/* * Copyright (c) 2018-2020, Andreas Kling * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include #include namespace GUI { TableView::TableView() { set_fill_with_background_color(true); set_background_role(ColorRole::Base); set_foreground_role(ColorRole::BaseText); } TableView::~TableView() { } void TableView::paint_event(PaintEvent& event) { Color widget_background_color = palette().color(background_role()); Frame::paint_event(event); Painter painter(*this); painter.add_clip_rect(frame_inner_rect()); painter.add_clip_rect(event.rect()); if (fill_with_background_color()) painter.fill_rect(event.rect(), widget_background_color); painter.translate(frame_thickness(), frame_thickness()); painter.translate(-horizontal_scrollbar().value(), -vertical_scrollbar().value()); if (!model()) return; int exposed_width = max(content_size().width(), width()); int y_offset = header_height(); bool dummy; int first_visible_row = index_at_event_position(frame_inner_rect().top_left(), dummy).row(); int last_visible_row = index_at_event_position(frame_inner_rect().bottom_right(), dummy).row(); if (first_visible_row == -1) first_visible_row = 0; if (last_visible_row == -1) last_visible_row = model()->row_count() - 1; int painted_item_index = first_visible_row; for (int row_index = first_visible_row; row_index <= last_visible_row; ++row_index) { bool is_selected_row = selection().contains_row(row_index); int y = y_offset + painted_item_index * item_height(); Color background_color; Color key_column_background_color; if (is_selected_row) { background_color = is_focused() ? palette().selection() : palette().inactive_selection(); key_column_background_color = is_focused() ? palette().selection() : palette().inactive_selection(); } else { if (alternating_row_colors() && (painted_item_index % 2)) { background_color = widget_background_color.darkened(0.8f); key_column_background_color = widget_background_color.darkened(0.7f); } else { background_color = widget_background_color; key_column_background_color = widget_background_color.darkened(0.9f); } } painter.fill_rect(row_rect(painted_item_index), background_color); int x_offset = 0; for (int column_index = 0; column_index < model()->column_count(); ++column_index) { if (is_column_hidden(column_index)) continue; int column_width = this->column_width(column_index); bool is_key_column = model()->key_column() == column_index; Gfx::IntRect cell_rect(horizontal_padding() + x_offset, y, column_width, item_height()); auto cell_rect_for_fill = cell_rect.inflated(horizontal_padding() * 2, 0); if (is_key_column) painter.fill_rect(cell_rect_for_fill, key_column_background_color); auto cell_index = model()->index(row_index, column_index); if (auto* delegate = column_data(column_index).cell_painting_delegate.ptr()) { delegate->paint(painter, cell_rect, palette(), *model(), cell_index); } else { auto data = model()->data(cell_index); if (data.is_bitmap()) { painter.blit(cell_rect.location(), data.as_bitmap(), data.as_bitmap().rect()); } else if (data.is_icon()) { if (auto bitmap = data.as_icon().bitmap_for_size(16)) { if (m_hovered_index.is_valid() && cell_index.row() == m_hovered_index.row()) painter.blit_brightened(cell_rect.location(), *bitmap, bitmap->rect()); else painter.blit(cell_rect.location(), *bitmap, bitmap->rect()); } } else { Color text_color; if (is_selected_row) text_color = is_focused() ? palette().selection_text() : palette().inactive_selection_text(); else text_color = model()->data(cell_index, Model::Role::ForegroundColor).to_color(palette().color(foreground_role())); if (!is_selected_row) { auto cell_background_color = model()->data(cell_index, Model::Role::BackgroundColor); if (cell_background_color.is_valid()) painter.fill_rect(cell_rect_for_fill, cell_background_color.to_color(background_color)); } auto text_alignment = model()->data(cell_index, Model::Role::TextAlignment).to_text_alignment(Gfx::TextAlignment::CenterLeft); painter.draw_text(cell_rect, data.to_string(), font_for_index(cell_index), text_alignment, text_color, Gfx::TextElision::Right); } } x_offset += column_width + horizontal_padding() * 2; } ++painted_item_index; }; Gfx::IntRect unpainted_rect(0, header_height() + painted_item_index * item_height(), exposed_width, height()); if (fill_with_background_color()) painter.fill_rect(unpainted_rect, widget_background_color); // Untranslate the painter vertically and do the column headers. painter.translate(0, vertical_scrollbar().value()); if (headers_visible()) paint_headers(painter); } void TableView::keydown_event(KeyEvent& event) { if (!model()) return; auto& model = *this->model(); if (event.key() == KeyCode::Key_Return) { activate_selected(); return; } if (event.key() == KeyCode::Key_Up) { move_selection(-1); return; } if (event.key() == KeyCode::Key_Down) { move_selection(1); return; } if (event.key() == KeyCode::Key_PageUp) { int items_per_page = visible_content_rect().height() / item_height(); auto old_index = selection().first(); auto new_index = model.index(max(0, old_index.row() - items_per_page), old_index.column()); if (model.is_valid(new_index)) { selection().set(new_index); scroll_into_view(new_index, Orientation::Vertical); update(); } return; } if (event.key() == KeyCode::Key_PageDown) { int items_per_page = visible_content_rect().height() / item_height(); auto old_index = selection().first(); auto new_index = model.index(min(model.row_count() - 1, old_index.row() + items_per_page), old_index.column()); if (model.is_valid(new_index)) { selection().set(new_index); scroll_into_view(new_index, Orientation::Vertical); update(); } return; } return Widget::keydown_event(event); } }