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Code Issues Activity Actions

TextEditor: Show the current cursor position in the statusbar.

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This commit is contained in:
Andreas Kling 2019-03-07 00:46:29 +01:00
parent 9158de6c41
commit ca65ca2f2d
3 changed files with 31 additions and 20 deletions
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4
Applications/TextEditor/main.cpp
View file

@ -25,6 +25,10 @@ int main(int argc, char** argv)
auto* text_editor = new GTextEditor(widget);
auto* statusbar = new GStatusBar(widget);
text_editor->on_cursor_change = [statusbar] (GTextEditor& editor) {
statusbar->set_text(String::format("Line: %d, Column: %d", editor.cursor().line(), editor.cursor().column()));
};
{
StringBuilder builder;
int fd = open("/home/anon/ReadMe.md", O_RDONLY);

39
LibGUI/GTextEditor.cpp
View file

@ -7,7 +7,7 @@
GTextEditor::GTextEditor(GWidget* parent)
: GWidget(parent)
{
set_font(GFontDatabase::the().get_by_name("Liza Thin"));
set_font(GFontDatabase::the().get_by_name("Csilla Thin"));
set_fill_with_background_color(false);
@ -48,7 +48,7 @@ void GTextEditor::set_text(const String& text)
add_line(i);
}
add_line(i);
m_cursor = GTextPosition(0, 0);
set_cursor(0, 0);
update();
}
@ -116,35 +116,31 @@ void GTextEditor::keydown_event(GKeyEvent& event)
{
if (event.key() == KeyCode::Key_Up) {
if (m_cursor.line() > 0) {
update_cursor();
m_cursor.set_line(m_cursor.line() - 1);
m_cursor.set_column(min(m_cursor.column(), m_lines[m_cursor.line()].length()));
update_cursor();
int new_line = m_cursor.line() - 1;
int new_column = min(m_cursor.column(), m_lines[new_line].length());
set_cursor(new_line, new_column);
}
return;
}
if (event.key() == KeyCode::Key_Down) {
if (m_cursor.line() < (m_lines.size() - 1)) {
update_cursor();
m_cursor.set_line(m_cursor.line() + 1);
m_cursor.set_column(min(m_cursor.column(), m_lines[m_cursor.line()].length()));
update_cursor();
int new_line = m_cursor.line() + 1;
int new_column = min(m_cursor.column(), m_lines[new_line].length());
set_cursor(new_line, new_column);
}
return;
}
if (event.key() == KeyCode::Key_Left) {
if (m_cursor.column() > 0) {
update_cursor();
m_cursor.set_column(m_cursor.column() - 1);
update_cursor();
int new_column = m_cursor.column() - 1;
set_cursor(m_cursor.line(), new_column);
}
return;
}
if (event.key() == KeyCode::Key_Right) {
if (m_cursor.column() < (m_lines[m_cursor.line()].length())) {
update_cursor();
m_cursor.set_column(m_cursor.column() + 1);
update_cursor();
int new_column = m_cursor.column() + 1;
set_cursor(m_cursor.line(), new_column);
}
return;
}
@ -210,6 +206,17 @@ void GTextEditor::update_cursor()
update();
}
void GTextEditor::set_cursor(int line, int column)
{
if (m_cursor.line() == line && m_cursor.column() == column)
return;
update_cursor();
m_cursor = GTextPosition(line, column);
update_cursor();
if (on_cursor_change)
on_cursor_change(*this);
}
void GTextEditor::Line::set_text(const String& text)
{
if (text == m_text)

8
LibGUI/GTextEditor.h
View file

@ -33,16 +33,15 @@ public:
explicit GTextEditor(GWidget* parent);
virtual ~GTextEditor() override;
Function<void(GTextEditor&)> on_cursor_change;
void set_text(const String&);
int content_width() const;
Rect visible_content_rect() const;
void scroll_into_view(const GTextPosition&, Orientation);
int line_count() const { return m_lines.size(); }
int padding() const { return 2; }
GTextPosition cursor() const { return m_cursor; }
private:
virtual void paint_event(GPaintEvent&) override;
@ -55,6 +54,7 @@ private:
Rect line_content_rect(int item_index) const;
Rect cursor_content_rect() const;
void update_cursor();
void set_cursor(int line, int column);
GScrollBar* m_vertical_scrollbar { nullptr };
GScrollBar* m_horizontal_scrollbar { nullptr };