6 files changed, 114 insertions, 13 deletions
diff --git a/applications/goldman/makefile b/applications/goldman/makefile
index c6de0e7..0d07717 100644
--- a/applications/goldman/makefile
+++ b/applications/goldman/makefile
@@ -1,5 +1,5 @@
 SOURCES = \
-  main.cpp renderer.cpp input.cpp socket.cpp
+  main.cpp renderer.cpp input.cpp socket.cpp window.cpp
 
 build/%.cpp.o: source/%.cpp
 	@mkdir -p $(@D)
diff --git a/applications/goldman/source/renderer.cpp b/applications/goldman/source/renderer.cpp
index 629c375..7a5e6b5 100644
--- a/applications/goldman/source/renderer.cpp
+++ b/applications/goldman/source/renderer.cpp
@@ -52,9 +52,11 @@ void renderer::do_render() {
   for (auto it = windows.begin(); it != windows.end(); ++it)
 
     double_buffer.copy_from(
-      (*it)->contents, (*it)->x, (*it)->y, 0, 0,
-      std::min((*it)->contents.width, double_buffer.width - (*it)->x),
-      std::min((*it)->contents.height, double_buffer.height - (*it)->y));
+      (*it)->contents_with_decorations, (*it)->x, (*it)->y, 0, 0,
+      std::min((*it)->contents_with_decorations.width,
+               double_buffer.width - (*it)->x),
+      std::min((*it)->contents_with_decorations.height,
+               double_buffer.height - (*it)->y));
 
   double_buffer.convert_from(
     cursor_background, cursor, cursor_x, cursor_y, 0, 0,
@@ -93,10 +95,15 @@ void renderer::bump_cursor(int x_offset, int y_offset) {
 
 }
 
-void renderer::add_window(const window *w) {
+void renderer::add_window(window *w) {
+  if (windows.size() != 0)
+    windows.back()->draw_decorations(false);
+  w->draw_decorations(true);
   windows.push_back(w);
 }
 
-void renderer::remove_window(const window *w) {
+void renderer::remove_window(window *w) {
   windows.remove(w);
+  if (windows.size() != 0)
+    windows.back()->draw_decorations(true);
 }
diff --git a/applications/goldman/source/renderer.hpp b/applications/goldman/source/renderer.hpp
index 14a5964..91afe88 100644
--- a/applications/goldman/source/renderer.hpp
+++ b/applications/goldman/source/renderer.hpp
@@ -18,7 +18,7 @@ class renderer {
   int cursor_y;
 
   //bottom to top
-  std::list<const window *> windows;
+  std::list<window *> windows;
 
   std::mutex mut;
 
@@ -55,7 +55,11 @@ public:
 
   void bump_cursor(int x_offset, int y_offset);
 
-  void add_window(const window *w);
-  void remove_window(const window *w);
+  void    add_window(window *w);
+  void remove_window(window *w);
+
+  inline bool is_top(window *w) {
+    return windows.size() != 0 && w == windows.back();
+  }
 
 };
diff --git a/applications/goldman/source/socket.cpp b/applications/goldman/source/socket.cpp
index 9ebd644..aa9b85e 100644
--- a/applications/goldman/source/socket.cpp
+++ b/applications/goldman/source/socket.cpp
@@ -43,12 +43,13 @@ struct socket_state {
         euler::syscall::stream_result::success)
       return false;
 
-    if (packet.width > __INT_MAX__ || packet.height > __INT_MAX__)
+    if (packet. width > __INT_MAX__ - window::decorations_extra_width ||
+        packet.height > __INT_MAX__ - window::decorations_extra_height)
       return false;
 
     r->lock();
-    w->contents = daguerre::image<daguerre::hilbert_color>(
-      packet.width, packet.height);
+    w->set_size(packet.width, packet.height);
+    w->draw_decorations(r->is_top(w));
     r->unlock();
     return true;
 
