Add menu item for resetting the video pan

src/command/video.cpp

@@ -603,6 +603,17 @@ struct video_opt_autoscroll final : public Command {
 	}
 };
 
+struct video_pan_reset final : public validator_video_loaded {
+	CMD_NAME("video/pan_reset")
+	STR_MENU("Reset video pan")
+	STR_DISP("Reset video pan")
+	STR_HELP("Reset the video pan to the original value")
+
+	void operator()(agi::Context *c) override {
+		c->videoDisplay->ResetPan();
+	}
+};
+
 struct video_play final : public validator_video_loaded {
 	CMD_NAME("video/play")
 	CMD_ICON(button_play)
@@ -767,6 +778,7 @@ namespace cmd {
 		reg(agi::make_unique<video_open>());
 		reg(agi::make_unique<video_open_dummy>());
 		reg(agi::make_unique<video_opt_autoscroll>());
+		reg(agi::make_unique<video_pan_reset>());
 		reg(agi::make_unique<video_play>());
 		reg(agi::make_unique<video_play_line>());
 		reg(agi::make_unique<video_show_overscan>());

src/libresrc/default_menu.json

@@ -156,6 +156,7 @@
         { "submenu" : "main/video/set zoom", "text" : "Set &Zoom" },
         { "submenu" : "main/video/override ar", "text" : "Override &AR" },
         { "command" : "video/show_overscan" },
+		{ "command" : "video/pan_reset" },
         {},
         { "command" : "video/jump" },
         { "command" : "video/jump/start" },

src/video_display.cpp

@@ -398,6 +398,11 @@ void VideoDisplay::OnKeyDown(wxKeyEvent &event) {
 	hotkey::check("Video", con, event);
 }
 
+void VideoDisplay::ResetPan() {
+	pan_x = pan_y = 0;
+	PositionVideo();
+}
+
 void VideoDisplay::SetZoom(double value) {
 	if (value == 0) return;
 	zoomValue = std::max(value, .125);

src/video_display.h

@@ -169,6 +169,9 @@ public:
 	/// @brief Get the current zoom level
 	double GetZoom() const { return zoomValue; }
 
+	/// @brief Reset the video pan
+	void ResetPan();
+
 	/// Get the last seen position of the mouse in script coordinates
 	Vector2D GetMousePosition() const;