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terminal/qmltermwidget/lib/TerminalView.cpp

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/*
Copyright 2007-2008 by Robert Knight <robertknight@gmail.com>
Copyright 1997,1998 by Lars Doelle <lars.doelle@on-line.de>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.
*/
// Own
#include "TerminalView.h"
// System
#include <algorithm>
#include <cmath>
#include <cstring>
#include <unicode/uchar.h>
#include <xkbcommon/xkbcommon.h>
#include "base/strings.h"
#include "ui/clipboard.h"
#include "ui/drag.h"
#include "ui/painter.h"
#include "ui/window.h"
// Konsole
#include "ColorScheme.h"
#include "Filter.h"
#include "HistorySearch.h"
#include "LineChars.h"
#include "Screen.h"
#include "ScreenWindow.h"
#include "TerminalCharacterDecoder.h"
#include "TerminalFont.h"
#include "ui/bitmap.h"
#include "ui/bitmap_painter.h"
#include "ui/glyph_run.h"
#include "TerminalSession.h"
#include "Vt102Emulation.h"
#include "konsole_wcwidth.h"
#include "tools.h"
using namespace Konsole;
namespace ui = cutefish::ui;
namespace strings = cutefish::base::strings;
using cutefish::base::Point;
#ifndef loc
#define loc(X,Y) ((Y)*_columns+(X))
#endif
static const int TEXT_BLINK_DELAY = 500;
// std::max(QApplication::cursorFlashTime(), 1000) / 2.
static const int CURSOR_BLINK_INTERVAL = 500;
// QApplication::doubleClickInterval().
static const int DOUBLE_CLICK_INTERVAL = 400;
// QApplication::startDragDistance().
static const int START_DRAG_DISTANCE = 10;
// QApplication::wheelScrollLines().
static const int WHEEL_SCROLL_LINES = 3;
TerminalView::TerminalView()
: _font(std::make_unique<TerminalFont>())
{
setName("terminal");
setClipsChildren(true);
setTracksHover(true);
updatePointerCursor();
_blinkTimer.onTimeout = [this] { blinkEvent(); };
_blinkCursorTimer.onTimeout = [this] { blinkCursorTimeout(); };
_tripleClickTimer.setSingleShot(true);
_tripleClickTimer.onTimeout = [this] { _possibleTripleClick = false; };
_bellTimer.setSingleShot(true);
_bellTimer.onTimeout = [this] { _allowBell = true; };
_swapTimer.setSingleShot(true);
_swapTimer.onTimeout = [this] { swapColorTable(); };
setColorTable(base_color_table);
}
TerminalView::~TerminalView()
{
_windowConnections.clear();
_sessionConnections.clear();
if (_session)
_session->removeView(this);
}
/* ------------------------------------------------------------------------- */
/* */
/* Session */
/* */
/* ------------------------------------------------------------------------- */
void TerminalView::setSession(TerminalSession* session)
{
if (_session == session)
return;
_sessionConnections.clear();
_session = session;
if (!session)
return;
// Session::addView().
Emulation* emulation = session->emulation();
_sessionConnections.push_back(emulation->programUsesMouseChanged.connect([this](bool usesMouse) {
setUsesMouse(usesMouse);
}));
setUsesMouse(emulation->programUsesMouse());
_sessionConnections.push_back(emulation->programBracketedPasteModeChanged.connect([this](bool on) {
_bracketedPasteMode = on;
}));
_bracketedPasteMode = emulation->programBracketedPasteMode();
setScreenWindow(session->createWindow());
_sessionConnections.push_back(session->bellRequest.connect([this] { bell(); }));
session->setViewSize(this, _lines, _columns);
requestPaint();
}
void TerminalView::setScreenWindow(ScreenWindow* window)
{
_windowConnections.clear();
_screenWindow = window;
if (window) {
_windowConnections.push_back(window->outputChanged.connect([this] { updateLineProperties(); }));
_windowConnections.push_back(window->outputChanged.connect([this] { updateImage(); }));
_windowConnections.push_back(window->scrollToEnd.connect([this] { scrollToEnd(); }));
_windowConnections.push_back(window->cursorRevealRequested.connect([this] { revealCursor(); }));
// Drives copyAvailable, and with it hasSelection.
_windowConnections.push_back(window->selectionChanged.connect([this] { selectionChanged(); }));
window->setWindowLines(_lines);
}
}
void TerminalView::setUsesMouse(bool on)
{
if (_mouseMarks != on) {
_mouseMarks = on;
updatePointerCursor();
usesMouseChanged();
}
}
void TerminalView::selectionChanged()
{
requestPaint();
copyAvailable(_screenWindow && !_screenWindow->selectedText(false).empty());
}
/* ------------------------------------------------------------------------- */
/* */
/* Colors */
/* */
/* ------------------------------------------------------------------------- */
void TerminalView::setColorTable(const ColorEntry table[])
{
for (int i = 0; i < TABLE_COLORS; i++)
_colorTable[i] = table[i];
requestPaint();
}
void TerminalView::setColorScheme(const std::string& name)
{
if (name == _colorScheme)
return;
// Looked up by name: listing the available schemes first would parse every file.
const ColorScheme* cs = ColorSchemeManager::instance()->findColorScheme(name);
if (!cs)
cs = ColorSchemeManager::instance()->defaultColorScheme();
ColorEntry table[TABLE_COLORS];
cs->getColorTable(table);
setColorTable(table);
_colorScheme = name;
}
ColorSchemeInfo TerminalView::colorSchemeInfo(const std::string& name)
{
ColorSchemeInfo info;
const ColorScheme* cs = ColorSchemeManager::instance()->findColorScheme(name);
if (!cs)
return info;
ColorEntry table[TABLE_COLORS];
cs->getColorTable(table);
info.valid = true;
info.description = cs->description();
info.background = table[DEFAULT_BACK_COLOR].color;
info.foreground = table[DEFAULT_FORE_COLOR].color;
for (int i = 0; i < 8; ++i)
info.colors[size_t(i)] = table[i + 2].color;
for (int i = 0; i < 8; ++i)
info.colors[size_t(i + 8)] = table[i + 2 + BASE_COLORS].color;
return info;
}
void TerminalView::setBackgroundOpacity(double opacity)
{
opacity = std::clamp(opacity, 0.0, 1.0);
if (std::abs(_opacity - opacity) < 1e-12)
return;
_opacity = opacity;
requestPaint();
}
void TerminalView::swapColorTable()
{
ColorEntry color = _colorTable[1];
_colorTable[1] = _colorTable[0];
_colorTable[0] = color;
_colorsInverted = !_colorsInverted;
requestPaint();
}
/* ------------------------------------------------------------------------- */
/* */
/* Font */
/* */
/* ------------------------------------------------------------------------- */
void TerminalView::setTerminalFont(const std::string& family, double pointSize)
{
if (family == _fontFamily && pointSize == _fontPointSize && _metricsScale != 0)
return;
_fontFamily = family;
_fontPointSize = pointSize;
_metricsScale = 0;
updateFontMetrics();
}
// TerminalDisplay::fontChange(): the cell from the font at the window's scale.
void TerminalView::updateFontMetrics()
{
const double scale = window() ? window()->scale() : 1;
if (_metricsScale == scale)
return;
_metricsScale = scale;
_font->setFont(_fontFamily, _fontPointSize);
_metrics = _font->metrics();
_metrics.height += _lineSpacing;
if (_metrics.width < 1)
_metrics.width = 1;
fontMetricsChanged();
propagateSize();
requestPaint();
}
void TerminalView::setBlinkingCursor(bool blink)
{
_hasBlinkingCursor = blink;
if (blink && !_blinkCursorTimer.isActive() && hasKeyboard())
_blinkCursorTimer.start(std::chrono::milliseconds(CURSOR_BLINK_INTERVAL));
if (!blink && _blinkCursorTimer.isActive()) {
_blinkCursorTimer.stop();
if (_cursorBlinking)
blinkCursorEvent();
else
_cursorBlinking = false;
}
}
void TerminalView::setTerminalCursorShape(int shape)
{
_cursorShape = std::clamp(shape, 0, 2);
requestPaint();
}
void TerminalView::setFullCursorHeight(bool full)
{
_fullCursorHeight = full;
requestPaint();
}
void TerminalView::blinkEvent()
{
_blinking = !_blinking;
requestPaint();
}
void TerminalView::blinkCursorEvent()
{
_cursorBlinking = !_cursorBlinking;
requestPaint();
}
void TerminalView::blinkCursorTimeout()
{
// Without the keyboard the cursor shows in its unfocused state; the next
// paint with it starts blinking again.
if (!hasKeyboard()) {
_blinkCursorTimer.stop();
if (_cursorBlinking)
blinkCursorEvent();
return;
}
blinkCursorEvent();
}
bool TerminalView::hasKeyboard() const
{
const ui::Window* window = this->window();
return hasFocus() && window->hasKeyboardFocus();
}
void TerminalView::focusIn(ui::FocusReason)
{
if (_hasBlinkingCursor && hasKeyboard())
_blinkCursorTimer.start(std::chrono::milliseconds(CURSOR_BLINK_INTERVAL));
requestPaint();
if (_hasBlinker)
_blinkTimer.start(std::chrono::milliseconds(TEXT_BLINK_DELAY));
}
void TerminalView::focusOut()
{
// The cursor shows while out of focus, drawn in its unfocused state.
