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LibVT+Kernel: Create Color class

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Previously, we converted colors to their RGB values immediately when
they were set. This meant that their semantic meaning was lost, we could
not tell a precise RGB value apart from a named/indexed color.

The new way of storing colors will allow us to retain this information,
so we can change a color scheme on the fly, and previously emitted text
will also be affected.
This commit is contained in:
Daniel Bertalan 2021-05-27 19:19:30 +02:00 • committed by Linus Groh
parent 054c742d17
commit 99033876ec
7 changed files with 232 additions and 80 deletions
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89
Kernel/TTY/VirtualConsole.cpp
View file

@ -17,6 +17,7 @@
#include <Kernel/IO.h>
#include <Kernel/StdLib.h>
#include <Kernel/TTY/ConsoleManagement.h>
#include <LibVT/Color.h>
namespace Kernel {
@ -205,73 +206,55 @@ UNMAP_AFTER_INIT VirtualConsole::~VirtualConsole()
VERIFY_NOT_REACHED();
}
enum class ANSIColor : u8 {
Black = 0,
Red,
Green,
Brown,
Blue,
Magenta,
Cyan,
LightGray,
DarkGray,
BrightRed,
BrightGreen,
Yellow,
BrightBlue,
BrightMagenta,
BrightCyan,
White,
__Count,
};
static inline Graphics::Console::Color ansi_color_to_standard_vga_color(ANSIColor color)
static inline Graphics::Console::Color ansi_color_to_standard_vga_color(VT::Color::ANSIColor color)
{
switch (color) {
case ANSIColor::Black:
case VT::Color::ANSIColor::DefaultBackground:
case VT::Color::ANSIColor::Black:
return Graphics::Console::Color::Black;
case ANSIColor::Red:
case VT::Color::ANSIColor::Red:
return Graphics::Console::Color::Red;
case ANSIColor::Brown:
case VT::Color::ANSIColor::Green:
return Graphics::Console::Green;
case VT::Color::ANSIColor::Yellow:
// VGA only has bright yellow, and treats normal yellow as a brownish orange color.
return Graphics::Console::Color::Brown;
case ANSIColor::Blue:
case VT::Color::ANSIColor::Blue:
return Graphics::Console::Color::Blue;
case ANSIColor::Magenta:
case VT::Color::ANSIColor::Magenta:
return Graphics::Console::Color::Magenta;
case ANSIColor::Green:
return Graphics::Console::Color::Green;
case ANSIColor::Cyan:
case VT::Color::ANSIColor::Cyan:
return Graphics::Console::Color::Cyan;
case ANSIColor::LightGray:
return Graphics::Console::Color::LightGray;
case ANSIColor::DarkGray:
return Graphics::Console::Color::DarkGray;
case ANSIColor::BrightRed:
return Graphics::Console::Color::BrightRed;
case ANSIColor::BrightGreen:
return Graphics::Console::Color::BrightGreen;
case ANSIColor::Yellow:
return Graphics::Console::Color::Yellow;
case ANSIColor::BrightBlue:
return Graphics::Console::Color::BrightBlue;
case ANSIColor::BrightMagenta:
return Graphics::Console::Color::BrightMagenta;
case ANSIColor::BrightCyan:
return Graphics::Console::Color::BrightCyan;
case ANSIColor::White:
case VT::Color::ANSIColor::DefaultForeground:
case VT::Color::ANSIColor::White:
return Graphics::Console::Color::White;
case VT::Color::ANSIColor::BrightBlack:
return Graphics::Console::Color::LightGray;
case VT::Color::ANSIColor::BrightRed:
return Graphics::Console::Color::BrightRed;
case VT::Color::ANSIColor::BrightGreen:
return Graphics::Console::Color::BrightGreen;
case VT::Color::ANSIColor::BrightYellow:
return Graphics::Console::Color::Yellow;
case VT::Color::ANSIColor::BrightBlue:
return Graphics::Console::Color::BrightBlue;
case VT::Color::ANSIColor::BrightMagenta:
return Graphics::Console::Color::BrightMagenta;
case VT::Color::ANSIColor::BrightCyan:
return Graphics::Console::Color::BrightCyan;
default:
VERIFY_NOT_REACHED();
}
}
static inline Graphics::Console::Color xterm_to_standard_color(u32 color)
static inline Graphics::Console::Color terminal_to_standard_color(VT::Color color)
{
for (u8 i = 0; i < (u8)ANSIColor::__Count; i++) {
if (xterm_colors[i] == color)
return (Graphics::Console::Color)ansi_color_to_standard_vga_color((ANSIColor)i);
switch (color.kind()) {
case VT::Color::Kind::Named:
return ansi_color_to_standard_vga_color(color.as_named());
default:
return Graphics::Console::Color::LightGray;
}
return Graphics::Console::Color::LightGray;
}
void VirtualConsole::on_key_pressed(KeyEvent event)
@ -338,13 +321,13 @@ void VirtualConsole::flush_dirty_lines()
for (size_t column = 0; column < columns(); ++column) {
auto& cell = cell_at(column, visual_row);
auto foreground_color = xterm_to_standard_color(cell.attribute.effective_foreground_color());
auto foreground_color = terminal_to_standard_color(cell.attribute.effective_foreground_color());
if (cell.attribute.flags & VT::Attribute::Flags::Bold)
foreground_color = (Graphics::Console::Color)((u8)foreground_color | 0x08);
GraphicsManagement::the().console()->write(column,
visual_row,
((u8)cell.ch < 128 ? cell.ch : '?'),
xterm_to_standard_color(cell.attribute.effective_background_color()),
terminal_to_standard_color(cell.attribute.effective_background_color()),
foreground_color);
}
line.dirty = false;