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zoomwidget.cpp
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zoomwidget.cpp
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#include "zoomwidget.hpp"
#include "ui_zoomwidget.h"
#include <cmath>
#include <cstdio>
#include <QPainter>
#include <QMouseEvent>
#include <QRect>
#include <QGuiApplication>
#include <QOpenGLWidget>
#include <QCursor>
#include <QDateTime>
#include <QColor>
#include <QPainterPath>
#include <QList>
#include <QImageWriter>
#include <QBuffer>
#include <QFile>
#include <QFileInfo>
#include <QMimeData>
#include <QUrl>
#include <QFontMetrics>
#include <QFontDatabase>
ZoomWidget::ZoomWidget(QWidget *parent) : QWidget(parent), ui(new Ui::zoomwidget)
{
ui->setupUi(this);
setMouseTracking(true);
_activePen.setColor(QCOLOR_RED);
_activePen.setWidth(4*LINE_WIDTH_SCALE);
// Change the background color of the app
setPalette(QCOLOR_BACKGROUND);
setAutoFillBackground(true);
// Fonts
QFontDatabase::addApplicationFont(":/resources/Hack Nerd Font/HackNerdFont-Regular.ttf");
QFontDatabase::addApplicationFont(":/resources/Hack Nerd Font/HackNerdFont-Bold.ttf");
QFontDatabase::addApplicationFont(":/resources/Hack Nerd Font/HackNerdFont-Italic.ttf");
QFontDatabase::addApplicationFont(":/resources/Hack Nerd Font/HackNerdFont-BoldItalic.ttf");
setFont(QFont("Hack Nerd Font", 4*FONT_SCALE));
_desktopScreen = QGuiApplication::screenAt(QCursor::pos());
_windowSize = _desktopScreen->geometry().size();
_canvas.pos = QPoint(0, 0);
_canvas.size = QApplication::screenAt(QCursor::pos())->geometry().size();
_canvas.originalSize = _canvas.size;
_canvas.scale = 1.0f;
_canvas.freezePos = FREEZE_FALSE;
_canvas.dragging = false;
_state = STATE_MOVING;
_drawMode = LINE;
_screenOpts = SCREENOPTS_SHOW_ALL;
_boardMode = false;
_highlight = false;
_arrow = false;
_liveMode = false;
_flashlightMode = false;
_dynamicWidth = false;
_flashlightRadius = 80;
_popupTray.margin = 20;
_toolBar.show = false;
_resize.active = false;
_resize.type = NODE;
_lastMousePos = GET_CURSOR_POS();
_clipboard = QApplication::clipboard();
_recordTimer = new QTimer(this);
_popupTray.updateTimer = new QTimer(this);
_exitTimer = new QTimer(this);
connect(_recordTimer, &QTimer::timeout, this, &ZoomWidget::saveFrameToFile);
connect(_popupTray.updateTimer, &QTimer::timeout, this, &ZoomWidget::updateForPopups);
connect(_exitTimer, &QTimer::timeout, this, [=]() { toggleAction(ACTION_ESCAPE_CANCEL); });
QDir tempFolder(QStandardPaths::writableLocation(QStandardPaths::TempLocation));
_recordTempFile = new QFile(tempFolder.absoluteFilePath(RECORD_TEMP_FILENAME));
_ffmpeg.setProcessChannelMode(_ffmpeg.ForwardedChannels); // Show the ffmpeg output on the screen
// Don't create a file if the setProcessChannelMode is set, because it's an
// inconsistency
// ffmpeg.setStandardErrorFile("ffmpeg_log.txt");
// ffmpeg.setStandardOutputFile("ffmpeg_output.txt");
if (!_clipboard) {
logUser(LOG_ERROR, "", "Couldn't grab the clipboard");
}
setPopupTrayPos();
loadButtons();
generateToolBar();
}
ZoomWidget::~ZoomWidget()
{
delete ui;
}
bool ZoomWidget::isToolBarVisible()
{
bool visibleStates = (
// Show tool bar to escape from the mode
_state == STATE_TO_TRIM
|| _state == STATE_DELETING
|| _state == STATE_COLOR_PICKER
|| (_state == STATE_RESIZE && !_resize.active)
|| _state == STATE_MOVING // Normal state
);
return _toolBar.show
&& !_canvas.dragging
&& visibleStates;
}
void ZoomWidget::toggleAction(const Action action)
{
if (!isActionActive(action)) return;
// The guardian clauses for each action should be in isActionDisabled()
switch (action) {
case ACTION_LINE: _drawMode = LINE; break;
case ACTION_FREEFORM: _drawMode = FREEFORM; break;
case ACTION_RECTANGLE:
_drawMode = RECTANGLE;
_arrow = false;
break;
case ACTION_ELLIPSE:
_drawMode = ELLIPSE;
_arrow = false;
break;
case ACTION_TEXT:
