content/public/android/java/src/org/chromium/content/browser/input/GamepadMappings.java - Issue 284413005: Revert of Gamepad API support for chrome on android

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Issue 284413005: Revert of Gamepad API support for chrome on android (Closed) Base URL: http://git.chromium.org/chromium/src.git@master

Patch Set: Created 6 years, 7 months ago

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1 // Copyright 2014 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 package org.chromium.content.browser.input;

6

7 import android.view.KeyEvent;

8

9 /**

10 * Class to manage mapping information related to each supported gamepad control ler device.

11 */

12 class GamepadMappings {

13 public static boolean mapToStandardGamepad(float[] mappedAxis, float[] mappe dButtons,

14 float[] rawAxes, float[] rawButtons, String deviceName) {

15 if (deviceName.contains("NVIDIA Corporation NVIDIA Controller")) {

16 mapShieldGamepad(mappedButtons, rawButtons, mappedAxis, rawAxes);

17 return true;

18 } else if (deviceName.contains("Microsoft X-Box 360 pad")) {

19 mapXBox360Gamepad(mappedButtons, rawButtons, mappedAxis, rawAxes);

20 return true;

21 }

22

23 mapUnknownGamepad(mappedButtons, rawButtons, mappedAxis, rawAxes);

24 return false;

25 }

26

27 private static void mapCommonButtons(float[] mappedButtons, float[] rawButto ns) {

28 mappedButtons[CanonicalButtonIndex.BUTTON_PRIMARY] = rawButtons[KeyEvent .KEYCODE_BUTTON_A];

29 mappedButtons[CanonicalButtonIndex.BUTTON_SECONDARY] =

30 rawButtons[KeyEvent.KEYCODE_BUTTON_B];

31 mappedButtons[CanonicalButtonIndex.BUTTON_TERTIARY] =

32 rawButtons[KeyEvent.KEYCODE_BUTTON_X];

33 mappedButtons[CanonicalButtonIndex.BUTTON_QUATERNARY] =

34 rawButtons[KeyEvent.KEYCODE_BUTTON_Y];

35 mappedButtons[CanonicalButtonIndex.BUTTON_LEFT_SHOULDER] =

36 rawButtons[KeyEvent.KEYCODE_BUTTON_L1];

37 mappedButtons[CanonicalButtonIndex.BUTTON_RIGHT_SHOULDER] =

38 rawButtons[KeyEvent.KEYCODE_BUTTON_R1];

39 mappedButtons[CanonicalButtonIndex.BUTTON_BACK_SELECT] =

40 rawButtons[KeyEvent.KEYCODE_BUTTON_SELECT];

41 mappedButtons[CanonicalButtonIndex.BUTTON_START] =

42 rawButtons[KeyEvent.KEYCODE_BUTTON_START];

43 mappedButtons[CanonicalButtonIndex.BUTTON_LEFT_THUMBSTICK] =

44 rawButtons[KeyEvent.KEYCODE_BUTTON_THUMBL];

45 mappedButtons[CanonicalButtonIndex.BUTTON_RIGHT_THUMBSTICK] =

46 rawButtons[KeyEvent.KEYCODE_BUTTON_THUMBR];

47 mappedButtons[CanonicalButtonIndex.BUTTON_META] = rawButtons[KeyEvent.KE YCODE_BUTTON_MODE];

48 }

49

50 private static void mapDpadButtonsToAxes(float[] mappedButtons, float[] rawA xes) {

51 // Negative value indicates dpad up.

52 mappedButtons[CanonicalButtonIndex.BUTTON_DPAD_UP] = negativeAxisValueAs Button(rawAxes[9]);

53 // Positive axis value indicates dpad down.

54 mappedButtons[CanonicalButtonIndex.BUTTON_DPAD_DOWN] =

55 positiveAxisValueAsButton(rawAxes[9]);

56 // Positive axis value indicates dpad right.

57 mappedButtons[CanonicalButtonIndex.BUTTON_DPAD_RIGHT] =

58 positiveAxisValueAsButton(rawAxes[8]);

59 // Negative value indicates dpad left.

