1 files changed, 277 insertions, 0 deletions

diff --git a/util/fbrun/FbRun.cc b/util/fbrun/FbRun.cc
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+++ b/util/fbrun/FbRun.cc
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+// FbRun.hh
+// Copyright (c) 2002 Henrik Kinnunen (fluxgen@linuxmail.org)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+// $Id: FbRun.cc,v 1.11 2003/04/27 02:26:21 rathnor Exp $
+
+#include "FbRun.hh"
+
+#include "App.hh"
+#include "EventManager.hh"
+#include "Color.hh"
+
+#include <X11/Xlib.h>
+#include <X11/keysym.h>
+#include <X11/Xutil.h>
+#include <X11/cursorfont.h>
+
+#include <unistd.h>
+
+#include <iostream>
+#include <fstream>
+#include <cassert>
+
+using namespace std;
+FbRun::FbRun(int x, int y, size_t width):
+    m_font("fixed"),
+    m_win((int)0, x, y,  //screen num and position
+          width + m_bevel, m_font.height() + 2,  // size
+          KeyPressMask|ExposureMask), // eventmask
+    m_display(FbTk::App::instance()->display()),
+    m_bevel(4),
+    m_gc(DefaultGC(m_display, DefaultScreen(m_display))),
+    m_end(false),
+    m_current_history_item(0),
+    m_cursor(XCreateFontCursor(FbTk::App::instance()->display(), XC_xterm)),
+    m_cursor_pos(0) {
+    XDefineCursor(FbTk::App::instance()->display(), m_win.window(), m_cursor);
+    // setting nomaximize in local resize
+    resize(width, m_font.height());
+    FbTk::EventManager::instance()->registerEventHandler(*this, m_win.window());
+}
+
+FbRun::~FbRun() {
+    hide();
+    FbTk::EventManager::instance()->unregisterEventHandler(m_win.window());
+}
+
+void FbRun::run(const std::string &command) {
+    //fork and execute program
+    if (!fork()) {
+        setsid();
+        execl("/bin/sh", "/bin/sh", "-c", command.c_str(), 0);
+        exit(0); //exit child
+    }
+
+    hide(); // hide gui
+        
+    // save command history to file
+    if (m_runtext.size() != 0) { // no need to save empty command
+        // open file in append mode
+        ofstream outfile(m_history_file.c_str(), ios::app);
+        if (outfile)
+            outfile<<m_runtext<<endl;
+        else 
+            cerr<<"FbRun Warning: Can't write command history to file: "<<m_history_file<<endl;
+    }
+    FbTk::App::instance()->end(); // end application
+    m_end = true; // mark end of processing
+}
+
+bool FbRun::loadHistory(const char *filename) {
+    if (filename == 0)
+        return false;
+    ifstream infile(filename);
+    if (!infile) {
+        //even though we fail to load file, we should try save to it
+        m_history_file = filename;
+        return false;
+    }
+    // clear old history and load new one from file
+    m_history.clear();
+    // each line is a command
+    string line;
+    while (!infile.eof()) {
+        getline(infile, line);
+        if (line.size()) // don't add empty lines
+            m_history.push_back(line);
+    }
+    // set no current histor to display
+    m_current_history_item = m_history.size();
+    // set history file
+    m_history_file = filename;
+    return true;
+}
+
+bool FbRun::loadFont(const string &fontname) {
+    if (!m_font.load(fontname.c_str()))
+        return false;
+
+    // resize to fit new font height
+    resize(m_win.width(), m_font.height() + m_bevel);
+    return true;
+}
+
+void FbRun::setForeground(const FbTk::Color &color) {
+    XSetForeground(m_display, m_gc, color.pixel());
+    redrawLabel();
+}
+
+void FbRun::setBackground(const FbTk::Color &color) {
+    m_win.setBackgroundColor(color);
+    redrawLabel();
+}
+
+
+void FbRun::setText(const string &text) {
+    m_runtext = text;
+    redrawLabel();
+}
+
+void FbRun::setTitle(const string &title) {
+    m_win.setName(title.c_str());
+}
+
+void FbRun::move(int x, int y) {