_drawMode = TEXT;
_arrow = false;
break;
case ACTION_HIGHLIGHT: _highlight = !_highlight; break;
case ACTION_FLASHLIGHT: _flashlightMode = !_flashlightMode; break;
case ACTION_BLACKBOARD: _boardMode = !_boardMode; break;
case ACTION_ARROW: _arrow = !_arrow; break;
case ACTION_DYNAMIC_WIDTH: _dynamicWidth = !_dynamicWidth; break;
case ACTION_RESIZE:
// Disable this modes to enable to select all the drawings
_arrow = false;
_highlight = false;
if (_state == STATE_MOVING) {
_state = STATE_RESIZE;
} else if (_state == STATE_RESIZE) {
_state = STATE_MOVING;
}
break;
case ACTION_DELETE:
if (_state == STATE_MOVING) {
_state = STATE_DELETING;
} else if (_state == STATE_DELETING) {
_state = STATE_MOVING;
}
break;
case ACTION_CLEAR:
for (int i=0; i<_forms.size(); i++) {
Form f = _forms.takeAt(i);
f.deleted = true;
_forms.insert(i, f);
_deletedHistory.append(i);
}
_state = STATE_MOVING;
break;
case ACTION_DELETE_LAST: {
int i=_forms.size()-1;
while (i>=0 && _forms.at(i).deleted) {
i--;
}
if (i!=-1) {
Form f = _forms.takeAt(i);
f.deleted = true;
_forms.insert(i, f);
_deletedHistory.append(i);
}
break;
}
case ACTION_UNDO_DELETE: {
int pos=_deletedHistory.takeLast();
Form f = _forms.takeAt(pos);
f.deleted = false;
_forms.insert(pos, f);
break;
}
case ACTION_RECORDING: {
if (IS_RECORDING) {
_recordTimer->stop();
createVideoFFmpeg();
_recordTempFile->remove();
break;
}
// Start recording
logUser(LOG_TEXT, "", "Temporary record file path: %s", QSTRING_TO_STRING(_recordTempFile->fileName()));
_recordTempFile->remove(); // Just in case for if it already exists
bool openTempFile = _recordTempFile->open(QIODevice::ReadWrite);
if (!openTempFile) {
logUser(LOG_ERROR, "", "Couldn't open the temp file for the bytes output");
_recordTempFile->close();
break;
}
_recordTimer->start(1000/RECORD_FPS);
QApplication::beep();
break;
}
case ACTION_FULLSCREEN:
if (isFullScreen()) showNormal();
else showFullScreen();
break;
case ACTION_PICK_COLOR:
if (_state == STATE_COLOR_PICKER) {
_state = STATE_MOVING;
_activePen.setColor(_colorBeforePickColorMode);
break;
}
_colorBeforePickColorMode = _activePen.color();
_state = STATE_COLOR_PICKER;
_activePen.setColor(GET_COLOR_UNDER_CURSOR());
break;
case ACTION_SAVE_TO_FILE:
saveImage(_canvas.pixmap, true);
break;
case ACTION_SAVE_TO_CLIPBOARD:
saveImage(_canvas.pixmap, false);
break;
case ACTION_SAVE_TRIMMED_TO_IMAGE:
// If the mode is active, disable it
if (_state == STATE_TO_TRIM && _trimDestination == TRIM_SAVE_TO_IMAGE) {
_state = STATE_MOVING;
break;
}
_state = STATE_TO_TRIM;
_trimDestination = TRIM_SAVE_TO_IMAGE;
_startDrawPoint = QPoint(0,0);
_endDrawPoint = QPoint(0,0);
break;
case ACTION_SAVE_TRIMMED_TO_CLIPBOARD:
// If the mode is active, disable it
if (_state == STATE_TO_TRIM && _trimDestination == TRIM_SAVE_TO_CLIPBOARD) {
_state = STATE_MOVING;
break;
}
_state = STATE_TO_TRIM;
_trimDestination = TRIM_SAVE_TO_CLIPBOARD;
_startDrawPoint = QPoint(0,0);
_endDrawPoint = QPoint(0,0);
break;
case ACTION_SAVE_PROJECT:
saveStateToFile();
break;
case ACTION_SCREEN_OPTS:
switch (_screenOpts) {
case SCREENOPTS_HIDE_ALL: _screenOpts = SCREENOPTS_SHOW_ALL; break;
case SCREENOPTS_HIDE_FLOATING: _screenOpts = SCREENOPTS_HIDE_ALL; break;
case SCREENOPTS_SHOW_ALL: _screenOpts = SCREENOPTS_HIDE_FLOATING; break;
}
break;
case ACTION_COLOR_RED: _activePen.setColor(QCOLOR_RED); break;
case ACTION_COLOR_GREEN: _activePen.setColor(QCOLOR_GREEN); break;
case ACTION_COLOR_BLUE: _activePen.setColor(QCOLOR_BLUE); break;
case ACTION_COLOR_CYAN: _activePen.setColor(QCOLOR_CYAN); break;
case ACTION_COLOR_ORANGE: _activePen.setColor(QCOLOR_ORANGE); break;
case ACTION_COLOR_MAGENTA: _activePen.setColor(QCOLOR_MAGENTA); break;
case ACTION_COLOR_YELLOW: _activePen.setColor(QCOLOR_YELLOW); break;
case ACTION_COLOR_WHITE: _activePen.setColor(QCOLOR_WHITE); break;
