diff options
Diffstat (limited to 'eel/eel-gtk-extensions.c')
| -rw-r--r-- | eel/eel-gtk-extensions.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/eel/eel-gtk-extensions.c b/eel/eel-gtk-extensions.c index e451bdbf..4969d7aa 100644 --- a/eel/eel-gtk-extensions.c +++ b/eel/eel-gtk-extensions.c @@ -353,6 +353,40 @@ eel_gtk_menu_tool_button_get_button (GtkMenuToolButton *tool_button) return button; } +#if !GTK_CHECK_VERSION (3, 0, 0) +/* The standard gtk_adjustment_set_value ignores page size, which + * disagrees with the logic used by scroll bars, for example. + */ +void +eel_gtk_adjustment_set_value (GtkAdjustment *adjustment, + float value) +{ + float upper_page_start, clamped_value; + + g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment)); + + upper_page_start = MAX (gtk_adjustment_get_upper (adjustment) - + gtk_adjustment_get_page_size (adjustment), + gtk_adjustment_get_lower (adjustment)); + clamped_value = CLAMP (value, gtk_adjustment_get_lower (adjustment), upper_page_start); + if (clamped_value != gtk_adjustment_get_value (adjustment)) + { + gtk_adjustment_set_value (adjustment, clamped_value); + gtk_adjustment_value_changed (adjustment); + } +} + +/* Clamp a value if the minimum or maximum has changed. */ +void +eel_gtk_adjustment_clamp_value (GtkAdjustment *adjustment) +{ + g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment)); + + eel_gtk_adjustment_set_value (adjustment, + gtk_adjustment_get_value (adjustment)); +} +#endif + /** * eel_gtk_label_make_bold. * |