1 files changed, 625 insertions, 0 deletions

diff --git a/src/libs/widgets/imageplugins/imageguidewidget.cpp b/src/libs/widgets/imageplugins/imageguidewidget.cpp
new file mode 100644
index 00000000..4ed7f254
--- /dev/null
+++ b/src/libs/widgets/imageplugins/imageguidewidget.cpp
@@ -0,0 +1,625 @@
+/* ============================================================
+ *
+ * This file is a part of digiKam project
+ * http://www.digikam.org
+ *
+ * Date        : 2004-11-16
+ * Description : a widget to display an image with guides
+ *
+ * Copyright (C) 2004-2008 by Gilles Caulier <caulier dot gilles at gmail dot 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, 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.
+ * 
+ * ============================================================ */
+
+// TQt includes.
+
+#include <tqregion.h>
+#include <tqpainter.h>
+#include <tqpen.h>
+#include <tqpixmap.h>
+#include <tqtooltip.h>
+#include <tqtimer.h>
+#include <tqrect.h>
+#include <tqbrush.h>
+#include <tqfont.h> 
+#include <tqfontmetrics.h> 
+
+// KDE includes.
+
+#include <kstandarddirs.h>
+#include <kcursor.h>
+#include <tdeglobal.h> 
+
+// Local includes.
+
+#include "ddebug.h"
+#include "dimg.h"
+#include "imageiface.h"
+#include "imageguidewidget.h"
+#include "imageguidewidget.moc"
+
+namespace Digikam
+{
+
+class ImageGuideWidgetPriv
+{
+public:
+
+    ImageGuideWidgetPriv()
+    {
+        pixmap                    = 0;
+        iface                     = 0;
+        flicker                   = 0;
+        timerID                   = 0;
+        focus                     = false;
+        onMouseMovePreviewToggled = true;
+        renderingPreviewMode      = ImageGuideWidget::NoPreviewMode;
+        underExposureIndicator    = false;
+        overExposureIndicator     = false;
+    }
+
+    bool        sixteenBit;
+    bool        focus;
+    bool        spotVisible;
+    bool        onMouseMovePreviewToggled;
+    bool        underExposureIndicator;
+    bool        overExposureIndicator;
+    
+    int         width;
+    int         height;
+    int         timerID;
+    int         guideMode;
+    int         guideSize;
+    int         flicker;
+    int         renderingPreviewMode;
+
+    // Current spot position in preview coordinates.
+    TQPoint      spot;
+    
+    TQRect       rect;
+    
+    TQColor      guideColor;
+        
+    TQPixmap    *pixmap;
+    
+    ImageIface *iface;
+    
+    DImg        preview;
+};
+
+ImageGuideWidget::ImageGuideWidget(int w, int h, TQWidget *parent,
+                                   bool spotVisible, int guideMode, 
+                                   const TQColor& guideColor, int guideSize, 
+                                   bool blink, bool useImageSelection)
+                : TQWidget(parent, 0, TQt::WDestructiveClose)
+{
+    d = new ImageGuideWidgetPriv;
+    d->spotVisible = spotVisible;
+    d->guideMode   = guideMode;
+    d->guideColor  = guideColor;
+    d->guideSize   = guideSize;
+    
+    setBackgroundMode(TQt::NoBackground);
+    setMinimumSize(w, h);
+    setMouseTracking(true);
+
+    d->iface        = new ImageIface(w, h);
+    d->iface->setPreviewType(useImageSelection);
+    uchar *data     = d->iface->getPreviewImage();
+    d->width        = d->iface->previewWidth();
+    d->height       = d->iface->previewHeight();
+    bool sixteenBit = d->iface->previewSixteenBit();
+    bool hasAlpha   = d->iface->previewHasAlpha();
+    d->preview      = DImg(d->width, d->height, sixteenBit, hasAlpha, data);
+    d->preview.setICCProfil( d->iface->getOriginalImg()->getICCProfil() );
+    
+    delete [] data;
+
+    d->pixmap = new TQPixmap(w, h);
+    d->rect   = TQRect(w/2-d->width/2, h/2-d->height/2, d->width, d->height);
+
+    resetSpotPosition();
