Don't open a second reprojection window

git-svn-id: svn://cook.msm.cam.ac.uk:745/diff-tomo/dtr@163 bf6ca9ba-c028-0410-8290-897cf20841d1

1 files changed, 12 insertions, 0 deletions

diff --git a/src/reproject.c b/src/reproject.c
index 79657a1..2c84326 100644
--- a/src/reproject.c
+++ b/src/reproject.c
@@ -201,11 +201,21 @@ static gint reproject_clicked(GtkWidget *widget, GdkEventButton *event, ControlC
 
 }
 
+static gint reproject_closed(GtkWidget *widget, ControlContext *ctx) {
+	ctx->reproject_id = NULL;
+	return 0;
+}
+
 void reproject_open(ControlContext *ctx) {
 	
 	size_t j;
 	ImageFeatureList *flist;
 	
+	if ( ctx->reproject_id ) {
+		displaywindow_error("Reprojection window is already open.", ctx->dw);
+		return;
+	}
+	
 	if ( !ctx->cell ) {
 		printf("RP: No current cell\n");
 		displaywindow_error("No reciprocal unit cell has been specified.", ctx->dw);
@@ -224,6 +234,8 @@ void reproject_open(ControlContext *ctx) {
 	ctx->reproject_id = imagedisplay_open_with_message(ctx->images->images[ctx->reproject_cur_image], "Current Image", "Click to change image",
 				IMAGEDISPLAY_SHOW_CENTRE | IMAGEDISPLAY_SHOW_TILT_AXIS, G_CALLBACK(reproject_clicked), ctx);
 	
+	g_signal_connect(GTK_OBJECT(ctx->reproject_id->drawingarea), "destroy", G_CALLBACK(reproject_closed), ctx);
+	
 	flist = reproject_get_reflections(&ctx->images->images[ctx->reproject_cur_image], ctx->cell_lattice, ctx);
 	for ( j=0; j<flist->n_features; j++ ) {
 		imagedisplay_mark_circle(ctx->reproject_id, flist->features[j].x, flist->features[j].y);