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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.
*
* $URL$
* $Id$
*
*/
#ifndef INTERFACE_MANAGER_H
#define INTERFACE_MANAGER_H
#include "common/scummsys.h"
#include "graphics/surface.h"
#include "common/system.h"
#include "graphics/surface.h"
#include "graphics/fontman.h"
#include "gui/dialog.h"
#include "gui/ThemeParser.h"
#include "graphics/VectorRenderer.h"
#include "gui/ThemeEval.h"
namespace GUI {
struct WidgetDrawData;
struct DrawDataInfo;
class ThemeEval;
struct TextDrawData {
const Graphics::Font *_fontPtr;
struct {
uint8 r, g, b;
} _color;
};
struct WidgetDrawData {
/** List of all the steps needed to draw this widget */
Common::List<Graphics::DrawStep> _steps;
int _textDataId;
GUI::Theme::TextAlign _textAlignH;
GUI::Theme::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;
/** Sets whether the widget is cached beforehand. */
bool _cached;
bool _buffer;
/** Texture where the cached widget is stored. */
Graphics::Surface *_surfaceCache;
~WidgetDrawData() {
_steps.clear();
if (_surfaceCache) {
_surfaceCache->free();
delete _surfaceCache;
}
}
};
class ThemeRenderer : public Theme {
protected:
typedef Common::String String;
typedef GUI::Dialog Dialog;
typedef Common::HashMap<Common::String, Graphics::Surface*> ImagesMap;
friend class GUI::Dialog;
friend class GUI::GuiObject;
/** Constant value to expand dirty rectangles, to make sure they are fully copied */
static const int kDirtyRectangleThreshold = 2;
/** Sets whether backcaching is enabled */
static const bool kEnableBackCaching = true;
/**
* DrawData sets enumeration.
* Each DD set corresponds to the actual looks
* of a widget in a given state.
*/
enum DrawData {
kDDMainDialogBackground,
kDDSpecialColorBackground,
kDDPlainColorBackground,
kDDDefaultBackground,
kDDTextSelectionBackground,
kDDWidgetBackgroundDefault,
kDDWidgetBackgroundSmall,
kDDWidgetBackgroundEditText,
kDDWidgetBackgroundSlider,
kDDButtonIdle,
kDDButtonHover,
kDDButtonDisabled,
kDDSliderFull,
kDDSliderHover,
kDDSliderDisabled,
kDDCheckboxDefault,
kDDCheckboxDisabled,
kDDCheckboxSelected,
kDDTabActive,
kDDTabInactive,
kDDTabBackground,
kDDScrollbarBase,
kDDScrollbarButtonIdle,
kDDScrollbarButtonHover,
kDDScrollbarHandleIdle,
kDDScrollbarHandleHover,
kDDPopUpIdle,
kDDPopUpHover,
kDDCaret,
kDDSeparator,
kDrawDataMAX,
kDDNone = -1
};
/**
* Default values for each DrawData item.
* @see kDrawDataDefaults[] for implementation.
*/
static const 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 */
bool buffer; /** Sets whether this item is buffered on the backbuffer or drawn directly to the screen. */
DrawData parent; /** Parent DrawData item, for items that overlay. E.g. kButtonIdle -> kButtonHover */
} kDrawDataDefaults[];
/**
* Queue Node for the drawing queue.
* Specifies the exact drawing to be done when processing
* the drawing queues.
*/
struct DrawQueue {
DrawData type; /** DrawData item to draw. */
Common::Rect area; /** Place on screen to draw it. */
uint32 dynData; /** Dynamic data which modifies the DrawData item (optional)*/
};
enum TextData {
kTextDataNone = -1,
kTextDataDefault = 0,
kTextDataHover,
kTextDataDisabled,
kTextDataInverted,
kTextDataButton,
kTextDataButtonHover,
kTextDataNormalFont,
kTextDataMAX
};
static const struct TextDataInfo {
TextData id;
const char *name;
} kTextDataDefaults[];
struct DrawQueueText {
TextData type;
Common::Rect area;
Common::String text;
GUI::Theme::TextAlign alignH;
GUI::Theme::TextAlignVertical alignV;
bool elipsis;
bool restoreBg;
int deltax;
};
struct BitmapQueue {
const Graphics::Surface *bitmap;
Common::Rect area;
bool alpha;
};
public:
/** Graphics mode enumeration.