+    setSpotVisible(d->spotVisible, blink);
+}
+
+ImageGuideWidget::~ImageGuideWidget()
+{
+    delete d->iface;
+    
+    if (d->timerID)
+        killTimer(d->timerID);
+           
+    if (d->pixmap)
+        delete d->pixmap;
+        
+    delete d;
+}
+
+ImageIface* ImageGuideWidget::imageIface()
+{
+    return d->iface;
+}
+
+void ImageGuideWidget::slotToggleUnderExposure(bool u)
+{
+    d->underExposureIndicator = u;
+    updatePreview();
+}
+    
+void ImageGuideWidget::slotToggleOverExposure(bool o)
+{
+    d->overExposureIndicator = o;
+    updatePreview();
+}    
+
+void ImageGuideWidget::resetSpotPosition()
+{
+    d->spot.setX( d->width  / 2 );
+    d->spot.setY( d->height / 2 );
+    updatePreview();
+}
+
+void ImageGuideWidget::slotChangeRenderingPreviewMode(int mode)
+{
+    d->renderingPreviewMode = mode;
+    updatePreview();
+}
+
+int ImageGuideWidget::getRenderingPreviewMode()
+{
+    return (d->renderingPreviewMode);
+}
+
+TQPoint ImageGuideWidget::getSpotPosition()
+{
+    return (TQPoint( (int)((float)d->spot.x() * (float)d->iface->originalWidth()  / (float)d->width),
+                    (int)((float)d->spot.y() * (float)d->iface->originalHeight() / (float)d->height)));
+}
+
+DColor ImageGuideWidget::getSpotColor(int getColorFrom)
+{
+    if (getColorFrom == OriginalImage)                          // Get point color from full original image
+        return (d->iface->getColorInfoFromOriginalImage(getSpotPosition()));
+    else if (getColorFrom == PreviewImage)                      // Get point color from full preview image
+        return (d->iface->getColorInfoFromPreviewImage(d->spot));
+
+    // In other cases, get point color from preview target image
+    return (d->iface->getColorInfoFromTargetPreviewImage(d->spot));
+}
+
+void ImageGuideWidget::setSpotVisible(bool spotVisible, bool blink)
+{
+    d->spotVisible = spotVisible;
+    
+    if (blink)
+    {
+        if (d->spotVisible)
+            d->timerID = startTimer(800);
+        else
+        {
+            killTimer(d->timerID);
+            d->timerID = 0;
+        }
+    }
+       
+    updatePreview();
+}
+
+void ImageGuideWidget::slotChangeGuideColor(const TQColor &color)
+{
+    d->guideColor = color;
+    updatePreview();
+}
+
+void ImageGuideWidget::slotChangeGuideSize(int size)
+{
+    d->guideSize = size;
+    updatePreview();
+}
+
+void ImageGuideWidget::updatePixmap()
+{
+    TQPainter p(d->pixmap);
+    TQString text;
+    TQRect textRect, fontRect;
+    TQFontMetrics fontMt = p.fontMetrics();
+    p.setPen(TQPen(TQt::red, 1)) ;
+    
+    d->pixmap->fill(colorGroup().background());
+
+    if (d->renderingPreviewMode == PreviewOriginalImage ||
+        (d->renderingPreviewMode == PreviewToggleOnMouseOver && d->onMouseMovePreviewToggled == false ))
+    {
+        p.drawPixmap(d->rect, d->iface->convertToPixmap(d->preview));
+
+        text = i18n("Original");
+        fontRect = fontMt.boundingRect(0, 0, d->rect.width(), d->rect.height(), 0, text);
+        textRect.setTopLeft(TQPoint(d->rect.x() + 20, d->rect.y() + 20));
+        textRect.setSize( TQSize(fontRect.width()+2, fontRect.height()+2 ) );
+        p.fillRect(textRect, TQBrush(TQColor(250, 250, 255)) );
+        p.drawRect(textRect);
+        p.drawText(textRect, TQt::AlignCenter, text);
+    }
+    else if (d->renderingPreviewMode == PreviewTargetImage || d->renderingPreviewMode == NoPreviewMode ||
+            (d->renderingPreviewMode == PreviewToggleOnMouseOver && d->onMouseMovePreviewToggled == true ))
+    {
+        d->iface->paint(d->pixmap, d->rect.x(), d->rect.y(),
+                        d->rect.width(), d->rect.height(), 
+                        d->underExposureIndicator, d->overExposureIndicator);
+
+        if (d->renderingPreviewMode == PreviewTargetImage ||
