32 lines
1.1 KiB
C++
Executable File
32 lines
1.1 KiB
C++
Executable File
#ifndef __SCROLLBACKBUFFER_INCLUDE_H_
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#define __SCROLLBACKBUFFER_INCLUDE_H_
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#include "devices/CGA.h"
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#include "user/lib/MyLib.h"
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#include <memory>
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#include <stddef.h>
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class ScrollbackBuffer {
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private:
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std::unique_ptr<CGA::cga_page_t[]> buffer; // Circular buffer to store lines that left the screen
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unsigned int pos; // Buffer write position
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ScrollbackBuffer(const ScrollbackBuffer&) = delete;
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public:
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const unsigned int pages; // Number of pages in buffer
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const unsigned int rows; // Number of lines in buffer
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ScrollbackBuffer(unsigned char rows, unsigned char pages)
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: pos(0), pages(pages), rows(rows * pages) {
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this->buffer = std::make_unique<CGA::cga_page_t[]>(pages); // Allocate with new because it's quite large (and I want to use the allocator)
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this->clear(); // Null out the buffer so no crap gets displayed
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}
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void put(CGA::cga_line_t* line);
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void get(CGA::cga_line_t* destination, unsigned char page) const;
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void clear();
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};
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#endif
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