* Each item represents a set of BPP and Renderer modes for a given
* surface.
*/
enum GraphicsMode {
kGfxDisabled = 0, /** No GFX */
kGfxStandard16bit, /** 2BPP with the standard (aliased) renderer. */
kGfxAntialias16bit /** 2BPP with the optimized AA renderer. */
};
/** Default constructor */
ThemeRenderer(Common::String fileName, GraphicsMode mode);
/** Default destructor */
~ThemeRenderer();
GUI::ThemeEval *themeEval() { return _themeEval; }
/**
* VIRTUAL METHODS
* This is the implementation of the GUI::Theme API to allow
* the ThemeRenderer class to be plugged in as any other GUI
* theme. In fact, the renderer works like any other GUI theme,
* but supports extensive customization of the drawn widgets.
*/
bool init();
void deinit();
void clearAll();
void refresh();
void enable();
void disable();
/**
* Implementation of the GUI::Theme API. Called when a
* new dialog is opened. Note that the boolean parameter
* meaning has been changed.
*
* @param enableBuffering If set to true, buffering is enabled for
* drawing this dialog, and will continue enabled
* until disabled.
*/
void openDialog(bool enableBuffering, ShadingStyle shading = kShadingNone);
/**
* The updateScreen() method is called every frame.
* It processes all the drawing queues and then copies dirty rects
* in the current Screen surface to the overlay.
*/
void updateScreen();
/** Since the rendering pipeline changes, closing all dialogs causes no effect
TODO: remove this from the original GUI::Theme API */
void closeAllDialogs() {}
/** Drawing area has been removed: it was too hackish. A workaround is on the works.
TODO: finish the workaround for the credits dialog
TODO: remove this from the original GUI::Theme API */
void resetDrawArea() {}
/**
* FONT MANAGEMENT METHODS
*/
TextData fontStyleToData(FontStyle font) const {
switch (font) {
case kFontStyleNormal:
return kTextDataNormalFont;
default:
return kTextDataDefault;
}
}
const Graphics::Font *getFont(FontStyle font) const { return _texts[fontStyleToData(font)]->_fontPtr; }
int getFontHeight(FontStyle font = kFontStyleBold) const {
return ready() ? _texts[fontStyleToData(font)]->_fontPtr->getFontHeight() : 0;
}
int getStringWidth(const Common::String &str, FontStyle font) const {
return ready() ? _texts[fontStyleToData(font)]->_fontPtr->getStringWidth(str) : 0;
}
int getCharWidth(byte c, FontStyle font) const {
return ready() ? _texts[fontStyleToData(font)]->_fontPtr->getCharWidth(c) : 0;
}
/**
* WIDGET DRAWING METHODS
*/
void drawWidgetBackground(const Common::Rect &r, uint16 hints,
WidgetBackground background = kWidgetBackgroundPlain, WidgetStateInfo state = kStateEnabled);
void drawButton(const Common::Rect &r, const Common::String &str,
WidgetStateInfo state = kStateEnabled, uint16 hints = 0);
void drawSurface(const Common::Rect &r, const Graphics::Surface &surface,
WidgetStateInfo state = kStateEnabled, int alpha = 256, bool themeTrans = false);
void drawSlider(const Common::Rect &r, int width,
WidgetStateInfo state = kStateEnabled);
void drawCheckbox(const Common::Rect &r, const Common::String &str,
bool checked, WidgetStateInfo state = kStateEnabled);
void drawTab(const Common::Rect &r, int tabHeight, int tabWidth,
const Common::Array<Common::String> &tabs, int active, uint16 hints,
int titleVPad, WidgetStateInfo state = kStateEnabled);
void drawScrollbar(const Common::Rect &r, int sliderY, int sliderHeight,
ScrollbarState, WidgetStateInfo state = kStateEnabled);
void drawPopUpWidget(const Common::Rect &r, const Common::String &sel,
int deltax, WidgetStateInfo state = kStateEnabled, TextAlign align = kTextAlignLeft);
void drawCaret(const Common::Rect &r, bool erase,
WidgetStateInfo state = kStateEnabled);
void drawLineSeparator(const Common::Rect &r, WidgetStateInfo state = kStateEnabled);
void drawDialogBackground(const Common::Rect &r, uint16 hints, WidgetStateInfo state);
void drawText(const Common::Rect &r, const Common::String &str,
WidgetStateInfo state, TextAlign align, bool inverted, int deltax, bool useEllipsis, FontStyle font);
void drawChar(const Common::Rect &r, byte ch,
const Graphics::Font *font, WidgetStateInfo state);
/**
* Actual implementation of a Dirty Rect drawing routine.