_cursorBlinking = false;
requestPaint();
_blinkCursorTimer.stop();
if (_blinking)
blinkEvent();
_blinkTimer.stop();
}
/* ------------------------------------------------------------------------- */
/* */
/* Resizing */
/* */
/* ------------------------------------------------------------------------- */
void TerminalView::layout()
{
if (!_scroller && window())
_scroller = std::make_unique<ui::Scroller>(window(), this);
updateFontMetrics();
updateImageSize();
requestPaint();
}
void TerminalView::propagateSize()
{
if (!_image.empty())
updateImageSize();
}
void TerminalView::calcGeometry()
{
const int width = int(geometry().width);
const int height = int(geometry().height);
_leftMargin = _leftBaseMargin;
_contentWidth = width - 2 * _leftBaseMargin;
_topMargin = _topBaseMargin + kRound(_scrollOffset);
_contentHeight = height - 2 * _topBaseMargin + /* mysterious */ 1;
// ensure that display is always at least one column wide
_columns = std::max(1, _contentWidth / _metrics.width);
_usedColumns = std::min(_usedColumns, _columns);
// ensure that display is always at least one line high
_lines = std::max(1, _contentHeight / _metrics.height);
_usedLines = std::min(_usedLines, _lines);
}
void TerminalView::clearImage()
{
// We initialize _image[_imageSize] too. See makeImage()
for (int i = 0; i <= _imageSize; i++) {
_image[size_t(i)].character = ' ';
_image[size_t(i)].foregroundColor = CharacterColor(COLOR_SPACE_DEFAULT, DEFAULT_FORE_COLOR);
_image[size_t(i)].backgroundColor = CharacterColor(COLOR_SPACE_DEFAULT, DEFAULT_BACK_COLOR);
_image[size_t(i)].rendition = DEFAULT_RENDITION;
}
}
void TerminalView::makeImage()
{
calcGeometry();
// One line more for the line below the window, see _hasLineBelow.
_imageSize = (_lines + 1) * _columns;
// We over-commit one character so that we can be more relaxed in dealing with
// certain boundary conditions: _image[_imageSize] is a valid but unused position
_image.assign(size_t(_imageSize + 1), Character());
clearImage();
}
void TerminalView::updateImageSize()
{
if (_scroller) {
_scroller->cancel(false);
_scrollOffset = 0;
}
std::vector<Character> oldimg = std::move(_image);
const int oldlin = _lines;
const int oldcol = _columns;
makeImage();
// copy the old image to reduce flicker
const int lines = std::min(oldlin, _lines);
const int columns = std::min(oldcol, _columns);
if (!oldimg.empty()) {
for (int line = 0; line < lines; line++) {
std::memcpy(static_cast<void*>(&_image[size_t(_columns * line)]), &oldimg[size_t(oldcol * line)],
size_t(columns) * sizeof(Character));
}
}
if (_screenWindow)
_screenWindow->setWindowLines(_lines);
if (oldlin != _lines || oldcol != _columns) {
if (_session)
_session->setViewSize(this, _lines, _columns);
sizeChanged();
}
}
/* ------------------------------------------------------------------------- */
/* */
/* Display Operations */
/* */
/* ------------------------------------------------------------------------- */
void TerminalView::updateLineProperties()
{
if (!_screenWindow)
return;
_lineProperties = _screenWindow->getLineProperties();
}
void TerminalView::updateImage()
{
if (!_screenWindow)
return;
if (_image.empty()) {
// Create _image.
// The emitted size change also leads to getImage being recreated, so do this first.
updateImageSize();
}
// Scroll just far enough for output that pushed the cursor out of view.
if (_followCursor && !_screenWindow->trackOutput()) {
const int below = cursorLineInWindow() - _screenWindow->windowLines() + 1;
if (below > 0)
_screenWindow->scrollTo(_screenWindow->currentLine() + below);
if (_screenWindow->atEndOfOutput()) {
_screenWindow->setTrackOutput(true);
_followCursor = false;
}
}
Character* const newimg = _screenWindow->getImage();
const int lines = _screenWindow->windowLines();
const int columns = _screenWindow->windowColumns();
setScroll(_screenWindow->currentLine(), _screenWindow->lineCount());
_hasBlinker = false;
const int linesToUpdate = std::min(_lines, std::max(0, lines));
const int columnsToUpdate = std::min(_columns, std::max(0, columns));
for (int y = 0; y < linesToUpdate; ++y) {
Character* currentLine = &_image[size_t(y * _columns)];
const Character* const newLine = &newimg[y * columns];
for (int x = 0; x < columnsToUpdate; ++x) {
if ((newLine[x].rendition & RE_BLINK) != 0)
_hasBlinker = true;
}
// replace the line of characters in the old _image with the
// current line of the new _image
std::memcpy(static_cast<void*>(currentLine), newLine, size_t(columnsToUpdate) * sizeof(Character));
}
_usedLines = linesToUpdate;
_usedColumns = columnsToUpdate;
const int lineBelow = _screenWindow->currentLine() + lines;
_hasLineBelow = lineBelow < _screenWindow->lineCount();
if (_hasLineBelow) {
std::vector<Character> below(static_cast<size_t>(columns));
_screenWindow->screen()->getImage(below.data(), columns, lineBelow, lineBelow);
std::memcpy(static_cast<void*>(&_image[size_t(linesToUpdate * _columns)]), below.data(),
size_t(columnsToUpdate) * sizeof(Character));
}
requestPaint();
if (_hasBlinker && !_blinkTimer.isActive())
_blinkTimer.start(std::chrono::milliseconds(TEXT_BLINK_DELAY));
if (!_hasBlinker && _blinkTimer.isActive()) {
_blinkTimer.stop();
_blinking = false;
}
}
/* ------------------------------------------------------------------------- */
/* */
/* Scrollbar */
/* */
/* ------------------------------------------------------------------------- */
void TerminalView::setScrollBarValueQuietly(int value)
{
_scrollValue = std::clamp(value, 0, _scrollMaximum);
}
// ScrollBar::setValue(): changes are what scrollBarPositionChanged() follows.
void TerminalView::setScrollbarValue(int value)
{
const int newValue = std::clamp(value, 0, _scrollMaximum);
if (newValue == _scrollValue)
return;
_scrollValue = newValue;
scrollbarParamsChanged();
refreshLinkHover();
scrollBarPositionChanged();
}
void TerminalView::scrollBarPositionChanged()
{
if (!_screenWindow)
return;
if (!_applyingScroll) {
if (_scroller)
_scroller->cancel(false);
setScrollOffset(0);
}
_followCursor = false;
_screenWindow->scrollTo(_scrollValue);
// if the thumb has been moved to the bottom of the _scrollBar then set
// the display to automatically track new output,
// that is, scroll down automatically
// to how new _lines as they are added
const bool atEndOfOutput = (_scrollValue == _scrollMaximum);
_screenWindow->setTrackOutput(atEndOfOutput);
updateImage();
scrollbarValueChanged();
}
void TerminalView::setScroll(int cursor, int slines)
{
// Before the first layout the display is a one-line fallback, so the whole screen would read as scrollback.
const int maxScrollValue = geometry().height > 0 ? std::max(0, slines - _lines) : 0;
const int boundedCursor = std::clamp(cursor, 0, maxScrollValue);
if (_scrollMaximum == maxScrollValue && _scrollValue == boundedCursor)
return;
const int previousValue = _scrollValue;
const bool rangeChanged = _scrollMaximum != maxScrollValue;
_scrollMaximum = maxScrollValue;
setScrollBarValueQuietly(_scrollValue);
const bool clamped = _scrollValue != previousValue;
setScrollBarValueQuietly(boundedCursor);
if (rangeChanged || clamped || _scrollValue != previousValue) {
scrollbarParamsChanged();
refreshLinkHover();
}
// The view moved under a resting partial scroll, or the scrollback went away.
if (maxScrollValue == 0 || (_scrollValue != previousValue && !(_scroller && _scroller->isActive()))) {
if (_scroller)
_scroller->cancel(false);
setScrollOffset(0);
}
}
int TerminalView::cursorLineInWindow() const
{
Screen* screen = _screenWindow->screen();
return screen->getHistLines() + screen->getCursorY() - _screenWindow->currentLine();
}
// A short scrollback over a mostly empty screen: jumping to the end would
// push the prompt up and show the empty lines instead.
void TerminalView::revealCursor()
{
if (!_screenWindow)
return;
const int line = cursorLineInWindow();
if (line < 0 || line >= _screenWindow->windowLines()) {
scrollToEnd();
return;
}
_followCursor = !_screenWindow->atEndOfOutput();
}
void TerminalView::scrollToEnd()
{
_followCursor = false;
if (_scroller)
_scroller->cancel(false);
setScrollOffset(0);
if (_scrollValue != _scrollMaximum) {
setScrollBarValueQuietly(_scrollMaximum);
scrollbarParamsChanged();
}
_screenWindow->scrollTo(_scrollValue + 1);
_screenWindow->setTrackOutput(_screenWindow->atEndOfOutput());
}
double TerminalView::scrollPixelPosition() const
{
return _scrollValue * double(_metrics.height) - _scrollOffset;
}
double TerminalView::scrollPixelMaximum() const
{
return _scrollMaximum * double(_metrics.height);
}
// Past either end the whole text moves with the stretch.
void TerminalView::setScrollPixelPosition(double position)
{
const int maximum = _scrollMaximum;
const double bounded = std::clamp(position, 0.0, maximum * double(_metrics.height));
const int line = std::min(maximum, int(bounded / _metrics.height));
_applyingScroll = true;
setScrollbarValue(line);
_applyingScroll = false;
setScrollOffset(line * double(_metrics.height) - position);
}
void TerminalView::setScrollOffset(double offset)
{
_scrollOffset = offset;
const int topMargin = _topBaseMargin + kRound(offset);
if (topMargin == _topMargin)
return;
_topMargin = topMargin;
requestPaint();
}
int TerminalView::drawnLines() const
{
return _usedLines + (_topMargin < _topBaseMargin && _hasLineBelow ? 1 : 0);
}
// The scroller's axis: the scrollback in pixels.
ui::Scroller::Axis TerminalView::horizontalAxis() const
{
return {};
}
ui::Scroller::Axis TerminalView::verticalAxis() const
{
return {0, scrollPixelMaximum(), geometry().height, _scrollMaximum > 0};
}
ui::PointF TerminalView::position() const
{
return {0, scrollPixelPosition()};
}
void TerminalView::applyPosition(ui::PointF position)
{
setScrollPixelPosition(position.y);
}
/* ------------------------------------------------------------------------- */
/* */
/* Mouse */
/* */
/* ------------------------------------------------------------------------- */
void TerminalView::sendMouse(int button, int column, int line, int eventType)
{
if (_session)
_session->emulation()->sendMouseEvent(button, column, line, eventType);
}
void TerminalView::getCharacterPosition(ui::PointF point, int& line, int& column) const
{
line = int((point.y - _topMargin) / _metrics.height);
if (line < 0)
line = 0;
if (line >= _usedLines)
line = _usedLines - 1;
const int x = int(point.x + _metrics.width / 2 - _leftMargin);
column = x / _metrics.width;
if (column < 0)
column = 0;
// the column value returned can be equal to _usedColumns, which
// is the position just after the last character displayed in a line.
