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Port Terminal to LibGUI.

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To facilitate listening for action on arbitrary file descriptors,
I've added a GNotifier class. It's quite simple but very useful:

GNotifier notifier(fd, GNotifier::Read);
notifier.on_ready_to_read = [this] (GNotifier& fd) {
    // read from fd or whatever else you like :^)
};

The callback will get invoked by GEventLoop when select() says we
have something to read on the fd.
This commit is contained in:
Andreas Kling 2019-02-10 14:28:39 +01:00
parent ae4811fbae
commit 53d34a0885
15 changed files with 268 additions and 151 deletions
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28
Applications/Terminal/Terminal.h
View file

@ -5,31 +5,33 @@
#include <AK/Vector.h>
#include <SharedGraphics/GraphicsBitmap.h>
#include <SharedGraphics/Rect.h>
#include <LibGUI/GWidget.h>
class Font;
class Terminal {
class Terminal final : public GWidget {
public:
Terminal();
~Terminal();
explicit Terminal(int ptm_fd);
virtual ~Terminal() override;
void create_window();
void paint();
void on_char(byte);
void set_in_active_window(bool);
void update();
void flush_dirty_lines();
private:
virtual void event(GEvent&) override;
virtual void paint_event(GPaintEvent&) override;
virtual void keydown_event(GKeyEvent&) override;
virtual const char* class_name() const override { return "Terminal"; }
Font& font() { return *m_font; }
void scroll_up();
void newline();
void set_cursor(unsigned row, unsigned column);
void put_character_at(unsigned row, unsigned column, byte ch);
void invalidate_cursor();
void did_paint(const Rect& = Rect());
void invalidate_window(const Rect& = Rect());
void set_window_title(const String&);
void set_window_title(String&&);
void inject_string(const String&);
void unimplemented_escape();
@ -83,7 +85,6 @@ private:
bool has_only_one_background_color() const;
byte* characters { nullptr };
Attribute* attributes { nullptr };
bool did_paint { false };
bool dirty { false };
word length { 0 };
};
@ -125,9 +126,6 @@ private:
byte* m_horizontal_tabs { nullptr };
bool m_belling { false };
int m_window_id { 0 };
RetainPtr<GraphicsBitmap> m_backing;
int m_pixel_width { 0 };
int m_pixel_height { 0 };
int m_rows_to_scroll_backing_store { 0 };
@ -136,8 +134,10 @@ private:
int m_line_spacing { 4 };
int m_line_height { 0 };
int m_ptm_fd { -1 };
bool m_in_active_window { false };
bool m_need_full_invalidation { false };
bool m_need_full_flush { false };
RetainPtr<Font> m_font;
};