[DevTools] Emulate hover and pointer types.

Source/web/DevToolsEmulator.cpp

 // Copyright 2015 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 "web/DevToolsEmulator.h"
 
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/Settings.h"
@@ skipping 44 matching lines @@
     , m_deviceMetricsEnabled(false)
     , m_emulateMobileEnabled(false)
     , m_isOverlayScrollbarsEnabled(false)
     , m_originalDefaultMinimumPageScaleFactor(0)
     , m_originalDefaultMaximumPageScaleFactor(0)
     , m_embedderTextAutosizingEnabled(webViewImpl->page()->settings().textAutosizingEnabled())
     , m_embedderDeviceScaleAdjustment(webViewImpl->page()->settings().deviceScaleAdjustment())
     , m_embedderPreferCompositingToLCDTextEnabled(webViewImpl->page()->settings().preferCompositingToLCDTextEnabled())
     , m_embedderUseMobileViewport(webViewImpl->page()->settings().useMobileViewportStyle())
     , m_embedderPluginsEnabled(webViewImpl->page()->settings().pluginsEnabled())
+    , m_embedderAvailablePointerTypes(webViewImpl->page()->settings().availableHoverTypes())

[mustaq, 2015/09/15 14:29:03]

s/Hover/Pointer/

[dgozman, 2015/09/15 18:18:05]

Ops. Done.

+    , m_embedderPrimaryPointerType(webViewImpl->page()->settings().primaryPointerType())
+    , m_embedderAvailableHoverTypes(webViewImpl->page()->settings().availableHoverTypes())
+    , m_embedderPrimaryHoverType(webViewImpl->page()->settings().primaryHoverType())
     , m_touchEventEmulationEnabled(false)
     , m_doubleTapToZoomEnabled(false)
     , m_originalTouchEnabled(false)
     , m_originalDeviceSupportsMouse(false)
     , m_originalDeviceSupportsTouch(false)
     , m_originalMaxTouchPoints(0)
     , m_embedderScriptEnabled(webViewImpl->page()->settings().scriptEnabled())
     , m_scriptExecutionDisabled(false)
     , m_hidePinchScrollbarsNearMinScale(false)
 {
@@ skipping 81 matching lines @@
     return m_touchEventEmulationEnabled ? true : m_doubleTapToZoomEnabled;
 }
 
 void DevToolsEmulator::setHidePinchScrollbarsNearMinScale(bool enabled)
 {
     m_hidePinchScrollbarsNearMinScale = enabled;
     if (m_webViewImpl->layerTreeView())
         m_webViewImpl->layerTreeView()->setHidePinchScrollbarsNearMinScale(enabled);
 }
 
+void DevToolsEmulator::setAvailablePointerTypes(int types)
+{
+    m_embedderAvailablePointerTypes = types;
+    bool emulateMobileEnabled = m_deviceMetricsEnabled && m_emulateMobileEnabled;
+    if (!emulateMobileEnabled)
+        m_webViewImpl->page()->settings().setAvailablePointerTypes(types);
+}
+
+void DevToolsEmulator::setPrimaryPointerType(PointerType pointerType)
+{
+    m_embedderPrimaryPointerType = pointerType;
+    bool emulateMobileEnabled = m_deviceMetricsEnabled && m_emulateMobileEnabled;
+    if (!emulateMobileEnabled)
+        m_webViewImpl->page()->settings().setPrimaryPointerType(pointerType);
+}
+
+void DevToolsEmulator::setAvailableHoverTypes(int types)
+{
+    m_embedderAvailableHoverTypes = types;
+    bool emulateMobileEnabled = m_deviceMetricsEnabled && m_emulateMobileEnabled;
+    if (!emulateMobileEnabled)
+        m_webViewImpl->page()->settings().setAvailableHoverTypes(types);
+}
+
+void DevToolsEmulator::setPrimaryHoverType(HoverType hoverType)
+{
+    m_embedderPrimaryHoverType = hoverType;
+    bool emulateMobileEnabled = m_deviceMetricsEnabled && m_emulateMobileEnabled;
+    if (!emulateMobileEnabled)
+        m_webViewImpl->page()->settings().setPrimaryHoverType(hoverType);
+}
+
+int DevToolsEmulator::availablePointerTypes()
+{
+    return m_embedderAvailablePointerTypes;

[mustaq, 2015/09/15 14:29:03]

I think the getters should behave similarly to the setters here, right? I mean
they should return emulated values when mobile emulation is enabled?

[dgozman, 2015/09/15 18:18:05]

That's a tricky question. When mobile emulation is enabled, any call to setXXX
will be essentially ignored (since emulated value is used). That means getter
will return value different from what was set, which is confusing for the
client.

I'm actually surprised we have getters for settings. That's not a common
pattern, and I've found the only use among these 4 in the whole codebase. Should
we remove them instead?

