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128 lines
3.0 KiB
C++
128 lines
3.0 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef XEEN_SCREEN_H
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#define XEEN_SCREEN_H
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#include "common/rect.h"
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#include "graphics/screen.h"
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#include "xeen/font.h"
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#include "xeen/sprites.h"
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namespace Xeen {
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#define SCREEN_WIDTH 320
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#define SCREEN_HEIGHT 200
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#define PALETTE_COUNT 256
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#define PALETTE_SIZE (256 * 3)
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class XeenEngine;
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class Screen: public Graphics::Screen {
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private:
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XeenEngine *_vm;
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byte _mainPalette[PALETTE_SIZE];
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byte _tempPalette[PALETTE_SIZE];
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XSurface _pages[2];
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XSurface _savedScreens[10];
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bool _fadeIn;
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/**
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* Mark the entire screen for drawing
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*/
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void drawScreen();
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void fadeInner(int step);
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void updatePalette();
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void updatePalette(const byte *pal, int start, int count16);
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public:
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Screen(XeenEngine *vm);
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~Screen() override {}
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/**
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* Base method that descendent classes can override for recording affected
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* dirty areas of the surface
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*/
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void addDirtyRect(const Common::Rect &r) override { Graphics::Screen::addDirtyRect(r); }
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/**
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* Load a palette resource into the temporary palette
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*/
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void loadPalette(const Common::String &name);
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/**
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* Load a background resource into memory
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*/
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void loadBackground(const Common::String &name);
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/**
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* Copy a loaded background into a display page
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*/
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void loadPage(int pageNum);
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void freePages();
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/**
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* Merge the two pages along a horizontal split point
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*/
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void horizMerge(int xp = 0);
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/**
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* Merge the two pages along a vertical split point
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*/
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void vertMerge(int yp);
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/**
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* Fades in the screen
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*/
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void fadeIn(int step = 4);
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/**
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* Fades out the screen
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*/
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void fadeOut(int step = 4);
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/**
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* Saves a copy of the current screen into a specified slot
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*/
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void saveBackground(int slot = 1);
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/**
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* Restores a previously saved screen
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*/
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void restoreBackground(int slot = 1);
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/**
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* Draws the scroll in the background
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* @param rollUp If true, rolls up the scroll. If false, unrolls.
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* @param fadeInFlag If true, does an initial fade in
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* @returns True if key or mouse pressed
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*/
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bool doScroll(bool rollUp, bool fadeInFlag);
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};
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} // End of namespace Xeen
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#endif /* XEEN_SCREEN_H */
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