From e6929834c7f41b172b63795bd76cddb6295b7ca5 Mon Sep 17 00:00:00 2001
From: Manolo Gouy <Manolo>
Date: Sat, 5 May 2018 17:35:09 +0000
Subject: Fix Fl_Screen_Driver::traverse_to_gl_subwindows() to support
 Fl_Widget_Surface::print_window_part().

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12900 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
---
 src/Fl_Screen_Driver.cxx | 20 ++++++--------------
 1 file changed, 6 insertions(+), 14 deletions(-)

(limited to 'src')

diff --git a/src/Fl_Screen_Driver.cxx b/src/Fl_Screen_Driver.cxx
index 0f5008e32..d926c02ff 100644
--- a/src/Fl_Screen_Driver.cxx
+++ b/src/Fl_Screen_Driver.cxx
@@ -191,7 +191,7 @@ Fl_RGB_Image *Fl_Screen_Driver::traverse_to_gl_subwindows(Fl_Group *g, int x, in
     if (!pi) return full_img;
     full_img = pi->rectangle_capture(g, x, y, w, h);
   }
-  else if ( g->as_window()/* && (!full_img || (g->window() && g->window()->as_gl_window()))*/ ) {
+  else if ( g->as_window() ) {
     if (full_img) g->as_window()->make_current();
     full_img = Fl::screen_driver()->read_win_rectangle(x, y, w, h);
   }
@@ -205,23 +205,15 @@ Fl_RGB_Image *Fl_Screen_Driver::traverse_to_gl_subwindows(Fl_Group *g, int x, in
       if (x < c->x()) origin_x = c->x();
       int origin_y = y;
       if (y < c->y()) origin_y = c->y();
-      int width = c->w();
-      if (origin_x + width > c->x() + c->w()) width = c->x() + c->w() - origin_x;
-      if (origin_x + width > x + w) width = x + w - origin_x;
-      int height = c->w();
-      if (origin_y + height > c->y() + c->h()) height = c->y() + c->h() - origin_y;
-      if (origin_y + height > y + h) height = y + h - origin_y;
+      int maxi = x + w; if (maxi > c->x() + c->w()) maxi = c->x() + c->w();
+      int width = maxi - origin_x;
+      maxi = y + h; if (maxi > c->y() + c->h()) maxi = c->y() + c->h();
+      int height = maxi - origin_y;
       if (width > 0 && height > 0) {
         Fl_RGB_Image *img = traverse_to_gl_subwindows(c->as_window(),  origin_x - c->x(),
                                                       origin_y - c->y(), width, height, full_img);
         if (img == full_img) continue;
-        int top;
-        //if (c->as_gl_window()) {
-          top = origin_y - y;
-        /*} else {
-          top = full_img->h() - (origin_y - y + img->h());
-        }*/
-       write_image_inside(full_img, img, (origin_x - x) * full_img_scale, top * full_img_scale);
+        write_image_inside(full_img, img, (origin_x - x) * full_img_scale, (origin_y - y) * full_img_scale);
         delete img;
       }
     }
-- 
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