case ACTION_COLOR_BLACK: _activePen.setColor(QCOLOR_BLACK); break;
case ACTION_WIDTH_1: _activePen.setWidth(1*LINE_WIDTH_SCALE); break;
case ACTION_WIDTH_2: _activePen.setWidth(2*LINE_WIDTH_SCALE); break;
case ACTION_WIDTH_3: _activePen.setWidth(3*LINE_WIDTH_SCALE); break;
case ACTION_WIDTH_4: _activePen.setWidth(4*LINE_WIDTH_SCALE); break;
case ACTION_WIDTH_5: _activePen.setWidth(5*LINE_WIDTH_SCALE); break;
case ACTION_WIDTH_6: _activePen.setWidth(6*LINE_WIDTH_SCALE); break;
case ACTION_WIDTH_7: _activePen.setWidth(7*LINE_WIDTH_SCALE); break;
case ACTION_WIDTH_8: _activePen.setWidth(8*LINE_WIDTH_SCALE); break;
case ACTION_WIDTH_9: _activePen.setWidth(9*LINE_WIDTH_SCALE); break;
case ACTION_ESCAPE:
if (_exitTimer->isActive()) {
QApplication::beep();
QApplication::quit();
break;
}
if (_state == STATE_COLOR_PICKER) {
toggleAction(ACTION_PICK_COLOR);
} else if (_state == STATE_RESIZE) {
toggleAction(ACTION_RESIZE);
} else if (_state == STATE_DELETING) {
toggleAction(ACTION_DELETE);
} else if (_state == STATE_TRIMMING || _state == STATE_TO_TRIM) {
_state = STATE_MOVING;
} else if (_flashlightMode) {
toggleAction(ACTION_FLASHLIGHT);
} else if (_screenOpts == SCREENOPTS_HIDE_ALL) {
toggleAction(ACTION_SCREEN_OPTS);
} else if (_canvas.size != _canvas.originalSize) {
_canvas.scale = 1.0f;
scalePixmapAt(QPoint(0,0));
_canvas.pos = centerCanvas();
} else if (isDisabledMouseTracking() && _canvas.pos != centerCanvas()) {
_canvas.pos = centerCanvas();
} else if (IS_RECORDING) {
toggleAction(ACTION_RECORDING);
} else {
_exitTimer->start(EXIT_CONFIRMATION);
loadButtons();
generateToolBar();
}
break;
case ACTION_ESCAPE_CANCEL:
_exitTimer->stop();
loadButtons();
generateToolBar();
break;
case ACTION_SPACER: /* don't do anything here */ break;
}
updateCursorShape();
update();
}
Form ZoomWidget::smoothFreeForm(Form form)
{
// Iterate over the points, and make the average between the previous and the
// next point
for (int i=1; i<form.points.size()-1; i++) {
const QPoint start = form.points.at(i-1);
const QPoint end = form.points.at(i+1);
form.points.replace(i, (start + end) / 2);
}
return form;
}
void ZoomWidget::loadButtons()
{
_toolBar.buttons.clear();
QRect nullRect(0, 0, 0, 0);
_toolBar.buttons.append(Button{ACTION_WIDTH_1, WIDTH_ICON, "1", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_WIDTH_2, WIDTH_ICON, "2", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_WIDTH_3, WIDTH_ICON, "3", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_WIDTH_4, WIDTH_ICON, "4", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_WIDTH_5, WIDTH_ICON, "5", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_WIDTH_6, WIDTH_ICON, "6", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_WIDTH_7, WIDTH_ICON, "7", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_WIDTH_8, WIDTH_ICON, "8", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_WIDTH_9, WIDTH_ICON, "9", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_DYNAMIC_WIDTH, DYNAMIC_ICON, "Dynamic", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_SPACER, "", "", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_COLOR_RED, COLOR_ICON, "Red", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_COLOR_GREEN, COLOR_ICON, "Green", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_COLOR_BLUE, COLOR_ICON, "Blue", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_COLOR_YELLOW, COLOR_ICON, "Yellow", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_COLOR_ORANGE, COLOR_ICON, "Orange", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_COLOR_MAGENTA, COLOR_ICON, "Magenta", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_COLOR_CYAN, COLOR_ICON, "Cyan", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_COLOR_WHITE, COLOR_ICON, "White", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_COLOR_BLACK, COLOR_ICON, "Black", 0, nullRect});
