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merge View and ViewGroup constructor

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Introduce empy JavaWidget to replace confusing usage of GtkBox and GtkDrawingArea.
gtk_widget_set_name() is called with the Java class name
This commit is contained in:
Julian Winkler
2023-12-29 12:16:10 +01:00
parent 0614e6c245
commit 1b03fa6e1a
4 changed files with 50 additions and 69 deletions
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52
src/api-impl-jni/views/android_view_View.c
View File

@@ -87,6 +87,28 @@ static void on_click(GtkGestureClick *gesture, int n_press, double x, double y,
(*env)->ExceptionDescribe(env);
}
#define SOURCE_CLASS_POINTER 0x2
#define MAGIC_SCROLL_FACTOR 32
static gboolean scroll_cb(GtkEventControllerScroll* self, gdouble dx, gdouble dy, jobject this)
{
JNIEnv *env = get_jni_env();
GdkScrollUnit scroll_unit = gtk_event_controller_scroll_get_unit (self);
if (scroll_unit == GDK_SCROLL_UNIT_SURFACE) {
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);
gboolean ret = (*env)->CallBooleanMethod(env, this, handle_cache.view.onGenericMotionEvent, motion_event);
if((*env)->ExceptionCheck(env))
(*env)->ExceptionDescribe(env);
return ret;
}
void _setOnTouchListener(JNIEnv *env, jobject this, GtkWidget *widget, jobject on_touch_listener)
{
JavaVM *jvm;
@@ -258,15 +280,34 @@ JNIEXPORT void JNICALL Java_android_view_View_native_1setVisibility(JNIEnv *env,
gtk_widget_set_opacity(widget, (visibility != android_view_View_INVISIBLE) * alpha);
}
/** JavaWidget:
* Minimal gtk widget class which does nothing.
* Drawing will be overwritten by WrapperWidget.
* If it holds children, they will be layouted by AndroidLayout
*/
struct _JavaWidget {GtkWidget parent_instance;};
G_DECLARE_FINAL_TYPE(JavaWidget, java_widget, JAVA, WIDGET, GtkWidget)
static void java_widget_init(JavaWidget *java_widget) {}
static void java_widget_class_init(JavaWidgetClass *class) {}
G_DEFINE_TYPE(JavaWidget, java_widget, GTK_TYPE_WIDGET)
JNIEXPORT jlong JNICALL Java_android_view_View_native_1constructor(JNIEnv *env, jobject this, jobject context, jobject attrs)
{
GtkWidget *wrapper = g_object_ref(wrapper_widget_new());
// FIXME: we don't really care all that much what this is, since drawing into empty widgets is done by WrapperWidget, but a drawing area is just confusing
GtkWidget *widget = gtk_drawing_area_new();
GtkWidget *widget = g_object_new(java_widget_get_type(), NULL);
wrapper_widget_set_child(WRAPPER_WIDGET(wrapper), widget);
wrapper_widget_set_jobject(WRAPPER_WIDGET(wrapper), env, this);
jclass class = _CLASS(this);
jstring nameObj = (*env)->CallObjectMethod(env, class,
_METHOD(_CLASS(class), "getName", "()Ljava/lang/String;"));
const char *name = (*env)->GetStringUTFChars(env, nameObj, NULL);
gtk_widget_set_name(widget, name);
(*env)->ReleaseStringUTFChars(env, nameObj, name);
/* this should better match default android behavior */
gtk_widget_set_overflow(wrapper, GTK_OVERFLOW_HIDDEN);
jmethodID measure_method = _METHOD(class, "onMeasure", "(II)V");
jmethodID layout_method = _METHOD(class, "onLayout", "(ZIIII)V");
if (measure_method != handle_cache.view.onMeasure || layout_method != handle_cache.view.onLayout) {
@@ -274,6 +315,13 @@ JNIEXPORT jlong JNICALL Java_android_view_View_native_1constructor(JNIEnv *env,
(*env)->SetBooleanField(env, this, _FIELD_ID(class, "haveCustomMeasure", "Z"), true);
}
if (_METHOD(_CLASS(this), "onGenericMotionEvent", "(Landroid/view/MotionEvent;)Z") != handle_cache.view.onGenericMotionEvent) {
GtkEventController *controller = gtk_event_controller_scroll_new(GTK_EVENT_CONTROLLER_SCROLL_VERTICAL);
g_signal_connect(controller, "scroll", G_CALLBACK(scroll_cb), _REF(this));
gtk_widget_add_controller(widget, controller);
}
return _INTPTR(widget);
}