mirror of
https://github.com/libretro/scummvm.git
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371 lines
8.7 KiB
C++
371 lines
8.7 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2002 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*/
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#include "stdafx.h"
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#include "ListWidget.h"
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#include "ScrollBarWidget.h"
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#include "dialog.h"
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#include "newgui.h"
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ListWidget::ListWidget(Dialog *boss, int x, int y, int w, int h)
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: Widget(boss, x, y, w - kScrollBarWidth, h), CommandSender(boss)
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{
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_flags = WIDGET_ENABLED | WIDGET_CLEARBG | WIDGET_RETAIN_FOCUS | WIDGET_WANT_TICKLE;
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_type = kListWidget;
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_numberingMode = kListNumberingOne;
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_entriesPerPage = (_h - 2) / kLineHeight;
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_currentPos = 0;
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_selectedItem = -1;
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_scrollBar = new ScrollBarWidget(boss, _x + _w, _y, kScrollBarWidth, _h);
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_scrollBar->setTarget(this);
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_currentKeyDown = 0;
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_caretVisible = false;
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_caretTime = 0;
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// FIXME: This flag should come from widget definition
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_editable = true;
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_editMode = false;
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}
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ListWidget::~ListWidget()
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{
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}
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void ListWidget::setList(const StringList& list)
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{
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if (_editMode && _caretVisible)
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drawCaret(true);
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int size = list.size();
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_list = list;
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if (_currentPos >= size)
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_currentPos = size - 1;
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if (_currentPos < 0)
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_currentPos = 0;
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_selectedItem = -1;
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_editMode = false;
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scrollBarRecalc();
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}
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void ListWidget::scrollTo(int item)
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{
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int size = _list.size();
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if (item >= size)
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item = size - 1;
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if (item < 0)
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item = 0;
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if (_currentPos != item) {
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_currentPos = item;
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scrollBarRecalc();
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}
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}
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void ListWidget::scrollBarRecalc()
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{
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_scrollBar->_numEntries = _list.size();
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_scrollBar->_entriesPerPage = _entriesPerPage;
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_scrollBar->_currentPos = _currentPos;
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_scrollBar->recalc();
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}
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void ListWidget::handleTickle()
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{
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uint32 time = _boss->getGui()->get_time();
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if (_editMode && _caretTime < time) {
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_caretTime = time + kCaretBlinkTime;
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if (_caretVisible) {
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drawCaret(true);
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} else {
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drawCaret(false);
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}
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}
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}
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void ListWidget::handleMouseDown(int x, int y, int button, int clickCount)
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{
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if (isEnabled()) {
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int oldSelectedItem = _selectedItem;
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_selectedItem = (y - 1) / kLineHeight + _currentPos;
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if (_selectedItem > _list.size() - 1)
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_selectedItem = -1;
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if (oldSelectedItem != _selectedItem) {
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if (_editMode) {
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// undo any changes made
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_list[oldSelectedItem] = _backupString;
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_editMode = false;
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drawCaret(true);
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}
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sendCommand(kListSelectionChangedCmd, _selectedItem);
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}
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draw();
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}
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}
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void ListWidget::handleMouseUp(int x, int y, int button, int clickCount)
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{
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// If this was a double click and the mouse is still over the selected item,
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// send the double click command
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if (clickCount > 1 && (_selectedItem == (y - 1) / kLineHeight + _currentPos)) {
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sendCommand(kListItemDoubleClickedCmd, _selectedItem);
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}
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}
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void ListWidget::handleMouseWheel(int x, int y, int direction)
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{
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_scrollBar->handleMouseWheel(x, y, direction);
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}
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bool ListWidget::handleKeyDown(char key, int modifiers)
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{
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bool handled = true;
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bool dirty = false;
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int oldSelectedItem = _selectedItem;
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if (_editMode) {
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if (_caretVisible)
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drawCaret(true);
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if (key == '\n' || key == '\r') {
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// enter, confirm edit and exit editmode
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_editMode = false;
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dirty = true;
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sendCommand(kListItemActivatedCmd, _selectedItem);
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} else if (key == 27) {
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// ESC, abort edit and exit editmode
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_editMode = false;
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dirty = true;
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_list[_selectedItem] = _backupString;
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} else if (key == 8) { // backspace
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_list[_selectedItem].deleteLastChar();
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dirty = true;
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} else if (// filter keystrokes
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( ( key >= 'a' && key <= 'z' )
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|| ( key >= 'A' && key <= 'Z' )
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|| ( key >= '0' && key <= '9' )
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|| ( key == ' ')
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) )
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{
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_list[_selectedItem] += key;
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dirty = true;
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} else
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handled = false;
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} else {
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// not editmode
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switch (key) {
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case '\n': // enter
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case '\r':
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if (_selectedItem >= 0) {
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// override continuous enter keydown
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if (_editable && (_currentKeyDown != '\n' && _currentKeyDown != '\r')) {
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dirty = true;
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_editMode = true;
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_backupString = _list[_selectedItem];
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}
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}
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break;
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case 17: // up arrow
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if (_selectedItem > 0)
