| // Copyright (c) 2012 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/renderer/pepper/pepper_graphics_2d_host.h" |
| |
| #include "base/bind.h" |
| #include "base/debug/trace_event.h" |
| #include "base/logging.h" |
| #include "base/message_loop/message_loop.h" |
| #include "cc/resources/shared_bitmap.h" |
| #include "cc/resources/texture_mailbox.h" |
| #include "content/child/child_shared_bitmap_manager.h" |
| #include "content/public/renderer/render_thread.h" |
| #include "content/public/renderer/renderer_ppapi_host.h" |
| #include "content/renderer/pepper/gfx_conversion.h" |
| #include "content/renderer/pepper/pepper_plugin_instance_impl.h" |
| #include "content/renderer/pepper/ppb_image_data_impl.h" |
| #include "content/renderer/render_thread_impl.h" |
| #include "ppapi/c/pp_bool.h" |
| #include "ppapi/c/pp_errors.h" |
| #include "ppapi/c/pp_rect.h" |
| #include "ppapi/c/pp_resource.h" |
| #include "ppapi/host/dispatch_host_message.h" |
| #include "ppapi/host/host_message_context.h" |
| #include "ppapi/host/ppapi_host.h" |
| #include "ppapi/proxy/ppapi_messages.h" |
| #include "ppapi/shared_impl/ppb_view_shared.h" |
| #include "ppapi/thunk/enter.h" |
| #include "skia/ext/platform_canvas.h" |
| #include "third_party/skia/include/core/SkBitmap.h" |
| #include "ui/gfx/blit.h" |
| #include "ui/gfx/point_conversions.h" |
| #include "ui/gfx/rect.h" |
| #include "ui/gfx/rect_conversions.h" |
| #include "ui/gfx/scoped_ns_graphics_context_save_gstate_mac.h" |
| #include "ui/gfx/size_conversions.h" |
| #include "ui/gfx/skia_util.h" |
| |
| #if defined(OS_MACOSX) |
| #include "base/mac/mac_util.h" |
| #include "base/mac/scoped_cftyperef.h" |
| #endif |
| |
| using ppapi::thunk::EnterResourceNoLock; |
| using ppapi::thunk::PPB_ImageData_API; |
| |
| namespace content { |
| |
| namespace { |
| |
| const int64 kOffscreenCallbackDelayMs = 1000 / 30; // 30 fps |
| |
| // Converts a rect inside an image of the given dimensions. The rect may be |
| // NULL to indicate it should be the entire image. If the rect is outside of |
| // the image, this will do nothing and return false. |
| bool ValidateAndConvertRect(const PP_Rect* rect, |
| int image_width, |
| int image_height, |
| gfx::Rect* dest) { |
| if (!rect) { |
| // Use the entire image area. |
| *dest = gfx::Rect(0, 0, image_width, image_height); |
| } else { |
| // Validate the passed-in area. |
| if (rect->point.x < 0 || rect->point.y < 0 || rect->size.width <= 0 || |
| rect->size.height <= 0) |
| return false; |
| |
| // Check the max bounds, being careful of overflow. |
| if (static_cast<int64>(rect->point.x) + |
| static_cast<int64>(rect->size.width) > |
| static_cast<int64>(image_width)) |
| return false; |
| if (static_cast<int64>(rect->point.y) + |
| static_cast<int64>(rect->size.height) > |
| static_cast<int64>(image_height)) |
| return false; |
| |
| *dest = gfx::Rect( |
| rect->point.x, rect->point.y, rect->size.width, rect->size.height); |
| } |
| return true; |
| } |
| |
| // Converts BGRA <-> RGBA. |
| void ConvertBetweenBGRAandRGBA(const uint32_t* input, |
| int pixel_length, |
| uint32_t* output) { |
| for (int i = 0; i < pixel_length; i++) { |
| const unsigned char* pixel_in = |
| reinterpret_cast<const unsigned char*>(&input[i]); |
| unsigned char* pixel_out = reinterpret_cast<unsigned char*>(&output[i]); |
| pixel_out[0] = pixel_in[2]; |
| pixel_out[1] = pixel_in[1]; |
| pixel_out[2] = pixel_in[0]; |
| pixel_out[3] = pixel_in[3]; |
| } |
| } |
| |
| // Converts ImageData from PP_IMAGEDATAFORMAT_BGRA_PREMUL to |
| // PP_IMAGEDATAFORMAT_RGBA_PREMUL, or reverse. It's assumed that the |