_toolBar.buttons.append(Button{ACTION_LINE, LINE_ICON, "Line", 1, nullRect});
_toolBar.buttons.append(Button{ACTION_RECTANGLE, RECT_ICON, "Rectangle", 1, nullRect});
_toolBar.buttons.append(Button{ACTION_ELLIPSE, ELLIPSE_ICON, "Ellipse", 1, nullRect});
_toolBar.buttons.append(Button{ACTION_FREEFORM, FREEFORM_ICON, "Free form", 1, nullRect});
_toolBar.buttons.append(Button{ACTION_TEXT, TEXT_ICON, "Text", 1, nullRect});
_toolBar.buttons.append(Button{ACTION_SPACER, "" , "", 1, nullRect});
_toolBar.buttons.append(Button{ACTION_ARROW, ARROW_ICON, "Arrow", 1, nullRect});
_toolBar.buttons.append(Button{ACTION_HIGHLIGHT, HIGHLIGHT_ICON, "Highlight", 1, nullRect});
_toolBar.buttons.append(Button{ACTION_SPACER, " ", "", 1, nullRect});
_toolBar.buttons.append(Button{ACTION_FULLSCREEN, FULLSCREEN_ICON, "Fullscreen", 1, nullRect});
_toolBar.buttons.append(Button{ACTION_FLASHLIGHT, FLASHLIGHT_ICON, "Flashlight", 2, nullRect});
_toolBar.buttons.append(Button{ACTION_BLACKBOARD, BLACKBOARD_ICON, "Blackboard", 2, nullRect});
_toolBar.buttons.append(Button{ACTION_PICK_COLOR, PICK_COLOR_ICON, "Pick color", 2, nullRect});
_toolBar.buttons.append(Button{ACTION_RESIZE, RESIZE_ICON, "Resize", 2, nullRect});
_toolBar.buttons.append(Button{ACTION_SCREEN_OPTS, SCREEN_OPTS_ICON, "Hide elements", 2, nullRect});
_toolBar.buttons.append(Button{ACTION_CLEAR, CLEAR_ICON, "Clear", 2, nullRect});
_toolBar.buttons.append(Button{ACTION_DELETE, DELETE_ICON, "Delete", 2, nullRect});
_toolBar.buttons.append(Button{ACTION_DELETE_LAST, UNDO_ICON, "Delete last", 2, nullRect});
_toolBar.buttons.append(Button{ACTION_UNDO_DELETE, REDO_ICON, "Undo delete", 2, nullRect});
_toolBar.buttons.append(Button{ACTION_SPACER, " ", "", 2, nullRect});
if (_exitTimer->isActive()) {
_toolBar.buttons.append(Button{ACTION_ESCAPE, EXIT_ICON, "Confirm Exit", 2, nullRect});
_toolBar.buttons.append(Button{ACTION_ESCAPE_CANCEL, CANCEL_ICON, "Cancel Exit", 2, nullRect});
} else {
_toolBar.buttons.append(Button{ACTION_ESCAPE, ESCAPE_ICON, "Escape", 2, nullRect});
}
_toolBar.buttons.append(Button{ACTION_SAVE_TO_FILE, EXPORT_IMG_ICON, "Export image", 3, nullRect});
_toolBar.buttons.append(Button{ACTION_SAVE_TO_CLIPBOARD, EXPORT_CLIP_ICON, "Export to clipboard", 3, nullRect});
_toolBar.buttons.append(Button{ACTION_SAVE_TRIMMED_TO_IMAGE, EXPORT_TRIM_IMG_ICON, "Export trimmed image", 3, nullRect});
_toolBar.buttons.append(Button{ACTION_SAVE_TRIMMED_TO_CLIPBOARD, EXPORT_TRIM_CLIP_ICON, "Export trimmed to clipboard", 3, nullRect});
_toolBar.buttons.append(Button{ACTION_SAVE_PROJECT, EXPORT_PROJECT_ICON, "Save project", 3, nullRect});
_toolBar.buttons.append(Button{ACTION_RECORDING, RECORD_ICON, "Record", 3, nullRect});
}
bool ZoomWidget::isActionActive(const Action action)
{
switch (action) {
case ACTION_WIDTH_1:
case ACTION_WIDTH_2:
case ACTION_WIDTH_3:
case ACTION_WIDTH_4:
case ACTION_WIDTH_5:
case ACTION_WIDTH_6:
case ACTION_WIDTH_7:
case ACTION_WIDTH_8:
case ACTION_WIDTH_9:
// Disable when dynamic width is enabled
return !(_drawMode == FREEFORM && _dynamicWidth);
case ACTION_COLOR_RED:
case ACTION_COLOR_GREEN:
case ACTION_COLOR_BLUE:
case ACTION_COLOR_YELLOW:
case ACTION_COLOR_ORANGE:
case ACTION_COLOR_MAGENTA:
case ACTION_COLOR_CYAN:
case ACTION_COLOR_WHITE:
case ACTION_COLOR_BLACK:
case ACTION_FLASHLIGHT:
case ACTION_BLACKBOARD:
case ACTION_SAVE_TO_FILE:
case ACTION_SAVE_TO_CLIPBOARD:
case ACTION_SAVE_PROJECT:
case ACTION_FULLSCREEN:
case ACTION_ESCAPE:
case ACTION_ESCAPE_CANCEL:
return true;
case ACTION_DYNAMIC_WIDTH:
return (_drawMode == FREEFORM && !_highlight);
case ACTION_HIGHLIGHT:
// Disable on Arrow or Dynamic width
return !(_arrow || _dynamicWidth);
case ACTION_ARROW:
return (_drawMode == LINE || _drawMode == FREEFORM) && (!_highlight);
case ACTION_TEXT:
case ACTION_ELLIPSE:
case ACTION_LINE:
case ACTION_RECTANGLE:
{
// If it's drawing a free form, it's disabled
