font = font;
ccstd::string boldStr;
ccstd::string fontName = "Arial";
ccstd::string fontSizeStr = "30";
std::regex re(R"(\s*((\d+)([\.]\d+)?)px\s+([^\r\n]*))");
std::match_results<ccstd::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 Arial
std::match_results<ccstd::string::const_iterator> fontResults;
std::regex fontRe(R"(([\w\s-]+|"[\w\s-]+"$))");
ccstd::string tmp(results[4].str());
if (std::regex_match(tmp, fontResults, fontRe)) {
fontName = results[4].str();
}
}
auto fontSize = static_cast<float>(atof(fontSizeStr.c_str()));
bool isBold = !boldStr.empty() || font.find("bold", 0) != ccstd::string::npos || font.find("Bold", 0) != ccstd::string::npos;
bool isItalic = font.find("italic", 0) != ccstd::string::npos || font.find("Italic", 0) != ccstd::string::npos;
_delegate->updateFont(fontName, static_cast<float>(fontSize), isBold, isItalic, false, false);
}
#elif CC_PLATFORM == CC_PLATFORM_QNX
if (_font != font) {
_font = font;
ccstd::string boldStr;
ccstd::string fontName = "Arial";
ccstd::string fontSizeStr = "30";
// support get font name from `60px American` or `60px "American abc-abc_abc"`
std::regex re("(bold)?\\s*((\\d+)([\\.]\\d+)?)px\\s+([\\w-]+|\"[\\w -]+\"$)");
std::match_results<ccstd::string::const_iterator> results;
if (std::regex_search(_font.cbegin(), _font.cend(), results, re)) {
boldStr = results[1].str();
fontSizeStr = results[2].str();
fontName = results[5].str();
}
bool isItalic = font.find("italic", 0) != ccstd::string::npos || font.find("Italic", 0) != ccstd::string::npos;
auto fontSize = static_cast<float>(atof(fontSizeStr.c_str()));
bool isBold = !boldStr.empty() || font.find("bold", 0) != ccstd::string::npos || font.find("Bold", 0) != ccstd::string::npos;
//SE_LOGD("CanvasRenderingContext2D::set_font: %s, Size: %f, isBold: %b\n", fontName.c_str(), fontSize, isBold);
_delegate->updateFont(fontName, fontSize, isBold, isItalic, false, false);
}
#elif CC_PLATFORM == CC_PLATFORM_LINUX
if (_font != font) {
_font = font;
ccstd::string fontName = "sans-serif";
ccstd::string fontSizeStr = "30";
std::regex re(R"(\s*((\d+)([\.]\d+)?)px\s+([^\r\n]*))");
std::match_results<ccstd::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<ccstd::string::const_iterator> fontResults;
std::regex fontRe(R"(([\w\s-]+|"[\w\s-]+"$))");
ccstd::string tmp(results[4].str());
if (std::regex_match(tmp, fontResults, fontRe)) {
//fontName = results[4].str();
}
}
bool isBold = font.find("bold", 0) != ccstd::string::npos || font.find("Bold", 0) != ccstd::string::npos;
bool isItalic = font.find("italic", 0) != ccstd::string::npos || font.find("Italic", 0) != ccstd::string::npos;
float fontSize = static_cast<float>(atof(fontSizeStr.c_str()));
//SE_LOGD("CanvasRenderingContext2D::set_font: %s, Size: %f, isBold: %b\n", fontName.c_str(), fontSize, isBold);
_delegate->updateFont(fontName, fontSize, isBold, isItalic, false, false);
}
#elif CC_PLATFORM == CC_PLATFORM_ANDROID || CC_PLATFORM == CC_PLATFORM_OHOS || CC_PLATFORM == CC_PLATFORM_OPENHARMONY
if (_font != font) {
_font = font;
ccstd::string fontName = "sans-serif";
ccstd::string fontSizeStr = "30";
std::regex re(R"(\s*((\d+)([\.]\d+)?)px\s+([^\r\n]*))");