| // destination image is always mapped (so will have non-NULL data). |
| void ConvertImageData(PPB_ImageData_Impl* src_image, |
| const SkIRect& src_rect, |
| PPB_ImageData_Impl* dest_image, |
| const SkRect& dest_rect) { |
| ImageDataAutoMapper auto_mapper(src_image); |
| |
| DCHECK(src_image->format() != dest_image->format()); |
| DCHECK(PPB_ImageData_Impl::IsImageDataFormatSupported(src_image->format())); |
| DCHECK(PPB_ImageData_Impl::IsImageDataFormatSupported(dest_image->format())); |
| |
| const SkBitmap* src_bitmap = src_image->GetMappedBitmap(); |
| const SkBitmap* dest_bitmap = dest_image->GetMappedBitmap(); |
| if (src_rect.width() == src_image->width() && |
| dest_rect.width() == dest_image->width()) { |
| // Fast path if the full line needs to be converted. |
| ConvertBetweenBGRAandRGBA( |
| src_bitmap->getAddr32(static_cast<int>(src_rect.fLeft), |
| static_cast<int>(src_rect.fTop)), |
| src_rect.width() * src_rect.height(), |
| dest_bitmap->getAddr32(static_cast<int>(dest_rect.fLeft), |
| static_cast<int>(dest_rect.fTop))); |
| } else { |
| // Slow path where we convert line by line. |
| for (int y = 0; y < src_rect.height(); y++) { |
| ConvertBetweenBGRAandRGBA( |
| src_bitmap->getAddr32(static_cast<int>(src_rect.fLeft), |
| static_cast<int>(src_rect.fTop + y)), |
| src_rect.width(), |
| dest_bitmap->getAddr32(static_cast<int>(dest_rect.fLeft), |
| static_cast<int>(dest_rect.fTop + y))); |
| } |
| } |
| } |
| |
| } // namespace |
| |
| struct PepperGraphics2DHost::QueuedOperation { |
| enum Type { PAINT, SCROLL, REPLACE, }; |
| |
| QueuedOperation(Type t) |
| : type(t), paint_x(0), paint_y(0), scroll_dx(0), scroll_dy(0) {} |
| |
| Type type; |
| |
| // Valid when type == PAINT. |
| scoped_refptr<PPB_ImageData_Impl> paint_image; |
| int paint_x, paint_y; |
| gfx::Rect paint_src_rect; |
| |
| // Valid when type == SCROLL. |
| gfx::Rect scroll_clip_rect; |
| int scroll_dx, scroll_dy; |
| |
| // Valid when type == REPLACE. |
| scoped_refptr<PPB_ImageData_Impl> replace_image; |
| }; |
| |
| // static |
| PepperGraphics2DHost* PepperGraphics2DHost::Create( |
| RendererPpapiHost* host, |
| PP_Instance instance, |
| PP_Resource resource, |
| const PP_Size& size, |
| PP_Bool is_always_opaque, |
| scoped_refptr<PPB_ImageData_Impl> backing_store) { |
| PepperGraphics2DHost* resource_host = |
| new PepperGraphics2DHost(host, instance, resource); |
| if (!resource_host->Init(size.width, |
| size.height, |
| PP_ToBool(is_always_opaque), |
| backing_store)) { |
| delete resource_host; |
| return NULL; |
| } |
| return resource_host; |
| } |
| |
| PepperGraphics2DHost::PepperGraphics2DHost(RendererPpapiHost* host, |
| PP_Instance instance, |
| PP_Resource resource) |
| : ResourceHost(host->GetPpapiHost(), instance, resource), |
| renderer_ppapi_host_(host), |
| bound_instance_(NULL), |
| need_flush_ack_(false), |
| offscreen_flush_pending_(false), |
| is_always_opaque_(false), |
| scale_(1.0f), |
| is_running_in_process_(host->IsRunningInProcess()), |
| texture_mailbox_modified_(true) {} |
| |
| PepperGraphics2DHost::~PepperGraphics2DHost() { |
| // Unbind from the instance when destroyed if we're still bound. |
| if (bound_instance_) |
| bound_instance_->BindGraphics(bound_instance_->pp_instance(), 0); |
| } |
| |
| bool PepperGraphics2DHost::Init( |
| int width, |
| int height, |
| bool is_always_opaque, |
| scoped_refptr<PPB_ImageData_Impl> backing_store) { |
| // The underlying PPB_ImageData_Impl will validate the dimensions. |
| image_data_ = backing_store; |
| if (!image_data_->Init(PPB_ImageData_Impl::GetNativeImageDataFormat(), |