+            d->renderingPreviewMode == PreviewToggleOnMouseOver)
+        {
+            text = i18n("Target");
+            fontRect = fontMt.boundingRect(0, 0, d->rect.width(), d->rect.height(), 0, text);
+            textRect.setTopLeft(TQPoint(d->rect.x() + 20, d->rect.y() + 20));
+            textRect.setSize( TQSize(fontRect.width()+2, fontRect.height()+2 ) );
+            p.fillRect(textRect, TQBrush(TQColor(250, 250, 255)) );
+            p.drawRect(textRect);
+            p.drawText(textRect, TQt::AlignCenter, text);
+        }
+    }
+    else if (d->renderingPreviewMode == PreviewBothImagesVert || 
+             d->renderingPreviewMode == PreviewBothImagesVertCont)
+    {
+        if (d->renderingPreviewMode == PreviewBothImagesVert)
+        {
+            // Drawing the original image.
+            p.drawPixmap(d->rect, d->iface->convertToPixmap(d->preview));
+
+            // Drawing the target image under the original.
+            d->iface->paint(d->pixmap,
+                            d->rect.x()+d->rect.width()/2,
+                            d->rect.y(),
+                            d->rect.width()/2,
+                            d->rect.height(), 
+                            d->underExposureIndicator, 
+                            d->overExposureIndicator);
+        }
+        else
+        {
+            // Drawing the target image.
+            d->iface->paint(d->pixmap,
+                            d->rect.x(),
+                            d->rect.y(),
+                            d->rect.width(),
+                            d->rect.height(), 
+                            d->underExposureIndicator, 
+                            d->overExposureIndicator);
+
+            // Drawing the original image under the target.
+            p.drawPixmap(d->rect.x(), d->rect.y(), d->iface->convertToPixmap(d->preview),
+                         0, 0, d->rect.width()/2, d->rect.height());
+        }
+
+        // Drawing the information and others stuff.
+        p.fillRect(d->rect.right(), 0, width(), height(), colorGroup().background());
+
+        p.setPen(TQPen(TQt::white, 2, TQt::SolidLine));
+        p.drawLine(d->rect.x()+d->rect.width()/2-1,
+                   d->rect.y(),
+                   d->rect.x()+d->rect.width()/2-1,
+                   d->rect.y()+d->rect.height());
+        p.setPen(TQPen(TQt::red, 2, TQt::DotLine));
+        p.drawLine(d->rect.x()+d->rect.width()/2-1,
+                   d->rect.y(),
+                   d->rect.x()+d->rect.width()/2-1,
+                   d->rect.y()+d->rect.height());
+
+        p.setPen(TQPen(TQt::red, 1)) ;
+
+        text = i18n("Target");
+        fontRect = fontMt.boundingRect(0, 0, d->rect.width(), d->rect.height(), 0, text);
+        textRect.setTopLeft(TQPoint(d->rect.x() + d->rect.width()/2 + 20,
+                                   d->rect.y() + 20));
+        textRect.setSize( TQSize(fontRect.width()+2, fontRect.height()+2) );
+        p.fillRect(textRect, TQBrush(TQColor(250, 250, 255)) );
+        p.drawRect(textRect);
+        p.drawText(textRect, TQt::AlignCenter, text);
+
+        text = i18n("Original");
+        fontRect = fontMt.boundingRect(0, 0, d->rect.width(), d->rect.height(), 0, text);
+        textRect.setTopLeft(TQPoint(d->rect.x() + 20, d->rect.y() + 20));
+        textRect.setSize( TQSize(fontRect.width()+2, fontRect.height()+2 ) );
+        p.fillRect(textRect, TQBrush(TQColor(250, 250, 255)) );
+        p.drawRect(textRect);
+        p.drawText(textRect, TQt::AlignCenter, text);
+    }
+    else if (d->renderingPreviewMode == PreviewBothImagesHorz ||
+             d->renderingPreviewMode == PreviewBothImagesHorzCont)
+    {
+        if (d->renderingPreviewMode == PreviewBothImagesHorz)
+        {
+            // Drawing the original image.
