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tdegraphics/kolourpaint/tools/kptoolrectangle.cpp

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/*
Copyright (c) 2003,2004,2005 Clarence Dang <dang@kde.org>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#define DEBUG_KP_TOOL_RECTANGLE 0
#include <tqbitmap.h>
#include <tqcursor.h>
#include <tqevent.h>
#include <tqpainter.h>
#include <kdebug.h>
#include <klocale.h>
#include <kpcolor.h>
#include <kpcommandhistory.h>
#include <kpdefs.h>
#include <kpdocument.h>
#include <kpmainwindow.h>
#include <kppixmapfx.h>
#include <kptemppixmap.h>
#include <kptoolrectangle.h>
#include <kptooltoolbar.h>
#include <kptoolwidgetfillstyle.h>
#include <kptoolwidgetlinewidth.h>
#include <kpview.h>
#include <kpviewmanager.h>
static TQPixmap pixmap (const kpToolRectangle::Mode mode,
kpDocument *document, const TQRect &rect,
const TQPoint &startPoint, const TQPoint &endPoint,
const TQPen &pen, const TQPen &maskPen,
const TQBrush &brush, const TQBrush &maskBrush)
{
TQPixmap pixmap = document->getPixmapAt (rect);
TQBitmap maskBitmap;
TQPainter painter, maskPainter;
#if DEBUG_KP_TOOL_RECTANGLE && 1
kdDebug () << "pixmap: rect=" << rect
<< " startPoint=" << startPoint
<< " endPoint=" << endPoint
<< endl;
kdDebug () << "\tm: p=" << (maskPen.style () != Qt::NoPen)
<< " b=" << (maskBrush.style () != Qt::NoBrush)
<< " o: p=" << (pen.style () != Qt::NoPen)
<< " b=" << (brush.style () != Qt::NoBrush)
<< endl;
kdDebug () << "\tmaskPen.color()=" << (int *) maskPen.color ().rgb ()
<< " transparent=" << (int *) Qt::color0.rgb ()/*transparent*/
<< endl;
#endif
if (pixmap.mask () ||
(maskPen.style () != Qt::NoPen &&
maskPen.color () == Qt::color0/*transparent*/) ||
(maskBrush.style () != Qt::NoBrush &&
maskBrush.color () == Qt::color0/*transparent*/))
{
maskBitmap = kpPixmapFX::getNonNullMask (pixmap);
maskPainter.begin (&maskBitmap);
maskPainter.setPen (maskPen);
maskPainter.setBrush (maskBrush);
}
if (pen.style () != Qt::NoPen ||
brush.style () != Qt::NoBrush)
{
painter.begin (&pixmap);
painter.setPen (pen);
painter.setBrush (brush);
}
#define PAINTER_CALL(cmd) \
{ \
if (painter.isActive ()) \
painter . cmd ; \
\
if (maskPainter.isActive ()) \
maskPainter . cmd ; \
}
if (startPoint != endPoint)
{
#if DEBUG_KP_TOOL_RECTANGLE && 1
kdDebug () << "\tdraw shape" << endl;
#endif
// TODO: Rectangle of pen width 1, height 1 and width X is rendered
// as width X - 1.
switch (mode)
{
case kpToolRectangle::Rectangle:
PAINTER_CALL (drawRect (TQRect (startPoint - rect.topLeft (), endPoint - rect.topLeft ())));
break;
case kpToolRectangle::RoundedRectangle:
PAINTER_CALL (drawRoundRect (TQRect (startPoint - rect.topLeft (), endPoint - rect.topLeft ())));
break;
case kpToolRectangle::Ellipse:
PAINTER_CALL (drawEllipse (TQRect (startPoint - rect.topLeft (), endPoint - rect.topLeft ())));
break;
default:
kdError () << "kptoolrectangle.cpp::pixmap() passed unknown mode: " << int (mode) << endl;
break;
}
}
else
{
#if DEBUG_KP_TOOL_RECTANGLE && 1
kdDebug () << "\tstartPoint == endPoint" << endl;
#endif
// SYNC: Work around Qt bug: can't draw 1x1 rectangle
// Not strictly correct for border width > 1
// but better than not drawing at all
PAINTER_CALL (drawPoint (startPoint - rect.topLeft ()));
}
#undef PAINTER_CALL
if (painter.isActive ())
painter.end ();
if (maskPainter.isActive ())
maskPainter.end ();
if (!maskBitmap.isNull ())
pixmap.setMask (maskBitmap);
return pixmap;
}
/*
* kpToolRectangle
*/
kpToolRectangle::kpToolRectangle (Mode mode,
const TQString &text,
const TQString &description,
int key,
kpMainWindow *mainWindow,
const char *name)