+    m_win.move(x, y);
+}
+
+void FbRun::resize(size_t width, size_t height) {
+    m_win.resize(width, height);        
+    setNoMaximize();
+}
+
+void FbRun::show() {
+    m_win.show();
+}
+
+void FbRun::hide() {
+    m_win.hide();
+}
+
+void FbRun::redrawLabel() {
+    m_win.clear();
+    drawString(m_bevel/2, m_font.ascent() + m_bevel/2,
+               m_runtext.c_str(), m_runtext.size());
+
+}
+
+void FbRun::drawString(int x, int y,
+                       const char *text, size_t len) {
+    assert(m_gc);
+
+    // check right boundary and adjust text drawing
+    size_t text_width = m_font.textWidth(text, len);
+    size_t startpos = 0;
+    if (text_width > m_win.width()) {
+        for (; startpos < len; ++startpos) {
+            if (m_font.textWidth(text+startpos, len-startpos) < m_win.width())
+                break;
+        }               
+    }
+
+    m_font.drawText(m_win.window(), DefaultScreen(m_display), m_gc, text + startpos, len-startpos, x, y - 2);
+    int cursor_pos = m_font.textWidth(text + m_cursor_pos, len - startpos) + 1;
+    // draw cursor position
+    XDrawLine(FbTk::App::instance()->display(), m_win.window(), m_gc,
+              cursor_pos, 0,
+              cursor_pos, m_font.height());
+}
+
+void FbRun::keyPressEvent(XKeyEvent &ke) {
+    KeySym ks;
+    char keychar[1];
+    XLookupString(&ke, keychar, 1, &ks, 0);
+    if (ks == XK_Escape) {
+        m_end = true;
+        hide();
+        FbTk::App::instance()->end(); // end program
+    } else if (ks == XK_Return) {
+        run(m_runtext);
+        m_runtext = ""; // clear text
+    } else if (ks == XK_BackSpace) {
+        if (m_runtext.size() != 0) { // we can't erase what we don't have ;)
+            m_runtext.erase(m_runtext.size()-1);
+            redrawLabel();
+            m_cursor_pos--;
+        }
+    } else if (! IsModifierKey(ks) && !IsCursorKey(ks)) { // insert normal character at cursor pos
+        char in_char[2] = {keychar[0], 0};
+        m_runtext.insert(m_cursor_pos, in_char); 
+        m_cursor_pos++;
+        redrawLabel(); 
+    } else if (IsCursorKey(ks)) {
+                
+        switch (ks) {
+        case XK_Up:
+            prevHistoryItem();
+            break;
+        case XK_Down:
+            nextHistoryItem();
+            break;
+        case XK_Left:
+            cursorLeft();
+            break;
+        case XK_Right:
+            cursorRight();
+            break;
+        }
+        redrawLabel();
+    } else if (ks == XK_End) {
+        m_cursor_pos = m_runtext.size() - 1;
+    }
+}
+
+void FbRun::exposeEvent(XExposeEvent &ev) {
+    redrawLabel();
+}
+
+
+void FbRun::setNoMaximize() {
+    // we don't need to maximize this window
+    XSizeHints sh;
+    sh.flags = PMaxSize | PMinSize;
+    sh.max_width = m_win.width();
+    sh.max_height = m_win.height();
+    sh.min_width = m_win.width();
+    sh.min_height = m_win.height();
+    XSetWMNormalHints(m_display, m_win.window(), &sh);
+}
+
+void FbRun::prevHistoryItem() {
+
+    if (m_current_history_item > 0 && m_history.size() > 0)
+        m_current_history_item--;
+    if (m_current_history_item < m_history.size())
+        m_runtext = m_history[m_current_history_item];
+}
+
+void FbRun::nextHistoryItem() {
+    m_current_history_item++;
+    if (m_current_history_item >= m_history.size()) {
+        m_current_history_item = m_history.size();
+        m_runtext = "";
+        return;
+    } else 
+        m_runtext = m_history[m_current_history_item];
+
+}
+
+
+void FbRun::cursorLeft() {
+    if (m_cursor_pos > 0)
+        m_cursor_pos--;
+}
+
+void FbRun::cursorRight() {
+    m_cursor_pos++;
+    if (m_cursor_pos >= m_runtext.size())
+        m_cursor_pos = m_runtext.size() - 1;
+}