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koffice/chalk/ui/kobirdeyepanel.cpp

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/*
* This file is part of the KDE project
*
* Copyright (c) 2005 Boudewijn Rempt <boud@valdyas.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 <tqpixmap.h>
#include <tqimage.h>
#include <tqlayout.h>
#include <tqpainter.h>
#include <tqframe.h>
#include <tqlabel.h>
#include <tqtoolbutton.h>
#include <tqslider.h>
#include <tqcursor.h>
#include <kdebug.h>
#include <tdeglobalsettings.h>
#include <tdeaction.h>
#include <tdetoolbar.h>
#include <knuminput.h>
#include <tdelocale.h>
#include <KoDocument.h>
#include "wdgbirdeye.h"
#include "kobirdeyepanel.h"
#include "kis_int_spinbox.h"
KoCanvasAdapter::KoCanvasAdapter() {}
KoCanvasAdapter::~KoCanvasAdapter() {}
KoZoomAdapter::KoZoomAdapter() {}
KoZoomAdapter::~KoZoomAdapter() {}
KoThumbnailAdapter::KoThumbnailAdapter() {}
KoThumbnailAdapter::~KoThumbnailAdapter() {}
KoBirdEyePanel::KoBirdEyePanel( KoZoomAdapter * zoomListener,
KoThumbnailAdapter * thumbnailProvider,
KoCanvasAdapter * canvas,
TQWidget * parent,
const char * name,
WFlags f)
: TQWidget(parent, name, f)
, m_zoomListener(zoomListener)
, m_thumbnailProvider(thumbnailProvider)
, m_canvas(canvas)
, m_dragging(false)
{
TQHBoxLayout * l = new TQHBoxLayout(this);
m_page = new WdgBirdEye(this);
m_page->zoom->setRange((int) (TQMAX(1, 100 * zoomListener->getMinZoom())), (int) (100 * zoomListener->getMaxZoom()));
m_page->zoom->setValue(100);
m_page->zoom->setSuffix("%");
m_page->toolbar->setIconSize(16);
m_page->view->installEventFilter(this);
m_page->view->setBackgroundMode(TQt::NoBackground);
m_zoomIn = new TDEAction( i18n("Zoom In"), "birdeye_zoom_plus", 0, this, TQ_SLOT(zoomPlus()), this, "zoomIn" );
m_zoomOut = new TDEAction( i18n("Zoom Out"), "birdeye_zoom_minus", 0, this, TQ_SLOT(zoomMinus()), this, "zoomOut" );
l->addWidget(m_page);
connect(m_page->zoom, TQ_SIGNAL(valueChanged(int)), TQ_SLOT(zoomValueChanged(int)));
connect(m_page->bn100, TQ_SIGNAL(clicked()), TQ_SLOT(zoom100()));
connect(m_page->slZoom, TQ_SIGNAL(valueChanged(int)), TQ_SLOT(sliderChanged( int )));
}
KoBirdEyePanel::~KoBirdEyePanel()
{
delete m_canvas;
delete m_thumbnailProvider;
delete m_zoomListener;
}
void KoBirdEyePanel::setZoom(int zoom)
{
m_page->zoom->blockSignals(true);
m_page->slZoom->blockSignals(true);
m_page->zoom->setValue(zoom);
if (zoom < 10) {
m_page->slZoom->setValue(0);
}
else if (zoom > 10 && zoom < 100) {
m_page->slZoom->setValue(zoom / 10);
}
else if (zoom >= 100 && zoom < 150) {
m_page->slZoom->setValue(10);
}
else if (zoom >= 150 && zoom < 250) {
m_page->slZoom->setValue(11);
}
else if (zoom >= 250 && zoom < 350) {
m_page->slZoom->setValue(12);
}
else if (zoom >= 350 && zoom < 450) {
m_page->slZoom->setValue(13);
}
else if (zoom >= 450 && zoom < 550) {
m_page->slZoom->setValue(14);
}
else if (zoom >= 550 && zoom < 650) {
m_page->slZoom->setValue(15);
}
else if (zoom >= 650 && zoom < 875) {
m_page->slZoom->setValue(16);
}
else if (zoom >= 875 && zoom < 1150) {
