From a581acf3fd725adc83de3e035e0115c02682965e Mon Sep 17 00:00:00 2001
From: pierre <pierre.curto@gmail.com>
Date: Sun, 7 Feb 2021 20:48:30 +0100
Subject: [PATCH] io/pointer: added the grab cursor

Signed-off-by: pierre <pierre.curto@gmail.com>
---
 app/internal/window/os_darwin.go  |  2 ++
 app/internal/window/os_macos.m    |  3 +++
 app/internal/window/os_wayland.go |  2 ++
 app/internal/window/os_windows.go |  2 ++
 app/internal/window/os_x11.go     |  5 ++++-
 app/internal/windows/windows.go   | 13 +++++++------
 io/pointer/pointer.go             |  2 ++
 7 files changed, 22 insertions(+), 7 deletions(-)

diff --git a/app/internal/window/os_darwin.go b/app/internal/window/os_darwin.go
index 0c6b3555..a8472bbe 100644
--- a/app/internal/window/os_darwin.go
+++ b/app/internal/window/os_darwin.go
@@ -198,6 +198,8 @@ func windowSetCursor(from, to pointer.CursorName) pointer.CursorName {
 		curID = 5
 	case pointer.CursorRowResize:
 		curID = 6
+	case pointer.CursorGrab:
+		curID = 7
 	case pointer.CursorNone:
 		runOnMain(func() {
 			C.gio_hideCursor()
diff --git a/app/internal/window/os_macos.m b/app/internal/window/os_macos.m
index 2fefb14d..fa5a98e0 100644
--- a/app/internal/window/os_macos.m
+++ b/app/internal/window/os_macos.m
@@ -119,6 +119,9 @@ void gio_setCursor(NSUInteger curID) {
 			case 6:
 				[NSCursor.resizeUpDownCursor set];
 				break;
+			case 7:
+                [NSCursor.openHandCursor set];
+                break;
 			default:
 				[NSCursor.arrowCursor set];
 				break;
diff --git a/app/internal/window/os_wayland.go b/app/internal/window/os_wayland.go
index 535cf0cf..cee2128c 100644
--- a/app/internal/window/os_wayland.go
+++ b/app/internal/window/os_wayland.go
@@ -930,6 +930,8 @@ func (w *window) SetCursor(name pointer.CursorName) {
 		name = "top_side"
 	case pointer.CursorColResize:
 		name = "left_side"
+	case pointer.CursorGrab:
+		name = "hand1"
 	}
 	cname := C.CString(string(name))
 	defer C.free(unsafe.Pointer(cname))
diff --git a/app/internal/window/os_windows.go b/app/internal/window/os_windows.go
index 2d0a9dad..559134ad 100644
--- a/app/internal/window/os_windows.go
+++ b/app/internal/window/os_windows.go
@@ -606,6 +606,8 @@ func loadCursor(name pointer.CursorName) (syscall.Handle, error) {
 		curID = windows.IDC_SIZEWE
 	case pointer.CursorRowResize:
 		curID = windows.IDC_SIZENS
+	case pointer.CursorGrab:
+		curID = windows.IDC_SIZEALL
 	case pointer.CursorNone:
 		return 0, nil
 	}
diff --git a/app/internal/window/os_x11.go b/app/internal/window/os_x11.go
index ab44ca8d..367edd96 100644
--- a/app/internal/window/os_x11.go
+++ b/app/internal/window/os_x11.go
@@ -118,10 +118,13 @@ func (w *x11Window) WriteClipboard(s string) {
 }
 
 func (w *x11Window) SetCursor(name pointer.CursorName) {
-	if name == pointer.CursorNone {
+	switch name {
+	case pointer.CursorNone:
 		w.cursor = name
 		C.XFixesHideCursor(w.x, w.xw)
 		return
+	case pointer.CursorGrab:
+		name = "hand1"
 	}
 	if w.cursor == pointer.CursorNone {
 		C.XFixesShowCursor(w.x, w.xw)
diff --git a/app/internal/windows/windows.go b/app/internal/windows/windows.go
index c8846e54..17ce6bb1 100644
--- a/app/internal/windows/windows.go
+++ b/app/internal/windows/windows.go
@@ -65,12 +65,13 @@ const (
 
 	HTCLIENT = 1
 
-	IDC_ARROW  = 32512
-	IDC_IBEAM  = 32513
-	IDC_HAND   = 32649
-	IDC_CROSS  = 32515
-	IDC_SIZENS = 32645
-	IDC_SIZEWE = 32644
+	IDC_ARROW   = 32512
+	IDC_IBEAM   = 32513
+	IDC_HAND    = 32649
+	IDC_CROSS   = 32515
+	IDC_SIZENS  = 32645
+	IDC_SIZEWE  = 32644
+	IDC_SIZEALL = 32646
 
 	INFINITE = 0xFFFFFFFF
 
diff --git a/io/pointer/pointer.go b/io/pointer/pointer.go
index b112bfde..3b4326f6 100644
--- a/io/pointer/pointer.go
+++ b/io/pointer/pointer.go
@@ -103,6 +103,8 @@ const (
 	CursorColResize CursorName = "col-resize"
 	// CursorRowResize is the cursor for horizontal resize.
 	CursorRowResize CursorName = "row-resize"
+	// CursorGrab is the cursor for moving object in any direction.
+	CursorGrab CursorName = "grab"
 	// CursorNone hides the cursor. To show it again, use any other cursor.
 	CursorNone CursorName = "none"
 )