From 23baffe55ed5964a24f41e719b8f538f1bb04168 Mon Sep 17 00:00:00 2001
From: Pietro Gagliardi <pietro10@mac.com>
Date: Mon, 4 Aug 2014 21:08:18 -0400
Subject: Applied the container change to the GTK+ backend. Woo!

---
 redo/container_unix.go | 82 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 redo/container_unix.go

(limited to 'redo/container_unix.go')

diff --git a/redo/container_unix.go b/redo/container_unix.go
new file mode 100644
index 0000000..964df5a
--- /dev/null
+++ b/redo/container_unix.go
@@ -0,0 +1,82 @@
+// +build !windows,!darwin
+
+// 23 february 2014
+
+package ui
+
+import (
+	"unsafe"
+"fmt"
+)
+
+// #include "gtk_unix.h"
+// extern void containerResizing(GtkWidget *, GdkRectangle *, gpointer);
+import "C"
+
+type container struct {
+	containerbase
+	layoutwidget		*C.GtkWidget
+	layoutcontainer	*C.GtkContainer
+	layout			*C.GtkLayout
+}
+
+func newContainer(child Control) *container {
+	widget := C.gtk_layout_new(nil, nil)
+	c := &container{
+		layoutwidget:		widget,
+		layoutcontainer:	(*C.GtkContainer)(unsafe.Pointer(widget)),
+		layout:			(*C.GtkLayout)(unsafe.Pointer(widget)),
+	}
+	c.child = child
+	c.child.setParent(&controlParent{c.layoutcontainer})
+	// we connect to the layout's size-allocate, not to the window's configure-event
+	// this allows us to handle client-side decoration-based configurations (such as GTK+ on Wayland) properly
+	// also see basecommitResize() in control_unix.go for additional notes
+	// thanks to many people in irc.gimp.net/#gtk+ for help (including tristan for suggesting g_signal_connect_after())
+	g_signal_connect_after(
+		C.gpointer(unsafe.Pointer(c.layout)),
+		"size-allocate",
+		C.GCallback(C.containerResizing),
+		C.gpointer(unsafe.Pointer(c)))
+	return c
+}
+
+//export containerResizing
+func containerResizing(wid *C.GtkWidget, r *C.GdkRectangle, data C.gpointer) {
+	c := (*container)(unsafe.Pointer(data))
+	// the GtkLayout's coordinate system is localized, so the origin is (0, 0)
+	c.resize(0, 0, int(r.width), int(r.height))
+fmt.Printf("new size %d x %d\n", r.width, r.height)
+}
+
+type sizing struct {
+	sizingbase
+
+	// for size calculations
+	// gtk+ needs nothing
+
+	// for the actual resizing
+	shouldVAlignTop	bool
+}
+
+const (
+	gtkXMargin = 12
+	gtkYMargin = 12
+	gtkXPadding = 12
+	gtkYPadding = 6
+)
+
+func (c *container) beginResize() (d *sizing) {
+	d = new(sizing)
+	if spaced {
+		d.xmargin = gtkXMargin
+		d.ymargin = gtkYMargin
+		d.xpadding = gtkXPadding
+		d.ypadding = gtkYPadding
+	}
+	return d
+}
+
+func (c *container) translateAllocationCoords(allocations []*allocation, winwidth, winheight int) {
+	// no need for coordinate conversion with gtk+
+}
-- 
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