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cocos-engine/native/cocos/platform/linux/modules/CanvasRenderingContext2DDelegate.cpp
qiuguohua b6af1ada02 V3.5.0 create window (#10481) 
* 1. Modify the parameters of the creation window
2. Modify the relationship between platform and interface
3. Rename vibrate to vibrator in linux and QNX

* Fix empty platform implementation

* Fix empty platform implementation

* Modify mac and ios createwindow interface

* Create a centered window by default

* Mobile platforms do not require window creation
2022-03-25 18:43:17 +08:00

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/****************************************************************************
Copyright (c) 2021-2022 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 engine source code (the "Software"), a limited,
worldwide, royalty-free, non-assignable, revocable and non-exclusive license
to use Cocos Creator solely to develop games on your target platforms. You shall
not use Cocos Creator software for developing other software or tools that's
used for developing games. You are not granted to publish, distribute,
sublicense, and/or sell copies of Cocos Creator.
The software or tools in this License Agreement are licensed, not sold.
Xiamen Yaji Software Co., Ltd. reserves all rights not expressly granted to you.
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/linux/modules/CanvasRenderingContext2DDelegate.h"
#include "platform/linux/LinuxPlatform.h"
#include "platform/linux/modules/SystemWindow.h"
namespace {
#define RGB(r, g, b) (int)((int)r | (((int)g) << 8) | (((int)b) << 16))
#define RGBA(r, g, b, a) (int)((int)r | (((int)g) << 8) | (((int)b) << 16) | (((int)a) << 24))
} // namespace
namespace cc {
//static const char gdefaultFontName[] = "-*-helvetica-medium-o-*-*-24-*-*-*-*-*-iso8859-*";
//static const char gdefaultFontName[] = "lucidasanstypewriter-bold-24";
static const char gdefaultFontName[] = "lucidasans-24";
CanvasRenderingContext2DDelegate::CanvasRenderingContext2DDelegate() {
SystemWindow* window = BasePlatform::getPlatform()->getInterface<SystemWindow>();
CCASSERT(window != nullptr, "System window is not registered");
_dis = reinterpret_cast<Display*>(window->getDisplay());
_win = reinterpret_cast<Drawable>(window->getWindowHandler());
}
CanvasRenderingContext2DDelegate::~CanvasRenderingContext2DDelegate() {
XFreePixmap(_dis, _pixmap);
XFreeGC(_dis, _gc);
}
void CanvasRenderingContext2DDelegate::recreateBuffer(float w, float h) {
_bufferWidth = w;
_bufferHeight = h;
if (_bufferWidth < 1.0F || _bufferHeight < 1.0F) {
return;
}
auto textureSize = static_cast<int>(_bufferWidth * _bufferHeight * 4);
auto *data = static_cast<int8_t *>(malloc(sizeof(int8_t) * textureSize));
memset(data, 0x00, textureSize);
_imageData.fastSet((uint8_t *)data, textureSize);
if (_pixmap) {
XFreePixmap(_dis, _pixmap);
_pixmap = 0;
}
if (!_win) {
return;
}
//Screen *scr = DefaultScreenOfDisplay(_dis);
_pixmap = XCreatePixmap(_dis, _win, w, h, 32);
_gc = XCreateGC(_dis, _pixmap, 0, 0);
}
void CanvasRenderingContext2DDelegate::beginPath() {
// called: set_lineWidth() -> beginPath() -> moveTo() -> lineTo() -> stroke(), when draw line
XSetLineAttributes(_dis, _gc, static_cast<int>(_lineWidth), LineSolid, _lineCap, _lineJoin);
XSetForeground(_dis, _gc, RGB(255, 255, 255));
}
void CanvasRenderingContext2DDelegate::closePath() {
}
void CanvasRenderingContext2DDelegate::moveTo(float x, float y) {
//MoveToEx(_DC, static_cast<int>(x), static_cast<int>(-(y - _bufferHeight - _fontSize)), nullptr);
_x = x;
_y = y;
}
