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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ppapi/proxy/graphics_2d_resource.h"
#include "base/functional/bind.h"
#include "ppapi/c/pp_bool.h"
#include "ppapi/c/pp_point.h"
#include "ppapi/c/pp_rect.h"
#include "ppapi/c/pp_resource.h"
#include "ppapi/c/pp_size.h"
#include "ppapi/c/ppb_graphics_2d.h"
#include "ppapi/proxy/dispatch_reply_message.h"
#include "ppapi/proxy/plugin_dispatcher.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/shared_impl/ppapi_globals.h"
#include "ppapi/shared_impl/resource_tracker.h"
#include "ppapi/shared_impl/tracked_callback.h"
#include "ppapi/thunk/enter.h"
#include "ppapi/thunk/ppb_image_data_api.h"
namespace ppapi {
namespace proxy {
Graphics2DResource::Graphics2DResource(Connection connection,
PP_Instance instance,
const PP_Size& size,
PP_Bool is_always_opaque)
: PluginResource(connection, instance),
size_(size),
is_always_opaque_(is_always_opaque),
scale_(1.0f) {
// These checks are copied from PPB_ImageData_Impl::Init to make tests passed.
// Let's remove/refactor this when start to refactor ImageData.
bool bad_args =
size.width <= 0 || size.height <= 0 ||
static_cast<int64_t>(size.width) * static_cast<int64_t>(size.height) >=
std::numeric_limits<int32_t>::max() / 4;
if (!bad_args && !sent_create_to_renderer()) {
SendCreate(RENDERER,
PpapiHostMsg_Graphics2D_Create(size, is_always_opaque));
}
}
Graphics2DResource::~Graphics2DResource() {
}
PP_Bool Graphics2DResource::Describe(PP_Size* size, PP_Bool* is_always_opaque) {
*size = size_;
*is_always_opaque = is_always_opaque_;
return PP_TRUE;
}
thunk::PPB_Graphics2D_API* Graphics2DResource::AsPPB_Graphics2D_API() {
return this;
}
void Graphics2DResource::PaintImageData(PP_Resource image_data,
const PP_Point* top_left,
const PP_Rect* src_rect) {
Resource* image_object =
PpapiGlobals::Get()->GetResourceTracker()->GetResource(image_data);
if (!image_object || pp_instance() != image_object->pp_instance()) {
Log(PP_LOGLEVEL_ERROR,
"Graphics2DResource.PaintImageData: Bad image resource.");
return;
}
PP_Rect dummy;
memset(&dummy, 0, sizeof(PP_Rect));
Post(RENDERER, PpapiHostMsg_Graphics2D_PaintImageData(
image_object->host_resource(), *top_left,
!!src_rect, src_rect ? *src_rect : dummy));
}
void Graphics2DResource::Scroll(const PP_Rect* clip_rect,
const PP_Point* amount) {
PP_Rect dummy;
memset(&dummy, 0, sizeof(PP_Rect));
Post(RENDERER, PpapiHostMsg_Graphics2D_Scroll(
!!clip_rect, clip_rect ? *clip_rect : dummy, *amount));
}
void Graphics2DResource::ReplaceContents(PP_Resource image_data) {
thunk::EnterResourceNoLock<thunk::PPB_ImageData_API> enter_image(
image_data, true);
if (enter_image.failed())
return;
// Check that the PP_Instance matches.
Resource* image_object =
PpapiGlobals::Get()->GetResourceTracker()->GetResource(image_data);
if (!image_object || pp_instance() != image_object->pp_instance()) {
Log(PP_LOGLEVEL_ERROR,
"Graphics2DResource.PaintImageData: Bad image resource.");
return;
}
enter_image.object()->SetIsCandidateForReuse();
Post(RENDERER, PpapiHostMsg_Graphics2D_ReplaceContents(
image_object->host_resource()));
}
PP_Bool Graphics2DResource::SetScale(float scale) {
if (scale <= 0.0f)
return PP_FALSE;
Post(RENDERER, PpapiHostMsg_Graphics2D_SetScale(scale));
scale_ = scale;
return PP_TRUE;
}
float Graphics2DResource::GetScale() {
return scale_;
}
PP_Bool Graphics2DResource::SetLayerTransform(float scale,
const PP_Point* origin,
const PP_Point* translate) {
if (scale <= 0.0f)
return PP_FALSE;
// Adding the origin to the transform.
PP_FloatPoint translate_with_origin;
translate_with_origin.x = (1 - scale) * origin->x - translate->x;
translate_with_origin.y = (1 - scale) * origin->y - translate->y;
Post(RENDERER,
PpapiHostMsg_Graphics2D_SetLayerTransform(scale, translate_with_origin));
return PP_TRUE;
}
int32_t Graphics2DResource::Flush(scoped_refptr<TrackedCallback> callback) {
// If host is not even created, return failure immediately. This can happen
// when failed to initialize (in constructor).
if (!sent_create_to_renderer())
return PP_ERROR_FAILED;
if (TrackedCallback::IsPending(current_flush_callback_))
return PP_ERROR_INPROGRESS; // Can't have >1 flush pending.
current_flush_callback_ = callback;
Call<PpapiPluginMsg_Graphics2D_FlushAck>(
RENDERER, PpapiHostMsg_Graphics2D_Flush(),
base::BindOnce(&Graphics2DResource::OnPluginMsgFlushACK, this));
return PP_OK_COMPLETIONPENDING;
}
bool Graphics2DResource::ReadImageData(PP_Resource image,
const PP_Point* top_left) {
if (!top_left)
return false;
int32_t result = SyncCall<PpapiPluginMsg_Graphics2D_ReadImageDataAck>(
RENDERER,
PpapiHostMsg_Graphics2D_ReadImageData(image, *top_left));
return result == PP_OK;
}
void Graphics2DResource::OnPluginMsgFlushACK(
const ResourceMessageReplyParams& params) {
current_flush_callback_->Run(params.result());
}
} // namespace proxy
} // namespace ppapi
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