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ThemeEngine.cpp
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ThemeEngine.cpp
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/* 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 "common/system.h"
#include "common/config-manager.h"
#include "common/file.h"
#include "common/fs.h"
#include "common/unzip.h"
#include "common/tokenizer.h"
#include "common/translation.h"
#include "graphics/cursorman.h"
#include "graphics/fontman.h"
#include "graphics/surface.h"
#include "graphics/transparent_surface.h"
#include "graphics/VectorRenderer.h"
#include "graphics/fonts/bdf.h"
#include "graphics/fonts/ttf.h"
#include "image/bmp.h"
#include "image/png.h"
#include "gui/widget.h"
#include "gui/ThemeEngine.h"
#include "gui/ThemeEval.h"
#include "gui/ThemeParser.h"
namespace GUI {
const char *const ThemeEngine::kImageLogo = "logo.bmp";
const char *const ThemeEngine::kImageLogoSmall = "logo_small.bmp";
const char *const ThemeEngine::kImageSearch = "search.bmp";
const char *const ThemeEngine::kImageEraser = "eraser.bmp";
const char *const ThemeEngine::kImageDelButton = "delbtn.bmp";
const char *const ThemeEngine::kImageList = "list.bmp";
const char *const ThemeEngine::kImageGrid = "grid.bmp";
const char *const ThemeEngine::kImageStopButton = "stopbtn.bmp";
const char *const ThemeEngine::kImageEditButton = "editbtn.bmp";
const char *const ThemeEngine::kImageSwitchModeButton = "switchbtn.bmp";
const char *const ThemeEngine::kImageFastReplayButton = "fastreplay.bmp";
const char *const ThemeEngine::kImageStopSmallButton = "stopbtn_small.bmp";
const char *const ThemeEngine::kImageEditSmallButton = "editbtn_small.bmp";
const char *const ThemeEngine::kImageSwitchModeSmallButton = "switchbtn_small.bmp";
const char *const ThemeEngine::kImageFastReplaySmallButton = "fastreplay_small.bmp";
const char *const ThemeEngine::kImageDropboxLogo = "dropbox.bmp";
const char *const ThemeEngine::kImageOneDriveLogo = "onedrive.bmp";
const char *const ThemeEngine::kImageGoogleDriveLogo = "googledrive.bmp";
const char *const ThemeEngine::kImageBoxLogo = "box.bmp";
struct TextDrawData {
const Graphics::Font *_fontPtr;
};
struct TextColorData {
int r, g, b;
};
struct WidgetDrawData {
/** List of all the steps needed to draw this widget */
Common::List<Graphics::DrawStep> _steps;
TextData _textDataId;
TextColor _textColorId;
Graphics::TextAlign _textAlignH;
GUI::ThemeEngine::TextAlignVertical _textAlignV;
/** Extra space that the widget occupies when it's drawn.
E.g. when taking into account rounded corners, drop shadows, etc
Used when restoring the widget background */
uint16 _backgroundOffset;
uint16 _shadowOffset;
DrawLayer _layer;
/**
* Calculates the background threshold offset of a given DrawData item.
* After fully loading all DrawSteps of a DrawData item, this function must be
* called in order to calculate if such draw steps would be drawn outside of
* the actual widget drawing zone (e.g. shadows). If this is the case, a constant
* value will be added when restoring the background of the widget.
*/
void calcBackgroundOffset();
};
/**********************************************************
* Data definitions for theme engine elements
*********************************************************/
struct DrawDataInfo {
DrawData id; ///< The actual ID of the DrawData item.
const char *name; ///< The name of the DrawData item as it appears in the Theme Description files
DrawLayer layer; ///< Sets whether this item is part of the foreground or background layer of its dialog
DrawData parent; ///< Parent DrawData item, for items that overlay. E.g. kDDButtonIdle -> kDDButtonHover
};
/**
* Default values for each DrawData item.
