Index: content/browser/gamepad/gamepad_standard_mappings.cc |
diff --git a/content/browser/gamepad/gamepad_standard_mappings.cc b/content/browser/gamepad/gamepad_standard_mappings.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..78c0ad87ed44e0825c59278a503db2169e4a54b4 |
--- /dev/null |
+++ b/content/browser/gamepad/gamepad_standard_mappings.cc |
@@ -0,0 +1,54 @@ |
+// Copyright (c) 2014 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "content/browser/gamepad/gamepad_standard_mappings.h" |
+ |
+namespace content { |
+ |
+blink::WebGamepadButton AxisToButton(float input) { |
+ float value = (input + 1.f) / 2.f; |
+ return blink::WebGamepadButton( |
+ value > kDefaultButtonPressedThreshold, value); |
+} |
+ |
+blink::WebGamepadButton AxisNegativeAsButton(float input) { |
+ float value = (input < -0.5f) ? 1.f : 0.f; |
+ return blink::WebGamepadButton( |
+ value > kDefaultButtonPressedThreshold, value); |
+} |
+ |
+blink::WebGamepadButton AxisPositiveAsButton(float input) { |
+ float value = (input > 0.5f) ? 1.f : 0.f; |
+ return blink::WebGamepadButton( |
+ value > kDefaultButtonPressedThreshold, value); |
+} |
+ |
+void DpadFromAxis(blink::WebGamepad* mapped, float dir) { |
+ bool up = false; |
+ bool right = false; |
+ bool down = false; |
+ bool left = false; |
+ |
+ // Dpad is mapped as a direction on one axis, where -1 is up and it |
+ // increases clockwise to 1, which is up + left. It's set to a large (> 1.f) |
+ // number when nothing is depressed, except on start up, sometimes it's 0.0 |
+ // for no data, rather than the large number. |
+ if (dir != 0.0f) { |
+ up = (dir >= -1.f && dir < -0.7f) || (dir >= .95f && dir <= 1.f); |
+ right = dir >= -.75f && dir < -.1f; |
+ down = dir >= -.2f && dir < .45f; |
+ left = dir >= .4f && dir <= 1.f; |
+ } |
+ |
+ mapped->buttons[kButtonDpadUp].pressed = up; |
+ mapped->buttons[kButtonDpadUp].value = up ? 1.f : 0.f; |
+ mapped->buttons[kButtonDpadRight].pressed = right; |
+ mapped->buttons[kButtonDpadRight].value = right ? 1.f : 0.f; |
+ mapped->buttons[kButtonDpadDown].pressed = down; |
+ mapped->buttons[kButtonDpadDown].value = down ? 1.f : 0.f; |
+ mapped->buttons[kButtonDpadLeft].pressed = left; |
+ mapped->buttons[kButtonDpadLeft].value = left ? 1.f : 0.f; |
+} |
+ |
+} // namespace content |