mirror of
https://github.com/libretro/scummvm.git
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328 lines
9.0 KiB
C++
328 lines
9.0 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2002-2005 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 "common/stdafx.h"
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#include "base/engine.h"
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#include "base/version.h"
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#include "common/system.h"
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#include "common/util.h"
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#include "gui/about.h"
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#include "gui/newgui.h"
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#include "gui/widget.h"
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namespace GUI {
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enum {
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kScrollStartDelay = 1500,
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kScrollMillisPerPixel = 80
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};
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// The following commands can be put at the start of a line (all subject to change):
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// \C, \L, \R -- set center/left/right alignment
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// \c0 - \c4 -- set a custom color:
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// 0 normal text (green)
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// 1 highlighted text (light green)
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// 2 light border (light gray)
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// 3 dark border (dark gray)
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// 4 background (black)
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// TODO: Maybe add a tab/indent feature; that is, make it possible to specify
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// an amount by which that line shall be indented (the indent of course would have
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// to be considered while performing any word wrapping, too).
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static const char *credits_intro[] = {
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"\\C""Copyright (C) 2002-2005 The ScummVM project",
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"\\C""http://www.scummvm.org",
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"\\C""",
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"\\C""LucasArts SCUMM Games (C) LucasArts",
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"\\C""Humongous SCUMM Games (C) Humongous",
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"\\C""Simon the Sorcerer (C) Adventure Soft",
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"\\C""Beneath a Steel Sky (C) Revolution",
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"\\C""Broken Sword Games (C) Revolution",
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"\\C""Flight of the Amazon Queen (C) John Passfield",
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"\\C""and Steve Stamatiadis",
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"\\C""",
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"\\C""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.",
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"\\C""",
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"\\C""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.",
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"\\C""",
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"\\C""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.",
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"\\C"""
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};
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#include "gui/credits.h"
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AboutDialog::AboutDialog()
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: Dialog(10, 20, 300, 174),
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_scrollPos(0), _scrollTime(0), _modifiers(0), _willClose(false) {
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int i;
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const int screenW = g_system->getOverlayWidth();
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const int screenH = g_system->getOverlayHeight();
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int outerBorder;
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if (screenW >= 400 && screenH >= 300) {
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xOff = 8;
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yOff = 5;
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outerBorder = 80;
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} else {
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xOff = 3;
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yOff = 2;
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outerBorder = 10;
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}
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_w = screenW - 2 * outerBorder;
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_h = screenH - 2 * outerBorder;
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_lineHeight = g_gui.getFontHeight() + 3;
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// Heuristic to compute 'optimal' dialog width
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int maxW = _w - 2*xOff;
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_w = 0;
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for (i = 0; i < ARRAYSIZE(credits); i++) {
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int tmp = g_gui.getStringWidth(credits[i] + 5);
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if ( _w < tmp && tmp <= maxW) {
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_w = tmp;
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}
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}
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_w += 2*xOff;
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for (i = 0; i < 1; i++)
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_lines.push_back("");
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Common::String version("\\C\\c0""ScummVM ");
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version += gScummVMVersion;
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_lines.push_back(version);
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Common::String date("\\C\\c2""(built on ");
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date += gScummVMBuildDate;
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date += ')';
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_lines.push_back(date);
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Common::String features("\\C\\c2""Supports: ");
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features += gScummVMFeatures;
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addLine(features.c_str());
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_lines.push_back("");
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for (i = 0; i < ARRAYSIZE(credits_intro); i++)
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addLine(credits_intro[i]);
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for (i = 0; i < ARRAYSIZE(credits); i++)
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addLine(credits[i]);
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// Center the dialog
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_x = (screenW - _w) / 2;
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_y = (screenH - _h) / 2;
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}
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void AboutDialog::addLine(const char *str) {
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// Extract formatting instructions
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Common::String format;
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while (*str == '\\') {
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format += *str++;
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switch (*str) {
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case 'C':
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case 'L':
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case 'R':
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format += *str++;
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break;
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case 'c':
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format += *str++;
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format += *str++;
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break;
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default:
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error("Unknown scroller opcode '%c'\n", *str);
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break;
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}
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}
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if (*str == 0) {
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_lines.push_back(format);
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} else {
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Common::StringList wrappedLines;
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g_gui.getFont().wordWrapText(str, _w - 2*xOff, wrappedLines);
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for (Common::StringList::const_iterator i = wrappedLines.begin(); i != wrappedLines.end(); ++i) {
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_lines.push_back(format + *i);
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}
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}
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}
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void AboutDialog::open() {
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_scrollTime = getMillis() + kScrollStartDelay;
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_scrollPos = 0;
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_modifiers = 0;
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_willClose = false;
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_canvas.pixels = NULL;
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Dialog::open();
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}
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void AboutDialog::close() {
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free(_canvas.pixels);
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Dialog::close();
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}
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void AboutDialog::drawDialog() {
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if (!_canvas.pixels) {
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// Blend over the background. Since we can't afford to do that
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// every time the text is updated (it's horribly CPU intensive)
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// we do it just once and then use a copy of the result as our
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// static background for the remainder of the credits.
