The Tor Browser: comparison widget/gonk/libui/PointerController.h

--1:000000000000
+:b70d3900d526
+/*
+* Copyright (C) 2010 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+#ifndef _UI_POINTER_CONTROLLER_H
+#define _UI_POINTER_CONTROLLER_H
+#include "SpriteController.h"
+#include <ui/DisplayInfo.h>
+#include "Input.h"
+#include <utils/BitSet.h>
+#include <utils/RefBase.h>
+#include <utils/Looper.h>
+#include <utils/String8.h>
+#include <SkBitmap.h>
+namespace android {
+/**
+* Interface for tracking a mouse / touch pad pointer and touch pad spots.
+*
+* The spots are sprites on screen that visually represent the positions of
+* fingers
+*
+* The pointer controller is responsible for providing synchronization and for tracking
+* display orientation changes if needed.
+*/
+class PointerControllerInterface : public virtual RefBase {
+protected:
+PointerControllerInterface() { }
+virtual ~PointerControllerInterface() { }
+public:
+/* Gets the bounds of the region that the pointer can traverse.
+* Returns true if the bounds are available. */
+virtual bool getBounds(float* outMinX, float* outMinY,
+float* outMaxX, float* outMaxY) const = 0;
+/* Move the pointer. */
+virtual void move(float deltaX, float deltaY) = 0;
+/* Sets a mask that indicates which buttons are pressed. */
+virtual void setButtonState(int32_t buttonState) = 0;
+/* Gets a mask that indicates which buttons are pressed. */
+virtual int32_t getButtonState() const = 0;
+/* Sets the absolute location of the pointer. */
+virtual void setPosition(float x, float y) = 0;
+/* Gets the absolute location of the pointer. */
+virtual void getPosition(float* outX, float* outY) const = 0;
+enum Transition {
+// Fade/unfade immediately.
+TRANSITION_IMMEDIATE,
+// Fade/unfade gradually.
+TRANSITION_GRADUAL,
+};
+/* Fades the pointer out now. */
+virtual void fade(Transition transition) = 0;
+/* Makes the pointer visible if it has faded out.
+* The pointer never unfades itself automatically.  This method must be called
+* by the client whenever the pointer is moved or a button is pressed and it
+* wants to ensure that the pointer becomes visible again. */
+virtual void unfade(Transition transition) = 0;
+enum Presentation {
+// Show the mouse pointer.
+PRESENTATION_POINTER,
+// Show spots and a spot anchor in place of the mouse pointer.
+PRESENTATION_SPOT,
+};
+/* Sets the mode of the pointer controller. */
+virtual void setPresentation(Presentation presentation) = 0;
+/* Sets the spots for the current gesture.
+* The spots are not subject to the inactivity timeout like the pointer
+* itself it since they are expected to remain visible for so long as
+* the fingers are on the touch pad.
+*
+* The values of the AMOTION_EVENT_AXIS_PRESSURE axis is significant.
+* For spotCoords, pressure != 0 indicates that the spot's location is being
+* pressed (not hovering).
+*/
+virtual void setSpots(const PointerCoords* spotCoords, const uint32_t* spotIdToIndex,
+BitSet32 spotIdBits) = 0;
+/* Removes all spots. */
+virtual void clearSpots() = 0;
+};
+/*
+* Pointer resources.
+*/
+struct PointerResources {
+SpriteIcon spotHover;
+SpriteIcon spotTouch;
+SpriteIcon spotAnchor;
+};
+/*
+* Pointer controller policy interface.
+*
+* The pointer controller policy is used by the pointer controller to interact with
+* the Window Manager and other system components.
+*
+* The actual implementation is partially supported by callbacks into the DVM
+* via JNI.  This interface is also mocked in the unit tests.
+*/
+class PointerControllerPolicyInterface : public virtual RefBase {
