--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sources/interface.cpp Sat Dec 13 07:36:00 2014 +0200
@@ -0,0 +1,213 @@
+/*
+ Copyright 2014 Teemu Piippo
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ 3. Neither the name of the copyright holder nor the names of its
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
+ OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <string.h>
+#include "interface.h"
+
+static String g_input;
+static int g_cursor = 0;
+static int g_pan = 0;
+static bool g_needRefresh = false;
+
+// -------------------------------------------------------------------------------------------------
+//
+static FUNCTION
+interface_sessions_width() -> int
+{
+ return COLS / 3;
+}
+
+// -------------------------------------------------------------------------------------------------
+//
+static FUNCTION
+interface_render_titlebar() -> void
+{
+ String versionText = format (APPNAME " %1 (%2)",
+ full_version_string(), changeset_date_string());
+
+ if (versionText.length() <= COLS)
+ mvprintw (0, (COLS - versionText.length()) / 2, "%s", versionText.chars());
+}
+
+// -------------------------------------------------------------------------------------------------
+//
+static FUNCTION
+interface_render_log_area() -> void
+{
+
+}
+
+// -------------------------------------------------------------------------------------------------
+//
+static FUNCTION
+interface_render_input() -> void
+{
+ static char prompt[] = "> ";
+ int displaylength = COLS - strlen (prompt) - 1;
+ int y = LINES - 2;
+
+ // Ensure that the cursor is always in view, adjust panning if this is not the case
+ if (g_cursor > g_pan + displaylength)
+ g_pan = g_cursor - displaylength; // cursor went too far right
+ else if (g_cursor < g_pan)
+ g_pan = g_cursor; // cursor went past the pan value to the left
+
+ int start = g_pan;
+ int end = min<int> (g_input.length(), start + displaylength);
+ assert (g_cursor >= start and g_cursor <= end);
+ String displayTextBegin = g_input.mid (start, g_cursor);
+ String displayTextEnd = g_input.mid (g_cursor, end);
+
+ // Clear, but only as much as is necessary. I want to avoid clearing the entire line to save
+ // bandwidth over SSH connections. Perhaps needlessly? I'm paranoid.
+ int renderLength = strlen (prompt) + displayTextBegin.length() + displayTextEnd.length();
+ static int lastRenderLength = 0;
+
+ if (lastRenderLength > renderLength)
+ mvhline (y, renderLength, ' ', lastRenderLength - renderLength);
+
+ lastRenderLength = renderLength;
+
+ // Render the input line, with the part of the input string that's before the cursor written
+ // AFTER the part that comes afterwards. This is to ensure that the cursor is placed at the
+ // position where our cursor is. It looks nice like that. :)
+ mvprintw (y, 0, "%s", prompt);
+ mvprintw (y, strlen (prompt) + displayTextBegin.length(), "%s", displayTextEnd.chars());
+ mvprintw (y, strlen (prompt), "%s", displayTextBegin.chars());
+ g_needRefresh = true;
+}
+
+// -------------------------------------------------------------------------------------------------
+//
+static FUNCTION
+interface_render_statusbar() -> void
+{
+
+}
+
+// -------------------------------------------------------------------------------------------------
+//
+static FUNCTION
+interface_render_full() -> void
+{
+ interface_render_titlebar();
+ interface_render_log_area();
+ interface_render_statusbar();
+ interface_render_input();
+ g_needRefresh = true;
+}
+
+// -------------------------------------------------------------------------------------------------
+//
+FUNCTION
+Interface::initialize() -> void
+{
+ ::initscr();
+ ::start_color();
+ ::raw();
+ ::keypad (stdscr, true);
+ ::noecho();
+ ::refresh();
+ ::timeout (0);
+ interface_render_full();
+ refresh();
+ g_needRefresh = false;
+}
+
+// -------------------------------------------------------------------------------------------------
+//
+FUNCTION
+Interface::handle_input() -> void
+{
+ int ch = ::getch();
+
+ if (ch == KEY_F(1))
+ {
+ endwin();
+ exit (EXIT_SUCCESS);
+ }
+ else if (ch >= 0x20 and ch <= 0x7E)
+ {
+ g_input.insert (g_cursor++, char (ch));
+ interface_render_input();
+ refresh();
+ }
+ else if (ch == KEY_LEFT)
+ {
+ if (g_cursor > 0)
+ {
+ g_cursor--;
+ interface_render_input();
+ }
+ }
+ else if (ch == KEY_RIGHT)
+ {
+ if (g_cursor < g_input.length())
+ {
+ g_cursor++;
+ interface_render_input();
+ }
+ }
+ else if (ch == KEY_HOME)
+ {
+ if (g_cursor != 0)
+ {
+ g_cursor = 0;
+ interface_render_input();
+ }
+ }
+ else if (ch == KEY_END)
+ {
+ if (g_cursor != g_input.length())
+ {
+ g_cursor = g_input.length();
+ interface_render_input();
+ }
+ }
+ else if (ch == KEY_BACKSPACE)
+ {
+ if (not g_input.is_empty() and g_cursor > 0)
+ {
+ g_input.remove_at (--g_cursor);
+ interface_render_input();
+ }
+ }
+
+ if (g_needRefresh)
+ {
+ refresh();
+ g_needRefresh = false;
+ }
+}
+
+FUNCTION print_to_console (const String& a) -> void
+{
+
+}