From 247cdf8d6ff13697dcead9908d97146e0d5171c4 Mon Sep 17 00:00:00 2001
From: Pietro Gagliardi <pietro10@mac.com>
Date: Sun, 26 Aug 2018 17:08:41 -0400
Subject: [PATCH] Migrated colorbutton.go back.

---
 BBB_GOFILES/colorbutton.go => colorbutton.go | 33 ++++----------------
 pkgui.c                                      | 29 +++++++++++++++++
 pkgui.h                                      | 12 +++++++
 3 files changed, 47 insertions(+), 27 deletions(-)
 rename BBB_GOFILES/colorbutton.go => colorbutton.go (61%)

diff --git a/BBB_GOFILES/colorbutton.go b/colorbutton.go
similarity index 61%
rename from BBB_GOFILES/colorbutton.go
rename to colorbutton.go
index 0129a55..6b1f525 100644
--- a/BBB_GOFILES/colorbutton.go
+++ b/colorbutton.go
@@ -6,28 +6,7 @@ import (
 	"unsafe"
 )
 
-// #include <stdlib.h>
-// #include "ui.h"
-// #include "util.h"
-// extern void doColorButtonOnChanged(uiColorButton *, void *);
-// // see golang/go#19835
-// typedef void (*colorButtonCallback)(uiColorButton *, void *);
-// typedef struct pkguiCColor pkguiCColor;
-// struct pkguiCColor { double *r; double *g; double *b; double *a; };
-// static inline pkguiCColor pkguiNewCColor(void)
-// {
-// 	pkguiCColor c;
-// 
-// 	c.r = (double *) pkguiAlloc(4 * sizeof (double));
-// 	c.g = c.r + 1;
-// 	c.b = c.g + 1;
-// 	c.a = c.b + 1;
-// 	return c;
-// }
-// static inline void pkguiFreeCColor(pkguiCColor c)
-// {
-// 	free(c.r);
-// }
+// #include "pkgui.h"
 import "C"
 
 // ColorButton is a Control that represents a button that the user can
@@ -44,7 +23,7 @@ func NewColorButton() *ColorButton {
 
 	b.b = C.uiNewColorButton()
 
-	C.uiColorButtonOnChanged(b.b, C.colorButtonCallback(C.doColorButtonOnChanged), nil)
+	C.pkguiColorButtonOnChanged(b.b)
 
 	b.ControlBase = NewControlBase(b, uintptr(unsafe.Pointer(b.b)))
 	return b
@@ -54,8 +33,8 @@ func NewColorButton() *ColorButton {
 // Colors are not alpha-premultiplied.
 // TODO rename b or bl
 func (b *ColorButton) Color() (r, g, bl, a float64) {
-	c := C.pkguiNewCColor()
-	defer C.pkguiFreeCColor(c)
+	c := C.pkguiNewColorDoubles()
+	defer C.pkguiFreeColorDoubles(c)
 	C.uiColorButtonColor(b.b, c.r, c.g, c.b, c.a)
 	return float64(*(c.r)), float64(*(c.g)), float64(*(c.b)), float64(*(c.a))
 }
@@ -74,8 +53,8 @@ func (b *ColorButton) OnChanged(f func(*ColorButton)) {
 	b.onChanged = f
 }
 
-//export doColorButtonOnChanged
-func doColorButtonOnChanged(bb *C.uiColorButton, data unsafe.Pointer) {
+//export pkguiDoColorButtonOnChanged
+func pkguiDoColorButtonOnChanged(bb *C.uiColorButton, data unsafe.Pointer) {
 	b := ControlFromLibui(uintptr(unsafe.Pointer(bb))).(*ColorButton)
 	if b.onChanged != nil {
 		b.onChanged(b)
diff --git a/pkgui.c b/pkgui.c
index f0d19be..5d0d55d 100644
--- a/pkgui.c
+++ b/pkgui.c
@@ -37,6 +37,35 @@ void pkguiCheckboxOnToggled(uiCheckbox *c)
 	uiCheckboxOnToggled(c, pkguiDoCheckboxOnToggled, NULL);
 }
 
+void pkguiColorButtonOnChanged(uiColorButton *c)
+{
+	uiColorButtonOnChanged(c, pkguiDoColorButtonOnChanged, NULL);
+}
+
+typedef struct pkguiColorDoubles pkguiColorDoubles;
+struct pkguiColorDoubles {
+	double *r;
+	double *g;
+	double *b;
+	double *a;
+};
+
+pkguiColorDoubles pkguiAllocColorDoubles(void)
+{
+	pkguiColorDoubles c;
+
+	c.r = (double *) pkguiAlloc(4 * sizeof (double));
+	c.g = c.r + 1;
+	c.b = c.g + 1;
+	c.a = c.b + 1;
+	return c;
+}
+
+void pkguiFreeColorDoubles(pkguiColorDoubles c)
+{
+	free(c.r);
+}
+
 void pkguiComboboxOnSelected(uiCombobox *c)
 {
 	uiComboboxOnSelected(c, pkguiDoComboboxOnSelected, NULL);
diff --git a/pkgui.h b/pkgui.h
index d7cd5b2..d421965 100644
--- a/pkgui.h
+++ b/pkgui.h
@@ -22,6 +22,18 @@ extern void pkguiButtonOnClicked(uiButton *b);
 // checkbox.go
 extern void pkguiCheckboxOnToggled(uiCheckbox *c);
 
+// colorbutton.go
+extern void pkguiColorButtonOnChanged(uiColorButton *c);
+typedef struct pkguiColorDoubles pkguiColorDoubles;
+struct pkguiColorDoubles {
+	double *r;
+	double *g;
+	double *b;
+	double *a;
+};
+extern pkguiColorDoubles pkguiAllocColorDoubles(void);
+extern void pkguiFreeColorDoubles(pkguiColorDoubles c);
+
 // combobox.go
 extern void pkguiComboboxOnSelected(uiCombobox *c);