m_page->slZoom->setValue(17);
}
else if (zoom >= 1150 && zoom < 1450) {
m_page->slZoom->setValue(18);
}
else if (zoom >= 1450) {
m_page->slZoom->setValue(19);
}
m_page->zoom->blockSignals(false);
m_page->slZoom->blockSignals(false);
}
void KoBirdEyePanel::zoomValueChanged(int zoom)
{
KoPoint center;
center = m_canvas->visibleArea().center();
m_zoomListener->zoomTo(center.x(), center.y(), zoom / 100.0);
setZoom(zoom);
}
void KoBirdEyePanel::zoom100()
{
zoomValueChanged( 100 );
}
void KoBirdEyePanel::sliderChanged( int v )
{
if (v < 10) {
zoomValueChanged((v + 1) * 10);
}
else {
switch(v) {
case 10:
zoomValueChanged(100);
break;
case 11:
zoomValueChanged(200);
break;
case 12:
zoomValueChanged(300);
case 13:
zoomValueChanged(400);
break;
case 14:
zoomValueChanged(500);
break;
case 15:
zoomValueChanged(600);
break;
case 16:
zoomValueChanged(750);
break;
case 17:
zoomValueChanged(1000);
break;
case 18:
zoomValueChanged(1300);
break;
case 19:
zoomValueChanged(1600);
break;
}
}
}
void KoBirdEyePanel::cursorPosChanged(TQ_INT32 xpos, TQ_INT32 ypos)
{
m_page->txtX->setText(TQString("%L1").arg(xpos, 5));
m_page->txtY->setText(TQString("%L1").arg(ypos, 5));
}
void KoBirdEyePanel::setThumbnailProvider(KoThumbnailAdapter * thumbnailProvider)
{
delete m_thumbnailProvider;
m_thumbnailProvider = thumbnailProvider;
}
void KoBirdEyePanel::slotViewTransformationChanged()
{
updateVisibleArea();
renderView();
m_page->view->update();
setZoom(tqRound(m_canvas->zoomFactor() * 100));
}
void KoBirdEyePanel::slotUpdate(const TQRect & r)
{
TQRect updateRect = r;
if (m_thumbnailProvider->pixelSize() != m_documentSize) {
m_documentSize = m_thumbnailProvider->pixelSize();
fitThumbnailToView();
updateRect = TQRect(0, 0, m_documentSize.width(), m_documentSize.height());
}
updateRect &= TQRect(0, 0, m_documentSize.width(), m_documentSize.height());
if (!updateRect.isEmpty() && !m_documentSize.isEmpty()) {
TQRect thumbnailRect = documentToThumbnail(KoRect::fromTQRect(updateRect));
if (!thumbnailRect.isEmpty()) {
TQImage thumbnailImage = m_thumbnailProvider->image(thumbnailRect, m_thumbnail.size());
if (!thumbnailImage.isNull()) {
Q_ASSERT(thumbnailImage.size() == thumbnailRect.size());
TQPainter painter(&m_thumbnail);
painter.fillRect(thumbnailRect, colorGroup().mid());
painter.drawImage(thumbnailRect.x(), thumbnailRect.y(), thumbnailImage);
}
}
}
renderView();
m_page->view->update();
}
TQRect KoBirdEyePanel::documentToThumbnail(const KoRect& docRect)
{
if (docRect.isEmpty() || m_documentSize.isEmpty() || m_thumbnail.isNull()) {
return TQRect();
}
TQ_INT32 thumbnailLeft = static_cast<TQ_INT32>((docRect.left() * m_thumbnail.width()) / m_documentSize.width());
TQ_INT32 thumbnailRight = static_cast<TQ_INT32>(((docRect.right() + 1) * m_thumbnail.width()) / m_documentSize.width());
TQ_INT32 thumbnailTop = static_cast<TQ_INT32>((docRect.top() * m_thumbnail.height()) / m_documentSize.height());
TQ_INT32 thumbnailBottom = static_cast<TQ_INT32>(((docRect.bottom() + 1) * m_thumbnail.height()) / m_documentSize.height());