std::match_results<ccstd::string::const_iterator> results;
if (std::regex_search(_font.cbegin(), _font.cend(), results, re)) {
fontSizeStr = results[2].str();
// support get font name from `60px American` or `60px "American abc-abc_abc"`
// support get font name contain space,example `times new roman`
// if regex rule that does not conform to the rules,such as Chinese,it defaults to sans-serif
std::match_results<ccstd::string::const_iterator> fontResults;
std::regex fontRe(R"(([\w\s-]+|"[\w\s-]+"$))");
ccstd::string tmp(results[4].str());
if (std::regex_match(tmp, fontResults, fontRe)) {
fontName = results[4].str();
}
}
double fontSize = atof(fontSizeStr.c_str());
bool isBold = font.find("bold", 0) != ccstd::string::npos || font.find("Bold", 0) != ccstd::string::npos;
bool isItalic = font.find("italic", 0) != ccstd::string::npos || font.find("Italic", 0) != ccstd::string::npos;
bool isSmallCaps = font.find("small-caps", 0) != ccstd::string::npos || font.find("Small-Caps") != ccstd::string::npos;
bool isOblique = font.find("oblique", 0) != ccstd::string::npos || font.find("Oblique", 0) != ccstd::string::npos;
//font-style: italic, oblique, normal
//font-weight: normal, bold
//font-variant: normal, small-caps
_delegate->updateFont(fontName, static_cast<float>(fontSize), isBold, isItalic, isOblique, isSmallCaps);
}
#elif CC_PLATFORM == CC_PLATFORM_MACOS || CC_PLATFORM == CC_PLATFORM_IOS
if (_font != font) {
_font = font;
ccstd::string boldStr;
ccstd::string fontName = "Arial";
ccstd::string fontSizeStr = "30";
bool isItalic = font.find("italic", 0) != ccstd::string::npos || font.find("Italic", 0) != ccstd::string::npos;
// support get font name from `60px American` or `60px "American abc-abc_abc"`
std::regex re("(bold)?\\s*((\\d+)([\\.]\\d+)?)px\\s+([\\w-]+|\"[\\w -]+\"$)");
std::match_results<ccstd::string::const_iterator> results;
if (std::regex_search(_font.cbegin(), _font.cend(), results, re)) {
boldStr = results[1].str();
fontSizeStr = results[2].str();
fontName = results[5].str();
}
float fontSize = atof(fontSizeStr.c_str());
bool isBold = !boldStr.empty() || font.find("bold", 0) != ccstd::string::npos || font.find("Bold", 0) != ccstd::string::npos;
_delegate->updateFont(fontName, static_cast<float>(fontSize), isBold, isItalic, false, false);
}
#endif
}
void CanvasRenderingContext2D::setTextAlign(const ccstd::string &textAlign) {
//SE_LOGD("CanvasRenderingContext2D::set_textAlign: %s\n", textAlign.c_str());
if (textAlign == "left") {
_delegate->setTextAlign(TextAlign::LEFT);
} else if (textAlign == "center" || textAlign == "middle") {
_delegate->setTextAlign(TextAlign::CENTER);
} else if (textAlign == "right") {
_delegate->setTextAlign(TextAlign::RIGHT);
} else {
CC_ABORT();
}
}
void CanvasRenderingContext2D::setTextBaseline(const ccstd::string &textBaseline) {
//SE_LOGD("CanvasRenderingContext2D::set_textBaseline: %s\n", textBaseline.c_str());
if (textBaseline == "top") {
_delegate->setTextBaseline(TextBaseline::TOP);
} else if (textBaseline == "middle") {
_delegate->setTextBaseline(TextBaseline::MIDDLE);
} else if (textBaseline == "bottom") //REFINE:, how to deal with alphabetic, currently we handle it as bottom mode.
