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310 lines
8.7 KiB
310 lines
8.7 KiB
/*
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* kis_tool_gradient.cc - part of Chalk
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*
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* Copyright (c) 2000 John Califf
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* Copyright (c) 2002 Patrick Julien <freak@codepimps.org>
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* Copyright (c) 2003 Boudewijn Rempt <boud@valdyas.org>
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* Copyright (c) 2004 Adrian Page <adrian@pagenet.plus.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <tqpainter.h>
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#include <tqlabel.h>
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#include <tqlayout.h>
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#include <tqcheckbox.h>
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#include <kdebug.h>
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#include <kaction.h>
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#include <kcommand.h>
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#include <klocale.h>
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#include <knuminput.h>
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#include "kis_button_press_event.h"
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#include "kis_button_release_event.h"
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#include "kis_canvas_subject.h"
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#include "kis_cmb_composite.h"
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#include "kis_cursor.h"
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#include "kis_double_widget.h"
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#include "kis_gradient_painter.h"
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#include "kis_move_event.h"
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#include "kis_painter.h"
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#include "kis_progress_display_interface.h"
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#include "kis_tool_gradient.h"
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#include "kis_undo_adapter.h"
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#include "kis_canvas.h"
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#include "kis_canvas_painter.h"
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KisToolGradient::KisToolGradient()
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: super(i18n("Gradient")),
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m_dragging( false )
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{
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setName("tool_gradient");
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setCursor(KisCursor::load("tool_gradient_cursor.png", 6, 6));
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m_startPos = KisPoint(0, 0);
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m_endPos = KisPoint(0, 0);
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m_reverse = false;
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m_shape = KisGradientPainter::GradientShapeLinear;
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m_repeat = KisGradientPainter::GradientRepeatNone;
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m_antiAliasThreshold = 0.2;
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}
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KisToolGradient::~KisToolGradient()
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{
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}
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void KisToolGradient::update(KisCanvasSubject *subject)
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{
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m_subject = subject;
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super::update(m_subject);
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}
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void KisToolGradient::paint(KisCanvasPainter& gc)
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{
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if (m_dragging)
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paintLine(gc);
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}
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void KisToolGradient::paint(KisCanvasPainter& gc, const TQRect&)
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{
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if (m_dragging)
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paintLine(gc);
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}
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void KisToolGradient::buttonPress(KisButtonPressEvent *e)
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{
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if (!m_subject || !m_subject->currentImg()) {
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return;
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}
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if (e->button() == Qt::LeftButton) {
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m_dragging = true;
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m_startPos = e->pos();
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m_endPos = e->pos();
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}
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}
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void KisToolGradient::move(KisMoveEvent *e)
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{
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if (m_dragging) {
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if (m_startPos != m_endPos) {
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paintLine();
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}
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if ((e->state() & TQt::ShiftButton) == TQt::ShiftButton) {
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m_endPos = straightLine(e->pos());
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}
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else {
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m_endPos = e->pos();
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}
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paintLine();
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}
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}
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void KisToolGradient::buttonRelease(KisButtonReleaseEvent *e)
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{
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if (m_dragging && e->button() == Qt::LeftButton) {
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KisCanvasController *controller = m_subject->canvasController();
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KisImageSP img = m_subject->currentImg();
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m_dragging = false;
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if (m_startPos == m_endPos) {
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controller->updateCanvas();
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m_dragging = false;
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return;
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}
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if ((e->state() & TQt::ShiftButton) == TQt::ShiftButton) {
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m_endPos = straightLine(e->pos());
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}
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else {
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m_endPos = e->pos();
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}
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KisPaintDeviceSP device;
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if (img && (device = img->activeDevice())) {
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KisGradientPainter painter(device);
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if (img->undo()) painter.beginTransaction(i18n("Gradient"));
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painter.setPaintColor(m_subject->fgColor());
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painter.setGradient(*(m_subject->currentGradient()));
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painter.setOpacity(m_opacity);
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painter.setCompositeOp(m_compositeOp);
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KisProgressDisplayInterface *progress = m_subject->progressDisplay();
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if (progress) {
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progress->setSubject(&painter, true, true);
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}
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bool painted = painter.paintGradient(m_startPos, m_endPos, m_shape, m_repeat, m_antiAliasThreshold, m_reverse, 0, 0, m_subject->currentImg()->width(), m_subject->currentImg()->height());
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if (painted) {
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// does whole thing at moment
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device->setDirty(painter.dirtyRect());
