scummvm/gui/about.cpp
2015-01-18 02:24:51 +00:00

322 lines
9.2 KiB
C++

/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "engines/metaengine.h"
#include "base/plugins.h"
#include "base/version.h"
#include "common/events.h"
#include "common/system.h"
#include "common/translation.h"
#include "common/util.h"
#include "gui/about.h"
#include "gui/gui-manager.h"
#include "gui/ThemeEval.h"
namespace GUI {
enum {
kScrollStartDelay = 1500,
kScrollMillisPerPixel = 60
};
// Every Line should start with a letter followed by a digit. Currently those can be
// (all subject to change)
// Letter:
// C, L, R -- set center/left/right alignment
// A -- ASCII text to replace the next (latin1) line
// Digit:
// 0 - 2 -- set a custom color:
// 0 normal text
// 1 highlighted text
// 2 disabled text
// TODO: Maybe add a tab/indent feature; that is, make it possible to specify
// an amount by which that line shall be indented (the indent of course would have
// to be considered while performing any word wrapping, too).
//
// TODO: Add different font sizes (for bigger headlines)
// TODO: Allow color change in the middle of a line...
static const char *copyright_text[] = {
"",
"C0""Copyright (C) 2001-2015 The ScummVM Team",
"C0""http://www.scummvm.org",
"",
"C0""ScummVM is the legal property of its developers, whose names are too numerous to list here. Please refer to the COPYRIGHT file distributed with this binary.",
"",
};
static const char *gpl_text[] = {
"",
"C0""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.",
"C0""",
"C0""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.",
"",
"C0""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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.",
"",
};
#include "gui/credits.h"
AboutDialog::AboutDialog()
: Dialog(10, 20, 300, 174),
_scrollPos(0), _scrollTime(0), _willClose(false) {
reflowLayout();
int i;
for (i = 0; i < 1; i++)
_lines.push_back("");
Common::String version("C0""ScummVM ");
version += gScummVMVersion;
_lines.push_back(version);
Common::String date = Common::String::format(_("(built on %s)"), gScummVMBuildDate);
_lines.push_back("C2" + date);
for (i = 0; i < ARRAYSIZE(copyright_text); i++)
addLine(copyright_text[i]);
Common::String features("C1");
features += _("Features compiled in:");
addLine(features.c_str());
Common::String featureList("C0");
featureList += gScummVMFeatures;
addLine(featureList.c_str());
_lines.push_back("");
Common::String engines("C1");
engines += _("Available engines:");
addLine(engines.c_str());
const EnginePlugin::List &plugins = EngineMan.getPlugins();
EnginePlugin::List::const_iterator iter = plugins.begin();
for (; iter != plugins.end(); ++iter) {
Common::String str;
str = "C0";
str += (**iter).getName();
addLine(str.c_str());
str = "C2";
str += (**iter)->getOriginalCopyright();
addLine(str.c_str());
//addLine("");
}
for (i = 0; i < ARRAYSIZE(gpl_text); i++)
addLine(gpl_text[i]);
_lines.push_back("");
for (i = 0; i < ARRAYSIZE(credits); i++)
addLine(credits[i]);
}
void AboutDialog::addLine(const char *str) {
if (*str == 0) {
_lines.push_back("");
} else {
Common::String format(str, 2);
str += 2;
static Common::String asciiStr;
if (format[0] == 'A') {
bool useAscii = false;
#ifdef USE_TRANSLATION
// We could use TransMan.getCurrentCharset() but rather than compare strings
// it is easier to use TransMan.getCharsetMapping() (non null in case of non
// ISO-8859-1 mapping)
useAscii = (TransMan.getCharsetMapping() != NULL);
#endif
if (useAscii)
asciiStr = str;
return;
}
StringArray wrappedLines;
if (!asciiStr.empty()) {
g_gui.getFont().wordWrapText(asciiStr, _w - 2 * _xOff, wrappedLines);
asciiStr.clear();
} else
g_gui.getFont().wordWrapText(str, _w - 2 * _xOff, wrappedLines);
for (StringArray::const_iterator i = wrappedLines.begin(); i != wrappedLines.end(); ++i) {
_lines.push_back(format + *i);
}
}
}
void AboutDialog::open() {
_scrollTime = g_system->getMillis() + kScrollStartDelay;
_scrollPos = 0;
_willClose = false;
Dialog::open();
}
void AboutDialog::close() {
Dialog::close();
}
void AboutDialog::drawDialog() {
Dialog::drawDialog();
setTextDrawableArea(Common::Rect(_x, _y, _x + _w, _y + _h));
// Draw text
// TODO: Add a "fade" effect for the top/bottom text lines
// TODO: Maybe prerender all of the text into another surface,
// and then simply compose that over the screen surface
// in the right way. Should be even faster...