TQRect thumbnailRect(thumbnailLeft, thumbnailTop, thumbnailRight - thumbnailLeft + 1, thumbnailBottom - thumbnailTop + 1);
thumbnailRect &= m_thumbnail.rect();
return thumbnailRect;
}
KoRect KoBirdEyePanel::thumbnailToDocument(const TQRect& thumbnailRect)
{
if (thumbnailRect.isEmpty() || m_documentSize.isEmpty() || m_thumbnail.isNull()) {
return KoRect();
}
double docLeft = (static_cast<double>(thumbnailRect.left()) * m_documentSize.width()) / m_thumbnail.width();
double docRight = (static_cast<double>(thumbnailRect.right() + 1) * m_documentSize.width()) / m_thumbnail.width();
double docTop = (static_cast<double>(thumbnailRect.top()) * m_documentSize.height()) / m_thumbnail.height();
double docBottom = (static_cast<double>(thumbnailRect.bottom() + 1) * m_documentSize.height()) / m_thumbnail.height();
KoRect docRect(docLeft, docTop, docRight - docLeft + 1, docBottom - docTop + 1);
docRect &= KoRect(0, 0, m_documentSize.width(), m_documentSize.height());
return docRect;
}
TQPoint KoBirdEyePanel::viewToThumbnail(const TQPoint& viewPoint)
{
int thumbnailX = (m_viewBuffer.width() - m_thumbnail.width()) / 2;
int thumbnailY = (m_viewBuffer.height() - m_thumbnail.height()) / 2;
return TQPoint(viewPoint.x() - thumbnailX, viewPoint.y() - thumbnailY);
}
void KoBirdEyePanel::zoomMinus()
{
}
void KoBirdEyePanel::zoomPlus()
{
}
void KoBirdEyePanel::updateVisibleArea()
{
m_visibleAreaInThumbnail = documentToThumbnail(m_canvas->visibleArea());
}
bool KoBirdEyePanel::eventFilter(TQObject* o, TQEvent* ev)
{
if (o == m_page->view && ev->type() == TQEvent::Resize) {
resizeViewEvent(static_cast<TQResizeEvent*>(ev)->size());
}
if (o == m_page->view && ev->type() == TQEvent::Paint) {
paintViewEvent(static_cast<TQPaintEvent*>(ev));
}
if (o == m_page->view && ev->type() == TQEvent::MouseMove) {
TQMouseEvent* me = (TQMouseEvent*)ev;
TQPoint thumbnailPos = viewToThumbnail(me->pos());
if (m_dragging) {
handleMouseMoveAction(thumbnailPos);
} else {
handleMouseMove(thumbnailPos);
}
return true;
}
if (o == m_page->view && ev->type() == TQEvent::MouseButtonPress) {
TQMouseEvent* me = (TQMouseEvent*)ev;
TQPoint thumbnailPos = viewToThumbnail(me->pos());
if (me->button() == TQt::LeftButton) {
handleMousePress(thumbnailPos);
}
return true;
}
if (o == m_page->view && ev->type() == TQEvent::MouseButtonRelease) {
TQMouseEvent* me = (TQMouseEvent*)ev;
if (me->button() == TQt::LeftButton) {
m_dragging = false;
}
return true;
}
return m_page->eventFilter(o, ev);
}
KoBirdEyePanel::enumDragHandle KoBirdEyePanel::dragHandleAt(TQPoint p)
{
TQRect left = TQRect(m_visibleAreaInThumbnail.left()-1, m_visibleAreaInThumbnail.top()-1, 3, m_visibleAreaInThumbnail.height()+2);
TQRect right = TQRect(m_visibleAreaInThumbnail.right()-1, m_visibleAreaInThumbnail.top()-1, 3, m_visibleAreaInThumbnail.height()+2);
TQRect top = TQRect(m_visibleAreaInThumbnail.left()-1, m_visibleAreaInThumbnail.top()-1, m_visibleAreaInThumbnail.width()+2, 3);
TQRect bottom = TQRect(m_visibleAreaInThumbnail.left()-1, m_visibleAreaInThumbnail.bottom()-1, m_visibleAreaInThumbnail.width()+2, 3);