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_selectedItem--;
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break;
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case 18: // down arrow
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if (_selectedItem < _list.size() - 1)
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_selectedItem++;
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break;
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case 24: // pageup
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_selectedItem -= _entriesPerPage - 1;
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if (_selectedItem < 0)
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_selectedItem = 0;
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break;
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case 25: // pagedown
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_selectedItem += _entriesPerPage - 1;
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if (_selectedItem >= _list.size() )
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_selectedItem = _list.size() - 1;
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break;
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case 22: // home
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_selectedItem = 0;
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break;
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case 23: // end
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_selectedItem = _list.size() - 1;
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break;
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default:
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handled = false;
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}
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scrollToCurrent();
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}
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if (dirty || _selectedItem != oldSelectedItem)
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draw();
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if (_selectedItem != oldSelectedItem) {
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sendCommand(kListSelectionChangedCmd, _selectedItem);
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// also draw scrollbar
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_scrollBar->draw();
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}
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#ifndef _WIN32_WCE
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// not done on WinCE because keyboard is emulated and
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// keyup is not generated
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_currentKeyDown = key;
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#endif
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return handled;
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}
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bool ListWidget::handleKeyUp(char key, int modifiers)
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{
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if (key == _currentKeyDown)
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_currentKeyDown = 0;
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return true;
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}
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void ListWidget::lostFocusWidget()
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{
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_editMode = false;
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drawCaret(true);
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draw();
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}
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void ListWidget::handleCommand(CommandSender *sender, uint32 cmd, uint32 data)
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{
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switch (cmd) {
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case kSetPositionCmd:
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if (_currentPos != (int)data) {
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_currentPos = data;
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draw();
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}
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break;
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}
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}
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void ListWidget::drawWidget(bool hilite)
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{
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NewGui *gui = _boss->getGui();
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int i, pos, len = _list.size();
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ScummVM::String buffer;
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// Draw a thin frame around the list.
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gui->hline(_x, _y, _x+_w-1, gui->_color);
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gui->hline(_x, _y+_h-1, _x+_w-1, gui->_shadowcolor);
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gui->vline(_x, _y, _y+_h-1, gui->_color);
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// Draw the list items
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for (i = 0, pos = _currentPos; i < _entriesPerPage && pos < len; i++, pos++) {
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if (_numberingMode == kListNumberingZero || _numberingMode == kListNumberingOne) {
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char temp[10];
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sprintf(temp, "%2d. ", (pos + _numberingMode));
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buffer = temp;
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buffer += _list[pos];
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} else
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buffer = _list[pos];
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if (_selectedItem == pos) {
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if (_hasFocus)
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gui->fillRect(_x+1, _y+1 + kLineHeight * i, _w - 1, kLineHeight, gui->_textcolorhi);
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else
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gui->frameRect(_x+1, _y+1 + kLineHeight * i, _w - 1, kLineHeight, gui->_textcolorhi);
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}
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gui->drawString(buffer, _x+2, _y+3 + kLineHeight * i, _w - 4,
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(_selectedItem == pos && _hasFocus) ? gui->_bgcolor : gui->_textcolor);
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}
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}
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void ListWidget::drawCaret(bool erase)
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{
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// Only draw if item is visible
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if (_selectedItem < _currentPos || _selectedItem >= _currentPos + _entriesPerPage)
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return;
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if (!isVisible() || !_boss->isVisible())
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return;
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NewGui *gui = _boss->getGui();
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// The item is selected, thus _bgcolor is used to draw the caret and _textcolorhi to erase it
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int16 color = erase ? gui->_textcolorhi : gui->_bgcolor;
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int x = _x + _boss->getX() + 3;
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int y = _y + _boss->getY() + 1;
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ScummVM::String buffer;
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y += (_selectedItem - _currentPos) * kLineHeight;
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if (_numberingMode == kListNumberingZero || _numberingMode == kListNumberingOne) {
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char temp[10];
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sprintf(temp, "%2d. ", (_selectedItem + _numberingMode));
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buffer = temp;
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buffer += _list[_selectedItem];
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} else
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buffer = _list[_selectedItem];
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x += gui->getStringWidth(buffer);
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gui->vline(x, y, y+kLineHeight, color);
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gui->addDirtyRect(x, y, 2, kLineHeight);
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_caretVisible = !erase;
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}
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void ListWidget::scrollToCurrent() {
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// Only do something if the current item is not in our view port
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if (_selectedItem < _currentPos) {
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// it's above our view
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_currentPos = _selectedItem;
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} else if (_selectedItem >= _currentPos + _entriesPerPage ) {
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// it's below our view
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_currentPos = _selectedItem - _entriesPerPage + 1;
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}
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if (_currentPos < 0)
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_currentPos = 0;
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_scrollBar->_currentPos = _currentPos;
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_scrollBar->recalc();
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}
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void ListWidget::startEditMode()
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{
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if (_editable && !_editMode && _selectedItem >= 0) {
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_editMode = true;
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_backupString = _list[_selectedItem];
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draw();
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}
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}
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void ListWidget::abortEditMode()
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{
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if (_editMode) {
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_editMode = false;
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_list[_selectedItem] = _backupString;
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drawCaret(true);
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draw();
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}
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}
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