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| author | Felix Morgner <felix.morgner@ost.ch> | 2026-04-16 10:29:30 +0200 |
|---|---|---|
| committer | Felix Morgner <felix.morgner@ost.ch> | 2026-04-29 09:05:04 +0200 |
| commit | 1b964278762dde86b0b737bd9a34fec569339f54 (patch) | |
| tree | 7fe0f4707e05f46461f03744d178f413b7bbca28 /arch/x86_64/src/vga/text/buffer.cpp | |
| parent | d906d70c94c2a40d5fc6fd26056c7bc57d540002 (diff) | |
| download | teachos-1b964278762dde86b0b737bd9a34fec569339f54.tar.xz teachos-1b964278762dde86b0b737bd9a34fec569339f54.zip | |
x86_64: use p1204 project layout
Diffstat (limited to 'arch/x86_64/src/vga/text/buffer.cpp')
| -rw-r--r-- | arch/x86_64/src/vga/text/buffer.cpp | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/arch/x86_64/src/vga/text/buffer.cpp b/arch/x86_64/src/vga/text/buffer.cpp deleted file mode 100644 index 498b9a3..0000000 --- a/arch/x86_64/src/vga/text/buffer.cpp +++ /dev/null @@ -1,101 +0,0 @@ -#include <arch/vga/text/buffer.hpp> - -#include <arch/vga/text/attribute.hpp> - -#include <algorithm> -#include <bit> -#include <cstddef> -#include <span> -#include <string_view> -#include <utility> - -namespace arch::vga::text -{ - buffer::buffer(std::size_t width, std::size_t height, cell * start, std::size_t position) - : m_width{width} - , m_height{height} - , m_buffer{start, m_width * m_height} - , m_position{position} - {} - - auto buffer::clear() -> void - { - m_position = 0; - std::ranges::fill(m_buffer, std::pair{'\0', static_cast<std::byte>(0x00)}); - } - - auto buffer::write(std::string_view code_points, attribute attribute) -> void - { - std::ranges::for_each(code_points, [&](auto code_point) -> void { write(code_point, attribute); }); - } - - auto buffer::write(char code_point, attribute attribute) -> void - { - if (m_position + 1 > m_height * m_width) - { - scroll(); - } - - if (!handle_special_code_point(code_point, attribute)) - { - do_write(code_point, attribute); - } - }; - - auto buffer::newline() -> void - { - auto free_glyphs_in_line = m_width - column(); - m_position += free_glyphs_in_line; - } - - auto buffer::scroll(std::size_t nof_lines) -> void - { - auto scroll_count = std::min(nof_lines, m_height); - - auto scroll_start = m_buffer.begin() + (scroll_count * m_width); - std::ranges::move(scroll_start, m_buffer.end(), m_buffer.begin()); - - auto clear_start = m_buffer.begin() + (m_height - scroll_count) * m_width; - std::ranges::fill(clear_start, m_buffer.end(), cell{}); - - m_position = (line() - scroll_count) * m_width; - } - - auto buffer::column() const noexcept -> std::ptrdiff_t - { - return m_position % m_width; - } - - auto buffer::line() const noexcept -> std::ptrdiff_t - { - return m_position / m_width; - } - auto buffer::handle_special_code_point(char code_point, attribute attribute) -> bool - { - switch (code_point) - { - case '\n': - newline(); - return true; - case '\r': - m_position -= column(); - return true; - case '\t': - do_write(" ", attribute); - return true; - default: - return false; - } - } - - auto buffer::do_write(std::string_view code_points, attribute attribute) -> void - { - std::ranges::for_each(code_points, [&](auto code_point) -> void { do_write(code_point, attribute); }); - } - - auto buffer::do_write(char code_point, attribute attribute) -> void - { - m_buffer[m_position++] = std::pair{code_point, std::bit_cast<std::byte>(attribute)}; - } - -} // namespace arch::vga::text |