| width, |
| height, |
| true) || |
| !image_data_->Map()) { |
| image_data_ = NULL; |
| return false; |
| } |
| is_always_opaque_ = is_always_opaque; |
| scale_ = 1.0f; |
| return true; |
| } |
| |
| int32_t PepperGraphics2DHost::OnResourceMessageReceived( |
| const IPC::Message& msg, |
| ppapi::host::HostMessageContext* context) { |
| PPAPI_BEGIN_MESSAGE_MAP(PepperGraphics2DHost, msg) |
| PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_Graphics2D_PaintImageData, |
| OnHostMsgPaintImageData) |
| PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_Graphics2D_Scroll, |
| OnHostMsgScroll) |
| PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_Graphics2D_ReplaceContents, |
| OnHostMsgReplaceContents) |
| PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_Graphics2D_Flush, |
| OnHostMsgFlush) |
| PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_Graphics2D_SetScale, |
| OnHostMsgSetScale) |
| PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_Graphics2D_ReadImageData, |
| OnHostMsgReadImageData) |
| PPAPI_END_MESSAGE_MAP() |
| return PP_ERROR_FAILED; |
| } |
| |
| bool PepperGraphics2DHost::IsGraphics2DHost() { return true; } |
| |
| bool PepperGraphics2DHost::ReadImageData(PP_Resource image, |
| const PP_Point* top_left) { |
| // Get and validate the image object to paint into. |
| EnterResourceNoLock<PPB_ImageData_API> enter(image, true); |
| if (enter.failed()) |
| return false; |
| PPB_ImageData_Impl* image_resource = |
| static_cast<PPB_ImageData_Impl*>(enter.object()); |
| if (!PPB_ImageData_Impl::IsImageDataFormatSupported(image_resource->format())) |
| return false; // Must be in the right format. |
| |
| // Validate the bitmap position. |
| int x = top_left->x; |
| if (x < 0 || |
| static_cast<int64>(x) + static_cast<int64>(image_resource->width()) > |
| image_data_->width()) |
| return false; |
| int y = top_left->y; |
| if (y < 0 || |
| static_cast<int64>(y) + static_cast<int64>(image_resource->height()) > |
| image_data_->height()) |
| return false; |
| |
| ImageDataAutoMapper auto_mapper(image_resource); |
| if (!auto_mapper.is_valid()) |
| return false; |
| |
| SkIRect src_irect = {x, y, x + image_resource->width(), |
| y + image_resource->height()}; |
| SkRect dest_rect = {SkIntToScalar(0), SkIntToScalar(0), |
| SkIntToScalar(image_resource->width()), |
| SkIntToScalar(image_resource->height())}; |
| |
| if (image_resource->format() != image_data_->format()) { |
| // Convert the image data if the format does not match. |
| ConvertImageData(image_data_.get(), src_irect, image_resource, dest_rect); |
| } else { |
| SkCanvas* dest_canvas = image_resource->GetCanvas(); |
| |
| // We want to replace the contents of the bitmap rather than blend. |
| SkPaint paint; |
| paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
| dest_canvas->drawBitmapRect( |
| *image_data_->GetMappedBitmap(), &src_irect, dest_rect, &paint); |
| } |
| return true; |
| } |
| |
| bool PepperGraphics2DHost::BindToInstance( |
| PepperPluginInstanceImpl* new_instance) { |
| if (new_instance && new_instance->pp_instance() != pp_instance()) |
| return false; // Can't bind other instance's contexts. |
| if (bound_instance_ == new_instance) |
| return true; // Rebinding the same device, nothing to do. |
| if (bound_instance_ && new_instance) |
| return false; // Can't change a bound device. |
| |
| if (!new_instance) { |
| // When the device is detached, we'll not get any more paint callbacks so |
| // we need to clear the list, but we still want to issue any pending |
| // callbacks to the plugin. |
| if (need_flush_ack_) |
| ScheduleOffscreenFlushAck(); |
