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allocate transparent {WrapperWidget / JavaWidget} 0x0 and draw children in overflow area

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This prevents overlay widgets from blocking touch events.

Androids ViewGroup.dispatchTouchEvent() loops over all children and only breaks if an eventhandler returns true. Gtk on the other hand stops at the first sensitive child. Even if the eventhandler returned false.
This commit is contained in:
Julian Winkler
2024-05-06 06:35:47 +02:00
parent 9fcec8b64c
commit f82af6ecb7
5 changed files with 70 additions and 4 deletions
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31
src/api-impl-jni/views/android_view_View.c
View File

@@ -181,6 +181,10 @@ void _setOnTouchListener(JNIEnv *env, jobject this, GtkWidget *widget, jobject o
gtk_widget_add_controller(widget, controller);
g_object_set_data(G_OBJECT(widget), "on_intercept_touch_listener", controller);
}
WrapperWidget *wrapper = WRAPPER_WIDGET(widget);
if (!wrapper->needs_allocation && (wrapper->layout_width || wrapper->layout_height))
gtk_widget_size_allocate(GTK_WIDGET(wrapper), &(GtkAllocation){.x = 0, .y = 0, .width = wrapper->layout_width, .height = wrapper->layout_height}, 0);
wrapper->needs_allocation = true;
}
JNIEXPORT void JNICALL Java_android_view_View_setOnTouchListener(JNIEnv *env, jobject this, jobject on_touch_listener)
@@ -214,6 +218,7 @@ JNIEXPORT void JNICALL Java_android_view_View_setOnClickListener(JNIEnv *env, jo
g_signal_connect(controller, "released", G_CALLBACK(on_click), callback_data); // the release completes the click, I guess?
gtk_widget_add_controller(widget, controller);
g_object_set_data(G_OBJECT(widget), "on_click_listener", controller);
widget_set_needs_allocation(widget);
}
JNIEXPORT jint JNICALL Java_android_view_View_getWidth(JNIEnv *env, jobject this)
@@ -225,6 +230,10 @@ JNIEXPORT jint JNICALL Java_android_view_View_getWidth(JNIEnv *env, jobject this
gtk_widget_get_allocation(widget, &alloc);
printf("widget size is currently %dx%d\n", alloc.width, alloc.height);
*/
if (ATL_IS_ANDROID_LAYOUT(gtk_widget_get_layout_manager(widget))) {
AndroidLayout *layout = ATL_ANDROID_LAYOUT(gtk_widget_get_layout_manager(widget));
return layout->real_width;
}
return gtk_widget_get_width(widget);
}
@@ -232,6 +241,10 @@ JNIEXPORT jint JNICALL Java_android_view_View_getHeight(JNIEnv *env, jobject thi
{
GtkWidget *widget = GTK_WIDGET(_PTR(_GET_LONG_FIELD(this, "widget")));
if (ATL_IS_ANDROID_LAYOUT(gtk_widget_get_layout_manager(widget))) {
AndroidLayout *layout = ATL_ANDROID_LAYOUT(gtk_widget_get_layout_manager(widget));
return layout->real_height;
}
return gtk_widget_get_height(widget);
}
@@ -358,7 +371,7 @@ JNIEXPORT jlong JNICALL Java_android_view_View_native_1constructor(JNIEnv *env,
(*env)->ReleaseStringUTFChars(env, nameObj, name);
/* this should better match default android behavior */
gtk_widget_set_overflow(wrapper, GTK_OVERFLOW_HIDDEN);
gtk_widget_set_overflow(wrapper, GTK_OVERFLOW_VISIBLE);
jmethodID measure_method = _METHOD(class, "onMeasure", "(II)V");
jmethodID layout_method = _METHOD(class, "onLayout", "(ZIIII)V");
@@ -437,9 +450,20 @@ JNIEXPORT void JNICALL Java_android_view_View_native_1layout(JNIEnv *env, jobjec
GtkAllocation allocation = {
.x=l,
.y=t,
.width=r-l,
.height=b-t,
};
int width = r-l;
int height = b-t;
WrapperWidget *wrapper = WRAPPER_WIDGET(widget);
if (wrapper->real_width != width || wrapper->real_height != height) {
wrapper->real_width = width;
wrapper->real_height = height;
if (!wrapper->needs_allocation)
gtk_widget_queue_allocate(widget);
}
if (wrapper->needs_allocation) {
allocation.width = width;
allocation.height = height;
}
gtk_widget_size_allocate(widget, &allocation, -1);
}
@@ -474,6 +498,7 @@ JNIEXPORT void JNICALL Java_android_view_View_setBackgroundColor(JNIEnv *env, jo
gtk_style_context_add_provider(style_context, GTK_STYLE_PROVIDER(css_provider), GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
g_object_set_data(G_OBJECT(widget), "background_color_style_provider", css_provider);
widget_set_needs_allocation(widget);
}
#pragma GCC diagnostic pop