const bool isDrawingAFreeForm = (!_forms.isEmpty() && _forms.last().active && _forms.last().type == FREEFORM);
const bool disabledModes = (_state==STATE_TYPING
|| _state==STATE_COLOR_PICKER
|| _state==STATE_TO_TRIM
|| _state==STATE_TRIMMING);
return !isDrawingAFreeForm && !disabledModes;
}
case ACTION_FREEFORM: {
const bool disabledModes = (_state==STATE_TYPING
|| _state==STATE_DRAWING
|| _state==STATE_COLOR_PICKER
|| _state==STATE_TO_TRIM
|| _state==STATE_TRIMMING);
return !disabledModes;
}
case ACTION_RESIZE: {
const bool hideAll = (_screenOpts == SCREENOPTS_HIDE_ALL);
const bool enabledModes = (_state == STATE_MOVING || _state == STATE_RESIZE);
bool isFormListEmpty = true;
int i=0;
while (i<_forms.size() && (_forms.at(i).deleted || _forms.at(i).type!=_drawMode)) i++;
if (i!=_forms.size()) isFormListEmpty = false;
return (!hideAll) && (enabledModes) && (!isFormListEmpty || _state == STATE_RESIZE);
}
case ACTION_SCREEN_OPTS:
return (_state == STATE_MOVING);
case ACTION_PICK_COLOR: {
const bool hideAll = (_screenOpts == SCREENOPTS_HIDE_ALL);
const bool enabledModes = (_state == STATE_MOVING || _state == STATE_COLOR_PICKER);
return (!hideAll) && (enabledModes);
}
case ACTION_UNDO_DELETE: {
const bool hideAll = (_screenOpts == SCREENOPTS_HIDE_ALL);
const bool enabledModes = (_state == STATE_MOVING);
bool isDeletedListEmpty = _deletedHistory.isEmpty();
return (!hideAll) && (enabledModes) && (!isDeletedListEmpty);
}
case ACTION_DELETE_LAST: {
const bool hideAll = (_screenOpts == SCREENOPTS_HIDE_ALL);
const bool enabledModes = (_state == STATE_MOVING);
bool isFormListEmpty = true;
int i = 0;
while (i<_forms.size() && _forms.at(i).deleted) i++;
if (i!=_forms.size()) isFormListEmpty = false;
return (!hideAll) && (enabledModes) && (!isFormListEmpty);
}
case ACTION_CLEAR: {
const bool hideAll = (_screenOpts == SCREENOPTS_HIDE_ALL);
const bool enabledModes = (_state == STATE_MOVING);
bool isFormListEmpty = true;
int i=0;
while (i<_forms.size() && _forms.at(i).deleted) i++;
if (i!=_forms.size()) isFormListEmpty = false;
return (!hideAll) && (enabledModes) && (!isFormListEmpty);
}
case ACTION_DELETE: {
const bool hideAll = (_screenOpts == SCREENOPTS_HIDE_ALL);
const bool enabledModes = (_state == STATE_MOVING || _state == STATE_DELETING);
bool isFormListEmpty = true;
int i=0;
while (i<_forms.size() && (_forms.at(i).deleted || _forms.at(i).type!=_drawMode)) i++;
if (i!=_forms.size()) isFormListEmpty = false;
return (!hideAll) && (enabledModes) && (!isFormListEmpty || _state == STATE_DELETING);
}
case ACTION_RECORDING:
// In theory, ffmpeg blocks the thread, so it shouldn't be possible to toggle
// the recording while ffmpeg is running. But, just in case, we check it
return !(IS_FFMPEG_RUNNING);
case ACTION_SAVE_TRIMMED_TO_IMAGE: case ACTION_SAVE_TRIMMED_TO_CLIPBOARD: {
const bool hideAll = (_screenOpts == SCREENOPTS_HIDE_ALL);
const bool enabledModes = (_state == STATE_MOVING || _state == STATE_TRIMMING || _state == STATE_TO_TRIM);
return (!hideAll) && (enabledModes);
}
case ACTION_SPACER:
logUser(LOG_ERROR, "", "You shouldn't check if a 'spacer' is disabled");
return false;
}
logUser(LOG_ERROR_AND_EXIT, "", "An action is not contemplated in the switch statement (%s:%d)", __FILE__, __LINE__);
return false;
}
ButtonStatus ZoomWidget::isButtonActive(const Button button)
{
if (!isActionActive(button.action)) {
return BUTTON_DISABLED;
}
bool actionStatus = false;
switch (button.action) {
case ACTION_WIDTH_1: actionStatus = (_activePen.width() == 1*LINE_WIDTH_SCALE); break;
case ACTION_WIDTH_2: actionStatus = (_activePen.width() == 2*LINE_WIDTH_SCALE); break;
case ACTION_WIDTH_3: actionStatus = (_activePen.width() == 3*LINE_WIDTH_SCALE); break;
case ACTION_WIDTH_4: actionStatus = (_activePen.width() == 4*LINE_WIDTH_SCALE); break;
case ACTION_WIDTH_5: actionStatus = (_activePen.width() == 5*LINE_WIDTH_SCALE); break;
