implement progressbar

Makefile

@@ -24,6 +24,7 @@ SRCS =  src/main.cpp\
 		src/app/browser/main/tab/page/navbar/history/forward.cpp\
 		src/app/browser/main/tab/page/navbar/request.cpp\
 		src/app/browser/main/tab/page/navbar/update.cpp\
+		src/app/browser/main/tab/page/progressbar.cpp\
 		src/app/browser/main/tab/label.cpp\
 		src/lib/database.cpp\
 		src/lib/database/session.cpp

po/POTFILES.in

@@ -16,6 +16,7 @@ src/app/browser/main/tab/page/navbar/history/back.cpp
 src/app/browser/main/tab/page/navbar/history/forward.cpp
 src/app/browser/main/tab/page/navbar/request.cpp
 src/app/browser/main/tab/page/navbar/update.cpp
+src/app/browser/main/tab/page/progressbar.cpp
 src/app/browser/main/tab/label.cpp
 src/lib/database.cpp
 src/lib/database/session.cpp

src/app/browser/main/tab/page.cpp

@@ -1,6 +1,7 @@
 #include "page.hpp"
-#include "page/navbar.hpp"
 #include "page/content.hpp"
+#include "page/navbar.hpp"
+#include "page/progressbar.hpp"
 
 using namespace app::browser::main::tab;
 
@@ -39,6 +40,12 @@ Page::Page()
         // because of insert_action_group + append here @TODO
         navbar->refresh();
 
+    progressbar = new page::Progressbar();
+
+        append(
+            * progressbar
+        );
+
     content = new page::Content();
 
         append(
@@ -50,10 +57,17 @@ Page::~Page()
 {
     delete navbar;
     delete content;
+    delete progressbar;
 }
 
 void Page::update()
 {
+    // Reset progress
+    progressbar->set(
+        0
+    );
+
+    // Connect scheme driver
     if ("file" == navbar->get_request_scheme())
     {
         // @TODO
@@ -83,6 +97,10 @@ void Page::update()
             ),
             [this](const Glib::RefPtr<Gio::AsyncResult> & result)
             {
+                progressbar->set(
+                    .25
+                );
+
                 socket_connection = socket_client->connect_to_host_finish(
                     result
                 );
@@ -95,12 +113,20 @@ void Page::update()
                     request.size(),
                     [this](const Glib::RefPtr<Gio::AsyncResult> & result)
                     {
+                        progressbar->set(
+                            .5
+                        );
+
                         // Response
                         socket_connection->get_input_stream()->read_async( // | read_all_async
                             buffer,
                             sizeof(buffer) - 1,
                             [this](const Glib::RefPtr<Gio::AsyncResult> & result)
                             {
+                                progressbar->set(
+                                    .75
+                                );
+
                                 // Parse meta
                                 auto meta = Glib::Regex::split_simple(
                                     R"regex(^(\d+)?\s([\w]+\/[\w]+)?)regex",
@@ -134,6 +160,10 @@ void Page::update()
                                 }
 
                                 socket_connection->close();
+
+                                progressbar->set(
+                                    1
+                                );
                             }
                         );
                     }

src/app/browser/main/tab/page.hpp

@@ -18,8 +18,9 @@ namespace app::browser::main::tab
 {
     namespace page
     {
-        class Navbar;
         class Content;
+        class Navbar;
+        class Progressbar;
     }
 
     class Page : public Gtk::Box
@@ -30,8 +31,9 @@ namespace app::browser::main::tab
         Glib::RefPtr<Gio::SocketClient> socket_client;
         Glib::RefPtr<Gio::SocketConnection> socket_connection;
 
-        page::Navbar * navbar;
         page::Content * content;
+        page::Navbar * navbar;
+        page::Progressbar * progressbar;
 
         public:
 

src/app/browser/main/tab/page/progressbar.cpp

@@ -0,0 +1,53 @@
+#include "progressbar.hpp"
+
+using namespace app::browser::main::tab::page;
+
+Progressbar::Progressbar()
+{
+    set_margin_top(
+        MARGIN
+    );
+
+    set_margin_bottom(
+        MARGIN
+    );
+
+    set_pulse_step(
+        PULSE_STEP
+    );
+
+    set_opacity(0);
+}
+
+Progressbar::~Progressbar() = default;
+
+// Public actions
+void Progressbar::set(
+    double fraction
+) {
+    // Toggle transparency
+    set_opacity(
+        fraction < 1 ? 1 : 0
+    );
+
+    // Reset initial progress
+    progress = fraction;
+
+    // Animate progress function
+    Glib::signal_timeout().connect(
+        [this]() -> bool
+        {
+            double current = get_fraction();
+
+            if (current < progress)
+            {
+                set_fraction(
+                    current + PULSE_STEP
+                );
+            }
+
+            return current < 1;
+        },
+        ANIMATION_TIME
+    );
+}

src/app/browser/main/tab/page/progressbar.hpp

@@ -0,0 +1,28 @@
+#ifndef APP_BROWSER_MAIN_TAB_PAGE_PROGRESSBAR_HPP
+#define APP_BROWSER_MAIN_TAB_PAGE_PROGRESSBAR_HPP
+
+#include <glibmm/main.h>
+#include <gtkmm/progressbar.h>
+
+namespace app::browser::main::tab::page
+{
+    class Progressbar : public Gtk::ProgressBar
+    {
+        const int MARGIN = 2;
+        const double PULSE_STEP = .1;
+        const int ANIMATION_TIME = 10;
+
+        double progress = 0;
+
+        public:
+
+            Progressbar();
+            ~Progressbar();
+
+            void set(
+                double fraction
+            );
+    };
+}
+
+#endif // APP_BROWSER_MAIN_TAB_PAGE_PROGRESSBAR_HPP