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649 lines
20 KiB
C++
649 lines
20 KiB
C++
/**
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* Copyright (c) 2007-2012, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @file listview_curses.cc
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*/
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#include <cmath>
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#include "listview_curses.hh"
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#include <sys/time.h>
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#include <time.h>
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#include "base/lnav_log.hh"
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#include "config.h"
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list_gutter_source listview_curses::DEFAULT_GUTTER_SOURCE;
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listview_curses::listview_curses() : lv_scroll(noop_func{}) {}
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void
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listview_curses::reload_data()
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{
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if (this->lv_source == nullptr) {
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this->lv_top = 0_vl;
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this->lv_left = 0;
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} else {
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if (this->lv_top >= this->get_inner_height()) {
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this->lv_top
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= std::max(0_vl, vis_line_t(this->get_inner_height() - 1));
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}
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if (this->lv_selectable) {
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if (this->get_inner_height() == 0) {
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this->set_selection(0_vl);
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} else if (this->lv_selection >= this->get_inner_height()) {
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this->set_selection(this->get_inner_height() - 1_vl);
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} else {
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auto curr_sel = this->lv_selection;
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this->lv_selection = -1_vl;
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this->set_selection(curr_sel);
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}
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}
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}
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this->vc_needs_update = true;
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this->invoke_scroll();
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}
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bool
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listview_curses::handle_key(int ch)
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{
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for (auto& lv_input_delegate : this->lv_input_delegates) {
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if (lv_input_delegate->list_input_handle_key(*this, ch)) {
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return true;
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}
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}
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auto height = 0_vl;
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unsigned long width;
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bool retval = true;
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this->get_dimensions(height, width);
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switch (ch) {
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case 'l':
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case KEY_RIGHT:
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this->shift_left(width / 2);
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break;
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case 'h':
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case KEY_LEFT:
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this->shift_left(-(width / 2));
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break;
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case 'L':
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case KEY_SRIGHT:
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this->shift_left(10);
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break;
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case 'H':
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case KEY_SLEFT:
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this->shift_left(-10);
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break;
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case '\r':
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case 'j':
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case KEY_DOWN:
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if (this->is_selectable()) {
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this->shift_selection(1);
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} else {
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this->shift_top(1_vl);
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}
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break;
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case 'k':
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case KEY_UP:
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if (this->is_selectable()) {
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this->shift_selection(-1);
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} else {
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this->shift_top(-1_vl);
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}
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break;
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case 'b':
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case KEY_BACKSPACE:
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case KEY_PPAGE:
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if (this->lv_top == 0_vl && this->lv_selectable
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&& this->lv_selection != 0_vl)
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{
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this->set_selection(0_vl);
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} else {
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this->shift_top(
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-(this->rows_available(this->lv_top, RD_UP) - 1_vl));
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}
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break;
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case ' ':
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case KEY_NPAGE:
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this->shift_top(this->rows_available(this->lv_top, RD_DOWN) - 1_vl);
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break;
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case 'g':
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case KEY_HOME:
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if (this->is_selectable()) {
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this->set_selection(0_vl);
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} else {
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this->set_top(0_vl);
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}
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break;
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case 'G':
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case KEY_END: {
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vis_line_t last_line(this->get_inner_height() - 1);
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vis_line_t tail_bottom(this->get_top_for_last_row());
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if (this->is_selectable()) {
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this->set_selection(last_line);
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} else if (this->get_top() == last_line) {
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this->set_top(tail_bottom);
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} else if (tail_bottom <= this->get_top()) {
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this->set_top(last_line);
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} else {
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this->set_top(tail_bottom);
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}
