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GTextEditor: Add selected_text() function.

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I don't have a clipboard to actually put the copied selection onto yet,
so just print the selected text to stdout so we can see what it is.
This commit is contained in:
Andreas Kling 2019-03-08 01:59:59 +01:00
parent 77359a5360
commit 6576ac8332
3 changed files with 33 additions and 5 deletions
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33
LibGUI/GTextEditor.cpp
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@ -3,6 +3,7 @@
#include <LibGUI/GFontDatabase.h>
#include <SharedGraphics/Painter.h>
#include <Kernel/KeyCode.h>
#include <AK/StringBuilder.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
@ -272,22 +273,22 @@ void GTextEditor::keydown_event(GKeyEvent& event)
}
return;
}
if (event.key() == KeyCode::Key_Home) {
if (!event.ctrl() && event.key() == KeyCode::Key_Home) {
toggle_selection_if_needed_for_event(event);
set_cursor(m_cursor.line(), 0);
return;
}
if (event.key() == KeyCode::Key_End) {
if (!event.ctrl() && event.key() == KeyCode::Key_End) {
toggle_selection_if_needed_for_event(event);
set_cursor(m_cursor.line(), current_line().length());
return;
}
if (event.key() == KeyCode::Key_Home) {
if (event.ctrl() && event.key() == KeyCode::Key_Home) {
toggle_selection_if_needed_for_event(event);
set_cursor(0, 0);
return;
}
if (event.key() == KeyCode::Key_End) {
if (event.ctrl() && event.key() == KeyCode::Key_End) {
toggle_selection_if_needed_for_event(event);
set_cursor(line_count() - 1, m_lines[line_count() - 1]->length());
return;
@ -571,3 +572,27 @@ bool GTextEditor::write_to_file(const String& path)
close(fd);
return true;
}
String GTextEditor::selected_text() const
{
if (!has_selection())
return { };
auto normalized_selection_start = m_selection_start;
auto normalized_selection_end = m_cursor;
if (m_cursor < m_selection_start)
swap(normalized_selection_start, normalized_selection_end);
StringBuilder builder;
for (int i = normalized_selection_start.line(); i <= normalized_selection_end.line(); ++i) {
auto& line = *m_lines[i];
int selection_start_column_on_line = normalized_selection_start.line() == i ? normalized_selection_start.column() : 0;
int selection_end_column_on_line = normalized_selection_end.line() == i ? normalized_selection_end.column() : line.length();
builder.append(line.characters() + selection_start_column_on_line, selection_end_column_on_line - selection_start_column_on_line);
if (i != normalized_selection_end.line())
builder.append('\n');
}
return builder.to_string();
}