* Dirty rectangles are queued on a list and are later merged/calculated
* before the actual drawing.
*
* @param r Area of the dirty rect.
* @param backup Deprecated.
* @param special Deprecated.
*/
bool addDirtyRect(Common::Rect r, bool backup = false, bool special = false) {
_dirtyScreen.push_back(r);
return true;
}
/**
* Returns the DrawData enumeration value that represents the given string
* in the DrawDataDefaults enumeration.
* It's slow, but called sparsely.
*
* @returns The drawdata enum value, or -1 if not found.
* @param name The representing name, as found on Theme Description XML files.
* @see kDrawDataDefaults[]
*/
DrawData getDrawDataId(const Common::String &name) {
for (int i = 0; i < kDrawDataMAX; ++i)
if (name.compareToIgnoreCase(kDrawDataDefaults[i].name) == 0)
return kDrawDataDefaults[i].id;
return kDDNone;
}
TextData getTextDataId(const Common::String &name) {
for (int i = 0; i < kTextDataMAX; ++i)
if (name.compareToIgnoreCase(kTextDataDefaults[i].name) == 0)
return kTextDataDefaults[i].id;
return kTextDataNone;
}
/**
* Interface for ThemeParser class: Parsed DrawSteps are added via this function.
* There is no return type because DrawSteps can always be added, unless something
* goes horribly wrong.
* The specified step will be added to the Steps list of the given DrawData id.
*
* @param drawDataId The representing DrawData name, as found on Theme Description XML files.
* @param step The actual DrawStep struct to be added.
*/
void addDrawStep(const Common::String &drawDataId, Graphics::DrawStep step);
/**
* Interfacefor the ThemeParser class: Parsed DrawData sets are added via this function.
* The goal of the function is to initialize each DrawData set before their DrawSteps can
* be added, hence this must be called for each DD set before addDrawStep() can be called
* for that given set.
*
* @param data The representing DrawData name, as found on Theme Description XML files.
* @param cached Whether this DD set will be cached beforehand.
*/
bool addDrawData(const Common::String &data, bool cached);
/**
* Interface for the ThemeParser class: Loads a font to use on the GUI from the given
* filename.
*
* @param fontName Identifier name for the font.
* @param file Name of the font file.
* @param r, g, b Color of the font.
*/
bool addFont(const Common::String &fontName, const Common::String &file, int r, int g, int b);
/**
* Interface for the ThemeParser class: Loads a bitmap file to use on the GUI.
* The filename is also used as its identifier.
*
* @param filename Name of the bitmap file.
*/
bool addBitmap(const Common::String &filename);
/**
* Adds a new TextStep from the ThemeParser. This will be deprecated/removed once the
* new Font API is in place.
*/
bool addTextData(const Common::String &drawDataId, const Common::String &textDataId, TextAlign alignH, TextAlignVertical alignV);
/** Interface to the new Theme XML parser */
ThemeParser *parser() {
return _parser;
}
/**
* Returns if the Theme is ready to draw stuff on screen.
* Must be called instead of just checking _initOk, because
* this checks if the renderer is initialized AND if the theme
* is loaded.
