yamf/tools/view/zoom.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by Jorge Cuadrado                                  *
   3  *   kuadrosxx@gmail.com                                                     *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20
  21 #include "zoom.h"
  22
  23 #include <drawing/photogram.h>
  24 #include <drawing/brushmanager.h>
  25 #include <drawing/paintarea.h>
  26 #include <model/frame.h>
  27
  28 #include <dgui/action.h>
  29 #include <dgui/iconloader.h>
  30 #include <dcore/debug.h>
  31
  32 #include <QPointF>
  33 #include <QIcon>
  34 #include <QKeySequence>
  35 #include <QMatrix>
  36 #include <QGraphicsLineItem>
  37 #include <QGraphicsView>
  38 #include <QGraphicsRectItem>
  39 #include <QGraphicsSceneMouseEvent>
  40
  41
  42 namespace YAMF {
  43
  44 namespace Drawing {
  45
  46 namespace Tool {
  47
  48 struct Zoom::Private
  49 {
  50         QGraphicsRectItem *rect;
  51         DGui::Action *action;
  52 };
  53
  54 Zoom::Zoom(QObject *parent) : AbstractTool(parent), d(new Private)
  55 {
  56         d->action = new DGui::Action( DGui::IconLoader::self()->load("system-search.svg"), tr("Zoom"), this);
  57
  58         d->rect = new QGraphicsRectItem;
  59 }
  60
  61
  62 Zoom::~Zoom()
  63 {
  64         delete d;
  65 }
  66
  67
  68 void Zoom::init(Photogram *photogram)
  69 {
  70
  71 }
  72
  73 QString Zoom::id() const
  74 {
  75         return tr("Zoom");
  76 }
  77
  78 void Zoom::press(const QGraphicsSceneMouseEvent *input, PaintArea *const paintArea)
  79 {
  80         if(!paintArea->scene()->items().contains(d->rect))
  81         {
  82                 paintArea->scene()->addItem(d->rect);
  83         }
  84
  85         d->rect->setRect(QRectF(input->scenePos(), QSizeF(0,0)));
  86
  87 }
  88
  89 void Zoom::move(const QGraphicsSceneMouseEvent *input, PaintArea *const paintArea)
  90 {
  91         if ( input->buttons() == Qt::LeftButton )
  92         {
  93                 paintArea->setDragMode(QGraphicsView::NoDrag);
  94
  95                 QRectF rect = d->rect->rect();
  96                 rect.setBottomLeft(input->scenePos());
  97                 d->rect->setRect(rect);
  98
  99                 rect = rect.normalized ();
 100                 if(rect.height() > 10 && rect.width() > 10 )
 101                 {
 102                         d->rect->setPen(QPen(Qt::black, 2, Qt::DashLine));
 103                 }
 104                 else
 105                 {
 106                         d->rect->setPen(QPen(Qt::red, 2, Qt::DashLine));
 107                 }
 108         }
 109 }
 110
 111 void Zoom::release(const QGraphicsSceneMouseEvent *input, PaintArea *const paintArea)
 112 {
 113         QRectF rect = d->rect->rect();
 114         if ( input->button() == Qt::LeftButton )
 115         {
 116                 if(rect.normalized().height() > 10 && rect.normalized().width() > 10 )
 117                 {
 118                         paintArea->scene()->removeItem(d->rect);
 119                         paintArea->fitInView( rect, Qt::KeepAspectRatio);
 120                 }
 121         }
 122         else if ( input->button() == Qt::RightButton )
 123         {
 124                 QRectF visibleRect = paintArea->visibleRegion().boundingRect();
 125
 126                 paintArea->fitInView( visibleRect.adjusted((rect.width()+50), 0, 0, (rect.height()+50)), Qt::KeepAspectRatio );
 127         }
 128 }
 129
 130 DGui::Action *Zoom::action() const
 131 {
 132         return d->action;
 133 }
 134
 135 int Zoom::type() const
 136 {
 137         return AbstractTool::View;
 138 }
 139
 140 void Zoom::aboutToChangeTool()
 141 {
 142 }
 143
 144 void Zoom::photogramChanged(Photogram *const photogram)
 145 {
 146
 147 }
 148
 149
 150 }
 151
 152 }
 153
 154 }