90 lines
No EOL
2.6 KiB
C++
90 lines
No EOL
2.6 KiB
C++
// Pi1541 - A Commodore 1541 disk drive emulator
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// Copyright(C) 2018 Stephen White
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//
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// This file is part of Pi1541.
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//
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// Pi1541 is free software : you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Pi1541 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 Pi1541. If not, see <http://www.gnu.org/licenses/>.
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#ifndef SCREEN_H
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#define SCREEN_H
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#include "types.h"
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typedef u32 RGBA;
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#define RED(colour) ( (u8)(((u32)colour) & 0xFF) )
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#define GREEN(colour) ( (u8)(((u32)colour >> 8) & 0xFF) )
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#define BLUE(colour) ( (u8)(((u32)colour >> 16) & 0xFF) )
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#define ALPHA(colour) ( (u8)(((u32)colour >> 24) & 0xFF) )
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#define RGBA(r, g, b, a) ( ((u32)((u8)(r))) | ((u32)((u8)(g)) << 8) | ((u32)((u8)(b)) << 16) | ((u32)((u8)(a)) << 24) )
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class Screen
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{
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public:
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Screen()
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: opened(false)
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, width(0)
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, height(0)
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, bpp(0)
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, pitch(0)
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, framebuffer(0)
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{
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}
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void Open(u32 width, u32 height, u32 colourDepth);
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void ClearArea(u32 x1, u32 y1, u32 x2, u32 y2, RGBA colour);
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void Clear(RGBA colour);
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void ScrollArea(u32 x1, u32 y1, u32 x2, u32 y2);
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void WriteChar(bool petscii, u32 x, u32 y, unsigned char c, RGBA colour);
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u32 PrintText(bool petscii, u32 xPos, u32 yPos, char *ptr, RGBA TxtColour = RGBA(0xff, 0xff, 0xff, 0xff), RGBA BkColour = RGBA(0, 0, 0, 0xFF), bool measureOnly = false, u32* width = 0, u32* height = 0);
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u32 MeasureText(bool petscii, char *ptr, u32* width = 0, u32* height = 0);
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void DrawLine(u32 x1, u32 y1, u32 x2, u32 y2, RGBA colour);
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void DrawLineV(u32 x, u32 y1, u32 y2, RGBA colour);
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void PlotPixel(u32 x, u32 y, RGBA colour);
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void PlotImage(u32* image, int x, int y, int w, int h);
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u32 Width() const { return width; }
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u32 Height() const { return height; }
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u32 GetCBMFontHeight();
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private:
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typedef void (Screen::*PlotPixelFunction)(u32 pixel_offset, RGBA Colour);
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void PlotPixel32(u32 pixel_offset, RGBA Colour);
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void PlotPixel24(u32 pixel_offset, RGBA Colour);
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void PlotPixel16(u32 pixel_offset, RGBA Colour);
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void PlotPixel8(u32 pixel_offset, RGBA Colour);
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void ClipRect(u32& x1, u32& y1, u32& x2, u32& y2);
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PlotPixelFunction plotPixelFn;
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bool opened;
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u32 width;
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u32 height;
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u32 bpp;
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u32 pitch;
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volatile u8* framebuffer;
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};
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#endif |