[gnome-devel-docs] tutorials C: Progressbar sample/page and Makefile mod
- From: Tiffany Antopolski <antopolski src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gnome-devel-docs] tutorials C: Progressbar sample/page and Makefile mod
- Date: Wed, 20 Jun 2012 19:28:47 +0000 (UTC)
commit b9adfd12d32a3f685396ea6c2db16c30c31c8831
Author: Monica Kochofar <monicakochofar gmail com>
Date: Sat Jun 16 17:46:22 2012 -0400
tutorials C: Progressbar sample/page and Makefile mod
platform-demos/C/progressbar.c.page | 46 ++++++++++++++++++
platform-demos/C/samples/progressbar.c | 83 ++++++++++++++++++++++++++++++++
platform-demos/Makefile.am | 2 +
3 files changed, 131 insertions(+), 0 deletions(-)
---
diff --git a/platform-demos/C/progressbar.c.page b/platform-demos/C/progressbar.c.page
new file mode 100644
index 0000000..944b58b
--- /dev/null
+++ b/platform-demos/C/progressbar.c.page
@@ -0,0 +1,46 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<page xmlns="http://projectmallard.org/1.0/"
+ xmlns:xi="http://www.w3.org/2001/XInclude"
+ type="guide" style="task"
+ id="progressbar.c">
+ <info>
+ <link type="guide" xref="beginner.c#display-widgets"/>
+ <link type="seealso" xref="spinner.c"/>
+ <revision version="0.1" date="2012-06-16" status="draft"/>
+
+ <credit type="author copyright">
+ <name>Monica Kochofar</name>
+ <email>monicakochofar gmail com</email>
+ <years>2012</years>
+ </credit>
+
+ <desc>A widget which indicates progress visually</desc>
+ </info>
+
+ <title>ProgressBar</title>
+
+ <media type="video" mime="application/ogv" src="media/progressbar.ogv">
+ <tt:tt xmlns:tt="http://www.w3.org/ns/ttml">
+ <tt:body>
+ <tt:div begin="0s" end="6s">
+ <tt:p>
+ Pressing any key stops and starts this ProgressBar.
+ </tt:p>
+ </tt:div>
+ </tt:body>
+ </tt:tt>
+ </media>
+ <p>This ProgressBar is stopped and started by pressing any key.</p>
+
+ <code mime="text/x-csrc" style="numbered">
+<xi:include href="samples/progressbar.c" parse="text"><xi:fallback/></xi:include></code>
+<p>
+ In this sample we used the following:
+</p>
+<list>
+ <item><p><link href="http://developer.gnome.org/gtk3/3.4/GtkApplication.html">GtkApplication</link></p></item>
+ <item><p><link href="http://developer.gnome.org/gtk3/3.4/GtkWindow.html">GtkWindow</link></p></item>
+ <item><p><link href="http://developer.gnome.org/gtk3/stable/GtkProgressBar.html">GtkProgressBar</link></p></item>
+ <item><p><link href="http://developer.gnome.org/glib/stable/glib-The-Main-Event-Loop.html#g-timeout-add">G_Timeout</link></p></item>
+</list>
+</page>
diff --git a/platform-demos/C/samples/progressbar.c b/platform-demos/C/samples/progressbar.c
new file mode 100644
index 0000000..3bb0ef5
--- /dev/null
+++ b/platform-demos/C/samples/progressbar.c
@@ -0,0 +1,83 @@
+#include <gtk/gtk.h>
+
+/*Global variable used to keep track of the progressbar's state*/
+guint sourceID;
+
+
+/*A function that pulses the progressbar once each time it is called*/
+static gboolean
+pulse (gpointer user_data)
+{
+ GtkWidget *progress_bar = user_data;
+
+ gtk_progress_bar_pulse (GTK_PROGRESS_BAR (progress_bar));
+
+ return TRUE;
+}
+
+
+
+/*A function that causes the progressbar to start pulsing, or stop, according
+to how many key-press-events have taken place*/
+static gboolean
+key_press_event (GtkWidget *widget,
+ GdkEvent *event,
+ gpointer user_data)
+{
+ GtkWidget *progress_bar = user_data;
+
+ if (sourceID == 0)
+ sourceID = g_timeout_add (100, pulse, GTK_PROGRESS_BAR (progress_bar));
+ else {
+ g_source_remove (sourceID);
+ sourceID = 0;
+ }
+
+ return TRUE;
+}
+
+
+
+static void
+activate (GtkApplication *app,
+ gpointer user_data)
+{
+ GtkWidget *window;
+ GtkWidget *progress_bar;
+
+ /*Create a window with a title, and a default size*/
+ window = gtk_application_window_new (app);
+ gtk_window_set_title (GTK_WINDOW (window), "ProgressBar Example");
+ gtk_window_set_default_size (GTK_WINDOW (window), 220, 20);
+
+ /*Create a progressbar and add it to the window*/
+ progress_bar = gtk_progress_bar_new ();
+ gtk_container_add (GTK_CONTAINER (window), progress_bar);
+
+ /*Use the created pulse function every 100 milliseconds*/
+ sourceID = g_timeout_add (100, pulse, GTK_PROGRESS_BAR (progress_bar));
+
+ /*connecting the key-press signal to the callback*/
+ g_signal_connect (GTK_WINDOW (window),
+ "key-press-event",
+ G_CALLBACK (key_press_event),
+ progress_bar);
+
+ gtk_widget_show_all (window);
+}
+
+
+
+int
+main (int argc, char **argv)
+{
+ GtkApplication *app;
+ int status;
+
+ app = gtk_application_new ("org.gtk.example", G_APPLICATION_FLAGS_NONE);
+ g_signal_connect (app, "activate", G_CALLBACK (activate), NULL);
+ status = g_application_run (G_APPLICATION (app), argc, argv);
+ g_object_unref (app);
+
+ return status;
+}
diff --git a/platform-demos/Makefile.am b/platform-demos/Makefile.am
index fd7d530..42e5cb2 100644
--- a/platform-demos/Makefile.am
+++ b/platform-demos/Makefile.am
@@ -71,6 +71,7 @@ demo_sources = \
samples/messagedialog.js \
samples/messagedialog.py \
samples/messagedialog.vala \
+ samples/progressbar.c \
samples/progressbar.js \
samples/progressbar.py \
samples/progressbar.vala \
@@ -252,6 +253,7 @@ DOC_PAGES = \
messagedialog.py.page \
messagedialog.vala.page \
photo-wall.c.page \
+ progressbar.c.page \
progressbar.js.page \
progressbar.py.page \
progressbar.vala.page \
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