| } else { |
| // Devices being replaced, redraw the plugin. |
| new_instance->InvalidateRect(gfx::Rect()); |
| } |
| |
| texture_mailbox_modified_ = true; |
| |
| bound_instance_ = new_instance; |
| return true; |
| } |
| |
| // The |backing_bitmap| must be clipped to the |plugin_rect| to avoid painting |
| // outside the plugin area. This can happen if the plugin has been resized since |
| // PaintImageData verified the image is within the plugin size. |
| void PepperGraphics2DHost::Paint(blink::WebCanvas* canvas, |
| const gfx::Rect& plugin_rect, |
| const gfx::Rect& paint_rect) { |
| TRACE_EVENT0("pepper", "PepperGraphics2DHost::Paint"); |
| ImageDataAutoMapper auto_mapper(image_data_.get()); |
| const SkBitmap& backing_bitmap = *image_data_->GetMappedBitmap(); |
| |
| gfx::Rect invalidate_rect = plugin_rect; |
| invalidate_rect.Intersect(paint_rect); |
| SkRect sk_invalidate_rect = gfx::RectToSkRect(invalidate_rect); |
| SkAutoCanvasRestore auto_restore(canvas, true); |
| canvas->clipRect(sk_invalidate_rect); |
| gfx::Size pixel_image_size(image_data_->width(), image_data_->height()); |
| gfx::Size image_size = |
| gfx::ToFlooredSize(gfx::ScaleSize(pixel_image_size, scale_)); |
| |
| PepperPluginInstance* plugin_instance = |
| renderer_ppapi_host_->GetPluginInstance(pp_instance()); |
| if (!plugin_instance) |
| return; |
| if (plugin_instance->IsFullPagePlugin()) { |
| // When we're resizing a window with a full-frame plugin, the plugin may |
| // not yet have bound a new device, which will leave parts of the |
| // background exposed if the window is getting larger. We want this to |
| // show white (typically less jarring) rather than black or uninitialized. |
| // We don't do this for non-full-frame plugins since we specifically want |
| // the page background to show through. |
| SkAutoCanvasRestore auto_restore(canvas, true); |
| SkRect image_data_rect = |
| gfx::RectToSkRect(gfx::Rect(plugin_rect.origin(), image_size)); |
| canvas->clipRect(image_data_rect, SkRegion::kDifference_Op); |
| |
| SkPaint paint; |
| paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
| paint.setColor(SK_ColorWHITE); |
| canvas->drawRect(sk_invalidate_rect, paint); |
| } |
| |
| SkBitmap image; |
| // Copy to device independent bitmap when target canvas doesn't support |
| // platform paint. |
| if (!skia::SupportsPlatformPaint(canvas)) |
| backing_bitmap.copyTo(&image, kN32_SkColorType); |
| else |
| image = backing_bitmap; |
| |
| SkPaint paint; |
| if (is_always_opaque_) { |
| // When we know the device is opaque, we can disable blending for slightly |
| // more optimized painting. |
| paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
| } |
| |
| SkPoint origin; |
| origin.set(SkIntToScalar(plugin_rect.x()), SkIntToScalar(plugin_rect.y())); |
| |
| SkPoint pixel_origin = origin; |
| |
| if (scale_ != 1.0f && scale_ > 0.0f) { |
| canvas->scale(scale_, scale_); |
| pixel_origin.set(pixel_origin.x() * (1.0f / scale_), |
| pixel_origin.y() * (1.0f / scale_)); |
| } |
| canvas->drawBitmap(image, pixel_origin.x(), pixel_origin.y(), &paint); |
| } |
| |
| void PepperGraphics2DHost::ViewInitiatedPaint() {} |
| |
| void PepperGraphics2DHost::ViewFlushedPaint() { |
| TRACE_EVENT0("pepper", "PepperGraphics2DHost::ViewFlushedPaint"); |
| if (need_flush_ack_) { |
| SendFlushAck(); |
| need_flush_ack_ = false; |
| } |
| } |
| |
| void PepperGraphics2DHost::SetScale(float scale) { scale_ = scale; } |
| |
| float PepperGraphics2DHost::GetScale() const { return scale_; } |
| |
| bool PepperGraphics2DHost::IsAlwaysOpaque() const { return is_always_opaque_; } |