*/
bool ready() const {
return _initOk && _themeOk;
}
/** Custom implementation of the GUI::Theme API, changed to use the XML parser. */
bool loadTheme(Common::String themeName);
/**
* Changes the active graphics mode of the GUI; may be used to either
* initialize the GUI or to change the mode while the GUI is already running.
*/
void setGraphicsMode(GraphicsMode mode);
/**
* Finishes buffering: widgets from there one will be drawn straight on the screen
* without drawing queues.
*/
void finishBuffering() {
_buffering = false;
}
void *evaluator() { return _themeEval; }
bool supportsImages() const { return true; }
bool ownCursor() const { return _useCursor; }
Graphics::Surface *getBitmap(const Common::String &name) {
return _bitmaps.contains(name) ? _bitmaps[name] : 0;
}
const Graphics::Surface *getImageSurface(const kThemeImages n) const {
if (n == kImageLogo)
return _bitmaps.contains("logo.bmp") ? _bitmaps["logo.bmp"] : 0;
return 0;
}
protected:
const Common::String &getThemeName() const { return _themeName; }
const Common::String &getThemeFileName() const { return _themeFileName; }
/**
* Initializes the drawing screen surfaces, _screen and _backBuffer.
* If the surfaces already exist, they are cleared and re-initialized.
*
* @param backBuffer Sets whether the _backBuffer surface should be initialized.
* @template PixelType C type which specifies the size of each pixel.
* Defaults to uint16 (2 BPP for the surfaces)
*/
template<typename PixelType> void screenInit(bool backBuffer = true);
/**
* Loads the given theme into the ThemeRenderer.
* Note that ThemeName is an identifier, not a filename.
*
* @param ThemeName Theme identifier.
* @returns True if the theme was succesfully loaded.
*/
bool loadThemeXML(Common::String themeName);
/**
* Loads the default theme file (the embeded XML file found
* in ThemeDefaultXML.cpp).
* Called only when no other themes are available.
*/
bool loadDefaultXML();
/**
* Unloads the currently loaded theme so another one can
* be loaded.
*/
void unloadTheme();
/**
* Not implemented yet.
* TODO: reload themes, reload the renderer, recheck everything
*/
void screenChange() {
error("Screen Changes are not supported yet. Fix this!");
}
/**
* Actual Dirty Screen handling function.
* Handles all the dirty squares in the list, merges and optimizes
* them when possible and draws them to the screen.
* Called from updateScreen()
*/
void renderDirtyScreen();
/**
* Frees the vector renderer.
*/
void freeRenderer() {
delete _vectorRenderer;
_vectorRenderer = 0;
}
/**
* Frees the Back buffer surface, only if it's available.
*/
void freeBackbuffer() {
if (_backBuffer != 0) {
_backBuffer->free();
delete _backBuffer;
_backBuffer = 0;
}
}
/**
* Frees the main screen drawing surface, only if it's available.
*/
void freeScreen() {
if (_screen != 0) {
_screen->free();
delete _screen;
_screen = 0;
}
}
TextData getTextData(DrawData ddId) {
return _widgets[ddId] ? (TextData)_widgets[ddId]->_textDataId : kTextDataNone;
}
/**
* Checks if a given DrawData set for a widget has been cached beforehand
* and is ready to be blit into the screen.
*
* @param type DrawData type of the widget.
* @param r Size of the widget which is expected to be cached.
*/
bool isWidgetCached(DrawData type, const Common::Rect &r);
/**
* Draws a cached widget directly on the screen. Currently deprecated.
*
* @param type DrawData type of the widget.
* @param r Position on screen to draw the widget.
*/
void drawCached(DrawData type, const Common::Rect &r);
/**
* 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.
*
* @param type DrawData type of the widget.
*/
void calcBackgroundOffset(DrawData type);
/**
* Draws a DrawQueue item (which contains DrawData information and a screen
* position) into the screen.
*
* This is the only way the Theme has to drawn on the screen.
*
* @param draw Sets if the DrawData info will be actually drawn.
* @param restore Sets if the background behind the widget will be restored before drawing.
