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qmltermwidget/lib/TerminalDisplay.h
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tsujan 54044133ce Added modes for background image (#385) 
* Added modes for background image

They are "None", "Stretch", "Zoom", "Fit" and "Center".

Some problems are fixed in the code for the following purposes:

  1. The background image isn't limited to translucent terminals.
  2. The background color isn't blended with the background image. Blending is not only ugly but unneeded. Instead, the user can use translucent images as the background.
  3. Image scaling is smooth and antialiasing.

A patch for QTerminal will follow this to use it.

* Just added some curly brackets
2021-03-01 01:25:54 +08:00

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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.
*/
#ifndef TERMINALDISPLAY_H
#define TERMINALDISPLAY_H
// Qt
#include <QColor>
#include <QPointer>
#include <QWidget>
// Konsole
#include "Filter.h"
#include "Character.h"
#include "qtermwidget.h"
//#include "konsole_export.h"
#define KONSOLEPRIVATE_EXPORT
class QDrag;
class QDragEnterEvent;
class QDropEvent;
class QLabel;
class QTimer;
class QEvent;
class QGridLayout;
class QKeyEvent;
class QScrollBar;
class QShowEvent;
class QHideEvent;
class QTimerEvent;
class QWidget;
//class KMenu;
namespace Konsole
{
enum MotionAfterPasting
{
// No move screenwindow after pasting
NoMoveScreenWindow = 0,
// Move start of screenwindow after pasting
MoveStartScreenWindow = 1,
// Move end of screenwindow after pasting
MoveEndScreenWindow = 2
};
enum BackgroundMode {
None,
Stretch,
Zoom,
Fit,
Center
};
extern unsigned short vt100_graphics[32];
class ScreenWindow;
/**
* A widget which displays output from a terminal emulation and sends input keypresses and mouse activity
* to the terminal.
*
* When the terminal emulation receives new output from the program running in the terminal,
* it will update the display by calling updateImage().
*
* TODO More documentation
*/
class KONSOLEPRIVATE_EXPORT TerminalDisplay : public QWidget
{
Q_OBJECT
public:
/** Constructs a new terminal display widget with the specified parent. */
TerminalDisplay(QWidget *parent=nullptr);
~TerminalDisplay() override;
/** Returns the terminal color palette used by the display. */
const ColorEntry* colorTable() const;
/** Sets the terminal color palette used by the display. */
void setColorTable(const ColorEntry table[]);
/**
* Sets the seed used to generate random colors for the display
* (in color schemes that support them).
*/
void setRandomSeed(uint seed);
/**
* Returns the seed used to generate random colors for the display
* (in color schemes that support them).
*/
uint randomSeed() const;
/** Sets the opacity of the terminal display. */
void setOpacity(qreal opacity);
/** Sets the background image of the terminal display. */
void setBackgroundImage(const QString& backgroundImage);
/** Sets the background image mode of the terminal display. */
void setBackgroundMode(BackgroundMode mode);
/**
* Specifies whether the terminal display has a vertical scroll bar, and if so whether it
* is shown on the left or right side of the display.
*/
void setScrollBarPosition(QTermWidget::ScrollBarPosition position);
/**
* Sets the current position and range of the display's scroll bar.
*
* @param cursor The position of the scroll bar's thumb.
* @param lines The maximum value of the scroll bar.
*/
void setScroll(int cursor, int lines);
/**
* Scroll to the bottom of the terminal (reset scrolling).
*/
void scrollToEnd();
/**
* Returns the display's filter chain. When the image for the display is updated,
* the text is passed through each filter in the chain. Each filter can define
* hotspots which correspond to certain strings (such as URLs or particular words).
* Depending on the type of the hotspots created by the filter ( returned by Filter::Hotspot::type() )
* the view will draw visual cues such as underlines on mouse-over for links or translucent
* rectangles for markers.
*
* To add a new filter to the view, call:
* viewWidget->filterChain()->addFilter( filterObject );
*/
FilterChain* filterChain() const;
/**
* Updates the filters in the display's filter chain. This will cause
* the hotspots to be updated to match the current image.
*
* WARNING: This function can be expensive depending on the
* image size and number of filters in the filterChain()
*
* TODO - This API does not really allow efficient usage. Revise it so
* that the processing can be done in a better way.