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} break;
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case ']': {
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double tenth = ((double) this->get_inner_height()) / 10.0;
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this->shift_top(vis_line_t((int) tenth));
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} break;
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case '[':
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case 'B': {
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double tenth = ((double) this->get_inner_height()) / 10.0;
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this->shift_top(vis_line_t((int) -tenth));
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} break;
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default:
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retval = false;
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break;
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}
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return retval;
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}
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void
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listview_curses::do_update()
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{
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if (this->lv_window == nullptr || this->lv_height == 0) {
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view_curses::do_update();
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return;
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}
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vis_line_t height;
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unsigned long width;
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this->get_dimensions(height, width);
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if (this->lv_selectable) {
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if (this->lv_selection < 0_vl) {
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this->set_top(0_vl);
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} else if (this->lv_selection
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>= (this->lv_top + height - this->lv_tail_space - 1_vl))
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{
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this->set_top(
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this->lv_selection - height + 1_vl + this->lv_tail_space, true);
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} else if (this->lv_selection < this->lv_top) {
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this->set_top(this->lv_selection, true);
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}
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}
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while (this->vc_needs_update) {
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auto& vc = view_colors::singleton();
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vis_line_t row;
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attr_line_t overlay_line;
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struct line_range lr;
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unsigned long wrap_width;
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int y = this->lv_y, bottom;
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auto role_attrs = vc.attrs_for_role(this->vc_default_role);
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if (height <= 0) {
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return;
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}
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if (this->vc_width > 0) {
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width = std::min((unsigned long) this->vc_width, width);
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}
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wrap_width = width;
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if (this->lv_show_scrollbar) {
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wrap_width -= 1;
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}
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size_t row_count = this->get_inner_height();
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size_t blank_rows = 0;
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row = this->lv_top;
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bottom = y + height;
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std::vector<attr_line_t> rows(
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std::min((size_t) height, row_count - (int) this->lv_top));
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this->lv_source->listview_value_for_rows(*this, row, rows);
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while (y < bottom) {
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lr.lr_start = this->lv_left;
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lr.lr_end = this->lv_left + wrap_width;
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if (this->lv_overlay_source != nullptr
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&& this->lv_overlay_source->list_value_for_overlay(
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*this,
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y - this->lv_y,
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bottom - this->lv_y,
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row,
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overlay_line))
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{
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mvwattrline(this->lv_window, y, this->lv_x, overlay_line, lr);
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overlay_line.clear();
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++y;
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} else if (row < (int) row_count) {
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auto& al = rows[row - this->lv_top];
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size_t remaining = 0;
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do {
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remaining = mvwattrline(this->lv_window,
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y,
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this->lv_x,
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al,
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lr,
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this->vc_default_role);
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if (this->lv_word_wrap) {
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mvwhline(this->lv_window,
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y,
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this->lv_x + wrap_width,
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' ',
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width - wrap_width);
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}
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lr.lr_start += wrap_width;
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lr.lr_end += wrap_width;
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++y;
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} while (this->lv_word_wrap && y < bottom && remaining > 0);
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++row;
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} else {
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wattr_set(this->lv_window,
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role_attrs.ta_attrs,
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vc.ensure_color_pair(role_attrs.ta_fg_color,
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role_attrs.ta_bg_color),
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nullptr);
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mvwhline(this->lv_window, y, this->lv_x, ' ', width);
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++y;
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blank_rows += 1;
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}
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}
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if (this->lv_selectable && this->lv_selection >= 0
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&& (row > this->lv_tail_space) && (blank_rows < this->lv_tail_space)
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&& ((row - this->lv_tail_space) < this->lv_selection))
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{
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this->shift_top(this->lv_selection - row + this->lv_tail_space);
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continue;
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}