//
// this is required so that the user can select characters in the right-most
// column (or left-most for right-to-left input)
if (column > _usedColumns)
column = _usedColumns;
}
void TerminalView::getCharacterCellAt(ui::PointF point, int& line, int& column) const
{
getCharacterPosition({point.x - _metrics.width / 2.0, point.y}, line, column);
column = std::clamp(column, 0, std::max(0, _usedColumns - 1));
}
// QMouseEvent::pos(): the position rounded to whole pixels.
static ui::PointF eventPosition(double x, double y)
{
return {double(kRound(x)), double(kRound(y))};
}
void TerminalView::simulateMousePress(double x, double y, ui::MouseButton button, uint32_t modifiers)
{
const ui::PointF pos = eventPosition(x, y);
if (_possibleTripleClick && button == ui::MouseButton::Left) {
mouseTripleClick(pos);
return;
}
// contentsRect().contains(ev->pos()).
if (pos.x < 0 || pos.y < 0 || pos.x > int(geometry().width) - 1 || pos.y > int(geometry().height) - 1)
return;
if (!_screenWindow)
return;
int charLine;
int charColumn;
getCharacterPosition(pos, charLine, charColumn);
Point point(charColumn, charLine);
if (button == ui::MouseButton::Left) {
_lineSelectionMode = false;
_wordSelectionMode = false;
const bool selected = _screenWindow->isSelected(point.x(), point.y());
if (selected) {
// The user clicked inside selected text
_dragState = DragPending;
_dragStart = pos;
} else {
// No reason to ever start a drag event
_dragState = DragNone;
_preserveLineBreaks = !((modifiers & ui::ControlModifier) && !(modifiers & ui::AltModifier));
_columnSelectionMode = (modifiers & ui::AltModifier) && (modifiers & ui::ControlModifier);
if (_mouseMarks || (modifiers & ui::ShiftModifier)) {
_screenWindow->clearSelection();
point.setY(point.y() + _scrollValue);
_iPntSel = _pntSel = point;
_actSel = 1; // left mouse button pressed but nothing selected yet.
} else {
sendMouse(0, charColumn + 1, charLine + 1 + _scrollValue - _scrollMaximum, 0);
}
}
} else if (button == ui::MouseButton::Middle) {
if (_mouseMarks || (modifiers & ui::ShiftModifier))
emitSelection(true, modifiers & ui::ControlModifier);
else
sendMouse(1, charColumn + 1, charLine + 1 + _scrollValue - _scrollMaximum, 0);
} else if (button == ui::MouseButton::Right) {
if (!_mouseMarks && !(modifiers & ui::ShiftModifier))
sendMouse(2, charColumn + 1, charLine + 1 + _scrollValue - _scrollMaximum, 0);
}
}
void TerminalView::simulateMouseMove(double x, double y, uint32_t buttons, uint32_t modifiers)
{
const ui::PointF pos = eventPosition(x, y);
int charLine = 0;
int charColumn = 0;
getCharacterPosition(pos, charLine, charColumn);
if (buttons == 0)
return;
// if the terminal is interested in mouse movements
// then emit a mouse movement signal, unless the shift
// key is being held down, which overrides this.
if (!_mouseMarks && !(modifiers & ui::ShiftModifier)) {
int button = 3;
if (buttons & (1u << int(ui::MouseButton::Left)))
button = 0;
if (buttons & (1u << int(ui::MouseButton::Middle)))
button = 1;
if (buttons & (1u << int(ui::MouseButton::Right)))
button = 2;
sendMouse(button, charColumn + 1, charLine + 1 + _scrollValue - _scrollMaximum, 1);
return;
}
if (_dragState == DragPending) {
// we had a mouse down, but haven't confirmed a drag yet
// if the mouse has moved sufficiently, we will confirm
const int distance = START_DRAG_DISTANCE;
if (pos.x > _dragStart.x + distance || pos.x < _dragStart.x - distance
|| pos.y > _dragStart.y + distance || pos.y < _dragStart.y - distance) {
// we've left the drag square, we can start a real drag operation now
doDrag();
}
return;
} else if (_dragState == DragDragging) {
return;
}
if (_actSel == 0)
return;
// don't extend selection while pasting
if (buttons & (1u << int(ui::MouseButton::Middle)))
return;
extendSelection(pos);
}
void TerminalView::doDrag()
{
_dragState = DragDragging;
const std::string text = _screenWindow ? _screenWindow->selectedText(_preserveLineBreaks) : std::string();
ui::DragSource source;
source.mimeTypes = {"text/plain;charset=utf-8", "text/plain"};
source.data = [text](const std::string&) { return text; };
source.actions = ui::CopyAction;
source.onFinished = [this](ui::DropAction) { _dragState = DragNone; };
startDrag(std::move(source));
}
void TerminalView::extendSelection(ui::PointF position)
{
if (!_screenWindow)
return;
const int scroll = _scrollValue;
// we're in the process of moving the mouse with the left button pressed
// the mouse cursor will kept caught within the bounds of the text in
// this widget.
int linesBeyondWidget = 0;
// QRect(left, top, width, height) with right = left + width - 1.
const int textLeft = _leftMargin;
const int textTop = _topMargin;
const int textRight = textLeft + _usedColumns * _metrics.width - 1 - 1;
const int textBottom = textTop + _usedLines * _metrics.height - 1 - 1;
// Adjust position within text area bounds.
const int oldX = int(position.x);
const int oldY = int(position.y);
ui::PointF pos{double(std::clamp(oldX, textLeft, std::max(textLeft, textRight))),
double(std::clamp(oldY, textTop, std::max(textTop, textBottom)))};
if (oldY > textBottom) {
linesBeyondWidget = (oldY - textBottom) / _metrics.height;
setScrollbarValue(_scrollValue + linesBeyondWidget + 1); // scrollforward
}
if (oldY < textTop) {
linesBeyondWidget = (textTop - oldY) / _metrics.height;
setScrollbarValue(_scrollValue - linesBeyondWidget - 1); // history
}
int charColumn = 0;
int charLine = 0;
getCharacterPosition(pos, charLine, charColumn);
Point here(charColumn, charLine);
Point ohere;
Point iPntSelCorr = _iPntSel;
iPntSelCorr.setY(iPntSelCorr.y() - _scrollValue);
Point pntSelCorr = _pntSel;
pntSelCorr.setY(pntSelCorr.y() - _scrollValue);
bool swapping = false;
if (_wordSelectionMode) {
// Extend to word boundaries
int i;
char32_t selClass;
const bool left_not_right = (here.y() < iPntSelCorr.y()
|| (here.y() == iPntSelCorr.y() && here.x() < iPntSelCorr.x()));
const bool old_left_not_right = (pntSelCorr.y() < iPntSelCorr.y()
|| (pntSelCorr.y() == iPntSelCorr.y() && pntSelCorr.x() < iPntSelCorr.x()));
swapping = left_not_right != old_left_not_right;
// Find left (left_not_right ? from here : from start)
Point left = left_not_right ? here : iPntSelCorr;
i = loc(left.x(), left.y());
if (i >= 0 && i <= _imageSize) {
selClass = charClass(_image[size_t(i)]);
while (((left.x() > 0) || (left.y() > 0 && (_lineProperties[size_t(left.y() - 1)] & LINE_WRAPPED)))
&& charClass(_image[size_t(i - 1)]) == selClass) {
i--;
if (left.x() > 0) {
left.setX(left.x() - 1);
} else {
left.setX(_usedColumns - 1);
left.setY(left.y() - 1);
}
}
}
// Find left (left_not_right ? from start : from here)
Point right = left_not_right ? iPntSelCorr : here;
i = loc(right.x(), right.y());
if (i >= 0 && i <= _imageSize) {
selClass = charClass(_image[size_t(i)]);
while (((right.x() < _usedColumns - 1)
|| (right.y() < _usedLines - 1 && (_lineProperties[size_t(right.y())] & LINE_WRAPPED)))
&& charClass(_image[size_t(i + 1)]) == selClass) {
i++;
if (right.x() < _usedColumns - 1) {
right.setX(right.x() + 1);
} else {
right.setX(0);
right.setY(right.y() + 1);
}
}
}
// Pick which is start (ohere) and which is extension (here)
if (left_not_right) {
here = left;
ohere = right;
} else {
here = right;
ohere = left;
}
ohere.setX(ohere.x() + 1);
}
if (_lineSelectionMode) {
// Extend to complete line
const bool above_not_below = (here.y() < iPntSelCorr.y());
Point above = above_not_below ? here : iPntSelCorr;
Point below = above_not_below ? iPntSelCorr : here;
while (above.y() > 0 && (_lineProperties[size_t(above.y() - 1)] & LINE_WRAPPED))
above.setY(above.y() - 1);
while (below.y() < _usedLines - 1 && (_lineProperties[size_t(below.y())] & LINE_WRAPPED))
below.setY(below.y() + 1);
above.setX(0);
below.setX(_usedColumns - 1);
// Pick which is start (ohere) and which is extension (here)
if (above_not_below) {
here = above;
ohere = below;
} else {
here = below;
ohere = above;
}
const Point newSelBegin(ohere.x(), ohere.y());
swapping = !(_tripleSelBegin == newSelBegin);
_tripleSelBegin = newSelBegin;
ohere.setX(ohere.x() + 1);
}
int offset = 0;
if (!_wordSelectionMode && !_lineSelectionMode) {
const bool left_not_right = (here.y() < iPntSelCorr.y()
|| (here.y() == iPntSelCorr.y() && here.x() < iPntSelCorr.x()));
const bool old_left_not_right = (pntSelCorr.y() < iPntSelCorr.y()
|| (pntSelCorr.y() == iPntSelCorr.y() && pntSelCorr.x() < iPntSelCorr.x()));
swapping = left_not_right != old_left_not_right;
// Find left (left_not_right ? from here : from start)
const Point left = left_not_right ? here : iPntSelCorr;
// Find left (left_not_right ? from start : from here)
const Point right = left_not_right ? iPntSelCorr : here;
// Pick which is start (ohere) and which is extension (here)
if (left_not_right) {
here = left;
ohere = right;
offset = 0;
} else {
here = right;
ohere = left;
offset = -1;
}
}
if ((here == pntSelCorr) && (scroll == _scrollValue))
return; // not moved
if (here == ohere)
return; // It's not left, it's not right.
