window moving and focusing

1 files changed, 17 insertions, 3 deletions

diff --git a/applications/goldman/source/renderer.hpp b/applications/goldman/source/renderer.hpp
index 91afe88..c2e82b2 100644
--- a/applications/goldman/source/renderer.hpp
+++ b/applications/goldman/source/renderer.hpp
@@ -17,9 +17,6 @@ class renderer {
   int cursor_x;
   int cursor_y;
 
-  //bottom to top
-  std::list<window *> windows;
-
   std::mutex mut;
 
   euler::syscall::stream_handle
@@ -28,6 +25,12 @@ class renderer {
   void do_render();
 
 public:
+  //all of the shown windows, sorted from furthest back to furthest front.
+  //while the renderer is not locked, the contents of this can change and
+  //iterators can be invalided. this should not be reordered, added to, or
+  //have elements removed from outside the renderer.
+  std::list<window *> windows;
+
   renderer(
     daguerre::image<daguerre::hilbert_color> &&framebuffer,
     daguerre::image<daguerre::hilbert_color> &&background,
@@ -53,8 +56,19 @@ public:
     euler::syscall::write_to_stream(dispatcher_handle_1, 1, &byte);
   }
 
+  //gets the current position of the cursor. this should
+  //only be called while the renderer is locked.
+  void get_cursor(int &x_out, int &y_out);
+
+  //this adds x_offset and y_offset to the current cursor position, and then
+  //clamps the cursor position to have its top-left pixel inside the frame.
+  //this should only be called while the renderer is locked.
   void bump_cursor(int x_offset, int y_offset);
 
+  //moves the pointed to window to the front of the window stack.
+  //this should only be called while the renderer is locked.
+  void move_window_to_front(std::list<window *>::iterator w);
+
   void    add_window(window *w);
   void remove_window(window *w);