*/
static const DrawDataInfo kDrawDataDefaults[] = {
{kDDMainDialogBackground, "mainmenu_bg", kDrawLayerBackground, kDDNone},
{kDDSpecialColorBackground, "special_bg", kDrawLayerBackground, kDDNone},
{kDDPlainColorBackground, "plain_bg", kDrawLayerBackground, kDDNone},
{kDDTooltipBackground, "tooltip_bg", kDrawLayerBackground, kDDNone},
{kDDDefaultBackground, "default_bg", kDrawLayerBackground, kDDNone},
{kDDTextSelectionBackground, "text_selection", kDrawLayerForeground, kDDNone},
{kDDTextSelectionFocusBackground, "text_selection_focus", kDrawLayerForeground, kDDNone},
{kDDWidgetBackgroundDefault, "widget_default", kDrawLayerBackground, kDDNone},
{kDDWidgetBackgroundSmall, "widget_small", kDrawLayerBackground, kDDNone},
{kDDWidgetBackgroundEditText, "widget_textedit", kDrawLayerBackground, kDDNone},
{kDDWidgetBackgroundSlider, "widget_slider", kDrawLayerBackground, kDDNone},
{kDDButtonIdle, "button_idle", kDrawLayerBackground, kDDNone},
{kDDButtonHover, "button_hover", kDrawLayerForeground, kDDButtonIdle},
{kDDButtonDisabled, "button_disabled", kDrawLayerBackground, kDDNone},
{kDDButtonPressed, "button_pressed", kDrawLayerForeground, kDDButtonIdle},
{kDDSliderFull, "slider_full", kDrawLayerForeground, kDDNone},
{kDDSliderHover, "slider_hover", kDrawLayerForeground, kDDNone},
{kDDSliderDisabled, "slider_disabled", kDrawLayerForeground, kDDNone},
{kDDCheckboxDefault, "checkbox_default", kDrawLayerBackground, kDDNone},
{kDDCheckboxDisabled, "checkbox_disabled", kDrawLayerBackground, kDDNone},
{kDDCheckboxSelected, "checkbox_selected", kDrawLayerForeground, kDDCheckboxDefault},
{kDDRadiobuttonDefault, "radiobutton_default", kDrawLayerBackground, kDDNone},
{kDDRadiobuttonDisabled, "radiobutton_disabled", kDrawLayerBackground, kDDNone},
{kDDRadiobuttonSelected, "radiobutton_selected", kDrawLayerForeground, kDDRadiobuttonDefault},
{kDDTabActive, "tab_active", kDrawLayerForeground, kDDTabInactive},
{kDDTabInactive, "tab_inactive", kDrawLayerBackground, kDDNone},
{kDDTabBackground, "tab_background", kDrawLayerBackground, kDDNone},
{kDDScrollbarBase, "scrollbar_base", kDrawLayerBackground, kDDNone},
{kDDScrollbarButtonIdle, "scrollbar_button_idle", kDrawLayerBackground, kDDNone},
{kDDScrollbarButtonHover, "scrollbar_button_hover", kDrawLayerForeground, kDDScrollbarButtonIdle},
{kDDScrollbarHandleIdle, "scrollbar_handle_idle", kDrawLayerForeground, kDDNone},
{kDDScrollbarHandleHover, "scrollbar_handle_hover", kDrawLayerForeground, kDDScrollbarBase},
{kDDPopUpIdle, "popup_idle", kDrawLayerBackground, kDDNone},
{kDDPopUpHover, "popup_hover", kDrawLayerForeground, kDDPopUpIdle},
{kDDPopUpDisabled, "popup_disabled", kDrawLayerBackground, kDDNone},
{kDDCaret, "caret", kDrawLayerForeground, kDDNone},
{kDDSeparator, "separator", kDrawLayerBackground, kDDNone},
};
/**********************************************************
* ThemeEngine class
*********************************************************/
ThemeEngine::ThemeEngine(Common::String id, GraphicsMode mode) :
_system(0), _vectorRenderer(0),
_layerToDraw(kDrawLayerBackground), _bytesPerPixel(0), _graphicsMode(kGfxDisabled),
_font(0), _initOk(false), _themeOk(false), _enabled(false), _themeFiles(),
_cursor(0) {
_system = g_system;
_parser = new ThemeParser(this);
_themeEval = new GUI::ThemeEval();
_useCursor = false;
for (int i = 0; i < kDrawDataMAX; ++i) {
_widgets[i] = 0;
}
for (int i = 0; i < kTextDataMAX; ++i) {
_texts[i] = 0;
}
for (int i = 0; i < kTextColorMAX; ++i) {
_textColors[i] = 0;
}
// We currently allow two different ways of theme selection in our config file:
// 1) Via full path
// 2) Via a basename, which will need to be translated into a full path
// This function assures we have a correct path to pass to the ThemeEngine
// constructor.
