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Unified Diff: content/browser/renderer_host/input/fling/fling_curve_configuration.h

Issue 41703006: Move fling implementation from renderer to browser: (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: patch Created 7 years, 1 month ago
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Index: content/browser/renderer_host/input/fling/fling_curve_configuration.h
diff --git a/content/browser/renderer_host/input/fling/fling_curve_configuration.h b/content/browser/renderer_host/input/fling/fling_curve_configuration.h
new file mode 100644
index 0000000000000000000000000000000000000000..5e4b9c6e6e03e75c39408f0af088b7d60c0b0942
--- /dev/null
+++ b/content/browser/renderer_host/input/fling/fling_curve_configuration.h
@@ -0,0 +1,52 @@
+// Copyright (c) 2013 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.
+
+#ifndef CONTENT_BROWSER_RENDERER_HOST_INPUT_FLING_FLING_CURVE_CONFIGURATION_H_
+#define CONTENT_BROWSER_RENDERER_HOST_INPUT_FLING_FLING_CURVE_CONFIGURATION_H_
+
+#include <vector>
+
+#include "base/synchronization/lock.h"
+#include "ui/gfx/point.h"
+#include "ui/gfx/point_f.h"
+
+namespace content {
+
+class FlingCurve;
+
+// A class to manage dynamically adjustable parameters controlling the
+// shape of the fling deacceleration function.
+class FlingCurveConfiguration {
+ public:
+ FlingCurveConfiguration();
+ virtual ~FlingCurveConfiguration();
+
+ // Create a touchpad fling curve using the current parameters.
+ FlingCurve* CreateForTouchPad(const gfx::PointF& velocity,
+ const gfx::Point& cumulative_scroll);
+
+ // Create a touchscreen fling curve using the current parameters.
+ FlingCurve* CreateForTouchScreen(const gfx::PointF& velocity,
+ const gfx::Point& cumulative_scroll);
+
+ // Set the curve parameters.
+ void SetCurveParameters(const std::vector<float>& new_touchpad,
+ const std::vector<float>& new_touchscreen);
+
+ private:
+ FlingCurve* CreateCore(const std::vector<float>& coefs,
+ const gfx::PointF& velocity,
+ const gfx::Point& cumulative_scroll);
+
+ // Protect access to touchpad_coefs_ and touchscreen_coefs_.
+ base::Lock lock_;
+ std::vector<float> touchpad_coefs_;
+ std::vector<float> touchscreen_coefs_;
+
+ DISALLOW_COPY_AND_ASSIGN(FlingCurveConfiguration);
+};
+
+} // namespace content
+
+#endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_FLING_FLING_CURVE_CONFIGURATION_H_

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