case ACTION_WIDTH_6: actionStatus = (_activePen.width() == 6*LINE_WIDTH_SCALE); break;
case ACTION_WIDTH_7: actionStatus = (_activePen.width() == 7*LINE_WIDTH_SCALE); break;
case ACTION_WIDTH_8: actionStatus = (_activePen.width() == 8*LINE_WIDTH_SCALE); break;
case ACTION_WIDTH_9: actionStatus = (_activePen.width() == 9*LINE_WIDTH_SCALE); break;
case ACTION_DYNAMIC_WIDTH: actionStatus = (_dynamicWidth); break;
case ACTION_COLOR_RED: actionStatus = (_activePen.color() == QCOLOR_RED); break;
case ACTION_COLOR_GREEN: actionStatus = (_activePen.color() == QCOLOR_GREEN); break;
case ACTION_COLOR_BLUE: actionStatus = (_activePen.color() == QCOLOR_BLUE); break;
case ACTION_COLOR_YELLOW: actionStatus = (_activePen.color() == QCOLOR_YELLOW); break;
case ACTION_COLOR_ORANGE: actionStatus = (_activePen.color() == QCOLOR_ORANGE); break;
case ACTION_COLOR_MAGENTA: actionStatus = (_activePen.color() == QCOLOR_MAGENTA); break;
case ACTION_COLOR_CYAN: actionStatus = (_activePen.color() == QCOLOR_CYAN); break;
case ACTION_COLOR_WHITE: actionStatus = (_activePen.color() == QCOLOR_WHITE); break;
case ACTION_COLOR_BLACK: actionStatus = (_activePen.color() == QCOLOR_BLACK); break;
case ACTION_LINE: actionStatus = (_drawMode == LINE); break;
case ACTION_RECTANGLE: actionStatus = (_drawMode == RECTANGLE); break;
case ACTION_ELLIPSE: actionStatus = (_drawMode == ELLIPSE); break;
case ACTION_FREEFORM: actionStatus = (_drawMode == FREEFORM); break;
case ACTION_TEXT: actionStatus = (_drawMode == TEXT); break;
case ACTION_HIGHLIGHT: actionStatus = (_highlight); break;
case ACTION_FLASHLIGHT: actionStatus = (_flashlightMode); break;
case ACTION_BLACKBOARD: actionStatus = (_boardMode); break;
case ACTION_ARROW: actionStatus = (_arrow); break;
case ACTION_PICK_COLOR: actionStatus = (_state == STATE_COLOR_PICKER); break;
case ACTION_DELETE: actionStatus = (_state == STATE_DELETING); break;
case ACTION_RESIZE: actionStatus = (_state == STATE_RESIZE); break;
case ACTION_SCREEN_OPTS: actionStatus = (_screenOpts != SCREENOPTS_SHOW_ALL); break;
case ACTION_FULLSCREEN: actionStatus = isFullScreen(); break;
case ACTION_DELETE_LAST: return BUTTON_NO_STATUS;
case ACTION_UNDO_DELETE: return BUTTON_NO_STATUS;
case ACTION_CLEAR: return BUTTON_NO_STATUS;
case ACTION_SAVE_TO_FILE: return BUTTON_NO_STATUS;
case ACTION_SAVE_TO_CLIPBOARD: return BUTTON_NO_STATUS;
case ACTION_SAVE_PROJECT: return BUTTON_NO_STATUS;
case ACTION_RECORDING: actionStatus = IS_RECORDING; break;
case ACTION_SAVE_TRIMMED_TO_IMAGE:
actionStatus = (_state == STATE_TRIMMING || _state == STATE_TO_TRIM)
&& (_trimDestination == TRIM_SAVE_TO_IMAGE);
break;
case ACTION_SAVE_TRIMMED_TO_CLIPBOARD:
actionStatus = (_state == STATE_TRIMMING || _state == STATE_TO_TRIM)
&& (_trimDestination == TRIM_SAVE_TO_CLIPBOARD);
break;
case ACTION_ESCAPE: actionStatus = _exitTimer->isActive(); break;
case ACTION_ESCAPE_CANCEL: return BUTTON_NO_STATUS;
case ACTION_SPACER: logUser(LOG_ERROR, "", "You shouldn't check if a 'spacer' is active");
return BUTTON_NO_STATUS;
}
return (actionStatus) ? BUTTON_ACTIVE : BUTTON_INACTIVE;
}
void ZoomWidget::generateToolBar()
{
const int toolbarMargin = 20;
const int rowHeight = fontMetrics().height() * 3;
const int buttonPadding = 4;
const float spacerWidth = 0.4; // Percentage from the button width of that row
// Get the rows count
int rows = 0;
for (int i=0; i<_toolBar.buttons.size(); i++) {
const int rowNumber = _toolBar.buttons.at(i).row + 1; // 1 is the first row (don't start from 0)
if (rowNumber > rows) {
rows = rowNumber;
}
}
const QRect background(
toolbarMargin,
_windowSize.height() - toolbarMargin - rowHeight*rows,
_windowSize.width() - toolbarMargin*2,
rowHeight * rows
);
_toolBar.margin = toolbarMargin;
_toolBar.rowHeight = rowHeight;
_toolBar.rect = background;
// Get the count of buttons per row