*
* eg:
* - Area of interest may be known ( eg. mouse cursor hovering
* over an area )
*/
void processFilters();
/**
* Returns a list of menu actions created by the filters for the content
* at the given @p position.
*/
QList<QAction*> filterActions(const QPoint& position);
/** Returns true if the cursor is set to blink or false otherwise. */
bool blinkingCursor() { return _hasBlinkingCursor; }
/** Specifies whether or not the cursor blinks. */
void setBlinkingCursor(bool blink);
/** Specifies whether or not text can blink. */
void setBlinkingTextEnabled(bool blink);
void setCtrlDrag(bool enable) { _ctrlDrag=enable; }
bool ctrlDrag() { return _ctrlDrag; }
/**
* This enum describes the methods for selecting text when
* the user triple-clicks within the display.
*/
enum TripleClickMode
{
/** Select the whole line underneath the cursor. */
SelectWholeLine,
/** Select from the current cursor position to the end of the line. */
SelectForwardsFromCursor
};
/** Sets how the text is selected when the user triple clicks within the display. */
void setTripleClickMode(TripleClickMode mode) { _tripleClickMode = mode; }
/** See setTripleClickSelectionMode() */
TripleClickMode tripleClickMode() { return _tripleClickMode; }
void setLineSpacing(uint);
void setMargin(int);
int margin() const;
uint lineSpacing() const;
void emitSelection(bool useXselection,bool appendReturn);
/** change and wrap text corresponding to paste mode **/
void bracketText(QString& text);
/**
* Sets the shape of the keyboard cursor. This is the cursor drawn
* at the position in the terminal where keyboard input will appear.
*
* In addition the terminal display widget also has a cursor for
* the mouse pointer, which can be set using the QWidget::setCursor()
* method.
*
* Defaults to BlockCursor
*/
void setKeyboardCursorShape(QTermWidget::KeyboardCursorShape shape);
/**
* Returns the shape of the keyboard cursor. See setKeyboardCursorShape()
*/
QTermWidget::KeyboardCursorShape keyboardCursorShape() const;
/**
* Sets the color used to draw the keyboard cursor.
*
* The keyboard cursor defaults to using the foreground color of the character
* underneath it.
*
* @param useForegroundColor If true, the cursor color will change to match
* the foreground color of the character underneath it as it is moved, in this
* case, the @p color parameter is ignored and the color of the character
* under the cursor is inverted to ensure that it is still readable.
* @param color The color to use to draw the cursor. This is only taken into
* account if @p useForegroundColor is false.
*/
void setKeyboardCursorColor(bool useForegroundColor , const QColor& color);
/**
* Returns the color of the keyboard cursor, or an invalid color if the keyboard
* cursor color is set to change according to the foreground color of the character
* underneath it.
*/
QColor keyboardCursorColor() const;
/**
* Returns the number of lines of text which can be displayed in the widget.
*
* This will depend upon the height of the widget and the current font.
* See fontHeight()
*/
int lines() { return _lines; }
/**
* Returns the number of characters of text which can be displayed on
* each line in the widget.
*
* This will depend upon the width of the widget and the current font.
* See fontWidth()
*/
int columns() { return _columns; }
/**
* Returns the height of the characters in the font used to draw the text in the display.
*/
int fontHeight() { return _fontHeight; }
/**
* Returns the width of the characters in the display.
* This assumes the use of a fixed-width font.
*/
int fontWidth() { return _fontWidth; }
void setSize(int cols, int lins);
void setFixedSize(int cols, int lins);
// reimplemented
QSize sizeHint() const override;
/**
* Sets which characters, in addition to letters and numbers,
* are regarded as being part of a word for the purposes
* of selecting words in the display by double clicking on them.
*
* The word boundaries occur at the first and last characters which
* are either a letter, number, or a character in @p wc
*
* @param wc An array of characters which are to be considered parts
* of a word ( in addition to letters and numbers ).
*/
void setWordCharacters(const QString& wc);
/**
* Returns the characters which are considered part of a word for the
* purpose of selecting words in the display with the mouse.
*
* @see setWordCharacters()
*/
QString wordCharacters() { return _wordCharacters; }
/**
* Sets the type of effect used to alert the user when a 'bell' occurs in the
* terminal session.
*
* The terminal session can trigger the bell effect by calling bell() with
* the alert message.
