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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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18
ports/servoshell/desktop/app_state.rs
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@ -19,7 +19,7 @@ use servo::webrender_api::ScrollLocation;
use servo::{
AllowOrDenyRequest, AuthenticationRequest, FilterPattern, GamepadHapticEffectType, LoadStatus,
PermissionRequest, PromptDefinition, PromptOrigin, PromptResult, Servo, ServoDelegate,
ServoError, TouchEventAction, WebView, WebViewDelegate,
ServoError, TouchEventType, WebView, WebViewDelegate,
};
#[cfg(target_os = "linux")]
use tinyfiledialogs::MessageBoxIcon;
@ -274,36 +274,36 @@ impl RunningAppState {
0.0,
-self.inner().window.page_height() + 2.0 * LINE_HEIGHT,
));
webview.notify_scroll_event(scroll_location, origin, TouchEventAction::Move);
webview.notify_scroll_event(scroll_location, origin, TouchEventType::Move);
})
.shortcut(Modifiers::empty(), Key::PageUp, || {
let scroll_location = ScrollLocation::Delta(Vector2D::new(
0.0,
self.inner().window.page_height() - 2.0 * LINE_HEIGHT,
));
webview.notify_scroll_event(scroll_location, origin, TouchEventAction::Move);
webview.notify_scroll_event(scroll_location, origin, TouchEventType::Move);
})
.shortcut(Modifiers::empty(), Key::Home, || {
webview.notify_scroll_event(ScrollLocation::Start, origin, TouchEventAction::Move);
webview.notify_scroll_event(ScrollLocation::Start, origin, TouchEventType::Move);
})
.shortcut(Modifiers::empty(), Key::End, || {
webview.notify_scroll_event(ScrollLocation::End, origin, TouchEventAction::Move);
webview.notify_scroll_event(ScrollLocation::End, origin, TouchEventType::Move);
})
.shortcut(Modifiers::empty(), Key::ArrowUp, || {
let location = ScrollLocation::Delta(Vector2D::new(0.0, 3.0 * LINE_HEIGHT));
webview.notify_scroll_event(location, origin, TouchEventAction::Move);
webview.notify_scroll_event(location, origin, TouchEventType::Move);
})
.shortcut(Modifiers::empty(), Key::ArrowDown, || {
let location = ScrollLocation::Delta(Vector2D::new(0.0, -3.0 * LINE_HEIGHT));
webview.notify_scroll_event(location, origin, TouchEventAction::Move);
webview.notify_scroll_event(location, origin, TouchEventType::Move);
})
.shortcut(Modifiers::empty(), Key::ArrowLeft, || {
let location = ScrollLocation::Delta(Vector2D::new(LINE_HEIGHT, 0.0));
webview.notify_scroll_event(location, origin, TouchEventAction::Move);
webview.notify_scroll_event(location, origin, TouchEventType::Move);
})
.shortcut(Modifiers::empty(), Key::ArrowRight, || {
let location = ScrollLocation::Delta(Vector2D::new(-LINE_HEIGHT, 0.0));
webview.notify_scroll_event(location, origin, TouchEventAction::Move);
webview.notify_scroll_event(location, origin, TouchEventType::Move);
});
}
}