float buttonsPerLine[rows];
for (int i=0; i<rows; i++) buttonsPerLine[i] = 0;
for (int i=0; i<_toolBar.buttons.size(); i++) {
float *line = &buttonsPerLine[ _toolBar.buttons.at(i).row ];
if (_toolBar.buttons.at(i).action == ACTION_SPACER) {
*line += spacerWidth;
} else {
*line += 1;
}
}
// Size and position the buttons
float buttonCount[rows];
for (int i=0; i<rows; i++) buttonCount[i]=0;
for (int i=0; i<_toolBar.buttons.size(); i++) {
const Button btn = _toolBar.buttons.at(i);
float width = (float)background.width() / buttonsPerLine[btn.row];
int height = rowHeight;
int x = background.x() + buttonCount[btn.row] * width;
int y = background.y() + btn.row * height;
if (btn.action == ACTION_SPACER) width *= spacerWidth;
// Padding
x += buttonPadding;
y += buttonPadding;
width -= buttonPadding*2;
height -= buttonPadding*2;
// Add the button to the count
buttonCount[btn.row] += (btn.action == ACTION_SPACER) ? spacerWidth : 1;
_toolBar.buttons.replace(i, Button{
.action = btn.action,
.icon = btn.icon,
.name = btn.name,
.row = btn.row,
.rect = QRect(x, y, width, height)
});
}
}
// Returns -1 if there's no button behind the cursor
int ZoomWidget::buttonBehindCursor(const QPoint cursor)
{
if (!_toolBar.show) {
logUser(LOG_ERROR, "Source code error", "cursorOverButton() was called, but the tool box is not visible");
}
for (int i=0; i<_toolBar.buttons.size(); i++) {
if (_toolBar.buttons.at(i).rect.contains(cursor)) return i;
}
return -1;
}
// The mouse pos shouldn't be fixed to the hdpi scaling
bool ZoomWidget::isCursorOverToolBar(const QPoint cursorPos)
{
if (!isToolBarVisible()) {
return false;
}
return isCursorInsideHitBox(
_toolBar.rect.x() - _toolBar.margin/2,
_toolBar.rect.y() - _toolBar.margin/2 ,
_toolBar.rect.width() + _toolBar.margin ,
_toolBar.rect.height() + _toolBar.margin ,
cursorPos,
true
);
}
// It doesn't make any distinction between disabled and not disabled buttons
bool ZoomWidget::isCursorOverButton(const QPoint cursorPos)
{
if (!isToolBarVisible()) {
return false;
}
const int button = buttonBehindCursor(cursorPos);
const bool isOverAButton = (button != -1);
const bool isNotASpacer = (_toolBar.buttons.at(button).action != ACTION_SPACER);
return isOverAButton && isNotASpacer;
}
void sendForm(QDataStream *out, Form data)
{
*out << data.type
<< data.points
<< data.pen
<< data.highlight
<< data.arrow
<< data.deleted
<< data.penWidths
<< data.active
<< data.caretPos
<< data.text;
}
Form receiveForm(QDataStream *in)
{
Form data;
*in >> data.type
>> data.points
>> data.pen
>> data.highlight
>> data.arrow
>> data.deleted
>> data.penWidths
>> data.active
>> data.caretPos
>> data.text;
return data;
}
void ZoomWidget::saveStateToFile()
{
QString filePath = getFilePath(FILE_ZOOMME);
QFile file(filePath);
if (!file.open(QIODevice::WriteOnly)) {
logUser(LOG_ERROR, "", "Couldn't create the file: %s", QSTRING_TO_STRING(filePath));
return;
}
QDataStream out(&file);
// There should be the same arguments that the restoreStateToFile()
out << _windowSize
<< _canvas.source
<< _canvas.originalSize
<< _fileConfig.name
<< _fileConfig.imageExt
<< _fileConfig.videoExt
<< _fileConfig.zoommeExt
<< _liveMode
<< _drawMode
<< _activePen
<< _highlight
<< _deletedHistory
<< _forms.size();
// Save the drawings
for (int i=0; i<_forms.size(); i++) {
sendForm(&out, _forms.at(i));
}
QApplication::beep();
logUser(LOG_SUCCESS, "Project file saved correctly!", "Project saved correctly: %s", QSTRING_TO_STRING(filePath));
}
void ZoomWidget::restoreStateFromFile(const QString path)
{
QFile file(path);
if (!file.open(QIODevice::ReadOnly)) {
logUser(LOG_ERROR_AND_EXIT, "", "Couldn't restore the state from the file");
}
long long formListSize = 0;
QPixmap savedPixmap;
QSize savedPixmapSize;
// There should be the same arguments that the saveStateToFile()
QDataStream in(&file);
in >> _windowSize
>> savedPixmap
>> savedPixmapSize