{
_delegate->setTextBaseline(TextBaseline::BOTTOM);
} else if (textBaseline == "alphabetic") {
_delegate->setTextBaseline(TextBaseline::ALPHABETIC);
} else {
CC_ABORT();
}
}
void CanvasRenderingContext2D::setFillStyle(const ccstd::string &fillStyle) {
CSSColorParser::Color color = CSSColorParser::parse(fillStyle);
_delegate->setFillStyle(color.r, color.g, color.b, static_cast<uint8_t>(color.a * 255));
//SE_LOGD("CanvasRenderingContext2D::set_fillStyle: %s, (%d, %d, %d, %f)\n", fillStyle.c_str(), color.r, color.g, color.b, color.a);
}
void CanvasRenderingContext2D::setStrokeStyle(const ccstd::string &strokeStyle) {
CSSColorParser::Color color = CSSColorParser::parse(strokeStyle);
_delegate->setStrokeStyle(color.r, color.g, color.b, static_cast<uint8_t>(color.a * 255));
}
void CanvasRenderingContext2D::setShadowBlur(float blur) {
_delegate->setShadowBlur(blur);
}
void CanvasRenderingContext2D::setShadowColor(const ccstd::string &shadowColor) {
CSSColorParser::Color color = CSSColorParser::parse(shadowColor);
_delegate->setShadowColor(color.r, color.g, color.b, static_cast<uint8_t>(color.a * 255));
}
void CanvasRenderingContext2D::setShadowOffsetX(float offsetX) {
_delegate->setShadowOffsetX(offsetX);
}
void CanvasRenderingContext2D::setShadowOffsetY(float offsetY) {
_delegate->setShadowOffsetY(offsetY);
}
void CanvasRenderingContext2D::setGlobalCompositeOperation(const ccstd::string &globalCompositeOperation) {
//SE_LOGE("%s isn't implemented!\n", __FUNCTION__);
}
void CanvasRenderingContext2D::fillImageData(const Data &imageData, float imageWidth, float imageHeight, float offsetX, float offsetY) {
recreateBufferIfNeeded();
//SE_LOGE("%s isn't implemented!\n", __FUNCTION__);
#if CC_PLATFORM == CC_PLATFORM_WINDOWS
#elif CC_PLATFORM == CC_PLATFORM_ANDROID
_delegate->fillImageData(imageData, imageWidth, imageHeight, offsetX, offsetY);
#endif
}
// 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__);
}
void CanvasRenderingContext2D::recreateBufferIfNeeded() {
if (_isBufferSizeDirty) {
_isBufferSizeDirty = false;
//SE_LOGD("Recreate buffer %p, w: %f, h:%f\n", this, __width, __height);
_delegate->recreateBuffer(_width, _height);
}
}
} // namespace cc

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/****************************************************************************
Copyright (c) 2018-2023 Xiamen Yaji Software Co., Ltd.
http://www.cocos.com
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#pragma once
#include "platform/interfaces/modules/canvas/ICanvasRenderingContext2D.h"
namespace cc {
class CC_DLL CanvasGradient : public ICanvasGradient {
public:
CanvasGradient();
~CanvasGradient() override; // NOLINT(performance-trivially-destructible)
void addColorStop(float offset, const ccstd::string &color) override;
};
class CC_DLL CanvasRenderingContext2D : public ICanvasRenderingContext2D {
public:
CanvasRenderingContext2D(float width, float height);
~CanvasRenderingContext2D() override;
// Rect
void rect(float x, float y, float width, float height) override;
void clearRect(float x, float y, float width, float height) override;
void fillRect(float x, float y, float width, float height) override;
void fillText(const ccstd::string &text, float x, float y, float maxWidth) override;
void strokeText(const ccstd::string &text, float x, float y, float maxWidth) override;
Size measureText(const ccstd::string &text) override;
ICanvasGradient *createLinearGradient(float x0, float y0, float x1, float y1) override;
void save() override;
// Paths
void beginPath() override;
void closePath() override;
void moveTo(float x, float y) override;
void lineTo(float x, float y) override;
void fill() override;
void stroke() override;
