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gtk-demo: Add warnings to the themes demo

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Add a warning that the flickering here may be
hazardous to photosensitive viewers.
This commit is contained in:
Matthias Clasen 2020-08-09 16:36:00 -04:00
parent a85fc0008c
commit b69dc3d054
2 changed files with 38 additions and 49 deletions
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78
demos/gtk-demo/themes.c
View File

@ -1,6 +1,9 @@
/* Benchmark/Themes
*
* This demo switches themes like a maniac, like some of you.
*
* Warning: This demo involves rapidly flashing changes and may
* be hazardous to photosensitive viewers.
*/
#include <gtk/gtk.h>
@ -123,51 +126,12 @@ change_theme (GtkWidget *widget,
return G_SOURCE_CONTINUE;
}
static void
clicked (GtkGestureClick *gesture,
int n_press,
double x,
double y,
gpointer data)
{
GtkWidget *window;
GdkEvent *event;
GdkModifierType state;
window = gtk_widget_get_ancestor (gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (gesture)), GTK_TYPE_WINDOW);
event = gtk_gesture_get_last_event (GTK_GESTURE (gesture), NULL);
state = gdk_event_get_modifier_state (event);
if (state & GDK_CONTROL_MASK)
{
if (tick_cb)
{
gtk_widget_remove_tick_callback (window, tick_cb);
tick_cb = 0;
}
change_theme (window, NULL, data);
}
else
{
if (tick_cb)
{
gtk_widget_remove_tick_callback (window, tick_cb);
tick_cb = 0;
}
else
{
tick_cb = gtk_widget_add_tick_callback (window, change_theme, data, NULL);
}
}
}
static void
toggle_cycle (GObject *button,
GParamSpec *pspec,
gpointer data)
{
GtkWidget *warning = data;
gboolean active;
GtkWidget *window;
@ -177,7 +141,7 @@ toggle_cycle (GObject *button,
if (active && !tick_cb)
{
tick_cb = gtk_widget_add_tick_callback (window, change_theme, data, NULL);
gtk_window_present (GTK_WINDOW (warning));
}
else if (!active && tick_cb)
{
@ -186,6 +150,25 @@ toggle_cycle (GObject *button,
}
}
static void
warning_closed (GtkDialog *warning,
int response_id,
gpointer data)
{
GtkWidget *window;
GtkWidget *button;
gtk_widget_hide (GTK_WIDGET (warning));
window = gtk_widget_get_ancestor (GTK_WIDGET (data), GTK_TYPE_WINDOW);
button = GTK_WIDGET (g_object_get_data (G_OBJECT (window), "button"));
if (response_id == GTK_RESPONSE_OK)
tick_cb = gtk_widget_add_tick_callback (window, change_theme, data, NULL);
else
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), FALSE);
}
GtkWidget *
do_themes (GtkWidget *do_widget)
{
@ -194,10 +177,9 @@ do_themes (GtkWidget *do_widget)
if (!window)
{
GtkBuilder *builder;
GtkWidget *header;
GtkWidget *button;
GtkWidget *label;
GtkGesture *gesture;
GtkWidget *warning;
builder = gtk_builder_new_from_resource ("/themes/themes.ui");
window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
@ -205,15 +187,13 @@ do_themes (GtkWidget *do_widget)
gtk_window_set_display (GTK_WINDOW (window),
gtk_widget_get_display (do_widget));
header = GTK_WIDGET (gtk_builder_get_object (builder, "header"));
label = GTK_WIDGET (gtk_builder_get_object (builder, "fps"));
gesture = gtk_gesture_click_new ();
g_signal_connect (gesture, "pressed", G_CALLBACK (clicked), label);
gtk_widget_add_controller (header, GTK_EVENT_CONTROLLER (gesture));
warning = GTK_WIDGET (gtk_builder_get_object (builder, "warning"));
g_signal_connect (warning, "response", G_CALLBACK (warning_closed), label);
button = GTK_WIDGET (gtk_builder_get_object (builder, "toggle"));
g_signal_connect (button, "notify::active", G_CALLBACK (toggle_cycle), label);
g_object_set_data (G_OBJECT (window), "button", button);
g_signal_connect (button, "notify::active", G_CALLBACK (toggle_cycle), warning);
gtk_widget_realize (window);
g_object_unref (builder);

9
demos/gtk-demo/themes.ui
View File

@ -1,5 +1,14 @@
<?xml version="1.0" encoding="UTF-8"?>
<interface>
<object class="GtkMessageDialog" id="warning">
<property name="transient-for">window</property>
<property name="modal">1</property>
<property name="hide-on-close">1</property>
<property name="buttons">ok-cancel</property>
<property name="message-type">warning</property>
<property name="text" translatable="yes">Warning</property>
<property name="secondary-text" translatable="yes">This demo involves rapidly flashing changes and may be hazardous to photosensitive viewers.</property>
</object>
<object class="GtkWindow" id="window">
<property name="resizable">0</property>
<child type="titlebar">