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copy android.widget.Scroller from AOSP and implement missing scroll APIs

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This is needed to make ViewPager functional
This commit is contained in:
Julian Winkler
2023-09-01 12:13:24 +02:00
parent eac22aaa64
commit fb1a07967e
8 changed files with 614 additions and 17 deletions
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3
src/api-impl-jni/util.c
View File

@@ -116,6 +116,9 @@ void set_up_handle_cache(JNIEnv *env)
handle_cache.view.getSuggestedMinimumHeight = _METHOD(handle_cache.view.class, "getSuggestedMinimumHeight", "()I");
handle_cache.view.setMeasuredDimension = _METHOD(handle_cache.view.class, "setMeasuredDimension", "(II)V");
handle_cache.view.onGenericMotionEvent = _METHOD(handle_cache.view.class, "onGenericMotionEvent", "(Landroid/view/MotionEvent;)Z");
handle_cache.view.computeScroll = _METHOD(handle_cache.view.class, "computeScroll", "()V");
handle_cache.view.getScrollX = _METHOD(handle_cache.view.class, "getScrollX", "()I");
handle_cache.view.getScrollY = _METHOD(handle_cache.view.class, "getScrollY", "()I");
handle_cache.asset_manager.class = _REF((*env)->FindClass(env, "android/content/res/AssetManager"));
handle_cache.asset_manager.extractFromAPK = _STATIC_METHOD(handle_cache.asset_manager.class, "extractFromAPK", "(Ljava/lang/String;Ljava/lang/String;)V");

3
src/api-impl-jni/util.h
View File

@@ -77,6 +77,9 @@ struct handle_cache {
jmethodID getSuggestedMinimumHeight;
jmethodID setMeasuredDimension;
jmethodID onGenericMotionEvent;
jmethodID computeScroll;
jmethodID getScrollX;
jmethodID getScrollY;
} view;
struct {
jclass class;

8
src/api-impl-jni/views/android_view_ViewGroup.c
View File

@@ -45,7 +45,13 @@ static void android_layout_allocate(GtkLayoutManager *layout_manager, GtkWidget
if((*env)->ExceptionCheck(env))
(*env)->ExceptionDescribe(env);
(*env)->CallVoidMethod(env, layout->view, handle_cache.view.onLayout, TRUE, 0, 0, width, height);
(*env)->CallVoidMethod(env, layout->view, handle_cache.view.computeScroll);
if((*env)->ExceptionCheck(env))
(*env)->ExceptionDescribe(env);
int scroll_x = (*env)->CallIntMethod(env, layout->view, handle_cache.view.getScrollX);
int scroll_y = (*env)->CallIntMethod(env, layout->view, handle_cache.view.getScrollY);
(*env)->CallVoidMethod(env, layout->view, handle_cache.view.onLayout, TRUE, scroll_x, scroll_y, width, height);
if((*env)->ExceptionCheck(env))
(*env)->ExceptionDescribe(env);
}