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8c68050af8
Add a test that takes four copies of the widget-factory widgets and scrolls them around to test how smoothly we can scroll and draw.
127 lines
3.5 KiB
C
127 lines
3.5 KiB
C
/* -*- mode: C; c-basic-offset: 2; indent-tabs-mode: nil; -*- */
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#include <gtk/gtk.h>
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#include <math.h>
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#include "frame-stats.h"
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GtkWidget *
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create_widget_factory_content (void)
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{
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GError *error = NULL;
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GtkBuilder *builder;
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GtkWidget *result;
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builder = gtk_builder_new ();
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gtk_builder_add_from_file (builder,
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"../demos/widget-factory/widget-factory.ui",
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&error);
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if (error != NULL)
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g_error ("Failed to create widgets: %s\n", error->message);
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result = GTK_WIDGET (gtk_builder_get_object (builder, "box1"));
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g_object_ref (result);
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gtk_container_remove (GTK_CONTAINER (gtk_widget_get_parent (result)),
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result);
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g_object_unref (builder);
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return result;
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}
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static void
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set_adjustment_to_fraction (GtkAdjustment *adjustment,
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gdouble fraction)
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{
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gdouble upper = gtk_adjustment_get_upper (adjustment);
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gdouble lower = gtk_adjustment_get_lower (adjustment);
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gdouble page_size = gtk_adjustment_get_page_size (adjustment);
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gtk_adjustment_set_value (adjustment,
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(1 - fraction) * lower +
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fraction * (upper - page_size));
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}
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gboolean
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scroll_viewport (GtkWidget *viewport,
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GdkFrameClock *frame_clock,
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gpointer user_data)
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{
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static gint64 start_time;
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gint64 now = gdk_frame_clock_get_frame_time (frame_clock);
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gdouble elapsed;
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GtkAdjustment *hadjustment, *vadjustment;
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if (start_time == 0)
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start_time = now;
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elapsed = (now - start_time) / 1000000.;
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hadjustment = gtk_scrollable_get_hadjustment (GTK_SCROLLABLE (viewport));
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vadjustment = gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (viewport));
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set_adjustment_to_fraction (hadjustment, 0.5 + 0.5 * sin (elapsed));
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set_adjustment_to_fraction (vadjustment, 0.5 + 0.5 * cos (elapsed));
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return TRUE;
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}
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static GOptionEntry options[] = {
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{ 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 *scrolled_window;
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GtkWidget *viewport;
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GtkWidget *grid;
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GError *error = NULL;
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int i;
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GOptionContext *context = g_option_context_new (NULL);
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g_option_context_add_main_entries (context, options, NULL);
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frame_stats_add_options (g_option_context_get_main_group (context));
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g_option_context_add_group (context,
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gtk_get_option_group (TRUE));
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if (!g_option_context_parse (context, &argc, &argv, &error))
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{
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g_printerr ("Option parsing failed: %s\n", error->message);
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return 1;
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}
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window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
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frame_stats_ensure (GTK_WINDOW (window));
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gtk_window_set_default_size (GTK_WINDOW (window), 800, 600);
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scrolled_window = gtk_scrolled_window_new (NULL, NULL);
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gtk_container_add (GTK_CONTAINER (window), scrolled_window);
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viewport = gtk_viewport_new (NULL, NULL);
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gtk_container_add (GTK_CONTAINER (scrolled_window), viewport);
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grid = gtk_grid_new ();
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gtk_container_add (GTK_CONTAINER (viewport), grid);
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for (i = 0; i < 4; i++)
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{
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GtkWidget *content = create_widget_factory_content ();
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gtk_grid_attach (GTK_GRID (grid), content,
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i % 2, i / 2, 1, 1);
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g_object_unref (content);
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}
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gtk_widget_add_tick_callback (viewport,
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scroll_viewport,
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NULL,
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NULL);
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gtk_widget_show_all (window);
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g_signal_connect (window, "destroy",
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G_CALLBACK (gtk_main_quit), NULL);
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gtk_main ();
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return 0;
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}
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