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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <AK/StringBuilder.h>
28#include <Kernel/KeyCode.h>
29#include <LibGfx/Palette.h>
30#include <LibGUI/Action.h>
31#include <LibGUI/Menu.h>
32#include <LibGUI/Model.h>
33#include <LibGUI/Painter.h>
34#include <LibGUI/ScrollBar.h>
35#include <LibGUI/TableView.h>
36#include <LibGUI/TextBox.h>
37#include <LibGUI/Window.h>
38
39namespace GUI {
40
41TableView::TableView()
42{
43 set_background_role(ColorRole::Base);
44 set_foreground_role(ColorRole::BaseText);
45}
46
47TableView::~TableView()
48{
49}
50
51void TableView::paint_event(PaintEvent& event)
52{
53 Color widget_background_color = palette().color(background_role());
54 Frame::paint_event(event);
55
56 Painter painter(*this);
57 painter.add_clip_rect(frame_inner_rect());
58 painter.add_clip_rect(event.rect());
59 painter.fill_rect(event.rect(), widget_background_color);
60 painter.translate(frame_thickness(), frame_thickness());
61 painter.translate(-horizontal_scrollbar().value(), -vertical_scrollbar().value());
62
63 if (!model())
64 return;
65
66 int exposed_width = max(content_size().width(), width());
67 int y_offset = header_height();
68
69 bool dummy;
70 int first_visible_row = index_at_event_position(frame_inner_rect().top_left(), dummy).row();
71 int last_visible_row = index_at_event_position(frame_inner_rect().bottom_right(), dummy).row();
72
73 if (first_visible_row == -1)
74 first_visible_row = 0;
75 if (last_visible_row == -1)
76 last_visible_row = model()->row_count() - 1;
77
78 int painted_item_index = first_visible_row;
79
80 for (int row_index = first_visible_row; row_index <= last_visible_row; ++row_index) {
81 bool is_selected_row = selection().contains_row(row_index);
82 int y = y_offset + painted_item_index * item_height();
83
84 Color background_color;
85 Color key_column_background_color;
86 if (is_selected_row) {
87 background_color = is_focused() ? palette().selection() : palette().inactive_selection();
88 key_column_background_color = is_focused() ? palette().selection() : palette().inactive_selection();
89 } else {
90 if (alternating_row_colors() && (painted_item_index % 2)) {
91 background_color = widget_background_color.darkened(0.8f);
92 key_column_background_color = widget_background_color.darkened(0.7f);
93 } else {
94 background_color = widget_background_color;
95 key_column_background_color = widget_background_color.darkened(0.9f);
96 }
97 }
98 painter.fill_rect(row_rect(painted_item_index), background_color);
99
100 int x_offset = 0;
101 for (int column_index = 0; column_index < model()->column_count(); ++column_index) {
102 if (is_column_hidden(column_index))
103 continue;
104 auto column_metadata = model()->column_metadata(column_index);
105 int column_width = this->column_width(column_index);
106 const Gfx::Font& font = column_metadata.font ? *column_metadata.font : this->font();
107 bool is_key_column = model()->key_column() == column_index;
108 Gfx::Rect cell_rect(horizontal_padding() + x_offset, y, column_width, item_height());
109 if (is_key_column) {
110 auto cell_rect_for_fill = cell_rect.inflated(horizontal_padding() * 2, 0);
111 painter.fill_rect(cell_rect_for_fill, key_column_background_color);
112 }
113 auto cell_index = model()->index(row_index, column_index);
114
115 if (auto* delegate = column_data(column_index).cell_painting_delegate.ptr()) {
116 delegate->paint(painter, cell_rect, palette(), *model(), cell_index);
117 } else {
118 auto data = model()->data(cell_index);
119 if (data.is_bitmap()) {
120 painter.blit(cell_rect.location(), data.as_bitmap(), data.as_bitmap().rect());
121 } else if (data.is_icon()) {
122 if (auto bitmap = data.as_icon().bitmap_for_size(16))
123 painter.blit(cell_rect.location(), *bitmap, bitmap->rect());
124 } else {
125 Color text_color;
126 if (is_selected_row)
127 text_color = is_focused() ? palette().selection_text() : palette().inactive_selection_text();
128 else
129 text_color = model()->data(cell_index, Model::Role::ForegroundColor).to_color(palette().color(foreground_role()));
130 painter.draw_text(cell_rect, data.to_string(), font, column_metadata.text_alignment, text_color, Gfx::TextElision::Right);
131 }
132 }
133 x_offset += column_width + horizontal_padding() * 2;
134 }
135 ++painted_item_index;
136 };
137
138 Gfx::Rect unpainted_rect(0, header_height() + painted_item_index * item_height(), exposed_width, height());
139 painter.fill_rect(unpainted_rect, widget_background_color);
140
141 // Untranslate the painter vertically and do the column headers.
142 painter.translate(0, vertical_scrollbar().value());
143 if (headers_visible())
144 paint_headers(painter);
145}
146
147}