From 53e527acc7fbd547a3d3b95e73922e4cd560db59 Mon Sep 17 00:00:00 2001
From: gfgtdf <f492343@rmqkr.net>
Date: Wed, 30 Mar 2016 15:26:48 +0200
Subject: [PATCH] show current stage in loadingscren.

---
 data/gui/window/loadscreen.cfg |  2 ++
 src/gui/dialogs/loadscreen.cpp | 32 ++++++++++++++++++++++++++++----
 src/gui/dialogs/loadscreen.hpp | 28 ++++++++++------------------
 3 files changed, 40 insertions(+), 22 deletions(-)

diff --git a/data/gui/window/loadscreen.cfg b/data/gui/window/loadscreen.cfg
index a57c8bc700f0..8cb03f332f14 100644
--- a/data/gui/window/loadscreen.cfg
+++ b/data/gui/window/loadscreen.cfg
@@ -102,8 +102,10 @@
 					border_size = 5
 					horizontal_alignment = "center"
 					vertical_alignment = "center"
+					horizontal_grow = "true"
 
 					[label]
+						text_alignment = "center"
 						definition = "default_large"
 						id = "status"
 						label = _ "Loading..."
diff --git a/src/gui/dialogs/loadscreen.cpp b/src/gui/dialogs/loadscreen.cpp
index 0db775a3eaef..1f80ed5286dc 100644
--- a/src/gui/dialogs/loadscreen.cpp
+++ b/src/gui/dialogs/loadscreen.cpp
@@ -18,6 +18,8 @@
 #include "gui/widgets/window.hpp"
 #include "gui/widgets/settings.hpp"
 #include "gui/core/timer.hpp"
+#include "gui/auxiliary/find_widget.hpp"
+
 #include "video.hpp"
 #include "cursor.hpp"
 #include <boost/bind.hpp>
@@ -34,8 +36,10 @@ tloadscreen::tloadscreen(boost::function<void()> f)
 	, work_(f)
 	, worker_()
 	, cursor_setter_()
-	, current_stage(NULL)
+	, current_stage_(NULL)
+	, current_visible_stage_(NULL)
 {
+	current_load = this;
 }
 void tloadscreen::show(CVideo& video)
 {
@@ -73,6 +77,7 @@ void tloadscreen::pre_show(twindow& window)
 	worker_.reset(new boost::thread(work_));
 	timer_id_ = add_timer(100, boost::bind(&tloadscreen::timer_callback, this, boost::ref(window)), true);
 	cursor_setter_.reset(new cursor::setter(cursor::WAIT));
+	progress_stage_label_ = &find_widget<tlabel>(&window, "status", false);
 }
 
 void tloadscreen::post_show(twindow& /*window*/)
@@ -89,10 +94,8 @@ void tloadscreen::progress(const char* stage)
 	}
 	// Currently this is a no-op stub
 	if(stage) {
-		// TODO: Update displayed stage
-		current_load->current_stage = stage;
+		current_load->current_stage_ = stage;
 	}
-	// TODO: Indicate progress somehow
 }
 
 tloadscreen* tloadscreen::current_load = NULL;
@@ -101,7 +104,28 @@ void tloadscreen::timer_callback(twindow& window)
 {
 	if (!worker_ || worker_->timed_join(boost::posix_time::milliseconds(0))) {
 		window.close();
+	}
+	if (current_stage_ != current_visible_stage_)
+	{
+		current_visible_stage_ = current_stage_;
+		progress_stage_label_->set_label(current_visible_stage_);
+
+	}
+}
 
+tloadscreen::~tloadscreen()
+{
+	close();
+	current_load = NULL;
+}
+
+void tloadscreen::display(CVideo& video, boost::function<void()> f)
+{
+	if (current_load || video.faked()) {
+		f();
+	}
+	else {
+		tloadscreen(f).show(video);
 	}
 }
 
diff --git a/src/gui/dialogs/loadscreen.hpp b/src/gui/dialogs/loadscreen.hpp
index 02f62f2aadf9..d344eaaa9203 100644
--- a/src/gui/dialogs/loadscreen.hpp
+++ b/src/gui/dialogs/loadscreen.hpp
@@ -14,6 +14,7 @@
 #pragma once
 
 #include "gui/dialogs/dialog.hpp"
+#include "gui/widgets/label.hpp"
 
 #include <boost/function.hpp>
 #include <boost/scoped_ptr.hpp>
@@ -38,22 +39,10 @@ class tloadscreen : public tdialog
 
 	tloadscreen(boost::function<void()> f);
 
-	~tloadscreen()
-	{
-		close();
-	}
-
-	static void display(CVideo& video, boost::function<void()> f) {
-		static bool already_shown = false;
-		if (already_shown) {
-			f();
-		}
-		else {
-			already_shown = true;
-			tloadscreen(f).show(video);
-			already_shown = false;
-		}
-	}
+	~tloadscreen();
+
+	static void display(CVideo& video, boost::function<void()> f);
+	static bool displaying() { return current_load != NULL; }
 
 	void show(CVideo& video);
 	
@@ -66,7 +55,6 @@ class tloadscreen : public tdialog
 	 * when the window is not shown.
 	 */
 	void close();
-
 private:
 	twindow* window_;
 	size_t timer_id_;
@@ -86,8 +74,12 @@ class tloadscreen : public tdialog
 	/** Inherited from tdialog. */
 	void post_show(twindow& window);
 
+	tlabel* progress_stage_label_;
 	static tloadscreen* current_load;
-	const char* current_stage;
+
+	//Note we cannot use std::strings here unless we we explicitly use mutexes.
+	const char* current_stage_;
+	const char* current_visible_stage_;
 };
 
 } // namespace gui2