| |
| PPB_ImageData_Impl* PepperGraphics2DHost::ImageData() { |
| return image_data_.get(); |
| } |
| |
| gfx::Size PepperGraphics2DHost::Size() const { |
| if (!image_data_.get()) |
| return gfx::Size(); |
| return gfx::Size(image_data_->width(), image_data_->height()); |
| } |
| |
| int32_t PepperGraphics2DHost::OnHostMsgPaintImageData( |
| ppapi::host::HostMessageContext* context, |
| const ppapi::HostResource& image_data, |
| const PP_Point& top_left, |
| bool src_rect_specified, |
| const PP_Rect& src_rect) { |
| EnterResourceNoLock<PPB_ImageData_API> enter(image_data.host_resource(), |
| true); |
| if (enter.failed()) |
| return PP_ERROR_BADRESOURCE; |
| PPB_ImageData_Impl* image_resource = |
| static_cast<PPB_ImageData_Impl*>(enter.object()); |
| |
| QueuedOperation operation(QueuedOperation::PAINT); |
| operation.paint_image = image_resource; |
| if (!ValidateAndConvertRect(src_rect_specified ? &src_rect : NULL, |
| image_resource->width(), |
| image_resource->height(), |
| &operation.paint_src_rect)) |
| return PP_ERROR_BADARGUMENT; |
| |
| // Validate the bitmap position using the previously-validated rect, there |
| // should be no painted area outside of the image. |
| int64 x64 = static_cast<int64>(top_left.x); |
| int64 y64 = static_cast<int64>(top_left.y); |
| if (x64 + static_cast<int64>(operation.paint_src_rect.x()) < 0 || |
| x64 + static_cast<int64>(operation.paint_src_rect.right()) > |
| image_data_->width()) |
| return PP_ERROR_BADARGUMENT; |
| if (y64 + static_cast<int64>(operation.paint_src_rect.y()) < 0 || |
| y64 + static_cast<int64>(operation.paint_src_rect.bottom()) > |
| image_data_->height()) |
| return PP_ERROR_BADARGUMENT; |
| operation.paint_x = top_left.x; |
| operation.paint_y = top_left.y; |
| |
| queued_operations_.push_back(operation); |
| return PP_OK; |
| } |
| |
| int32_t PepperGraphics2DHost::OnHostMsgScroll( |
| ppapi::host::HostMessageContext* context, |
| bool clip_specified, |
| const PP_Rect& clip, |
| const PP_Point& amount) { |
| QueuedOperation operation(QueuedOperation::SCROLL); |
| if (!ValidateAndConvertRect(clip_specified ? &clip : NULL, |
| image_data_->width(), |
| image_data_->height(), |
| &operation.scroll_clip_rect)) |
| return PP_ERROR_BADARGUMENT; |
| |
| // If we're being asked to scroll by more than the clip rect size, just |
| // ignore this scroll command and say it worked. |
| int32 dx = amount.x; |
| int32 dy = amount.y; |
| if (dx <= -image_data_->width() || dx >= image_data_->width() || |
| dy <= -image_data_->height() || dy >= image_data_->height()) |
| return PP_ERROR_BADARGUMENT; |
| |
| operation.scroll_dx = dx; |
| operation.scroll_dy = dy; |
| |
| queued_operations_.push_back(operation); |
| return PP_OK; |
| } |
| |
| int32_t PepperGraphics2DHost::OnHostMsgReplaceContents( |
| ppapi::host::HostMessageContext* context, |
| const ppapi::HostResource& image_data) { |
| EnterResourceNoLock<PPB_ImageData_API> enter(image_data.host_resource(), |
| true); |
| if (enter.failed()) |
| return PP_ERROR_BADRESOURCE; |
| PPB_ImageData_Impl* image_resource = |
| static_cast<PPB_ImageData_Impl*>(enter.object()); |
| |
| if (!PPB_ImageData_Impl::IsImageDataFormatSupported(image_resource->format())) |
| return PP_ERROR_BADARGUMENT; |
| |
| if (image_resource->width() != image_data_->width() || |
| image_resource->height() != image_data_->height()) |
| return PP_ERROR_BADARGUMENT; |
| |
| QueuedOperation operation(QueuedOperation::REPLACE); |
| operation.replace_image = image_resource; |
| queued_operations_.push_back(operation); |
| return PP_OK; |
| } |
| |
