Show download size for each option of game assets

src/states_screens/download_assets.cpp

@@ -26,6 +26,7 @@
 #include "io/file_manager.hpp"
 #include "online/http_request.hpp"
 #include "states_screens/state_manager.hpp"
+#include "utils/download_assets_size.hpp"
 #include "utils/string_utils.hpp"
 #include "utils/translation.hpp"
 #include "main_loop.hpp"
@@ -45,11 +46,26 @@ void DownloadAssets::beforeAddingWidget()
 
 }   // beforeAddingWidget
 
+// -----------------------------------------------------------------------------
+void DownloadAssets::updateDownloadSize()
+{
+    m_progress->setValue(0);
+    core::stringw unit="";
+    unsigned n = getDownloadAssetsSize(m_all_tracks->getState(),
+        m_hd_textures->getState());
+    float f = ((int)(n/1024.0f/1024.0f*10.0f+0.5f))/10.0f;
+    char s[32];
+    sprintf(s, "%.1f", f);
+    unit = _("%s MB", s);
+    // I18N: File size of game assets or addons downloading
+    core::stringw size = _("Size: %s", unit.c_str());
+    m_progress->setText(size);
+}   // updateDownloadSize
+
 // -----------------------------------------------------------------------------
 void DownloadAssets::init()
 {
     m_progress = getWidget<ProgressBarWidget>("progress");
-    m_progress->setVisible(false);
     m_all_tracks = getWidget<CheckBoxWidget>("all-tracks");
     m_all_tracks->setActive(true);
     m_all_tracks->setVisible(true);
@@ -58,6 +74,7 @@ void DownloadAssets::init()
     m_hd_textures->setActive(true);
     m_hd_textures->setVisible(true);
     m_hd_textures->setState(false);
+    updateDownloadSize();
     m_ok = getWidget<IconButtonWidget>("ok");
     m_ok->setActive(true);
     m_ok->setVisible(true);
@@ -89,7 +106,9 @@ void DownloadAssets::eventCallback(Widget* widget, const std::string& name,
 {
     if (m_downloading_now)
         return;
-    if (name == "buttons")
+    if (name == "all-tracks" || name == "hd-textures")
+        updateDownloadSize();
+    else if (name == "buttons")
     {
         const std::string& button = getWidget<GUIEngine::RibbonWidget>("buttons")
             ->getSelectionIDString(PLAYER_ID_GAME_MASTER);
@@ -97,8 +116,8 @@ void DownloadAssets::eventCallback(Widget* widget, const std::string& name,
         {
             m_downloading_now = true;
             m_ok->setActive(false);
+            m_progress->setText("");
             m_progress->setValue(0);
-            m_progress->setVisible(true);
             m_all_tracks->setActive(false);
             m_hd_textures->setActive(false);
             std::string download_url = stk_config->m_assets_download_url;

src/states_screens/download_assets.hpp

@@ -60,6 +60,8 @@ private:
     Online::HTTPRequest* m_download_request;
 
     std::thread m_download_thread;
+
+    void updateDownloadSize();
 public:
     friend class GUIEngine::ScreenSingleton<DownloadAssets>;
 

src/utils/download_assets_size.hpp

@@ -0,0 +1,38 @@
+//  SuperTuxKart - a fun racing game with go-kart
+//
+//  Copyright (C) 2019 SuperTuxKart-Team
+//
+//  This program is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU General Public License
+//  as published by the Free Software Foundation; either version 3
+//  of the License, or (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+#ifndef HEADER_DOWNLOAD_ASSETS_SIZE_HPP
+#define HEADER_DOWNLOAD_ASSETS_SIZE_HPP
+/* Return .zip file size in bytes (as in ls -l)
+ */
+inline unsigned getDownloadAssetsSize(bool is_full, bool is_hd)
+{
+    // Todo: generated from some sed script
+    unsigned full_hd = 188442091;
+    unsigned full_nonhd = 83487825;
+    unsigned nonfull_hd = 166310030;
+    unsigned nonfull_nonhd = 69282428;
+    if (is_full && is_hd)
+        return full_hd;
+    if (is_full && !is_hd)
+        return full_nonhd;
+    if (!is_full && is_hd)
+        return nonfull_hd;
+    return nonfull_nonhd;
+}
+#endif