rtorrent/display: Initial ncurses canvas implementation.

git-svn-id: svn://rakshasa.no/libtorrent/trunk/rtorrent@234 e378c898-3ddf-0310-93e7-cc216c733640

src/display/canvas.cc

@@ -0,0 +1,23 @@
+#include "config.h"
+
+#include "canvas.h"
+#include <stdarg.h>
+
+namespace display {
+
+void
+Canvas::init() {
+  initscr();
+  cbreak();
+  noecho();
+  nodelay(stdscr, TRUE);
+  keypad(stdscr, TRUE);
+  curs_set(0);
+}
+
+void
+Canvas::cleanup() {
+  endwin();
+}
+
+}

src/display/canvas.h

@@ -0,0 +1,55 @@
+#ifndef RTORRENT_DISPLAY_CANVAS_H
+#define RTORRENT_DISPLAY_CANVAS_H
+
+#include <string>
+#include <ncurses.h>
+
+namespace display {
+
+class Canvas {
+public:
+  Canvas(int x, int y, int width = 0, int height = 0) :
+    m_window(newwin(height, width, y, x)) {}
+  ~Canvas() { delwin(m_window); }
+
+  void      refresh()                                          { wnoutrefresh(m_window); }
+  void      redraw()                                           { redrawwin(m_window); }
+
+  void      update_size(int w, int h)                          { wresize(m_window, h, w); }
+
+  int       get_x()                                            { int x, y; getyx(m_window, y, x); return x; }
+  int       get_y()                                            { int x, y; getyx(m_window, y, x); return y; }
+  int       get_width()                                        { int x, y; getmaxyx(m_window, y, x); return x; }
+  int       get_height()                                       { int x, y; getmaxyx(m_window, y, x); return y; }
+
+  chtype    get_background()                                   { return getbkgd(m_window); }
+  void      set_background(chtype c)                           { return wbkgdset(m_window, c); }
+
+  void      erase()                                            { werase(m_window); }
+
+  void      print(int x, int y, const char* str)               { mvwprintw(m_window, y, x, str); }
+
+  template <typename A1>
+  void      print(int x, int y, const char* str, A1 a1)        { mvwprintw(m_window, y, x, str, a1); }
+
+  template <typename A1, typename A2>
+  void      print(int x, int y, const char* str, A1 a1, A2 a2) { mvwprintw(m_window, y, x, str, a1, a2); }
+
+  void      print_border(chtype ls, chtype rs,
+			 chtype ts, chtype bs,
+			 chtype tl, chtype tr,
+			 chtype bl, chtype br)                 { wborder(m_window, ls, rs, ts, bs, tl, tr, bl, br); }
+
+  // Initialize stdscr.
+  static void init();
+  static void cleanup();
+
+  static void do_update()                                      { doupdate(); }
+
+private:
+  WINDOW*   m_window;
+};
+
+}
+
+#endif