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LibVT: Support RGB colors (\x1b[38;2;<r>;<g>;<b>m)

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AnotherTest 2020-05-10 12:11:03 +04:30 committed by Andreas Kling
parent ccdef5a675
commit 8487806ec0
Notes: sideshowbarker 2024-07-19 06:46:35 +09:00 
Author: https://github.com/alimpfard
Commit: https://github.com/SerenityOS/serenity/commit/8487806ec01
Pull-request: https://github.com/SerenityOS/serenity/pull/2170
4 changed files with 48 additions and 22 deletions
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42
Libraries/LibVT/Terminal.cpp
View file

@ -174,13 +174,37 @@ void Terminal::SGR(const ParamVector& params)
m_current_attribute.reset();
return;
}
if (params.size() == 3 && params[1] == 5) {
if (params[0] == 38) {
m_current_attribute.foreground_color = params[2];
return;
} else if (params[0] == 48) {
m_current_attribute.background_color = params[2];
return;
if (params.size() >= 3) {
bool should_set = true;
auto kind = params[1];
u32 color = 0;
switch (kind) {
case 5: // 8-bit
color = xterm_colors[params[2]];
break;
case 2: // 24-bit
for (size_t i = 0; i < 3; ++i) {
u8 component = 0;
if (params.size() - 2 > i) {
component = params[i + 2];
}
color <<= 8;
color |= component;
}
break;
default:
should_set = false;
break;
}
if (should_set) {
if (params[0] == 38) {
m_current_attribute.foreground_color = color;
return;
} else if (params[0] == 48) {
m_current_attribute.background_color = color;
return;
}
}
}
for (auto param : params) {
@ -230,7 +254,7 @@ void Terminal::SGR(const ParamVector& params)
// Foreground color
if (m_current_attribute.flags & Attribute::Bold)
param += 8;
m_current_attribute.foreground_color = param - 30;
m_current_attribute.foreground_color = xterm_colors[param - 30];
break;
case 39:
// reset foreground
@ -247,7 +271,7 @@ void Terminal::SGR(const ParamVector& params)
// Background color
if (m_current_attribute.flags & Attribute::Bold)
param += 8;
m_current_attribute.background_color = param - 40;
m_current_attribute.background_color = xterm_colors[param - 40];
break;
case 49:
// reset background

12
Libraries/LibVT/Terminal.h
View file

@ -31,12 +31,13 @@
#include <AK/String.h>
#include <AK/Vector.h>
#include <LibVT/Position.h>
#include <LibVT/XtermColors.h>
namespace VT {
class TerminalClient {
public:
virtual ~TerminalClient() {}
virtual ~TerminalClient() { }
virtual void beep() = 0;
virtual void set_window_title(const StringView&) = 0;
@ -48,8 +49,8 @@ public:
struct Attribute {
Attribute() { reset(); }
static const u8 default_foreground_color = 7;
static const u8 default_background_color = 0;
static const u32 default_foreground_color = xterm_colors[7];
static const u32 default_background_color = xterm_colors[0];
void reset()
{
@ -57,8 +58,8 @@ struct Attribute {
background_color = default_background_color;
flags = Flags::NoAttributes;
}
u8 foreground_color;
u8 background_color;
u32 foreground_color;
u32 background_color;
String href;
String href_id;
@ -110,6 +111,7 @@ public:
struct Line {
AK_MAKE_NONCOPYABLE(Line);
AK_MAKE_NONMOVABLE(Line);
public:
explicit Line(u16 columns);
~Line();

14
Libraries/LibVT/TerminalWidget.cpp
View file

@ -146,9 +146,9 @@ TerminalWidget::~TerminalWidget()
{
}
static inline Color lookup_color(unsigned color)
static inline Color color_from_rgb(unsigned color)
{
return Color::from_rgb(xterm_colors[color]);
return Color::from_rgb(color);
}
Gfx::Rect TerminalWidget::glyph_rect(u16 row, u16 column)
@ -349,7 +349,7 @@ void TerminalWidget::paint_event(GUI::PaintEvent& event)
if (m_visual_beep_timer->is_active())
painter.clear_rect(row_rect, Color::Red);
else if (has_only_one_background_color)
painter.clear_rect(row_rect, lookup_color(line.attributes[0].background_color).with_alpha(m_opacity));
painter.clear_rect(row_rect, color_from_rgb(line.attributes[0].background_color).with_alpha(m_opacity));
// The terminal insists on thinking characters and
// bytes are the same thing. We want to still draw
@ -385,14 +385,14 @@ void TerminalWidget::paint_event(GUI::PaintEvent& event)
auto character_rect = glyph_rect(row, column);
auto cell_rect = character_rect.inflated(0, m_line_spacing);
if (!has_only_one_background_color || should_reverse_fill_for_cursor_or_selection) {
painter.clear_rect(cell_rect, lookup_color(should_reverse_fill_for_cursor_or_selection ? attribute.foreground_color : attribute.background_color).with_alpha(m_opacity));
painter.clear_rect(cell_rect, color_from_rgb(should_reverse_fill_for_cursor_or_selection ? attribute.foreground_color : attribute.background_color).with_alpha(m_opacity));
}
bool should_paint_underline = attribute.flags & VT::Attribute::Underline
|| (!m_hovered_href.is_empty() && m_hovered_href_id == attribute.href_id);
if (should_paint_underline)
painter.draw_line(cell_rect.bottom_left(), cell_rect.bottom_right(), lookup_color(should_reverse_fill_for_cursor_or_selection ? attribute.background_color : attribute.foreground_color));
painter.draw_line(cell_rect.bottom_left(), cell_rect.bottom_right(), color_from_rgb(should_reverse_fill_for_cursor_or_selection ? attribute.background_color : attribute.foreground_color));
}
if (codepoint == ' ')
@ -405,7 +405,7 @@ void TerminalWidget::paint_event(GUI::PaintEvent& event)
character_rect.location(),
codepoint,
attribute.flags & VT::Attribute::Bold ? bold_font() : font(),
lookup_color(should_reverse_fill_for_cursor_or_selection ? attribute.background_color : attribute.foreground_color));
color_from_rgb(should_reverse_fill_for_cursor_or_selection ? attribute.background_color : attribute.foreground_color));
}
}
@ -413,7 +413,7 @@ void TerminalWidget::paint_event(GUI::PaintEvent& event)
auto& cursor_line = line_for_visual_row(row_with_cursor);
if (m_terminal.cursor_row() < (m_terminal.rows() - rows_from_history)) {
auto cell_rect = glyph_rect(row_with_cursor, m_terminal.cursor_column()).inflated(0, m_line_spacing);
painter.draw_rect(cell_rect, lookup_color(cursor_line.attributes[m_terminal.cursor_column()].foreground_color));
painter.draw_rect(cell_rect, color_from_rgb(cursor_line.attributes[m_terminal.cursor_column()].foreground_color));
}
}
}

2
Libraries/LibVT/XtermColors.h
View file

@ -26,7 +26,7 @@
#pragma once
static const unsigned xterm_colors[256] = {
static constexpr unsigned xterm_colors[256] = {
0x000000,
0xcc0000,
0x3e9a06,