func (a *area) OpenTextFieldAt(x, y int) {
if x < 0 || x >= a.width || y < 0 || y >= a.height {
panic(fmt.Errorf("point (%d,%d) outside Area in Area.OpenTextFieldAt()", x, y))
}
a.textfieldx = x
a.textfieldy = y
a.inmenu = false // to start
// we disabled this for the initial Area show; we don't need to anymore
C.gtk_widget_set_no_show_all(a.textfieldw, C.FALSE)
C.gtk_widget_show_all(a.textfieldw)
C.gtk_widget_grab_focus(a.textfieldw)
}
func newArea(ab *areabase) Area {
widget := C.gtk_drawing_area_new()
// the Area's size will be set later
// we need to explicitly subscribe to mouse events with GtkDrawingArea
C.gtk_widget_add_events(widget,
C.GDK_BUTTON_PRESS_MASK|C.GDK_BUTTON_RELEASE_MASK|C.GDK_POINTER_MOTION_MASK|C.GDK_BUTTON_MOTION_MASK|C.GDK_ENTER_NOTIFY_MASK|C.GDK_LEAVE_NOTIFY_MASK)
// and we need to allow focusing on a GtkDrawingArea to enable keyboard events
C.gtk_widget_set_can_focus(widget, C.TRUE)
textfieldw := C.gtk_entry_new()
a := &area{
areabase: ab,
_widget: widget,
drawingarea: (*C.GtkDrawingArea)(unsafe.Pointer(widget)),
scroller: newScroller(widget, false, false, true), // not natively scrollable; no border; have an overlay for OpenTextFieldAt()
clickCounter: new(clickCounter),
textfieldw: textfieldw,
textfield: (*C.GtkEntry)(unsafe.Pointer(textfieldw)),
textfielddone: newEvent(),
}
for _, c := range areaCallbacks {
g_signal_connect(
C.gpointer(unsafe.Pointer(a.drawingarea)),
c.name,
c.callback,
C.gpointer(unsafe.Pointer(a)))
}
a.SetSize(a.width, a.height)
C.gtk_overlay_add_overlay(a.scroller.overlay, a.textfieldw)
g_signal_connect(
C.gpointer(unsafe.Pointer(a.scroller.overlay)),
"get-child-position",
area_get_child_position_callback,
C.gpointer(unsafe.Pointer(a)))
// this part is important
// entering the context menu is considered focusing out
// so we connect to populate-popup to mark that we're entering the context menu (thanks slaf in irc.gimp.net/#gtk+)
// and we have to connect_after to focus-out-event so that it runs after the populate-popup
g_signal_connect(
C.gpointer(unsafe.Pointer(a.textfield)),
"populate-popup",
area_textfield_populate_popup_callback,
C.gpointer(unsafe.Pointer(a)))
g_signal_connect_after(
C.gpointer(unsafe.Pointer(a.textfield)),
"focus-out-event",
area_textfield_focus_out_event_callback,
C.gpointer(unsafe.Pointer(a)))
// the widget shows up initially
C.gtk_widget_set_no_show_all(a.textfieldw, C.TRUE)
return a
}
// SetNoShowAll is a wrapper around gtk_widget_set_no_show_all().
func (v *Widget) SetNoShowAll(noShowAll bool) {
C.gtk_widget_set_no_show_all(v.native(), gbool(noShowAll))
}