60 mappedButtons[CanonicalButtonIndex.BUTTON_DPAD_LEFT] =

61 negativeAxisValueAsButton(rawAxes[8]);

62 }

63

64 private static void mapAxes(float[] mappedAxis, float[] rawAxes) {

65 // Standard gamepad can have only four axes.

66 mappedAxis[CanonicalAxisIndex.AXIS_LEFT_STICK_X] = rawAxes[0];

67 mappedAxis[CanonicalAxisIndex.AXIS_LEFT_STICK_Y] = rawAxes[1];

68 mappedAxis[CanonicalAxisIndex.AXIS_RIGHT_STICK_X] = rawAxes[4];

69 mappedAxis[CanonicalAxisIndex.AXIS_RIGHT_STICK_Y] = rawAxes[5];

70 }

71

72 private static float negativeAxisValueAsButton(float input) {

73 return (input < -0.5f) ? 1.f : 0.f;

74 }

75

76 private static float positiveAxisValueAsButton(float input) {

77 return (input > 0.5f) ? 1.f : 0.f;

78 }

79

80 /**

81 * Method for mapping Nvidia gamepad axis and button values

82 * to standard gamepad button and axes values.

83 */

84 private static void mapShieldGamepad(float[] mappedButtons, float[] rawButto ns,

85 float[] mappedAxis, float[] rawAxes) {

86 mapCommonButtons(mappedButtons, rawButtons);

87

88 mappedButtons[CanonicalButtonIndex.BUTTON_LEFT_TRIGGER] = rawAxes[2];

89 mappedButtons[CanonicalButtonIndex.BUTTON_RIGHT_TRIGGER] = rawAxes[6];

90

91 mapDpadButtonsToAxes(mappedButtons, rawAxes);

92 mapAxes(mappedAxis, rawAxes);

93 }

94

95 /**

96 * Method for mapping Microsoft XBox 360 gamepad axis and button values

97 * to standard gamepad button and axes values.

98 */

99 private static void mapXBox360Gamepad(float[] mappedButtons, float[] rawButt ons,

100 float[] mappedAxis, float[] rawAxes) {

101 mapCommonButtons(mappedButtons, rawButtons);

102

103 mappedButtons[CanonicalButtonIndex.BUTTON_LEFT_TRIGGER] = rawAxes[2];

104 mappedButtons[CanonicalButtonIndex.BUTTON_RIGHT_TRIGGER] = rawAxes[6];

105

106 mapDpadButtonsToAxes(mappedButtons, rawAxes);

107 mapAxes(mappedAxis, rawAxes);

108 }

109

110 /**

111 * Method for mapping Unkown gamepad axis and button values

112 * to standard gamepad button and axes values.

113 */

114 private static void mapUnknownGamepad(float[] mappedButtons, float[] rawButt ons,

115 float[] mappedAxis, float[] rawAxes) {

116 mapCommonButtons(mappedButtons, rawButtons);

117

118 mappedButtons[CanonicalButtonIndex.BUTTON_LEFT_TRIGGER] =

119 rawButtons[KeyEvent.KEYCODE_BUTTON_L2];

120 mappedButtons[CanonicalButtonIndex.BUTTON_RIGHT_TRIGGER] =

121 rawButtons[KeyEvent.KEYCODE_BUTTON_R2];

122

123 mappedButtons[CanonicalButtonIndex.BUTTON_DPAD_UP] = rawButtons[KeyEvent .KEYCODE_DPAD_UP];

124 mappedButtons[CanonicalButtonIndex.BUTTON_DPAD_DOWN] =

125 rawButtons[KeyEvent.KEYCODE_DPAD_DOWN];

126 mappedButtons[CanonicalButtonIndex.BUTTON_DPAD_RIGHT] =

127 rawButtons[KeyEvent.KEYCODE_DPAD_RIGHT];

128 mappedButtons[CanonicalButtonIndex.BUTTON_DPAD_LEFT] =

129 rawButtons[KeyEvent.KEYCODE_DPAD_LEFT];

130

131 mapAxes(mappedAxis, rawAxes);

132 }

133

134 }

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