if (_actSel < 2 || swapping) {
if (_columnSelectionMode && !_lineSelectionMode && !_wordSelectionMode)
_screenWindow->setSelectionStart(ohere.x(), ohere.y(), true);
else
_screenWindow->setSelectionStart(ohere.x() - 1 - offset, ohere.y(), false);
}
_actSel = 2; // within selection
_pntSel = here;
_pntSel.setY(_pntSel.y() + _scrollValue);
if (_columnSelectionMode && !_lineSelectionMode && !_wordSelectionMode)
_screenWindow->setSelectionEnd(here.x(), here.y());
else
_screenWindow->setSelectionEnd(here.x() + offset, here.y());
}
void TerminalView::simulateMouseRelease(double x, double y, ui::MouseButton button, uint32_t modifiers)
{
if (!_screenWindow)
return;
int charLine;
int charColumn;
getCharacterPosition(eventPosition(x, y), charLine, charColumn);
if (button == ui::MouseButton::Left) {
if (_dragState == DragPending) {
// We had a drag event pending but never confirmed. Kill selection
_screenWindow->clearSelection();
} else {
if (_actSel > 1)
setSelection(_screenWindow->selectedText(_preserveLineBreaks));
_actSel = 0;
//FIXME: emits a release event even if the mouse is
// outside the range. The procedure used in `mouseMoveEvent'
// applies here, too.
if (!_mouseMarks && !(modifiers & ui::ShiftModifier))
sendMouse(0, charColumn + 1, charLine + 1 + _scrollValue - _scrollMaximum, 2);
}
_dragState = DragNone;
}
if (!_mouseMarks
&& ((button == ui::MouseButton::Right && !(modifiers & ui::ShiftModifier))
|| button == ui::MouseButton::Middle)) {
sendMouse(button == ui::MouseButton::Middle ? 1 : 2, charColumn + 1,
charLine + 1 + _scrollValue - _scrollMaximum, 2);
}
}
void TerminalView::simulateMouseDoubleClick(double x, double y, ui::MouseButton button, uint32_t modifiers)
{
if (button != ui::MouseButton::Left)
return;
if (!_screenWindow)
return;
int charLine = 0;
int charColumn = 0;
getCharacterPosition(eventPosition(x, y), charLine, charColumn);
// pass on double click as two clicks.
if (!_mouseMarks && !(modifiers & ui::ShiftModifier)) {
// Send just _ONE_ click event, since the first click of the double click
// was already sent by the click handler
sendMouse(0, charColumn + 1, charLine + 1 + _scrollValue - _scrollMaximum, 0); // left button
return;
}
_screenWindow->clearSelection();
_iPntSel = Point(charColumn, charLine + _scrollValue);
_wordSelectionMode = true;
int beginColumn, beginLine, endColumn, endLine;
findWordBounds(charColumn, charLine, beginColumn, beginLine, endColumn, endLine);
_screenWindow->setSelectionStart(beginColumn, beginLine, false);
_actSel = 2; // within selection
_screenWindow->setSelectionEnd(endColumn, endLine);
setSelection(_screenWindow->selectedText(_preserveLineBreaks));
_possibleTripleClick = true;
_tripleClickTimer.start(std::chrono::milliseconds(DOUBLE_CLICK_INTERVAL));
}
void TerminalView::findWordBounds(int column, int line, int& beginColumn, int& beginLine, int& endColumn,
int& endLine) const
{
beginColumn = endColumn = column;
beginLine = endLine = line;
int i = loc(column, line);
const char32_t selClass = charClass(_image[size_t(i)]);
// find the start of the word
int x = column;
while (((x > 0) || (beginLine > 0 && (_lineProperties[size_t(beginLine - 1)] & LINE_WRAPPED)))
&& charClass(_image[size_t(i - 1)]) == selClass) {
i--;
if (x > 0) {
x--;
} else {
x = _usedColumns - 1;
beginLine--;
}
}
beginColumn = x;
// find the end of the word
i = loc(column, line);
x = column;
while (((x < _usedColumns - 1) || (endLine < _usedLines - 1 && (_lineProperties[size_t(endLine)] & LINE_WRAPPED)))
&& charClass(_image[size_t(i + 1)]) == selClass) {
i++;
if (x < _usedColumns - 1) {
x++;
} else {
x = 0;
endLine++;
}
}
endColumn = x;
// In word selection mode don't select @ (64) if at end of word.
if (char16_t(_image[size_t(i)].character) == u'@' && endColumn - beginColumn > 0
&& (_image[size_t(i)].rendition & RE_EXTENDED_CHAR) == 0) {
endColumn = x - 1;
}
}
bool TerminalView::isSelectedAt(double x, double y)
{
if (!_screenWindow)
return false;
int charLine = 0;
int charColumn = 0;
getCharacterCellAt({x, y}, charLine, charColumn);
return _screenWindow->isSelected(charColumn, charLine);
}
bool TerminalView::selectWordAt(double x, double y)
{
if (!_screenWindow || _image.empty())
return false;
int charLine = 0;
int charColumn = 0;
getCharacterCellAt({x, y}, charLine, charColumn);
if (konsole_isspace(char16_t(_image[size_t(loc(charColumn, charLine))].character)))
return false;
int beginColumn, beginLine, endColumn, endLine;
findWordBounds(charColumn, charLine, beginColumn, beginLine, endColumn, endLine);
_screenWindow->clearSelection();
_screenWindow->setSelectionStart(beginColumn, beginLine, false);
_screenWindow->setSelectionEnd(endColumn, endLine);
setSelection(_screenWindow->selectedText(_preserveLineBreaks));
return true;
}
void TerminalView::mouseTripleClick(ui::PointF position)
{
if (!_screenWindow)
return;
int charLine;
int charColumn;
getCharacterPosition(position, charLine, charColumn);
_iPntSel = Point(charColumn, charLine);
_screenWindow->clearSelection();
_lineSelectionMode = true;
_wordSelectionMode = false;
_actSel = 2; // within selection
while (_iPntSel.y() > 0 && (_lineProperties[size_t(_iPntSel.y() - 1)] & LINE_WRAPPED))
_iPntSel.setY(_iPntSel.y() - 1);
// SelectWholeLine.
_screenWindow->setSelectionStart(0, _iPntSel.y(), false);
_tripleSelBegin = Point(0, _iPntSel.y());
while (_iPntSel.y() < _lines - 1 && (_lineProperties[size_t(_iPntSel.y())] & LINE_WRAPPED))
_iPntSel.setY(_iPntSel.y() + 1);
_screenWindow->setSelectionEnd(_columns - 1, _iPntSel.y());
setSelection(_screenWindow->selectedText(_preserveLineBreaks));
_iPntSel.setY(_iPntSel.y() + _scrollValue);
}
// QChar::isLetterOrNumber() of a UTF-16 unit.
static bool isLetterOrNumber(char16_t ch)
{
switch (u_charType(ch)) {
case U_UPPERCASE_LETTER:
case U_LOWERCASE_LETTER:
case U_TITLECASE_LETTER:
case U_MODIFIER_LETTER:
case U_OTHER_LETTER:
case U_DECIMAL_DIGIT_NUMBER:
case U_LETTER_NUMBER:
case U_OTHER_NUMBER:
return true;
default:
return false;
}
}
// QString::contains(QChar, Qt::CaseInsensitive): QChar::toCaseFolded on both.
static bool containsIgnoringCase(const std::u16string& text, char16_t ch)
{
const UChar32 folded = u_foldCase(ch, U_FOLD_CASE_DEFAULT);
return std::any_of(text.begin(), text.end(), [folded](char16_t c) {
return u_foldCase(c, U_FOLD_CASE_DEFAULT) == folded;
});
}
char32_t TerminalView::charClass(const Character& ch) const
{
if (ch.rendition & RE_EXTENDED_CHAR) {
ushort extendedCharLength = 0;
const uint* chars = ExtendedCharTable::instance.lookupExtendedChar(ch.character, extendedCharLength);
if (chars && extendedCharLength > 0) {
std::wstring str;
for (ushort nchar = 0; nchar < extendedCharLength; nchar++)
str.push_back(wchar_t(chars[nchar]));
std::u16string s;
TerminalCharacterDecoder::appendWide(s, str);
// QString::contains(QString, CaseInsensitive).
std::u16string foldedWords;
std::u16string foldedText;
for (char16_t c : _wordCharacters)
foldedWords.push_back(char16_t(u_foldCase(c, U_FOLD_CASE_DEFAULT)));
for (char16_t c : s)
foldedText.push_back(char16_t(u_foldCase(c, U_FOLD_CASE_DEFAULT)));
if (foldedWords.find(foldedText) != std::u16string::npos)
return U'a';
bool allLetterOrNumber = true;
for (size_t i = 0; allLetterOrNumber && i < s.size(); ++i)
allLetterOrNumber = isLetterOrNumber(s[i]);
return allLetterOrNumber ? U'a' : char32_t(s.empty() ? 0 : s[0]);
}
return 0;
}
const char16_t qch = char16_t(ch.character);
if (konsole_isspace(qch))
return U' ';
if (isLetterOrNumber(qch) || containsIgnoringCase(_wordCharacters, qch))
return U'a';
return qch;
}
/* ------------------------------------------------------------------------- */
/* */
/* Wheel */
/* */
/* ------------------------------------------------------------------------- */
bool TerminalView::scroll(const ui::ScrollEvent& event)
{
// A tab moved to another window brings its view along; the scroller ticks on the window's frames.
if (_scroller && _scroller->window() != window())
_scroller = window() ? std::make_unique<ui::Scroller>(window(), this) : nullptr;
// A touchpad drags the scrollback by the pixel, coasts and stretches at the ends.
if (_mouseMarks && event.precise && _scrollMaximum > 0 && _scroller) {
_scroller->handleScroll(event);
return true;
}
// Qt's angle delta: positive for a wheel turned away, towards the top.
const int angleDelta = event.precise ? -kRound(event.deltaY) : -event.value120Y;
if (angleDelta == 0)
return true;
// if the terminal program is not interested mouse events
// then send the event to the scrollbar if the slider has room to move
// or otherwise send simulated up / down key presses to the terminal program
// for the benefit of programs such as 'less'
if (_mouseMarks) {
int lines;
if (event.precise && _metrics.height > 0) {
// Touchpads report pixels: one line per line of text scrolled.
