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koffice/chalk/plugins/tools/defaulttools/kis_tool_gradient.cc

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/*
* kis_tool_gradient.cc - part of Chalk
*
* Copyright (c) 2000 John Califf
* Copyright (c) 2002 Patrick Julien <freak@codepimps.org>
* Copyright (c) 2003 Boudewijn Rempt <boud@valdyas.org>
* Copyright (c) 2004 Adrian Page <adrian@pagenet.plus.com>
*
* 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 <tqlabel.h>
#include <tqlayout.h>
#include <tqcheckbox.h>
#include <kdebug.h>
#include <tdeaction.h>
#include <kcommand.h>
#include <tdelocale.h>
#include <knuminput.h>
#include "kis_button_press_event.h"
#include "kis_button_release_event.h"
#include "kis_canvas_subject.h"
#include "kis_cmb_composite.h"
#include "kis_cursor.h"
#include "kis_double_widget.h"
#include "kis_gradient_painter.h"
#include "kis_move_event.h"
#include "kis_painter.h"
#include "kis_progress_display_interface.h"
#include "kis_tool_gradient.h"
#include "kis_undo_adapter.h"
#include "kis_canvas.h"
#include "kis_canvas_painter.h"
KisToolGradient::KisToolGradient()
: super(i18n("Gradient")),
m_dragging( false )
{
setName("tool_gradient");
setCursor(KisCursor::load("tool_gradient_cursor.png", 6, 6));
m_startPos = KisPoint(0, 0);
m_endPos = KisPoint(0, 0);
m_reverse = false;
m_shape = KisGradientPainter::GradientShapeLinear;
m_repeat = KisGradientPainter::GradientRepeatNone;
m_antiAliasThreshold = 0.2;
}
KisToolGradient::~KisToolGradient()
{
}
void KisToolGradient::update(KisCanvasSubject *subject)
{
m_subject = subject;
super::update(m_subject);
}
void KisToolGradient::paint(KisCanvasPainter& gc)
{
if (m_dragging)
paintLine(gc);
}
void KisToolGradient::paint(KisCanvasPainter& gc, const TQRect&)
{
if (m_dragging)
paintLine(gc);
}
void KisToolGradient::buttonPress(KisButtonPressEvent *e)
{
if (!m_subject || !m_subject->currentImg()) {
return;
}
if (e->button() == Qt::LeftButton) {
m_dragging = true;
m_startPos = e->pos();
m_endPos = e->pos();
}
}
void KisToolGradient::move(KisMoveEvent *e)
{
if (m_dragging) {
if (m_startPos != m_endPos) {
paintLine();
}
if ((e->state() & TQt::ShiftButton) == TQt::ShiftButton) {
m_endPos = straightLine(e->pos());
}
else {
m_endPos = e->pos();
}
paintLine();
}
}
void KisToolGradient::buttonRelease(KisButtonReleaseEvent *e)
{
if (m_dragging && e->button() == Qt::LeftButton) {
KisCanvasController *controller = m_subject->canvasController();
KisImageSP img = m_subject->currentImg();
m_dragging = false;
if (m_startPos == m_endPos) {
controller->updateCanvas();
m_dragging = false;
return;
}
if ((e->state() & TQt::ShiftButton) == TQt::ShiftButton) {
m_endPos = straightLine(e->pos());
}
else {
m_endPos = e->pos();
}
KisPaintDeviceSP device;
if (img && (device = img->activeDevice())) {
KisGradientPainter painter(device);
if (img->undo()) painter.beginTransaction(i18n("Gradient"));
painter.setPaintColor(m_subject->fgColor());
painter.setGradient(*(m_subject->currentGradient()));
painter.setOpacity(m_opacity);
painter.setCompositeOp(m_compositeOp);
KisProgressDisplayInterface *progress = m_subject->progressDisplay();
if (progress) {
progress->setSubject(&painter, true, true);
}
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());
if (painted) {
// does whole thing at moment
device->setDirty(painter.dirtyRect());
notifyModified();
if (img->undo()) {
img->undoAdapter()->addCommand(painter.endTransaction());
}
}
/* remove remains of the line drawn while moving */
if (controller->kiscanvas()) {