: kpTool (text, description, key, mainWindow, name),
m_mode (mode),
m_toolWidgetLineWidth (0),
m_toolWidgetFillStyle (0)
{
}
kpToolRectangle::kpToolRectangle (kpMainWindow *mainWindow)
: kpTool (i18n ("Rectangle"), i18n ("Draws rectangles and squares"),
Qt::Key_R,
mainWindow, "tool_rectangle"),
m_mode (Rectangle),
m_toolWidgetLineWidth (0),
m_toolWidgetFillStyle (0)
{
}
kpToolRectangle::~kpToolRectangle ()
{
}
void kpToolRectangle::setMode (Mode mode)
{
m_mode = mode;
}
// private
void kpToolRectangle::updatePens ()
{
for (int i = 0; i < 2; i++)
updatePen (i);
}
// private
void kpToolRectangle::updateBrushes ()
{
for (int i = 0; i < 2; i++)
updateBrush (i);
}
// virtual private slot
void kpToolRectangle::slotForegroundColorChanged (const kpColor &)
{
#if DEBUG_KP_TOOL_RECTANGLE
kdDebug () << "kpToolRectangle::slotForegroundColorChanged()" << endl;
#endif
updatePen (0);
updateBrush (0); // brush may be in foreground color
updateBrush (1);
}
// virtual private slot
void kpToolRectangle::slotBackgroundColorChanged (const kpColor &)
{
#if DEBUG_KP_TOOL_RECTANGLE
kdDebug () << "kpToolRectangle::slotBackgroundColorChanged()" << endl;
kdDebug () << "\tm_toolWidgetFillStyle=" << m_toolWidgetFillStyle << endl;
#endif
updatePen (1);
updateBrush (0);
updateBrush (1); // brush may be in background color
}
// private
void kpToolRectangle::updatePen (int mouseButton)
{
TQColor maskPenColor = color (mouseButton).maskColor ();
if (!m_toolWidgetLineWidth)
{
if (color (mouseButton).isOpaque ())
m_pen [mouseButton] = TQPen (color (mouseButton).toQColor ());
else
m_pen [mouseButton] = Qt::NoPen;
m_maskPen [mouseButton] = TQPen (maskPenColor);
}
else
{
if (color (mouseButton).isOpaque ())
{
m_pen [mouseButton] = TQPen (color (mouseButton).toQColor (),
m_toolWidgetLineWidth->lineWidth (),
Qt::SolidLine);
}
else
m_pen [mouseButton] = Qt::NoPen;
m_maskPen [mouseButton] = TQPen (maskPenColor,
m_toolWidgetLineWidth->lineWidth (),
Qt::SolidLine);
}
}
void kpToolRectangle::updateBrush (int mouseButton)
{
#if DEBUG_KP_TOOL_RECTANGLE
kdDebug () << "kpToolRectangle::brush () mouseButton=" << mouseButton
<< " m_toolWidgetFillStyle=" << m_toolWidgetFillStyle
<< endl;
#endif
if (m_toolWidgetFillStyle)
{
m_brush [mouseButton] = m_toolWidgetFillStyle->brush (
color (mouseButton)/*foreground colour*/,
color (1 - mouseButton)/*background colour*/);
m_maskBrush [mouseButton] = m_toolWidgetFillStyle->maskBrush (
color (mouseButton)/*foreground colour*/,
color (1 - mouseButton)/*background colour*/);
}
else
{
m_brush [mouseButton] = Qt::NoBrush;
m_maskBrush [mouseButton] = Qt::NoBrush;
}
}
// private slot virtual
void kpToolRectangle::slotLineWidthChanged ()
{
updatePens ();
if (hasBegunDraw ())
updateShape ();
}
// private slot virtual
void kpToolRectangle::slotFillStyleChanged ()
{
updateBrushes ();
if (hasBegunDraw ())
updateShape ();
}
// private
TQString kpToolRectangle::haventBegunDrawUserMessage () const
{
return i18n ("Drag to draw.");
}
// virtual
void kpToolRectangle::begin ()
{
#if DEBUG_KP_TOOL_RECTANGLE
kdDebug () << "kpToolRectangle::begin ()" << endl;
#endif
kpToolToolBar *tb = toolToolBar ();
#if DEBUG_KP_TOOL_RECTANGLE
kdDebug () << "\ttoolToolBar=" << tb << endl;
#endif
if (tb)
{
m_toolWidgetLineWidth = tb->toolWidgetLineWidth ();
connect (m_toolWidgetLineWidth, TQT_SIGNAL (lineWidthChanged (int)),
this, TQT_SLOT (slotLineWidthChanged ()));
m_toolWidgetLineWidth->show ();
updatePens ();
m_toolWidgetFillStyle = tb->toolWidgetFillStyle ();
connect (m_toolWidgetFillStyle, TQT_SIGNAL (fillStyleChanged (kpToolWidgetFillStyle::FillStyle)),
this, TQT_SLOT (slotFillStyleChanged ()));
m_toolWidgetFillStyle->show ();