+            p.drawPixmap(d->rect, d->iface->convertToPixmap(d->preview));
+
+            // Drawing the target image under the original.
+            d->iface->paint(d->pixmap,
+                            d->rect.x(),
+                            d->rect.y()+d->rect.height()/2,
+                            d->rect.width(),
+                            d->rect.height()/2, 
+                            d->underExposureIndicator, 
+                            d->overExposureIndicator);
+        }
+        else
+        {
+            // Drawing the target image.
+            d->iface->paint(d->pixmap,
+                            d->rect.x(),
+                            d->rect.y(),
+                            d->rect.width(),
+                            d->rect.height(), 
+                            d->underExposureIndicator, 
+                            d->overExposureIndicator);
+
+            // Drawing the original image under the target.
+            p.drawPixmap(d->rect.x(), d->rect.y(), d->iface->convertToPixmap(d->preview),
+                         0, 0, d->rect.width(), d->rect.height()/2);
+        }
+
+        p.fillRect(0, d->rect.bottom(), width(), height(), colorGroup().background());
+
+        p.setPen(TQPen(TQt::white, 2, TQt::SolidLine));
+        p.drawLine(d->rect.x(),
+                   d->rect.y()+d->rect.height()/2-1,
+                   d->rect.x()+d->rect.width(),
+                   d->rect.y()+d->rect.height()/2-1);
+        p.setPen(TQPen(TQt::red, 2, TQt::DotLine));
+        p.drawLine(d->rect.x(),
+                   d->rect.y()+d->rect.height()/2-1,
+                   d->rect.x()+d->rect.width(),
+                   d->rect.y()+d->rect.height()/2-1);
+
+        p.setPen(TQPen(TQt::red, 1)) ;
+
+        text = i18n("Target");
+        fontRect = fontMt.boundingRect(0, 0, d->rect.width(), d->rect.height(), 0, text);
+        textRect.setTopLeft(TQPoint(d->rect.x() + 20,
+                                   d->rect.y() + d->rect.height()/2 + 20));
+        textRect.setSize( TQSize(fontRect.width()+2, fontRect.height()+2) );
+        p.fillRect(textRect, TQBrush(TQColor(250, 250, 255)) );
+        p.drawRect(textRect);
+        p.drawText(textRect, TQt::AlignCenter, text);
+
+        text = i18n("Original");
+        fontRect = fontMt.boundingRect(0, 0, d->rect.width(), d->rect.height(), 0, text);
+        textRect.setTopLeft(TQPoint(d->rect.x() + 20, d->rect.y() + 20));
+        textRect.setSize( TQSize(fontRect.width()+2, fontRect.height()+2 ) );
+        p.fillRect(textRect, TQBrush(TQColor(250, 250, 255)) );
+        p.drawRect(textRect);
+        p.drawText(textRect, TQt::AlignCenter, text);
+    }
+
+    if (d->spotVisible)
+    {
+       // Adapt spot from image coordinate to widget coordinate.