_themeFile = getThemeFile(id);
// We will use getThemeId to retrive the theme id from the given filename
// here, since the user could have passed a fixed filename as 'id'.
_themeId = getThemeId(_themeFile);
_graphicsMode = mode;
_themeArchive = 0;
_initOk = false;
_cursorHotspotX = _cursorHotspotY = 0;
_cursorWidth = _cursorHeight = 0;
_cursorPalSize = 0;
// We prefer files in archive bundles over the common search paths.
_themeFiles.add("default", &SearchMan, 0, false);
}
ThemeEngine::~ThemeEngine() {
delete _vectorRenderer;
_vectorRenderer = 0;
_screen.free();
_backBuffer.free();
unloadTheme();
// Release all graphics surfaces
for (ImagesMap::iterator i = _bitmaps.begin(); i != _bitmaps.end(); ++i) {
Graphics::Surface *surf = i->_value;
if (surf) {
surf->free();
delete surf;
}
}
_bitmaps.clear();
for (AImagesMap::iterator i = _abitmaps.begin(); i != _abitmaps.end(); ++i) {
Graphics::TransparentSurface *surf = i->_value;
if (surf) {
surf->free();
delete surf;
}
}
_abitmaps.clear();
delete _parser;
delete _themeEval;
delete[] _cursor;
}
/**********************************************************
* Rendering mode management
*********************************************************/
const ThemeEngine::Renderer ThemeEngine::_rendererModes[] = {
{ _s("Disabled GFX"), _sc("Disabled GFX", "lowres"), "none", kGfxDisabled },
{ _s("Standard Renderer"), _s("Standard"), "normal", kGfxStandard },
#ifndef DISABLE_FANCY_THEMES
{ _s("Antialiased Renderer"), _s("Antialiased"), "antialias", kGfxAntialias }
#endif
};
const uint ThemeEngine::_rendererModesSize = ARRAYSIZE(ThemeEngine::_rendererModes);
const ThemeEngine::GraphicsMode ThemeEngine::_defaultRendererMode =
#ifndef DISABLE_FANCY_THEMES
ThemeEngine::kGfxAntialias;
#else
ThemeEngine::kGfxStandard;
#endif
ThemeEngine::GraphicsMode ThemeEngine::findMode(const Common::String &cfg) {
for (uint i = 0; i < _rendererModesSize; ++i) {
if (cfg.equalsIgnoreCase(_rendererModes[i].cfg))
return _rendererModes[i].mode;
}
return kGfxDisabled;
}
const char *ThemeEngine::findModeConfigName(GraphicsMode mode) {
for (uint i = 0; i < _rendererModesSize; ++i) {
if (mode == _rendererModes[i].mode)
return _rendererModes[i].cfg;
}
return findModeConfigName(kGfxDisabled);
}
/**********************************************************
* Theme setup/initialization
*********************************************************/
bool ThemeEngine::init() {
// reset everything and reload the graphics
_initOk = false;
_overlayFormat = _system->getOverlayFormat();
setGraphicsMode(_graphicsMode);
if (_screen.getPixels() && _backBuffer.getPixels()) {
_initOk = true;
}
// TODO: Instead of hard coding the font here, it should be possible
// to specify the fonts to be used for each resolution in the theme XML.
if (_screen.w >= 400 && _screen.h >= 300) {
_font = FontMan.getFontByUsage(Graphics::FontManager::kBigGUIFont);
} else {
_font = FontMan.getFontByUsage(Graphics::FontManager::kGUIFont);
}
// Try to create a Common::Archive with the files of the theme.
if (!_themeArchive && !_themeFile.empty()) {
Common::FSNode node(_themeFile);
if (node.isDirectory()) {
_themeArchive = new Common::FSDirectory(node);
} else if (_themeFile.matchString("*.zip", true)) {
// TODO: Also use "node" directly?
