Android Webview IPC-based sync compositing

content/common/android/sync_compositor_messages.cc

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/common/android/sync_compositor_messages.h"
+
+namespace IPC {
+
+void ParamTraits<gfx::ScrollOffset>::Write(

[dcheng, 2015/10/27 21:06:58]

It feels like maybe this should be in ui/gfx/ipc?

[boliu, 2015/10/28 02:07:06]

Good call! Done

+    Message* m, const param_type& p) {
+  m->WriteDouble(p.x());
+  m->WriteDouble(p.y());
+}
+
+bool ParamTraits<gfx::ScrollOffset>::Read(const Message* m,
+                                       base::PickleIterator* iter,

[dcheng, 2015/10/27 21:06:58]

Hmm, did clang-format do this? It looks funny.

[boliu, 2015/10/28 02:07:06]

Nope. I just didn't clang-format this.

And clang-formatted it now :)

+                                       param_type* r) {
+  double x = 0.f;
+  double y = 0.f;
+  if (!iter->ReadDouble(&x))
+    return false;
+  if (!iter->ReadDouble(&y))
+    return false;
+  r->set_x(x);
+  r->set_y(y);
+  return true;
+}
+
+void ParamTraits<gfx::ScrollOffset>::Log(
+    const param_type& p, std::string* l) {
+  l->append("(");
+  LogParam(p.x(), l);
+  l->append(", ");
+  LogParam(p.y(), l);
+  l->append(")");
+}
+
+}  // namespace IPC
+
+namespace content {
+
+CommonBrowserParams::CommonBrowserParams() : bytes_limit(0u) {}
+
+CommonBrowserParams::CommonBrowserParams(
+    size_t bytes_limit,
+    const gfx::ScrollOffset& root_scroll_offset)
+    : bytes_limit(bytes_limit),
+      root_scroll_offset(root_scroll_offset) {}
+
+CommonBrowserParams::~CommonBrowserParams() {}
+
+DemandDrawHwParams::DemandDrawHwParams() {}
+
+DemandDrawHwParams::DemandDrawHwParams(
+    const gfx::Size& surface_size,
+    const gfx::Transform& transform,
+    const gfx::Rect& viewport,
+    const gfx::Rect& clip,
+    const gfx::Rect& viewport_rect_for_tile_priority,
+    const gfx::Transform& transform_for_tile_priority)
+    : surface_size(surface_size),
+      transform(transform),
+      viewport(viewport),
+      clip(clip),
+      viewport_rect_for_tile_priority(viewport_rect_for_tile_priority),
+      transform_for_tile_priority(transform_for_tile_priority) {}
+
+DemandDrawHwParams::~DemandDrawHwParams() {}
+
+CommonRendererParams::CommonRendererParams()
+    : version(0u),
+      page_scale_factor(0.f),
+      min_page_scale_factor(0.f),
+      max_page_scale_factor(0.f),
+      need_animate_scroll(false),
+      need_invalidate(false),
+      need_begin_frame(false),
+      did_activate_pending_tree(false) {}
+
+CommonRendererParams::CommonRendererParams(
+    unsigned int version,
+    const gfx::ScrollOffset& total_scroll_offset,
+    const gfx::ScrollOffset& max_scroll_offset,
+    const gfx::SizeF& scrollable_size,
+    float page_scale_factor,
+    float min_page_scale_factor,
+    float max_page_scale_factor,
+    bool need_animate_scroll,
+    bool need_invalidate,
+    bool need_begin_frame,
+    bool did_activate_pending_tree)
+    : version(version),
+      total_scroll_offset(total_scroll_offset),
+      max_scroll_offset(max_scroll_offset),
+      scrollable_size(scrollable_size),
+      page_scale_factor(page_scale_factor),
+      min_page_scale_factor(min_page_scale_factor),
+      max_page_scale_factor(max_page_scale_factor),
+      need_animate_scroll(need_animate_scroll),
+      need_invalidate(need_invalidate),
+      need_begin_frame(need_begin_frame),
+      did_activate_pending_tree(did_activate_pending_tree) {}
+
+CommonRendererParams::~CommonRendererParams() {}
+
+};