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// Copyright 2018 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_VIZ_COMMON_HIT_TEST_HIT_TEST_REGION_LIST_H_
#define COMPONENTS_VIZ_COMMON_HIT_TEST_HIT_TEST_REGION_LIST_H_
#include <vector>
#include "components/viz/common/surfaces/frame_sink_id.h"
#include "components/viz/common/viz_common_export.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/transform.h"
namespace viz {
struct HitTestRegionFlags {
// Region maps to this surface (me).
enum : uint32_t { kHitTestMine = 0x01 };
// Region ignored for hit testing (transparent backgrounds & hover:none).
enum : uint32_t { kHitTestIgnore = 0x02 };
// Region maps to child surface (OOPIF).
enum : uint32_t { kHitTestChildSurface = 0x04 };
// Irregular boundary - send HitTestRequest to resolve.
enum : uint32_t { kHitTestAsk = 0x08 };
// TODO(varkha): Add other kHitTest* flags as necessary for other event
// sources such as mouse-wheel, stylus or perhaps even mouse-move.
// Hit-testing for mouse events.
enum : uint32_t { kHitTestMouse = 0x10 };
// Hit-testing for touch events.
enum : uint32_t { kHitTestTouch = 0x20 };
};
struct HitTestRegion {
// HitTestRegionFlags to indicate the type of HitTestRegion.
uint32_t flags = 0;
// FrameSinkId of this region.
FrameSinkId frame_sink_id;
// The rect of the region in the coordinate space of the embedder.
gfx::Rect rect;
// The transform of the region. The transform applied to the rect
// defines the space occupied by this region in the coordinate space of
// the embedder.
gfx::Transform transform;
};
struct VIZ_COMMON_EXPORT HitTestRegionList {
HitTestRegionList();
~HitTestRegionList();
HitTestRegionList(HitTestRegionList&&);
HitTestRegionList& operator=(HitTestRegionList&&);
// HitTestRegionFlags indicate how to handle events that match no sub-regions.
// kHitTestMine routes un-matched events to this surface (opaque).
// kHitTestIgnore keeps previous match in the parent (transparent).
uint32_t flags = 0;
// The bounds of the surface.
gfx::Rect bounds;
// The transform applied to all regions in this surface.
gfx::Transform transform;
// The list of sub-regions in front to back order.
std::vector<HitTestRegion> regions;
};
} // namespace viz
#endif // COMPONENTS_VIZ_COMMON_HIT_TEST_HIT_TEST_REGION_LIST_H_
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