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if (this->lv_show_scrollbar) {
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double progress = 1.0;
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double coverage = 1.0;
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double adjusted_height = (double) row_count / (double) height;
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vis_line_t lines;
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if (row_count > 0) {
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progress = (double) this->lv_top / (double) row_count;
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coverage = (double) height / (double) row_count;
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}
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y = this->lv_y + (int) (progress * (double) height);
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lines = vis_line_t(
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y + std::min((int) height, (int) (coverage * (double) height)));
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for (unsigned int gutter_y = this->lv_y;
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gutter_y < (this->lv_y + height);
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gutter_y++)
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{
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int range_start = 0, range_end;
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role_t role = this->vc_default_role;
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role_t bar_role = role_t::VCR_SCROLLBAR;
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text_attrs attrs;
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chtype ch = ACS_VLINE;
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if (row_count > 0) {
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range_start
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= (double) (gutter_y - this->lv_y) * adjusted_height;
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}
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range_end = range_start + adjusted_height;
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this->lv_gutter_source->listview_gutter_value_for_range(
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*this, range_start, range_end, ch, role, bar_role);
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if (gutter_y >= (unsigned int) y
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&& gutter_y <= (unsigned int) lines)
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{
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role = bar_role;
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}
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attrs = vc.attrs_for_role(role);
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wattr_set(
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this->lv_window,
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attrs.ta_attrs,
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vc.ensure_color_pair(attrs.ta_fg_color, attrs.ta_bg_color),
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nullptr);
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mvwaddch(this->lv_window, gutter_y, this->lv_x + width - 1, ch);
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}
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wmove(this->lv_window, this->lv_y + height - 1, this->lv_x);
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}
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if (this->lv_show_bottom_border) {
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cchar_t row_ch[width];
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int y = this->lv_y + height - 1;
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mvwin_wchnstr(this->lv_window, y, this->lv_x, row_ch, width - 1);
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for (unsigned long lpc = 0; lpc < width - 1; lpc++) {
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row_ch[lpc].attr |= A_UNDERLINE;
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}
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mvwadd_wchnstr(this->lv_window, y, this->lv_x, row_ch, width - 1);
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}
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this->vc_needs_update = false;
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}
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view_curses::do_update();
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#if 0
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else if (this->lv_overlay_needs_update && this->lv_overlay_source != NULL) {
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vis_line_t y(this->lv_y), height, bottom;
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attr_line_t overlay_line;
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unsigned long width, wrap_width;
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struct line_range lr;
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this->lv_overlay_source->list_overlay_count(*this);
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this->get_dimensions(height, width);
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wrap_width = width - (this->lv_word_wrap ? 1 : this->lv_show_scrollbar ? 1 : 0);
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lr.lr_start = this->lv_left;
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lr.lr_end = this->lv_left + wrap_width;
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bottom = y + height;
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while (y < bottom) {
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if (this->lv_overlay_source->list_value_for_overlay(
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*this,
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y - vis_line_t(this->lv_y),
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overlay_line)) {
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this->mvwattrline(this->lv_window, y, this->lv_x, overlay_line, lr);
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overlay_line.clear();
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}
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++y;
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}
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}
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#endif
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}
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void
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listview_curses::shift_selection(int offset)
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{
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vis_line_t new_selection = this->lv_selection + vis_line_t(offset);
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if (new_selection >= 0_vl && new_selection < this->get_inner_height()) {
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this->set_selection(new_selection);
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}
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}
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static int
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scroll_polarity(mouse_button_t button)
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{
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return button == mouse_button_t::BUTTON_SCROLL_UP ? -1 : 1;
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}
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bool
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listview_curses::handle_mouse(mouse_event& me)
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{
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vis_line_t inner_height, height;
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struct timeval diff;
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unsigned long width;
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timersub(&me.me_time, &this->lv_mouse_time, &diff);
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this->get_dimensions(height, width);
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inner_height = this->get_inner_height();
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switch (me.me_button) {
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case mouse_button_t::BUTTON_SCROLL_UP:
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case mouse_button_t::BUTTON_SCROLL_DOWN:
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if (diff.tv_sec > 0 || diff.tv_usec > 80000) {
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this->lv_scroll_accel = 1;
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this->lv_scroll_velo = 0;
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} else {