// Look for the zip file via SearchMan
Common::ArchiveMemberPtr member = SearchMan.getMember(_themeFile);
if (member) {
_themeArchive = Common::makeZipArchive(member->createReadStream());
if (!_themeArchive) {
warning("Failed to open Zip archive '%s'.", member->getDisplayName().c_str());
}
} else {
_themeArchive = Common::makeZipArchive(node);
if (!_themeArchive) {
warning("Failed to open Zip archive '%s'.", node.getPath().c_str());
}
}
}
if (_themeArchive)
_themeFiles.add("theme_archive", _themeArchive, 1, true);
}
// Load the theme
// We pass the theme file here by default, so the user will
// have a descriptive error message. The only exception will
// be the builtin theme which has no filename.
loadTheme(_themeFile.empty() ? _themeId : _themeFile);
return ready();
}
void ThemeEngine::clearAll() {
if (_initOk) {
_system->clearOverlay();
_system->grabOverlay(_backBuffer.getPixels(), _backBuffer.pitch);
}
}
void ThemeEngine::refresh() {
// Flush all bitmaps if the overlay pixel format changed.
if (_overlayFormat != _system->getOverlayFormat()) {
for (ImagesMap::iterator i = _bitmaps.begin(); i != _bitmaps.end(); ++i) {
Graphics::Surface *surf = i->_value;
if (surf) {
surf->free();
delete surf;
}
}
_bitmaps.clear();
for (AImagesMap::iterator i = _abitmaps.begin(); i != _abitmaps.end(); ++i) {
Graphics::TransparentSurface *surf = i->_value;
if (surf) {
surf->free();
delete surf;
}
}
_abitmaps.clear();
}
init();
if (_enabled) {
_system->showOverlay();
if (_useCursor) {
CursorMan.replaceCursorPalette(_cursorPal, 0, _cursorPalSize);
CursorMan.replaceCursor(_cursor, _cursorWidth, _cursorHeight, _cursorHotspotX, _cursorHotspotY, 255, true);
}
}
}
void ThemeEngine::enable() {
if (_enabled)
return;
showCursor();
_system->showOverlay();
clearAll();
_enabled = true;
}
void ThemeEngine::disable() {
if (!_enabled)
return;
_system->hideOverlay();
hideCursor();
_enabled = false;
}
void ThemeEngine::setGraphicsMode(GraphicsMode mode) {
switch (mode) {
case kGfxStandard:
#ifndef DISABLE_FANCY_THEMES
case kGfxAntialias:
#endif
if (g_system->getOverlayFormat().bytesPerPixel == 4) {
_bytesPerPixel = sizeof(uint32);
break;
} else if (g_system->getOverlayFormat().bytesPerPixel == 2) {
_bytesPerPixel = sizeof(uint16);
break;
}
// fall through
default:
error("Invalid graphics mode");
}
uint32 width = _system->getOverlayWidth();
uint32 height = _system->getOverlayHeight();
_backBuffer.free();
_backBuffer.create(width, height, _overlayFormat);
_screen.free();
_screen.create(width, height, _overlayFormat);
delete _vectorRenderer;
_vectorRenderer = Graphics::createRenderer(mode);
_vectorRenderer->setSurface(&_screen);
// Since we reinitialized our screen surfaces we know nothing has been
// drawn so far. Sometimes we still end up with dirty screen bits in the
// list. Clearing it avoids invalid overlay writes when the backend
// resizes the overlay.