controller->kiscanvas()->update();
}
}
}
}
KisPoint KisToolGradient::straightLine(KisPoint point)
{
KisPoint comparison = point - m_startPos;
KisPoint result;
if ( fabs(comparison.x()) > fabs(comparison.y())) {
result.setX(point.x());
result.setY(m_startPos.y());
} else {
result.setX( m_startPos.x() );
result.setY( point.y() );
}
return result;
}
void KisToolGradient::paintLine()
{
if (m_subject) {
KisCanvasController *controller = m_subject->canvasController();
KisCanvas *canvas = controller->kiscanvas();
KisCanvasPainter gc(canvas);
paintLine(gc);
}
}
void KisToolGradient::paintLine(KisCanvasPainter& gc)
{
if (m_subject) {
KisCanvasController *controller = m_subject->canvasController();
KisPoint start = controller->windowToView(m_startPos);
KisPoint end = controller->windowToView(m_endPos);
RasterOp op = gc.rasterOp();
TQPen old = gc.pen();
TQPen pen(TQt::SolidLine);
gc.setRasterOp(TQt::NotROP);
gc.setPen(pen);
gc.drawLine(start.floorTQPoint(), end.floorTQPoint());
gc.setRasterOp(op);
gc.setPen(old);
}
}
TQWidget* KisToolGradient::createOptionWidget(TQWidget* parent)
{
TQWidget *widget = super::createOptionWidget(parent);
TQ_CHECK_PTR(widget);
m_lbShape = new TQLabel(i18n("Shape:"), widget);
m_lbRepeat = new TQLabel(i18n("Repeat:"), widget);
m_ckReverse = new TQCheckBox(i18n("Reverse"), widget, "reverse_check");
connect(m_ckReverse, TQT_SIGNAL(toggled(bool)), this, TQT_SLOT(slotSetReverse(bool)));
m_cmbShape = new TQComboBox(false, widget, "shape_combo");
connect(m_cmbShape, TQT_SIGNAL(activated(int)), this, TQT_SLOT(slotSetShape(int)));
m_cmbShape->insertItem(i18n("Linear"));
m_cmbShape->insertItem(i18n("Bi-Linear"));
m_cmbShape->insertItem(i18n("Radial"));
m_cmbShape->insertItem(i18n("Square"));
m_cmbShape->insertItem(i18n("Conical"));
m_cmbShape->insertItem(i18n("Conical Symmetric"));
m_cmbRepeat = new TQComboBox(false, widget, "repeat_combo");
connect(m_cmbRepeat, TQT_SIGNAL(activated(int)), this, TQT_SLOT(slotSetRepeat(int)));
m_cmbRepeat->insertItem(i18n("None"));
m_cmbRepeat->insertItem(i18n("Forwards"));
m_cmbRepeat->insertItem(i18n("Alternating"));
addOptionWidgetOption(m_cmbShape, m_lbShape);
addOptionWidgetOption(m_cmbRepeat, m_lbRepeat);
addOptionWidgetOption(m_ckReverse);
m_lbAntiAliasThreshold = new TQLabel(i18n("Anti-alias threshold:"), widget);
m_slAntiAliasThreshold = new KDoubleNumInput(widget, "threshold_slider");
m_slAntiAliasThreshold->setRange( 0, 1);
m_slAntiAliasThreshold->setValue(m_antiAliasThreshold);
connect(m_slAntiAliasThreshold, TQT_SIGNAL(valueChanged(double)), this, TQT_SLOT(slotSetAntiAliasThreshold(double)));
addOptionWidgetOption(m_slAntiAliasThreshold, m_lbAntiAliasThreshold);
return widget;
}
void KisToolGradient::slotSetShape(int shape)
{
m_shape = static_cast<KisGradientPainter::enumGradientShape>(shape);
}
void KisToolGradient::slotSetRepeat(int repeat)
{
m_repeat = static_cast<KisGradientPainter::enumGradientRepeat>(repeat);
}
void KisToolGradient::slotSetReverse(bool state)
{
m_reverse = state;
}
void KisToolGradient::slotSetAntiAliasThreshold(double value)
{
m_antiAliasThreshold = value;
}
void KisToolGradient::setup(TDEActionCollection *collection)
{
m_action = static_cast<TDERadioAction *>(collection->action(name()));
if (m_action == 0) {
m_action = new TDERadioAction(i18n("&Gradient"),
"tool_gradient", TQt::Key_G, this,
TQT_SLOT(activate()), collection,
name());
m_action->setToolTip(i18n("Draw a gradient"));
m_action->setExclusiveGroup("tools");
m_ownAction = true;
}
}
#include "kis_tool_gradient.moc"