mirror of
https://github.com/RGBCube/serenity
synced 2025-07-26 01:27:43 +00:00
LibGUI: Take ProcessManager's process view and turn it into GTableView.
Make it sufficiently generic that it can be reused for any table data. :^)
This commit is contained in:
parent
b3ae1163ef
commit
dc9f8a9361
11 changed files with 173 additions and 88 deletions
33
LibGUI/GTableModel.cpp
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33
LibGUI/GTableModel.cpp
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@ -0,0 +1,33 @@
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#include <LibGUI/GTableModel.h>
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#include <LibGUI/GTableView.h>
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GTableModel::GTableModel()
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{
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}
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GTableModel::~GTableModel()
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{
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}
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void GTableModel::register_view(Badge<GTableView>, GTableView& view)
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{
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m_views.set(&view);
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}
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void GTableModel::unregister_view(Badge<GTableView>, GTableView& view)
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{
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m_views.remove(&view);
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}
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void GTableModel::for_each_view(Function<void(GTableView&)> callback)
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{
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for (auto* view : m_views)
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callback(*view);
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}
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void GTableModel::did_update()
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{
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for_each_view([] (GTableView& view) {
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view.did_update_model();
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});
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}
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@ -1,12 +1,16 @@
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#pragma once
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#include <AK/AKString.h>
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#include <AK/Badge.h>
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#include <AK/Function.h>
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#include <AK/HashTable.h>
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#include <LibGUI/GModelIndex.h>
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class GTableView;
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class GTableModel {
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public:
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GTableModel() { }
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virtual ~GTableModel() { }
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virtual ~GTableModel();
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virtual int row_count() const = 0;
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virtual int column_count() const = 0;
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@ -22,4 +26,16 @@ public:
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{
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return index.row() >= 0 && index.row() < row_count() && index.column() >= 0 && index.column() < column_count();
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}
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void register_view(Badge<GTableView>, GTableView&);
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void unregister_view(Badge<GTableView>, GTableView&);
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protected:
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GTableModel();
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void for_each_view(Function<void(GTableView&)>);
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void did_update();
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private:
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HashTable<GTableView*> m_views;
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};
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117
LibGUI/GTableView.cpp
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117
LibGUI/GTableView.cpp
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#include <LibGUI/GTableView.h>
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#include <LibGUI/GTableModel.h>
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#include <LibGUI/GScrollBar.h>
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#include <SharedGraphics/Painter.h>
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GTableView::GTableView(GWidget* parent)
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: GWidget(parent)
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{
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m_scrollbar = new GScrollBar(Orientation::Vertical, this);
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m_scrollbar->set_step(4);
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m_scrollbar->set_big_step(30);
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m_scrollbar->on_change = [this] (int) {
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update();
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};
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}
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GTableView::~GTableView()
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{
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}
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void GTableView::set_model(OwnPtr<GTableModel>&& model)
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{
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if (model.ptr() == m_model.ptr())
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return;
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if (m_model)
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m_model->unregister_view(Badge<GTableView>(), *this);
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m_model = move(model);
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if (m_model)
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m_model->register_view(Badge<GTableView>(), *this);
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}
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void GTableView::resize_event(GResizeEvent& event)
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{
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m_scrollbar->set_relative_rect(event.size().width() - m_scrollbar->preferred_size().width(), 0, m_scrollbar->preferred_size().width(), event.size().height());
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}
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void GTableView::did_update_model()
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{
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int excess_height = max(0, (item_count() * item_height()) - height());
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m_scrollbar->set_range(0, excess_height);
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update();
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}
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Rect GTableView::row_rect(int item_index) const
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{
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return { 0, header_height() + (item_index * item_height()), width(), item_height() };
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}
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void GTableView::mousedown_event(GMouseEvent& event)
