mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-15 06:08:35 +00:00
ef330ed9b4
svn-id: r48101
749 lines
18 KiB
C++
749 lines
18 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*/
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#include "gui/console.h"
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#include "gui/ScrollBarWidget.h"
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#include "gui/ThemeEval.h"
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#include "engines/engine.h"
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#include "base/version.h"
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#include "common/events.h"
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#include "common/system.h"
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#include "graphics/fontman.h"
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namespace GUI {
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#define kConsoleCharWidth (_font->getMaxCharWidth())
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#define kConsoleLineHeight (_font->getFontHeight() + 2)
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enum {
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kConsoleSlideDownDuration = 200 // Time in milliseconds
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};
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#define PROMPT ") "
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/* TODO:
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* - it is very inefficient to redraw the full thingy when just one char is added/removed.
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* Instead, we could just copy the GFX of the blank console (i.e. after the transparent
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* background is drawn, before any text is drawn). Then using that, it becomes trivial
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* to erase a single character, do scrolling etc.
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* - a *lot* of others things, this code is in no way complete and heavily under progress
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*/
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ConsoleDialog::ConsoleDialog(float widthPercent, float heightPercent)
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: Dialog(0, 0, 1, 1),
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_widthPercent(widthPercent), _heightPercent(heightPercent) {
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// Reset the line buffer
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memset(_buffer, ' ', kBufferSize);
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// Dummy
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_scrollBar = new ScrollBarWidget(this, 0, 0, 5, 10);
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_scrollBar->setTarget(this);
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init();
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_currentPos = 0;
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_scrollLine = _linesPerPage - 1;
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_firstLineInBuffer = 0;
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_caretVisible = false;
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_caretTime = 0;
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_slideMode = kNoSlideMode;
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_slideTime = 0;
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_promptStartPos = _promptEndPos = -1;
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// Init callback
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_callbackProc = 0;
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_callbackRefCon = 0;
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// Init History
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_historyIndex = 0;
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_historyLine = 0;
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_historySize = 0;
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for (int i = 0; i < kHistorySize; i++)
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_history[i][0] = '\0';
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// Display greetings & prompt
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print(gScummVMFullVersion);
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print("\nConsole is ready\n");
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}
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void ConsoleDialog::init() {
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const int screenW = g_system->getOverlayWidth();
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const int screenH = g_system->getOverlayHeight();
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_font = FontMan.getFontByUsage((Graphics::FontManager::FontUsage)
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g_gui.xmlEval()->getVar("Console.Font", Graphics::FontManager::kConsoleFont));
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_leftPadding = g_gui.xmlEval()->getVar("Globals.Console.Padding.Left", 0);
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_rightPadding = g_gui.xmlEval()->getVar("Globals.Console.Padding.Right", 0);
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_topPadding = g_gui.xmlEval()->getVar("Globals.Console.Padding.Top", 0);
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_bottomPadding = g_gui.xmlEval()->getVar("Globals.Console.Padding.Bottom", 0);
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// Calculate the real width/height (rounded to char/line multiples)
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_w = (uint16)(_widthPercent * screenW);
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_h = (uint16)((_heightPercent * screenH - 2) / kConsoleLineHeight);
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_w = _w - _w / 20;
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_h = _h * kConsoleLineHeight + 2;
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_x = _w / 40;
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// Set scrollbar dimensions
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int scrollBarWidth = g_gui.xmlEval()->getVar("Globals.Scrollbar.Width", 0);
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_scrollBar->resize(_w - scrollBarWidth - 1, 0, scrollBarWidth, _h);
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_pageWidth = (_w - scrollBarWidth - 2 - _leftPadding - _topPadding - scrollBarWidth) / kConsoleCharWidth;
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_linesPerPage = (_h - 2 - _topPadding - _bottomPadding) / kConsoleLineHeight;
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_linesInBuffer = kBufferSize / kCharsPerLine;
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}
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void ConsoleDialog::slideUpAndClose() {
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if (_slideMode == kNoSlideMode) {
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_slideTime = g_system->getMillis();
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_slideMode = kUpSlideMode;
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}
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}
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void ConsoleDialog::open() {
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// TODO: find a new way to do this
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// Initiate sliding the console down. We do a very simple trick to achieve
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// this effect: we simply move the console dialog just above (outside) the
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// visible screen area, then shift it down in handleTickle() over a
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// certain period of time.
