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implement MotionView.eventTime and VelocityTracker

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This is needed to make androidx ViewPager work with touch input
This commit is contained in:
Julian Winkler
2024-02-25 17:41:26 +01:00
parent 8dafa41ea9
commit bcf252d3a6
6 changed files with 52 additions and 19 deletions
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2
src/api-impl-jni/util.c
View File

@@ -83,7 +83,7 @@ void set_up_handle_cache(JNIEnv *env)
handle_cache.paint.getColor = _METHOD(handle_cache.paint.class, "getColor", "()I");
handle_cache.motion_event.class = _REF((*env)->FindClass(env, "android/view/MotionEvent"));
handle_cache.motion_event.constructor = _METHOD(handle_cache.motion_event.class, "<init>", "(IIFF)V");
handle_cache.motion_event.constructor = _METHOD(handle_cache.motion_event.class, "<init>", "(IIFFJ)V");
handle_cache.canvas.class = _REF((*env)->FindClass(env, "android/graphics/Canvas"));
handle_cache.canvas.constructor = _METHOD(handle_cache.canvas.class, "<init>", "(JJ)V");

13
src/api-impl-jni/views/android_view_View.c
View File

@@ -13,13 +13,13 @@
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)
static bool call_ontouch_callback(int action, double x, double y, struct touch_callback_data *d, GtkPropagationPhase phase, guint32 timestamp)
{
bool ret;
JNIEnv *env;
(*d->jvm)->GetEnv(d->jvm, (void**)&env, JNI_VERSION_1_6);
jobject motion_event = (*env)->NewObject(env, handle_cache.motion_event.class, handle_cache.motion_event.constructor, SOURCE_TOUCHSCREEN, action, (float)x, (float)y);
jobject motion_event = (*env)->NewObject(env, handle_cache.motion_event.class, handle_cache.motion_event.constructor, SOURCE_TOUCHSCREEN, action, (float)x, (float)y, (long)timestamp);
if (phase == GTK_PHASE_CAPTURE && !d->intercepted) {
d->intercepted = (*env)->CallBooleanMethod(env, d->this, handle_cache.view.onInterceptTouchEvent, motion_event);
@@ -56,25 +56,26 @@ static gboolean on_event(GtkEventControllerLegacy *event_controller, GdkEvent *e
GtkWidget *widget = gtk_event_controller_get_widget(GTK_EVENT_CONTROLLER(event_controller));
GtkPropagationPhase phase = gtk_event_controller_get_propagation_phase(GTK_EVENT_CONTROLLER(event_controller));
guint32 timestamp = gdk_event_get_time(event);
// TODO: this doesn't work for multitouch
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);
return call_ontouch_callback(MOTION_EVENT_ACTION_DOWN, x, y, d, phase, timestamp);
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);
return call_ontouch_callback(MOTION_EVENT_ACTION_UP, x, y, d, phase, timestamp);
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);
return call_ontouch_callback(MOTION_EVENT_ACTION_MOVE, x, y, d, phase, timestamp);
break;
default:
break;
@@ -107,7 +108,7 @@ static gboolean scroll_cb(GtkEventControllerScroll* self, gdouble dx, gdouble dy
dx /= MAGIC_SCROLL_FACTOR;
dy /= MAGIC_SCROLL_FACTOR;
}
jobject motion_event = (*env)->NewObject(env, handle_cache.motion_event.class, handle_cache.motion_event.constructor, SOURCE_CLASS_POINTER, MOTION_EVENT_ACTION_SCROLL, dx, -dy);
jobject motion_event = (*env)->NewObject(env, handle_cache.motion_event.class, handle_cache.motion_event.constructor, SOURCE_CLASS_POINTER, MOTION_EVENT_ACTION_SCROLL, dx, -dy, (long)0);
gboolean ret = (*env)->CallBooleanMethod(env, this, handle_cache.view.onGenericMotionEvent, motion_event);
if((*env)->ExceptionCheck(env))