| // 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/ppb_scrollbar_impl.h" |
| |
| #include "base/bind.h" |
| #include "base/logging.h" |
| #include "base/message_loop/message_loop.h" |
| #include "content/renderer/pepper/common.h" |
| #include "content/renderer/pepper/event_conversion.h" |
| #include "content/renderer/pepper/host_globals.h" |
| #include "content/renderer/pepper/pepper_plugin_instance_impl.h" |
| #include "content/renderer/pepper/plugin_module.h" |
| #include "content/renderer/pepper/ppb_image_data_impl.h" |
| #include "ppapi/c/dev/ppp_scrollbar_dev.h" |
| #include "ppapi/thunk/thunk.h" |
| #include "skia/ext/platform_canvas.h" |
| #include "third_party/WebKit/public/platform/WebCanvas.h" |
| #include "third_party/WebKit/public/platform/WebRect.h" |
| #include "third_party/WebKit/public/platform/WebVector.h" |
| #include "third_party/WebKit/public/web/WebInputEvent.h" |
| #include "third_party/WebKit/public/web/WebPluginScrollbar.h" |
| |
| #if defined(OS_WIN) |
| #include "base/win/windows_version.h" |
| #endif |
| |
| using ppapi::thunk::PPB_Scrollbar_API; |
| using WebKit::WebInputEvent; |
| using WebKit::WebRect; |
| using WebKit::WebScrollbar; |
| using WebKit::WebPluginScrollbar; |
| |
| namespace content { |
| |
| // static |
| PP_Resource PPB_Scrollbar_Impl::Create(PP_Instance instance, |
| bool vertical) { |
| scoped_refptr<PPB_Scrollbar_Impl> scrollbar( |
| new PPB_Scrollbar_Impl(instance)); |
| scrollbar->Init(vertical); |
| return scrollbar->GetReference(); |
| } |
| |
| PPB_Scrollbar_Impl::PPB_Scrollbar_Impl(PP_Instance instance) |
| : PPB_Widget_Impl(instance), |
| weak_ptr_factory_(this) { |
| } |
| |
| PPB_Scrollbar_Impl::~PPB_Scrollbar_Impl() { |
| } |
| |
| void PPB_Scrollbar_Impl::Init(bool vertical) { |
| PepperPluginInstanceImpl* plugin_instance = |
| HostGlobals::Get()->GetInstance(pp_instance()); |
| if (!plugin_instance) |
| return; |
| scrollbar_.reset(WebPluginScrollbar::createForPlugin( |
| vertical ? WebScrollbar::Vertical : WebScrollbar::Horizontal, |
| plugin_instance->container(), |
| static_cast<WebKit::WebPluginScrollbarClient*>(this))); |
| } |
| |
| PPB_Scrollbar_API* PPB_Scrollbar_Impl::AsPPB_Scrollbar_API() { |
| return this; |
| } |
| |
| void PPB_Scrollbar_Impl::InstanceWasDeleted() { |
| scrollbar_.reset(); |
| } |
| |
| uint32_t PPB_Scrollbar_Impl::GetThickness() { |
| return WebPluginScrollbar::defaultThickness(); |
| } |
| |
| bool PPB_Scrollbar_Impl::IsOverlay() { |
| return scrollbar_->isOverlay(); |
| } |
| |
| uint32_t PPB_Scrollbar_Impl::GetValue() { |
| return scrollbar_->value(); |
| } |
| |
| void PPB_Scrollbar_Impl::SetValue(uint32_t value) { |
| if (scrollbar_) |
| scrollbar_->setValue(value); |
| } |
| |
| void PPB_Scrollbar_Impl::SetDocumentSize(uint32_t size) { |
| if (scrollbar_) |
| scrollbar_->setDocumentSize(size); |
| } |
| |
| void PPB_Scrollbar_Impl::SetTickMarks(const PP_Rect* tick_marks, |
| uint32_t count) { |
| if (!scrollbar_) |
| return; |
| tickmarks_.resize(count); |
| for (uint32 i = 0; i < count; ++i) { |
| tickmarks_[i] = WebRect(tick_marks[i].point.x, |
| tick_marks[i].point.y, |
| tick_marks[i].size.width, |
| tick_marks[i].size.height);; |
| } |
| PP_Rect rect = location(); |
| Invalidate(&rect); |
| } |
| |
| void PPB_Scrollbar_Impl::ScrollBy(PP_ScrollBy_Dev unit, int32_t multiplier) { |
| if (!scrollbar_) |
| return; |
| |
| WebScrollbar::ScrollDirection direction = multiplier >= 0 ? |
| WebScrollbar::ScrollForward : WebScrollbar::ScrollBackward; |
| float fmultiplier = 1.0; |
| |
| WebScrollbar::ScrollGranularity granularity; |
| if (unit == PP_SCROLLBY_LINE) { |
| granularity = WebScrollbar::ScrollByLine; |
| } else if (unit == PP_SCROLLBY_PAGE) { |
| granularity = WebScrollbar::ScrollByPage; |
| } else if (unit == PP_SCROLLBY_DOCUMENT) { |
| granularity = WebScrollbar::ScrollByDocument; |
| } else { |
| granularity = WebScrollbar::ScrollByPixel; |
| fmultiplier = static_cast<float>(multiplier); |
| if (fmultiplier < 0) |
| fmultiplier *= -1; |
| } |
