63 lines
2.9 KiB
C++
63 lines
2.9 KiB
C++
/*****************************************************************************
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* *
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* L F B G R A P H I C S *
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* *
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*---------------------------------------------------------------------------*
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* Beschreibung: Zeichenfunktionen fuer Grafikmodi, die auf einem *
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* linearen Framebuffer basieren. Verwendet in VESA und *
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* QemuVGA. *
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* *
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* Autor: Michael Schoettner, HHU, 19.9.2016 *
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* Der Code fuer das Zeichnen der Linie ist von Alan Wolfe *
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* https://blog.demofox.org/2015/01/17/bresenhams-drawing-algorithms *
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*****************************************************************************/
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#ifndef __LFBgraphics_include__
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#define __LFBgraphics_include__
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#include "devices/fonts/Fonts.h"
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// Hilfsfunktionen um Farbwerte fuer einen Pixel zu erzeugen
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#define RGB_24(r, g, b) (unsigned int)((r << 16) + (g << 8) + b)
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#define BUFFER_INVISIBLE 0
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#define BUFFER_VISIBLE 1
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class LFBgraphics {
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private:
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// Hilfsfunktion fuer drawString
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void drawMonoBitmap(unsigned int x, unsigned int y,
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unsigned int width, unsigned int height,
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const unsigned char* bitmap, unsigned int col) const;
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public:
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LFBgraphics(const LFBgraphics& copy) = delete; // Verhindere Kopieren
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LFBgraphics() : mode(BUFFER_VISIBLE) {};
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unsigned int xres, yres; // Aufloesung in Pixel
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unsigned int bpp; // Farbtiefe (Bits per Pixel)
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unsigned int lfb; // Adresse des Linearen Framebuffers
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unsigned int hfb; // Adresse des versteckten Buffers (optional, fuer Animationen)
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unsigned int mode; // Zeichnen im sichtbaren = 1 oder unsichtbaren = 0 Puffer
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void clear() const;
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void drawPixel(unsigned int x, unsigned int y, unsigned int col) const;
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void drawString(const Font& fnt, unsigned int x, unsigned int y, unsigned int col, const char* str, unsigned int len) const;
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void drawCircle(unsigned int x, unsigned int y, unsigned int rad, unsigned int col) const;
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void drawStraightLine(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2, unsigned int col) const;
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void drawRectangle(unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2, unsigned int col) const;
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void drawSprite(unsigned int width, unsigned int height, unsigned int bytes_pp, unsigned char* pixel_data) const;
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// stellt ein, ob in den sichtbaren Puffer gezeichnet wird
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void setDrawingBuff(int v);
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// kopiert 'hfb' nach 'lfb'
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void copyHiddenToVisible() const;
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};
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#endif
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