const int firstLine = _scrollPos / _lineHeight;
const int lastLine = MIN((_scrollPos + _h) / _lineHeight + 1, (uint32)_lines.size());
int y = _y + _yOff - (_scrollPos % _lineHeight);
for (int line = firstLine; line < lastLine; line++) {
const char *str = _lines[line].c_str();
Graphics::TextAlign align = Graphics::kTextAlignCenter;
ThemeEngine::WidgetStateInfo state = ThemeEngine::kStateEnabled;
if (*str) {
switch (str[0]) {
case 'C':
align = Graphics::kTextAlignCenter;
break;
case 'L':
align = Graphics::kTextAlignLeft;
break;
case 'R':
align = Graphics::kTextAlignRight;
break;
default:
error("Unknown scroller opcode '%c'", str[0]);
break;
}
switch (str[1]) {
case '0':
state = ThemeEngine::kStateEnabled;
break;
case '1':
state = ThemeEngine::kStateHighlight;
break;
case '2':
state = ThemeEngine::kStateDisabled;
break;
case '3':
warning("Need state for color 3");
// color = g_gui._shadowcolor;
break;
case '4':
warning("Need state for color 4");
// color = g_gui._bgcolor;
break;
default:
error("Unknown color type '%c'", str[1]);
}
str += 2;
}
// Trim leading whitespaces if center mode is on
if (align == Graphics::kTextAlignCenter)
while (*str && *str == ' ')
str++;
if (*str)
g_gui.theme()->drawText(Common::Rect(_x + _xOff, y, _x + _w - _xOff, y + g_gui.theme()->getFontHeight()), str, state, align, ThemeEngine::kTextInversionNone, 0, false, ThemeEngine::kFontStyleBold, ThemeEngine::kFontColorNormal, true, _textDrawableArea);
y += _lineHeight;
}
}
void AboutDialog::handleTickle() {
const uint32 t = g_system->getMillis();
int scrollOffset = ((int)t - (int)_scrollTime) / kScrollMillisPerPixel;
if (scrollOffset > 0) {
int modifiers = g_system->getEventManager()->getModifierState();
// Scroll faster when shift is pressed
if (modifiers & Common::KBD_SHIFT)
scrollOffset *= 4;
// Reverse scrolling when alt is pressed
if (modifiers & Common::KBD_ALT)
scrollOffset *= -1;
_scrollPos += scrollOffset;
_scrollTime = t;
if (_scrollPos < 0) {
_scrollPos = 0;
} else if ((uint32)_scrollPos > _lines.size() * _lineHeight) {
_scrollPos = 0;
_scrollTime += kScrollStartDelay;
}
drawDialog();
}
}
void AboutDialog::handleMouseUp(int x, int y, int button, int clickCount) {
// Close upon any mouse click
close();
}
void AboutDialog::handleKeyDown(Common::KeyState state) {
if (state.ascii)
_willClose = true;
}
void AboutDialog::handleKeyUp(Common::KeyState state) {
if (state.ascii && _willClose)
close();
}
void AboutDialog::reflowLayout() {
Dialog::reflowLayout();
int i;
const int screenW = g_system->getOverlayWidth();
const int screenH = g_system->getOverlayHeight();
_xOff = g_gui.xmlEval()->getVar("Globals.About.XOffset", 5);
_yOff = g_gui.xmlEval()->getVar("Globals.About.YOffset", 5);
int outerBorder = g_gui.xmlEval()->getVar("Globals.About.OuterBorder");
_w = screenW - 2 * outerBorder;
_h = screenH - 2 * outerBorder;
_lineHeight = g_gui.getFontHeight() + 3;
// Heuristic to compute 'optimal' dialog width
int maxW = _w - 2*_xOff;
_w = 0;
for (i = 0; i < ARRAYSIZE(credits); i++) {
int tmp = g_gui.getStringWidth(credits[i]) + 5;
if (_w < tmp && tmp <= maxW) {
_w = tmp;
}
}
_w += 2*_xOff;
// Center the dialog
_x = (screenW - _w) / 2;
_y = (screenH - _h) / 2;
}
} // End of namespace GUI