_wheelPixelRemainder += angleDelta;
lines = _wheelPixelRemainder / _metrics.height;
_wheelPixelRemainder -= lines * _metrics.height;
} else {
// A wheel notch is 120; high-resolution wheels send fractions of one.
_wheelAngleRemainder += angleDelta * WHEEL_SCROLL_LINES;
lines = _wheelAngleRemainder / 120;
_wheelAngleRemainder -= lines * 120;
}
if (lines == 0)
return true;
if (_scrollMaximum > 0) {
setScrollbarValue(_scrollValue - lines);
} else {
// A program without mouse reporting, such as less, scrolls on Up / Down.
KeyEvent keyScrollEvent{lines > 0 ? Key_Up : Key_Down, NoModifier, std::string()};
for (int i = 0; i < std::abs(lines); i++)
keyPressed(keyScrollEvent, false);
}
} else {
// terminal program wants notification of mouse activity
int charLine;
int charColumn;
const ui::Window* window = this->window();
(void)window;
getCharacterPosition(_lastPointer, charLine, charColumn);
sendMouse(angleDelta > 0 ? 4 : 5, charColumn + 1, charLine + 1 + _scrollValue - _scrollMaximum, 0);
}
return true;
}
/* ------------------------------------------------------------------------- */
/* */
/* Keyboard */
/* */
/* ------------------------------------------------------------------------- */
void TerminalView::keyPressed(KeyEvent& event, bool fromPaste)
{
if (_session)
_session->emulation()->sendKeyEvent(&event, fromPaste);
}
void TerminalView::restartCursorBlink()
{
if (_hasBlinkingCursor) {
_blinkCursorTimer.start(std::chrono::milliseconds(CURSOR_BLINK_INTERVAL));
if (_cursorBlinking)
blinkCursorEvent();
else
_cursorBlinking = false;
}
}
void TerminalView::sendKeyEvent(KeyEvent& event)
{
_actSel = 0; // Key stroke implies a screen update, so TerminalDisplay won't
// know where the current selection is.
restartCursorBlink();
keyPressed(event, false);
}
// libxkbcommon's control transformation, which Qt's key text carries.
static char32_t toControl(char32_t c)
{
if ((c >= '@' && c < 0x7f) || c == ' ')
return c & 0x1f;
if (c == '2')
return 0;
if (c >= '3' && c <= '7')
return c - ('3' - 0x1b);
if (c == '8')
return 0x7f;
if (c == '/')
return '_' & 0x1f;
return c;
}
KeyEvent TerminalView::keyEventFor(const ui::KeyEvent& event)
{
KeyEvent key;
if (event.modifiers & ui::ShiftModifier)
key.modifiers |= ShiftModifier;
if (event.modifiers & ui::ControlModifier)
key.modifiers |= ControlModifier;
if (event.modifiers & ui::AltModifier)
key.modifiers |= AltModifier;
if (event.modifiers & ui::SuperModifier)
key.modifiers |= MetaModifier;
// The toolkit's key is the lower-case keysym; the keypad's keep their own.
uint32_t keysym = event.key;
if (isKeypadKeysym(keysym))
key.modifiers |= KeypadModifier;
// Qt's text is xkb's, control characters included, which the toolkit leaves out.
key.text = event.text;
if (key.text.empty()) {
char32_t c = xkb_keysym_to_utf32(keysym);
if (c != 0 && (event.modifiers & ui::ControlModifier) && c < 0x80)
c = toControl(c);
if (c != 0 && (c < 0x20 || c == 0x7f))
strings::appendUtf8(key.text, c);
}
// The text without the control transformation names the key.
std::string plain;
if (char32_t c = xkb_keysym_to_utf32(keysym); c >= 0x20 && c != 0x7f)
strings::appendUtf8(plain, c);
key.key = keyCodeFromKeysym(keysym, key.modifiers, plain);
// Shift+Tab reaches the program as Backtab, as Qt names it.
if (key.key == Key_Tab && (key.modifiers & ShiftModifier))
key.key = Key_Backtab;
return key;
}
bool TerminalView::keyPress(const ui::KeyEvent& event)
{
if (event.key == XKB_KEY_Control_L || event.key == XKB_KEY_Control_R) {
_ctrlHeld = true;
updatePointerCursor();
}
if (onShortcut && onShortcut(event))
return true;
KeyEvent key = keyEventFor(event);
sendKeyEvent(key);
return true;
}
/* ------------------------------------------------------------------------- */
/* */
/* Input method */
/* */
/* ------------------------------------------------------------------------- */
ui::TextInputState TerminalView::textInputState() const
{
ui::TextInputState state;
const Point cursor = _screenWindow ? _screenWindow->cursorPosition() : Point(0, 0);
state.cursorRectangle = {double(_leftMargin + _metrics.width * cursor.x()),
double(_topMargin + _metrics.height * cursor.y()), double(_metrics.width),
double(_metrics.height)};
const ui::PointF origin = mapToWindow({0, 0});
state.cursorRectangle.x += origin.x;
state.cursorRectangle.y += origin.y;
// ImhNoPredictiveText | ImhNoAutoUppercase.
state.hints = ui::NoTextHint;
return state;
}
void TerminalView::textInput(const ui::TextInputEvent& event)
{
if (!event.commit.empty()) {
KeyEvent key{0, NoModifier, event.commit};
keyPressed(key, false);
}
std::wstring preedit;
for (char32_t c : strings::utf8ToUtf32(event.preedit))
preedit.push_back(wchar_t(c));
_preedit = preedit;
requestPaint();
}
/* ------------------------------------------------------------------------- */
/* */
/* Clipboard */
/* */
/* ------------------------------------------------------------------------- */
void TerminalView::setSelection(const std::string& text)
{
if (ui::Clipboard::supportsSelection())
ui::Clipboard::setText(text, ui::ClipboardMode::Selection);
}
bool TerminalView::hasSelection() const
{
return _screenWindow && !_screenWindow->selectedText(false).empty();
}
void TerminalView::selectAll()
{
if (!_screenWindow)
return;
_screenWindow->selectAll();
setSelection(_screenWindow->selectedText(_preserveLineBreaks));
}
std::string TerminalView::selectedText() const
{
return _screenWindow ? _screenWindow->selectedText(_preserveLineBreaks) : std::string();
}
void TerminalView::copyClipboard()
{
if (!_screenWindow)
return;
const std::string text = _screenWindow->selectedText(_preserveLineBreaks);
if (!text.empty())
ui::Clipboard::setText(text);
}
void TerminalView::pasteClipboard()
{
emitSelection(false, false);
}
void TerminalView::pasteSelection()
{
emitSelection(true, false);
}
void TerminalView::emitSelection(bool useXselection, bool appendReturn)
{
if (!_screenWindow)
return;
// Paste Clipboard by simulating keypress events
auto paste = [weak = std::weak_ptr<bool>(_alive), this, appendReturn](std::string text) {
if (!weak.lock())
return;
pasteText(text, appendReturn);
};
ui::Clipboard::requestText(paste, useXselection ? ui::ClipboardMode::Selection : ui::ClipboardMode::Clipboard);
}
// QString::replace(QRegularExpression("\\r+$"), ""): trailing carriage returns.
static void trimTrailingReturns(std::u16string& text)
{
while (!text.empty() && text.back() == u'\r')
text.pop_back();
}
static void replaceAll(std::u16string& text, const std::u16string& from, const std::u16string& to)
{
size_t position = 0;
while ((position = text.find(from, position)) != std::u16string::npos) {
text.replace(position, from.size(), to);
position += to.size();
}
}
void TerminalView::pasteText(const std::string& utf8, bool appendReturn)
{
if (!_screenWindow)
return;
std::u16string text = strings::utf8ToUtf16(utf8);
if (text.empty())
return;
replaceAll(text, u"\r\n", u"\n");
std::replace(text.begin(), text.end(), u'\n', u'\r');
if (_trimPastedTrailingNewlines)
trimTrailingReturns(text);
if (_confirmMultilinePaste && text.find(u'\r') != std::u16string::npos) {
_pendingPaste = text;
_pendingPasteAppendReturn = appendReturn;
_pendingPasteIsDrop = false;
std::u16string shown = text;
std::replace(shown.begin(), shown.end(), u'\r', u'\n');
multilinePasteRequested(strings::utf16ToUtf8(shown));
return;
}
sendPaste(text, appendReturn);
}
void TerminalView::sendPaste(std::u16string text, bool appendReturn)
{
if (!_screenWindow)
return;
bracketText(text);
// appendReturn is intentionally handled _after_ enclosing texts with brackets as
// that feature is used to allow execution of commands immediately after paste.
