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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.
*
*/
#ifndef SHERLOCK_SCREEN_H
#define SHERLOCK_SCREEN_H
#include "common/list.h"
#include "common/rect.h"
#include "common/serializer.h"
#include "sherlock/surface.h"
#include "sherlock/resources.h"
namespace Sherlock {
#define PALETTE_SIZE 768
#define PALETTE_COUNT 256
#define VGA_COLOR_TRANS(x) ((x) * 255 / 63)
enum {
INFO_BLACK = 1,
INFO_FOREGROUND = 11,
INFO_BACKGROUND = 1,
BORDER_COLOR = 237,
INV_FOREGROUND = 14,
INV_BACKGROUND = 1,
COMMAND_HIGHLIGHTED = 10,
COMMAND_FOREGROUND = 15,
COMMAND_BACKGROUND = 4,
COMMAND_NULL = 248,
BUTTON_TOP = 233,
BUTTON_MIDDLE = 244,
BUTTON_BOTTOM = 248,
TALK_FOREGROUND = 12,
TALK_NULL = 16,
PEN_COLOR = 250
};
class SherlockEngine;
class Screen : public Surface {
private:
SherlockEngine *_vm;
int _fontNumber;
Common::List<Common::Rect> _dirtyRects;
uint32 _transitionSeed;
ImageFile *_font;
int _fontHeight;
Surface _sceneSurface;
/**
* Merges together overlapping dirty areas of the screen
*/
void mergeDirtyRects();
/**
* Returns the union of two dirty area rectangles
*/
bool unionRectangle(Common::Rect &destRect, const Common::Rect &src1, const Common::Rect &src2);
/**
* Draws the given string into the back buffer using the images stored in _font
*/
void writeString(const Common::String &str, const Common::Point &pt, byte color);
protected:
/**
* Adds a rectangle to the list of modified areas of the screen during the
* current frame
*/
virtual void addDirtyRect(const Common::Rect &r);
public:
Surface _backBuffer1, _backBuffer2;
Surface *_backBuffer;
bool _fadeStyle;
byte _cMap[PALETTE_SIZE];
byte _sMap[PALETTE_SIZE];
public:
Screen(SherlockEngine *vm);
virtual ~Screen();
/**
* Set the font to use for writing text on the screen
*/
void setFont(int fontNumber);
/**
* Handles updating any dirty areas of the screen Surface object to the physical screen
*/
void update();
/**
* Return the currently active palette
*/
void getPalette(byte palette[PALETTE_SIZE]);
/**
* Set the palette
*/
void setPalette(const byte palette[PALETTE_SIZE]);
/**
* Fades from the currently active palette to the passed palette
*/
int equalizePalette(const byte palette[PALETTE_SIZE]);
/**
* Fade out the palette to black
*/
void fadeToBlack(int speed = 2);
/**
* Fade in a given palette
*/
void fadeIn(const byte palette[PALETTE_SIZE], int speed = 2);
/**
* Do a random pixel transition in from _backBuffer surface to the screen
*/
void randomTransition();
/**
* Transition to the surface from _backBuffer using a vertical transition
*/
void verticalTransition();
/**
* Prints the text passed onto the back buffer at the given position and color.
* The string is then blitted to the screen
*/
void print(const Common::Point &pt, byte color, const char *formatStr, ...);
/**
* Print a strings onto the back buffer without blitting it to the screen
*/
void gPrint(const Common::Point &pt, byte color, const char *formatStr, ...);
/**
* Copies a section of the second back buffer into the main back buffer
*/
void restoreBackground(const Common::Rect &r);
/**
* Copies a given area to the screen
*/
void slamArea(int16 xp, int16 yp, int16 width, int16 height);
/**
* Copies a given area to the screen
*/
void slamRect(const Common::Rect &r);
/**
* Copy an image from the back buffer to the screen, taking care of both the
* new area covered by the shape as well as the old area, which must be restored
*/
void flushImage(ImageFrame *frame, const Common::Point &pt,
int16 *xp, int16 *yp, int16 *width, int16 *height);
/**
* Returns the width of a string in pixels
*/
int stringWidth(const Common::String &str);
/**
* Returns the width of a character in pixels
*/
int charWidth(char c);
/**
* Fills an area on the back buffer, and then copies it to the screen
*/
void vgaBar(const Common::Rect &r, int color);
/**
* Draws a button for use in the inventory, talk, and examine dialogs.
*/
void makeButton(const Common::Rect &bounds, int textX, const Common::String &str);
/**
* Prints an interface command with the first letter highlighted to indicate
* what keyboard shortcut is associated with it
*/
void buttonPrint(const Common::Point &pt, byte color, bool slamIt, const Common::String &str);
/**
* Draw a panel in the back buffer with a raised area effect around the edges
*/
void makePanel(const Common::Rect &r);
/**
* Draw a field in the back buffer with a raised area effect around the edges,
* suitable for text input.
*/
void makeField(const Common::Rect &r);
/**
* Sets the active back buffer pointer to a restricted sub-area of the first back buffer
*/
void setDisplayBounds(const Common::Rect &r);
/**
* Resets the active buffer pointer to point back to the full first back buffer
*/
void resetDisplayBounds();
/**
* Return the size of the current display window
*/
Common::Rect getDisplayBounds();
int fontNumber() const { return _fontNumber; }
/**
* Synchronize the data for a savegame
*/
void synchronize(Common::Serializer &s);
};
} // End of namespace Sherlock
#endif
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