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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002-2003 The ScummVM project
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*/
#include "stdafx.h"
#include "EditTextWidget.h"
#include "dialog.h"
#include "newgui.h"
EditTextWidget::EditTextWidget(GuiObject *boss, int x, int y, int w, int h, const String &text)
: StaticTextWidget(boss, x, y-1, w, h+2, text, kTextAlignLeft), _backupString(text) {
_flags = WIDGET_ENABLED | WIDGET_CLEARBG | WIDGET_RETAIN_FOCUS | WIDGET_WANT_TICKLE;
_type = kEditTextWidget;
_caretVisible = false;
_caretTime = 0;
_pos = _label.size();
_labelOffset = (g_gui.getStringWidth(_label) - (_w - 6));
if (_labelOffset < 0)
_labelOffset = 0;
}
void EditTextWidget::handleTickle() {
uint32 time = g_system->get_msecs();
if (_caretTime < time) {
_caretTime = time + kCaretBlinkTime;
if (_caretVisible) {
drawCaret(true);
} else {
drawCaret(false);
}
}
}
void EditTextWidget::handleMouseDown(int x, int y, int button, int clickCount){
// First remove caret
if (_caretVisible)
drawCaret(true);
NewGui *gui = &g_gui;
x += _labelOffset;
int width = 0;
int i;
for (i = 0; i < _label.size(); ++i) {
width += gui->getCharWidth(_label[i]);
if (width >= x)
break;
}
_pos = i;
if (adjustOffset())
draw();
}
bool EditTextWidget::handleKeyDown(uint16 ascii, int keycode, int modifiers) {
bool handled = true;
bool dirty = false;
// First remove caret
if (_caretVisible)
drawCaret(true);
switch (keycode) {
case '\n': // enter/return
case '\r':
releaseFocus();
dirty = true;
break;
case 27: // escape
_label = _backupString;
_pos = _label.size() - 1;
_labelOffset = (g_gui.getStringWidth(_label) - (_w-6));
if (_labelOffset < 0)
_labelOffset = 0;
releaseFocus();
dirty = true;
break;
case 8: // backspace
if (_pos > 0) {
_pos--;
_label.deleteChar(_pos);
}
dirty = true;
break;
case 127: // delete
_label.deleteChar(_pos);
dirty = true;
break;
case 256 + 20: // left arrow
if (_pos > 0) {
_pos--;
dirty = adjustOffset();
}
break;
case 256 + 19: // right arrow
if (_pos < _label.size()) {
_pos++;
dirty = adjustOffset();
}
break;
case 256 + 22: // home
_pos = 0;
dirty = adjustOffset();
break;
case 256 + 23: // end
_pos = _label.size();
dirty = adjustOffset();
break;
default:
if (isprint((char)ascii)) {
_label.insertChar((char)ascii, _pos++);
//_label += (char)ascii;
dirty = true;
} else {
handled = false;
}
}
if (dirty)
draw();
return handled;
}
void EditTextWidget::drawWidget(bool hilite) {
// Draw a thin frame around us.
g_gui.hLine(_x, _y, _x + _w - 1, g_gui._color);
g_gui.hLine(_x, _y + _h - 1, _x +_w - 1, g_gui._shadowcolor);
g_gui.vLine(_x, _y, _y + _h - 1, g_gui._color);
g_gui.vLine(_x + _w - 1, _y, _y + _h - 1, g_gui._shadowcolor);
// Draw the text
adjustOffset();
g_gui.drawString(_label, _x + 2, _y + 3, _w - 6, g_gui._textcolor, kTextAlignLeft, -_labelOffset);
}
int EditTextWidget::getCaretPos() {
int caretpos = 0;
for (int i = 0; i < _pos; i++)
caretpos += g_gui.getCharWidth(_label[i]);
caretpos -= _labelOffset;
return caretpos;
}
void EditTextWidget::drawCaret(bool erase) {
// Only draw if item is visible
if (!isVisible() || !_boss->isVisible())
return;
int16 color = erase ? g_gui._bgcolor : g_gui._textcolorhi;
int x = getAbsX() + 2;
int y = getAbsY() + 1;
int width = getCaretPos();
x += width;
g_gui.vLine(x, y, y + kLineHeight, color);
g_gui.addDirtyRect(x, y, 2, kLineHeight);
_caretVisible = !erase;
}
bool EditTextWidget::adjustOffset() {
// check if the caret is still within the textbox; if it isn't,
// adjust _labelOffset
int caretpos = getCaretPos();
if (caretpos < 0) {
// scroll left
_labelOffset += caretpos;
return true;
}
else if (caretpos >= _w - 6)
{
// scroll right
_labelOffset -= (_w - 6 - caretpos);
return true;
}
else if (_labelOffset > 0)
{
int width = g_gui.getStringWidth(_label);
if (width - _labelOffset < (_w - 6)) {
// scroll right
_labelOffset = (width - (_w - 6));
if (_labelOffset < 0)
_labelOffset = 0;
}
}
return false;
}
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