forked from AuroraMiddleware/gtk
281 lines
7.0 KiB
C
281 lines
7.0 KiB
C
/* Benchmark/Scrolling
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*
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* This demo scrolls a view with various content.
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*/
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#include <gtk/gtk.h>
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static guint tick_cb;
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static GtkAdjustment *hadjustment;
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static GtkAdjustment *vadjustment;
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static GtkWidget *window = NULL;
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static GtkWidget *scrolledwindow;
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static int selected;
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#define N_WIDGET_TYPES 6
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static int hincrement = 5;
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static int vincrement = 5;
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static gboolean
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scroll_cb (GtkWidget *widget,
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GdkFrameClock *frame_clock,
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gpointer data)
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{
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double value;
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value = gtk_adjustment_get_value (vadjustment);
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if (value + vincrement <= gtk_adjustment_get_lower (vadjustment) ||
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(value + vincrement >= gtk_adjustment_get_upper (vadjustment) - gtk_adjustment_get_page_size (vadjustment)))
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vincrement = - vincrement;
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gtk_adjustment_set_value (vadjustment, value + vincrement);
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value = gtk_adjustment_get_value (hadjustment);
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if (value + hincrement <= gtk_adjustment_get_lower (hadjustment) ||
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(value + hincrement >= gtk_adjustment_get_upper (hadjustment) - gtk_adjustment_get_page_size (hadjustment)))
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hincrement = - hincrement;
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gtk_adjustment_set_value (hadjustment, value + hincrement);
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return G_SOURCE_CONTINUE;
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}
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extern GtkWidget *create_icon (void);
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static void
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populate_icons (void)
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{
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GtkWidget *grid;
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int top, left;
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grid = gtk_grid_new ();
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gtk_widget_set_halign (grid, GTK_ALIGN_CENTER);
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gtk_widget_set_margin_start (grid, 10);
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gtk_widget_set_margin_end (grid, 10);
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gtk_widget_set_margin_top (grid, 10);
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gtk_widget_set_margin_bottom (grid, 10);
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gtk_grid_set_row_spacing (GTK_GRID (grid), 10);
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gtk_grid_set_column_spacing (GTK_GRID (grid), 10);
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for (top = 0; top < 100; top++)
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for (left = 0; left < 15; left++)
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gtk_grid_attach (GTK_GRID (grid), create_icon (), left, top, 1, 1);
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hincrement = 0;
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vincrement = 5;
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gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolledwindow),
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GTK_POLICY_NEVER,
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GTK_POLICY_AUTOMATIC);
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gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (scrolledwindow), grid);
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}
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static char *content;
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static gsize content_len;
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extern void fontify (GtkTextBuffer *buffer);
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static void
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populate_text (gboolean hilight)
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{
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GtkWidget *textview;
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GtkTextBuffer *buffer;
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if (!content)
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{
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GBytes *bytes;
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bytes = g_resources_lookup_data ("/sources/font_features.c", 0, NULL);
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content = g_bytes_unref_to_data (bytes, &content_len);
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}
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buffer = gtk_text_buffer_new (NULL);
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gtk_text_buffer_set_text (buffer, content, (int)content_len);
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if (hilight)
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fontify (buffer);
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textview = gtk_text_view_new ();
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gtk_text_view_set_buffer (GTK_TEXT_VIEW (textview), buffer);
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hincrement = 0;
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vincrement = 5;
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gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolledwindow),
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GTK_POLICY_NEVER,
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GTK_POLICY_AUTOMATIC);
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gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (scrolledwindow), textview);
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}
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static void
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populate_image (void)
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{
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GtkWidget *image;
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if (!content)
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{
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GBytes *bytes;
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bytes = g_resources_lookup_data ("/sources/font_features.c", 0, NULL);
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content = g_bytes_unref_to_data (bytes, &content_len);
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}
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image = gtk_picture_new_for_resource ("/sliding_puzzle/portland-rose.jpg");
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gtk_picture_set_can_shrink (GTK_PICTURE (image), FALSE);
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hincrement = 5;
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vincrement = 5;
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gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolledwindow),
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GTK_POLICY_AUTOMATIC,
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GTK_POLICY_AUTOMATIC);
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gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (scrolledwindow), image);
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}
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extern GtkWidget *create_weather_view (void);
