diff options
Diffstat (limited to 'chalk/plugins/tools/defaulttools/kis_tool_ellipse.cc')
| -rw-r--r-- | chalk/plugins/tools/defaulttools/kis_tool_ellipse.cc | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/chalk/plugins/tools/defaulttools/kis_tool_ellipse.cc b/chalk/plugins/tools/defaulttools/kis_tool_ellipse.cc new file mode 100644 index 00000000..65593c23 --- /dev/null +++ b/chalk/plugins/tools/defaulttools/kis_tool_ellipse.cc @@ -0,0 +1,186 @@ +/* + * kis_tool_ellipse.cc - part of Krayon + * + * Copyright (c) 2000 John Califf <jcaliff@compuzone.net> + * Copyright (c) 2002 Patrick Julien <freak@codepimps.org> + * Copyright (c) 2004 Boudewijn Rempt <boud@valdyas.org> + * Copyright (c) 2004 Clarence Dang <dang@kde.org> + * + * 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. + */ + +#include <tqpainter.h> + +#include <kaction.h> +#include <kdebug.h> +#include <klocale.h> + +#include "kis_painter.h" +#include "kis_canvas_subject.h" +#include "kis_canvas_controller.h" +#include "kis_tool_ellipse.h" +#include "kis_button_press_event.h" +#include "kis_button_release_event.h" +#include "kis_move_event.h" +#include "kis_paintop_registry.h" +#include "kis_undo_adapter.h" +#include "kis_canvas.h" +#include "kis_canvas_painter.h" +#include "kis_cursor.h" + +KisToolEllipse::KisToolEllipse() + : super(i18n ("Ellipse")), + m_dragging (false), + m_currentImage (0) +{ + setName("tool_ellipse"); + setCursor(KisCursor::load("tool_ellipse_cursor.png", 6, 6)); +} + +KisToolEllipse::~KisToolEllipse() +{ +} + +void KisToolEllipse::update (KisCanvasSubject *subject) +{ + super::update (subject); + if (m_subject) + m_currentImage = m_subject->currentImg (); +} + +void KisToolEllipse::buttonPress(KisButtonPressEvent *event) +{ + if (m_currentImage && event->button() == Qt::LeftButton) { + m_dragging = true; + m_dragStart = m_dragCenter = m_dragEnd = event->pos(); + draw(m_dragStart, m_dragEnd); + } +} + +void KisToolEllipse::move(KisMoveEvent *event) +{ + if (m_dragging) { + // erase old lines on canvas + draw(m_dragStart, m_dragEnd); + // move (alt) or resize ellipse + if (event->state() & TQt::AltButton) { + KisPoint trans = event->pos() - m_dragEnd; + m_dragStart += trans; + m_dragEnd += trans; + } else { + KisPoint diag = event->pos() - (event->state() & TQt::ControlButton + ? m_dragCenter : m_dragStart); + // circle? + if (event->state() & TQt::ShiftButton) { + double size = TQMAX(fabs(diag.x()), fabs(diag.y())); + double w = diag.x() < 0 ? -size : size; + double h = diag.y() < 0 ? -size : size; + diag = KisPoint(w, h); + } + + // resize around center point? + if (event->state() & TQt::ControlButton) { + m_dragStart = m_dragCenter - diag; + m_dragEnd = m_dragCenter + diag; + } else { + m_dragEnd = m_dragStart + diag; + } + } + // draw new lines on canvas + draw(m_dragStart, m_dragEnd); + m_dragCenter = KisPoint((m_dragStart.x() + m_dragEnd.x()) / 2, + (m_dragStart.y() + m_dragEnd.y()) / 2); + } +} + +void KisToolEllipse::buttonRelease(KisButtonReleaseEvent *event) +{ + if (!m_subject || !m_currentImage) + return; + + if (m_dragging && event->button() == Qt::LeftButton) { + // erase old lines on canvas + draw(m_dragStart, m_dragEnd); + m_dragging = false; + + if (m_dragStart == m_dragEnd) + return; + + if (!m_currentImage) + return; + + if (!m_currentImage->activeDevice()) + return; + + KisPaintDeviceSP device = m_currentImage->activeDevice (); + KisPainter painter (device); + if (m_currentImage->undo()) painter.beginTransaction (i18n ("Ellipse")); + + painter.setPaintColor(m_subject->fgColor()); + painter.setBackgroundColor(m_subject->bgColor()); + painter.setFillStyle(fillStyle()); + painter.setBrush(m_subject->currentBrush()); + painter.setPattern(m_subject->currentPattern()); + painter.setOpacity(m_opacity); + painter.setCompositeOp(m_compositeOp); + KisPaintOp * op = KisPaintOpRegistry::instance()->paintOp(m_subject->currentPaintop(), m_subject->currentPaintopSettings(), &painter); + painter.setPaintOp(op); // Painter takes ownership + + painter.paintEllipse(m_dragStart, m_dragEnd, PRESSURE_DEFAULT/*event->pressure()*/, event->xTilt(), event->yTilt()); + device->setDirty( painter.dirtyRect() ); + notifyModified(); + + KisUndoAdapter *adapter = m_currentImage->undoAdapter(); + if (adapter) { + adapter->addCommand(painter.endTransaction()); + } + } +} + +void KisToolEllipse::draw(const KisPoint& start, const KisPoint& end ) +{ + if (!m_subject || !m_currentImage) + return; + + KisCanvasController *controller = m_subject->canvasController (); + KisCanvas *canvas = controller->kiscanvas(); + KisCanvasPainter p (canvas); + + p.setRasterOp (TQt::NotROP); + p.drawEllipse (TQRect (controller->windowToView (start).floorTQPoint(), controller->windowToView (end).floorTQPoint())); + p.end (); +} + +void KisToolEllipse::setup(KActionCollection *collection) +{ + m_action = static_cast<KRadioAction *>(collection->action(name())); + + if (m_action == 0) { + KShortcut shortcut(TQt::Key_Plus); + shortcut.append(KShortcut(TQt::Key_F7)); + m_action = new KRadioAction(i18n("&Ellipse"), + "tool_ellipse", + shortcut, + this, + TQT_SLOT(activate()), + collection, + name()); + m_action->setToolTip(i18n("Draw an ellipse")); + m_action->setExclusiveGroup("tools"); + m_ownAction = true; + } +} + +#include "kis_tool_ellipse.moc" |