+       int xspot = d->spot.x() + d->rect.x();
+       int yspot = d->spot.y() + d->rect.y();
+       
+       switch (d->guideMode)
+       {
+          case HVGuideMode:
+          {
+             p.setPen(TQPen(TQt::white, d->guideSize, TQt::SolidLine));
+             p.drawLine(xspot, d->rect.top() + d->flicker, xspot, d->rect.bottom() - d->flicker);
+             p.drawLine(d->rect.left() + d->flicker, yspot, d->rect.right() - d->flicker, yspot);
+             p.setPen(TQPen(d->guideColor, d->guideSize, TQt::DotLine));
+             p.drawLine(xspot, d->rect.top() + d->flicker, xspot, d->rect.bottom() - d->flicker);
+             p.drawLine(d->rect.left() + d->flicker, yspot, d->rect.right() - d->flicker, yspot);
+             break;
+          }
+            
+          case PickColorMode:
+          {
+             p.setPen(TQPen(d->guideColor, 1, TQt::SolidLine));
+             p.drawLine(xspot-10, yspot-10, xspot+10, yspot+10);
+             p.drawLine(xspot+10, yspot-10, xspot-10, yspot+10);
+             p.setPen(TQPen(d->guideColor, 3, TQt::SolidLine));
+             p.drawEllipse( xspot-5, yspot-5, 11, 11 );
+
+             if (d->flicker%2 != 0)
+             {
+                p.setPen(TQPen(TQt::white, 1, TQt::SolidLine));
+                p.drawEllipse( xspot-5, yspot-5, 11, 11 );
+             }
+                
+             break;
+          }
+       }
+    }
+    
+    p.end();
+}
+
+void ImageGuideWidget::paintEvent(TQPaintEvent*)
+{
+    bitBlt(this, 0, 0, d->pixmap);
+}
+
+void ImageGuideWidget::updatePreview()
+{
+    updatePixmap();
+    repaint(false);
+}
+
+void ImageGuideWidget::timerEvent(TQTimerEvent* e)
+{
+    if (e->timerId() == d->timerID)
+    {
+       if (d->flicker == 5) d->flicker=0;
+       else d->flicker++;
+       updatePreview();
+    }
+    else
+       TQWidget::timerEvent(e);
+}
+
+void ImageGuideWidget::resizeEvent(TQResizeEvent* e)
+{
+    blockSignals(true);
+    delete d->pixmap;
+    int w = e->size().width();
+    int h = e->size().height();
+    int old_w = d->width;
+    int old_h = d->height;
+
+    uchar *data     = d->iface->setPreviewImageSize(w, h);
+    d->width        = d->iface->previewWidth();
+    d->height       = d->iface->previewHeight();
+    bool sixteenBit = d->iface->previewSixteenBit();
+    bool hasAlpha   = d->iface->previewHasAlpha();
+    d->preview      = DImg(d->width, d->height, sixteenBit, hasAlpha, data);
+    d->preview.setICCProfil( d->iface->getOriginalImg()->getICCProfil() );
+    
+    delete [] data;
+
+    d->pixmap = new TQPixmap(w, h);
+    d->rect   = TQRect(w/2-d->width/2, h/2-d->height/2, d->width, d->height);
+
+    d->spot.setX((int)((float)d->spot.x() * ( (float)d->width  / (float)old_w)));
+    d->spot.setY((int)((float)d->spot.y() * ( (float)d->height / (float)old_h)));
+    updatePixmap();
+    blockSignals(false);
+    emit signalResized();
+}
+
+void ImageGuideWidget::mousePressEvent(TQMouseEvent* e)
+{
+    if ( !d->focus && e->button() == TQt::LeftButton &&
+         d->rect.contains( e->x(), e->y() ) && d->spotVisible )
+    {
+       d->focus = true;
+       d->spot.setX(e->x()-d->rect.x());
+       d->spot.setY(e->y()-d->rect.y());
+       updatePreview();
+    }
+}
+
+void ImageGuideWidget::mouseReleaseEvent(TQMouseEvent* e)
+{
+    if ( d->rect.contains( e->x(), e->y() ) && d->focus && d->spotVisible)
+    {
+       d->focus = false;
+       updatePreview();
+       d->spot.setX(e->x()-d->rect.x());
+       d->spot.setY(e->y()-d->rect.y());
+       
+       DColor color;
