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// Copyright 2015 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 COMPONENTS_EXO_SURFACE_DELEGATE_H_
#define COMPONENTS_EXO_SURFACE_DELEGATE_H_
#include "third_party/skia/include/core/SkColor.h"
#include "ui/gfx/geometry/point.h"
namespace exo {
class Surface;
// Frame types that can be used to decorate a surface.
enum class SurfaceFrameType { NONE, NORMAL, SHADOW, AUTOHIDE, OVERLAY };
// Handles events on surfaces in context-specific ways.
class SurfaceDelegate {
public:
// Called when surface was requested to commit all double-buffered state.
virtual void OnSurfaceCommit() = 0;
// Returns true if surface is in synchronized mode. ie. commit of
// double-buffered state should be synchronized with parent surface.
virtual bool IsSurfaceSynchronized() const = 0;
// Returns true if surface should receive input events.
virtual bool IsInputEnabled(Surface* surface) const = 0;
// Called when surface was requested to use a specific frame type.
virtual void OnSetFrame(SurfaceFrameType type) = 0;
// Called when surface was requested to use a specific set of frame colors.
virtual void OnSetFrameColors(SkColor active_color,
SkColor inactive_color) = 0;
// Called when a new "parent" was requested for this surface. |position|
// is the initial position of surface relative to origin of parent.
virtual void OnSetParent(Surface* parent, const gfx::Point& position) = 0;
// Called when surface was requested to set a specific startup ID label.
virtual void OnSetStartupId(const char* startup_id) = 0;
// Called when surface was requested to set a specific application ID label.
virtual void OnSetApplicationId(const char* application_id) = 0;
protected:
virtual ~SurfaceDelegate() {}
};
} // namespace exo
#endif // COMPONENTS_EXO_SURFACE_DELEGATE_H_
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