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| 1 // Copyright 2017 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 module viz.mojom; |
| 6 |
| 7 import "cc/ipc/surface_id.mojom"; |
| 8 import "ui/gfx/geometry/mojo/geometry.mojom"; |
| 9 import "ui/gfx/mojo/transform.mojom"; |
| 10 |
| 11 // Region maps to this surface (me). |
| 12 const uint32 kHitTestMine = 0x01; |
| 13 |
| 14 // Region ignored for hit testing (transparent backgrounds & hover:none). |
| 15 const uint32 kHitTestIgnore = 0x02; |
| 16 |
| 17 // Region maps to child surface (OOPIF). |
| 18 const uint32 kHitTestChildSurface = 0x04; |
| 19 |
| 20 // Irregular boundary - send HitTestRequest to resolve. |
| 21 const uint32 kHitTestAsk = 0x08; |
| 22 |
| 23 // Touch event handler exists. |
| 24 const uint32 kHitTestTouchEventHandler = 0x10; |
| 25 |
| 26 struct HitTestRegion { |
| 27 // Flags to indicate the type of HitTestRegion. |
| 28 uint32 flags; |
| 29 |
| 30 // SurfaceId is required when flags = kHitTestChildSurface. |
| 31 cc.mojom.SurfaceId surface_id; |
| 32 |
| 33 // The rect of the region in the coordinate space of the embedder. |
| 34 gfx.mojom.Rect rect; |
| 35 |
| 36 // The transform of the region. The transform applied to the rect |
| 37 // defines the space occupied by this region in the coordinate space of |
| 38 // the embedder. |
| 39 gfx.mojom.Transform transform; |
| 40 }; |
| 41 |
| 42 struct HitTestRegionList { |
| 43 // SurfaceId corresponding to this HitTestData. |
| 44 cc.mojom.SurfaceId surface_id; |
| 45 |
| 46 // Flags indicate how to handle events that match no sub-regions. |
| 47 // kHitTestMine routes un-matched events to this surface (opaque). |
| 48 // kHitTestIgnore keeps previous match in the parent (transparent). |
| 49 uint32 flags; |
| 50 |
| 51 // The bounds of the surface. |
| 52 gfx.mojom.Rect bounds; |
| 53 |
| 54 // The transform applied to all regions in this surface. |
| 55 gfx.mojom.Transform transform; |
| 56 |
| 57 // The list of sub-regions in front to back order. |
| 58 array<HitTestRegion> regions; |
| 59 }; |
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