72 lines
1.9 KiB
Go
72 lines
1.9 KiB
Go
// +build !windows,!darwin
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// 25 july 2014
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package ui
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import (
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"unsafe"
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)
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// #include "gtk_unix.h"
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// extern void layoutResizing(GtkWidget *, GdkRectangle *, gpointer);
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import "C"
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type tab struct {
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*widgetbase
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notebook *C.GtkNotebook
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containers []*container
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layoutws []*C.GtkWidget
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layoutcs []*C.GtkContainer
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layouts []*C.GtkLayout
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}
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func newTab() Tab {
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widget := C.gtk_notebook_new()
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t := &tab{
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widgetbase: newWidget(widget),
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notebook: (*C.GtkNotebook)(unsafe.Pointer(widget)),
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}
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// there are no scrolling arrows by default; add them in case there are too many tabs
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C.gtk_notebook_set_scrollable(t.notebook, C.TRUE)
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return t
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}
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func (t *tab) Append(name string, control Control) {
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// TODO isolate and standardize
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layout := C.gtk_layout_new(nil, nil)
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t.layoutws = append(t.layoutws, layout)
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t.layoutcs = append(t.layoutcs, (*C.GtkContainer)(unsafe.Pointer(layout)))
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t.layouts = append(t.layouts, (*C.GtkLayout)(unsafe.Pointer(layout)))
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c := new(container)
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t.containers = append(t.containers, c)
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c.child = control
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c.child.setParent((*C.GtkContainer)(unsafe.Pointer(layout)))
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g_signal_connect_after(
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C.gpointer(unsafe.Pointer(layout)),
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"size-allocate",
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C.GCallback(C.layoutResizing),
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C.gpointer(unsafe.Pointer(c)))
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cname := togstr(name)
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defer freegstr(cname)
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tab := C.gtk_notebook_append_page(t.notebook,
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layout,
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C.gtk_label_new(cname))
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if tab == -1 {
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panic("gtk_notebook_append_page() failed")
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}
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}
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func (t *tab) allocate(x int, y int, width int, height int, d *sizing) []*allocation {
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// only prepared the tabbed control; its children will be reallocated when that one is resized
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return t.widgetbase.allocate(x, y, width, height, d)
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}
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//export layoutResizing
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func layoutResizing(wid *C.GtkWidget, r *C.GdkRectangle, data C.gpointer) {
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c := (*container)(unsafe.Pointer(data))
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// the layout's coordinate system is localized, so the origin is (0, 0)
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c.resize(0, 0, int(r.width), int(r.height))
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}
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