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Add auto-scroll behavior when selecting text outside the visible area in RichTextLabel
This commit is contained in:
AndrewYuan34
parent
42c7f14422
commit
4774b57e4d
2 changed files with 132 additions and 80 deletions
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@ -2596,6 +2596,11 @@ void RichTextLabel::gui_input(const Ref<InputEvent> &p_event) {
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deselect();
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}
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}
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if (!selection.drag_attempt) {
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is_selecting_text = true;
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click_select_held->start();
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}
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}
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}
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} else if (b->is_pressed() && b->is_double_click() && selection.enabled) {
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@ -2677,6 +2682,9 @@ void RichTextLabel::gui_input(const Ref<InputEvent> &p_event) {
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}
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}
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}
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is_selecting_text = false;
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click_select_held->stop();
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}
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}
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@ -2865,95 +2873,119 @@ void RichTextLabel::gui_input(const Ref<InputEvent> &p_event) {
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Ref<InputEventMouseMotion> m = p_event;
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if (m.is_valid()) {
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ItemFrame *c_frame = nullptr;
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int c_line = 0;
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Item *c_item = nullptr;
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int c_index = 0;
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bool outside;
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local_mouse_pos = get_local_mouse_position();
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last_clamped_mouse_pos = local_mouse_pos.clamp(Vector2(), get_size());
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}
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}
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_find_click(main, m->get_position(), &c_frame, &c_line, &c_item, &c_index, &outside, false);
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if (selection.click_item && c_item) {
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selection.from_frame = selection.click_frame;
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selection.from_line = selection.click_line;
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selection.from_item = selection.click_item;
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selection.from_char = selection.click_char;
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void RichTextLabel::_update_selection() {
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ItemFrame *c_frame = nullptr;
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int c_line = 0;
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Item *c_item = nullptr;
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int c_index = 0;
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bool outside;
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selection.to_frame = c_frame;
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selection.to_line = c_line;
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selection.to_item = c_item;
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selection.to_char = c_index;
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bool swap = false;
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if (selection.click_frame && c_frame) {
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const Line &l1 = c_frame->lines[c_line];
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const Line &l2 = selection.click_frame->lines[selection.click_line];
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if (l1.char_offset + c_index < l2.char_offset + selection.click_char) {
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swap = true;
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} else if (l1.char_offset + c_index == l2.char_offset + selection.click_char && !selection.double_click) {
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deselect();
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return;
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}
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}
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if (swap) {
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SWAP(selection.from_frame, selection.to_frame);
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SWAP(selection.from_line, selection.to_line);
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SWAP(selection.from_item, selection.to_item);
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SWAP(selection.from_char, selection.to_char);
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}
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if (selection.double_click && c_frame) {
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// Expand the selection to word edges.
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Line *l = &selection.from_frame->lines[selection.from_line];
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MutexLock lock(l->text_buf->get_mutex());
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PackedInt32Array words = TS->shaped_text_get_word_breaks(l->text_buf->get_rid());
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for (int i = 0; i < words.size(); i = i + 2) {
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if (selection.from_char > words[i] && selection.from_char < words[i + 1]) {
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selection.from_char = words[i];
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break;
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}
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}
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l = &selection.to_frame->lines[selection.to_line];
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lock = MutexLock(l->text_buf->get_mutex());
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words = TS->shaped_text_get_word_breaks(l->text_buf->get_rid());
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for (int i = 0; i < words.size(); i = i + 2) {
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if (selection.to_char > words[i] && selection.to_char < words[i + 1]) {
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selection.to_char = words[i + 1];
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break;
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}
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}
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}
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selection.active = true;
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queue_accessibility_update();
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queue_redraw();
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// Handle auto scrolling.
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const Size2 size = get_size();
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if (!(local_mouse_pos.x >= 0.0 && local_mouse_pos.y >= 0.0 &&
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local_mouse_pos.x < size.x && local_mouse_pos.y < size.y)) {
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real_t scroll_delta = 0.0;
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if (local_mouse_pos.y < 0) {
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scroll_delta = -auto_scroll_speed * (1 - (local_mouse_pos.y / 15.0));
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} else if (local_mouse_pos.y > size.y) {
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scroll_delta = auto_scroll_speed * (1 + (local_mouse_pos.y - size.y) / 15.0);
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}
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_find_click(main, m->get_position(), nullptr, nullptr, &c_item, nullptr, &outside, true);
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Variant meta;
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ItemMeta *item_meta;
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ItemMeta *prev_meta = meta_hovering;
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if (c_item && !outside && _find_meta(c_item, &meta, &item_meta)) {
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if (meta_hovering != item_meta) {
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if (meta_hovering) {
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emit_signal(SNAME("meta_hover_ended"), current_meta);
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}
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meta_hovering = item_meta;
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current_meta = meta;
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emit_signal(SNAME("meta_hover_started"), meta);
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if ((item_meta && item_meta->underline == META_UNDERLINE_ON_HOVER) || (prev_meta && prev_meta->underline == META_UNDERLINE_ON_HOVER)) {
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queue_redraw();
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if (scroll_delta != 0.0) {
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vscroll->scroll(scroll_delta);
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queue_redraw();
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}
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}
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// Update selection area.