_dirtyScreen.clear();
}
void WidgetDrawData::calcBackgroundOffset() {
uint maxShadow = 0, maxBevel = 0;
for (Common::List<Graphics::DrawStep>::const_iterator step = _steps.begin();
step != _steps.end(); ++step) {
if ((step->autoWidth || step->autoHeight) && step->shadow > maxShadow)
maxShadow = step->shadow;
if (step->drawingCall == &Graphics::VectorRenderer::drawCallback_BEVELSQ && step->bevel > maxBevel)
maxBevel = step->bevel;
}
_backgroundOffset = maxBevel;
_shadowOffset = maxShadow;
}
void ThemeEngine::restoreBackground(Common::Rect r) {
if (_vectorRenderer->getActiveSurface() == &_backBuffer) {
// Only restore the background when drawing to the screen surface
return;
}
r.clip(_screen.w, _screen.h);
_vectorRenderer->blitSurface(&_backBuffer, r);
addDirtyRect(r);
}
/**********************************************************
* Theme elements management
*********************************************************/
void ThemeEngine::addDrawStep(const Common::String &drawDataId, const Graphics::DrawStep &step) {
DrawData id = parseDrawDataId(drawDataId);
assert(id != kDDNone && _widgets[id] != 0);
_widgets[id]->_steps.push_back(step);
}
bool ThemeEngine::addTextData(const Common::String &drawDataId, TextData textId, TextColor colorId, Graphics::TextAlign alignH, TextAlignVertical alignV) {
DrawData id = parseDrawDataId(drawDataId);
if (id == -1 || textId == -1 || colorId == kTextColorMAX || !_widgets[id])
return false;
_widgets[id]->_textDataId = textId;
_widgets[id]->_textColorId = colorId;
_widgets[id]->_textAlignH = alignH;
_widgets[id]->_textAlignV = alignV;
return true;
}
bool ThemeEngine::addFont(TextData textId, const Common::String &file, const Common::String &scalableFile, const int pointsize) {
if (textId == -1)
return false;
if (_texts[textId] != 0)
delete _texts[textId];
_texts[textId] = new TextDrawData;
if (file == "default") {
_texts[textId]->_fontPtr = _font;
} else {
Common::String localized = FontMan.genLocalizedFontFilename(file);
const Common::String charset
#ifdef USE_TRANSLATION
(TransMan.getCurrentCharset())
#endif
;
// Try localized fonts
_texts[textId]->_fontPtr = loadFont(localized, scalableFile, charset, pointsize, textId == kTextDataDefault);
if (!_texts[textId]->_fontPtr) {
// Try standard fonts
_texts[textId]->_fontPtr = loadFont(file, scalableFile, Common::String(), pointsize, textId == kTextDataDefault);
if (!_texts[textId]->_fontPtr)
error("Couldn't load font '%s'/'%s'", file.c_str(), scalableFile.c_str());
#ifdef USE_TRANSLATION
TransMan.setLanguage("C");
#endif
warning("Failed to load localized font '%s'.", localized.c_str());
return false;
}
}
return true;
}
bool ThemeEngine::addTextColor(TextColor colorId, int r, int g, int b) {
if (colorId >= kTextColorMAX)
return false;
if (_textColors[colorId] != 0)
delete _textColors[colorId];
_textColors[colorId] = new TextColorData;
_textColors[colorId]->r = r;
_textColors[colorId]->g = g;
_textColors[colorId]->b = b;
return true;
}
bool ThemeEngine::addBitmap(const Common::String &filename) {
// Nothing has to be done if the bitmap already has been loaded.
Graphics::Surface *surf = _bitmaps[filename];
if (surf)
return true;
const Graphics::Surface *srcSurface = 0;
if (filename.hasSuffix(".png")) {
// Maybe it is PNG?
#ifdef USE_PNG
Image::PNGDecoder decoder;
Common::ArchiveMemberList members;
_themeFiles.listMatchingMembers(members, filename);
for (Common::ArchiveMemberList::const_iterator i = members.begin(), end = members.end(); i != end; ++i) {
Common::SeekableReadStream *stream = (*i)->createReadStream();
if (stream) {
if (!decoder.loadStream(*stream))
error("Error decoding PNG");
srcSurface = decoder.getSurface();
delete stream;
if (srcSurface)
break;
}
}
if (srcSurface && srcSurface->format.bytesPerPixel != 1)
surf = srcSurface->convertTo(_overlayFormat);
#else
error("No PNG support compiled in");
#endif
} else {
// If not, try to load the bitmap via the BitmapDecoder class.
