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TextEditor: Visualize leading whitespace

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This commit is contained in:
lucastarche 2021-03-17 13:52:42 -03:00 committed by Andreas Kling
parent f6892d1ede
commit 6d3d097832
Notes: sideshowbarker 2024-07-18 21:05:57 +09:00 
Author: https://github.com/lucastarche
Commit: https://github.com/SerenityOS/serenity/commit/6d3d0978324
Pull-request: https://github.com/SerenityOS/serenity/pull/5859
2 changed files with 27 additions and 0 deletions
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23
Userland/Libraries/LibGUI/TextEditor.cpp
View File

@ -640,6 +640,21 @@ void TextEditor::paint_event(PaintEvent& event)
}
}
if (m_visualize_leading_whitespace && line.leading_spaces() > 0) {
size_t physical_column = line.leading_spaces();
size_t end_of_leading_whitespace = (start_of_visual_line + physical_column);
size_t end_of_visual_line = (start_of_visual_line + visual_line_text.length());
if (end_of_leading_whitespace < end_of_visual_line) {
Gfx::IntRect whitespace_rect {
content_x_for_position({ line_index, start_of_visual_line }),
visual_line_rect.y(),
font().width(visual_line_text.substring_view(0, end_of_leading_whitespace)),
visual_line_rect.height()
};
painter.fill_rect_with_dither_pattern(whitespace_rect, Color(), Color(192, 255, 192));
}
}
if (physical_line_has_selection) {
size_t start_of_selection_within_visual_line = (size_t)max(0, (int)selection_start_column_within_line - (int)start_of_visual_line);
size_t end_of_selection_within_visual_line = selection_end_column_within_line - start_of_visual_line;
@ -1764,6 +1779,14 @@ void TextEditor::set_visualize_trailing_whitespace(bool enabled)
update();
}
void TextEditor::set_visualize_leading_whitespace(bool enabled)
{
if (m_visualize_leading_whitespace == enabled)
return;
m_visualize_leading_whitespace = enabled;
update();
}
void TextEditor::set_should_autocomplete_automatically(bool value)
{
if (value == should_autocomplete_automatically())

4
Userland/Libraries/LibGUI/TextEditor.h
View File

@ -81,6 +81,9 @@ public:
void set_visualize_trailing_whitespace(bool);
bool visualize_trailing_whitespace() const { return m_visualize_trailing_whitespace; }
void set_visualize_leading_whitespace(bool);
bool visualize_leading_whitespace() const { return m_visualize_leading_whitespace; }
virtual bool is_automatic_indentation_enabled() const final { return m_automatic_indentation_enabled; }
void set_automatic_indentation_enabled(bool enabled) { m_automatic_indentation_enabled = enabled; }
@ -319,6 +322,7 @@ private:
bool m_automatic_indentation_enabled { false };
WrappingMode m_wrapping_mode { WrappingMode::NoWrap };
bool m_visualize_trailing_whitespace { true };
bool m_visualize_leading_whitespace { false };
int m_line_spacing { 4 };
size_t m_soft_tab_width { 4 };
int m_horizontal_content_padding { 3 };