From c75c10d2385aaa1bbf7d8f5ae437ccd5d1e3803f Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Sun, 27 Oct 2019 13:18:57 +0100
Subject: Expose functional stub backend

---
 pugl/detail/mac.m | 15 +++++++++++++++
 pugl/detail/win.c | 38 ++++++++++++++++++++++++++++++++++++++
 pugl/detail/x11.c | 15 +++++++++++++++
 3 files changed, 68 insertions(+)

(limited to 'pugl/detail')

diff --git a/pugl/detail/mac.m b/pugl/detail/mac.m
index c9847eb..e8a5d57 100644
--- a/pugl/detail/mac.m
+++ b/pugl/detail/mac.m
@@ -24,6 +24,7 @@
 #include "pugl/detail/implementation.h"
 #include "pugl/detail/mac.h"
 #include "pugl/pugl.h"
+#include "pugl/pugl_stub_backend.h"
 
 #import <Cocoa/Cocoa.h>
 
@@ -1071,3 +1072,17 @@ puglSetClipboard(PuglView* const   view,
 
 	return PUGL_SUCCESS;
 }
+
+const PuglBackend*
+puglStubBackend(void)
+{
+	static const PuglBackend backend = {puglStubConfigure,
+	                                    puglStubCreate,
+	                                    puglStubDestroy,
+	                                    puglStubEnter,
+	                                    puglStubLeave,
+	                                    puglStubResize,
+	                                    puglStubGetContext};
+
+	return &backend;
+}
diff --git a/pugl/detail/win.c b/pugl/detail/win.c
index 408e7ba..b9004b2 100644
--- a/pugl/detail/win.c
+++ b/pugl/detail/win.c
@@ -21,6 +21,7 @@
 #include "pugl/detail/implementation.h"
 #include "pugl/detail/win.h"
 #include "pugl/pugl.h"
+#include "pugl/pugl_stub_backend.h"
 
 #include <windows.h>
 #include <windowsx.h>
@@ -927,3 +928,40 @@ puglSetClipboard(PuglView* const   view,
 	CloseClipboard();
 	return PUGL_SUCCESS;
 }
+
+static PuglStatus
+puglWinStubEnter(PuglView* view, bool drawing)
+{
+	if (drawing) {
+		PAINTSTRUCT ps;
+		BeginPaint(view->impl->hwnd, &ps);
+	}
+
+	return PUGL_SUCCESS;
+}
+
+static PuglStatus
+puglWinStubLeave(PuglView* view, bool drawing)
+{
+	if (drawing) {
+		PAINTSTRUCT ps;
+		EndPaint(view->impl->hwnd, &ps);
+		SwapBuffers(view->impl->hdc);
+	}
+
+	return PUGL_SUCCESS;
+}
+
+const PuglBackend*
+puglStubBackend(void)
+{
+	static const PuglBackend backend = {puglWinStubConfigure,
+	                                    puglStubCreate,
+	                                    puglStubDestroy,
+	                                    puglWinStubEnter,
+	                                    puglWinStubLeave,
+	                                    puglStubResize,
+	                                    puglStubGetContext};
+
+	return &backend;
+}
diff --git a/pugl/detail/x11.c b/pugl/detail/x11.c
index 7bf5223..fd47db3 100644
--- a/pugl/detail/x11.c
+++ b/pugl/detail/x11.c
@@ -26,6 +26,7 @@
 #include "pugl/detail/types.h"
 #include "pugl/detail/x11.h"
 #include "pugl/pugl.h"
+#include "pugl/pugl_stub_backend.h"
 
 #include <X11/X.h>
 #include <X11/Xatom.h>
@@ -908,3 +909,17 @@ puglSetClipboard(PuglView* const   view,
 	XSetSelectionOwner(impl->display, atoms->CLIPBOARD, impl->win, CurrentTime);
 	return PUGL_SUCCESS;
 }
+
+const PuglBackend*
+puglStubBackend(void)
+{
+	static const PuglBackend backend = {puglX11StubConfigure,
+	                                    puglStubCreate,
+	                                    puglStubDestroy,
+	                                    puglStubEnter,
+	                                    puglStubLeave,
+	                                    puglStubResize,
+	                                    puglStubGetContext};
+
+	return &backend;
+}
-- 
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