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const int screenW = g_system->getOverlayWidth();
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const int screenH = g_system->getOverlayHeight();
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// Calculate the real width/height (rounded to char/line multiples)
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uint16 w = (uint16)(_widthPercent * screenW);
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uint16 h = (uint16)((_heightPercent * screenH - 2) / kConsoleLineHeight);
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h = h * kConsoleLineHeight + 2;
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w = w - w / 20;
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if (_w != w || _h != h)
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init();
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_y = -_h;
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_slideTime = g_system->getMillis();
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_slideMode = kDownSlideMode;
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Dialog::open();
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if (_promptStartPos == -1) {
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print(PROMPT);
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_promptStartPos = _promptEndPos = _currentPos;
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}
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}
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void ConsoleDialog::close() {
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Dialog::close();
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}
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void ConsoleDialog::drawDialog() {
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g_gui.theme()->drawDialogBackground(Common::Rect(_x, _y, _x + _w, _y + _h), ThemeEngine::kDialogBackgroundPlain/*_backgroundType*/);
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// FIXME: for the old theme the frame around the console vanishes
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// when any action is processed if we enable this
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// _drawingHints &= ~THEME_HINT_FIRST_DRAW;
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for (int line = 0; line < _linesPerPage; line++)
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drawLine(line, false);
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// Draw the scrollbar
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_scrollBar->draw();
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}
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void ConsoleDialog::drawLine(int line, bool restoreBg) {
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int x = _x + 1 + _leftPadding;
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int start = _scrollLine - _linesPerPage + 1;
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int y = _y + 2 + _topPadding;
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int limit = MIN(_pageWidth, (int)kCharsPerLine);
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y += line * kConsoleLineHeight;
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if (restoreBg) {
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Common::Rect r(_x, y - 2, _x + _pageWidth * kConsoleCharWidth, y+kConsoleLineHeight);
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g_gui.theme()->restoreBackground(r);
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g_gui.theme()->addDirtyRect(r);
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}
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for (int column = 0; column < limit; column++) {
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#if 0
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int l = (start + line) % _linesInBuffer;
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byte c = buffer(l * kCharsPerLine + column);
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#else
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byte c = buffer((start + line) * kCharsPerLine + column);
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#endif
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g_gui.theme()->drawChar(Common::Rect(x, y, x+kConsoleCharWidth, y+kConsoleLineHeight), c, _font);
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x += kConsoleCharWidth;
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}
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g_gui.theme()->updateScreen();
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}
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void ConsoleDialog::reflowLayout() {
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init();
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_scrollLine = _promptEndPos / kCharsPerLine;
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if (_scrollLine < _linesPerPage - 1)
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_scrollLine = _linesPerPage - 1;
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updateScrollBuffer();
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Dialog::reflowLayout();
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draw();
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}
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void ConsoleDialog::handleTickle() {
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uint32 time = g_system->getMillis();
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if (_caretTime < time) {
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_caretTime = time + kCaretBlinkTime;
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drawCaret(_caretVisible);
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}
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// Perform the "slide animation".
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if (_slideMode != kNoSlideMode) {
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const float tmp = (float)(g_system->getMillis() - _slideTime) / kConsoleSlideDownDuration;
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if (_slideMode == kUpSlideMode) {
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_y = (int)(_h * (0.0 - tmp));
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} else {
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_y = (int)(_h * (tmp - 1.0));
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}
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if (_slideMode == kDownSlideMode && _y > 0) {
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// End the slide
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_slideMode = kNoSlideMode;
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_y = 0;
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draw();
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} else if (_slideMode == kUpSlideMode && _y <= -_h) {
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// End the slide
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//_slideMode = kNoSlideMode;
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close();
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} else
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draw();
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}
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}
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void ConsoleDialog::handleMouseWheel(int x, int y, int direction) {
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_scrollBar->handleMouseWheel(x, y, direction);
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}
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void ConsoleDialog::handleKeyDown(Common::KeyState state) {
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int i;
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if (_slideMode != kNoSlideMode)
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return;
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switch (state.keycode) {
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case Common::KEYCODE_RETURN:
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case Common::KEYCODE_KP_ENTER: {
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if (_caretVisible)
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drawCaret(true);
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nextLine();
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assert(_promptEndPos >= _promptStartPos);
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int len = _promptEndPos - _promptStartPos;
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bool keepRunning = true;
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if (len > 0) {
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// We have to allocate the string buffer with new, since VC++ sadly does not
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// comply to the C++ standard, so we can't use a dynamic sized stack array.
