/* * Copyright 2016 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "tools/window/unix/RasterWindowContext_unix.h" #include "include/core/SkSurface.h" #include "tools/window/RasterWindowContext.h" #include "tools/window/unix/XlibWindowInfo.h" #include using skwindow::DisplayParams; using skwindow::internal::RasterWindowContext; namespace { class RasterWindowContext_xlib : public RasterWindowContext { public: RasterWindowContext_xlib( Display*, XWindow, int width, int height, std::unique_ptr); sk_sp getBackbufferSurface() override; bool isValid() override { return SkToBool(fWindow); } void resize(int w, int h) override; void setDisplayParams(std::unique_ptr params) override; protected: void onSwapBuffers() override; sk_sp fBackbufferSurface; Display* fDisplay; XWindow fWindow; GC fGC; }; RasterWindowContext_xlib::RasterWindowContext_xlib(Display* display, XWindow window, int width, int height, std::unique_ptr params) : RasterWindowContext(std::move(params)), fDisplay(display), fWindow(window) { fGC = XCreateGC(fDisplay, fWindow, 0, nullptr); this->resize(width, height); fWidth = width; fHeight = height; } void RasterWindowContext_xlib::setDisplayParams(std::unique_ptr params) { fDisplayParams = std::move(params); XWindowAttributes attrs; XGetWindowAttributes(fDisplay, fWindow, &attrs); this->resize(attrs.width, attrs.height); } void RasterWindowContext_xlib::resize(int w, int h) { SkImageInfo info = SkImageInfo::Make( w, h, fDisplayParams->colorType(), kPremul_SkAlphaType, fDisplayParams->colorSpace()); fBackbufferSurface = SkSurfaces::Raster(info, &fDisplayParams->surfaceProps()); } sk_sp RasterWindowContext_xlib::getBackbufferSurface() { return fBackbufferSurface; } void RasterWindowContext_xlib::onSwapBuffers() { SkPixmap pm; if (!fBackbufferSurface->peekPixels(&pm)) { return; } int bitsPerPixel = pm.info().bytesPerPixel() * 8; XImage image; memset(&image, 0, sizeof(image)); image.width = pm.width(); image.height = pm.height(); image.format = ZPixmap; image.data = (char*) pm.writable_addr(); image.byte_order = LSBFirst; image.bitmap_unit = bitsPerPixel; image.bitmap_bit_order = LSBFirst; image.bitmap_pad = bitsPerPixel; image.depth = 24; image.bytes_per_line = pm.rowBytes() - pm.width() * pm.info().bytesPerPixel(); image.bits_per_pixel = bitsPerPixel; if (!XInitImage(&image)) { return; } XPutImage(fDisplay, fWindow, fGC, &image, 0, 0, 0, 0, pm.width(), pm.height()); } } // anonymous namespace namespace skwindow { std::unique_ptr MakeRasterForXlib(const XlibWindowInfo& info, std::unique_ptr params) { std::unique_ptr ctx(new RasterWindowContext_xlib( info.fDisplay, info.fWindow, info.fWidth, info.fHeight, std::move(params))); if (!ctx->isValid()) { ctx = nullptr; } return ctx; } } // namespace skwindow