*/
inline void drawDD(const DrawQueue &q, bool draw = true, bool restore = false);
inline void drawDDText(const DrawQueueText &q);
inline void drawBitmap(const BitmapQueue &q);
/**
* Generates a DrawQueue item and enqueues it so it's drawn to the screen
* when the drawing queue is processed.
*
* If Buffering is enabled, the DrawQueue item will be automatically placed
* on its corresponding queue.
* If Buffering is disabled, the DrawQueue item will be processed immediately
* and drawn to the screen.
*
* This function is called from all the Widget Drawing methods.
*/
inline void queueDD(DrawData type, const Common::Rect &r, uint32 dynamic = 0);
inline void queueDDText(TextData type, const Common::Rect &r, const Common::String &text, bool restoreBg,
bool elipsis, TextAlign alignH = kTextAlignLeft, TextAlignVertical alignV = kTextAlignVTop, int deltax = 0);
inline void queueBitmap(const Graphics::Surface *bitmap, const Common::Rect &r, bool alpha);
/**
* DEBUG: Draws a white square around the given position and writes the given next to it.
*/
inline void debugWidgetPosition(const char *name, const Common::Rect &r);
/**
* Wrapper for restoring data from the Back Buffer to the screen.
* The actual processing is done in the VectorRenderer.
*
* @param r Area to restore.
* @param special Deprecated.
*/
void restoreBackground(Common::Rect r, bool special = false);
/**
* Default values from GUI::Theme
*/
int getTabSpacing() const { return 0; }
int getTabPadding() const { return 3; }
OSystem *_system; /** Global system object. */
/** Vector Renderer object, does the actual drawing on screen */
Graphics::VectorRenderer *_vectorRenderer;
/** XML Parser, does the Theme parsing instead of the default parser */
GUI::ThemeParser *_parser;
/** Theme evaluator (changed from GUI::Eval to add functionality) */
GUI::ThemeEval *_themeEval;
/** Main screen surface. This is blitted straight into the overlay. */
Graphics::Surface *_screen;
/** Backbuffer surface. Stores previous states of the screen to blit back */
Graphics::Surface *_backBuffer;
/** Sets whether the current drawing is being buffered (stored for later
processing) or drawn directly to the screen. */
bool _buffering;
/** Bytes per pixel of the Active Drawing Surface (i.e. the screen) */
int _bytesPerPixel;
/** Current graphics mode */
GraphicsMode _graphicsMode;
/** Font info. */
Common::String _fontName;
const Graphics::Font *_font;
/** Array of all the DrawData elements than can be drawn to the screen.
Must be full so the renderer can work. */
WidgetDrawData *_widgets[kDrawDataMAX];
/** Array of all the text fonts that can be drawn. */
TextDrawData *_texts[kTextDataMAX];
ImagesMap _bitmaps;
/** List of all the dirty screens that must be blitted to the overlay. */
Common::List<Common::Rect> _dirtyScreen;
/** Queue with all the drawing that must be done to the Back Buffer */
Common::List<DrawQueue> _bufferQueue;
/** Queue with all the drawing that must be done to the screen */
Common::List<DrawQueue> _screenQueue;
/** Queue with all the text drawing that must be done to the screen */
Common::List<DrawQueueText> _textQueue;
Common::List<BitmapQueue> _bitmapQueue;
bool _initOk; /** Class and renderer properly initialized */
bool _themeOk; /** Theme data successfully loaded. */
bool _enabled; /** Whether the Theme is currently shown on the overlay */
Common::String _themeName; /** Name of the currently loaded theme */
Common::String _themeFileName;
/** Custom Cursor Management */
void setUpCursor();
void createCursor();
bool _useCursor;
int _cursorHotspotX, _cursorHotspotY;
int _cursorTargetScale;
#define MAX_CURS_COLORS 255
byte *_cursor;
bool _needPaletteUpdates;
uint _cursorWidth, _cursorHeight;
byte _cursorPal[4*MAX_CURS_COLORS];
};
} // end of namespace GUI.
#endif
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