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char *str = new char[len + 1];
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// Copy the user input to str
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for (i = 0; i < len; i++)
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str[i] = buffer(_promptStartPos + i);
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str[len] = '\0';
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// Add the input to the history
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addToHistory(str);
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// Pass it to the input callback, if any
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if (_callbackProc)
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keepRunning = (*_callbackProc)(this, str, _callbackRefCon);
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// Get rid of the string buffer
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delete[] str;
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}
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print(PROMPT);
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_promptStartPos = _promptEndPos = _currentPos;
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draw();
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if (!keepRunning)
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slideUpAndClose();
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break;
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}
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case Common::KEYCODE_ESCAPE:
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slideUpAndClose();
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break;
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case Common::KEYCODE_BACKSPACE:
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if (_caretVisible)
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drawCaret(true);
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if (_currentPos > _promptStartPos) {
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_currentPos--;
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killChar();
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}
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scrollToCurrent();
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drawLine(pos2line(_currentPos));
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break;
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case Common::KEYCODE_TAB: {
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if (_completionCallbackProc) {
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int len = _currentPos - _promptStartPos;
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assert(len >= 0);
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char *str = new char[len + 1];
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// Copy the user input to str
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for (i = 0; i < len; i++)
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str[i] = buffer(_promptStartPos + i);
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str[len] = '\0';
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Common::String completion;
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if ((*_completionCallbackProc)(this, str, completion, _callbackRefCon)) {
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if (_caretVisible)
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drawCaret(true);
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insertIntoPrompt(completion.c_str());
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scrollToCurrent();
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drawLine(pos2line(_currentPos));
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}
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delete[] str;
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}
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break;
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}
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// Keypad & special keys
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// - if num lock is set, we always go to the default case
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// - if num lock is not set, we either fall down to the special key case
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// or ignore the key press in case of 0 (INSERT) or 5
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case Common::KEYCODE_KP0:
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case Common::KEYCODE_KP5:
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if (state.flags & Common::KBD_NUM)
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defaultKeyDownHandler(state);
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break;
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case Common::KEYCODE_KP_PERIOD:
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if (state.flags & Common::KBD_NUM) {
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defaultKeyDownHandler(state);
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break;
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}
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case Common::KEYCODE_DELETE:
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if (_currentPos < _promptEndPos) {
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killChar();
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drawLine(pos2line(_currentPos));
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}
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break;
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case Common::KEYCODE_KP1:
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if (state.flags & Common::KBD_NUM) {
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defaultKeyDownHandler(state);
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break;
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}
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case Common::KEYCODE_END:
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if (state.hasFlags(Common::KBD_SHIFT)) {
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_scrollLine = _promptEndPos / kCharsPerLine;
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if (_scrollLine < _linesPerPage - 1)
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_scrollLine = _linesPerPage - 1;
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updateScrollBuffer();
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} else {
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_currentPos = _promptEndPos;
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}
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draw();
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break;
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case Common::KEYCODE_KP2:
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if (state.flags & Common::KBD_NUM) {
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defaultKeyDownHandler(state);
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break;
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}
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case Common::KEYCODE_DOWN:
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historyScroll(-1);
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break;
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case Common::KEYCODE_KP3:
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if (state.flags & Common::KBD_NUM) {
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defaultKeyDownHandler(state);
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break;
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}
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case Common::KEYCODE_PAGEDOWN:
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if (state.hasFlags(Common::KBD_SHIFT)) {
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_scrollLine += _linesPerPage - 1;
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if (_scrollLine > _promptEndPos / kCharsPerLine) {
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_scrollLine = _promptEndPos / kCharsPerLine;
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if (_scrollLine < _firstLineInBuffer + _linesPerPage - 1)
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_scrollLine = _firstLineInBuffer + _linesPerPage - 1;
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}
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updateScrollBuffer();
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draw();
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}
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break;
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case Common::KEYCODE_KP4:
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if (state.flags & Common::KBD_NUM) {
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defaultKeyDownHandler(state);
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break;
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}
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case Common::KEYCODE_LEFT:
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if (_currentPos > _promptStartPos)
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_currentPos--;
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drawLine(pos2line(_currentPos));
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break;
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case Common::KEYCODE_KP6:
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if (state.flags & Common::KBD_NUM) {
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defaultKeyDownHandler(state);
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break;
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}
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case Common::KEYCODE_RIGHT:
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if (_currentPos < _promptEndPos)
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_currentPos++;
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drawLine(pos2line(_currentPos));
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break;
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case Common::KEYCODE_KP7:
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if (state.flags & Common::KBD_NUM) {
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defaultKeyDownHandler(state);
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break;
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}
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case Common::KEYCODE_HOME:
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if (state.hasFlags(Common::KBD_SHIFT)) {
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_scrollLine = _firstLineInBuffer + _linesPerPage - 1;
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updateScrollBuffer();
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} else {
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_currentPos = _promptStartPos;
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}
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draw();
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break;
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case Common::KEYCODE_KP8:
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if (state.flags & Common::KBD_NUM) {
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defaultKeyDownHandler(state);