*/
void setBellMode(int mode);
/**
* Returns the type of effect used to alert the user when a 'bell' occurs in
* the terminal session.
*
* See setBellMode()
*/
int bellMode() { return _bellMode; }
/**
* This enum describes the different types of sounds and visual effects which
* can be used to alert the user when a 'bell' occurs in the terminal
* session.
*/
enum BellMode
{
/** A system beep. */
SystemBeepBell=0,
/**
* KDE notification. This may play a sound, show a passive popup
* or perform some other action depending on the user's settings.
*/
NotifyBell=1,
/** A silent, visual bell (eg. inverting the display's colors briefly) */
VisualBell=2,
/** No bell effects */
NoBell=3
};
void setSelection(const QString &t);
/**
* Reimplemented. Has no effect. Use setVTFont() to change the font
* used to draw characters in the display.
*/
virtual void setFont(const QFont &);
/** Returns the font used to draw characters in the display */
QFont getVTFont() { return font(); }
/**
* Sets the font used to draw the display. Has no effect if @p font
* is larger than the size of the display itself.
*/
void setVTFont(const QFont& font);
/**
* Specified whether anti-aliasing of text in the terminal display
* is enabled or not. Defaults to enabled.
*/
static void setAntialias( bool antialias ) { _antialiasText = antialias; }
/**
* Returns true if anti-aliasing of text in the terminal is enabled.
*/
static bool antialias() { return _antialiasText; }
/**
* Specify whether line chars should be drawn by ourselves or left to
* underlying font rendering libraries.
*/
void setDrawLineChars(bool drawLineChars) { _drawLineChars = drawLineChars; }
/**
* Specifies whether characters with intense colors should be rendered
* as bold. Defaults to true.
*/
void setBoldIntense(bool value) { _boldIntense = value; }
/**
* Returns true if characters with intense colors are rendered in bold.
*/
bool getBoldIntense() { return _boldIntense; }
/**
* Sets whether or not the current height and width of the
* terminal in lines and columns is displayed whilst the widget
* is being resized.
*/
void setTerminalSizeHint(bool on) { _terminalSizeHint=on; }
/**
* Returns whether or not the current height and width of
* the terminal in lines and columns is displayed whilst the widget
* is being resized.
*/
bool terminalSizeHint() { return _terminalSizeHint; }
/**
* Sets whether the terminal size display is shown briefly
* after the widget is first shown.
*
* See setTerminalSizeHint() , isTerminalSizeHint()
*/
void setTerminalSizeStartup(bool on) { _terminalSizeStartup=on; }
/**
* Sets the status of the BiDi rendering inside the terminal display.
* Defaults to disabled.
*/
void setBidiEnabled(bool set) { _bidiEnabled=set; }
/**
* Returns the status of the BiDi rendering in this widget.
*/
bool isBidiEnabled() { return _bidiEnabled; }
/**
* Sets the terminal screen section which is displayed in this widget.
* When updateImage() is called, the display fetches the latest character image from the
* the associated terminal screen window.
*
* In terms of the model-view paradigm, the ScreenWindow is the model which is rendered
* by the TerminalDisplay.
*/
void setScreenWindow( ScreenWindow* window );
/** Returns the terminal screen section which is displayed in this widget. See setScreenWindow() */
ScreenWindow* screenWindow() const;
static bool HAVE_TRANSPARENCY;
void setMotionAfterPasting(MotionAfterPasting action);
int motionAfterPasting();
void setConfirmMultilinePaste(bool confirmMultilinePaste);
void setTrimPastedTrailingNewlines(bool trimPastedTrailingNewlines);
// maps a point on the widget to the position ( ie. line and column )
// of the character at that point.
void getCharacterPosition(const QPoint& widgetPoint,int& line,int& column) const;
void disableBracketedPasteMode(bool disable) { _disabledBracketedPasteMode = disable; }
bool bracketedPasteModeIsDisabled() const { return _disabledBracketedPasteMode; }
public slots:
/**
* Causes the terminal display to fetch the latest character image from the associated
* terminal screen ( see setScreenWindow() ) and redraw the display.
*/
void updateImage();
/** Essentially calles processFilters().
*/
void updateFilters();
/**
* Causes the terminal display to fetch the latest line status flags from the
* associated terminal screen ( see setScreenWindow() ).