updateBrushes ();
}
#if DEBUG_KP_TOOL_RECTANGLE
kdDebug () << "\t\tm_toolWidgetFillStyle=" << m_toolWidgetFillStyle << endl;
#endif
viewManager ()->setCursor (TQCursor (CrossCursor));
setUserMessage (haventBegunDrawUserMessage ());
}
// virtual
void kpToolRectangle::end ()
{
#if DEBUG_KP_TOOL_RECTANGLE
kdDebug () << "kpToolRectangle::end ()" << endl;
#endif
if (m_toolWidgetLineWidth)
{
disconnect (m_toolWidgetLineWidth, TQT_SIGNAL (lineWidthChanged (int)),
this, TQT_SLOT (slotLineWidthChanged ()));
m_toolWidgetLineWidth = 0;
}
if (m_toolWidgetFillStyle)
{
disconnect (m_toolWidgetFillStyle, TQT_SIGNAL (fillStyleChanged (kpToolWidgetFillStyle::FillStyle)),
this, TQT_SLOT (slotFillStyleChanged ()));
m_toolWidgetFillStyle = 0;
}
viewManager ()->unsetCursor ();
}
void kpToolRectangle::applyModifiers ()
{
TQRect rect = TQRect (m_startPoint, m_currentPoint).normalize ();
#if DEBUG_KP_TOOL_RECTANGLE
kdDebug () << "kpToolRectangle::applyModifiers(" << rect
<< ") shift=" << m_shiftPressed
<< " ctrl=" << m_controlPressed
<< endl;
#endif
// user wants to m_startPoint == centre
if (m_controlPressed)
{
int xdiff = kAbs (m_startPoint.x () - m_currentPoint.x ());
int ydiff = kAbs (m_startPoint.y () - m_currentPoint.y ());
rect = TQRect (m_startPoint.x () - xdiff, m_startPoint.y () - ydiff,
xdiff * 2 + 1, ydiff * 2 + 1);
}
// user wants major axis == minor axis:
// rectangle --> square
// rounded rectangle --> rounded square
// ellipse --> circle
if (m_shiftPressed)
{
if (!m_controlPressed)
{
if (rect.width () < rect.height ())
{
if (m_startPoint.y () == rect.y ())
rect.setHeight (rect.width ());
else
rect.setY (rect.bottom () - rect.width () + 1);
}
else
{
if (m_startPoint.x () == rect.x ())
rect.setWidth (rect.height ());
else
rect.setX (rect.right () - rect.height () + 1);
}
}
// have to maintain the centre
else
{
if (rect.width () < rect.height ())
{
TQPoint center = rect.center ();
rect.setHeight (rect.width ());
rect.moveCenter (center);
}
else
{
TQPoint center = rect.center ();
rect.setWidth (rect.height ());
rect.moveCenter (center);
}
}
}
m_toolRectangleStartPoint = rect.topLeft ();
m_toolRectangleEndPoint = rect.bottomRight ();
m_toolRectangleRectWithoutLineWidth = rect;
m_toolRectangleRect = kpTool::neededRect (rect, QMAX (m_pen [m_mouseButton].width (),
m_maskPen [m_mouseButton].width ()));
}
void kpToolRectangle::beginDraw ()
{
setUserMessage (cancelUserMessage ());
}
void kpToolRectangle::updateShape ()
{
viewManager ()->setFastUpdates ();
TQPixmap newPixmap = pixmap (m_mode, document (), m_toolRectangleRect,
m_toolRectangleStartPoint, m_toolRectangleEndPoint,
m_pen [m_mouseButton], m_maskPen [m_mouseButton],
m_brush [m_mouseButton], m_maskBrush [m_mouseButton]);
kpTempPixmap newTempPixmap (false/*always display*/,
kpTempPixmap::SetPixmap/*render mode*/,
m_toolRectangleRect.topLeft (),
newPixmap);
viewManager ()->setTempPixmap (newTempPixmap);
viewManager ()->restoreFastUpdates ();
}
void kpToolRectangle::draw (const TQPoint &, const TQPoint &, const TQRect &)
{
applyModifiers ();
updateShape ();
// Recover the start and end points from the transformed & normalized m_toolRectangleRect
// S. or S or SC or S == C
// .C C
if (m_currentPoint.x () >= m_startPoint.x () &&
m_currentPoint.y () >= m_startPoint.y ())
{
setUserShapePoints (m_toolRectangleRectWithoutLineWidth.topLeft (),
m_toolRectangleRectWithoutLineWidth.bottomRight ());
}
// .C or C
// S. S
else if (m_currentPoint.x () >= m_startPoint.x () &&
m_currentPoint.y () < m_startPoint.y ())
{
setUserShapePoints (m_toolRectangleRectWithoutLineWidth.bottomLeft (),
m_toolRectangleRectWithoutLineWidth.topRight ());
}
// .S or CS
// C.
