window moving and focusing

1 files changed, 36 insertions, 0 deletions

diff --git a/applications/goldman/source/input.cpp b/applications/goldman/source/input.cpp
index 0cd6922..c71068c 100644
--- a/applications/goldman/source/input.cpp
+++ b/applications/goldman/source/input.cpp
@@ -5,15 +5,51 @@
 
   euler::syscall::set_thread_name("input thread");
 
+  window *window_being_moved = 0;
+  bool was_mouse_down_before = false;
+
   while (true) {
 
     auto result = euler::syscall::get_input_packet();
     if (std::holds_alternative<euler::syscall::mouse_packet>(result)) {
       auto packet = std::get<euler::syscall::mouse_packet>(result);
+
       r->lock();
+
+      int old_x, old_y;
+      r->get_cursor(old_x, old_y);
       r->bump_cursor(packet.x_changed, packet.y_changed);
+      int new_x, new_y;
+      r->get_cursor(new_x, new_y);
+
+      if (window_being_moved != 0) {
+        if (r->windows.size() == 0 || r->windows.back() != window_being_moved)
+          window_being_moved = 0;
+        else {
+          r->windows.back()->x += new_x - old_x;
+          r->windows.back()->y += new_y - old_y;
+          if (!packet.left_button_down)
+            window_being_moved = 0;
+        }
+      }
+
+      else if (packet.left_button_down && !was_mouse_down_before)
+        for (auto it = r->windows.rbegin(); it != r->windows.rend(); ++it)
+          if (new_x >= (*it)->x && new_y >= (*it)->y &&
+              new_x < (*it)->x + (*it)->contents_with_decorations. width &&
+              new_y < (*it)->y + (*it)->contents_with_decorations.height) {
+            r->move_window_to_front(--it.base());
+            //it is now invalidated, but our window is now r->windows.back()
+            if (new_y < r->windows.back()->y + window::title_height)
+              window_being_moved = r->windows.back();
+            break;
+          }
+
       r->unlock();
       r->dispatch_render();
+
+      was_mouse_down_before = packet.left_button_down;
+
     }
 
   }