Image::BitmapDecoder bitmapDecoder;
Common::ArchiveMemberList members;
_themeFiles.listMatchingMembers(members, filename);
for (Common::ArchiveMemberList::const_iterator i = members.begin(), end = members.end(); i != end; ++i) {
Common::SeekableReadStream *stream = (*i)->createReadStream();
if (stream) {
bitmapDecoder.loadStream(*stream);
srcSurface = bitmapDecoder.getSurface();
delete stream;
if (srcSurface)
break;
}
}
if (srcSurface && srcSurface->format.bytesPerPixel != 1)
surf = srcSurface->convertTo(_overlayFormat);
}
// Store the surface into our hashmap (attention, may store NULL entries!)
_bitmaps[filename] = surf;
return surf != 0;
}
bool ThemeEngine::addAlphaBitmap(const Common::String &filename) {
// Nothing has to be done if the bitmap already has been loaded.
Graphics::TransparentSurface *surf = _abitmaps[filename];
if (surf)
return true;
#ifdef USE_PNG
const Graphics::TransparentSurface *srcSurface = 0;
#endif
if (filename.hasSuffix(".png")) {
// Maybe it is PNG?
#ifdef USE_PNG
Image::PNGDecoder decoder;
Common::ArchiveMemberList members;
_themeFiles.listMatchingMembers(members, filename);
for (Common::ArchiveMemberList::const_iterator i = members.begin(), end = members.end(); i != end; ++i) {
Common::SeekableReadStream *stream = (*i)->createReadStream();
if (stream) {
if (!decoder.loadStream(*stream))
error("Error decoding PNG");
srcSurface = new Graphics::TransparentSurface(*decoder.getSurface(), true);
delete stream;
if (srcSurface)
break;
}
}
if (srcSurface && srcSurface->format.bytesPerPixel != 1)
surf = srcSurface->convertTo(_overlayFormat);
#else
error("No PNG support compiled in");
#endif
} else {
error("Only PNG is supported as alphabitmap");
}
// Store the surface into our hashmap (attention, may store NULL entries!)
_abitmaps[filename] = surf;
return surf != 0;
}
bool ThemeEngine::addDrawData(const Common::String &data, bool cached) {
DrawData id = parseDrawDataId(data);
if (id == -1)
return false;
if (_widgets[id] != 0)
delete _widgets[id];
_widgets[id] = new WidgetDrawData;
_widgets[id]->_layer = kDrawDataDefaults[id].layer;
_widgets[id]->_textDataId = kTextDataNone;
return true;
}
/**********************************************************
* Theme XML loading
*********************************************************/
void ThemeEngine::loadTheme(const Common::String &themeId) {
unloadTheme();
debug(6, "Loading theme %s", themeId.c_str());
if (themeId == "builtin") {
_themeOk = loadDefaultXML();
} else {
// Load the archive containing image and XML data
_themeOk = loadThemeXML(themeId);
}
if (!_themeOk) {
warning("Failed to load theme '%s'", themeId.c_str());
return;
}
for (int i = 0; i < kDrawDataMAX; ++i) {
if (_widgets[i] == 0) {
warning("Missing data asset: '%s'", kDrawDataDefaults[i].name);
} else {
_widgets[i]->calcBackgroundOffset();
}
}
}
void ThemeEngine::unloadTheme() {
if (!_themeOk)
return;
for (int i = 0; i < kDrawDataMAX; ++i) {
delete _widgets[i];
_widgets[i] = 0;
}
for (int i = 0; i < kTextDataMAX; ++i) {
delete _texts[i];
_texts[i] = 0;
}
for (int i = 0; i < kTextColorMAX; ++i) {
delete _textColors[i];
_textColors[i] = 0;
}
_themeEval->reset();
_themeOk = false;
}
bool ThemeEngine::loadDefaultXML() {
// The default XML theme is included on runtime from a pregenerated
// file inside the themes directory.
// Use the Python script "makedeftheme.py" to convert a normal XML theme
// into the "default.inc" file, which is ready to be included in the code.
