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107 lines
3.2 KiB
C
107 lines
3.2 KiB
C
#include <gtk/gtk.h>
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#include "../defines.h"
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#include "../util.h"
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#include "WrapperWidget.h"
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#include "marshal.h"
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#include "../generated_headers/android_view_SurfaceView.h"
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// TODO: currently this widget class doesn't do anything special, will we ever need it to?
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G_DECLARE_FINAL_TYPE (SurfaceViewWidget, surface_view_widget, SURFACE_VIEW, WIDGET, GtkWidget)
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struct _SurfaceViewWidget
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{
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GtkWidget parent_instance;
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};
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struct _SurfaceViewWidgetClass
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{
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GtkWidgetClass parent_class;
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};
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G_DEFINE_TYPE(SurfaceViewWidget, surface_view_widget, GTK_TYPE_WIDGET)
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static void surface_view_widget_init (SurfaceViewWidget *wrapper_widget)
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{
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}
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// resize signal copied from GtkDrawingArea
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enum {
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RESIZE,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL] = { 0, };
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static void surface_view_widget_size_allocate(GtkWidget *widget, int width, int height, int baseline)
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{
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g_signal_emit(widget, signals[RESIZE], 0, width, height);
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}
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static void surface_view_widget_class_init(SurfaceViewWidgetClass *class)
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{
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
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// resize signal copied from GtkDrawingArea
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widget_class->size_allocate = surface_view_widget_size_allocate;
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signals[RESIZE] =
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g_signal_new("resize",
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G_TYPE_FROM_CLASS (class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GtkDrawingAreaClass, resize),
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NULL, NULL,
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g_cclosure_user_marshal_VOID__INT_INT,
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G_TYPE_NONE, 2, G_TYPE_INT, G_TYPE_INT);
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g_signal_set_va_marshaller(signals[RESIZE],
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G_TYPE_FROM_CLASS (class),
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g_cclosure_user_marshal_VOID__INT_INTv);
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}
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GtkWidget * surface_view_widget_new(void)
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{
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return g_object_new (surface_view_widget_get_type(), NULL);
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}
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// ---
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struct jni_callback_data { JavaVM *jvm; jobject this; jclass this_class;};
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static void on_resize(GtkWidget* self, gint width, gint height, struct jni_callback_data *d)
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{
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JNIEnv *env;
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(*d->jvm)->GetEnv(d->jvm, (void**)&env, JNI_VERSION_1_6);
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// TODO: are there cases where returning RGBA_8888 is a bad idea?
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(*env)->CallVoidMethod(env, d->this, _METHOD(d->this_class, "surfaceChanged", "(Landroid/view/SurfaceHolder;III)V"),
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_GET_OBJ_FIELD(d->this, "mSurfaceHolder", "Landroid/view/SurfaceHolder;"), 1 /*RGBA_8888*/,
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width, height);
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}
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JNIEXPORT void JNICALL Java_android_view_SurfaceView_native_1constructor(JNIEnv *env, jobject this, jobject context)
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{
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GtkWidget *wrapper = wrapper_widget_new();
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GtkWidget *dummy = surface_view_widget_new();
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gtk_widget_set_name(dummy, "dummy widget for SurfaceView");
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wrapper_widget_set_child(WRAPPER_WIDGET(wrapper), dummy);
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// TODO: is this correct for all usecases? how do we know when it's not?
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gtk_widget_set_hexpand(wrapper, true);
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gtk_widget_set_vexpand(wrapper, true);
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JavaVM *jvm;
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(*env)->GetJavaVM(env, &jvm);
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struct jni_callback_data *callback_data = malloc(sizeof(struct jni_callback_data));
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callback_data->jvm = jvm;
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callback_data->this = _REF(this);
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callback_data->this_class = _REF(_CLASS(this));
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g_signal_connect(dummy, "resize", G_CALLBACK(on_resize), callback_data);
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_SET_LONG_FIELD(this, "widget", _INTPTR(dummy));
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}
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