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// +build !darwin
// 7 july 2014
package ui
import (
"unsafe"
"fmt"
)
// #include "gtk_unix.h"
// extern gboolean windowClosing(GtkWidget *, GdkEvent *, gpointer);
// extern gboolean windowResizing(GtkWidget *, GdkEvent *, gpointer);
import "C"
type window struct {
widget *C.GtkWidget
container *C.GtkContainer
bin *C.GtkBin
window *C.GtkWindow
layoutc *C.GtkContainer
layout *C.GtkLayout
child Control
closing *event
}
func newWindow(title string, width int, height int) *Request {
c := make(chan interface{})
return &Request{
op: func() {
widget := C.gtk_window_new(C.GTK_WINDOW_TOPLEVEL)
ctitle := togstr(title)
defer freegstr(ctitle)
layoutw := C.gtk_layout_new(nil, nil)
w := &window{
widget: widget,
container: (*C.GtkContainer)(unsafe.Pointer(widget)),
bin: (*C.GtkBin)(unsafe.Pointer(widget)),
window: (*C.GtkWindow)(unsafe.Pointer(widget)),
layoutc: (*C.GtkContainer)(unsafe.Pointer(layoutw)),
layout: (*C.GtkLayout)(unsafe.Pointer(layoutw)),
closing: newEvent(),
}
C.gtk_window_set_title(w.window, ctitle)
g_signal_connect(
C.gpointer(unsafe.Pointer(w.window)),
"delete-event",
C.GCallback(C.windowClosing),
C.gpointer(unsafe.Pointer(w)))
g_signal_connect(
C.gpointer(unsafe.Pointer(w.window)),
"configure-event",
C.GCallback(C.windowResizing),
C.gpointer(unsafe.Pointer(w)))
// TODO size
C.gtk_container_add(w.container, layoutw)
c <- w
},
resp: c,
}
}
func (w *window) SetControl(control Control) *Request {
c := make(chan interface{})
return &Request{
op: func() {
if w.child != nil { // unparent existing control
w.child.unparent()
}
control.unparent()
control.parent(w)
w.child = control
c <- struct{}{}
},
resp: c,
}
}
func (w *window) Title() *Request {
c := make(chan interface{})
return &Request{
op: func() {
c <- fromgstr(C.gtk_window_get_title(w.window))
},
resp: c,
}
}
func (w *window) SetTitle(title string) *Request {
c := make(chan interface{})
return &Request{
op: func() {
ctitle := togstr(title)
defer freegstr(ctitle)
C.gtk_window_set_title(w.window, ctitle)
c <- struct{}{}
},
resp: c,
}
}
func (w *window) Show() *Request {
c := make(chan interface{})
return &Request{
op: func() {
C.gtk_widget_show_all(w.widget)
c <- struct{}{}
},
resp: c,
}
}
func (w *window) Hide() *Request {
c := make(chan interface{})
return &Request{
op: func() {
C.gtk_widget_hide(w.widget)
c <- struct{}{}
},
resp: c,
}
}
func (w *window) Close() *Request {
c := make(chan interface{})
return &Request{
op: func() {
C.gtk_widget_destroy(w.widget)
c <- struct{}{}
},
resp: c,
}
}
func (w *window) OnClosing(e func(c Doer) bool) *Request {
c := make(chan interface{})
return &Request{
op: func() {
w.closing.setbool(e)
c <- struct{}{}
},
resp: c,
}
}
//export windowClosing
func windowClosing(wid *C.GtkWidget, e *C.GdkEvent, data C.gpointer) C.gboolean {
w := (*window)(unsafe.Pointer(data))
close := w.closing.fire()
if close {
return C.GDK_EVENT_PROPAGATE // will do gtk_widget_destroy(), which is what we want (thanks ebassi in irc.gimp.net/#gtk+)
}
return C.GDK_EVENT_STOP // keeps window alive
}
//export windowResizing
func windowResizing(wid *C.GtkWidget, event *C.GdkEvent, data C.gpointer) C.gboolean {
w := (*window)(unsafe.Pointer(data))
e := (*C.GdkEventConfigure)(unsafe.Pointer(event))
_ = w // TODO
// TODO this does not take CSD into account; my attempts at doing so so far have failed to work correctly in the face of rapid live resizing
// TODO triggered twice on each resize or maximize for some reason???
fmt.Printf("new size %d x %d\n", e.width, e.height)
return C.GDK_EVENT_PROPAGATE // let's be safe
}
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