File: pointer_gesture_pinch_delegate.h

package info (click to toggle)
chromium 120.0.6099.224-1~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 6,112,112 kB
  • sloc: cpp: 32,907,025; ansic: 8,148,123; javascript: 3,679,536; python: 2,031,248; asm: 959,718; java: 804,675; xml: 617,256; sh: 111,417; objc: 100,835; perl: 88,443; cs: 53,032; makefile: 29,579; fortran: 24,137; php: 21,162; tcl: 21,147; sql: 20,809; ruby: 17,735; pascal: 12,864; yacc: 8,045; lisp: 3,388; lex: 1,323; ada: 727; awk: 329; jsp: 267; csh: 117; exp: 43; sed: 37
file content (37 lines) | stat: -rw-r--r-- 1,203 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 
// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_EXO_POINTER_GESTURE_PINCH_DELEGATE_H_
#define COMPONENTS_EXO_POINTER_GESTURE_PINCH_DELEGATE_H_

#include "base/time/time.h"

namespace exo {
class Pointer;

// Handles pinch event details on pointers. Used as an extension to the
// PointerDelegate.
class PointerGesturePinchDelegate {
 public:
  // Called at the top of the pointer's destructor, to give observers a
  // chance to remove themselves.
  virtual void OnPointerDestroying(Pointer* pointer) = 0;

  virtual void OnPointerPinchBegin(uint32_t unique_touch_event_id,
                                   base::TimeTicks time_stamp,
                                   Surface* surface) = 0;

  virtual void OnPointerPinchUpdate(base::TimeTicks time_stamp,
                                    float scale) = 0;

  virtual void OnPointerPinchEnd(uint32_t unique_touch_event_id,
                                 base::TimeTicks time_stamp) = 0;

 protected:
  virtual ~PointerGesturePinchDelegate() {}
};

}  // namespace exo

#endif  // COMPONENTS_EXO_POINTER_GESTURE_PINCH_DELEGATE_H_