+protected:
+PointerControllerPolicyInterface() { }
+virtual ~PointerControllerPolicyInterface() { }
+public:
+virtual void loadPointerResources(PointerResources* outResources) = 0;
+};
+/*
+* Tracks pointer movements and draws the pointer sprite to a surface.
+*
+* Handles pointer acceleration and animation.
+*/
+class PointerController : public PointerControllerInterface, public MessageHandler {
+protected:
+virtual ~PointerController();
+public:
+enum InactivityTimeout {
+INACTIVITY_TIMEOUT_NORMAL = 0,
+INACTIVITY_TIMEOUT_SHORT = 1,
+};
+PointerController(const sp<PointerControllerPolicyInterface>& policy,
+const sp<Looper>& looper, const sp<SpriteController>& spriteController);
+virtual bool getBounds(float* outMinX, float* outMinY,
+float* outMaxX, float* outMaxY) const;
+virtual void move(float deltaX, float deltaY);
+virtual void setButtonState(int32_t buttonState);
+virtual int32_t getButtonState() const;
+virtual void setPosition(float x, float y);
+virtual void getPosition(float* outX, float* outY) const;
+virtual void fade(Transition transition);
+virtual void unfade(Transition transition);
+virtual void setPresentation(Presentation presentation);
+virtual void setSpots(const PointerCoords* spotCoords,
+const uint32_t* spotIdToIndex, BitSet32 spotIdBits);
+virtual void clearSpots();
+void setDisplayViewport(int32_t width, int32_t height, int32_t orientation);
+void setPointerIcon(const SpriteIcon& icon);
+void setInactivityTimeout(InactivityTimeout inactivityTimeout);
+private:
+static const size_t MAX_RECYCLED_SPRITES = 12;
+static const size_t MAX_SPOTS = 12;
+enum {
+MSG_ANIMATE,
+MSG_INACTIVITY_TIMEOUT,
+};
+struct Spot {
+static const uint32_t INVALID_ID = 0xffffffff;
+uint32_t id;
+sp<Sprite> sprite;
+float alpha;
+float scale;
+float x, y;
+inline Spot(uint32_t id, const sp<Sprite>& sprite)
+: id(id), sprite(sprite), alpha(1.0f), scale(1.0f),
+x(0.0f), y(0.0f), lastIcon(NULL) { }
+void updateSprite(const SpriteIcon* icon, float x, float y);
+private:
+const SpriteIcon* lastIcon;
+};
+mutable Mutex mLock;
+sp<PointerControllerPolicyInterface> mPolicy;
+sp<Looper> mLooper;
+sp<SpriteController> mSpriteController;
+sp<WeakMessageHandler> mHandler;
+PointerResources mResources;
+struct Locked {
+bool animationPending;
+nsecs_t animationTime;
+int32_t displayWidth;
+int32_t displayHeight;
+int32_t displayOrientation;
+InactivityTimeout inactivityTimeout;
+Presentation presentation;
+bool presentationChanged;
+int32_t pointerFadeDirection;
+float pointerX;
+float pointerY;
+float pointerAlpha;
+sp<Sprite> pointerSprite;
+SpriteIcon pointerIcon;
+bool pointerIconChanged;
+int32_t buttonState;
+Vector<Spot*> spots;
+Vector<sp<Sprite> > recycledSprites;
+} mLocked;
+bool getBoundsLocked(float* outMinX, float* outMinY, float* outMaxX, float* outMaxY) const;
+void setPositionLocked(float x, float y);
+void handleMessage(const Message& message);
+void doAnimate();
+void doInactivityTimeout();
+void startAnimationLocked();
+void resetInactivityTimeoutLocked();
+void removeInactivityTimeoutLocked();
+void updatePointerLocked();
+Spot* getSpotLocked(uint32_t id);
+Spot* createAndAddSpotLocked(uint32_t id);
+Spot* removeFirstFadingSpotLocked();
+void releaseSpotLocked(Spot* spot);
+void fadeOutAndReleaseSpotLocked(Spot* spot);
+void fadeOutAndReleaseAllSpotsLocked();
+void loadResources();
+};
+} // namespace android
+#endif // _UI_POINTER_CONTROLLER_H

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comparison: widget/gonk/libui/PointerController.h

widget/gonk/libui/PointerController.h