@@ -69,6 +70,7 @@ struct socket_state {
 
     r->lock();
     w->title = std::move(title);
+    w->draw_decorations(r->is_top(w));
     r->unlock();
     r->dispatch_render();
     return true;
diff --git a/applications/goldman/source/window.cpp b/applications/goldman/source/window.cpp
new file mode 100644
index 0000000..fe5212a
--- /dev/null
+++ b/applications/goldman/source/window.cpp
@@ -0,0 +1,78 @@
+#include <daguerre/psf.hpp>
+#include "renderer.hpp"
+#include "window.hpp"
+#include <cassert>
+
+//TODO: make these statically intialized once that is implemented
+bool have_initialized_decoration_stuff;
+daguerre::fixed_font<bool> *title_font;
+daguerre::hilbert_color border_color_top;
+daguerre::hilbert_color border_color_not_top;
+daguerre::hilbert_color title_color;
+
+void window::set_size(int width, int height) {
+  contents_with_decorations =
+    daguerre::image<daguerre::hilbert_color>(width + 4, height + 18);
+  contents = daguerre::image<daguerre::hilbert_color>(
+    width, height,
+    &contents_with_decorations.at(2, 16),
+    contents_with_decorations.buffer_pitch, false);
+}
+
+void title_converter(
+  daguerre::hilbert_color &out, const bool &in, const bool &top) {
+  out = in ? title_color : top ? border_color_top : border_color_not_top;
+}
+
+void window::draw_decorations(bool top) {
+
+  //TODO: handle error loading font.
+  //see also comment on title_font declaration.
+  if (!have_initialized_decoration_stuff) {
+    title_font = new daguerre::fixed_font<bool>(
+      *daguerre::try_load_psf("/assets/terminus/6x12.psf"));
+    assert(title_font->glyph_height == 12);
+    border_color_top     = euler::syscall::encode_color(0x00, 0x3f, 0xff);
+    border_color_not_top = euler::syscall::encode_color(0x22, 0x22, 0x22);
+    title_color          = euler::syscall::encode_color(0xff, 0xff, 0xff);
+    have_initialized_decoration_stuff = true;
+  }
+
+  static_assert( decorations_extra_width ==  4);
+  static_assert(decorations_extra_height == 18);
+
+  auto border_color = top ? border_color_top : border_color_not_top;
+
+  contents_with_decorations.fill(border_color, 0, 0,
+    contents_with_decorations.width, 16);
+  contents_with_decorations.fill(
+    border_color, 0, contents_with_decorations.height - 2,
+    contents_with_decorations.width, 2);
+  contents_with_decorations.fill(border_color, 0, 16,
+    2, contents_with_decorations.height - 18);
+  contents_with_decorations.fill(border_color,
+    contents_with_decorations.width - 2, 16,
+    2, contents_with_decorations.height - 18);
+
+  //TODO: make UTF-8--safe
+  unsigned max_title_length =
+    contents_with_decorations.width / title_font->glyph_width;
+  std::string *title_to_draw;
+  std::string shortened_title;
+  if (title.size() > max_title_length) {
+    shortened_title.resize(max_title_length - 3);
+    memcpy(shortened_title.data(), title.data(), max_title_length - 3);
+    shortened_title[max_title_length - 3] = '.';
+    shortened_title[max_title_length - 2] = '.';
+    shortened_title[max_title_length - 1] = '.';
+    title_to_draw = &shortened_title;
+  }
+  else
+    title_to_draw = &title;
+
+  contents_with_decorations.render_text(*title_font, top,
+    contents_with_decorations.width / 2 -
+      (title_to_draw->size() * title_font->glyph_width) / 2,
+    2, title_to_draw->data(), title_converter);
+
+}
diff --git a/applications/goldman/source/window.hpp b/applications/goldman/source/window.hpp
index 4d5b0e1..5c2d7a0 100644
--- a/applications/goldman/source/window.hpp
+++ b/applications/goldman/source/window.hpp
@@ -4,6 +4,10 @@
 
 struct window {
 
+  static constexpr int decorations_extra_width  =  4;
+  static constexpr int decorations_extra_height = 18;
+
+  daguerre::image<daguerre::hilbert_color> contents_with_decorations;
   daguerre::image<daguerre::hilbert_color> contents;
 
   int x;
@@ -13,6 +17,12 @@ struct window {
 
   std::string title;
 
-  window() : x(0), y(0), is_shown(false) {}
+  void set_size(int width, int height);
+  void draw_decorations(bool top);
+
+  inline window() : x(0), y(0), is_shown(false) {
+    set_size(0, 0);
+    draw_decorations(false);
+  }
 
 };