if (appendReturn)
text.push_back(u'\r');
KeyEvent e{0, NoModifier, strings::utf16ToUtf8(text)};
keyPressed(e, true); // expose as a big fat keypress event
_screenWindow->clearSelection();
}
void TerminalView::bracketText(std::u16string& text) const
{
if (_bracketedPasteMode) {
text.insert(0, u"\033[200~");
text.append(u"\033[201~");
}
}
void TerminalView::confirmPaste()
{
if (_pendingPaste.empty())
return;
const std::u16string text = _pendingPaste;
_pendingPaste.clear();
if (_pendingPasteIsDrop) {
const std::string bytes = strings::utf16ToUtf8(text);
if (_session)
_session->emulation()->sendString(bytes.c_str());
} else {
sendPaste(text, _pendingPasteAppendReturn);
}
}
void TerminalView::dropText(const std::string& utf8)
{
std::u16string dropText = strings::utf8ToUtf16(utf8);
replaceAll(dropText, u"\r\n", u"\n");
std::replace(dropText.begin(), dropText.end(), u'\n', u'\r');
if (_trimPastedTrailingNewlines)
trimTrailingReturns(dropText);
if (_confirmMultilinePaste && dropText.find(u'\r') != std::u16string::npos) {
_pendingPaste = dropText;
_pendingPasteIsDrop = true;
std::u16string shown = dropText;
std::replace(shown.begin(), shown.end(), u'\r', u'\n');
multilinePasteRequested(strings::utf16ToUtf8(shown));
return;
}
const std::string bytes = strings::utf16ToUtf8(dropText);
if (_session)
_session->emulation()->sendString(bytes.c_str());
}
/* ------------------------------------------------------------------------- */
/* */
/* Bell */
/* */
/* ------------------------------------------------------------------------- */
void TerminalView::bell()
{
if (_bellMode == NoBell)
return;
//limit the rate at which bells can occur
//...mainly for sound effects where rapid bells in sequence
//produce a horrible noise
if (_allowBell) {
_allowBell = false;
_bellTimer.start(std::chrono::milliseconds(500));
if (_bellMode == SystemBeepBell) {
// QApplication::beep() does nothing on Wayland.
} else if (_bellMode == NotifyBell) {
notifyBell();
} else if (_bellMode == VisualBell) {
swapColorTable();
_swapTimer.start(std::chrono::milliseconds(200));
}
}
}
/* ------------------------------------------------------------------------- */
/* */
/* Links */
/* */
/* ------------------------------------------------------------------------- */
UrlFilter::HotSpot* TerminalView::linkHotSpotAt(TerminalImageFilterChain& chain, double x, double y)
{
if (_image.empty())
return nullptr;
int charLine = 0;
int charColumn = 0;
getCharacterCellAt({x, y}, charLine, charColumn);
// Matched on demand against the text on display.
chain.addFilter(new UrlFilter());
chain.setImage(_image.data(), _lines, _columns, _lineProperties);
chain.process();
return dynamic_cast<UrlFilter::HotSpot*>(chain.hotSpotAt(charLine, charColumn));
}
std::string TerminalView::linkAt(double x, double y)
{
TerminalImageFilterChain chain;
UrlFilter::HotSpot* spot = linkHotSpotAt(chain, x, y);
return spot ? spot->url() : std::string();
}
std::vector<TerminalView::Segment> TerminalView::linkUnderlineAt(double x, double y)
{
TerminalImageFilterChain chain;
UrlFilter::HotSpot* spot = linkHotSpotAt(chain, x, y);
if (!spot)
return {};
// Placed like the underline paintFilters() would draw.
std::vector<Segment> segments;
for (int line = spot->startLine(); line <= spot->endLine(); ++line) {
const int startColumn = line == spot->startLine() ? spot->startColumn() : 0;
int endColumn = _columns;
if (line == spot->endLine()) {
endColumn = spot->endColumn();
} else {
while (endColumn > startColumn
&& konsole_isspace(char16_t(_image[size_t(loc(endColumn - 1, line))].character)))
endColumn--;
}
const int bottom = (line + 1) * _metrics.height - 1 + _topMargin;
// QFontMetrics::underlinePos() is a whole number.
const int underline = bottom - _metrics.descent + kRound(_metrics.underlinePos);
segments.push_back({double(startColumn * _metrics.width + _leftBaseMargin), double(underline),
double((endColumn - startColumn) * _metrics.width)});
}
return segments;
}
/* ------------------------------------------------------------------------- */
/* */
/* Find */
/* */
/* ------------------------------------------------------------------------- */
void TerminalView::find(const std::string& text, bool forwards, bool fromSelection, bool caseSensitive)
{
if (!_screenWindow || !_session)
return;
if (text.empty()) {
clearFind();
return;
}
Emulation* emulation = _session->emulation();
int startColumn = 0;
int startLine = emulation->lineCount();
if (fromSelection && hasSelection()) {
if (forwards) {
_screenWindow->screen()->getSelectionEnd(startColumn, startLine);
startColumn++;
} else {
_screenWindow->screen()->getSelectionStart(startColumn, startLine);
}
} else if (forwards) {
startLine = 0;
}
const RegExp regExp(RegExp::escape(strings::utf8ToUtf16(text)),
caseSensitive ? RegExp::NoOption : RegExp::CaseInsensitive);
HistorySearch search(emulation, regExp, forwards, startColumn, startLine);
const std::optional<HistorySearch::Result> match = search.search();
if (match) {
// Centre the match rather than pinning it to the top edge.
_screenWindow->scrollTo(std::max(0, match->startLine - _screenWindow->windowLines() / 2));
_screenWindow->setTrackOutput(false);
_screenWindow->notifyOutputChanged();
_screenWindow->setSelectionStart(match->startColumn, match->startLine - _screenWindow->currentLine(), false);
_screenWindow->setSelectionEnd(match->endColumn, match->endLine - _screenWindow->currentLine());
findResult(true);
} else {
_screenWindow->clearSelection();
findResult(false);
}
}
void TerminalView::clearFind()
{
if (_screenWindow)
_screenWindow->clearSelection();
}
/* ------------------------------------------------------------------------- */
/* */
/* Painting */
/* */
/* ------------------------------------------------------------------------- */
namespace
{
// What TerminalGpuNode did for a frame: cell backgrounds, the cursor and box
// drawing as device-pixel rects, glyphs at whole device pixels.
class FramePainter
{
public:
FramePainter(ui::Painter& painter, ui::PointF origin)
: m_painter(painter)
, m_scale(painter.scale())
, m_origin{origin.x * painter.scale(), origin.y * painter.scale()}
, m_device(painter.toDevice(origin.x), painter.toDevice(origin.y))
{
}
double scale() const { return m_scale; }
// Window device pixels from the painter's origin, as fillDeviceRect and
// GlyphRenderer place them.
int fromWindowX(int device) const { return device - m_device.x(); }
int fromWindowY(int device) const { return device - m_device.y(); }
int deviceX(double logical) const { return kRound(m_origin.x + logical * m_scale); }
int deviceY(double logical) const { return kRound(m_origin.y + logical * m_scale); }
// Device pixels of the window, filled exactly.
void fill(const cutefish::base::Rect& device, const Color& color)
{
if (device.isEmpty() || color.a == 0)
return;
ui::fillDeviceRect(m_painter,
{device.x() - m_device.x(), device.y() - m_device.y(), device.width(), device.height()},
color);
}
// Filled after the glyphs: decorations, box drawing, thin cursors.
void fillOver(const cutefish::base::Rect& device, const Color& color)
{
if (!device.isEmpty() && color.a != 0)
m_over.push_back({device, color});
}
void flushOver()
{
for (const auto& [rect, color] : m_over)
fill(rect, color);
m_over.clear();
}
ui::Painter& painter() { return m_painter; }
private:
ui::Painter& m_painter;
double m_scale;
ui::PointF m_origin;
cutefish::base::Point m_device;
std::vector<std::pair<cutefish::base::Rect, Color>> m_over;
};
} // namespace
static cutefish::base::Rect rectFromCorners(int left, int top, int right, int bottom)
{
// QRect(QPoint, QPoint): both corners inside.
return cutefish::base::Rect(left, top, std::max(0, right - left + 1), std::max(0, bottom - top + 1));
}
// drawLineChar() as device pixel rects. Edges go through the same mapping as
// the cells, so strokes cover what QPainter's aliased lines would, and meet
// the neighbouring cells' strokes exactly.
static void addLineChar(FramePainter& frame, double left, double top, int w, int h, int scaleX, int scaleY,
uint8_t code, bool bold, const Color& color)
{
const uint32_t toDraw = LineChars[code];
const int cx = w / 2;
const int cy = h / 2;
// A bold stroke is three pixels wide, and its square caps reach one further.
const int grow = bold ? 1 : 0;
auto rect = [&](int x0, int y0, int x1, int y1) {
const int left0 = frame.deviceX(left + std::clamp(x0, 0, w) * scaleX);
const int top0 = frame.deviceY(top + std::clamp(y0, 0, h) * scaleY);
const int right = std::max(left0 + 1, frame.deviceX(left + std::clamp(x1, 0, w) * scaleX));
const int bottom = std::max(top0 + 1, frame.deviceY(top + std::clamp(y1, 0, h) * scaleY));
frame.fillOver(cutefish::base::Rect(left0, top0, right - left0, bottom - top0), color);
};
// Both ends inclusive, as QPainter::drawLine() takes them.