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break;
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}
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case Common::KEYCODE_UP:
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historyScroll(+1);
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break;
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case Common::KEYCODE_KP9:
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if (state.flags & Common::KBD_NUM) {
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defaultKeyDownHandler(state);
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break;
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}
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case Common::KEYCODE_PAGEUP:
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if (state.hasFlags(Common::KBD_SHIFT)) {
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_scrollLine -= _linesPerPage - 1;
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if (_scrollLine < _firstLineInBuffer + _linesPerPage - 1)
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_scrollLine = _firstLineInBuffer + _linesPerPage - 1;
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updateScrollBuffer();
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draw();
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}
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break;
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default:
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defaultKeyDownHandler(state);
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}
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}
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void ConsoleDialog::defaultKeyDownHandler(Common::KeyState &state) {
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if (state.ascii == '~' || state.ascii == '#') {
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slideUpAndClose();
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} else if (state.hasFlags(Common::KBD_CTRL)) {
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specialKeys(state.keycode);
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} else if ((state.ascii >= 32 && state.ascii <= 127) || (state.ascii >= 160 && state.ascii <= 255)) {
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for (int i = _promptEndPos - 1; i >= _currentPos; i--)
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buffer(i + 1) = buffer(i);
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_promptEndPos++;
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putchar((byte)state.ascii);
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scrollToCurrent();
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}
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}
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void ConsoleDialog::insertIntoPrompt(const char* str) {
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unsigned int l = strlen(str);
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for (int i = _promptEndPos - 1; i >= _currentPos; i--)
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buffer(i + l) = buffer(i);
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for (unsigned int j = 0; j < l; ++j) {
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_promptEndPos++;
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putcharIntern(str[j]);
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}
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}
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void ConsoleDialog::handleCommand(CommandSender *sender, uint32 cmd, uint32 data) {
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switch (cmd) {
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case kSetPositionCmd:
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int newPos = (int)data + _linesPerPage - 1 + _firstLineInBuffer;
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if (newPos != _scrollLine) {
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_scrollLine = newPos;
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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 ConsoleDialog::specialKeys(int keycode) {
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switch (keycode) {
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case Common::KEYCODE_a:
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_currentPos = _promptStartPos;
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draw();
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break;
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case Common::KEYCODE_d:
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if (_currentPos < _promptEndPos) {
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killChar();
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draw();
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}
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break;
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case Common::KEYCODE_e:
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_currentPos = _promptEndPos;
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draw();
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break;
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case Common::KEYCODE_k:
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killLine();
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draw();
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break;
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case Common::KEYCODE_w:
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killLastWord();
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draw();
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break;