if (left.contains(p)) {
return DragHandleLeft;
}
if (right.contains(p)) {
return DragHandleRight;
}
if (top.contains(p)) {
return DragHandleTop;
}
if (bottom.contains(p)) {
return DragHandleBottom;
}
if (m_visibleAreaInThumbnail.contains(p)) {
return DragHandleCentre;
}
return DragHandleNone;
}
void KoBirdEyePanel::handleMouseMove(TQPoint p)
{
TQCursor cursor;
switch (dragHandleAt(p)) {
case DragHandleLeft:
case DragHandleRight:
cursor = TQt::sizeHorCursor;
break;
case DragHandleTop:
case DragHandleBottom:
cursor = TQt::sizeVerCursor;
break;
case DragHandleCentre:
cursor = TQt::sizeAllCursor;
break;
default:
case DragHandleNone:
if (m_thumbnail.rect().contains(p)) {
cursor = TQt::PointingHandCursor;
} else {
cursor = TQt::arrowCursor;
}
break;
}
m_page->view->setCursor(cursor);
}
void KoBirdEyePanel::handleMouseMoveAction(TQPoint p)
{
if (m_dragging) {
TQ_INT32 dx = p.x() - m_lastDragPos.x();
TQ_INT32 dy = p.y() - m_lastDragPos.y();
m_lastDragPos = p;
TQRect thumbnailRect = m_visibleAreaInThumbnail;
switch (m_dragHandle) {
case DragHandleLeft: {
thumbnailRect.setLeft(thumbnailRect.left()+dx);
break;
}
case DragHandleRight: {
thumbnailRect.setRight(thumbnailRect.right()+dx);
break;
}
case DragHandleTop: {
thumbnailRect.setTop(thumbnailRect.top()+dy);
break;
}
case DragHandleBottom: {
thumbnailRect.setBottom(thumbnailRect.bottom()+dy);
break;
}
case DragHandleCentre: {
thumbnailRect.moveBy(dx, dy);
break;
}
default:
case DragHandleNone:
break;
}
makeThumbnailRectVisible(thumbnailRect);
}
}
void KoBirdEyePanel::handleMousePress(TQPoint p)
{
if (!m_dragging) {
enumDragHandle dragHandle = dragHandleAt(p);
if (dragHandle == DragHandleNone) {
if (m_thumbnail.rect().contains(p)) {
// Snap visible area centre to p and begin a centre drag.
TQRect thumbnailRect = m_visibleAreaInThumbnail;
thumbnailRect.moveCenter(p);
makeThumbnailRectVisible(thumbnailRect);
m_dragHandle = DragHandleCentre;
m_page->view->setCursor(TQt::sizeAllCursor);
m_dragging = true;
}
} else {
m_dragHandle = dragHandle;
m_dragging = true;
}
m_lastDragPos = p;
}
}
void KoBirdEyePanel::makeThumbnailRectVisible(const TQRect& r)
{
if (r.isEmpty()) {
return;
}
TQRect thumbnailRect = r;
if (thumbnailRect.left() < m_thumbnail.rect().left()) {
thumbnailRect.moveLeft(m_thumbnail.rect().left());
}
if (thumbnailRect.right() > m_thumbnail.rect().right()) {
thumbnailRect.moveRight(m_thumbnail.rect().right());
}
if (thumbnailRect.top() < m_thumbnail.rect().top()) {
thumbnailRect.moveTop(m_thumbnail.rect().top());
}
if (thumbnailRect.bottom() > m_thumbnail.rect().bottom()) {
thumbnailRect.moveBottom(m_thumbnail.rect().bottom());
}
if (thumbnailRect.width() > m_thumbnail.rect().width()) {
thumbnailRect.setLeft(m_thumbnail.rect().left());
thumbnailRect.setRight(m_thumbnail.rect().right());
}
if (thumbnailRect.height() > m_thumbnail.rect().height()) {
thumbnailRect.setTop(m_thumbnail.rect().top());
thumbnailRect.setBottom(m_thumbnail.rect().bottom());
}
double zoomFactor = m_canvas->zoomFactor();
if (thumbnailRect.size() == m_visibleAreaInThumbnail.size()) {
