mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-14 12:41:07 +00:00
120 lines
3.0 KiB
C
120 lines
3.0 KiB
C
#include <gtk/gtk.h>
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static GtkWidget *
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create_level_bar (void)
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{
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GtkWidget *bar;
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bar = gtk_level_bar_new ();
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gtk_level_bar_set_min_value (GTK_LEVEL_BAR (bar), 0.0);
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gtk_level_bar_set_max_value (GTK_LEVEL_BAR (bar), 10.0);
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gtk_level_bar_add_offset_value (GTK_LEVEL_BAR (bar),
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GTK_LEVEL_BAR_OFFSET_LOW, 1.0);
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gtk_level_bar_add_offset_value (GTK_LEVEL_BAR (bar),
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GTK_LEVEL_BAR_OFFSET_HIGH, 9.0);
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gtk_level_bar_add_offset_value (GTK_LEVEL_BAR (bar),
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"full", 10.0);
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gtk_level_bar_add_offset_value (GTK_LEVEL_BAR (bar),
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"my-offset", 5.0);
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return bar;
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}
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static void
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add_custom_css (void)
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{
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GtkCssProvider *provider;
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const char data[] =
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"levelbar block.my-offset {"
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" background: magenta;"
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"}";
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provider = gtk_css_provider_new ();
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gtk_css_provider_load_from_string (provider, data);
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gtk_style_context_add_provider_for_display (gdk_display_get_default (),
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GTK_STYLE_PROVIDER (provider),
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GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
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}
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static gboolean
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increase_level (gpointer data)
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{
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GtkLevelBar *bar = data;
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double value;
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value = gtk_level_bar_get_value (bar);
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value += 0.1;
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if (value >= gtk_level_bar_get_max_value (bar))
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value = gtk_level_bar_get_min_value (bar);
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gtk_level_bar_set_value (bar, value);
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return G_SOURCE_CONTINUE;
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}
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static void
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toggle (GtkSwitch *sw, GParamSpec *pspec, GtkLevelBar *bar)
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{
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if (gtk_switch_get_active (sw))
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gtk_level_bar_set_mode (bar, GTK_LEVEL_BAR_MODE_DISCRETE);
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else
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gtk_level_bar_set_mode (bar, GTK_LEVEL_BAR_MODE_CONTINUOUS);
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}
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static void
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quit_cb (GtkWidget *widget,
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gpointer data)
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{
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gboolean *done = data;
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*done = TRUE;
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g_main_context_wakeup (NULL);
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}
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int
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main (int argc, char *argv[])
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{
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GtkWidget *window;
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GtkWidget *box;
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GtkWidget *bar;
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GtkWidget *box2;
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GtkWidget *sw;
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gboolean done = FALSE;
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gtk_init ();
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add_custom_css ();
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window = gtk_window_new ();
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gtk_window_set_default_size (GTK_WINDOW (window), 500, 100);
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box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 10);
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gtk_widget_set_margin_start (box, 20);
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gtk_widget_set_margin_end (box, 20);
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gtk_widget_set_margin_top (box, 20);
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gtk_widget_set_margin_bottom (box, 20);
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bar = create_level_bar ();
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gtk_window_set_child (GTK_WINDOW (window), box);
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gtk_box_append (GTK_BOX (box), bar);
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box2 = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 10);
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gtk_box_append (GTK_BOX (box), box2);
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gtk_box_append (GTK_BOX (box2), gtk_label_new ("Discrete"));
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sw = gtk_switch_new ();
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gtk_box_append (GTK_BOX (box2), sw);
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g_signal_connect (sw, "notify::active", G_CALLBACK (toggle), bar);
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gtk_window_present (GTK_WINDOW (window));
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g_signal_connect (window, "destroy", G_CALLBACK (quit_cb), &done);
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g_timeout_add (100, increase_level, bar);
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while (!done)
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g_main_context_iteration (NULL, TRUE);
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return 0;
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}
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