#ifndef DISABLE_GUI_BUILTIN_THEME
#include "themes/default.inc"
int xmllen = 0;
for (int i = 0; i < ARRAYSIZE(defaultXML); i++)
xmllen += strlen(defaultXML[i]);
byte *tmpXML = (byte *)malloc(xmllen + 1);
tmpXML[0] = '\0';
for (int i = 0; i < ARRAYSIZE(defaultXML); i++)
strncat((char *)tmpXML, defaultXML[i], xmllen);
if (!_parser->loadBuffer(tmpXML, xmllen)) {
free(tmpXML);
return false;
}
_themeName = "ScummVM Classic Theme (Builtin Version)";
_themeId = "builtin";
_themeFile.clear();
bool result = _parser->parse();
_parser->close();
free(tmpXML);
return result;
#else
warning("The built-in theme is not enabled in the current build. Please load an external theme");
return false;
#endif
}
bool ThemeEngine::loadThemeXML(const Common::String &themeId) {
assert(_parser);
assert(_themeArchive);
_themeName.clear();
//
// Now that we have a Common::Archive, verify that it contains a valid THEMERC File
//
Common::File themercFile;
themercFile.open("THEMERC", *_themeArchive);
if (!themercFile.isOpen()) {
warning("Theme '%s' contains no 'THEMERC' file.", themeId.c_str());
return false;
}
Common::String stxHeader = themercFile.readLine();
if (!themeConfigParseHeader(stxHeader, _themeName) || _themeName.empty()) {
warning("Corrupted 'THEMERC' file in theme '%s'", themeId.c_str());
return false;
}
Common::ArchiveMemberList members;
if (0 == _themeArchive->listMatchingMembers(members, "*.stx")) {
warning("Found no STX files for theme '%s'.", themeId.c_str());
return false;
}
//
// Loop over all STX files, load and parse them
//
for (Common::ArchiveMemberList::iterator i = members.begin(); i != members.end(); ++i) {
assert((*i)->getName().hasSuffix(".stx"));
if (_parser->loadStream((*i)->createReadStream()) == false) {
warning("Failed to load STX file '%s'", (*i)->getDisplayName().c_str());
_parser->close();
return false;
}
if (_parser->parse() == false) {
warning("Failed to parse STX file '%s'", (*i)->getDisplayName().c_str());
_parser->close();
return false;
}
_parser->close();
}
assert(!_themeName.empty());
return true;
}
/**********************************************************
* Draw Date descriptors drawing functions
*********************************************************/
void ThemeEngine::drawDD(DrawData type, const Common::Rect &r, uint32 dynamic, bool forceRestore) {
WidgetDrawData *drawData = _widgets[type];
if (!drawData)
return;
if (kDrawDataDefaults[type].parent != kDDNone && kDrawDataDefaults[type].parent != type)
drawDD(kDrawDataDefaults[type].parent, r);
Common::Rect area = r;
area.clip(_screen.w, _screen.h);
Common::Rect extendedRect = area;
extendedRect.grow(kDirtyRectangleThreshold + drawData->_backgroundOffset);
if (drawData->_shadowOffset > drawData->_backgroundOffset) {
extendedRect.right += drawData->_shadowOffset - drawData->_backgroundOffset;
extendedRect.bottom += drawData->_shadowOffset - drawData->_backgroundOffset;
}
if (!_clip.isEmpty()) {
extendedRect.clip(_clip);
}
if (forceRestore || drawData->_layer == kDrawLayerBackground)
restoreBackground(extendedRect);
if (drawData->_layer == _layerToDraw) {
Common::List<Graphics::DrawStep>::const_iterator step;
for (step = drawData->_steps.begin(); step != drawData->_steps.end(); ++step) {
_vectorRenderer->drawStepClip(area, _clip, *step, dynamic);
}
addDirtyRect(extendedRect);
}
}
void ThemeEngine::drawDDText(TextData type, TextColor color, const Common::Rect &r, const Common::String &text,