*/
void updateLineProperties();
/** Copies the selected text to the clipboard. */
void copyClipboard();
/**
* Pastes the content of the clipboard into the
* display.
*/
void pasteClipboard();
/**
* Pastes the content of the selection into the
* display.
*/
void pasteSelection();
/**
* Changes whether the flow control warning box should be shown when the flow control
* stop key (Ctrl+S) are pressed.
*/
void setFlowControlWarningEnabled(bool enabled);
/**
* Returns true if the flow control warning box is enabled.
* See outputSuspended() and setFlowControlWarningEnabled()
*/
bool flowControlWarningEnabled() const
{ return _flowControlWarningEnabled; }
/**
* Causes the widget to display or hide a message informing the user that terminal
* output has been suspended (by using the flow control key combination Ctrl+S)
*
* @param suspended True if terminal output has been suspended and the warning message should
* be shown or false to indicate that terminal output has been resumed and that
* the warning message should disappear.
*/
void outputSuspended(bool suspended);
/**
* Sets whether the program whoose output is being displayed in the view
* is interested in mouse events.
*
* If this is set to true, mouse signals will be emitted by the view when the user clicks, drags
* or otherwise moves the mouse inside the view.
* The user interaction needed to create selections will also change, and the user will be required
* to hold down the shift key to create a selection or perform other mouse activities inside the
* view area - since the program running in the terminal is being allowed to handle normal mouse
* events itself.
*
* @param usesMouse Set to true if the program running in the terminal is interested in mouse events
* or false otherwise.
*/
void setUsesMouse(bool usesMouse);
/** See setUsesMouse() */
bool usesMouse() const;
void setBracketedPasteMode(bool bracketedPasteMode);
bool bracketedPasteMode() const;
/**
* Shows a notification that a bell event has occurred in the terminal.
* TODO: More documentation here
*/
void bell(const QString& message);
/**
* Sets the background of the display to the specified color.
* @see setColorTable(), setForegroundColor()
*/
void setBackgroundColor(const QColor& color);
/**
* Sets the text of the display to the specified color.
* @see setColorTable(), setBackgroundColor()
*/
void setForegroundColor(const QColor& color);
void selectionChanged();
signals:
/**
* Emitted when the user presses a key whilst the terminal widget has focus.
*/
void keyPressedSignal(QKeyEvent *e, bool fromPaste);
/**
* A mouse event occurred.
* @param button The mouse button (0 for left button, 1 for middle button, 2 for right button, 3 for release)
* @param column The character column where the event occurred
* @param line The character row where the event occurred
* @param eventType The type of event. 0 for a mouse press / release or 1 for mouse motion
*/
void mouseSignal(int button, int column, int line, int eventType);
void changedFontMetricSignal(int height, int width);
void changedContentSizeSignal(int height, int width);
/**
* Emitted when the user right clicks on the display, or right-clicks with the Shift
* key held down if usesMouse() is true.
*
* This can be used to display a context menu.
*/
void configureRequest(const QPoint& position);
/**
* When a shortcut which is also a valid terminal key sequence is pressed while
* the terminal widget has focus, this signal is emitted to allow the host to decide
* whether the shortcut should be overridden.
* When the shortcut is overridden, the key sequence will be sent to the terminal emulation instead
* and the action associated with the shortcut will not be triggered.
*
* @p override is set to false by default and the shortcut will be triggered as normal.
