diff options
Diffstat (limited to 'tests/testgridchanges.c')
| -rw-r--r-- | tests/testgridchanges.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/tests/testgridchanges.c b/tests/testgridchanges.c new file mode 100644 index 0000000000..905df251f2 --- /dev/null +++ b/tests/testgridchanges.c @@ -0,0 +1,189 @@ +#include <gtk/gtk.h> + +#define CONTENT_TYPE_WIDGET (content_widget_get_type ()) +G_DECLARE_FINAL_TYPE (ContentWidget, content_widget, CONTENT, WIDGET, GtkWidget) + +struct _ContentWidget +{ + GtkWidget parent_instance; + + int pos; + GskRenderNode *content[10]; + + int width, height; +}; + +struct _ContentWidgetClass +{ + GtkWidgetClass parent_class; +}; + +G_DEFINE_TYPE (ContentWidget, content_widget, GTK_TYPE_WIDGET) + +static void +content_widget_init (ContentWidget *self) +{ +} + +static void +content_widget_measure (GtkWidget *widget, + GtkOrientation orientation, + int for_size, + int *minimum, + int *natural, + int *minimum_content, + int *natural_content) +{ + ContentWidget *self = CONTENT_WIDGET (widget); + + *minimum_content = *natural_content = -1; + if (orientation == GTK_ORIENTATION_VERTICAL) + *minimum = *natural = self->height; + else + *minimum = *natural = self->width; +} + +static void +content_widget_snapshot (GtkWidget *widget, + GtkSnapshot *snapshot) +{ + ContentWidget *self = CONTENT_WIDGET (widget); + + gtk_snapshot_append_node (snapshot, self->content[self->pos]); +} + +static void +content_widget_realize (GtkWidget *widget) +{ + ContentWidget *self = CONTENT_WIDGET (widget); + PangoLayout *layout; + + GTK_WIDGET_CLASS (content_widget_parent_class)->realize (widget); + + layout = gtk_widget_create_pango_layout (widget, ""); + + self->width = self->height = 0; + + for (unsigned int i = 0; i < 10; i++) + { + char text[20]; + GtkSnapshot *snapshot; + graphene_rect_t bounds; + + g_snprintf (text, sizeof (text), "%u", i); + pango_layout_set_text (layout, text, -1); + + snapshot = gtk_snapshot_new (); + gtk_snapshot_append_layout (snapshot, layout, &(GdkRGBA){ 0., 0., 0., 1. }); + self->content[i] = gtk_snapshot_free_to_node (snapshot); + + gsk_render_node_get_bounds (self->content[i], &bounds); + self->width = MAX (self->width, ceilf (bounds.origin.x + bounds.size.width)); + self->height = MAX (self->height, ceilf (bounds.origin.y + bounds.size.height)); + } + + g_object_unref (layout); +} + +static void +content_widget_unrealize (GtkWidget *widget) +{ + ContentWidget *self = CONTENT_WIDGET (widget); + + for (unsigned int i =0; i < 10; i++) + g_clear_pointer (&self->content[i], gsk_render_node_unref); + + GTK_WIDGET_CLASS (content_widget_parent_class)->unrealize (widget); +} + +static void +content_widget_class_init (ContentWidgetClass *class) +{ + GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class); + + widget_class->snapshot = content_widget_snapshot; + widget_class->measure = content_widget_measure; + widget_class->realize = content_widget_realize; + widget_class->unrealize = content_widget_unrealize; + + gtk_widget_class_set_css_name (widget_class, "content"); +} + +static GtkWidget * +content_widget_new (void) +{ + return g_object_new (CONTENT_TYPE_WIDGET, NULL); +} + +static void +content_widget_set_pos (ContentWidget *self, + int pos) +{ + g_return_if_fail (CONTENT_IS_WIDGET (self)); + g_return_if_fail (0 <= pos && pos < 10); + + self->pos = pos; + gtk_widget_queue_draw (GTK_WIDGET (self)); +} + +static GtkWidget *cells[100][100]; + +static gboolean +change_content (GtkWidget *widget, + GdkFrameClock *clock, + gpointer user_data) +{ + for (unsigned int i = 0; i < 100; i++) + for (unsigned int j = 0; j < 100; j++) + content_widget_set_pos (CONTENT_WIDGET (cells[i][j]), g_random_int_range (0, 9)); + + return G_SOURCE_CONTINUE; +} + +static const char css[] = +"content {\n" +" background: pink;\n" +" border: 1px solid black;\n" +"}"; + +int +main (int argc, char *argv[]) +{ + GtkWidget *window, *sw, *grid; + GtkCssProvider *provider; + + gtk_init (); + + provider = gtk_css_provider_new (); + gtk_css_provider_load_from_data (provider, css, -1); + gtk_style_context_add_provider_for_display (gdk_display_get_default (), + GTK_STYLE_PROVIDER (provider), + 1000); + + window = gtk_window_new (); + + sw = gtk_scrolled_window_new (); + gtk_window_set_child (GTK_WINDOW (window), sw); + + grid = gtk_grid_new (); + gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), grid); + + for (unsigned int i = 0; i < 100; i++) + for (unsigned int j = 0; j < 100; j++) + { + GtkWidget *child; + + child = content_widget_new (); + gtk_grid_attach (GTK_GRID (grid), child, i, j, 1, 1); + cells[i][j] = child; + } + + gtk_widget_add_tick_callback (window, change_content, NULL, NULL); + + gtk_window_present (GTK_WINDOW (window)); + + while (g_list_model_get_n_items (gtk_window_get_toplevels ()) > 0) + g_main_context_iteration (NULL, FALSE); + + return 0; +} |