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Kernel/Graphics: Implement basic cursor for FramebufferConsole

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Liav A 2022-05-06 03:19:27 +03:00 committed by Linus Groh
parent 00a0b1bd14
commit 0d784de3a6
Notes: sideshowbarker 2024-07-17 11:15:16 +09:00 
Author: https://github.com/supercomputer7
Commit: https://github.com/SerenityOS/serenity/commit/0d784de3a6
Pull-request: https://github.com/SerenityOS/serenity/pull/13924
2 changed files with 19 additions and 1 deletions
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17
Kernel/Graphics/Console/GenericFramebufferConsole.cpp
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@ -213,16 +213,31 @@ size_t GenericFramebufferConsoleImpl::chars_per_line() const
return width() / bytes_per_base_glyph();
}
void GenericFramebufferConsoleImpl::set_cursor(size_t, size_t)
void GenericFramebufferConsoleImpl::set_cursor(size_t x, size_t y)
{
hide_cursor();
m_x = x;
m_y = y;
show_cursor();
}
void GenericFramebufferConsoleImpl::hide_cursor()
{
auto* offset_in_framebuffer = (u32*)&framebuffer_data()[m_x * sizeof(u32) * m_pixels_per_column + m_y * m_pixels_per_row * framebuffer_pitch()];
offset_in_framebuffer = (u32*)((u8*)offset_in_framebuffer + framebuffer_pitch() * 15);
for (size_t current_x = 0; current_x < m_pixels_per_column; current_x++) {
offset_in_framebuffer[current_x] = m_cursor_overriden_pixels[current_x];
}
}
void GenericFramebufferConsoleImpl::show_cursor()
{
auto* offset_in_framebuffer = (u32*)&framebuffer_data()[m_x * sizeof(u32) * m_pixels_per_column + m_y * m_pixels_per_row * framebuffer_pitch()];
offset_in_framebuffer = (u32*)((u8*)offset_in_framebuffer + framebuffer_pitch() * 15);
for (size_t current_x = 0; current_x < m_pixels_per_column; current_x++) {
m_cursor_overriden_pixels[current_x] = offset_in_framebuffer[current_x];
memset(offset_in_framebuffer + current_x, 0xff, 4);
}
}
void GenericFramebufferConsoleImpl::clear(size_t x, size_t y, size_t length)

3
Kernel/Graphics/Console/GenericFramebufferConsole.h
View file

@ -43,6 +43,7 @@ protected:
: Console(width, height)
, m_pitch(pitch)
{
m_cursor_overriden_pixels.fill(0);
}
virtual u8* framebuffer_data() = 0;
size_t framebuffer_pitch() const { return m_pitch; }
@ -51,6 +52,8 @@ protected:
size_t const m_pixels_per_column { 8 };
size_t const m_pixels_per_row { 16 };
Array<u32, 8> m_cursor_overriden_pixels;
size_t m_pitch;
};