Index: Source/core/html/canvas/HitRegion.cpp |
diff --git a/Source/core/html/canvas/HitRegion.cpp b/Source/core/html/canvas/HitRegion.cpp |
new file mode 100644 |
index 0000000000000000000000000000000000000000..4d17cae28f9b4276d64aee158e6732f2056220d6 |
--- /dev/null |
+++ b/Source/core/html/canvas/HitRegion.cpp |
@@ -0,0 +1,147 @@ |
+// Copyright 2014 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 "config.h" |
+#include "core/html/canvas/HitRegion.h" |
+ |
+#include "core/accessibility/AXObject.h" |
+#include "core/accessibility/AXObjectCache.h" |
+ |
+namespace WebCore { |
+ |
+HitRegion::HitRegion(const HitRegionOptions& options) |
+ : m_id(options.id) |
+ , m_control(options.control) |
+ , m_path(options.path) |
+{ |
+} |
+ |
+void HitRegion::updateAccessibility(Element* canvas) |
+{ |
+ if (!m_control || !canvas || !canvas->renderer() || !m_control->isDescendantOf(canvas)) |
+ return; |
+ |
+ if (AXObjectCache* axObjectCache = m_control->document().existingAXObjectCache()) { |
+ if (AXObject* obj = axObjectCache->getOrCreate(m_control.get())) { |
dmazzoni
2014/06/03 17:26:10
Let's move some of this logic to a new function on
zino
2014/06/08 08:39:49
Done.
|
+ LayoutRect elementRect = LayoutRect(m_path.boundingRect()); |
+ |
+ IntRect canvasRect = canvas->renderer()->absoluteBoundingBoxRect(); |
+ elementRect.moveBy(canvasRect.location()); |
+ obj->setElementRect(elementRect); |
+ |
+ obj = obj->parentObject(); |
+ while (obj && obj->node() != canvas) { |
+ obj->setElementRect(elementRect); |
fs
2014/06/03 11:47:01
This might be better answered by dmazzoni, but thi
dmazzoni
2014/06/03 17:26:10
Ideally it seems like we'd want container element
fs
2014/06/04 08:13:40
Computing on-demand SGTM.
zino
2014/06/08 08:39:49
Done.
|
+ obj = obj->parentObject(); |
+ } |
+ } |
+ } |
+} |
+ |
+bool HitRegion::contains(const LayoutPoint& point) const |
+{ |
+ // FIXME: We should avoid following boundingRect test if fillRule is evenodd. |
fs
2014/06/03 11:47:01
Why? AFAICT this broad-phase check is equally good
zino
2014/06/06 06:35:16
You're right.
Done.
|
+ if (!m_path.boundingRect().contains(point)) |
+ return false; |
+ |
+ return m_path.contains(point, RULE_NONZERO); |
+} |
+ |
+void HitRegion::removePixels(const Path& clearArea) |
+{ |
+ m_path.subtractPath(clearArea); |
+} |
+ |
+void HitRegionManager::addHitRegion(PassRefPtrWillBeRawPtr<HitRegion> passHitRegion) |
+{ |
+ RefPtrWillBeRawPtr<HitRegion> hitRegion = passHitRegion; |
+ |
+ m_hitRegionList.add(hitRegion); |
+ |
+ if (!hitRegion->id().isEmpty()) |
+ m_hitRegionIdMap.set(hitRegion->id(), hitRegion); |
+ |
+ if (hitRegion->control()) |
+ m_hitRegionControlMap.set(hitRegion->control(), hitRegion); |
+} |
+ |
+void HitRegionManager::removeHitRegion(HitRegion* hitRegion) |
+{ |
+ if (!hitRegion) |
+ return; |
+ |
+ if (!hitRegion->id().isEmpty()) |
+ m_hitRegionIdMap.remove(hitRegion->id()); |
+ |
+ if (hitRegion->control()) |
+ m_hitRegionControlMap.remove(hitRegion->control()); |
+ |
+ m_hitRegionList.remove(hitRegion); |
+} |
+ |
+void HitRegionManager::removeHitRegionById(const String& id) |
+{ |
+ if (!id.isEmpty()) |
+ removeHitRegion(getHitRegionById(id)); |
+} |
+ |
+void HitRegionManager::removeHitRegionByControl(const Element* control) |
+{ |
+ removeHitRegion(getHitRegionByControl(control)); |
+} |
+ |
+void HitRegionManager::removeHitRegionsInRect(const FloatRect& rect, const AffineTransform& ctm) |
+{ |
+ Path clearArea; |
+ clearArea.addRect(rect); |
+ clearArea.transform(ctm); |
+ |
+ HitRegionIterator itEnd = m_hitRegionList.rend(); |
+ |
+ for (HitRegionIterator it = m_hitRegionList.rbegin(); it != itEnd; ++it) { |
+ RefPtrWillBeRawPtr<HitRegion> hitRegion = *it; |
+ hitRegion->removePixels(clearArea); |
+ if (hitRegion->path().isEmpty()) |
+ removeHitRegion(hitRegion.get()); |
+ } |
+} |
+ |
+void HitRegionManager::removeAllHitRegions() |
+{ |
+ m_hitRegionList.clear(); |
+ m_hitRegionIdMap.clear(); |
+} |
+ |
+HitRegion* HitRegionManager::getHitRegionById(const String& id) const |
+{ |
+ return m_hitRegionIdMap.get(id); |
+} |
+ |
+HitRegion* HitRegionManager::getHitRegionByControl(const Element* control) const |
+{ |
+ if (control) |
+ return m_hitRegionControlMap.get(control); |
+ |
+ return 0; |
+} |
+ |
+HitRegion* HitRegionManager::getHitRegionAtPoint(const LayoutPoint& point) const |
+{ |
+ HitRegionIterator itEnd = m_hitRegionList.rend(); |
+ |
+ for (HitRegionIterator it = m_hitRegionList.rbegin(); it != itEnd; ++it) { |
+ RefPtrWillBeRawPtr<HitRegion> hitRegion = *it; |
+ if (hitRegion->contains(point)) |
+ return hitRegion.get(); |
+ } |
+ |
+ return 0; |
+} |
+ |
+unsigned HitRegionManager::getHitRegionsCount() const |
+{ |
+ return m_hitRegionList.size(); |
+} |
+ |
+} // namespace WebCore |