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{
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auto adjusted_position = event.position().translated(0, m_scrollbar->value());
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if (event.button() == GMouseButton::Left) {
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for (int i = 0; i < item_count(); ++i) {
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if (!row_rect(i).contains(adjusted_position))
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continue;
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m_model->set_selected_index({ i, 0 });
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update();
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}
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}
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}
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void GTableView::paint_event(GPaintEvent&)
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{
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Painter painter(*this);
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painter.translate(0, -m_scrollbar->value());
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int horizontal_padding = 5;
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int painted_item_index = 0;
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int y_offset = header_height();
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for (int row_index = 0; row_index < m_model->row_count(); ++row_index) {
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int y = y_offset + painted_item_index * item_height();
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Color background_color;
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Color text_color;
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if (row_index == m_model->selected_index().row()) {
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background_color = Color::from_rgb(0x84351a);
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text_color = Color::White;
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} else {
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background_color = painted_item_index % 2 ? Color(210, 210, 210) : Color::White;
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text_color = Color::Black;
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}
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painter.fill_rect(row_rect(painted_item_index), background_color);
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int x_offset = 0;
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for (int column_index = 0; column_index < m_model->column_count(); ++column_index) {
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Rect cell_rect(horizontal_padding + x_offset, y, m_model->column_width(column_index), item_height());
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painter.draw_text(cell_rect, m_model->data(row_index, column_index), TextAlignment::CenterLeft, text_color);
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x_offset += m_model->column_width(column_index) + horizontal_padding;
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}
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++painted_item_index;
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};
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Rect unpainted_rect(0, painted_item_index * item_height(), width(), height());
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unpainted_rect.intersect(rect());
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painter.fill_rect(unpainted_rect, Color::White);
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// Untranslate the painter and paint the column headers.
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painter.translate(0, m_scrollbar->value());
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painter.fill_rect({ 0, 0, width(), header_height() }, Color::LightGray);
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int x_offset = 0;
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for (int column_index = 0; column_index < m_model->column_count(); ++column_index) {
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Rect cell_rect(horizontal_padding + x_offset, 0, m_model->column_width(column_index), item_height());
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painter.draw_text(cell_rect, m_model->column_name(column_index), TextAlignment::CenterLeft, Color::Black);
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x_offset += m_model->column_width(column_index) + horizontal_padding;
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}
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painter.draw_line({ 0, 0 }, { width() - 1, 0 }, Color::White);
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painter.draw_line({ 0, header_height() - 1 }, { width() - 1, header_height() - 1 }, Color::DarkGray);
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}
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int GTableView::item_count() const
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{
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return m_model->row_count();
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}
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34
LibGUI/GTableView.h
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34
LibGUI/GTableView.h
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#pragma once
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#include <LibGUI/GWidget.h>
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#include <AK/Function.h>
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#include <AK/HashMap.h>
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class GScrollBar;
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class GTableModel;
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class GTableView : public GWidget {
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public:
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explicit GTableView(GWidget* parent);
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virtual ~GTableView() override;
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virtual int header_height() const { return 16; }
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virtual int item_height() const { return 16; }
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void set_model(OwnPtr<GTableModel>&&);
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GTableModel* model() { return m_model.ptr(); }
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const GTableModel* model() const { return m_model.ptr(); }
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void did_update_model();
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private:
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virtual void paint_event(GPaintEvent&) override;
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virtual void resize_event(GResizeEvent&) override;
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virtual void mousedown_event(GMouseEvent&) override;
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int item_count() const;
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Rect row_rect(int item_index) const;
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GScrollBar* m_scrollbar { nullptr };
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OwnPtr<GTableModel> m_model;
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};
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@ -28,6 +28,8 @@ LIBGUI_OBJS = \
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GAction.o \
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GFontDatabase.o \
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GToolBar.o \
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GTableView.o \
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GTableModel.o \
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GWindow.o
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OBJS = $(SHAREDGRAPHICS_OBJS) $(LIBGUI_OBJS)
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