| scrollbar_->scroll(direction, granularity, fmultiplier); |
| } |
| |
| PP_Bool PPB_Scrollbar_Impl::PaintInternal(const gfx::Rect& rect, |
| PPB_ImageData_Impl* image) { |
| ImageDataAutoMapper mapper(image); |
| skia::PlatformCanvas* canvas = image->GetPlatformCanvas(); |
| if (!canvas || !scrollbar_) |
| return PP_FALSE; |
| canvas->save(); |
| canvas->scale(scale(), scale()); |
| scrollbar_->paint(canvas, rect); |
| canvas->restore(); |
| |
| #if defined(OS_WIN) |
| if (base::win::GetVersion() == base::win::VERSION_XP) |
| skia::MakeOpaque(canvas, rect.x(), rect.y(), rect.width(), rect.height()); |
| #endif |
| |
| return PP_TRUE; |
| } |
| |
| PP_Bool PPB_Scrollbar_Impl::HandleEventInternal( |
| const ::ppapi::InputEventData& data) { |
| scoped_ptr<WebInputEvent> web_input_event(CreateWebInputEvent(data)); |
| if (!web_input_event.get() || !scrollbar_) |
| return PP_FALSE; |
| |
| return PP_FromBool(scrollbar_->handleInputEvent(*web_input_event.get())); |
| } |
| |
| void PPB_Scrollbar_Impl::SetLocationInternal(const PP_Rect* location) { |
| if (!scrollbar_) |
| return; |
| scrollbar_->setLocation(WebRect(location->point.x, |
| location->point.y, |
| location->size.width, |
| location->size.height)); |
| } |
| |
| void PPB_Scrollbar_Impl::valueChanged(WebKit::WebPluginScrollbar* scrollbar) { |
| PluginModule* plugin_module = |
| HostGlobals::Get()->GetInstance(pp_instance())->module(); |
| if (!plugin_module) |
| return; |
| |
| const PPP_Scrollbar_Dev* ppp_scrollbar = |
| static_cast<const PPP_Scrollbar_Dev*>(plugin_module->GetPluginInterface( |
| PPP_SCROLLBAR_DEV_INTERFACE)); |
| if (!ppp_scrollbar) { |
| // Try the old version. This is ok because the old interface is a subset of |
| // the new one, and ValueChanged didn't change. |
| ppp_scrollbar = |
| static_cast<const PPP_Scrollbar_Dev*>(plugin_module->GetPluginInterface( |
| PPP_SCROLLBAR_DEV_INTERFACE_0_2)); |
| if (!ppp_scrollbar) |
| return; |
| } |
| ppp_scrollbar->ValueChanged(pp_instance(), pp_resource(), |
| scrollbar_->value()); |
| } |
| |
| void PPB_Scrollbar_Impl::overlayChanged(WebPluginScrollbar* scrollbar) { |
| PluginModule* plugin_module = |
| HostGlobals::Get()->GetInstance(pp_instance())->module(); |
| if (!plugin_module) |
| return; |
| |
| const PPP_Scrollbar_Dev* ppp_scrollbar = |
| static_cast<const PPP_Scrollbar_Dev*>(plugin_module->GetPluginInterface( |
| PPP_SCROLLBAR_DEV_INTERFACE)); |
| if (!ppp_scrollbar) |
| return; |
| ppp_scrollbar->OverlayChanged(pp_instance(), pp_resource(), |
| PP_FromBool(IsOverlay())); |
| } |
| |
| void PPB_Scrollbar_Impl::invalidateScrollbarRect( |
| WebKit::WebPluginScrollbar* scrollbar, |
| const WebKit::WebRect& rect) { |
| gfx::Rect gfx_rect(rect.x, |
| rect.y, |
| rect.width, |
| rect.height); |
| dirty_.Union(gfx_rect); |
| // Can't call into the client to tell them about the invalidate right away, |
| // since the PPB_Scrollbar_Impl code is still in the middle of updating its |
| // internal state. |
| // Note: we use a WeakPtrFactory here so that a lingering callback can not |
| // modify the lifetime of this object. Otherwise, WebKit::WebPluginScrollbar |
| // could outlive WebKit::WebPluginContainer, which is against its contract. |
| base::MessageLoop::current()->PostTask( |
| FROM_HERE, |
| base::Bind(&PPB_Scrollbar_Impl::NotifyInvalidate, |
| weak_ptr_factory_.GetWeakPtr())); |
| } |
| |
| void PPB_Scrollbar_Impl::getTickmarks( |
| WebKit::WebPluginScrollbar* scrollbar, |
| WebKit::WebVector<WebKit::WebRect>* tick_marks) const { |
| if (tickmarks_.empty()) { |
| WebRect* rects = NULL; |
| tick_marks->assign(rects, 0); |
| } else { |
| tick_marks->assign(&tickmarks_[0], tickmarks_.size()); |
| } |
| } |
| |
| void PPB_Scrollbar_Impl::NotifyInvalidate() { |
| if (dirty_.IsEmpty()) |
| return; |
| PP_Rect pp_rect; |
| pp_rect.point.x = dirty_.x(); |
| pp_rect.point.y = dirty_.y(); |
| pp_rect.size.width = dirty_.width(); |
| pp_rect.size.height = dirty_.height(); |
| dirty_ = gfx::Rect(); |
| Invalidate(&pp_rect); |
| } |
| |
| } // namespace content |