Index: third_party/WebKit/Source/modules/notifications/NotificationResourcesLoader.cpp |
diff --git a/third_party/WebKit/Source/modules/notifications/NotificationResourcesLoader.cpp b/third_party/WebKit/Source/modules/notifications/NotificationResourcesLoader.cpp |
new file mode 100644 |
index 0000000000000000000000000000000000000000..15067b3b196c52f6b660687f3b0e5f7a2a5b4d9e |
--- /dev/null |
+++ b/third_party/WebKit/Source/modules/notifications/NotificationResourcesLoader.cpp |
@@ -0,0 +1,134 @@ |
+// Copyright 2016 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 "modules/notifications/NotificationResourcesLoader.h" |
+ |
+#include "platform/weborigin/KURL.h" |
+#include "public/platform/modules/notifications/WebNotificationData.h" |
+#include "public/platform/modules/notifications/WebNotificationResources.h" |
+#include "skia/ext/image_operations.h" |
+#include "third_party/skia/include/core/SkBitmap.h" |
+ |
+namespace blink { |
+ |
+namespace { |
+ |
+// TODO(mvanouwerkerk): Get icon dimensions from the embedder. |
+ |
+// The maximum reasonable notification icon size, scaled from dip units to |
+// pixels using the largest supported scaling factor. |
+static const int kMaxIconSizePx = 320; // 80 dip * 4 |
+ |
+// The maximum reasonable badge size, scaled from dip units to pixels using the |
+// largest supported scaling factor. |
+static const int kMaxBadgeSizePx = 96; // 24 dip * 4 |
+ |
+// The maximum reasonable action icon size, scaled from dip units to pixels |
+// using the largest supported scaling factor. |
+static const int kMaxActionIconSizePx = 128; // 32 dip * 4 |
+ |
+// Scales down |image| to fit within |maxSizePx| if its width or height is |
+// larger than |maxSizePx| and returns the result. Otherwise does nothing and |
+// returns |image| unchanged. |
+// TODO(mvanouwerkerk): Explore doing the scaling on a background thread. |
+SkBitmap scaleDownIfNeeded(const SkBitmap& image, int maxSizePx) |
+{ |
+ if (image.width() > maxSizePx || image.height() > maxSizePx) |
+ return skia::ImageOperations::Resize(image, skia::ImageOperations::RESIZE_BEST, std::min(image.width(), maxSizePx), std::min(image.height(), maxSizePx)); |
+ return image; |
+} |
+ |
+} // namespace |
+ |
+NotificationResourcesLoader::NotificationResourcesLoader(PassOwnPtr<CompletionCallback> completionCallback) |
+ : m_started(false), m_completionCallback(completionCallback), m_pendingRequestCount(0) |
+{ |
+ ThreadState::current()->registerPreFinalizer(this); |
+ DCHECK(m_completionCallback); |
+} |
+ |
+NotificationResourcesLoader::~NotificationResourcesLoader() |
+{ |
+} |
+ |
+void NotificationResourcesLoader::start(ExecutionContext* executionContext, const WebNotificationData& notificationData) |
+{ |
+ DCHECK(!m_started); |
+ m_started = true; |
+ |
+ size_t numActions = notificationData.actions.size(); |
+ m_pendingRequestCount = 2 /* icon and badge */ + numActions; |
+ |
+ loadImage(executionContext, notificationData.icon, bind<const SkBitmap&>(&NotificationResourcesLoader::didLoadIcon, WeakPersistentThisPointer<NotificationResourcesLoader>(this))); |
+ loadImage(executionContext, notificationData.badge, bind<const SkBitmap&>(&NotificationResourcesLoader::didLoadBadge, WeakPersistentThisPointer<NotificationResourcesLoader>(this))); |
+ |
+ m_actionIcons.resize(numActions); |
+ for (size_t i = 0; i < numActions; i++) |
+ loadImage(executionContext, notificationData.actions[i].icon, bind<const SkBitmap&>(&NotificationResourcesLoader::didLoadActionIcon, WeakPersistentThisPointer<NotificationResourcesLoader>(this), i)); |
+} |
+ |
+std::unique_ptr<WebNotificationResources> NotificationResourcesLoader::getResources() const |
+{ |
+ std::unique_ptr<WebNotificationResources> resources(new WebNotificationResources()); |
+ resources->icon = m_icon; |
+ resources->badge = m_badge; |
+ resources->actionIcons = m_actionIcons; |
+ return resources; |
+} |
+ |
+void NotificationResourcesLoader::stop() |
+{ |
+ for (auto imageLoader : m_imageLoaders) |
+ imageLoader->stop(); |
haraken
2016/04/19 01:12:52
Would it be better to clear m_imageLoaders to avoi
Michael van Ouwerkerk
2016/04/19 09:47:31
Not sure, as there is already a guard in that stop
|
+} |
+ |
+DEFINE_TRACE(NotificationResourcesLoader) |
+{ |
+ visitor->trace(m_imageLoaders); |
+} |
+ |
+void NotificationResourcesLoader::loadImage(ExecutionContext* executionContext, const KURL& url, PassOwnPtr<NotificationImageLoader::ImageCallback> imageCallback) |
+{ |
+ if (url.isNull() || url.isEmpty() || !url.isValid()) { |
+ didFinishRequest(); |
+ return; |
+ } |
+ |
+ NotificationImageLoader* imageLoader = new NotificationImageLoader(); |
+ m_imageLoaders.append(imageLoader); |
+ imageLoader->start(executionContext, url, imageCallback); |
+} |
+ |
+void NotificationResourcesLoader::didLoadIcon(const SkBitmap& image) |
+{ |
+ m_icon = scaleDownIfNeeded(image, kMaxIconSizePx); |
+ didFinishRequest(); |
+} |
+ |
+void NotificationResourcesLoader::didLoadBadge(const SkBitmap& image) |
+{ |
+ m_badge = scaleDownIfNeeded(image, kMaxBadgeSizePx); |
+ didFinishRequest(); |
+} |
+ |
+void NotificationResourcesLoader::didLoadActionIcon(size_t actionIndex, const SkBitmap& image) |
+{ |
+ DCHECK_LT(actionIndex, m_actionIcons.size()); |
+ |
+ m_actionIcons[actionIndex] = scaleDownIfNeeded(image, kMaxActionIconSizePx); |
+ didFinishRequest(); |
+} |
+ |
+void NotificationResourcesLoader::didFinishRequest() |
+{ |
+ DCHECK_GT(m_pendingRequestCount, 0); |
+ m_pendingRequestCount--; |
+ if (!m_pendingRequestCount) { |
+ stop(); |
+ (*m_completionCallback)(this); |
+ // The |this| pointer may have been deleted now. |
+ } |
+} |
+ |
+} // namespace blink |