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Unified Diff: tools/viewer/sk_app/unix/RasterWindowContext_unix.cpp

Issue 2165813002: Add sw support to viewer on Linux. (Closed) Base URL: https://chromium.googlesource.com/skia.git@master
Patch Set: rebase Created 4 years, 5 months ago
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Index: tools/viewer/sk_app/unix/RasterWindowContext_unix.cpp
diff --git a/tools/viewer/sk_app/unix/RasterWindowContext_unix.cpp b/tools/viewer/sk_app/unix/RasterWindowContext_unix.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..aaf1712be0f285c4ec1ba959f247a5609e7cb2c1
--- /dev/null
+++ b/tools/viewer/sk_app/unix/RasterWindowContext_unix.cpp
@@ -0,0 +1,100 @@
+/*
+ * 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 "WindowContextFactory_unix.h"
+#include "../RasterWindowContext.h"
+#include "SkSurface.h"
+
+using sk_app::RasterWindowContext;
+using sk_app::DisplayParams;
+
+namespace {
+
+class RasterWindowContext_xlib : public RasterWindowContext {
+public:
+ RasterWindowContext_xlib(Display*, XWindow, const DisplayParams&);
+
+ sk_sp<SkSurface> getBackbufferSurface() override;
+ void swapBuffers() override;
+ bool isValid() override { return SkToBool(fWindow); }
+ void resize(uint32_t w, uint32_t h) override;
+ void setDisplayParams(const DisplayParams& params) override;
+
+protected:
+ sk_sp<SkSurface> fBackbufferSurface;
+ Display* fDisplay;
+ XWindow fWindow;
+ GC fGC;
+};
+
+RasterWindowContext_xlib::RasterWindowContext_xlib(Display* display, XWindow window,
+ const DisplayParams& params)
+ : fDisplay(display)
+ , fWindow(window) {
+ fDisplayParams = params;
+ XWindowAttributes attrs;
+ XGetWindowAttributes(fDisplay, fWindow, &attrs);
+ fGC = XCreateGC(fDisplay, fWindow, 0, nullptr);
+ this->resize(attrs.width, attrs.height);
+}
+
+void RasterWindowContext_xlib::setDisplayParams(const DisplayParams& params) {
+ fDisplayParams = params;
+ XWindowAttributes attrs;
+ XGetWindowAttributes(fDisplay, fWindow, &attrs);
+ this->resize(attrs.width, attrs.height);
+}
+
+void RasterWindowContext_xlib::resize(uint32_t w, uint32_t h) {
+ SkImageInfo info = SkImageInfo::Make(w, h, fDisplayParams.fColorType, kPremul_SkAlphaType,
+ fDisplayParams.fColorSpace);
+ fBackbufferSurface = SkSurface::MakeRaster(info);
+
+}
+
+sk_sp<SkSurface> RasterWindowContext_xlib::getBackbufferSurface() { return fBackbufferSurface; }
+
+void RasterWindowContext_xlib::swapBuffers() {
+ SkPixmap pm;
+ if (!fBackbufferSurface->peekPixels(&pm)) {
+ return;
+ }
+ int bitsPerPixel = pm.info().bytesPerPixel() * 8;
+ XImage image;
+ image.width = pm.width();
+ image.height = pm.height();
+ image.format = ZPixmap;
+ image.data = (char*) pm.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 sk_app {
+namespace window_context_factory {
+
+WindowContext* NewRasterForXlib(const XlibWindowInfo& info, const DisplayParams& params) {
+ WindowContext* ctx = new RasterWindowContext_xlib(info.fDisplay, info.fWindow, params);
+ if (!ctx->isValid()) {
+ delete ctx;
+ ctx = nullptr;
+ }
+ return ctx;
+}
+
+} // namespace window_context_factory
+} // namespace sk_app
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