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onInterceptTouchEvent: propagate ACTION_CANCEL to child widgets

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This commit is contained in:
Julian Winkler
2024-02-27 18:25:00 +01:00
parent efa61afc71
commit 1a97841579
2 changed files with 25 additions and 5 deletions
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1
src/api-impl-jni/defines.h
View File

@@ -39,6 +39,7 @@
#define MOTION_EVENT_ACTION_DOWN 0
#define MOTION_EVENT_ACTION_UP 1
#define MOTION_EVENT_ACTION_MOVE 2
#define MOTION_EVENT_ACTION_CANCEL 3
#define MOTION_EVENT_ACTION_SCROLL 8

29
src/api-impl-jni/views/android_view_View.c
View File

@@ -13,7 +13,9 @@
struct touch_callback_data { JavaVM *jvm; jobject this; jobject on_touch_listener; jclass on_touch_listener_class; bool intercepted; };
static bool call_ontouch_callback(int action, double x, double y, struct touch_callback_data *d, GtkPropagationPhase phase, guint32 timestamp)
static GdkEvent *canceled_event = NULL;
static bool call_ontouch_callback(int action, double x, double y, struct touch_callback_data *d, GtkPropagationPhase phase, guint32 timestamp, GdkEvent *event)
{
bool ret;
JNIEnv *env;
@@ -23,7 +25,11 @@ static bool call_ontouch_callback(int action, double x, double y, struct touch_c
if (phase == GTK_PHASE_CAPTURE && !d->intercepted) {
d->intercepted = (*env)->CallBooleanMethod(env, d->this, handle_cache.view.onInterceptTouchEvent, motion_event);
ret = d->intercepted;
if (d->intercepted) {
// store the event that was canceled and let it propagate to the child widgets
canceled_event = event;
}
ret = false;
} else if(d->on_touch_listener) /* NULL listener means the callback was registered for onTouchEvent */
ret = (*env)->CallBooleanMethod(env, d->on_touch_listener, _METHOD(d->on_touch_listener_class, "onTouch", "(Landroid/view/View;Landroid/view/MotionEvent;)Z"), d->this, motion_event);
else
@@ -59,23 +65,27 @@ static gboolean on_event(GtkEventControllerLegacy *event_controller, GdkEvent *e
guint32 timestamp = gdk_event_get_time(event);
// TODO: this doesn't work for multitouch
if (event == canceled_event) {
gdk_event_get_widget_relative_position(event, widget, &x, &y);
return call_ontouch_callback(MOTION_EVENT_ACTION_CANCEL, x, y, d, phase, timestamp, event);
}
switch(gdk_event_get_event_type(event)) {
case GDK_BUTTON_PRESS:
case GDK_TOUCH_BEGIN:
gdk_event_get_widget_relative_position(event, widget, &x, &y);
return call_ontouch_callback(MOTION_EVENT_ACTION_DOWN, x, y, d, phase, timestamp);
return call_ontouch_callback(MOTION_EVENT_ACTION_DOWN, x, y, d, phase, timestamp, event);
break;
case GDK_BUTTON_RELEASE:
case GDK_TOUCH_END:
gdk_event_get_widget_relative_position(event, widget, &x, &y);
return call_ontouch_callback(MOTION_EVENT_ACTION_UP, x, y, d, phase, timestamp);
return call_ontouch_callback(MOTION_EVENT_ACTION_UP, x, y, d, phase, timestamp, event);
break;
case GDK_MOTION_NOTIFY:
if (!(gdk_event_get_modifier_state(event) & GDK_BUTTON1_MASK))
break;
case GDK_TOUCH_UPDATE:
gdk_event_get_widget_relative_position(event, widget, &x, &y);
return call_ontouch_callback(MOTION_EVENT_ACTION_MOVE, x, y, d, phase, timestamp);
return call_ontouch_callback(MOTION_EVENT_ACTION_MOVE, x, y, d, phase, timestamp, event);
break;
default:
break;
@@ -478,6 +488,14 @@ static void on_long_click(GtkGestureLongPress *gesture, double x, double y, stru
gtk_gesture_set_state(GTK_GESTURE(gesture), GTK_EVENT_SEQUENCE_CLAIMED);
}
static void on_long_click_update(GtkGesture *gesture, GdkEventSequence* sequence, struct touch_callback_data *d)
{
GdkEvent *event = gtk_gesture_get_last_event(gesture, sequence);
if (event == canceled_event) {
gtk_event_controller_reset(GTK_EVENT_CONTROLLER(gesture));
}
}
JNIEXPORT void JNICALL Java_android_view_View_setOnLongClickListener(JNIEnv *env, jobject this, jobject on_long_click_listener)
{
GtkWidget *widget = GTK_WIDGET(_PTR(_GET_LONG_FIELD(this, "widget")));
@@ -500,6 +518,7 @@ JNIEXPORT void JNICALL Java_android_view_View_setOnLongClickListener(JNIEnv *env
GtkEventController *controller = GTK_EVENT_CONTROLLER(gtk_gesture_long_press_new());
g_signal_connect(controller, "pressed", G_CALLBACK(on_long_click), callback_data);
g_signal_connect(controller, "update", G_CALLBACK(on_long_click_update), callback_data);
gtk_widget_add_controller(widget, controller);
g_object_set_data(G_OBJECT(widget), "on_long_click_listener", controller);
}