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implement Touchevent prevent default behavior (#35031)

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* implement Touchevent prevent default behavior

* The status change logic of the `TouchHandler` is changed.
> The `WaitingForScript` state is canceled. TouchAction can be identified
  based on the current touch type and numbers if touch points.
* Sends current event to script thread along with recognized `TouchAction`.
> After dispatch event, script thread sends a `TouchEventProcess(EventResult)`
  message to main thread. If the event is set to `DefaultAllowed`, the
  corresponding `TouchAction` information is added.
* After receiving `DefaultAllowed(TouchAction)` message, main thread executes corresponding action.
> `DefaultPrevented(TouchEventType)` is received. Use `prevent_click` to mark
  that the default `Click` is blocked, and `prevent_move` to mark that the
  default `Scroll` and `Zoom` are blocked. In this way, all TouchActions
  implement preventDefault.
Signed-off-by: Bi Fuguo <1782765876@qq.com>

* fix some suggestions

* support preventDefault fling
* move `TouchAction` to share touch directory
* check preventDefault everytime when touch
* fix zoom ineffective

Signed-off-by: Bi Fuguo <1782765876@qq.com>

* fix some suggestions

rename on_event_processed to  on_touch_event_processed
clear unused features

Signed-off-by: Bi Fuguo <1782765876@qq.com>

* Optimizes pan performance by continuously sliding without waiting for the eventhandler.

Signed-off-by: kongbai1996 <1782765876@qq.com>

* resolve conflict

Signed-off-by: kongbai1996 <1782765876@qq.com>

---------

Signed-off-by: Bi Fuguo <1782765876@qq.com>
Signed-off-by: kongbai1996 <1782765876@qq.com>
This commit is contained in:
Bi Fuguo 2025-02-17 18:50:04 +08:00 • committed by GitHub
parent 6dce329acc
commit 3fe42a0b5a
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12 changed files with 273 additions and 255 deletions
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8
components/shared/script/script_msg.rs
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@ -13,7 +13,9 @@ use base::id::{
use base::Epoch;
use canvas_traits::canvas::{CanvasId, CanvasMsg};
use devtools_traits::{ScriptToDevtoolsControlMsg, WorkerId};
use embedder_traits::{EmbedderMsg, MediaSessionEvent, TraversalDirection};
use embedder_traits::{
EmbedderMsg, MediaSessionEvent, TouchAction, TouchEventType, TraversalDirection,
};
use euclid::default::Size2D as UntypedSize2D;
use euclid::Size2D;
use ipc_channel::ipc::{IpcReceiver, IpcSender};
@ -64,9 +66,9 @@ impl fmt::Debug for LayoutMsg {
#[derive(Debug, Deserialize, Serialize)]
pub enum EventResult {
/// Allowed by web content
DefaultAllowed,
DefaultAllowed(TouchAction),
/// Prevented by web content
DefaultPrevented,
DefaultPrevented(TouchEventType),
}
/// A log entry reported to the constellation