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Diffstat (limited to 'widget/headless/HeadlessWidget.h')
| -rw-r--r-- | widget/headless/HeadlessWidget.h | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/widget/headless/HeadlessWidget.h b/widget/headless/HeadlessWidget.h new file mode 100644 index 0000000000..9856991ef3 --- /dev/null +++ b/widget/headless/HeadlessWidget.h @@ -0,0 +1,182 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef HEADLESSWIDGET_H +#define HEADLESSWIDGET_H + +#include "mozilla/widget/InProcessCompositorWidget.h" +#include "nsBaseWidget.h" +#include "CompositorWidget.h" +#include "mozilla/dom/WheelEventBinding.h" + +// The various synthesized event values are hardcoded to avoid pulling +// in the platform specific widget code. +#if defined(MOZ_WIDGET_GTK) +# define MOZ_HEADLESS_SCROLL_MULTIPLIER 3 +# define MOZ_HEADLESS_SCROLL_DELTA_MODE \ + mozilla::dom::WheelEvent_Binding::DOM_DELTA_LINE +#elif defined(XP_WIN) +# define MOZ_HEADLESS_SCROLL_MULTIPLIER \ + .025 // default scroll lines (3) / WHEEL_DELTA (120) +# define MOZ_HEADLESS_SCROLL_DELTA_MODE \ + mozilla::dom::WheelEvent_Binding::DOM_DELTA_LINE +#elif defined(XP_MACOSX) +# define MOZ_HEADLESS_SCROLL_MULTIPLIER 1 +# define MOZ_HEADLESS_SCROLL_DELTA_MODE \ + mozilla::dom::WheelEvent_Binding::DOM_DELTA_PIXEL +#elif defined(ANDROID) +# define MOZ_HEADLESS_SCROLL_MULTIPLIER 1 +# define MOZ_HEADLESS_SCROLL_DELTA_MODE \ + mozilla::dom::WheelEvent_Binding::DOM_DELTA_LINE +#else +# define MOZ_HEADLESS_SCROLL_MULTIPLIER -1 +# define MOZ_HEADLESS_SCROLL_DELTA_MODE -1 +#endif + +namespace mozilla { +enum class NativeKeyBindingsType : uint8_t; +namespace widget { + +class HeadlessWidget : public nsBaseWidget { + public: + HeadlessWidget(); + + NS_INLINE_DECL_REFCOUNTING_INHERITED(HeadlessWidget, nsBaseWidget) + + void* GetNativeData(uint32_t aDataType) override { + // Headless widgets have no native data. + return nullptr; + } + + virtual nsresult Create(nsIWidget* aParent, nsNativeWidget aNativeParent, + const LayoutDeviceIntRect& aRect, + widget::InitData* aInitData = nullptr) override; + using nsBaseWidget::Create; // for Create signature not overridden here + virtual already_AddRefed<nsIWidget> CreateChild( + const LayoutDeviceIntRect& aRect, widget::InitData* aInitData = nullptr, + bool aForceUseIWidgetParent = false) override; + + virtual nsIWidget* GetTopLevelWidget() override; + + virtual void GetCompositorWidgetInitData( + mozilla::widget::CompositorWidgetInitData* aInitData) override; + + virtual void Destroy() override; + virtual void Show(bool aState) override; + virtual bool IsVisible() const override; + virtual void Move(double aX, double aY) override; + virtual void Resize(double aWidth, double aHeight, bool aRepaint) override; + virtual void Resize(double aX, double aY, double aWidth, double aHeight, + bool aRepaint) override; + virtual nsSizeMode SizeMode() override { return mSizeMode; } + virtual void SetSizeMode(nsSizeMode aMode) override; + virtual nsresult MakeFullScreen(bool aFullScreen) override; + virtual void Enable(bool aState) override; + virtual bool IsEnabled() const override; + virtual void SetFocus(Raise, mozilla::dom::CallerType aCallerType) override; + virtual void Invalidate(const LayoutDeviceIntRect& aRect) override { + // TODO: see if we need to do anything here. + } + virtual nsresult SetTitle(const nsAString& title) override { + // Headless widgets have no title, so just ignore it. + return NS_OK; + } + virtual nsresult SetNonClientMargins( + const LayoutDeviceIntMargin& margins) override { + // Headless widgets have no chrome margins, so just ignore the