| int32_t PepperGraphics2DHost::OnHostMsgFlush( |
| ppapi::host::HostMessageContext* context, |
| const std::vector<ui::LatencyInfo>& latency_info) { |
| // Don't allow more than one pending flush at a time. |
| if (HasPendingFlush()) |
| return PP_ERROR_INPROGRESS; |
| |
| if (bound_instance_) |
| bound_instance_->AddLatencyInfo(latency_info); |
| |
| PP_Resource old_image_data = 0; |
| flush_reply_context_ = context->MakeReplyMessageContext(); |
| if (is_running_in_process_) |
| return Flush(NULL); |
| |
| // Reuse image data when running out of process. |
| int32_t result = Flush(&old_image_data); |
| |
| if (old_image_data) { |
| // If the Graphics2D has an old image data it's not using any more, send |
| // it back to the plugin for possible re-use. See ppb_image_data_proxy.cc |
| // for a description how this process works. |
| ppapi::HostResource old_image_data_host_resource; |
| old_image_data_host_resource.SetHostResource(pp_instance(), old_image_data); |
| host()->Send(new PpapiMsg_PPBImageData_NotifyUnusedImageData( |
| ppapi::API_ID_PPB_IMAGE_DATA, old_image_data_host_resource)); |
| } |
| |
| return result; |
| } |
| |
| int32_t PepperGraphics2DHost::OnHostMsgSetScale( |
| ppapi::host::HostMessageContext* context, |
| float scale) { |
| if (scale > 0.0f) { |
| scale_ = scale; |
| return PP_OK; |
| } |
| return PP_ERROR_BADARGUMENT; |
| } |
| |
| int32_t PepperGraphics2DHost::OnHostMsgReadImageData( |
| ppapi::host::HostMessageContext* context, |
| PP_Resource image, |
| const PP_Point& top_left) { |
| context->reply_msg = PpapiPluginMsg_Graphics2D_ReadImageDataAck(); |
| return ReadImageData(image, &top_left) ? PP_OK : PP_ERROR_FAILED; |
| } |
| |
| void ReleaseCallback(scoped_ptr<cc::SharedBitmap> bitmap, |
| uint32 sync_point, |
| bool lost_resource) {} |
| |
| bool PepperGraphics2DHost::PrepareTextureMailbox( |
| cc::TextureMailbox* mailbox, |
| scoped_ptr<cc::SingleReleaseCallback>* release_callback) { |
| if (!texture_mailbox_modified_) |
| return false; |
| // TODO(jbauman): Send image_data_ through mailbox to avoid copy. |
| gfx::Size pixel_image_size(image_data_->width(), image_data_->height()); |
| scoped_ptr<cc::SharedBitmap> shared_bitmap = |
| RenderThreadImpl::current() |
| ->shared_bitmap_manager() |
| ->AllocateSharedBitmap(pixel_image_size); |
| if (!shared_bitmap) |
| return false; |
| void* src = image_data_->Map(); |
| memcpy(shared_bitmap->pixels(), |
| src, |
| cc::SharedBitmap::CheckedSizeInBytes(pixel_image_size)); |
| image_data_->Unmap(); |
| |
| *mailbox = cc::TextureMailbox(shared_bitmap->memory(), pixel_image_size); |
| *release_callback = cc::SingleReleaseCallback::Create( |
| base::Bind(&ReleaseCallback, base::Passed(&shared_bitmap))); |
| texture_mailbox_modified_ = false; |
| return true; |
| } |
| |
| void PepperGraphics2DHost::AttachedToNewLayer() { |
| texture_mailbox_modified_ = true; |
| } |
| |
| int32_t PepperGraphics2DHost::Flush(PP_Resource* old_image_data) { |
| bool done_replace_contents = false; |
| bool no_update_visible = true; |
| bool is_plugin_visible = true; |
| for (size_t i = 0; i < queued_operations_.size(); i++) { |
| QueuedOperation& operation = queued_operations_[i]; |
| gfx::Rect op_rect; |
| switch (operation.type) { |
| case QueuedOperation::PAINT: |
| ExecutePaintImageData(operation.paint_image.get(), |
| operation.paint_x, |
| operation.paint_y, |
| operation.paint_src_rect, |
| &op_rect); |
| break; |
| case QueuedOperation::SCROLL: |
| ExecuteScroll(operation.scroll_clip_rect, |
| operation.scroll_dx, |
| operation.scroll_dy, |
| &op_rect); |
| break; |
| case QueuedOperation::REPLACE: |