void CanvasRenderingContext2DDelegate::lineTo(float x, float y) {
//LineTo(_DC, static_cast<int>(x), static_cast<int>(-(y - _bufferHeight - _fontSize)));
XDrawLine(_dis, _pixmap, _gc, _x, _y, x, y);
}
void CanvasRenderingContext2DDelegate::stroke() {
}
void CanvasRenderingContext2DDelegate::saveContext() {
}
void CanvasRenderingContext2DDelegate::restoreContext() {
}
void CanvasRenderingContext2DDelegate::clearRect(float x, float y, float w, float h) {
if (_bufferWidth < 1.0F || _bufferHeight < 1.0F) {
return;
}
if (_imageData.isNull()) {
return;
}
recreateBuffer(w, h);
}
void CanvasRenderingContext2DDelegate::fillRect(float x, float y, float w, float h) {
if (_bufferWidth < 1.0F || _bufferHeight < 1.0F) {
return;
}
XSetForeground(_dis, _gc, _fillStyle);
XFillRectangle(_dis, _pixmap, _gc, x, y, w, h);
}
void CanvasRenderingContext2DDelegate::fillText(const std::string &text, float x, float y, float /*maxWidth*/) {
if (text.empty() || _bufferWidth < 1.0F || _bufferHeight < 1.0F) {
return;
}
Point offsetPoint = convertDrawPoint(Point{x, y}, text);
XSetForeground(_dis, _gc, 0xff000000 | _fillStyle);
XSetFont(_dis, _gc, _font->fid);
XDrawString(_dis, _pixmap, _gc, offsetPoint[0], offsetPoint[1], text.c_str(), (int)(text.length()));
XImage * image = XGetImage(_dis, _pixmap, 0, 0, _bufferWidth, _bufferHeight, AllPlanes, ZPixmap);
int width = image->width;
int height = image->height;
unsigned char *data = _imageData.getBytes();
for (int y = 0; y < height; ++y) {
for (int x = 0; x < width; x++) {
*(((int *)data + (y * width) + x)) = static_cast<int>(XGetPixel(image, x, y));
}
}
}
void CanvasRenderingContext2DDelegate::strokeText(const std::string &text, float /*x*/, float /*y*/, float /*maxWidth*/) const {
if (text.empty() || _bufferWidth < 1.0F || _bufferHeight < 1.0F) {
return;
}
}
CanvasRenderingContext2DDelegate::Size CanvasRenderingContext2DDelegate::measureText(const std::string &text) {
if (text.empty())
return std::array<float, 2>{0.0f, 0.0f};
int font_ascent = 0;
int font_descent = 0;
int direction = 0;
XCharStruct overall;
XQueryTextExtents(_dis, _font->fid, text.c_str(), text.length(), &direction, &font_ascent, &font_descent, &overall);
return std::array<float, 2>{static_cast<float>(overall.width),
static_cast<float>(overall.ascent + overall.descent)};
}
void CanvasRenderingContext2DDelegate::updateFont(const std::string &fontName,
float fontSize,
bool bold,
bool italic,
bool oblique,
bool /* smallCaps */) {
do {
_fontName = fontName;
_fontSize = static_cast<int>(fontSize);
/// TODO(bug):Remove default settings
std::string fontName = "helvetica"; // default
char serv[1024] = {0};
std::string slant = "";
if (italic) {
slant = "*I";
} else if (oblique) {
slant = "*o";
}
// *name-bold*Italic(Oblique)*size
snprintf(serv, sizeof(serv) - 1, "*%s%s%s*--%d*", fontName.c_str(),
bold ? "*Bold" : "",
slant.c_str(),
_fontSize);
if (_font) {
XFreeFont(_dis, _font);
_font = 0;
}
_font = XLoadQueryFont(_dis, serv);
if (!_font) {
static int fontSizes[] = {8, 10, 12, 14, 18, 24};
int i = 0;
int size = sizeof(fontSizes) / sizeof(fontSizes[0]);
for (i = 0; i < size; ++i) {
if (_fontSize < fontSizes[i]) {
break;
}
}
if (i == 0) {
_fontSize = fontSizes[0];
} else if (i > 1 && i < size) {
_fontSize = fontSizes[i - 1];
} else {
_fontSize = fontSizes[size - 1];
}
snprintf(serv, sizeof(serv) - 1, "*%s*%d*", "lucidasans", _fontSize);
_font = XLoadQueryFont(_dis, serv);
if (!_font) {
_font = XLoadQueryFont(_dis, serv);
}
}
} while (false);
}
void CanvasRenderingContext2DDelegate::setTextAlign(CanvasTextAlign align) {
_textAlign = align;
}
