From 8429c33b548c1493b81793e5568b53dcd29ecb7c Mon Sep 17 00:00:00 2001
From: Good Guy <good1.2guy@gmail.com>
Date: Sun, 9 Sep 2018 13:53:03 -0600
Subject: [PATCH] add input focus, negate dx,dy for camera drag motion

---
 cinelerra-5.1/cinelerra/canvas.C     | 87 ++++------------------------
 cinelerra-5.1/cinelerra/cwindowgui.C |  9 ++-
 cinelerra-5.1/guicast/bcwindowbase.C |  7 ++-
 cinelerra-5.1/guicast/bcwindowbase.h |  1 +
 4 files changed, 26 insertions(+), 78 deletions(-)

diff --git a/cinelerra-5.1/cinelerra/canvas.C b/cinelerra-5.1/cinelerra/canvas.C
index 3e7ee0be..2a478d41 100644
--- a/cinelerra-5.1/cinelerra/canvas.C
+++ b/cinelerra-5.1/cinelerra/canvas.C
@@ -773,6 +773,10 @@ void Canvas::create_canvas()
 
 	if(video_on) get_canvas()->start_video();
 
+	get_canvas()->lock_window("Canvas::create_canvas 2");
+	get_canvas()->focus();
+	get_canvas()->unlock_window();
+
 	unlock_canvas();
 }
 
@@ -928,26 +932,8 @@ int CanvasOutput::keypress_event()
 
 
 
-
-
-
-
-
-
-
-
-
-
-CanvasFullScreen::CanvasFullScreen(Canvas *canvas,
-    int w,
-    int h)
- : BC_FullScreen(canvas->subwindow,
- 	w,
-	h,
-	BLACK,
-	0,
-	0,
-	0)
+CanvasFullScreen::CanvasFullScreen(Canvas *canvas, int w, int h)
+ : BC_FullScreen(canvas->subwindow, w, h, BLACK, 0, 0, 0)
 {
 	this->canvas = canvas;
 }
@@ -957,32 +943,9 @@ CanvasFullScreen::~CanvasFullScreen()
 }
 
 
-
-
-
-
-
-
-
-
-
-
-
-CanvasXScroll::CanvasXScroll(EDL *edl,
-	Canvas *canvas,
-    int x,
-    int y,
-	int length,
-	int position,
-	int handle_length,
-    int pixels)
- : BC_ScrollBar(x,
-		y,
-		SCROLL_HORIZ,
-		pixels,
-		length,
-		position,
-		handle_length)
+CanvasXScroll::CanvasXScroll(EDL *edl, Canvas *canvas, int x, int y,
+	int length, int position, int handle_length, int pixels)
+ : BC_ScrollBar(x, y, SCROLL_HORIZ, pixels, length, position, handle_length)
 {
 	this->canvas = canvas;
 }
@@ -1000,25 +963,9 @@ int CanvasXScroll::handle_event()
 }
 
 
-
-
-
-
-CanvasYScroll::CanvasYScroll(EDL *edl,
-	Canvas *canvas,
-    int x,
-    int y,
-	int length,
-	int position,
-	int handle_length,
-    int pixels)
- : BC_ScrollBar(x,
-		y,
-		SCROLL_VERT,
-		pixels,
-		length,
-		position,
-		handle_length)
+CanvasYScroll::CanvasYScroll(EDL *edl, Canvas *canvas, int x, int y,
+	int length, int position, int handle_length, int pixels)
+ : BC_ScrollBar(x, y, SCROLL_VERT, pixels, length, position, handle_length)
 {
 	this->canvas = canvas;
 }
@@ -1036,10 +983,6 @@ int CanvasYScroll::handle_event()
 }
 
 
-
-
-
-
 CanvasFullScreenPopup::CanvasFullScreenPopup(Canvas *canvas)
  : BC_PopupMenu(0, 0, 0, "", 0)
 {
@@ -1074,12 +1017,6 @@ int CanvasSubWindowItem::handle_event()
 }
 
 
-
-
-
-
-
-
 CanvasPopup::CanvasPopup(Canvas *canvas)
  : BC_PopupMenu(0, 0, 0, "", 0)
 {
diff --git a/cinelerra-5.1/cinelerra/cwindowgui.C b/cinelerra-5.1/cinelerra/cwindowgui.C
index 3b1d0ac8..3e980b8b 100644
--- a/cinelerra-5.1/cinelerra/cwindowgui.C
+++ b/cinelerra-5.1/cinelerra/cwindowgui.C
@@ -2987,8 +2987,13 @@ int CWindowCanvas::test_bezier(int button_press,
 			{
 				last_center_x = gui->affected_x->get_value();
 				last_center_y = gui->affected_y->get_value();
-				float x = gui->center_x + cursor_x - gui->x_origin;
-				float y = gui->center_y + cursor_y - gui->y_origin;
+				float dx = cursor_x - gui->x_origin;
+				float dy = cursor_y - gui->y_origin;
+				if(gui->current_operation == CWINDOW_CAMERA ) {
+					dx = -dx;  dy = -dy;
+				}
+				float x = gui->center_x + dx;
+				float y = gui->center_y + dy;
 				gui->affected_x->set_value(x);
 				gui->affected_y->set_value(y);
 				if( !EQUIV(last_center_x, x) || !EQUIV(last_center_y, y) )
diff --git a/cinelerra-5.1/guicast/bcwindowbase.C b/cinelerra-5.1/guicast/bcwindowbase.C
index 7de7c15d..724a44f7 100644
--- a/cinelerra-5.1/guicast/bcwindowbase.C
+++ b/cinelerra-5.1/guicast/bcwindowbase.C
@@ -1357,7 +1357,7 @@ locking_message = event->xclient.message_type;
 				cursor_entered = 1;
 			}
 			if( cursor_entered )
-				XSetInputFocus(display, win, RevertToParent, CurrentTime);
+				focus();
 		}
 		event_win = event->xany.window;
 		cursor_x = event->xcrossing.x;
@@ -4577,3 +4577,8 @@ void BC_WindowBase::flicker(int n, int ms)
 	set_opaque();
 }
 
+void BC_WindowBase::focus()
+{
+	XSetInputFocus(top_level->display, top_level->win, RevertToParent, CurrentTime);
+}
+
diff --git a/cinelerra-5.1/guicast/bcwindowbase.h b/cinelerra-5.1/guicast/bcwindowbase.h
index 336b9693..ca73b39e 100644
--- a/cinelerra-5.1/guicast/bcwindowbase.h
+++ b/cinelerra-5.1/guicast/bcwindowbase.h
@@ -497,6 +497,7 @@ public:
 	void slide_up(int distance);
 	void slide_down(int distance);
 	void flicker(int n=3, int ms=66);
+	void focus();
 
 	int cycle_textboxes(int amount);
 
-- 
2.26.2