>> _fileConfig.name
>> _fileConfig.imageExt
>> _fileConfig.videoExt
>> _fileConfig.zoommeExt
>> _liveMode
>> _drawMode
>> _activePen
>> _highlight
>> _deletedHistory
>> formListSize;
resize(_windowSize);
_canvas.source = savedPixmap;
_canvas.size = savedPixmapSize;
_canvas.originalSize = savedPixmapSize;
_canvas.pos = centerCanvas();
generateToolBar();
// Read the drawings
for (int i=0; i<formListSize; i++) _forms.append(receiveForm(&in));
if (in.atEnd()) {
logUser(LOG_SUCCESS, "", "Recovery algorithm finished successfully (reached End Of File)");
} else {
logUser(LOG_ERROR_AND_EXIT, "", "There is data left in the ZoomMe file that was not loaded by the recovery algorithm (because it ended before the EOF). Please check the saving and the recovery algorithm: There may be some variables missing in the recovery and not in the saving or some variables added in the saving but not in the recovery...");
}
}
void ZoomWidget::createVideoFFmpeg()
{
QString resolution;
resolution.append(QString::number(_canvas.pixmap.width()));
resolution.append("x");
resolution.append(QString::number(_canvas.pixmap.height()));
// Read the video bytes and pipe it to FFmpeg...
// Arguments for FFmpeg taken from:
// https://github.com/tsoding/rendering-video-in-c-with-ffmpeg/blob/master/ffmpeg_linux.c
QList<QString> arguments;
// GLOBAL ARGS
arguments << "-hide_banner"
<< "-loglevel" << "warning"
<< "-y"
// INPUT ARGS
// No rawvideo because it's now compressed in jpeg
// << "-f" << "rawvideo"
<< "-pix_fmt" << "yuv420p" // Indicates that the file contains JPEG images
<< "-s" << resolution
<< "-r" << QString::number(RECORD_FPS)
<< "-i" << _recordTempFile->fileName()
// OUTPUT ARGS
// Commented to add support to GIF, for example
// << "-c:v" << "libx264"
// There's no audio, so no need for this flags
// << "-c:a" << "aac"
// << "-ab" << "200k"
<< "-vb" << "2500k"
// Commented because of a warning from FFmpeg
// https://superuser.com/questions/1273920/deprecated-pixel-format-used-make-sure-you-did-set-range-correctly
// << "-pix_fmt" << "yuv420p"
<< getFilePath(FILE_VIDEO);
// Start process
_ffmpeg.start("ffmpeg", arguments);
updateCursorShape();
const int timeout = 10000;
if (!_ffmpeg.waitForStarted(timeout)) {
logUser(LOG_ERROR, "Couldn't start FFmpeg. Maybe it is not installed...",
"Couldn't start ffmpeg or timeout occurred (%.1f sec.). Maybe FFmpeg is not installed. Killing the ffmpeg process...", ((float)timeout/1000.0));
logUser(LOG_TEXT, "", " - Error: %s", QSTRING_TO_STRING(_ffmpeg.errorString()));
logUser(LOG_TEXT, "", " - Executed command: ffmpeg %s", QSTRING_TO_STRING(arguments.join(" ")));
_ffmpeg.kill();
return;
}
if (!_ffmpeg.waitForFinished(-1)) {
logUser(LOG_ERROR, "", "An error occurred with FFmpeg: %s", QSTRING_TO_STRING(_ffmpeg.errorString()));
return;
}
if (_ffmpeg.exitStatus() == QProcess::CrashExit) {
logUser(LOG_ERROR, "","FFmpeg crashed");
return;
}
if (_ffmpeg.exitCode() != 0) {
logUser(LOG_ERROR, "", "FFmpeg failed. Exit code: %d", _ffmpeg.exitCode());
return;
}
logUser(LOG_SUCCESS, "", "Video encoding was successful! FFmpeg finished without any error...", QSTRING_TO_STRING(getFilePath(FILE_VIDEO)));
QApplication::beep();
}
void ZoomWidget::saveFrameToFile()
{
QImage image = _canvas.pixmap.toImage();
// Save the image as jpeg into a byte array (is not a raw image, it's
// compressed)
QByteArray imageBytes;
QBuffer buffer(&imageBytes); buffer.open(QIODevice::WriteOnly);
image.save(&buffer, "JPEG", RECORD_FRAME_QUALITY);
_recordTempFile->write(imageBytes);
}
QRect fixQRect(int x, int y, int width, int height)
{
// The width and height of the rectangle must be positive, otherwise strange
// things happen, like only showing the first word on texts, or draw an
// ellipse instead of rectangles
if (width < 0) { x+=width; width=abs(width); }
if (height < 0) { y+=height; height=abs(height); }