call. + return NS_OK; + } + virtual LayoutDeviceIntPoint WidgetToScreenOffset() override; + virtual void SetInputContext(const InputContext& aContext, + const InputContextAction& aAction) override { + mInputContext = aContext; + } + virtual InputContext GetInputContext() override { return mInputContext; } + + virtual WindowRenderer* GetWindowRenderer() override; + + void SetCompositorWidgetDelegate(CompositorWidgetDelegate* delegate) override; + + [[nodiscard]] virtual nsresult AttachNativeKeyEvent( + WidgetKeyboardEvent& aEvent) override; + MOZ_CAN_RUN_SCRIPT virtual bool GetEditCommands( + NativeKeyBindingsType aType, const WidgetKeyboardEvent& aEvent, + nsTArray<CommandInt>& aCommands) override; + + virtual nsresult DispatchEvent(WidgetGUIEvent* aEvent, + nsEventStatus& aStatus) override; + + virtual nsresult SynthesizeNativeMouseEvent( + LayoutDeviceIntPoint aPoint, NativeMouseMessage aNativeMessage, + mozilla::MouseButton aButton, nsIWidget::Modifiers aModifierFlags, + nsIObserver* aObserver) override; + virtual nsresult SynthesizeNativeMouseMove(LayoutDeviceIntPoint aPoint, + nsIObserver* aObserver) override { + return SynthesizeNativeMouseEvent( + aPoint, NativeMouseMessage::Move, mozilla::MouseButton::eNotPressed, + nsIWidget::Modifiers::NO_MODIFIERS, aObserver); + }; + + virtual nsresult SynthesizeNativeMouseScrollEvent( + LayoutDeviceIntPoint aPoint, uint32_t aNativeMessage, double aDeltaX, + double aDeltaY, double aDeltaZ, uint32_t aModifierFlags, + uint32_t aAdditionalFlags, nsIObserver* aObserver) override; + + virtual nsresult SynthesizeNativeTouchPoint(uint32_t aPointerId, + TouchPointerState aPointerState, + LayoutDeviceIntPoint aPoint, + double aPointerPressure, + uint32_t aPointerOrientation, + nsIObserver* aObserver) override; + + virtual nsresult SynthesizeNativeTouchPadPinch( + TouchpadGesturePhase aEventPhase, float aScale, + LayoutDeviceIntPoint aPoint, int32_t aModifierFlags) override; + + virtual nsresult SynthesizeNativeTouchpadPan(TouchpadGesturePhase aEventPhase, + LayoutDeviceIntPoint aPoint, + double aDeltaX, double aDeltaY, + int32_t aModifierFlags, + nsIObserver* aObserver) override; + + private: + ~HeadlessWidget(); + bool mEnabled; + bool mVisible; + bool mDestroyed; + bool mAlwaysOnTop; + nsIWidget* mTopLevel; + HeadlessCompositorWidget* mCompositorWidget; + nsSizeMode mSizeMode; + // The size mode before entering fullscreen mode. + nsSizeMode mLastSizeMode; + // The last size mode set while the window was visible. + nsSizeMode mEffectiveSizeMode; + mozilla::ScreenCoord mLastPinchSpan; + InputContext mInputContext; + mozilla::UniquePtr<mozilla::MultiTouchInput> mSynthesizedTouchInput; + // In headless there is no window manager to track window bounds + // across size mode changes, so we must track it to emulate. + LayoutDeviceIntRect mRestoreBounds; + void ApplySizeModeSideEffects(); + // Move while maintaining size mode. + void MoveInternal(int32_t aX, int32_t aY); + // Resize while maintaining size mode. + void ResizeInternal(int32_t aWidth, int32_t aHeight, bool aRepaint); + // Similarly, we must track the active window ourselves in order + // to dispatch (de)activation events properly. + void RaiseWindow(); + // The top level widgets are tracked for window ordering. They are + // stored in order of activation where the last element is always the + // currently active widget. + static StaticAutoPtr<nsTArray<HeadlessWidget*>> sActiveWindows; + // Get the most recently activated widget or null if there are none. + static already_AddRefed<HeadlessWidget> GetActiveWindow(); +}; + +} // namespace widget +} // namespace mozilla + +#endif |