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this->lv_scroll_accel += 2;
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}
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this->lv_scroll_velo += this->lv_scroll_accel;
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this->shift_top(vis_line_t(scroll_polarity(me.me_button)
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* this->lv_scroll_velo),
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true);
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break;
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default:
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break;
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}
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this->lv_mouse_time = me.me_time;
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if (me.me_button != mouse_button_t::BUTTON_LEFT || inner_height == 0
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|| (this->lv_mouse_mode != lv_mode_t::DRAG
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&& me.me_x < (int) (width - 2)))
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{
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return false;
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}
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if (me.me_state == mouse_button_state_t::BUTTON_STATE_RELEASED) {
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this->lv_mouse_y = -1;
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this->lv_mouse_mode = lv_mode_t::NONE;
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return true;
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}
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int scroll_top, scroll_bottom, shift_amount = 0, new_top = 0;
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double top_pct, bot_pct, pct;
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top_pct = (double) this->get_top() / (double) inner_height;
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bot_pct = (double) this->get_bottom() / (double) inner_height;
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scroll_top = (this->get_y() + (int) (top_pct * (double) height));
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scroll_bottom = (this->get_y() + (int) (bot_pct * (double) height));
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if (this->lv_mouse_mode == lv_mode_t::NONE) {
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if ((scroll_top - 1) <= me.me_y && me.me_y <= (scroll_bottom + 1)) {
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this->lv_mouse_mode = lv_mode_t::DRAG;
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this->lv_mouse_y = me.me_y - scroll_top;
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} else if (me.me_y < scroll_top) {
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this->lv_mouse_mode = lv_mode_t::UP;
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} else {
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this->lv_mouse_mode = lv_mode_t::DOWN;
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}
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}
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switch (this->lv_mouse_mode) {
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case lv_mode_t::NONE:
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require(0);
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break;
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case lv_mode_t::UP:
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if (me.me_y < scroll_top) {
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shift_amount = -1 * height;
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}
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break;
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case lv_mode_t::DOWN:
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if (me.me_y > scroll_bottom) {
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shift_amount = height;
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}
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break;
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case lv_mode_t::DRAG:
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pct = (double) inner_height / (double) height;
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new_top = me.me_y - this->get_y() - this->lv_mouse_y;
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new_top = (int) floor(((double) new_top * pct) + 0.5);
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this->set_top(vis_line_t(new_top));
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break;
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}
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if (shift_amount != 0) {
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this->shift_top(vis_line_t(shift_amount));
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}
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return true;
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}
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void
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listview_curses::set_top(vis_line_t top, bool suppress_flash)
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{
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auto inner_height = this->get_inner_height();
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if (inner_height > 0 && top >= inner_height) {
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top = vis_line_t(inner_height - 1);
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}
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if (top < 0 || (top > 0 && top >= inner_height)) {
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|
if (suppress_flash == false) {
|
|
alerter::singleton().chime("invalid top");
|
|
}
|
|
} else if (this->lv_top != top) {
|
|
auto old_top = this->lv_top;
|
|
this->lv_top = top;
|
|
if (this->lv_selectable) {
|
|
if (this->lv_selection < 0_vl) {
|
|
} else if (this->lv_selection < top) {
|
|
auto sel_diff = this->lv_selection - old_top;
|
|
this->set_selection(top + sel_diff);
|
|
} else {
|
|
auto sel_diff = this->lv_selection - old_top;
|
|
auto bot = this->get_bottom();
|
|
unsigned long width;
|
|
vis_line_t height;
|
|
|
|
this->get_dimensions(height, width);
|
|
|
|
if (bot != -1_vl && (bot - top) >= (height - 1)) {
|
|
if (this->lv_selection > (bot - this->lv_tail_space)) {
|
|
this->set_selection(top + sel_diff);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
this->invoke_scroll();
|
|
this->set_needs_update();
|
|
}
|
|
}
|
|
|
|
vis_line_t
|
|
listview_curses::get_bottom() const
|
|
{
|
|
auto retval = this->lv_top;
|
|
auto avail = this->rows_available(retval, RD_DOWN);
|
|
|
|
if (avail > 0) {
|
|
retval += vis_line_t(avail - 1);
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
vis_line_t
|
|
listview_curses::rows_available(vis_line_t line,
|
|
listview_curses::row_direction_t dir) const
|
|
{
|
|
unsigned long width;
|
|
vis_line_t height;
|
|
vis_line_t retval(0);
|
|
|
|
this->get_dimensions(height, width);
|
|
if (this->lv_word_wrap) {
|
|
size_t row_count = this->lv_source->listview_rows(*this);
|
|
|
|
width -= 1;
|
|
while ((height > 0) && (line >= 0) && ((size_t) line < row_count)) {
|
|
size_t len = this->lv_source->listview_size_for_row(*this, line);
|
|
|
|
do {
|
|
len -= std::min((size_t) width, len);
|
|
--height;
|
|
} while (len > 0);
|
|
line += vis_line_t(dir);
|
|
if (height >= 0) {
|
|
++retval;
|
|
}
|
|
}
|
|
} else {
|
|
switch (dir) {
|
|
case RD_UP:
|
|
retval = std::min(height, line + 1_vl);
|
|
break;
|
|
case RD_DOWN:
|
|
retval = std::min(
|
|
height,
|
|
vis_line_t(this->lv_source->listview_rows(*this) - line));
|
|
break;
|
|
}
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
void
|
|
listview_curses::set_selection(vis_line_t sel)
|
|
{
|
|
if (this->lv_selectable) {
|
|
if (this->lv_selection == sel) {
|
|
return;
|
|
}
|
|
if (sel == -1_vl) {
|
|
this->lv_selection = sel;
|
|
this->lv_source->listview_selection_changed(*this);
|
|
this->set_needs_update();
|
|
this->invoke_scroll();
|
|
return;
|
|
}
|
|
|
|
auto inner_height = this->get_inner_height();
|
|
if (sel >= 0_vl && sel < inner_height) {
|
|
auto found = false;
|
|
vis_line_t step;
|
|
|
|
if (sel == 0_vl) {
|
|
step = 1_vl;
|
|
} else if (sel == inner_height - 1_vl) {
|
|
step = -1_vl;
|
|
} else if (sel < this->lv_selection) {
|
|
step = -1_vl;
|
|
} else {
|
|
step = 1_vl;
|
|
}
|
|
while (sel < inner_height) {
|
|
if (this->lv_source->listview_is_row_selectable(*this, sel)) {
|
|
found = true;
|
|
break;
|
|
}
|
|
sel += step;
|
|
}
|
|
if (found) {
|
|
this->lv_selection = sel;
|
|
this->lv_source->listview_selection_changed(*this);
|
|
this->set_needs_update();
|
|
this->invoke_scroll();
|
|
}
|
|
}
|
|
} else {
|
|
this->set_top(sel);
|
|
}
|
|
}
|