ladybird/Userland/Libraries/LibVT/TerminalWidget.h
Daniel Bertalan ce9460de59 Kernel+LibVT: Fix selection with scrollback wrap-around
If lines are removed from the tail of the scrollback buffer, the
previous line indices will refer to different lines; therefore we need
to offset them.
2021-06-10 17:18:02 +02:00

223 lines
6.7 KiB
C++

/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/String.h>
#include <LibCore/ConfigFile.h>
#include <LibCore/ElapsedTimer.h>
#include <LibCore/Notifier.h>
#include <LibCore/Timer.h>
#include <LibGUI/Frame.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/Rect.h>
#include <LibVT/Color.h>
#include <LibVT/Range.h>
#include <LibVT/Terminal.h>
namespace VT {
class TerminalWidget final
: public GUI::Frame
, public VT::TerminalClient {
C_OBJECT(TerminalWidget);
public:
TerminalWidget(int ptm_fd, bool automatic_size_policy, RefPtr<Core::ConfigFile> config);
virtual ~TerminalWidget() override;
void set_pty_master_fd(int fd);
void inject_string(const StringView& string)
{
m_terminal.inject_string(string);
flush_dirty_lines();
}
void flush_dirty_lines();
void apply_size_increments_to_window(GUI::Window&);
void set_opacity(u8);
float opacity() { return m_opacity; };
enum class BellMode {
Visible,
AudibleBeep,
Disabled
};
BellMode bell_mode() { return m_bell_mode; }
void set_bell_mode(BellMode bm) { m_bell_mode = bm; };
RefPtr<Core::ConfigFile> config() const { return m_config; }
bool has_selection() const;
bool selection_contains(const VT::Position&) const;
String selected_text() const;
VT::Range normalized_selection() const { return m_selection.normalized(); }
void set_selection(const VT::Range& selection);
VT::Position buffer_position_at(const Gfx::IntPoint&) const;
VT::Range find_next(const StringView&, const VT::Position& start = {}, bool case_sensitivity = false, bool should_wrap = false);
VT::Range find_previous(const StringView&, const VT::Position& start = {}, bool case_sensitivity = false, bool should_wrap = false);
void scroll_to_bottom();
void scroll_to_row(int);
bool is_scrollable() const;
int scroll_length() const;
size_t max_history_size() const { return m_terminal.max_history_size(); }
void set_max_history_size(size_t value) { m_terminal.set_max_history_size(value); }
GUI::Action& copy_action() { return *m_copy_action; }
GUI::Action& paste_action() { return *m_paste_action; }
GUI::Action& clear_including_history_action() { return *m_clear_including_history_action; }
void copy();
void paste();
void clear_including_history();
const StringView color_scheme_name() const { return m_color_scheme_name; }
Function<void(const StringView&)> on_title_change;
Function<void(const Gfx::IntSize&)> on_terminal_size_change;
Function<void()> on_command_exit;
GUI::Menu& context_menu() { return *m_context_menu; }
constexpr Gfx::Color terminal_color_to_rgb(VT::Color) const;
void set_font_and_resize_to_fit(const Gfx::Font&);
void set_color_scheme(const StringView&);
private:
// ^GUI::Widget
virtual void event(Core::Event&) override;
virtual void paint_event(GUI::PaintEvent&) override;
virtual void resize_event(GUI::ResizeEvent&) override;
virtual void keydown_event(GUI::KeyEvent&) override;
virtual void keyup_event(GUI::KeyEvent&) override;
virtual void mousedown_event(GUI::MouseEvent&) override;
virtual void mouseup_event(GUI::MouseEvent&) override;
virtual void mousemove_event(GUI::MouseEvent&) override;
virtual void mousewheel_event(GUI::MouseEvent&) override;
virtual void doubleclick_event(GUI::MouseEvent&) override;
virtual void focusin_event(GUI::FocusEvent&) override;
virtual void focusout_event(GUI::FocusEvent&) override;
virtual void context_menu_event(GUI::ContextMenuEvent&) override;
virtual void drop_event(GUI::DropEvent&) override;
virtual void leave_event(Core::Event&) override;
virtual void did_change_font() override;
// ^TerminalClient
virtual void beep() override;
virtual void set_window_title(const StringView&) override;
virtual void set_window_progress(int value, int max) override;
virtual void terminal_did_resize(u16 columns, u16 rows) override;
virtual void terminal_history_changed(int delta) override;
virtual void emit(const u8*, size_t) override;
virtual void set_cursor_style(CursorStyle) override;
void set_logical_focus(bool);
void send_non_user_input(const ReadonlyBytes&);
Gfx::IntRect glyph_rect(u16 row, u16 column);
Gfx::IntRect row_rect(u16 row);
Gfx::IntSize widget_size_for_font(const Gfx::Font&) const;
void update_cursor();
void invalidate_cursor();
void relayout(const Gfx::IntSize&);
void update_copy_action();
void update_paste_action();
Gfx::IntSize compute_base_size() const;
int first_selection_column_on_row(int row) const;
int last_selection_column_on_row(int row) const;
u32 code_point_at(const VT::Position&) const;
VT::Position next_position_after(const VT::Position&, bool should_wrap) const;
VT::Position previous_position_before(const VT::Position&, bool should_wrap) const;
VT::Terminal m_terminal;
VT::Range m_selection;
String m_hovered_href;
String m_hovered_href_id;
String m_active_href;
String m_active_href_id;
// Snapshot of m_hovered_href when opening a context menu for a hyperlink.
String m_context_menu_href;
unsigned m_colors[256];
Gfx::Color m_default_foreground_color;
Gfx::Color m_default_background_color;
bool m_show_bold_text_as_bright { true };
String m_color_scheme_name;
BellMode m_bell_mode { BellMode::Visible };
bool m_alt_key_held { false };
bool m_rectangle_selection { false };
int m_pixel_width { 0 };
int m_pixel_height { 0 };
int m_inset { 2 };
int m_line_spacing { 4 };
int m_line_height { 0 };
int m_ptm_fd { -1 };
bool m_has_logical_focus { false };
bool m_in_relayout { false };
RefPtr<Core::Notifier> m_notifier;
u8 m_opacity { 255 };
bool m_cursor_blink_state { true };
bool m_automatic_size_policy { false };
VT::CursorStyle m_cursor_style { BlinkingBlock };
enum class AutoScrollDirection {
None,
Up,
Down
};
AutoScrollDirection m_auto_scroll_direction { AutoScrollDirection::None };
RefPtr<Core::Timer> m_cursor_blink_timer;
RefPtr<Core::Timer> m_visual_beep_timer;
RefPtr<Core::Timer> m_auto_scroll_timer;
RefPtr<Core::ConfigFile> m_config;
RefPtr<GUI::Scrollbar> m_scrollbar;
RefPtr<GUI::Action> m_copy_action;
RefPtr<GUI::Action> m_paste_action;
RefPtr<GUI::Action> m_clear_including_history_action;
RefPtr<GUI::Menu> m_context_menu;
RefPtr<GUI::Menu> m_context_menu_for_hyperlink;
Core::ElapsedTimer m_triple_click_timer;
Gfx::IntPoint m_left_mousedown_position;
};
}