[mustaq, 2015/09/16 13:47:08]

Yes, I think removing them makes sense since they are unused. Thanks.

+}
+
+PointerType DevToolsEmulator::primaryPointerType()
+{
+    return m_embedderPrimaryPointerType;
+}
+
+int DevToolsEmulator::availableHoverTypes()
+{
+    return m_embedderAvailableHoverTypes;
+}
+
+HoverType DevToolsEmulator::primaryHoverType()
+{
+    return m_embedderPrimaryHoverType;
+}
+
 void DevToolsEmulator::enableDeviceEmulation(const WebDeviceEmulationParams& params)
 {
     if (!m_deviceMetricsEnabled) {
         m_deviceMetricsEnabled = true;
         m_webViewImpl->setBackgroundColorOverride(Color::darkGray);
         m_webViewImpl->updateShowFPSCounter();
     }
 
     m_webViewImpl->page()->settings().setDeviceScaleAdjustment(calculateDeviceScaleAdjustment(params.viewSize.width, params.viewSize.height, params.deviceScaleFactor));
 
@@ skipping 33 matching lines @@
     m_isOverlayScrollbarsEnabled = RuntimeEnabledFeatures::overlayScrollbarsEnabled();
     RuntimeEnabledFeatures::setOverlayScrollbarsEnabled(true);
     m_webViewImpl->enableViewport();
     m_webViewImpl->settings()->setViewportMetaEnabled(true);
     m_webViewImpl->page()->frameHost().visualViewport().initializeScrollbars();
     m_webViewImpl->settings()->setShrinksViewportContentToFit(true);
     m_webViewImpl->page()->settings().setTextAutosizingEnabled(true);
     m_webViewImpl->page()->settings().setPreferCompositingToLCDTextEnabled(true);
     m_webViewImpl->page()->settings().setUseMobileViewportStyle(true);
     m_webViewImpl->page()->settings().setPluginsEnabled(false);
+    m_webViewImpl->page()->settings().setAvailablePointerTypes(PointerTypeCoarse);
+    m_webViewImpl->page()->settings().setPrimaryPointerType(PointerTypeCoarse);
+    m_webViewImpl->page()->settings().setAvailableHoverTypes(HoverTypeOnDemand);
+    m_webViewImpl->page()->settings().setPrimaryHoverType(HoverTypeOnDemand);
     m_webViewImpl->setZoomFactorOverride(1);
 
     m_originalDefaultMinimumPageScaleFactor = m_webViewImpl->defaultMinimumPageScaleFactor();
     m_originalDefaultMaximumPageScaleFactor = m_webViewImpl->defaultMaximumPageScaleFactor();
     m_webViewImpl->setDefaultPageScaleLimits(0.25f, 5);
 }
 
 void DevToolsEmulator::disableMobileEmulation()
 {
     if (!m_emulateMobileEnabled)
         return;
     RuntimeEnabledFeatures::setOverlayScrollbarsEnabled(m_isOverlayScrollbarsEnabled);
     m_webViewImpl->disableViewport();
     m_webViewImpl->settings()->setViewportMetaEnabled(false);
     m_webViewImpl->page()->frameHost().visualViewport().initializeScrollbars();
     m_webViewImpl->settings()->setShrinksViewportContentToFit(false);
     m_webViewImpl->page()->settings().setTextAutosizingEnabled(m_embedderTextAutosizingEnabled);
     m_webViewImpl->page()->settings().setPreferCompositingToLCDTextEnabled(m_embedderPreferCompositingToLCDTextEnabled);
     m_webViewImpl->page()->settings().setUseMobileViewportStyle(m_embedderUseMobileViewport);
     m_webViewImpl->page()->settings().setPluginsEnabled(m_embedderPluginsEnabled);
+    m_webViewImpl->page()->settings().setAvailablePointerTypes(m_embedderAvailablePointerTypes);
+    m_webViewImpl->page()->settings().setPrimaryPointerType(m_embedderPrimaryPointerType);
+    m_webViewImpl->page()->settings().setAvailableHoverTypes(m_embedderAvailableHoverTypes);
+    m_webViewImpl->page()->settings().setPrimaryHoverType(m_embedderPrimaryHoverType);
     m_webViewImpl->setZoomFactorOverride(0);
     m_emulateMobileEnabled = false;
     m_webViewImpl->setDefaultPageScaleLimits(
         m_originalDefaultMinimumPageScaleFactor,
         m_originalDefaultMaximumPageScaleFactor);
 }
 
 void DevToolsEmulator::setTouchEventEmulationEnabled(bool enabled)
 {
     if (m_touchEventEmulationEnabled == enabled)
@@ skipping 50 matching lines @@
             m_lastPinchAnchorCss.clear();
             m_lastPinchAnchorDip.clear();
         }
         return true;
     }
 
     return false;
 }
 
 } // namespace blink