From 98565c6d2ba538ab6aa35c67d06a456732f495a9 Mon Sep 17 00:00:00 2001
From: Pietro Gagliardi <pietro10@mac.com>
Date: Sat, 11 Oct 2014 13:13:40 -0400
Subject: [PATCH] Started the real GTK+ Popover implementation.

---
 popover/popover_unix.c | 99 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 popover/popover_unix.c

diff --git a/popover/popover_unix.c b/popover/popover_unix.c
new file mode 100644
index 0000000..83f58fc
--- /dev/null
+++ b/popover/popover_unix.c
@@ -0,0 +1,99 @@
+// 11 october 2014
+// #qo pkg-config: gtk+-3.0
+#include <gtk/gtk.h>
+
+#define GOPOPOVER_TYPE (goPopover_get_type())
+#define GOPOPOVER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), GOPOPOVER_TYPE, goPopover))
+#define IS_GOPOPOVER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), GOPOPOVER_TYPE))
+#define GOPOPOVER_CLASS(class) (G_TYPE_CHECK_CLASS_CAST((class), GOPOPOVER_TYPE, goPopoverClass))
+#define IS_GOPOPOVER_CLASS(class) (G_TYPE_CHECK_CLASS_TYPE((class), GOPOPOVER_TYPE))
+#define GOPOPOVER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), GOPOPOVER_TYPE, goPopoverClass))
+
+typedef struct goPopover goPopover;
+typedef struct goPopoverClass goPopoverClass;
+
+struct goPopover {
+	GtkBin parent_instance;
+	void *gocontainer;
+	GdkWindow *gdkwin;
+};
+
+struct goPopoverClass {
+	GtkBinClass parent_class;
+};
+
+G_DEFINE_TYPE(goPopover, goPopover, GTK_TYPE_BIN)
+
+static void goPopover_init(goPopover *p)
+{
+	gtk_widget_set_has_window(GTK_WIDGET(p), TRUE);
+}
+
+static void goPopover_dispose(GObject *obj)
+{
+	G_OBJECT_CLASS(goPopover_parent_class)->dispose(obj);
+}
+
+static void goPopover_finalize(GObject *obj)
+{
+	G_OBJECT_CLASS(goPopover_parent_class)->finalize(obj);
+}
+
+static void goPopover_realize(GtkWidget *widget)
+{
+	GdkWindowAttr attr;
+	goPopover *p = GOPOPOVER(widget);
+
+	attr.x = 0;
+	attr.y = 0;
+	attr.width = 0;
+	attr.height = 0;
+	attr.wclass = GDK_INPUT_OUTPUT;
+	attr.event_mask = gtk_widget_get_events(GTK_WIDGET(p)) | GDK_POINTER_MOTION_MASK | GDK_BUTTON_MOTION_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_EXPOSURE_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK;
+	attr.visual = gtk_widget_get_visual(GTK_WIDGET(p));
+	attr.window_type = GDK_WINDOW_CHILD;		// GtkPopover does this; TODO what does GtkWindow(GTK_WINDOW_POPUP) do?
+	p->gdkwin = gdk_window_new(NULL, &attr, GDK_WA_VISUAL);
+	gtk_widget_set_window(GTK_WIDGET(p), p->gdkwin);
+	gtk_widget_register_window(GTK_WIDGET(p), p->gdkwin);
+	gtk_widget_set_realized(GTK_WIDGET(p), TRUE);
+}
+
+static void goPopover_map(GtkWidget *widget)
+{
+	gdk_window_show(GOPOPOVER(widget)->gdkwin);
+}
+
+static void goPopover_unmap(GtkWidget *widget)
+{
+	gdk_window_hide(GOPOPOVER(widget)->gdkwin);
+}
+
+static void goPopover_class_init(goPopoverClass *class)
+{
+	G_OBJECT_CLASS(class)->dispose = goPopover_dispose;
+	G_OBJECT_CLASS(class)->finalize = goPopover_finalize;
+	GTK_WIDGET_CLASS(class)->realize = goPopover_realize;
+	GTK_WIDGET_CLASS(class)->map = goPopover_map;
+	GTK_WIDGET_CLASS(class)->unmap = goPopover_unmap;
+}
+
+void buttonClicked(GtkWidget *button, gpointer data)
+{
+}
+
+int main(void)
+{
+	GtkWidget *mainwin;
+	GtkWidget *button;
+
+	gtk_init(NULL, NULL);
+	mainwin = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+	gtk_window_resize(GTK_WINDOW(mainwin), 150, 50);
+	g_signal_connect(mainwin, "destroy", gtk_main_quit, NULL);
+	button = gtk_button_new_with_label("Click Me");
+	g_signal_connect(button, "clicked", G_CALLBACK(buttonClicked), NULL);
+	gtk_container_add(GTK_CONTAINER(mainwin), button);
+	gtk_widget_show_all(mainwin);
+	gtk_main();
+	return 0;
+}