auto vertical = [&](int x, int y0, int y1) { rect(x - grow, y0 - grow, x + 1 + grow, y1 + 1 + grow); };
auto horizontal = [&](int y, int x0, int x1) { rect(x0 - grow, y - grow, x1 + 1 + grow, y + 1 + grow); };
auto point = [&](int x, int y) { rect(x - grow, y - grow, x + 1 + grow, y + 1 + grow); };
if (toDraw & TopL)
vertical(cx - 1, 0, cy - 2);
if (toDraw & TopC)
vertical(cx, 0, cy - 2);
if (toDraw & TopR)
vertical(cx + 1, 0, cy - 2);
if (toDraw & BotL)
vertical(cx - 1, cy + 2, h - 1);
if (toDraw & BotC)
vertical(cx, cy + 2, h - 1);
if (toDraw & BotR)
vertical(cx + 1, cy + 2, h - 1);
if (toDraw & LeftT)
horizontal(cy - 1, 0, cx - 2);
if (toDraw & LeftC)
horizontal(cy, 0, cx - 2);
if (toDraw & LeftB)
horizontal(cy + 1, 0, cx - 2);
if (toDraw & RightT)
horizontal(cy - 1, cx + 2, w - 1);
if (toDraw & RightC)
horizontal(cy, cx + 2, w - 1);
if (toDraw & RightB)
horizontal(cy + 1, cx + 2, w - 1);
if (toDraw & Int11)
point(cx - 1, cy - 1);
if (toDraw & Int12)
point(cx, cy - 1);
if (toDraw & Int13)
point(cx + 1, cy - 1);
if (toDraw & Int21)
point(cx - 1, cy);
if (toDraw & Int22)
point(cx, cy);
if (toDraw & Int23)
point(cx + 1, cy);
if (toDraw & Int31)
point(cx - 1, cy + 1);
if (toDraw & Int32)
point(cx, cy + 1);
if (toDraw & Int33)
point(cx + 1, cy + 1);
}
// drawOtherLineChar(): the dashes, arcs and diagonals LineChars has no entry
// for. The glyph atlas rasterised them with an unantialiased QPainter scaled
// to the device, a pen of one logical pixel (three for bold), so they are
// drawn the same way into a bitmap and its pixels filled as device rects.
static void addOtherLineChar(FramePainter& frame, double left, double top, int w, int h, int scaleX, int scaleY,
uint8_t code, bool bold, const Color& color)
{
const double scale = frame.scale();
const int padX = int(std::ceil(w * scale));
const int padY = int(std::ceil(h * scale / 2));
ui::Bitmap bitmap(int(std::ceil(w * scale)) + 2 * padX, int(std::ceil(h * scale)) + 2 * padY,
ui::Bitmap::Format::Alpha8);
if (bitmap.isNull())
return;
ui::BitmapPainter painter(bitmap);
painter.translate(padX, padY);
painter.scale(scale, scale);
const double penWidth = bold ? 3 : 1;
const Color ink{255, 255, 255, 255};
auto line = [&](int x0, int y0, int x1, int y1) {
painter.drawLine({double(x0), double(y0)}, {double(x1), double(y1)}, ink, penWidth, ui::LineCap::Square);
};
const int cx = w / 2;
const int cy = h / 2;
const int ex = w - 1;
const int ey = h - 1;
// Double dashes
if (0x4C <= code && code <= 0x4F) {
const int xHalfGap = std::max(w / 15, 1);
const int yHalfGap = std::max(h / 15, 1);
switch (code) {
case 0x4D: // BOX DRAWINGS HEAVY DOUBLE DASH HORIZONTAL
line(0, cy - 1, cx - xHalfGap - 1, cy - 1);
line(0, cy + 1, cx - xHalfGap - 1, cy + 1);
line(cx + xHalfGap, cy - 1, ex, cy - 1);
line(cx + xHalfGap, cy + 1, ex, cy + 1);
[[fallthrough]];
case 0x4C: // BOX DRAWINGS LIGHT DOUBLE DASH HORIZONTAL
line(0, cy, cx - xHalfGap - 1, cy);
line(cx + xHalfGap, cy, ex, cy);
break;
case 0x4F: // BOX DRAWINGS HEAVY DOUBLE DASH VERTICAL
line(cx - 1, 0, cx - 1, cy - yHalfGap - 1);
line(cx + 1, 0, cx + 1, cy - yHalfGap - 1);
line(cx - 1, cy + yHalfGap, cx - 1, ey);
line(cx + 1, cy + yHalfGap, cx + 1, ey);
[[fallthrough]];
case 0x4E: // BOX DRAWINGS LIGHT DOUBLE DASH VERTICAL
line(cx, 0, cx, cy - yHalfGap - 1);
line(cx, cy + yHalfGap, cx, ey);
break;
}
}
// Rounded corner characters
else if (0x6D <= code && code <= 0x70) {
const int r = w * 3 / 8;
const int d = 2 * r;
// QPainter::drawArc(x, y, d, d, start, 90 degrees).
auto arc = [&](int x, int y, double startDegrees) {
ui::Path path;
path.arcTo({double(x), double(y), double(d), double(d)}, startDegrees, 90);
painter.strokePath(path, ink, penWidth, ui::LineCap::Square, ui::LineJoin::Bevel);
};
switch (code) {
case 0x6D: // BOX DRAWINGS LIGHT ARC DOWN AND RIGHT
line(cx, cy + r, cx, ey);
line(cx + r, cy, ex, cy);
arc(cx, cy, 90);
break;
case 0x6E: // BOX DRAWINGS LIGHT ARC DOWN AND LEFT
line(cx, cy + r, cx, ey);
line(0, cy, cx - r, cy);
arc(cx - d, cy, 0);
break;
case 0x6F: // BOX DRAWINGS LIGHT ARC UP AND LEFT
line(cx, 0, cx, cy - r);
line(0, cy, cx - r, cy);
arc(cx - d, cy - d, 270);
break;
case 0x70: // BOX DRAWINGS LIGHT ARC UP AND RIGHT
line(cx, 0, cx, cy - r);
line(cx + r, cy, ex, cy);
arc(cx, cy - d, 180);
break;
}
}
// Diagonals
else if (0x71 <= code && code <= 0x73) {
switch (code) {
case 0x71: // BOX DRAWINGS LIGHT DIAGONAL UPPER RIGHT TO LOWER LEFT
line(ex, 0, 0, ey);
break;
case 0x72: // BOX DRAWINGS LIGHT DIAGONAL UPPER LEFT TO LOWER RIGHT
line(0, 0, ex, ey);
break;
case 0x73: // BOX DRAWINGS LIGHT DIAGONAL CROSS
line(ex, 0, 0, ey);
line(0, 0, ex, ey);
break;
}
}
// Each run of covered pixels in a row as one rect, stretched as the atlas
// quad was for double-width and double-height lines.
const int cellX = frame.deviceX(left);
const int cellY = frame.deviceY(top);
for (int y = 0; y < bitmap.height(); ++y) {
int x = 0;
while (x < bitmap.width()) {
if (bitmap.alpha(x, y) < 128) {
++x;
continue;
}
const int start = x;
while (x < bitmap.width() && bitmap.alpha(x, y) >= 128)
++x;
frame.fillOver(cutefish::base::Rect(cellX + (start - padX) * scaleX, cellY + (y - padY) * scaleY,
(x - start) * scaleX, scaleY),
color);
}
}
}
// Mirrors TerminalGpuNode::build(), which mirrored TerminalDisplay::paint().
void TerminalView::paint(ui::Painter& painter)
{
// The window repaints its focus view when the keyboard comes or goes.
if (hasKeyboard()) {
if (_hasBlinkingCursor && !_blinkCursorTimer.isActive())
_blinkCursorTimer.start(std::chrono::milliseconds(CURSOR_BLINK_INTERVAL));
} else if (_blinkCursorTimer.isActive()) {
_blinkCursorTimer.stop();
_cursorBlinking = false;
}
if (_image.empty() || geometry().width <= 0 || geometry().height <= 0)
return;
FramePainter frame(painter, painter.offset());
const int fw = _metrics.width;
const int fh = _metrics.height;
const double dpr = frame.scale();
const int lineThickness = std::max(1, kRound(dpr));
const double underlinePos = _metrics.underlinePos;
const double strikeOutPos = _metrics.strikeOutPos;
const double overlinePos = _metrics.overlinePos;
const int decorationThickness = std::max(1, kRound(_metrics.lineWidth * dpr));
const Color frameBackground = _colorTable[DEFAULT_BACK_COLOR].color;
if (_opacity > 0) {
frame.fill(rectFromCorners(frame.deviceX(0), frame.deviceY(0), frame.deviceX(geometry().width) - 1,
frame.deviceY(geometry().height) - 1),
frameBackground.withAlpha(_opacity));
}
// The cursor; returns whether the text under it takes the cell's background colour.
auto addCursor = [&](double left, double top, double width, double scaleY, const Color& foreground) {
const Color color = foreground;
const double height = (fh - (_fullCursorHeight ? 0 : _lineSpacing - 1)) * scaleY;
const cutefish::base::Rect rect = rectFromCorners(frame.deviceX(left), frame.deviceY(top),
frame.deviceX(left + width) - 1,
frame.deviceY(top + height) - 1);
switch (_cursorShape) {
case 1:
frame.fillOver(cutefish::base::Rect(rect.x(), rect.bottom() - lineThickness, rect.width(), lineThickness),
color);
return false;
case 2:
frame.fillOver(cutefish::base::Rect(rect.x(), rect.y(), lineThickness, rect.height()), color);
return false;
default:
frame.fill(rect, color);
return true;
}
};
auto addDecorations = [&](const cutefish::base::Rect& cell, double top, int scaleY, bool underline,
bool strikeOut, bool overline, const Color& color) {
const double baseline = top + (_metrics.ascent + _lineSpacing) * scaleY;
auto line = [&](double y) {
frame.fillOver(cutefish::base::Rect(cell.x(), frame.deviceY(y), cell.width(), decorationThickness * scaleY),
color);
};
if (underline)
line(baseline + underlinePos * scaleY);
if (strikeOut)
line(baseline - strikeOutPos * scaleY);
if (overline)
line(baseline - overlinePos * scaleY);
};
auto styleOf = [&](const Character& c) {
int style = TerminalFont::Regular;
if ((c.rendition & RE_BOLD) && _boldIntense)
style |= TerminalFont::Bold;
if ((c.rendition & RE_ITALIC) && _italicEnabled)
style |= TerminalFont::Italic;
return style;
};
const Point cursorPos = _screenWindow ? _screenWindow->cursorPosition() : Point(0, 0);
const int preeditCells = _preedit.empty() ? 0 : string_width(_preedit);
const int usedLines = drawnLines();
// The atlas drew a glyph with its origin at the cell's left and its baseline
// (ascent + line spacing) * dpr below the row's top, stretched from there.
