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gtk4-demo: Add a tooltip to image scaling

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This commit is contained in:
Matthias Clasen 2023-03-13 16:54:22 +01:00
parent 3eb9afb0ca
commit 0c1ec82a74
1 changed files with 80 additions and 1 deletions
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81
demos/gtk-demo/demo3widget.c
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@ -28,6 +28,80 @@ struct _Demo3WidgetClass
G_DEFINE_TYPE (Demo3Widget, demo3_widget, GTK_TYPE_WIDGET)
static gboolean
query_tooltip (GtkWidget *widget,
int x,
int y,
gboolean keyboard_mode,
GtkTooltip *tooltip,
gpointer data)
{
Demo3Widget *self = DEMO3_WIDGET (widget);
GtkWidget *grid;
GtkWidget *label;
char *s, *s2;
const char *filter[] = { "Linear", "Nearest", "Trilinear" };
int precision, l;
grid = gtk_grid_new ();
gtk_grid_set_column_spacing (GTK_GRID (grid), 12);
gtk_grid_set_row_spacing (GTK_GRID (grid), 6);
label = gtk_label_new ("Texture");
gtk_label_set_xalign (GTK_LABEL (label), 0);
gtk_grid_attach (GTK_GRID (grid), label, 0, 0, 1, 1);
s = g_strdup_printf ("%d\342\200\206\303\227\342\200\206%d",
gdk_texture_get_width (self->texture),
gdk_texture_get_height (self->texture));
label = gtk_label_new (s);
g_free (s);
gtk_label_set_xalign (GTK_LABEL (label), 1);
gtk_grid_attach (GTK_GRID (grid), label, 1, 0, 1, 1);
label = gtk_label_new ("Rotation");
gtk_label_set_xalign (GTK_LABEL (label), 0);
gtk_grid_attach (GTK_GRID (grid), label, 0, 1, 1, 1);
s = g_strdup_printf ("%.1f", self->angle);
if (g_str_has_suffix (s, ".0"))
s[strlen (s) - 2] = '\0';
s2 = g_strconcat (s, "\302\260", NULL);
label = gtk_label_new (s2);
g_free (s2);
g_free (s);
gtk_label_set_xalign (GTK_LABEL (label), 1);
gtk_grid_attach (GTK_GRID (grid), label, 1, 1, 1, 1);
label = gtk_label_new ("Scale");
gtk_label_set_xalign (GTK_LABEL (label), 0);
gtk_grid_attach (GTK_GRID (grid), label, 0, 2, 1, 1);
precision = 1;
do {
s = g_strdup_printf ("%.*f", precision, self->scale);
l = strlen (s) - 1;
while (s[l] == '0')
l--;
if (s[l] == '.')
s[l] = '\0';
precision++;
} while (strcmp (s, "0") == 0);
label = gtk_label_new (s);
g_free (s);
gtk_label_set_xalign (GTK_LABEL (label), 1);
gtk_grid_attach (GTK_GRID (grid), label, 1, 2, 1, 1);
label = gtk_label_new ("Filter");
gtk_label_set_xalign (GTK_LABEL (label), 0);
gtk_grid_attach (GTK_GRID (grid), label, 0, 3, 1, 1);
label = gtk_label_new (filter[self->filter]);
gtk_label_set_xalign (GTK_LABEL (label), 1);
gtk_grid_attach (GTK_GRID (grid), label, 1, 3, 1, 1);
gtk_tooltip_set_custom (tooltip, grid);
return TRUE;
}
static void
demo3_widget_init (Demo3Widget *self)
{
@ -316,7 +390,12 @@ demo3_widget_new (const char *resource)
texture = gdk_texture_new_from_resource (resource);
self = g_object_new (DEMO3_TYPE_WIDGET, "texture", texture, NULL);
self = g_object_new (DEMO3_TYPE_WIDGET,
"texture", texture,
"has-tooltip", TRUE,
NULL);
g_signal_connect (self, "query-tooltip", G_CALLBACK (query_tooltip), NULL);
g_object_unref (texture);