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// Copyright (c) 2010 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 "chrome/browser/renderer_host/backing_store_proxy.h"
#include "base/gfx/rect.h"
#include "chrome/browser/gpu_process_host.h"
#include "chrome/browser/renderer_host/render_process_host.h"
#include "chrome/browser/renderer_host/render_widget_host.h"
#include "chrome/common/gpu_messages.h"
#include "chrome/common/render_messages.h"
BackingStoreProxy::BackingStoreProxy(RenderWidgetHost* widget,
const gfx::Size& size,
GpuProcessHost* process,
int32 routing_id)
: BackingStore(widget, size),
process_(process),
routing_id_(routing_id),
waiting_for_paint_ack_(false) {
process_->AddRoute(routing_id_, this);
}
BackingStoreProxy::~BackingStoreProxy() {
process_->RemoveRoute(routing_id_);
}
void BackingStoreProxy::PaintToBackingStore(
RenderProcessHost* process,
TransportDIB::Id bitmap,
const gfx::Rect& bitmap_rect,
const std::vector<gfx::Rect>& copy_rects,
bool* painted_synchronously) {
DCHECK(!waiting_for_paint_ack_);
if (process_->Send(new GpuMsg_PaintToBackingStore(
routing_id_, ::GetProcessId(process->GetHandle()),
bitmap, bitmap_rect, copy_rects))) {
// Message sent successfully, so the caller can not destroy the
// TransportDIB. OnDonePaintingToBackingStore will free it later.
*painted_synchronously = false;
waiting_for_paint_ack_ = true;
} else {
// On error, we're done with the TransportDIB and the caller can free it.
*painted_synchronously = true;
}
}
bool BackingStoreProxy::CopyFromBackingStore(const gfx::Rect& rect,
skia::PlatformCanvas* output) {
NOTIMPLEMENTED();
return false;
}
void BackingStoreProxy::ScrollBackingStore(int dx, int dy,
const gfx::Rect& clip_rect,
const gfx::Size& view_size) {
process_->Send(new GpuMsg_ScrollBackingStore(routing_id_, dx, dy,
clip_rect, view_size));
}
void BackingStoreProxy::OnMessageReceived(const IPC::Message& msg) {
IPC_BEGIN_MESSAGE_MAP(BackingStoreProxy, msg)
IPC_MESSAGE_HANDLER(GpuHostMsg_PaintToBackingStore_ACK,
OnPaintToBackingStoreACK)
IPC_END_MESSAGE_MAP_EX()
}
void BackingStoreProxy::OnChannelConnected(int32 peer_pid) {
}
void BackingStoreProxy::OnChannelError() {
if (waiting_for_paint_ack_) {
// If the GPU process dies while painting, the renderer will be waiting for
// the paint ACK before painting any more. Since no ack is coming, we
// manually declare that we're done with the transport DIB here so it can
// continue.
OnPaintToBackingStoreACK();
}
// FIXME(brettw) does this mean we aren't getting any more messages and we
// should delete outselves?
}
void BackingStoreProxy::OnPaintToBackingStoreACK() {
DCHECK(waiting_for_paint_ack_);
render_widget_host()->DonePaintingToBackingStore();
waiting_for_paint_ack_ = false;
}
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