| // Since the out parameter |old_image_data| takes ownership of the |
| // reference, if there are more than one ReplaceContents calls queued |
| // the first |old_image_data| will get overwritten and leaked. So we |
| // only supply this for the first call. |
| ExecuteReplaceContents(operation.replace_image.get(), |
| &op_rect, |
| done_replace_contents ? NULL : old_image_data); |
| done_replace_contents = true; |
| break; |
| } |
| |
| // For correctness with accelerated compositing, we must issue an invalidate |
| // on the full op_rect even if it is partially or completely off-screen. |
| // However, if we issue an invalidate for a clipped-out region, WebKit will |
| // do nothing and we won't get any ViewFlushedPaint calls, leaving our |
| // callback stranded. So we still need to check whether the repainted area |
| // is visible to determine how to deal with the callback. |
| if (bound_instance_ && !op_rect.IsEmpty()) { |
| gfx::Point scroll_delta(operation.scroll_dx, operation.scroll_dy); |
| if (!ConvertToLogicalPixels(scale_, |
| &op_rect, |
| operation.type == QueuedOperation::SCROLL |
| ? &scroll_delta |
| : NULL)) { |
| // Conversion requires falling back to InvalidateRect. |
| operation.type = QueuedOperation::PAINT; |
| } |
| |
| gfx::Rect clip = PP_ToGfxRect(bound_instance_->view_data().clip_rect); |
| is_plugin_visible = !clip.IsEmpty(); |
| |
| // Set |no_update_visible| to false if the change overlaps the visible |
| // area. |
| if (!gfx::IntersectRects(clip, op_rect).IsEmpty()) { |
| no_update_visible = false; |
| } |
| |
| // Notify the plugin of the entire change (op_rect), even if it is |
| // partially or completely off-screen. |
| if (operation.type == QueuedOperation::SCROLL) { |
| bound_instance_->ScrollRect( |
| scroll_delta.x(), scroll_delta.y(), op_rect); |
| } else { |
| if (!op_rect.IsEmpty()) |
| bound_instance_->InvalidateRect(op_rect); |
| } |
| texture_mailbox_modified_ = true; |
| } |
| } |
| queued_operations_.clear(); |
| |
| if (!bound_instance_) { |
| // As promised in the API, we always schedule callback when unbound. |
| ScheduleOffscreenFlushAck(); |
| } else if (no_update_visible && is_plugin_visible && |
| bound_instance_->view_data().is_page_visible) { |
| // There's nothing visible to invalidate so just schedule the callback to |
| // execute in the next round of the message loop. |
| ScheduleOffscreenFlushAck(); |
| } else { |
| need_flush_ack_ = true; |
| } |
| |
| return PP_OK_COMPLETIONPENDING; |
| } |
| |
| void PepperGraphics2DHost::ExecutePaintImageData(PPB_ImageData_Impl* image, |
| int x, |
| int y, |
| const gfx::Rect& src_rect, |
| gfx::Rect* invalidated_rect) { |
| // Ensure the source image is mapped to read from it. |
| ImageDataAutoMapper auto_mapper(image); |
| if (!auto_mapper.is_valid()) |
| return; |
| |
| // Portion within the source image to cut out. |
| SkIRect src_irect = {src_rect.x(), src_rect.y(), src_rect.right(), |
| src_rect.bottom()}; |
| |
| // Location within the backing store to copy to. |
| *invalidated_rect = src_rect; |
| invalidated_rect->Offset(x, y); |
| SkRect dest_rect = {SkIntToScalar(invalidated_rect->x()), |
| SkIntToScalar(invalidated_rect->y()), |
| SkIntToScalar(invalidated_rect->right()), |
| SkIntToScalar(invalidated_rect->bottom())}; |
| |
| if (image->format() != image_data_->format()) { |
| // Convert the image data if the format does not match. |
| ConvertImageData(image, src_irect, image_data_.get(), dest_rect); |
| } else { |
| // We're guaranteed to have a mapped canvas since we mapped it in Init(). |
| SkCanvas* backing_canvas = image_data_->GetCanvas(); |