else if (m_currentPoint.x () < m_startPoint.x () &&
m_currentPoint.y () >= m_startPoint.y ())
{
setUserShapePoints (m_toolRectangleRectWithoutLineWidth.topRight (),
m_toolRectangleRectWithoutLineWidth.bottomLeft ());
}
// C.
// .S
else
{
setUserShapePoints (m_toolRectangleRectWithoutLineWidth.bottomRight (),
m_toolRectangleRectWithoutLineWidth.topLeft ());
}
}
void kpToolRectangle::cancelShape ()
{
#if 0
endDraw (m_currentPoint, TQRect (m_startPoint, m_currentPoint).normalize ());
mainWindow ()->commandHistory ()->undo ();
#else
viewManager ()->invalidateTempPixmap ();
#endif
setUserMessage (i18n ("Let go of all the mouse buttons."));
}
void kpToolRectangle::releasedAllButtons ()
{
setUserMessage (haventBegunDrawUserMessage ());
}
void kpToolRectangle::endDraw (const TQPoint &, const TQRect &)
{
applyModifiers ();
// TODO: flicker
viewManager ()->invalidateTempPixmap ();
mainWindow ()->commandHistory ()->addCommand (
new kpToolRectangleCommand
(m_mode,
m_pen [m_mouseButton], m_maskPen [m_mouseButton],
m_brush [m_mouseButton], m_maskBrush [m_mouseButton],
m_toolRectangleRect, m_toolRectangleStartPoint, m_toolRectangleEndPoint,
mainWindow ()));
setUserMessage (haventBegunDrawUserMessage ());
}
/*
* kpToolRectangleCommand
*/
kpToolRectangleCommand::kpToolRectangleCommand (kpToolRectangle::Mode mode,
const TQPen &pen, const TQPen &maskPen,
const TQBrush &brush, const TQBrush &maskBrush,
const TQRect &rect,
const TQPoint &startPoint, const TQPoint &endPoint,
kpMainWindow *mainWindow)
: kpCommand (mainWindow),
m_mode (mode),
m_pen (pen), m_maskPen (maskPen),
m_brush (brush), m_maskBrush (maskBrush),
m_rect (rect),
m_startPoint (startPoint),
m_endPoint (endPoint),
m_oldPixmapPtr (0)
{
}
kpToolRectangleCommand::~kpToolRectangleCommand ()
{
delete m_oldPixmapPtr;
}
// public virtual [base kpCommand]
TQString kpToolRectangleCommand::name () const
{
switch (m_mode)
{
case kpToolRectangle::Rectangle:
return i18n ("Rectangle");
case kpToolRectangle::RoundedRectangle:
return i18n ("Rounded Rectangle");
case kpToolRectangle::Ellipse:
return i18n ("Ellipse");
default:
kdError () << "kpToolRectangleCommand::name() passed unknown mode: " << int (m_mode) << endl;
return TQString::null;
}
}
// public virtual [base kpCommand]
int kpToolRectangleCommand::size () const
{
return kpPixmapFX::pixmapSize (m_oldPixmapPtr);
}
// public virtual [base kpCommand]
void kpToolRectangleCommand::execute ()
{
kpDocument *doc = document ();
if (!doc)
return;
// store Undo info
if (!m_oldPixmapPtr)
{
// OPT: I can do better with no brush
m_oldPixmapPtr = new TQPixmap ();
*m_oldPixmapPtr = doc->getPixmapAt (m_rect);
}
else
kdError () << "kpToolRectangleCommand::execute() m_oldPixmapPtr not null" << endl;
doc->setPixmapAt (pixmap (m_mode, doc,
m_rect, m_startPoint, m_endPoint,
m_pen, m_maskPen,
m_brush, m_maskBrush),
m_rect.topLeft ());
}
// public virtual [base kpCommand]
void kpToolRectangleCommand::unexecute ()
{
kpDocument *doc = document ();
if (!doc)
return;
if (m_oldPixmapPtr)
{
doc->setPixmapAt (*m_oldPixmapPtr, m_rect.topLeft ());
delete m_oldPixmapPtr;
m_oldPixmapPtr = 0;
}
else
kdError () << "kpToolRectangleCommand::unexecute() m_oldPixmapPtr null" << endl;
}
#include <kptoolrectangle.moc>