GTableView.cpp 4.9 KB

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  1. #include <AK/StringBuilder.h>
  2. #include <Kernel/KeyCode.h>
  3. #include <LibDraw/Palette.h>
  4. #include <LibGUI/GAction.h>
  5. #include <LibGUI/GMenu.h>
  6. #include <LibGUI/GModel.h>
  7. #include <LibGUI/GPainter.h>
  8. #include <LibGUI/GScrollBar.h>
  9. #include <LibGUI/GTableView.h>
  10. #include <LibGUI/GTextBox.h>
  11. #include <LibGUI/GWindow.h>
  12. GTableView::GTableView(GWidget* parent)
  13. : GAbstractColumnView(parent)
  14. {
  15. set_background_role(ColorRole::Base);
  16. }
  17. GTableView::~GTableView()
  18. {
  19. }
  20. void GTableView::paint_event(GPaintEvent& event)
  21. {
  22. Color widget_background_color = palette().color(background_role());
  23. GFrame::paint_event(event);
  24. GPainter painter(*this);
  25. painter.add_clip_rect(frame_inner_rect());
  26. painter.add_clip_rect(event.rect());
  27. painter.fill_rect(event.rect(), widget_background_color);
  28. painter.translate(frame_thickness(), frame_thickness());
  29. painter.translate(-horizontal_scrollbar().value(), -vertical_scrollbar().value());
  30. if (!model())
  31. return;
  32. int exposed_width = max(content_size().width(), width());
  33. int y_offset = header_height();
  34. bool dummy;
  35. int first_visible_row = index_at_event_position(frame_inner_rect().top_left(), dummy).row();
  36. int last_visible_row = index_at_event_position(frame_inner_rect().bottom_right(), dummy).row();
  37. if (first_visible_row == -1)
  38. first_visible_row = 0;
  39. if (last_visible_row == -1)
  40. last_visible_row = model()->row_count() - 1;
  41. int painted_item_index = first_visible_row;
  42. for (int row_index = first_visible_row; row_index <= last_visible_row; ++row_index) {
  43. bool is_selected_row = selection().contains_row(row_index);
  44. int y = y_offset + painted_item_index * item_height();
  45. Color background_color;
  46. Color key_column_background_color;
  47. if (is_selected_row) {
  48. background_color = is_focused() ? palette().selection() : Color::from_rgb(0x606060);
  49. key_column_background_color = is_focused() ? palette().selection() : Color::from_rgb(0x606060);
  50. } else {
  51. if (alternating_row_colors() && (painted_item_index % 2)) {
  52. background_color = widget_background_color.darkened(0.8f);
  53. key_column_background_color = widget_background_color.darkened(0.7f);
  54. } else {
  55. background_color = widget_background_color;
  56. key_column_background_color = widget_background_color.darkened(0.9f);
  57. }
  58. }
  59. painter.fill_rect(row_rect(painted_item_index), background_color);
  60. int x_offset = 0;
  61. for (int column_index = 0; column_index < model()->column_count(); ++column_index) {
  62. if (is_column_hidden(column_index))
  63. continue;
  64. auto column_metadata = model()->column_metadata(column_index);
  65. int column_width = this->column_width(column_index);
  66. const Font& font = column_metadata.font ? *column_metadata.font : this->font();
  67. bool is_key_column = model()->key_column() == column_index;
  68. Rect cell_rect(horizontal_padding() + x_offset, y, column_width, item_height());
  69. if (is_key_column) {
  70. auto cell_rect_for_fill = cell_rect.inflated(horizontal_padding() * 2, 0);
  71. painter.fill_rect(cell_rect_for_fill, key_column_background_color);
  72. }
  73. auto cell_index = model()->index(row_index, column_index);
  74. if (auto* delegate = column_data(column_index).cell_painting_delegate.ptr()) {
  75. delegate->paint(painter, cell_rect, palette(), *model(), cell_index);
  76. } else {
  77. auto data = model()->data(cell_index);
  78. if (data.is_bitmap()) {
  79. painter.blit(cell_rect.location(), data.as_bitmap(), data.as_bitmap().rect());
  80. } else if (data.is_icon()) {
  81. if (auto bitmap = data.as_icon().bitmap_for_size(16))
  82. painter.blit(cell_rect.location(), *bitmap, bitmap->rect());
  83. } else {
  84. Color text_color;
  85. if (is_selected_row)
  86. text_color = palette().selection_text();
  87. else
  88. text_color = model()->data(cell_index, GModel::Role::ForegroundColor).to_color(palette().color(foreground_role()));
  89. painter.draw_text(cell_rect, data.to_string(), font, column_metadata.text_alignment, text_color, TextElision::Right);
  90. }
  91. }
  92. x_offset += column_width + horizontal_padding() * 2;
  93. }
  94. ++painted_item_index;
  95. };
  96. Rect unpainted_rect(0, header_height() + painted_item_index * item_height(), exposed_width, height());
  97. painter.fill_rect(unpainted_rect, widget_background_color);
  98. // Untranslate the painter vertically and do the column headers.
  99. painter.translate(0, vertical_scrollbar().value());
  100. if (headers_visible())
  101. paint_headers(painter);
  102. }