struct Glyph
{
std::u32string cluster;
int style;
Color color;
int x;
int rowTop;
int scaleX;
int scaleY;
};
std::vector<Glyph> glyphs;
for (int y = 0; y < usedLines; ++y) {
const LineProperty property = y < int(_lineProperties.size()) ? _lineProperties[size_t(y)] : LineProperty(0);
const int scaleX = (property & LINE_DOUBLEWIDTH) ? 2 : 1;
const int scaleY = (property & LINE_DOUBLEHEIGHT) ? 2 : 1;
const double top = _topMargin + y * fh;
const int rowTop = frame.deviceY(top);
const int rowBottom = frame.deviceY(top + fh * scaleY);
const Character* line = &_image[size_t(y * _columns)];
for (int x = 0; x < _usedColumns; ++x) {
const Character& c = line[x];
const int cells = (x + 1 < _usedColumns && line[x + 1].character == 0) ? 2 : 1;
// The preedit string covers these cells.
if (preeditCells && y == cursorPos.y() && x >= cursorPos.x() && x < cursorPos.x() + preeditCells) {
x += cells - 1;
continue;
}
const double left = _leftMargin + x * fw * scaleX;
const double width = fw * scaleX * cells;
const cutefish::base::Rect cell = rectFromCorners(frame.deviceX(left), rowTop,
frame.deviceX(left + width) - 1, rowBottom - 1);
const Color foreground = c.foregroundColor.color(_colorTable);
const Color background = c.backgroundColor.color(_colorTable);
if (background != frameBackground)
frame.fill(cell, background);
bool invert = false;
if ((c.rendition & RE_CURSOR) && !_cursorBlinking)
invert = addCursor(left, top, width, scaleY, foreground);
x += cells - 1;
if (_blinking && (c.rendition & RE_BLINK))
continue;
const Color color = invert ? background : foreground;
const int style = styleOf(c);
addDecorations(cell, top, scaleY, c.rendition & RE_UNDERLINE, false, false, color);
if (!c.character || c.character == L' ')
continue;
if (_drawLineChars && c.isLineChar()) {
const uint8_t code = uint8_t(c.character & 0xff);
const bool bold = (c.rendition & RE_BOLD) && _boldIntense;
if (LineChars[code])
addLineChar(frame, left, top, fw, fh, scaleX, scaleY, code, bold, color);
else
addOtherLineChar(frame, left, top, fw, fh, scaleX, scaleY, code, bold, color);
continue;
}
std::u32string cluster;
if (c.rendition & RE_EXTENDED_CHAR) {
ushort length = 0;
const uint* chars = ExtendedCharTable::instance.lookupExtendedChar(c.character, length);
if (chars)
cluster.assign(chars, chars + length);
} else {
cluster.push_back(char32_t(c.character));
}
if (!cluster.empty())
glyphs.push_back({std::move(cluster), style, color, cell.x(), rowTop, scaleX, scaleY});
}
// Both halves of a double-height line hold the same text; the first draws it.
if (scaleY == 2)
++y;
}
// drawInputMethodPreeditString(): the default background, the cursor, then the text.
if (preeditCells && cursorPos.y() < usedLines) {
const double left = _leftMargin + cursorPos.x() * fw;
const double top = _topMargin + cursorPos.y() * fh;
const int rowTop = frame.deviceY(top);
const Character& style = _image[size_t(cursorPos.y() * _columns + cursorPos.x())];
Color background = _colorTable[DEFAULT_BACK_COLOR].color;
background = background.withAlpha(_opacity);
frame.fill(rectFromCorners(frame.deviceX(left), rowTop, frame.deviceX(left + fw * preeditCells) - 1,
frame.deviceY(top + fh) - 1),
background);
bool invert = false;
if (!_cursorBlinking)
invert = addCursor(left, top, fw * preeditCells, 1, _colorTable[DEFAULT_FORE_COLOR].color);
const Color color = (invert ? style.backgroundColor : style.foregroundColor).color(_colorTable);
const int glyphStyle = styleOf(style);
int column = 0;
size_t i = 0;
while (i < _preedit.size()) {
std::u32string cluster(1, char32_t(_preedit[i]));
const int cells = std::max(1, konsole_wcwidth(_preedit[i]));
for (++i; i < _preedit.size() && konsole_wcwidth(_preedit[i]) == 0; ++i)
cluster.push_back(char32_t(_preedit[i]));
glyphs.push_back({std::move(cluster), glyphStyle, color, frame.deviceX(left + column * fw), rowTop, 1,
1});
column += cells;
}
}
// Runs of one style, colour and row in one call; a stretched glyph alone, about its own cell.
const double baselineOffset = (_metrics.ascent + _lineSpacing) * dpr;
std::vector<ui::GlyphCluster> run;
for (size_t i = 0; i < glyphs.size();) {
const Glyph& first = glyphs[i];
run.clear();
size_t end = i;
do {
run.push_back({glyphs[end].cluster, double(frame.fromWindowX(glyphs[end].x))});
++end;
} while (end < glyphs.size() && first.scaleX == 1 && first.scaleY == 1 && glyphs[end].scaleX == 1
&& glyphs[end].scaleY == 1 && glyphs[end].style == first.style && glyphs[end].color == first.color
&& glyphs[end].rowTop == first.rowTop);
const int rowTop = frame.fromWindowY(first.rowTop);
_font->draw(painter, first.style, first.color, dpr, rowTop + baselineOffset, run,
ui::SizeF{double(first.scaleX), double(first.scaleY)},
ui::PointF{double(frame.fromWindowX(first.x)), double(rowTop)});
i = end;
}
frame.flushOver();
// The link under the pointer: underlined on hover, as one-pixel Rectangles.
for (const Segment& segment : _linkSegments)
painter.fillRect({segment.x, segment.y, segment.width, 1}, _linkColor);
}
/* ------------------------------------------------------------------------- */
/* */
/* The item's MouseArea and key handler */
/* */
/* ------------------------------------------------------------------------- */
static uint32_t buttonBit(ui::MouseButton button)
{
return 1u << int(button);
}
void TerminalView::updatePointerCursor()
{
if (!_linkSegments.empty() && _ctrlHeld)
View::setCursorShape(ui::CursorShape::Pointer);
else
View::setCursorShape(terminalUsesMouse() ? ui::CursorShape::Default : ui::CursorShape::Text);
}
void TerminalView::setLinkColor(Color color)
{
_linkColor = color;
if (!_linkSegments.empty())
requestPaint();
}
// Only a move to another cell can change the link under the pointer.
void TerminalView::updateLinkHover(ui::PointF position, uint32_t modifiers)
{
const bool ctrlHeld = (modifiers & ui::ControlModifier) != 0;
if (ctrlHeld != _ctrlHeld) {
_ctrlHeld = ctrlHeld;
updatePointerCursor();
}
_hoverPosition = position;
const std::pair<int, int> cell{int(std::floor(position.x / std::max(1, _metrics.width))),
int(std::floor(position.y / std::max(1, _metrics.height)))};
if (cell == _hoverCell)
return;
_hoverCell = cell;
_linkSegments = linkUnderlineAt(position.x, position.y);
updatePointerCursor();
requestPaint();
}
void TerminalView::refreshLinkHover()
{
if (_hoverPosition.x >= 0) {
_linkSegments = linkUnderlineAt(_hoverPosition.x, _hoverPosition.y);
updatePointerCursor();
requestPaint();
}
}
void TerminalView::clearLinkHover()
{
_hoverPosition = {-1, -1};
_hoverCell = {-1, -1};
if (!_linkSegments.empty()) {
_linkSegments.clear();
updatePointerCursor();
requestPaint();
}
}
void TerminalView::hoverMove(const ui::PointerEvent& event)
{
_lastPointer = event.position;
if (_buttons == 0)
updateLinkHover(event.position, event.modifiers);
}
void TerminalView::hoverChanged()
{
if (!isHovered())
clearLinkHover();
}
void TerminalView::pointerPress(const ui::PointerEvent& event)
{
const double x = event.position.x;
const double y = event.position.y;
_buttons |= buttonBit(event.button);
_menuPress = event.button == ui::MouseButton::Right
&& (!terminalUsesMouse() || (event.modifiers & ui::ShiftModifier));
_pressedLink = event.button == ui::MouseButton::Left && (event.modifiers & ui::ControlModifier)
? linkAt(x, y)
: std::string();
if (!_pressedLink.empty())
return;
if (!_menuPress)
simulateMousePress(x, y, event.button, event.modifiers);
// The second press of a double click, as Qt Quick delivers it after the press.
if (event.clickCount == 2)
simulateMouseDoubleClick(x, y, event.button, event.modifiers);
}
void TerminalView::pointerMove(const ui::PointerEvent& event)
{
_lastPointer = event.position;
if (!_menuPress && _pressedLink.empty())
simulateMouseMove(event.position.x, event.position.y, _buttons, event.modifiers);
}
void TerminalView::pointerRelease(const ui::PointerEvent& event)
{
const double x = event.position.x;
const double y = event.position.y;
_buttons &= ~buttonBit(event.button);
if (!_pressedLink.empty()) {
const std::string link = std::exchange(_pressedLink, std::string());
if (onLinkActivated)
onLinkActivated(link);
return;
}
if (_menuPress) {
_menuPress = false;
if (onContextMenu)
onContextMenu(x, y);
return;
}
simulateMouseRelease(x, y, event.button, event.modifiers);
// A right click the program took stays its own.
if (event.button == ui::MouseButton::Left && x >= 0 && y >= 0 && x < geometry().width && y < geometry().height)
setFocus(ui::FocusReason::Mouse);
}
bool TerminalView::keyRelease(const ui::KeyEvent& event)
{
if (event.key == XKB_KEY_Control_L || event.key == XKB_KEY_Control_R) {
_ctrlHeld = false;
updatePointerCursor();
}
return false;
}
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