*/
void overrideShortcutCheck(QKeyEvent* keyEvent,bool& override);
void isBusySelecting(bool);
void sendStringToEmu(const char*);
// qtermwidget signals
void copyAvailable(bool);
void termGetFocus();
void termLostFocus();
void notifyBell(const QString&);
void usesMouseChanged();
protected:
bool event( QEvent * ) override;
void paintEvent( QPaintEvent * ) override;
void showEvent(QShowEvent*) override;
void hideEvent(QHideEvent*) override;
void resizeEvent(QResizeEvent*) override;
virtual void fontChange(const QFont &font);
void focusInEvent(QFocusEvent* event) override;
void focusOutEvent(QFocusEvent* event) override;
void keyPressEvent(QKeyEvent* event) override;
void mouseDoubleClickEvent(QMouseEvent* ev) override;
void mousePressEvent( QMouseEvent* ) override;
void mouseReleaseEvent( QMouseEvent* ) override;
void mouseMoveEvent( QMouseEvent* ) override;
virtual void extendSelection( const QPoint& pos );
void wheelEvent( QWheelEvent* ) override;
bool focusNextPrevChild( bool next ) override;
// drag and drop
void dragEnterEvent(QDragEnterEvent* event) override;
void dropEvent(QDropEvent* event) override;
void doDrag();
enum DragState { diNone, diPending, diDragging };
struct _dragInfo {
DragState state;
QPoint start;
QDrag *dragObject;
} dragInfo;
// classifies the 'ch' into one of three categories
// and returns a character to indicate which category it is in
//
// - A space (returns ' ')
// - Part of a word (returns 'a')
// - Other characters (returns the input character)
QChar charClass(QChar ch) const;
void clearImage();
void mouseTripleClickEvent(QMouseEvent* ev);
// reimplemented
void inputMethodEvent ( QInputMethodEvent* event ) override;
QVariant inputMethodQuery( Qt::InputMethodQuery query ) const override;
protected slots:
void scrollBarPositionChanged(int value);
void blinkEvent();
void blinkCursorEvent();
//Renables bell noises and visuals. Used to disable further bells for a short period of time
//after emitting the first in a sequence of bell events.
void enableBell();
private slots:
void swapColorTable();
void tripleClickTimeout(); // resets possibleTripleClick
private:
// -- Drawing helpers --
// determine the width of this text
int textWidth(int startColumn, int length, int line) const;
// determine the area that encloses this series of characters
QRect calculateTextArea(int topLeftX, int topLeftY, int startColumn, int line, int length);
// divides the part of the display specified by 'rect' into
// fragments according to their colors and styles and calls
// drawTextFragment() to draw the fragments
void drawContents(QPainter &paint, const QRect &rect);
// draws a section of text, all the text in this section
// has a common color and style
void drawTextFragment(QPainter& painter, const QRect& rect,
const std::wstring& text, const Character* style);
// draws the background for a text fragment
// if useOpacitySetting is true then the color's alpha value will be set to
// the display's transparency (set with setOpacity()), otherwise the background
// will be drawn fully opaque
void drawBackground(QPainter& painter, const QRect& rect, const QColor& color,
bool useOpacitySetting);
// draws the cursor character
void drawCursor(QPainter& painter, const QRect& rect , const QColor& foregroundColor,
const QColor& backgroundColor , bool& invertColors);
// draws the characters or line graphics in a text fragment
void drawCharacters(QPainter& painter, const QRect& rect, const std::wstring& text,
const Character* style, bool invertCharacterColor);
// draws a string of line graphics
void drawLineCharString(QPainter& painter, int x, int y,
const std::wstring& str, const Character* attributes);
// draws the preedit string for input methods
void drawInputMethodPreeditString(QPainter& painter , const QRect& rect);
// --
// maps an area in the character image to an area on the widget
QRect imageToWidget(const QRect& imageArea) const;
// the area where the preedit string for input methods will be draw
QRect preeditRect() const;
// shows a notification window in the middle of the widget indicating the terminal's
// current size in columns and lines
void showResizeNotification();
// scrolls the image by a number of lines.
// 'lines' may be positive ( to scroll the image down )
// or negative ( to scroll the image up )
// 'region' is the part of the image to scroll - currently only
// the top, bottom and height of 'region' are taken into account,
// the left and right are ignored.
void scrollImage(int lines , const QRect& region);
void calcGeometry();
void propagateSize();
void updateImageSize();
void makeImage();
void paintFilters(QPainter& painter);
void calDrawTextAdditionHeight(QPainter& painter);
// returns a region covering all of the areas of the widget which contain
// a hotspot
QRegion hotSpotRegion() const;
// returns the position of the cursor in columns and lines
QPoint cursorPosition() const;
// redraws the cursor
void updateCursor();
bool handleShortcutOverrideEvent(QKeyEvent* event);
bool isLineChar(wchar_t c) const;
bool isLineCharString(const std::wstring& string) const;
// the window onto the terminal screen which this display
// is currently showing.
