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GTableView: Add a way to hide the column headers.

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There are many situations where you would want a table view without headers.
This commit is contained in:
Andreas Kling 2019-03-15 14:50:36 +01:00
parent a23dddc56f
commit a5d538b389
2 changed files with 34 additions and 17 deletions
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40
LibGUI/GTableView.cpp
View file

@ -19,6 +19,9 @@ GTableView::GTableView(GWidget* parent)
m_horizontal_scrollbar->on_change = [this] (int) {
update();
};
m_corner_widget = new GWidget(this);
m_corner_widget->set_fill_with_background_color(true);
}
GTableView::~GTableView()
@ -41,6 +44,7 @@ void GTableView::resize_event(GResizeEvent& event)
update_scrollbar_ranges();
m_vertical_scrollbar->set_relative_rect(event.size().width() - m_vertical_scrollbar->preferred_size().width(), 0, m_vertical_scrollbar->preferred_size().width(), event.size().height() - m_horizontal_scrollbar->preferred_size().height());
m_horizontal_scrollbar->set_relative_rect(0, event.size().height() - m_horizontal_scrollbar->preferred_size().height(), event.size().width() - m_vertical_scrollbar->preferred_size().width(), m_horizontal_scrollbar->preferred_size().height());
m_corner_widget->set_relative_rect(m_horizontal_scrollbar->rect().right() + 1, m_vertical_scrollbar->rect().bottom() + 1, m_horizontal_scrollbar->height(), m_vertical_scrollbar->width());
}
void GTableView::update_scrollbar_ranges()
@ -135,6 +139,7 @@ void GTableView::paint_event(GPaintEvent& event)
{
Painter painter(*this);
painter.set_clip_rect(event.rect());
painter.save();
painter.translate(-m_horizontal_scrollbar->value(), -m_vertical_scrollbar->value());
int exposed_width = max(content_width(), width());
@ -181,8 +186,27 @@ void GTableView::paint_event(GPaintEvent& event)
Rect unpainted_rect(0, header_height() + painted_item_index * item_height(), exposed_width, height());
painter.fill_rect(unpainted_rect, Color::White);
// Untranslate the painter and paint the column headers.
// Untranslate the painter vertically and do the column headers.
painter.translate(0, m_vertical_scrollbar->value());
if (headers_visible())
paint_headers(painter);
painter.restore();
if (is_focused()) {
Rect item_area_rect {
0,
header_height(),
width() - m_vertical_scrollbar->width(),
height() - header_height() - m_horizontal_scrollbar->height()
};
painter.draw_rect(item_area_rect, Color::from_rgb(0x84351a));
};
}
void GTableView::paint_headers(Painter& painter)
{
int exposed_width = max(content_width(), width());
painter.fill_rect({ 0, 0, exposed_width, header_height() }, Color::LightGray);
painter.draw_line({ 0, 0 }, { exposed_width - 1, 0 }, Color::White);
painter.draw_line({ 0, header_height() - 1 }, { exposed_width - 1, header_height() - 1 }, Color::DarkGray);
@ -203,20 +227,6 @@ void GTableView::paint_event(GPaintEvent& event)
}
// Draw the "start" of a new column to make the last separator look right.
painter.draw_line({ x_offset, 1 }, { x_offset, header_height() - 2 }, Color::White);
// Then untranslate and fill in the scroll corner. This is pretty messy, tbh.
painter.translate(m_horizontal_scrollbar->value(), 0);
painter.fill_rect({ m_horizontal_scrollbar->relative_rect().top_right().translated(1, 0), { m_vertical_scrollbar->preferred_size().width(), m_horizontal_scrollbar->preferred_size().height() } }, Color::LightGray);
if (is_focused()) {
Rect item_area_rect {
0,
header_height(),
width() - m_vertical_scrollbar->width(),
height() - header_height() - m_horizontal_scrollbar->height()
};
painter.draw_rect(item_area_rect, Color::from_rgb(0x84351a));
};
}
int GTableView::item_count() const

11
LibGUI/GTableView.h
View file

@ -6,19 +6,23 @@
#include <AK/HashMap.h>
class GScrollBar;
class Painter;
class GTableView : public GWidget {
public:
explicit GTableView(GWidget* parent);
virtual ~GTableView() override;
virtual int header_height() const { return 16; }
virtual int item_height() const { return 16; }
int header_height() const { return m_headers_visible ? 16 : 0; }
int item_height() const { return 16; }
void set_model(OwnPtr<GTableModel>&&);
GTableModel* model() { return m_model.ptr(); }
const GTableModel* model() const { return m_model.ptr(); }
bool headers_visible() const { return m_headers_visible; }
void set_headers_visible(bool headers_visible) { m_headers_visible = headers_visible; }
void did_update_model();
int content_width() const;
@ -37,6 +41,7 @@ private:
virtual void mousedown_event(GMouseEvent&) override;
virtual void keydown_event(GKeyEvent&) override;
void paint_headers(Painter&);
void update_scrollbar_ranges();
int item_count() const;
Rect row_rect(int item_index) const;
@ -45,6 +50,8 @@ private:
GScrollBar* m_vertical_scrollbar { nullptr };
GScrollBar* m_horizontal_scrollbar { nullptr };
GWidget* m_corner_widget { nullptr };
OwnPtr<GTableModel> m_model;
int m_horizontal_padding { 5 };
bool m_headers_visible { true };
};