christoph/lecture-operating-system-development
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BufferedCGA refactoring

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This commit is contained in:
churl
2022-05-17 18:38:52 +02:00
parent 7506cc40b9
commit 80cbe0900d
3 changed files with 10 additions and 22 deletions
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10
c_os/lib/ScrollbackBuffer.h
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@ -23,9 +23,9 @@ public:
ScrollbackBuffer(unsigned char rows, unsigned char pages)
: pos(0), pages(pages), rows(rows * pages) {
this->buffer = new CGA::cga_page_t[pages];
this->pagebuffer = new CGA::cga_page_t;
this->clear(); // Null out the buffer so no crap gets displayed
this->buffer = new CGA::cga_page_t[pages]; // Allocate with new because it's quite large,
this->pagebuffer = new CGA::cga_page_t; // also I wanted to use the new memory manager.
this->clear(); // Null out the buffer so no crap gets displayed.
}
~ScrollbackBuffer() {
delete[] this->buffer;
@ -34,8 +34,8 @@ public:
void put(CGA::cga_line_t* line);
void get(CGA::cga_line_t* destination, unsigned char page) const;
void copy_from_pagebuffer(CGA::cga_page_t* destination) const;
void copy_to_pagebuffer(CGA::cga_page_t* source);
void save_screen(CGA::cga_page_t* destination) const; // Do not lose video memory when scrolling
void restore_screen(CGA::cga_page_t* source);
void clear();
};