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notifyModified();
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if (img->undo()) {
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img->undoAdapter()->addCommand(painter.endTransaction());
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}
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}
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/* remove remains of the line drawn while moving */
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if (controller->kiscanvas()) {
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controller->kiscanvas()->update();
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}
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}
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}
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}
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KisPoint KisToolGradient::straightLine(KisPoint point)
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{
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KisPoint comparison = point - m_startPos;
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KisPoint result;
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if ( fabs(comparison.x()) > fabs(comparison.y())) {
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result.setX(point.x());
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result.setY(m_startPos.y());
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} else {
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result.setX( m_startPos.x() );
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result.setY( point.y() );
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}
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return result;
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}
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void KisToolGradient::paintLine()
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{
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if (m_subject) {
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KisCanvasController *controller = m_subject->canvasController();
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KisCanvas *canvas = controller->kiscanvas();
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KisCanvasPainter gc(canvas);
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paintLine(gc);
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}
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}
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void KisToolGradient::paintLine(KisCanvasPainter& gc)
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{
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if (m_subject) {
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KisCanvasController *controller = m_subject->canvasController();
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KisPoint start = controller->windowToView(m_startPos);
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KisPoint end = controller->windowToView(m_endPos);
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RasterOp op = gc.rasterOp();
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TQPen old = gc.pen();
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TQPen pen(TQt::SolidLine);
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gc.setRasterOp(TQt::NotROP);
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gc.setPen(pen);
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gc.drawLine(start.floorTQPoint(), end.floorTQPoint());
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gc.setRasterOp(op);
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gc.setPen(old);
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}
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}
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TQWidget* KisToolGradient::createOptionWidget(TQWidget* parent)
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{
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TQWidget *widget = super::createOptionWidget(parent);
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Q_CHECK_PTR(widget);
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m_lbShape = new TQLabel(i18n("Shape:"), widget);
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m_lbRepeat = new TQLabel(i18n("Repeat:"), widget);
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m_ckReverse = new TQCheckBox(i18n("Reverse"), widget, "reverse_check");
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connect(m_ckReverse, TQT_SIGNAL(toggled(bool)), this, TQT_SLOT(slotSetReverse(bool)));
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m_cmbShape = new TQComboBox(false, widget, "shape_combo");
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connect(m_cmbShape, TQT_SIGNAL(activated(int)), this, TQT_SLOT(slotSetShape(int)));
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m_cmbShape->insertItem(i18n("Linear"));
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m_cmbShape->insertItem(i18n("Bi-Linear"));
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m_cmbShape->insertItem(i18n("Radial"));
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m_cmbShape->insertItem(i18n("Square"));
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m_cmbShape->insertItem(i18n("Conical"));
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m_cmbShape->insertItem(i18n("Conical Symmetric"));
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m_cmbRepeat = new TQComboBox(false, widget, "repeat_combo");
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connect(m_cmbRepeat, TQT_SIGNAL(activated(int)), this, TQT_SLOT(slotSetRepeat(int)));
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m_cmbRepeat->insertItem(i18n("None"));
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m_cmbRepeat->insertItem(i18n("Forwards"));
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m_cmbRepeat->insertItem(i18n("Alternating"));
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addOptionWidgetOption(m_cmbShape, m_lbShape);
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addOptionWidgetOption(m_cmbRepeat, m_lbRepeat);
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addOptionWidgetOption(m_ckReverse);
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m_lbAntiAliasThreshold = new TQLabel(i18n("Anti-alias threshold:"), widget);
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m_slAntiAliasThreshold = new KDoubleNumInput(widget, "threshold_slider");
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m_slAntiAliasThreshold->setRange( 0, 1);
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m_slAntiAliasThreshold->setValue(m_antiAliasThreshold);
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connect(m_slAntiAliasThreshold, TQT_SIGNAL(valueChanged(double)), this, TQT_SLOT(slotSetAntiAliasThreshold(double)));
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addOptionWidgetOption(m_slAntiAliasThreshold, m_lbAntiAliasThreshold);
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return widget;
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}
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void KisToolGradient::slotSetShape(int shape)
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{
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m_shape = static_cast<KisGradientPainter::enumGradientShape>(shape);
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}
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void KisToolGradient::slotSetRepeat(int repeat)
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{
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m_repeat = static_cast<KisGradientPainter::enumGradientRepeat>(repeat);
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}
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void KisToolGradient::slotSetReverse(bool state)
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{
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m_reverse = state;
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}
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void KisToolGradient::slotSetAntiAliasThreshold(double value)
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{
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m_antiAliasThreshold = value;
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}
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void KisToolGradient::setup(KActionCollection *collection)
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{
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m_action = static_cast<KRadioAction *>(collection->action(name()));
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if (m_action == 0) {
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m_action = new KRadioAction(i18n("&Gradient"),
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"tool_gradient", TQt::Key_G, this,
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TQT_SLOT(activate()), collection,
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name());
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m_action->setToolTip(i18n("Draw a gradient"));
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m_action->setExclusiveGroup("tools");
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m_ownAction = true;
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}
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}
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#include "kis_tool_gradient.moc"
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