void CanvasRenderingContext2DDelegate::setTextBaseline(CanvasTextBaseline baseline) {
_textBaseLine = baseline;
}
void CanvasRenderingContext2DDelegate::setFillStyle(float r, float g, float b, float a) {
_fillStyle = RGBA(r * 255, g * 255, b * 255, a * 255);
}
void CanvasRenderingContext2DDelegate::setStrokeStyle(float r, float g, float b, float a) {
_strokeStyle = RGBA(r * 255, g * 255, b * 255, a * 255);
}
void CanvasRenderingContext2DDelegate::setLineWidth(float lineWidth) {
_lineWidth = lineWidth;
}
const cc::Data &CanvasRenderingContext2DDelegate::getDataRef() const {
return _imageData;
}
void CanvasRenderingContext2DDelegate::removeCustomFont() {
XFreeFont(_dis, None);
}
// x, y offset value
int CanvasRenderingContext2DDelegate::drawText(const std::string &text, int x, int y) {
XTextItem item{const_cast<char *>(text.c_str()), static_cast<int>(text.length()), 0, None};
return XDrawText(_dis, _pixmap, _gc, x, y, &item, 1);
}
CanvasRenderingContext2DDelegate::Size CanvasRenderingContext2DDelegate::sizeWithText(const wchar_t *pszText, int nLen) {
// if (text.empty())
// return std::array<float, 2>{0.0f, 0.0f};
// XFontStruct *fs = XLoadQueryFont(dpy, "cursor");
// assert(fs);
// int font_ascent = 0;
// int font_descent = 0;
// XCharStruct overall;
// XQueryTextExtents(_dis, fs -> fid, text.c_str(), text.length(), nullptr, &font_ascent, &font_descent, &overall);
// return std::array<float, 2>{static_cast<float>(overall.lbearing),
// static_cast<float>(overall.rbearing)};
return std::array<float, 2>{0.0F, 0.0F};
}
void CanvasRenderingContext2DDelegate::prepareBitmap(int nWidth, int nHeight) {
}
void CanvasRenderingContext2DDelegate::deleteBitmap() {
}
void CanvasRenderingContext2DDelegate::fillTextureData() {
}
std::array<float, 2> CanvasRenderingContext2DDelegate::convertDrawPoint(Point point, const std::string &text) {
int font_ascent = 0;
int font_descent = 0;
int direction = 0;
XCharStruct overall;
XQueryTextExtents(_dis, _font->fid, text.c_str(), text.length(), &direction, &font_ascent, &font_descent, &overall);
int width = overall.width;
if (_textAlign == CanvasTextAlign::CENTER) {
point[0] -= width / 2.0f;
} else if (_textAlign == CanvasTextAlign::RIGHT) {
point[0] -= width;
}
if (_textBaseLine == CanvasTextBaseline::TOP) {
point[1] += overall.ascent;
} else if (_textBaseLine == CanvasTextBaseline::MIDDLE) {
point[1] += (overall.descent - overall.ascent) / 2 - overall.descent;
} else if (_textBaseLine == CanvasTextBaseline::BOTTOM) {
point[1] += -overall.descent;
} else if (_textBaseLine == CanvasTextBaseline::ALPHABETIC) {
//point[1] -= overall.ascent;
// X11 The default way of drawing text
}
return point;
}
void CanvasRenderingContext2DDelegate::fill() {
}
void CanvasRenderingContext2DDelegate::setLineCap(const std::string &lineCap) {
_lineCap = LineSolid;
}
void CanvasRenderingContext2DDelegate::setLineJoin(const std::string &lineJoin) {
_lineJoin = JoinRound;
}
void CanvasRenderingContext2DDelegate::fillImageData(const Data & /* imageData */,
float /* imageWidth */,
float /* imageHeight */,
float /* offsetX */,
float /* offsetY */) {
//XCreateImage(display, visual, DefaultDepth(display,DefaultScreen(display)), ZPixmap, 0, image32, width, height, 32, 0);
//XPutImage(dpy, w, gc, image, 0, 0, 50, 60, 40, 30);
}
void CanvasRenderingContext2DDelegate::strokeText(const std::string & /* text */,
float /* x */,
float /* y */,
float /* maxWidth */) {
}
void CanvasRenderingContext2DDelegate::rect(float /* x */,
float /* y */,
float /* w */,
float /* h */) {
}
} // namespace cc
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