void restore() override;
// callback
using CanvasBufferUpdatedCallback = std::function<void(const cc::Data &)>;
void setCanvasBufferUpdatedCallback(const CanvasBufferUpdatedCallback &cb) override;
void fetchData() override;
// functions for properties
void setWidth(float width) override;
void setHeight(float height) override;
void setLineWidth(float lineWidth) override;
void setLineJoin(const ccstd::string &lineJoin) override;
void setLineCap(const ccstd::string &lineCap) override;
void setFont(const ccstd::string &font) override;
void setTextAlign(const ccstd::string &textAlign) override;
void setTextBaseline(const ccstd::string &textBaseline) override;
void setFillStyle(const ccstd::string &fillStyle) override;
void setStrokeStyle(const ccstd::string &strokeStyle) override;
void setGlobalCompositeOperation(const ccstd::string &globalCompositeOperation) override;
void setShadowBlur(float blur) override;
void setShadowColor(const ccstd::string &shadowColor) override;
void setShadowOffsetX(float offsetX) override;
void setShadowOffsetY(float offsetY) override;
// fill image data into Context2D
void fillImageData(const Data &imageData, float imageWidth, float imageHeight, float offsetX, float offsetY) override;
// transform
void translate(float x, float y) override;
void scale(float x, float y) override;
void rotate(float angle) override;
void transform(float a, float b, float c, float d, float e, float f) override;
void setTransform(float a, float b, float c, float d, float e, float f) override;
private:
void recreateBufferIfNeeded() override;
public:
float _width = 0.0F;
float _height = 0.0F;
// Line styles
float _lineWidth = 1.0F;
ccstd::string _lineJoin = "miter";
ccstd::string _lineCap = "butt";
// Text styles
ccstd::string _font = "10px sans-serif";
ccstd::string _textAlign = "start";
ccstd::string _textBaseline = "alphabetic";
// Fill and stroke styles
ccstd::string _fillStyle = "#000";
ccstd::string _strokeStyle = "#000";
// Compositing
ccstd::string _globalCompositeOperation = "source-over";
private:
ICanvasRenderingContext2D::Delegate *_delegate;
CanvasBufferUpdatedCallback _canvasBufferUpdatedCB = nullptr;
bool _isBufferSizeDirty = true;
};
} // namespace cc

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/****************************************************************************
Copyright (c) 2018-2023 Xiamen Yaji Software Co., Ltd.
http://www.cocos.com
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#pragma once
#include "base/Data.h"
#include "base/std/container/array.h"
#include "base/std/container/string.h"
#include "math/Geometry.h"
#include "platform/interfaces/OSInterface.h"
namespace cc {
class CC_DLL ICanvasGradient {
public:
ICanvasGradient() = default;
virtual ~ICanvasGradient() = default; // NOLINT(performance-trivially-destructible)
virtual void addColorStop(float offset, const ccstd::string &color) = 0;
};
class CC_DLL ICanvasRenderingContext2D : public OSInterface {
public:
enum class TextAlign {
LEFT,
CENTER,
RIGHT
};
enum class TextBaseline {
TOP,
MIDDLE,
BOTTOM,
ALPHABETIC
};
class Delegate {
public:
using Size = ccstd::array<float, 2>;
virtual ~Delegate() = default;
virtual void recreateBuffer(float w, float h) = 0;
virtual void beginPath() = 0;
virtual void closePath() = 0;
virtual void moveTo(float x, float y) = 0;
virtual void lineTo(float x, float y) = 0;
virtual void stroke() = 0;
virtual void saveContext() = 0;
virtual void restoreContext() = 0;
virtual void clearRect(float /*x*/, float /*y*/, float w, float h) = 0;
virtual void fill() = 0;
virtual void rect(float x, float y, float w, float h) = 0;
virtual void setLineCap(const ccstd::string &lineCap) = 0;
