From 4b2858b53a32461b630fddbf3fd77884a2b4a5d9 Mon Sep 17 00:00:00 2001
From: Pietro Gagliardi <pietro10@mac.com>
Date: Wed, 8 Jun 2016 18:19:41 -0400
Subject: [PATCH] Implemented uiForm on GTK+.

---
 unix/CMakeLists.txt |   1 +
 unix/form.c         | 132 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 133 insertions(+)
 create mode 100644 unix/form.c

diff --git a/unix/CMakeLists.txt b/unix/CMakeLists.txt
index d8626062..42903125 100644
--- a/unix/CMakeLists.txt
+++ b/unix/CMakeLists.txt
@@ -22,6 +22,7 @@ list(APPEND _LIBUI_SOURCES
 	unix/editablecombo.c
 	unix/entry.c
 	unix/fontbutton.c
+	unix/form.c
 	unix/graphemes.c
 	unix/group.c
 	unix/label.c
diff --git a/unix/form.c b/unix/form.c
new file mode 100644
index 00000000..03acd23a
--- /dev/null
+++ b/unix/form.c
@@ -0,0 +1,132 @@
+// 8 june 2016
+#include "uipriv_unix.h"
+
+struct formChild {
+	uiControl *c;
+	GtkWidget *label;
+	gboolean oldhexpand;
+	GtkAlign oldhalign;
+	gboolean oldvexpand;
+	GtkAlign oldvalign;
+};
+
+struct uiForm {
+	uiUnixControl c;
+	GtkWidget *widget;
+	GtkContainer *container;
+	GtkGrid *grid;
+	GArray *children;
+	int padded;
+	// TODO OS X is missing this
+	GtkSizeGroup *stretchygroup;		// ensures all stretchy controls have the same size
+};
+
+uiUnixControlAllDefaultsExceptDestroy(uiForm)
+
+#define ctrl(f, i) &g_array_index(f->children, struct formChild, i)
+
+static void uiFormDestroy(uiControl *c)
+{
+	uiForm *f = uiForm(c);
+	struct formChild *fc;
+	guint i;
+
+	// kill the size group
+	g_object_unref(f->stretchygroup);
+	// free all controls
+	for (i = 0; i < f->children->len; i++) {
+		fc = ctrl(f, i);
+		uiControlSetParent(fc->c, NULL);
+		// and make sure the widget itself stays alive
+		uiUnixControlSetContainer(uiUnixControl(fc->c), f->container, TRUE);
+		uiControlDestroy(fc->c);
+		gtk_widget_destroy(fc->label);
+	}
+	g_array_free(f->children, TRUE);
+	// and then ourselves
+	g_object_unref(f->widget);
+	uiFreeControl(uiControl(f));
+}
+
+void uiFormAppend(uiForm *f, const char *label, uiControl *c, int stretchy)
+{
+	struct formChild fc;
+	GtkWidget *widget;
+	guint row;
+
+	fc.c = c;
+	widget = GTK_WIDGET(uiControlHandle(fc.c));
+	fc.oldhexpand = gtk_widget_get_hexpand(widget);
+	fc.oldhalign = gtk_widget_get_halign(widget);
+	fc.oldvexpand = gtk_widget_get_vexpand(widget);
+	fc.oldvalign = gtk_widget_get_valign(widget);
+
+	if (stretchy) {
+		gtk_widget_set_vexpand(widget, TRUE);
+		gtk_widget_set_valign(widget, GTK_ALIGN_FILL);
+		gtk_size_group_add_widget(f->stretchygroup, widget);
+	} else
+		gtk_widget_set_vexpand(widget, FALSE);
+	// and make them fill horizontally
+	gtk_widget_set_hexpand(widget, TRUE);
+	gtk_widget_set_halign(widget, GTK_ALIGN_FILL);
+
+	fc.label = gtk_label_new(label);
+	gtk_widget_set_hexpand(fc.label, FALSE);
+	gtk_widget_set_halign(fc.label, GTK_ALIGN_END);
+	gtk_widget_set_vexpand(fc.label, FALSE);
+	if (GTK_IS_SCROLLED_WINDOW(widget))
+		gtk_widget_set_valign(fc.label, GTK_ALIGN_START);
+	else
+		gtk_widget_set_valign(fc.label, GTK_ALIGN_CENTER);
+	gtk_style_context_add_class(gtk_widget_get_style_context(fc.label), "dim-label");
+	row = f->children->len;
+	gtk_grid_attach(f->grid, fc.label,
+		0, row,
+		1, 1);
+	gtk_widget_show_all(fc.label);
+
+	uiControlSetParent(fc.c, uiControl(f));
+	uiUnixControlSetContainer(uiUnixControl(fc.c), f->container, FALSE);
+	g_array_append_val(f->children, fc);
+
+	// move the widget to the correct place
+	gtk_container_child_set(f->container, widget,
+		"left-attach", 1,
+		"top-attach", row,
+		NULL);
+}
+
+int uiFormPadded(uiForm *f)
+{
+	return f->padded;
+}
+
+void uiFormSetPadded(uiForm *f, int padded)
+{
+	f->padded = padded;
+	if (f->padded) {
+		gtk_grid_set_row_spacing(f->grid, gtkYPadding);
+		gtk_grid_set_column_spacing(f->grid, gtkXPadding);
+	} else {
+		gtk_grid_set_row_spacing(f->grid, 0);
+		gtk_grid_set_column_spacing(f->grid, 0);
+	}
+}
+
+uiForm *uiNewForm(void)
+{
+	uiForm *f;
+
+	uiUnixNewControl(uiForm, f);
+
+	f->widget = gtk_grid_new();
+	f->container = GTK_CONTAINER(f->widget);
+	f->grid = GTK_GRID(f->widget);
+
+	f->stretchygroup = gtk_size_group_new(GTK_SIZE_GROUP_VERTICAL);
+
+	f->children = g_array_new(FALSE, TRUE, sizeof (struct formChild));
+
+	return f;
+}