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serenity/Libraries/LibGUI/GTableView.h
Andreas Kling 191535d626 LibGUI: Make the GTableView column headers behave like proper buttons
Previously they would resort based on the column immediately when you
mousedown on them. Now we track the click event and show the header
in a pressed state, etc. The usual button stuff :^)
2019-11-20 22:11:43 +01:00

100 lines
3.3 KiB
C++

#pragma once
#include <AK/Function.h>
#include <AK/HashMap.h>
#include <LibGUI/GAbstractView.h>
#include <LibGUI/GModel.h>
class GPainter;
class GScrollBar;
class Painter;
class GTableCellPaintingDelegate {
public:
virtual ~GTableCellPaintingDelegate() {}
virtual void paint(GPainter&, const Rect&, const GModel&, const GModelIndex&) = 0;
};
class GTableView : public GAbstractView {
C_OBJECT(GTableView)
public:
virtual ~GTableView() override;
int header_height() const { return m_headers_visible ? 16 : 0; }
int item_height() const { return 16; }
bool headers_visible() const { return m_headers_visible; }
void set_headers_visible(bool headers_visible) { m_headers_visible = headers_visible; }
bool alternating_row_colors() const { return m_alternating_row_colors; }
void set_alternating_row_colors(bool b) { m_alternating_row_colors = b; }
int content_width() const;
int horizontal_padding() const { return m_horizontal_padding; }
void scroll_into_view(const GModelIndex&, Orientation);
bool is_column_hidden(int) const;
void set_column_hidden(int, bool);
void set_size_columns_to_fit_content(bool b) { m_size_columns_to_fit_content = b; }
bool size_columns_to_fit_content() const { return m_size_columns_to_fit_content; }
Point adjusted_position(const Point&) const;
virtual Rect content_rect(const GModelIndex&) const override;
void set_cell_painting_delegate(int column, OwnPtr<GTableCellPaintingDelegate>&&);
protected:
explicit GTableView(GWidget* parent);
virtual void did_update_model() override;
virtual void paint_event(GPaintEvent&) override;
virtual void mousedown_event(GMouseEvent&) override;
virtual void mousemove_event(GMouseEvent&) override;
virtual void mouseup_event(GMouseEvent&) override;
virtual void doubleclick_event(GMouseEvent&) override;
virtual void keydown_event(GKeyEvent&) override;
virtual void leave_event(CEvent&) override;
virtual void context_menu_event(GContextMenuEvent&) override;
GModelIndex index_at_event_position(const Point&) const;
Rect content_rect(int row, int column) const;
void paint_headers(Painter&);
int item_count() const;
Rect row_rect(int item_index) const;
Rect header_rect(int) const;
Rect column_resize_grabbable_rect(int) const;
int column_width(int) const;
void update_content_size();
void update_column_sizes();
static const Font& header_font();
void update_headers();
struct ColumnData {
int width { 0 };
bool has_initialized_width { false };
bool visibility { true };
RefPtr<GAction> visibility_action;
OwnPtr<GTableCellPaintingDelegate> cell_painting_delegate;
};
ColumnData& column_data(int column) const;
mutable Vector<ColumnData> m_column_data;
int m_horizontal_padding { 5 };
bool m_headers_visible { true };
bool m_alternating_row_colors { true };
bool m_size_columns_to_fit_content { false };
bool m_in_column_resize { false };
Point m_column_resize_origin;
int m_column_resize_original_width { 0 };
int m_resizing_column { -1 };
int m_pressed_column_header_index { -1 };
bool m_pressed_column_header_is_pressed { false };
GMenu& ensure_header_context_menu();
OwnPtr<GMenu> m_header_context_menu;
};