7ca3c69091
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10898 a95241bf-73f2-0310-859d-f6bbb57e9c96
179 lines
5.5 KiB
C++
179 lines
5.5 KiB
C++
//------------------------------------------------------------------------------
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// Copyright (c) 2001-2005, Haiku, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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// File Name: PatternHandler.h
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// Author: DarkWyrm <bpmagic@columbus.rr.com>
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// Stephan Aßmus <superstippi@gmx.de>
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// Description: Class for easy calculation and use of patterns
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//
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//------------------------------------------------------------------------------
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#ifndef PATTERNHANDLER_H
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#define PATTERNHANDLER_H
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#include <string.h>
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#include <GraphicsDefs.h>
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#include "RGBColor.h"
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class Pattern {
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public:
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Pattern(void) {}
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Pattern(const uint64& p)
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{ fPattern.type64 = p; }
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Pattern(const int8* p)
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{ fPattern.type64 = *((const uint64*)p); }
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Pattern(const Pattern& src)
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{ fPattern.type64 = src.fPattern.type64; }
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const int8* GetInt8(void) const
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{ return fPattern.type8; }
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uint64 GetInt64(void) const
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{ return fPattern.type64; }
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void Set(const int8* p)
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{ fPattern.type64 = *((const uint64*)p); }
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void Set(const uint64& p)
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{ fPattern.type64 = p; }
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Pattern& operator=(const Pattern& from)
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{ fPattern.type64 = from.fPattern.type64; return *this; }
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Pattern& operator=(const int64 &from)
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{ fPattern.type64 = from; return *this; }
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Pattern& operator=(const pattern &from)
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{ memcpy(&fPattern.type64, &from, sizeof(pattern)); return *this; }
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private:
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typedef union
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{
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uint64 type64;
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int8 type8[8];
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} pattern_union;
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pattern_union fPattern;
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};
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extern const Pattern kSolidHigh;
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extern const Pattern kSolidLow;
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extern const Pattern kMixedColors;
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/*!
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\brief Class for easy calculation and use of patterns
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PatternHandlers are designed specifically for DisplayDriver subclasses.
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Pattern support can be easily added by setting the pattern to use via
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SetTarget, and then merely retrieving the value for the coordinates
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specified.
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*/
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class PatternHandler {
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public:
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PatternHandler(void);
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PatternHandler(const int8* p);
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PatternHandler(const uint64& p);
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PatternHandler(const Pattern& p);
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PatternHandler(const PatternHandler& other);
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virtual ~PatternHandler(void);
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void SetPattern(const int8* p);
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void SetPattern(const uint64& p);
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void SetPattern(const Pattern& p);
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void SetPattern(const pattern& p);
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void SetColors(const RGBColor& high, const RGBColor& low);
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void SetHighColor(const RGBColor& color);
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void SetLowColor(const RGBColor& color);
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void SetColors(const rgb_color& high, const rgb_color& low);
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void SetHighColor(const rgb_color& color);
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void SetLowColor(const rgb_color& color);
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RGBColor HighColor() const
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{ return fHighColor; }
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RGBColor LowColor() const
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{ return fLowColor; }
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RGBColor ColorAt(const BPoint& pt) const;
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RGBColor ColorAt(float x, float y) const;
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inline RGBColor ColorAt(int x, int y) const;
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// TODO: any ideas for a better name of the rgb_color version of this function?
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inline rgb_color R5ColorAt(int x, int y) const;
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bool IsHighColor(const BPoint& pt) const;
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inline bool IsHighColor(int x, int y) const;
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const pattern* GetR5Pattern(void) const
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{ return (const pattern*)fPattern.GetInt8(); }
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private:
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Pattern fPattern;
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RGBColor fHighColor;
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RGBColor fLowColor;
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};
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/*!
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\brief Obtains the color in the pattern at the specified coordinates
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\param x X coordinate to get the color for
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\param y Y coordinate to get the color for
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\return Color for the coordinates
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*/
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inline RGBColor
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PatternHandler::ColorAt(int x, int y) const
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{
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return IsHighColor(x, y) ? fHighColor : fLowColor;
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}
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/*!
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\brief Obtains the color in the pattern at the specified coordinates
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\param x X coordinate to get the color for
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\param y Y coordinate to get the color for
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\return Color for the coordinates
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*/
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inline rgb_color
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PatternHandler::R5ColorAt(int x, int y) const
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{
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return IsHighColor(x, y) ? fHighColor.GetColor32() : fLowColor.GetColor32();
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}
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/*!
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\brief Obtains the value of the pattern at the specified coordinates
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\param pt Coordinates to get the value for
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\return Value for the coordinates - true if high, false if low.
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*/
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inline bool
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PatternHandler::IsHighColor(int x, int y) const
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{
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// TODO: Does this work correctly for
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// negative coordinates?!?
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const int8* ptr = fPattern.GetInt8();
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int32 value = ptr[y % 8] & (1 << (7 - (x % 8)) );
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return (value == 0) ? false : true;
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}
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#endif
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