113 lines
3.0 KiB
Go
113 lines
3.0 KiB
Go
// +build !windows,!darwin
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// 7 july 2014
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package ui
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import (
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"unsafe"
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"fmt"
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)
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// #include "gtk_unix.h"
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// extern gboolean windowClosing(GtkWidget *, GdkEvent *, gpointer);
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// extern void windowResizing(GtkWidget *, GdkRectangle *, gpointer);
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import "C"
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type window struct {
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widget *C.GtkWidget
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wc *C.GtkContainer
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bin *C.GtkBin
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window *C.GtkWindow
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layoutw *C.GtkWidget
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layoutc *C.GtkContainer
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layout *C.GtkLayout
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closing *event
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*container
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}
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func newWindow(title string, width int, height int, control Control) *window {
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widget := C.gtk_window_new(C.GTK_WINDOW_TOPLEVEL)
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ctitle := togstr(title)
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defer freegstr(ctitle)
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layoutw := C.gtk_layout_new(nil, nil)
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w := &window{
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widget: widget,
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wc: (*C.GtkContainer)(unsafe.Pointer(widget)),
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bin: (*C.GtkBin)(unsafe.Pointer(widget)),
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window: (*C.GtkWindow)(unsafe.Pointer(widget)),
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layoutw: layoutw,
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layoutc: (*C.GtkContainer)(unsafe.Pointer(layoutw)),
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layout: (*C.GtkLayout)(unsafe.Pointer(layoutw)),
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closing: newEvent(),
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container: new(container),
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}
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C.gtk_window_set_title(w.window, ctitle)
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g_signal_connect(
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C.gpointer(unsafe.Pointer(w.window)),
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"delete-event",
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C.GCallback(C.windowClosing),
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C.gpointer(unsafe.Pointer(w)))
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// we connect to the layout's size-allocate, not to the window's configure-event
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// this allows us to handle client-side decoration-based configurations (such as GTK+ on Wayland) properly
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// also see commitResize() in sizing_unix.go for additional notes
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// thanks to many people in irc.gimp.net/#gtk+ for help (including tristan for suggesting g_signal_connect_after())
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g_signal_connect_after(
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C.gpointer(unsafe.Pointer(layoutw)),
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"size-allocate",
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C.GCallback(C.windowResizing),
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C.gpointer(unsafe.Pointer(w)))
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C.gtk_window_resize(w.window, C.gint(width), C.gint(height))
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C.gtk_container_add(w.wc, layoutw)
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w.child = control
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w.child.setParent(&controlParent{w.layoutc})
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return w
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}
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func (w *window) Title() string {
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return fromgstr(C.gtk_window_get_title(w.window))
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}
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func (w *window) SetTitle(title string) {
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ctitle := togstr(title)
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defer freegstr(ctitle)
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C.gtk_window_set_title(w.window, ctitle)
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}
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func (w *window) Show() {
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C.gtk_widget_show_all(w.widget)
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}
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func (w *window) Hide() {
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C.gtk_widget_hide(w.widget)
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}
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func (w *window) Close() {
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C.gtk_widget_destroy(w.widget)
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}
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func (w *window) OnClosing(e func() bool) {
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w.closing.setbool(e)
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}
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//export windowClosing
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func windowClosing(wid *C.GtkWidget, e *C.GdkEvent, data C.gpointer) C.gboolean {
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w := (*window)(unsafe.Pointer(data))
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close := w.closing.fire()
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if close {
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return C.GDK_EVENT_PROPAGATE // will do gtk_widget_destroy(), which is what we want (thanks ebassi in irc.gimp.net/#gtk+)
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}
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return C.GDK_EVENT_STOP // keeps window alive
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}
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//export windowResizing
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func windowResizing(wid *C.GtkWidget, r *C.GdkRectangle, data C.gpointer) {
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w := (*window)(unsafe.Pointer(data))
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// the origin of the window's content area is always (0, 0)
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w.resize(0, 0, int(r.width), int(r.height))
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fmt.Printf("new size %d x %d\n", r.width, r.height)
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}
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