QPointer<ScreenWindow> _screenWindow;
bool _allowBell;
QGridLayout* _gridLayout;
bool _fixedFont; // has fixed pitch
int _fontHeight; // height
int _fontWidth; // width
int _fontAscent; // ascend
bool _boldIntense; // Whether intense colors should be rendered with bold font
int _drawTextAdditionHeight; // additional height to prevent font trancation
bool _drawTextTestFlag; // indicate it is a testing or not
int _leftMargin; // offset
int _topMargin; // offset
int _lines; // the number of lines that can be displayed in the widget
int _columns; // the number of columns that can be displayed in the widget
int _usedLines; // the number of lines that are actually being used, this will be less
// than 'lines' if the character image provided with setImage() is smaller
// than the maximum image size which can be displayed
int _usedColumns; // the number of columns that are actually being used, this will be less
// than 'columns' if the character image provided with setImage() is smaller
// than the maximum image size which can be displayed
int _contentHeight;
int _contentWidth;
Character* _image; // [lines][columns]
// only the area [usedLines][usedColumns] in the image contains valid data
int _imageSize;
QVector<LineProperty> _lineProperties;
ColorEntry _colorTable[TABLE_COLORS];
uint _randomSeed;
bool _resizing;
bool _terminalSizeHint;
bool _terminalSizeStartup;
bool _bidiEnabled;
bool _mouseMarks;
bool _bracketedPasteMode;
bool _disabledBracketedPasteMode;
QPoint _iPntSel; // initial selection point
QPoint _pntSel; // current selection point
QPoint _tripleSelBegin; // help avoid flicker
int _actSel; // selection state
bool _wordSelectionMode;
bool _lineSelectionMode;
bool _preserveLineBreaks;
bool _columnSelectionMode;
QClipboard* _clipboard;
QScrollBar* _scrollBar;
QTermWidget::ScrollBarPosition _scrollbarLocation;
QString _wordCharacters;
int _bellMode;
bool _blinking; // hide text in paintEvent
bool _hasBlinker; // has characters to blink
bool _cursorBlinking; // hide cursor in paintEvent
bool _hasBlinkingCursor; // has blinking cursor enabled
bool _allowBlinkingText; // allow text to blink
bool _ctrlDrag; // require Ctrl key for drag
TripleClickMode _tripleClickMode;
bool _isFixedSize; //Columns / lines are locked.
QTimer* _blinkTimer; // active when hasBlinker
QTimer* _blinkCursorTimer; // active when hasBlinkingCursor
//QMenu* _drop;
QString _dropText;
int _dndFileCount;
bool _possibleTripleClick; // is set in mouseDoubleClickEvent and deleted
// after QApplication::doubleClickInterval() delay
QLabel* _resizeWidget;
QTimer* _resizeTimer;
bool _flowControlWarningEnabled;
//widgets related to the warning message that appears when the user presses Ctrl+S to suspend
//terminal output - informing them what has happened and how to resume output
QLabel* _outputSuspendedLabel;
uint _lineSpacing;
bool _colorsInverted; // true during visual bell
QSize _size;
qreal _opacity;
QPixmap _backgroundImage;
BackgroundMode _backgroundMode;
// list of filters currently applied to the display. used for links and
// search highlight
TerminalImageFilterChain* _filterChain;
QRegion _mouseOverHotspotArea;
QTermWidget::KeyboardCursorShape _cursorShape;
// custom cursor color. if this is invalid then the foreground
// color of the character under the cursor is used
QColor _cursorColor;
MotionAfterPasting mMotionAfterPasting;
bool _confirmMultilinePaste;
bool _trimPastedTrailingNewlines;
struct InputMethodData
{
std::wstring preeditString;
QRect previousPreeditRect;
};
InputMethodData _inputMethodData;
static bool _antialiasText; // do we antialias or not
//the delay in milliseconds between redrawing blinking text
static const int TEXT_BLINK_DELAY = 500;
int _leftBaseMargin;
int _topBaseMargin;
bool _drawLineChars;
public:
static void setTransparencyEnabled(bool enable)
{
HAVE_TRANSPARENCY = enable;
}
};
class AutoScrollHandler : public QObject
{
Q_OBJECT
public:
AutoScrollHandler(QWidget* parent);
protected:
void timerEvent(QTimerEvent* event) override;
bool eventFilter(QObject* watched,QEvent* event) override;
private:
QWidget* widget() const { return static_cast<QWidget*>(parent()); }
int _timerId;
};
}
#endif // TERMINALDISPLAY_H
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