src/content/browser/renderer_host/input/web_input_event_builders_android.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/browser/renderer_host/input/web_input_event_builders_android.h"
   6
   7 #include "base/logging.h"
   8 #include "content/browser/renderer_host/input/motion_event_android.h"
   9 #include "content/browser/renderer_host/input/web_input_event_util.h"
  10 #include "content/browser/renderer_host/input/web_input_event_util_posix.h"
  11 #include "ui/events/keycodes/keyboard_code_conversion_android.h"
  12 #include "ui/events/keycodes/keyboard_codes_posix.h"
  13
  14 using blink::WebInputEvent;
  15 using blink::WebKeyboardEvent;
  16 using blink::WebGestureEvent;
  17 using blink::WebMouseEvent;
  18 using blink::WebMouseWheelEvent;
  19 using blink::WebTouchEvent;
  20 using blink::WebTouchPoint;
  21
  22 namespace content {
  23
  24 WebKeyboardEvent WebKeyboardEventBuilder::Build(WebInputEvent::Type type,
  25                                                 int modifiers,
  26                                                 double time_sec,
  27                                                 int keycode,
  28                                                 int unicode_character,
  29                                                 bool is_system_key) {
  30   DCHECK(WebInputEvent::isKeyboardEventType(type));
  31   WebKeyboardEvent result;
  32
  33   result.type = type;
  34   result.modifiers = modifiers;
  35   result.timeStampSeconds = time_sec;
  36   ui::KeyboardCode windows_key_code =
  37       ui::KeyboardCodeFromAndroidKeyCode(keycode);
  38   UpdateWindowsKeyCodeAndKeyIdentifier(&result, windows_key_code);
  39   result.modifiers |= GetLocationModifiersFromWindowsKeyCode(windows_key_code);
  40   result.nativeKeyCode = keycode;
  41   result.unmodifiedText[0] = unicode_character;
  42   if (result.windowsKeyCode == ui::VKEY_RETURN) {
  43     // This is the same behavior as GTK:
  44     // We need to treat the enter key as a key press of character \r. This
  45     // is apparently just how webkit handles it and what it expects.
  46     result.unmodifiedText[0] = '\r';
  47   }
  48   result.text[0] = result.unmodifiedText[0];
  49   result.isSystemKey = is_system_key;
  50
  51   return result;
  52 }
  53
  54 WebMouseEvent WebMouseEventBuilder::Build(blink::WebInputEvent::Type type,
  55                                           WebMouseEvent::Button button,
  56                                           double time_sec,
  57                                           int window_x,
  58                                           int window_y,
  59                                           int modifiers,
  60                                           int click_count) {
  61   DCHECK(WebInputEvent::isMouseEventType(type));
  62   WebMouseEvent result;
  63
  64   result.type = type;
  65   result.x = window_x;
  66   result.y = window_y;
  67   result.windowX = window_x;
  68   result.windowY = window_y;
  69   result.timeStampSeconds = time_sec;
  70   result.clickCount = click_count;
  71   result.modifiers = modifiers;
  72
  73   if (type == WebInputEvent::MouseDown || type == WebInputEvent::MouseUp)
  74     result.button = button;
  75   else
  76     result.button = WebMouseEvent::ButtonNone;
  77
  78   return result;
  79 }
  80
  81 WebMouseWheelEvent WebMouseWheelEventBuilder::Build(Direction direction,
  82                                                     double time_sec,
  83                                                     int window_x,
  84                                                     int window_y) {
  85   WebMouseWheelEvent result;
  86
  87   result.type = WebInputEvent::MouseWheel;
  88   result.x = window_x;
  89   result.y = window_y;
  90   result.windowX = window_x;
  91   result.windowY = window_y;
  92   result.timeStampSeconds = time_sec;
  93   result.button = WebMouseEvent::ButtonNone;
  94
  95   // The below choices are matched from GTK.
  96   const float scrollbar_pixels_per_tick = 160.0f / 3.0f;
  97
  98   switch (direction) {
  99     case DIRECTION_UP:
 100       result.deltaY = scrollbar_pixels_per_tick;
 101       result.wheelTicksY = 1;
 102       break;
 103     case DIRECTION_DOWN:
 104       result.deltaY = -scrollbar_pixels_per_tick;
 105       result.wheelTicksY = -1;
 106       break;
 107     case DIRECTION_LEFT:
 108       result.deltaX = scrollbar_pixels_per_tick;
 109       result.wheelTicksX = 1;
 110       break;
 111     case DIRECTION_RIGHT:
 112       result.deltaX = -scrollbar_pixels_per_tick;
 113       result.wheelTicksX = -1;
 114       break;
 115   }
 116
 117   return result;
 118 }
 119
 120 WebGestureEvent WebGestureEventBuilder::Build(WebInputEvent::Type type,
 121                                               double time_sec,
 122                                               int x,
 123                                               int y) {
 124   DCHECK(WebInputEvent::isGestureEventType(type));
 125   WebGestureEvent result;
 126
 127   result.type = type;
 128   result.x = x;
 129   result.y = y;
 130   result.timeStampSeconds = time_sec;
 131   result.sourceDevice = WebGestureEvent::Touchscreen;
 132
 133   return result;
 134 }
 135
 136 blink::WebTouchEvent WebTouchEventBuilder::Build(
 137     const MotionEventAndroid& event,
 138     float scale) {
 139   return CreateWebTouchEventFromMotionEvent(event, scale);
 140 }
 141
 142 }  // namespace content