bool restoreBg, bool ellipsis, Graphics::TextAlign alignH, TextAlignVertical alignV,
int deltax, const Common::Rect &drawableTextArea) {
if (type == kTextDataNone || !_texts[type] || _layerToDraw == kDrawLayerBackground)
return;
Common::Rect area = r;
area.clip(_screen.w, _screen.h);
Common::Rect dirty = drawableTextArea;
if (dirty.isEmpty()) dirty = area;
else dirty.clip(area);
if (!_clip.isEmpty()) {
dirty.clip(_clip);
}
// HACK: One small pixel should be invisible enough
if (dirty.isEmpty()) dirty = Common::Rect(0, 0, 1, 1);
if (restoreBg)
restoreBackground(dirty);
_vectorRenderer->setFgColor(_textColors[color]->r, _textColors[color]->g, _textColors[color]->b);
_vectorRenderer->drawString(_texts[type]->_fontPtr, text, area, alignH, alignV, deltax, ellipsis, dirty);
addDirtyRect(dirty);
}
void ThemeEngine::drawBitmap(const Graphics::Surface *bitmap, const Common::Rect &r, bool alpha) {
if (_layerToDraw == kDrawLayerBackground)
return;
Common::Rect area = r;
area.clip(_screen.w, _screen.h);
if (alpha)
_vectorRenderer->blitKeyBitmapClip(bitmap, area, _clip);
else
_vectorRenderer->blitSubSurfaceClip(bitmap, area, _clip);
Common::Rect dirtyRect = area;
dirtyRect.clip(_clip);
addDirtyRect(dirtyRect);
}
/**********************************************************
* Widget drawing functions
*********************************************************/
void ThemeEngine::drawButton(const Common::Rect &r, const Common::String &str, WidgetStateInfo state, uint16 hints) {
if (!ready())
return;
DrawData dd = kDDButtonIdle;
if (state == kStateEnabled)
dd = kDDButtonIdle;
else if (state == kStateHighlight)
dd = kDDButtonHover;
else if (state == kStateDisabled)
dd = kDDButtonDisabled;
else if (state == kStatePressed)
dd = kDDButtonPressed;
drawDD(dd, r, 0, hints & WIDGET_CLEARBG);
drawDDText(getTextData(dd), getTextColor(dd), r, str, false, true, _widgets[dd]->_textAlignH,
_widgets[dd]->_textAlignV);
}
void ThemeEngine::drawLineSeparator(const Common::Rect &r) {
if (!ready())
return;
drawDD(kDDSeparator, r);
}
void ThemeEngine::drawCheckbox(const Common::Rect &r, const Common::String &str, bool checked, WidgetStateInfo state) {
if (!ready())
return;
Common::Rect r2 = r;
DrawData dd = kDDCheckboxDefault;
if (checked)
dd = kDDCheckboxSelected;
if (state == kStateDisabled)
dd = kDDCheckboxDisabled;
const int checkBoxSize = MIN((int)r.height(), getFontHeight());
r2.bottom = r2.top + checkBoxSize;
r2.right = r2.left + checkBoxSize;
drawDD(dd, r2);
r2.left = r2.right + checkBoxSize;
r2.right = r.right;
drawDDText(getTextData(dd), getTextColor(dd), r2, str, true, false, _widgets[kDDCheckboxDefault]->_textAlignH,
_widgets[dd]->_textAlignV);
}
void ThemeEngine::drawRadiobutton(const Common::Rect &r, const Common::String &str, bool checked, WidgetStateInfo state) {
if (!ready())
return;
Common::Rect r2 = r;
DrawData dd = kDDRadiobuttonDefault;
if (checked)
dd = kDDRadiobuttonSelected;
if (state == kStateDisabled)
dd = kDDRadiobuttonDisabled;
const int checkBoxSize = MIN((int)r.height(), getFontHeight());
r2.bottom = r2.top + checkBoxSize;
r2.right = r2.left + checkBoxSize;
drawDD(dd, r2);
r2.left = r2.right + checkBoxSize;
r2.right = MAX(r2.left, r.right);
drawDDText(getTextData(dd), getTextColor(dd), r2, str, true, false, _widgets[kDDRadiobuttonDefault]->_textAlignH,
_widgets[dd]->_textAlignV);
}