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g_gui.blendRect(_x, _y, _w, _h, g_gui._bgcolor);
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g_gui.copyToSurface(&_canvas, _x, _y, _w, _h);
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}
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g_gui.drawSurface(_canvas, _x, _y);
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// Draw text
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// TODO: Add a "fade" effect for the top/bottom text lines
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// TODO: Maybe prerender all of the text into another surface,
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// and then simply compose that over the screen surface
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// in the right way. Should be even faster...
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const int firstLine = _scrollPos / _lineHeight;
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const int lastLine = MIN((_scrollPos + _h) / _lineHeight + 1, (uint32)_lines.size());
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int y = _y + yOff - (_scrollPos % _lineHeight);
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for (int line = firstLine; line < lastLine; line++) {
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const char *str = _lines[line].c_str();
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Graphics::TextAlignment align = Graphics::kTextAlignCenter;
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OverlayColor color = g_gui._textcolor;
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while (str[0] == '\\') {
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switch (str[1]) {
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case 'C':
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align = Graphics::kTextAlignCenter;
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break;
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case 'L':
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align = Graphics::kTextAlignLeft;
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break;
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case 'R':
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align = Graphics::kTextAlignRight;
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break;
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case 'c':
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switch (str[2]) {
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case '0':
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color = g_gui._textcolor;
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break;
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case '1':
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color = g_gui._textcolorhi;
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break;
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case '2':
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color = g_gui._color;
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break;
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case '3':
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color = g_gui._shadowcolor;
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break;
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case '4':
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color = g_gui._bgcolor;
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break;
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default:
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error("Unknown color type '%c'", str[2]);
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}
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str++;
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break;
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default:
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error("Unknown scroller opcode '%c'\n", str[1]);
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break;
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}
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str += 2;
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}
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// Trim leading whitespaces if center mode is on
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if (align == Graphics::kTextAlignCenter)
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while (*str && *str == ' ')
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str++;
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g_gui.drawString(str, _x + xOff, y, _w - 2 * xOff, color, align, 0, false);
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y += _lineHeight;
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}
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// Draw a border
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g_gui.box(_x, _y, _w, _h, g_gui._color, g_gui._shadowcolor);
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// Finally blit it all to the screen
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g_gui.addDirtyRect(_x, _y, _w, _h);
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}
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void AboutDialog::handleTickle() {
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// We're in the process of doing a full redraw to re-create the
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// background image for the text. That means we need to wait for the
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// GUI itself to clear the overlay and call drawDialog() in all of the
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// dialogs, otherwise we'll only redraw this one and it'll still have
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// the remains of the old image, including the text that was on it.
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if (!_canvas.pixels)
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return;
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const uint32 t = getMillis();
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int scrollOffset = ((int)t - (int)_scrollTime) / kScrollMillisPerPixel;
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if (scrollOffset > 0) {
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// Scroll faster when shift is pressed
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if (_modifiers & OSystem::KBD_SHIFT)
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scrollOffset *= 4;
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// Reverse scrolling when alt is pressed
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if (_modifiers & OSystem::KBD_ALT)
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scrollOffset *= -1;
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_scrollPos += scrollOffset;
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_scrollTime = t;
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if (_scrollPos < 0) {
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_scrollPos = 0;
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} else if ((uint32)_scrollPos > _lines.size() * _lineHeight) {
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_scrollPos = 0;
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_scrollTime += kScrollStartDelay;
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}
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drawDialog();
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}
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}
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void AboutDialog::handleScreenChanged() {
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// The screen has changed. That means the overlay colors in the canvas
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// may no longer be correct. Reset it, and issue a full redraw.
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// TODO: We could check if the bit format has changed, like we do in
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// the MPEG player.
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free(_canvas.pixels);
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_canvas.pixels = NULL;
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draw();
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}
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void AboutDialog::handleMouseUp(int x, int y, int button, int clickCount) {
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// Close upon any mouse click
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close();
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}
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void AboutDialog::handleKeyDown(uint16 ascii, int keycode, int modifiers) {
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_modifiers = modifiers;
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if (ascii)
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_willClose = true;
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}
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void AboutDialog::handleKeyUp(uint16 ascii, int keycode, int modifiers) {
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_modifiers = modifiers;
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if (ascii && _willClose)
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close();
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}
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} // End of namespace GUI
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