+       TQPoint point = getSpotPosition();
+
+       if (d->renderingPreviewMode == PreviewOriginalImage)
+       {
+            color = getSpotColor(OriginalImage);
+            emit spotPositionChangedFromOriginal( color, d->spot );
+       }
+       else if (d->renderingPreviewMode == PreviewTargetImage || d->renderingPreviewMode == NoPreviewMode)
+       {
+            color = getSpotColor(TargetPreviewImage);
+            emit spotPositionChangedFromTarget( color, d->spot );
+       }
+       else if (d->renderingPreviewMode == PreviewBothImagesVert)
+       {
+            if (d->spot.x() > d->rect.width()/2)
+            {
+                color = getSpotColor(TargetPreviewImage);
+                emit spotPositionChangedFromTarget(color, TQPoint(d->spot.x() - d->rect.width()/2,
+                                                   d->spot.y()));
+            }
+            else
+            {
+                color = getSpotColor(OriginalImage);
+                emit spotPositionChangedFromOriginal( color, d->spot );
+            }
+       }
+       else if (d->renderingPreviewMode == PreviewBothImagesVertCont)
+       {
+            if (d->spot.x() > d->rect.width()/2)
+            {
+                color = getSpotColor(TargetPreviewImage);
+                emit spotPositionChangedFromTarget( color, d->spot);
+            }
+            else
+            {
+                color = getSpotColor(OriginalImage);
+                emit spotPositionChangedFromOriginal( color, d->spot );
+            }
+       }
+       else if (d->renderingPreviewMode == PreviewBothImagesHorz)
+       {
+            if (d->spot.y() > d->rect.height()/2)
+            {
+                color = getSpotColor(TargetPreviewImage);
+                emit spotPositionChangedFromTarget(color, TQPoint(d->spot.x(), 
+                                                   d->spot.y() - d->rect.height()/2 ));
+            }
+            else
+            {
+                color = getSpotColor(OriginalImage);
+                emit spotPositionChangedFromOriginal( color, d->spot );
+            }
+       }
+       else if (d->renderingPreviewMode == PreviewBothImagesHorzCont)
+       {
+            if (d->spot.y() > d->rect.height()/2)
+            {
+                color = getSpotColor(TargetPreviewImage);
+                emit spotPositionChangedFromTarget( color, d->spot);
+            }
+            else
+            {
+                color = getSpotColor(OriginalImage);
+                emit spotPositionChangedFromOriginal( color, d->spot );
+            }
+       }
+    }
+}
+
+void ImageGuideWidget::mouseMoveEvent(TQMouseEvent* e)
+{
+    if ( d->rect.contains( e->x(), e->y() ) && !d->focus && d->spotVisible )
+    {
+        setCursor( KCursor::crossCursor() );
+    }
+    else if ( d->rect.contains( e->x(), e->y() ) && d->focus && d->spotVisible )
+    {
+        d->spot.setX(e->x()-d->rect.x());
+        d->spot.setY(e->y()-d->rect.y());
+    }
+    else
+    {
+        unsetCursor();
+    }
+}
+
+void ImageGuideWidget::enterEvent(TQEvent*)
+{
+    if ( !d->focus && d->renderingPreviewMode == PreviewToggleOnMouseOver )
+    {
+        d->onMouseMovePreviewToggled = false;
+        updatePixmap();
+        repaint(false);
+    }
+}
+
+void ImageGuideWidget::leaveEvent(TQEvent*)
+{
+    if ( !d->focus && d->renderingPreviewMode == PreviewToggleOnMouseOver )
+    {
+        d->onMouseMovePreviewToggled = true;
+        updatePixmap();
+        repaint(false);
+    }
+}
+
+}  // NameSpace Digikam