// No change to zoom
} else if (thumbnailRect.width() != m_visibleAreaInThumbnail.width()) {
Q_ASSERT(thumbnailRect.height() == m_visibleAreaInThumbnail.height());
zoomFactor *= static_cast<double>(m_visibleAreaInThumbnail.width()) / thumbnailRect.width();
} else {
Q_ASSERT(thumbnailRect.width() == m_visibleAreaInThumbnail.width());
zoomFactor *= static_cast<double>(m_visibleAreaInThumbnail.height()) / thumbnailRect.height();
}
if (zoomFactor < m_zoomListener->getMinZoom()) {
zoomFactor = m_zoomListener->getMinZoom();
} else if (zoomFactor > m_zoomListener->getMaxZoom()) {
zoomFactor = m_zoomListener->getMaxZoom();
}
KoRect docRect = thumbnailToDocument(thumbnailRect);
m_zoomListener->zoomTo(docRect.center().x(), docRect.center().y(), zoomFactor);
}
void KoBirdEyePanel::resizeViewEvent(TQSize size)
{
m_viewBuffer.resize(size);
fitThumbnailToView();
slotUpdate(TQRect(0, 0, m_documentSize.width(), m_documentSize.height()));
}
void KoBirdEyePanel::fitThumbnailToView()
{
TQRect docRect = TQRect(0, 0, m_thumbnailProvider->pixelSize().width(), m_thumbnailProvider->pixelSize().height());
TQ_INT32 thumbnailWidth;
TQ_INT32 thumbnailHeight;
if (docRect.isEmpty()) {
thumbnailWidth = 0;
thumbnailHeight = 0;
} else {
const int thumbnailBorderPixels = 4;
double xScale = double(m_page->view->contentsRect().width() - thumbnailBorderPixels) / docRect.width();
double yScale = double(m_page->view->contentsRect().height() - thumbnailBorderPixels) / docRect.height();
if (xScale < yScale) {
thumbnailWidth = m_page->view->contentsRect().width() - thumbnailBorderPixels;
thumbnailHeight = TQ_INT32(ceil(docRect.height() * xScale));
} else {
thumbnailWidth = TQ_INT32(ceil(docRect.width() * yScale));
thumbnailHeight = m_page->view->contentsRect().height() - thumbnailBorderPixels;
}
}
m_thumbnail.resize(thumbnailWidth, thumbnailHeight);
updateVisibleArea();
}
void KoBirdEyePanel::renderView()
{
Q_ASSERT(!m_viewBuffer.isNull());
if (!m_viewBuffer.isNull()) {
updateVisibleArea();
TQPainter painter(&m_viewBuffer);
painter.fillRect(0, 0, m_viewBuffer.width(), m_viewBuffer.height(), colorGroup().mid());
if (!m_thumbnail.isNull()) {
int thumbnailX = (m_viewBuffer.width() - m_thumbnail.width()) / 2;
int thumbnailY = (m_viewBuffer.height() - m_thumbnail.height()) / 2;
painter.drawPixmap(thumbnailX, thumbnailY, m_thumbnail);
painter.setPen(TQt::red);
painter.drawRect(thumbnailX + m_visibleAreaInThumbnail.x() - 1,
thumbnailY + m_visibleAreaInThumbnail.y() - 1,
m_visibleAreaInThumbnail.width() + 2,
m_visibleAreaInThumbnail.height() + 2);
painter.setPen(TQt::red.light());
painter.drawRect(thumbnailX + m_visibleAreaInThumbnail.x() - 2,
thumbnailY + m_visibleAreaInThumbnail.y() - 2,
m_visibleAreaInThumbnail.width() + 4,
m_visibleAreaInThumbnail.height() + 4);
}
}
}
void KoBirdEyePanel::paintViewEvent(TQPaintEvent *e)
{
Q_ASSERT(!m_viewBuffer.isNull());
if (!m_viewBuffer.isNull()) {
bitBlt(m_page->view, e->rect().x(), e->rect().y(), &m_viewBuffer,
e->rect().x(), e->rect().y(), e->rect().width(), e->rect().height());
}
}
#include "kobirdeyepanel.moc"