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LibGUI+WindowServer: Implement drag-to-select behavior in GTextEditor.

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To make this feel right, I needed to start passing keyboard modifiers along
with mouse events. That allows shift-clicking to extend the selection. :^)
This commit is contained in:
Andreas Kling 2019-03-08 17:53:02 +01:00
parent 6d172725c0
commit f40d11f06d
11 changed files with 73 additions and 21 deletions
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4
LibGUI/GTextEditor.h
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@ -24,6 +24,7 @@ public:
void set_column(int column) { m_column = column; }
bool operator==(const GTextPosition& other) const { return m_line == other.m_line && m_column == other.m_column; }
bool operator!=(const GTextPosition& other) const { return m_line != other.m_line || m_column != other.m_column; }
bool operator<(const GTextPosition& other) const { return m_line < other.m_line || (m_line == other.m_line && m_column < other.m_column); }
private:
@ -64,6 +65,8 @@ private:
virtual void paint_event(GPaintEvent&) override;
virtual void resize_event(GResizeEvent&) override;
virtual void mousedown_event(GMouseEvent&) override;
virtual void mouseup_event(GMouseEvent&) override;
virtual void mousemove_event(GMouseEvent&) override;
virtual void keydown_event(GKeyEvent&) override;
virtual void focusin_event(GEvent&) override;
virtual void focusout_event(GEvent&) override;
@ -116,6 +119,7 @@ private:
Vector<OwnPtr<Line>> m_lines;
GTextPosition m_cursor;
bool m_cursor_state { true };
bool m_in_drag_select { false };
int m_line_spacing { 2 };
GTextPosition m_selection_start;
};