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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/renderer/pepper_widget.h"
#include "base/hash_tables.h"
#include "base/lazy_instance.h"
#include "chrome/renderer/pepper_scrollbar_widget.h"
#include "chrome/renderer/webplugin_delegate_pepper.h"
#include "skia/ext/platform_canvas.h"
#include "webkit/glue/plugins/plugin_instance.h"
#include "webkit/glue/plugins/webplugin.h"
#include "webkit/glue/plugins/webplugin_delegate.h"
#if defined(OS_WIN)
#include "base/win_util.h"
#endif
static int g_next_id;
typedef base::hash_map<int, PepperWidget*> WidgetMap;
static base::LazyInstance<WidgetMap> g_widgets(base::LINKER_INITIALIZED);
NPError NPCreateWidget(NPP instance,
NPWidgetType type,
void* params,
NPWidgetID* id) {
PepperWidget* widget;
switch (type) {
case NPWidgetTypeScrollbar:
widget = new PepperScrollbarWidget(
*static_cast<NPScrollbarCreateParams*>(params));
break;
default:
return NPERR_INVALID_PARAM;
}
*id = ++g_next_id;
widget->Init(instance, *id);
return NPERR_NO_ERROR;
}
NPError NPDestroyWidget(NPP instance, NPWidgetID id) {
WidgetMap::iterator iter = g_widgets.Get().find(id);
if (iter == g_widgets.Get().end())
return NPERR_INVALID_PARAM;
iter->second->Destroy();
return NPERR_NO_ERROR;
}
NPError NPPaintWidget(NPP instance,
NPWidgetID id,
NPDeviceContext2D* context,
NPRect* dirty) {
WidgetMap::iterator iter = g_widgets.Get().find(id);
if (iter == g_widgets.Get().end())
return NPERR_INVALID_PARAM;
NPAPI::PluginInstance* plugin =
static_cast<NPAPI::PluginInstance*>(instance->ndata);
WebPluginDelegatePepper* delegate =
static_cast<WebPluginDelegatePepper*>(plugin->webplugin()->delegate());
Graphics2DDeviceContext* gdc = delegate->GetGraphicsContext(context);
iter->second->Paint(gdc, *dirty);
#if defined(OS_WIN)
if (win_util::GetWinVersion() == win_util::WINVERSION_XP) {
gdc->canvas()->getTopPlatformDevice().makeOpaque(
dirty->left, dirty->top, dirty->right - dirty->left,
dirty->bottom - dirty->top);
}
#endif
return NPERR_NO_ERROR;
}
bool NPHandleWidgetEvent(NPP instance, NPWidgetID id, NPPepperEvent* event) {
WidgetMap::iterator iter = g_widgets.Get().find(id);
if (iter == g_widgets.Get().end())
return false;
return iter->second->HandleEvent(*event);
}
NPError NPGetWidgetProperty(NPP instance,
NPWidgetID id,
NPWidgetProperty property,
void* value) {
WidgetMap::iterator iter = g_widgets.Get().find(id);
if (iter == g_widgets.Get().end())
return NPERR_INVALID_PARAM;
iter->second->GetProperty(property, value);
return NPERR_NO_ERROR;
}
NPError NPSetWidgetProperty(NPP instance,
NPWidgetID id,
NPWidgetProperty property,
void* value) {
WidgetMap::iterator iter = g_widgets.Get().find(id);
if (iter == g_widgets.Get().end())
return NPERR_INVALID_PARAM;
iter->second->SetProperty(property, value);
return NPERR_NO_ERROR;
}
NPWidgetExtensions g_widget_extensions = {
NPCreateWidget,
NPDestroyWidget,
NPPaintWidget,
NPHandleWidgetEvent,
NPGetWidgetProperty,
NPSetWidgetProperty
};
// static
NPWidgetExtensions* PepperWidget::GetWidgetExtensions() {
return &g_widget_extensions;
}
PepperWidget::PepperWidget() : instance_(NULL), id_(0) {
}
PepperWidget::~PepperWidget() {
if (id_)
g_widgets.Get().erase(id_);
}
void PepperWidget::Init(NPP instance, int id) {
instance_ = instance;
id_ = id;
g_widgets.Get()[id] = this;
}
void PepperWidget::WidgetPropertyChanged(NPWidgetProperty property) {
NPAPI::PluginInstance* instance =
static_cast<NPAPI::PluginInstance*>(instance_->ndata);
NPPExtensions* extensions = NULL;
instance->NPP_GetValue(NPPVPepperExtensions, &extensions);
if (!extensions)
return;
extensions->widgetPropertyChanged(instance_, id_, property);
}
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