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static void
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populate_list (void)
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{
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GtkWidget *list;
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list = create_weather_view ();
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hincrement = 5;
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vincrement = 0;
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gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolledwindow),
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GTK_POLICY_AUTOMATIC,
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GTK_POLICY_AUTOMATIC);
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gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (scrolledwindow), list);
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}
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extern GtkWidget *create_color_grid (void);
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static void
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populate_grid (void)
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{
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GtkWidget *list;
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list = create_color_grid ();
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hincrement = 0;
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vincrement = 5;
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gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolledwindow),
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GTK_POLICY_AUTOMATIC,
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GTK_POLICY_AUTOMATIC);
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gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (scrolledwindow), list);
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}
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static void
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set_widget_type (int type)
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{
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if (tick_cb)
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gtk_widget_remove_tick_callback (window, tick_cb);
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if (gtk_scrolled_window_get_child (GTK_SCROLLED_WINDOW (scrolledwindow)))
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gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (scrolledwindow), NULL);
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selected = type;
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switch (selected)
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{
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case 0:
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gtk_window_set_title (GTK_WINDOW (window), "Scrolling icons");
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populate_icons ();
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break;
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case 1:
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gtk_window_set_title (GTK_WINDOW (window), "Scrolling plain text");
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populate_text (FALSE);
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break;
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case 2:
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gtk_window_set_title (GTK_WINDOW (window), "Scrolling complex text");
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populate_text (TRUE);
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break;
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case 3:
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gtk_window_set_title (GTK_WINDOW (window), "Scrolling a big image");
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populate_image ();
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break;
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case 4:
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gtk_window_set_title (GTK_WINDOW (window), "Scrolling a list");
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populate_list ();
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break;
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case 5:
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gtk_window_set_title (GTK_WINDOW (window), "Scrolling a grid");
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populate_grid ();
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break;
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default:
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g_assert_not_reached ();
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}
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tick_cb = gtk_widget_add_tick_callback (window, scroll_cb, NULL, NULL);
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}
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void
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iconscroll_next_clicked_cb (GtkButton *source,
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gpointer user_data)
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{
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int new_index;
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if (selected + 1 >= N_WIDGET_TYPES)
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new_index = 0;
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else
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new_index = selected + 1;
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set_widget_type (new_index);
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}
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void
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iconscroll_prev_clicked_cb (GtkButton *source,
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gpointer user_data)
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{
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int new_index;
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if (selected - 1 < 0)
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new_index = N_WIDGET_TYPES - 1;
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else
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new_index = selected - 1;
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set_widget_type (new_index);
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}
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GtkWidget *
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do_iconscroll (GtkWidget *do_widget)
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{
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if (!window)
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{
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GtkBuilder *builder;
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builder = gtk_builder_new_from_resource ("/iconscroll/iconscroll.ui");
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window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
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g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
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gtk_window_set_display (GTK_WINDOW (window),
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gtk_widget_get_display (do_widget));
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scrolledwindow = GTK_WIDGET (gtk_builder_get_object (builder, "scrolledwindow"));
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gtk_widget_realize (window);
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hadjustment = GTK_ADJUSTMENT (gtk_builder_get_object (builder, "hadjustment"));
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vadjustment = GTK_ADJUSTMENT (gtk_builder_get_object (builder, "vadjustment"));
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set_widget_type (0);
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g_object_unref (builder);
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}
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if (!gtk_widget_get_visible (window))
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gtk_widget_show (window);
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else
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gtk_window_destroy (GTK_WINDOW (window));
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return window;
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}
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