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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 SCI_GRAPHICS_SCREEN_H
#define SCI_GRAPHICS_SCREEN_H
#include "sci/sci.h"
#include "sci/graphics/helpers.h"
#include "sci/graphics/view.h"
#include "graphics/sjis.h"
namespace Sci {
#define SCI_SCREEN_UPSCALEDMAXHEIGHT 200
enum GfxScreenUpscaledMode {
GFX_SCREEN_UPSCALED_DISABLED = 0,
GFX_SCREEN_UPSCALED_640x400 = 1,
GFX_SCREEN_UPSCALED_640x440 = 2,
GFX_SCREEN_UPSCALED_640x480 = 3
};
enum GfxScreenMasks {
GFX_SCREEN_MASK_VISUAL = 1,
GFX_SCREEN_MASK_PRIORITY = 2,
GFX_SCREEN_MASK_CONTROL = 4,
GFX_SCREEN_MASK_DISPLAY = 8, // not official sierra sci, only used internally
GFX_SCREEN_MASK_ALL = GFX_SCREEN_MASK_VISUAL|GFX_SCREEN_MASK_PRIORITY|GFX_SCREEN_MASK_CONTROL
};
enum {
DITHERED_BG_COLORS_SIZE = 256
};
/**
* Screen class, actually creates 3 (4) screens internally:
* - visual/display (for the user),
* - priority (contains priority information) and
* - control (contains control information).
* Handles all operations to it and copies parts of visual/display screen to
* the actual screen, so the user can really see it.
*/
class GfxScreen {
public:
GfxScreen(ResourceManager *resMan);
~GfxScreen();
uint16 getWidth() { return _width; }
uint16 getHeight() { return _height; }
uint16 getDisplayWidth() { return _displayWidth; }
uint16 getDisplayHeight() { return _displayHeight; }
byte getColorWhite() { return _colorWhite; }
byte getColorDefaultVectorData() { return _colorDefaultVectorData; }
void copyToScreen();
void copyFromScreen(byte *buffer);
void kernelSyncWithFramebuffer();
void copyRectToScreen(const Common::Rect &rect);
void copyDisplayRectToScreen(const Common::Rect &rect);
void copyRectToScreen(const Common::Rect &rect, int16 x, int16 y);
byte getDrawingMask(byte color, byte prio, byte control);
void putPixel(int x, int y, byte drawMask, byte color, byte prio, byte control);
void putFontPixel(int startingY, int x, int y, byte color);
void putPixelOnDisplay(int x, int y, byte color);
void drawLine(Common::Point startPoint, Common::Point endPoint, byte color, byte prio, byte control);
void drawLine(int16 left, int16 top, int16 right, int16 bottom, byte color, byte prio, byte control) {
drawLine(Common::Point(left, top), Common::Point(right, bottom), color, prio, control);
}
GfxScreenUpscaledMode getUpscaledHires() const {
return _upscaledHires;
}
bool isUnditheringEnabled() const {
return _unditheringEnabled;
}
void enableUndithering(bool flag);
void putKanjiChar(Graphics::FontSJIS *commonFont, int16 x, int16 y, uint16 chr, byte color);
byte getVisual(int x, int y);
byte getPriority(int x, int y);
byte getControl(int x, int y);
byte isFillMatch(int16 x, int16 y, byte drawMask, byte t_color, byte t_pri, byte t_con, bool isEGA);
int bitsGetDataSize(Common::Rect rect, byte mask);
void bitsSave(Common::Rect rect, byte mask, byte *memoryPtr);
void bitsGetRect(byte *memoryPtr, Common::Rect *destRect);
void bitsRestore(byte *memoryPtr);
void scale2x(const byte *src, byte *dst, int16 srcWidth, int16 srcHeight, byte bytesPerPixel = 1);
void adjustToUpscaledCoordinates(int16 &y, int16 &x, Sci32ViewNativeResolution viewScalingType = SCI_VIEW_NATIVERES_NONE);
void adjustBackUpscaledCoordinates(int16 &y, int16 &x, Sci32ViewNativeResolution viewScalingType = SCI_VIEW_NATIVERES_NONE);
void dither(bool addToFlag);
// Force a color combination as a dithered color
void ditherForceDitheredColor(byte color);
int16 *unditherGetDitheredBgColors();
void debugShowMap(int mapNo);
int _picNotValid; // possible values 0, 1 and 2
int _picNotValidSci11; // another variable that is used by kPicNotValid in sci1.1
int16 kernelPicNotValid(int16 newPicNotValid);
void kernelShakeScreen(uint16 shakeCount, uint16 direction);
void setFontIsUpscaled(bool isUpscaled) { _fontIsUpscaled = isUpscaled; }
bool fontIsUpscaled() const { return _fontIsUpscaled; }
private:
uint16 _width;
uint16 _height;
uint _pixels;
uint16 _displayWidth;
uint16 _displayHeight;
uint _displayPixels;
byte _colorWhite;
byte _colorDefaultVectorData;
void bitsRestoreScreen(Common::Rect rect, byte *&memoryPtr, byte *screen, uint16 screenWidth);
void bitsRestoreDisplayScreen(Common::Rect rect, byte *&memoryPtr);
void bitsSaveScreen(Common::Rect rect, byte *screen, uint16 screenWidth, byte *&memoryPtr);
void bitsSaveDisplayScreen(Common::Rect rect, byte *&memoryPtr);
void setVerticalShakePos(uint16 shakePos);
/**
* If this flag is true, undithering is enabled, otherwise disabled.
*/
bool _unditheringEnabled;
int16 _ditheredPicColors[DITHERED_BG_COLORS_SIZE];
// These screens have the real resolution of the game engine (320x200 for
// SCI0/SCI1/SCI11 games, 640x480 for SCI2 games). SCI0 games will be
// dithered in here at any time.
byte *_visualScreen;
byte *_priorityScreen;
byte *_controlScreen;
/**
* This screen is the one that is actually displayed to the user. It may be
* 640x400 for japanese SCI1 games. SCI0 games may be undithered in here.
* Only read from this buffer for Save/ShowBits usage.
*/
byte *_displayScreen;
ResourceManager *_resMan;
/**
* Pointer to the currently active screen (changing it only required for
* debug purposes).
*/
byte *_activeScreen;
/**
* This variable defines, if upscaled hires is active and what upscaled mode
* is used.
*/
GfxScreenUpscaledMode _upscaledHires;
/**
* This here holds a translation for vertical coordinates between native
* (visual) and actual (display) screen.
*/
int _upscaledMapping[SCI_SCREEN_UPSCALEDMAXHEIGHT + 1];
/**
* This defines whether or not the font we're drawing is already scaled
* to the screen size (and we therefore should not upscale it ourselves).
*/
bool _fontIsUpscaled;
uint16 getLowResScreenHeight();
};
} // End of namespace Sci
#endif
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