| |
| // We want to replace the contents of the bitmap rather than blend. |
| SkPaint paint; |
| paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
| backing_canvas->drawBitmapRect( |
| *image->GetMappedBitmap(), &src_irect, dest_rect, &paint); |
| } |
| } |
| |
| void PepperGraphics2DHost::ExecuteScroll(const gfx::Rect& clip, |
| int dx, |
| int dy, |
| gfx::Rect* invalidated_rect) { |
| gfx::ScrollCanvas(image_data_->GetCanvas(), clip, gfx::Vector2d(dx, dy)); |
| *invalidated_rect = clip; |
| } |
| |
| void PepperGraphics2DHost::ExecuteReplaceContents(PPB_ImageData_Impl* image, |
| gfx::Rect* invalidated_rect, |
| PP_Resource* old_image_data) { |
| if (image->format() != image_data_->format()) { |
| DCHECK(image->width() == image_data_->width() && |
| image->height() == image_data_->height()); |
| // Convert the image data if the format does not match. |
| SkIRect src_irect = {0, 0, image->width(), image->height()}; |
| SkRect dest_rect = {SkIntToScalar(0), SkIntToScalar(0), |
| SkIntToScalar(image_data_->width()), |
| SkIntToScalar(image_data_->height())}; |
| ConvertImageData(image, src_irect, image_data_.get(), dest_rect); |
| } else { |
| // The passed-in image may not be mapped in our process, and we need to |
| // guarantee that the current backing store is always mapped. |
| if (!image->Map()) |
| return; |
| |
| if (old_image_data) |
| *old_image_data = image_data_->GetReference(); |
| image_data_ = image; |
| } |
| *invalidated_rect = |
| gfx::Rect(0, 0, image_data_->width(), image_data_->height()); |
| } |
| |
| void PepperGraphics2DHost::SendFlushAck() { |
| host()->SendReply(flush_reply_context_, PpapiPluginMsg_Graphics2D_FlushAck()); |
| } |
| |
| void PepperGraphics2DHost::SendOffscreenFlushAck() { |
| DCHECK(offscreen_flush_pending_); |
| |
| // We must clear this flag before issuing the callback. It will be |
| // common for the plugin to issue another invalidate in response to a flush |
| // callback, and we don't want to think that a callback is already pending. |
| offscreen_flush_pending_ = false; |
| SendFlushAck(); |
| } |
| |
| void PepperGraphics2DHost::ScheduleOffscreenFlushAck() { |
| offscreen_flush_pending_ = true; |
| base::MessageLoop::current()->PostDelayedTask( |
| FROM_HERE, |
| base::Bind(&PepperGraphics2DHost::SendOffscreenFlushAck, AsWeakPtr()), |
| base::TimeDelta::FromMilliseconds(kOffscreenCallbackDelayMs)); |
| } |
| |
| bool PepperGraphics2DHost::HasPendingFlush() const { |
| return need_flush_ack_ || offscreen_flush_pending_; |
| } |
| |
| // static |
| bool PepperGraphics2DHost::ConvertToLogicalPixels(float scale, |
| gfx::Rect* op_rect, |
| gfx::Point* delta) { |
| if (scale == 1.0f || scale <= 0.0f) |
| return true; |
| |
| gfx::Rect original_rect = *op_rect; |
| // Take the enclosing rectangle after scaling so a rectangle scaled down then |
| // scaled back up by the inverse scale would fully contain the entire area |
| // affected by the original rectangle. |
| *op_rect = gfx::ToEnclosingRect(gfx::ScaleRect(*op_rect, scale)); |
| if (delta) { |
| gfx::Point original_delta = *delta; |
| float inverse_scale = 1.0f / scale; |
| *delta = gfx::ToFlooredPoint(gfx::ScalePoint(*delta, scale)); |
| |
| gfx::Rect inverse_scaled_rect = |
| gfx::ToEnclosingRect(gfx::ScaleRect(*op_rect, inverse_scale)); |
| if (original_rect != inverse_scaled_rect) |
| return false; |
| gfx::Point inverse_scaled_point = |
| gfx::ToFlooredPoint(gfx::ScalePoint(*delta, inverse_scale)); |
| if (original_delta != inverse_scaled_point) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| } // namespace content |