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_find_click(main, last_clamped_mouse_pos, &c_frame, &c_line, &c_item, &c_index, &outside, false);
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if (selection.click_item && c_item) {
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selection.from_frame = selection.click_frame;
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selection.from_line = selection.click_line;
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selection.from_item = selection.click_item;
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selection.from_char = selection.click_char;
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selection.to_frame = c_frame;
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selection.to_line = c_line;
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selection.to_item = c_item;
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selection.to_char = c_index;
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bool swap = false;
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if (selection.click_frame && c_frame) {
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const Line &l1 = c_frame->lines[c_line];
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const Line &l2 = selection.click_frame->lines[selection.click_line];
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if (l1.char_offset + c_index < l2.char_offset + selection.click_char) {
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swap = true;
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} else if (l1.char_offset + c_index == l2.char_offset + selection.click_char && !selection.double_click) {
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deselect();
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return;
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}
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}
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if (swap) {
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SWAP(selection.from_frame, selection.to_frame);
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SWAP(selection.from_line, selection.to_line);
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SWAP(selection.from_item, selection.to_item);
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SWAP(selection.from_char, selection.to_char);
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}
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if (selection.double_click && c_frame) {
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// Expand the selection to word edges.
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Line *l = &selection.from_frame->lines[selection.from_line];
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MutexLock lock(l->text_buf->get_mutex());
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PackedInt32Array words = TS->shaped_text_get_word_breaks(l->text_buf->get_rid());
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for (int i = 0; i < words.size(); i = i + 2) {
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if (selection.from_char > words[i] && selection.from_char < words[i + 1]) {
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selection.from_char = words[i];
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break;
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}
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}
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} else if (meta_hovering) {
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meta_hovering = nullptr;
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emit_signal(SNAME("meta_hover_ended"), current_meta);
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current_meta = false;
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if (prev_meta->underline == META_UNDERLINE_ON_HOVER) {
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l = &selection.to_frame->lines[selection.to_line];
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lock = MutexLock(l->text_buf->get_mutex());
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words = TS->shaped_text_get_word_breaks(l->text_buf->get_rid());
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for (int i = 0; i < words.size(); i = i + 2) {
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if (selection.to_char > words[i] && selection.to_char < words[i + 1]) {
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selection.to_char = words[i + 1];
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break;
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}
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}
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}
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selection.active = true;
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queue_accessibility_update();
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queue_redraw();
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}
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// Update meta hovering.
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_find_click(main, local_mouse_pos, nullptr, nullptr, &c_item, nullptr, &outside, true);
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Variant meta;
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ItemMeta *item_meta;
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ItemMeta *prev_meta = meta_hovering;
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if (c_item && !outside && _find_meta(c_item, &meta, &item_meta)) {
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if (meta_hovering != item_meta) {
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if (meta_hovering) {
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emit_signal(SNAME("meta_hover_ended"), current_meta);
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}
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meta_hovering = item_meta;
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current_meta = meta;
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emit_signal(SNAME("meta_hover_started"), meta);
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if ((item_meta && item_meta->underline == META_UNDERLINE_ON_HOVER) || (prev_meta && prev_meta->underline == META_UNDERLINE_ON_HOVER)) {
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queue_redraw();
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}
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}
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} else if (meta_hovering) {
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meta_hovering = nullptr;
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emit_signal(SNAME("meta_hover_ended"), current_meta);
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current_meta = false;
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if (prev_meta->underline == META_UNDERLINE_ON_HOVER) {
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queue_redraw();
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}
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}
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}
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@ -7783,6 +7815,11 @@ RichTextLabel::RichTextLabel(const String &p_text) {
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parsing_bbcode.store(false);
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set_clip_contents(true);
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click_select_held = memnew(Timer);
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add_child(click_select_held, false, INTERNAL_MODE_FRONT);
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click_select_held->set_wait_time(0.05);
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click_select_held->connect("timeout", callable_mp(this, &RichTextLabel::_update_selection));
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}
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RichTextLabel::~RichTextLabel() {
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@ -36,6 +36,10 @@
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#include "scene/gui/scroll_bar.h"
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#include "scene/resources/text_paragraph.h"
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#ifdef TOOLS_ENABLED
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#include "editor/themes/editor_scale.h"
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#endif
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class CharFXTransform;
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class RichTextEffect;
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@ -667,6 +671,17 @@ private:
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void _scroll_changed(double);
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int _find_first_line(int p_from, int p_to, int p_vofs) const;
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#ifdef TOOLS_ENABLED
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const real_t auto_scroll_speed = EDSCALE * 2.0f;
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#else
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const real_t auto_scroll_speed = 2.0f;
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#endif
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Vector2 last_clamped_mouse_pos;
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Timer *click_select_held = nullptr;
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Vector2 local_mouse_pos;
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bool is_selecting_text = false;
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void _update_selection();
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_FORCE_INLINE_ float _calculate_line_vertical_offset(const Line &line) const;
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virtual void gui_input(const Ref<InputEvent> &p_event) override;
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