virtual void setLineJoin(const ccstd::string &lineCap) = 0;
virtual void fillImageData(const Data &imageData, float imageWidth, float imageHeight, float offsetX, float offsetY) = 0;
virtual void fillRect(float x, float y, float w, float h) = 0;
virtual void fillText(const ccstd::string &text, float x, float y, float /*maxWidth*/) = 0;
virtual void strokeText(const ccstd::string &text, float /*x*/, float /*y*/, float /*maxWidth*/) = 0;
virtual Size measureText(const ccstd::string &text) = 0;
virtual void updateFont(const ccstd::string &fontName, float fontSize, bool bold, bool italic, bool oblique, bool smallCaps) = 0;
virtual void setTextAlign(TextAlign align) = 0;
virtual void setTextBaseline(TextBaseline baseline) = 0;
virtual void setFillStyle(uint8_t r, uint8_t g, uint8_t b, uint8_t a) = 0;
virtual void setStrokeStyle(uint8_t r, uint8_t g, uint8_t b, uint8_t a) = 0;
virtual void setLineWidth(float lineWidth) = 0;
virtual void setShadowBlur(float blur) = 0;
virtual void setShadowColor(uint8_t r, uint8_t g, uint8_t b, uint8_t a) = 0;
virtual void setShadowOffsetX(float offsetX) = 0;
virtual void setShadowOffsetY(float offsetY) = 0;
virtual const cc::Data &getDataRef() const = 0;
virtual void updateData() = 0;
};
//static OSInterface::Ptr getInterface();
// Rect
virtual void rect(float x, float y, float width, float height) = 0;
virtual void clearRect(float x, float y, float width, float height) = 0;
virtual void fillRect(float x, float y, float width, float height) = 0;
virtual void fillText(const ccstd::string &text, float x, float y, float maxWidth) = 0;
virtual void strokeText(const ccstd::string &text, float x, float y, float maxWidth) = 0;
virtual Size measureText(const ccstd::string &text) = 0;
virtual ICanvasGradient *createLinearGradient(float x0, float y0, float x1, float y1) = 0;
virtual void save() = 0;
// Paths
virtual void beginPath() = 0;
virtual void closePath() = 0;
virtual void moveTo(float x, float y) = 0;
virtual void lineTo(float x, float y) = 0;
virtual void fill() = 0;
virtual void stroke() = 0;
virtual void restore() = 0;
// callback
using CanvasBufferUpdatedCallback = std::function<void(const cc::Data &)>;
virtual void setCanvasBufferUpdatedCallback(const CanvasBufferUpdatedCallback &cb) = 0;
// functions for properties
virtual void setWidth(float width) = 0;
virtual void setHeight(float height) = 0;
virtual void setLineWidth(float lineWidth) = 0;
virtual void setLineJoin(const ccstd::string &lineJoin) = 0;
virtual void setLineCap(const ccstd::string &lineCap) = 0;
virtual void setFont(const ccstd::string &font) = 0;
virtual void setTextAlign(const ccstd::string &textAlign) = 0;
virtual void setTextBaseline(const ccstd::string &textBaseline) = 0;
virtual void setFillStyle(const ccstd::string &fillStyle) = 0;
virtual void setStrokeStyle(const ccstd::string &strokeStyle) = 0;
virtual void setGlobalCompositeOperation(const ccstd::string &globalCompositeOperation) = 0;
virtual void setShadowBlur(float blur) = 0;
virtual void setShadowColor(const ccstd::string &shadowColor) = 0;
virtual void setShadowOffsetX(float offsetX) = 0;
virtual void setShadowOffsetY(float offsetY) = 0;
// fill image data into Context2D
virtual void fillImageData(const Data &imageData, float imageWidth, float imageHeight, float offsetX, float offsetY) = 0;
// transform
virtual void translate(float x, float y) = 0;
virtual void scale(float x, float y) = 0;
virtual void rotate(float angle) = 0;
virtual void transform(float a, float b, float c, float d, float e, float f) = 0;
virtual void setTransform(float a, float b, float c, float d, float e, float f) = 0;
virtual void fetchData() = 0;
private:
virtual void recreateBufferIfNeeded() = 0;
};
} // namespace cc