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}
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}
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void ConsoleDialog::killChar() {
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|
for (int i = _currentPos; i < _promptEndPos; i++)
|
|
buffer(i) = buffer(i + 1);
|
|
if (_promptEndPos > _promptStartPos) {
|
|
buffer(_promptEndPos) = ' ';
|
|
_promptEndPos--;
|
|
}
|
|
}
|
|
|
|
void ConsoleDialog::killLine() {
|
|
for (int i = _currentPos; i < _promptEndPos; i++)
|
|
buffer(i) = ' ';
|
|
_promptEndPos = _currentPos;
|
|
}
|
|
|
|
void ConsoleDialog::killLastWord() {
|
|
int cnt = 0;
|
|
bool space = true;
|
|
while (_currentPos > _promptStartPos) {
|
|
if (buffer(_currentPos - 1) == ' ') {
|
|
if (!space)
|
|
break;
|
|
} else
|
|
space = false;
|
|
_currentPos--;
|
|
cnt++;
|
|
}
|
|
|
|
for (int i = _currentPos; i < _promptEndPos; i++)
|
|
buffer(i) = buffer(i + cnt);
|
|
if (_promptEndPos > _promptStartPos) {
|
|
buffer(_promptEndPos) = ' ';
|
|
_promptEndPos -= cnt;
|
|
}
|
|
}
|
|
|
|
void ConsoleDialog::addToHistory(const char *str) {
|
|
strcpy(_history[_historyIndex], str);
|
|
_historyIndex = (_historyIndex + 1) % kHistorySize;
|
|
_historyLine = 0;
|
|
if (_historySize < kHistorySize)
|
|
_historySize++;
|
|
}
|
|
|
|
void ConsoleDialog::historyScroll(int direction) {
|
|
if (_historySize == 0)
|
|
return;
|
|
|
|
if (_historyLine == 0 && direction > 0) {
|
|
int i;
|
|
for (i = 0; i < _promptEndPos - _promptStartPos; i++)
|
|
_history[_historyIndex][i] = buffer(_promptStartPos + i);
|
|
_history[_historyIndex][i] = '\0';
|
|
}
|
|
|
|
// Advance to the next line in the history
|
|
int line = _historyLine + direction;
|
|
if ((direction < 0 && line < 0) || (direction > 0 && line > _historySize))
|
|
return;
|
|
_historyLine = line;
|
|
|
|
// Hide caret if visible
|
|
if (_caretVisible)
|
|
drawCaret(true);
|
|
|
|
// Remove the current user text
|
|
_currentPos = _promptStartPos;
|
|
killLine();
|
|
|
|
// ... and ensure the prompt is visible
|
|
scrollToCurrent();
|
|
|
|
// Print the text from the history
|
|
int idx;
|
|
if (_historyLine > 0)
|
|
idx = (_historyIndex - _historyLine + _historySize) % _historySize;
|
|
else
|
|
idx = _historyIndex;
|
|
for (int i = 0; i < kLineBufferSize && _history[idx][i] != '\0'; i++)
|
|
putcharIntern(_history[idx][i]);
|
|
_promptEndPos = _currentPos;
|
|
|
|
// Ensure once more the caret is visible (in case of very long history entries)
|
|
scrollToCurrent();
|
|
|
|
draw();
|
|
}
|
|
|
|
void ConsoleDialog::nextLine() {
|
|
int line = _currentPos / kCharsPerLine;
|
|
if (line == _scrollLine)
|
|
_scrollLine++;
|
|
_currentPos = (line + 1) * kCharsPerLine;
|
|
|
|
updateScrollBuffer();
|
|
}
|
|
|
|
|
|
// Call this (at least) when the current line changes or when
|
|
// a new line is added
|
|
void ConsoleDialog::updateScrollBuffer() {
|
|
int lastchar = MAX(_promptEndPos, _currentPos);
|
|
int line = lastchar / kCharsPerLine;
|
|
int numlines = (line < _linesInBuffer) ? line + 1 : _linesInBuffer;
|
|
int firstline = line - numlines + 1;
|
|
if (firstline > _firstLineInBuffer) {
|
|
// clear old line from buffer
|
|
for (int i = lastchar; i < (line+1) * kCharsPerLine; ++i)
|
|
buffer(i) = ' ';
|
|
_firstLineInBuffer = firstline;
|
|
}
|
|
|
|
_scrollBar->_numEntries = numlines;
|
|
_scrollBar->_currentPos = _scrollBar->_numEntries - (line - _scrollLine + _linesPerPage);
|
|
_scrollBar->_entriesPerPage = _linesPerPage;
|
|
_scrollBar->recalc();
|
|
}
|
|
|
|
int ConsoleDialog::printf(const char *format, ...) {
|
|
va_list argptr;
|
|
|
|
va_start(argptr, format);
|
|
int count = this->vprintf(format, argptr);
|
|
va_end (argptr);
|
|
return count;
|
|
}
|
|
|
|
int ConsoleDialog::vprintf(const char *format, va_list argptr) {
|
|
#ifdef PALMOS_MODE
|
|
char buf[256];
|
|
#else
|
|
char buf[2048];
|
|
#endif
|
|
|
|
#if defined(WIN32)
|
|
int count = _vsnprintf(buf, sizeof(buf), format, argptr);
|
|
#elif defined(__SYMBIAN32__)
|
|
int count = vsprintf(buf, format, argptr);
|
|
#else
|
|
int count = vsnprintf(buf, sizeof(buf), format, argptr);
|
|
#endif
|
|
print(buf);
|
|
return count;
|
|
}
|
|
|
|
void ConsoleDialog::putchar(int c) {
|
|
if (_caretVisible)
|
|
drawCaret(true);
|
|
|
|
putcharIntern(c);
|
|
drawLine(pos2line(_currentPos));
|
|
}
|
|
|
|
void ConsoleDialog::putcharIntern(int c) {
|
|
if (c == '\n')
|
|
nextLine();
|
|
else {
|
|
buffer(_currentPos) = (char)c;
|
|
_currentPos++;
|
|
if ((_scrollLine + 1) * kCharsPerLine == _currentPos) {
|
|
_scrollLine++;
|
|
updateScrollBuffer();
|
|
}
|
|
}
|
|
}
|
|
|
|
void ConsoleDialog::print(const char *str) {
|
|
if (_caretVisible)
|
|
drawCaret(true);
|
|
|
|
while (*str)
|
|
putcharIntern(*str++);
|
|
|
|
draw();
|
|
}
|
|
|
|
void ConsoleDialog::drawCaret(bool erase) {
|
|
// TODO: use code from EditableWidget::drawCaret here
|
|
int line = _currentPos / kCharsPerLine;
|
|
int displayLine = line - _scrollLine + _linesPerPage - 1;
|
|
|
|
// Only draw caret if visible
|
|
if (!isVisible() || displayLine < 0 || displayLine >= _linesPerPage) {
|
|
_caretVisible = false;
|
|
return;
|
|
}
|
|
|
|
int x = _x + 1 + _leftPadding + (_currentPos % kCharsPerLine) * kConsoleCharWidth;
|
|
int y = _y + _topPadding + displayLine * kConsoleLineHeight;
|
|
|
|
_caretVisible = !erase;
|
|
g_gui.theme()->drawCaret(Common::Rect(x, y, x+1, y+kConsoleLineHeight), erase);
|
|
}
|
|
|
|
void ConsoleDialog::scrollToCurrent() {
|
|
int line = _promptEndPos / kCharsPerLine;
|
|
|
|
if (line + _linesPerPage <= _scrollLine) {
|
|
// TODO - this should only occur for loong edit lines, though
|
|
} else if (line > _scrollLine) {
|
|
_scrollLine = line;
|
|
updateScrollBuffer();
|
|
draw();
|
|
}
|
|
}
|
|
|
|
} // End of namespace GUI
|