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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 SCI_GUI_GFX_H
#define SCI_GUI_GFX_H

#include "sci/gui/gui.h"

namespace Sci {

class SciGuiScreen;
class SciGuiPalette;
class SciGuiFont;
class SciGuiPicture;
class SciGuiView;
class SciGuiGfx {
public:
	SciGuiGfx(EngineState *state, SciGuiScreen *screen, SciGuiPalette *palette);
	~SciGuiGfx();

	void init(void);

	// FIXME: Don't store EngineState
	void resetEngineState(EngineState *newState) { _s = newState; }

	byte *GetSegment(byte seg);
	void ResetScreen();

	GuiPort *SetPort(GuiPort *port);
	GuiPort *GetPort();
	void SetOrigin(int16 left, int16 top);
	void MoveTo(int16 left, int16 top);
	void Move(int16 left, int16 top);
	void OpenPort(GuiPort *port);
	void PenColor(int16 color);
	void BackColor(int16 color);
	void PenMode(int16 mode);
	void TextFace(int16 textFace);
	int16 GetPointSize(void);
	GuiResourceId GetFontId();
	SciGuiFont *GetFont();
	void SetFont(GuiResourceId fontId);

	void ClearScreen(byte color = 255);
	void InvertRect(const Common::Rect &rect);
	void EraseRect(const Common::Rect &rect);
	void PaintRect(const Common::Rect &rect);
	void FillRect(const Common::Rect &rect, int16 drawFlags, byte clrPen, byte clrBack = 0, byte bControl = 0);
	void FrameRect(const Common::Rect &rect);
	void OffsetRect(Common::Rect &r);
	void OffsetLine(Common::Point &start, Common::Point &end);

	byte CharHeight(int16 ch);
	byte CharWidth(int16 ch);
	void ClearChar(int16 chr);
	void DrawChar(int16 chr);
	void StdChar(int16 chr);

	void SetTextFonts(int argc, reg_t *argv);
	void SetTextColors(int argc, reg_t *argv);
	int16 TextSize(Common::Rect &rect, const char *str, GuiResourceId fontId, int16 maxwidth);
	void ShowString(const char *str, GuiResourceId orgFontId, int16 orgPenColor) {
		ShowText(str, 0, (int16)strlen(str), orgFontId, orgPenColor);
	}
	void DrawString(const char *str, GuiResourceId orgFontId, int16 orgPenColor) {
		DrawText(str, 0, (int16)strlen(str), orgFontId, orgPenColor);
	}
	void TextBox(const char *str, int16 bshow, const Common::Rect &rect, int16 align, GuiResourceId fontId);
	void BitsShow(const Common::Rect &r);
	GuiMemoryHandle BitsSave(const Common::Rect &rect, byte screenFlags);
	void BitsGetRect(GuiMemoryHandle memoryHandle, Common::Rect *destRect);
	void BitsRestore(GuiMemoryHandle memoryHandle);
	void BitsFree(GuiMemoryHandle memoryHandle);

	void Draw_String(const char *text);
	
	void drawPicture(GuiResourceId pictureId, int16 animationNr, bool mirroredFlag, bool addToFlag, GuiResourceId paletteId);
	void drawCel(GuiResourceId viewId, GuiViewLoopNo loopNo, GuiViewCelNo celNo, uint16 leftPos, uint16 topPos, byte priority, uint16 paletteNo);
	void drawCel(GuiResourceId viewId, GuiViewLoopNo loopNo, GuiViewCelNo celNo, Common::Rect celRect, byte priority, uint16 paletteNo);
	void drawCel(SciGuiView *view, GuiViewLoopNo loopNo, GuiViewCelNo celNo, Common::Rect celRect, byte priority, uint16 paletteNo);
	void drawListControl(Common::Rect rect, reg_t obj, int16 maxChars, int16 count, const char **entries, GuiResourceId fontId, int16 upperPos, int16 cursorPos, bool isAlias);
	void TexteditCursorDraw (Common::Rect rect, const char *text, uint16 curPos);
	void TexteditCursorErase();
	void TexteditChange(reg_t controlObject, reg_t eventObject);

	uint16 onControl(uint16 screenMask, Common::Rect rect);

	void PriorityBandsInit(int16 bandCount, int16 top, int16 bottom);
	void PriorityBandsInit(byte *data);
	byte CoordinateToPriority(int16 y);
	int16 PriorityToCoordinate(byte priority);

	bool CanBeHereCheckRectList(reg_t checkObject, Common::Rect checkRect, List *list);

	void SetNowSeen(reg_t objectReference);

	GuiPort *_menuPort;
	Common::Rect _menuRect;

private:
	int16 TextCodeProcessing(const char *&text, GuiResourceId orgFontId, int16 orgPenColor);
	void TextWidth(const char *text, int16 from, int16 len, GuiResourceId orgFontId, int16 &textWidth, int16 &textHeight);
	void StringWidth(const char *str, GuiResourceId orgFontId, int16 &textWidth, int16 &textHeight);
	int16 GetLongest(const char *str, int16 maxwidth, GuiResourceId orgFontId);
	void DrawText(const char *str, int16 from, int16 len, GuiResourceId orgFontId, int16 orgPenColor);
	void ShowText(const char *str, int16 from, int16 len, GuiResourceId orgFontId, int16 orgPenColor);

	void TexteditSetBlinkTime();

	EngineState *_s;
	SciGuiScreen *_screen;
	SciGuiPalette *_palette;

	Common::Rect _bounds;
	GuiPort *_mainPort;
	GuiPort *_curPort;

	int _textFontsCount;
	GuiResourceId *_textFonts;
	int _textColorsCount;
	uint16 *_textColors;

	// Priority Bands related variables
	int16 _priorityTop, _priorityBottom, _priorityBandCount;
	byte _priorityBands[200];

	// Textedit-Control related
	Common::Rect _texteditCursorRect;
	bool _texteditCursorVisible;
	uint32 _texteditBlinkTime;

	SciGuiFont *_font;
};

} // End of namespace Sci

#endif