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125 lines
3.2 KiB
125 lines
3.2 KiB
//------------------------------------------------------------------------------
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//
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// Project: Anonymizer
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//
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// Brno University of Technology
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// Faculty of Information Technology
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//
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//------------------------------------------------------------------------------
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//
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// This project was financially supported by project VG20102015006 funds
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// provided by Ministry of the Interior of the Czech republic.
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//
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//------------------------------------------------------------------------------
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/*!
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@file imagelabel.h
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@brief Header file
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@details Details
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@authors Martin Borek (mborekcz@gmail.com)
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@authors Filip Orsag (orsag@fit.vutbr.cz)
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@date 2014-2015
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@note This project was supported by MV CR project VG20102015006.
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@copyright BUT OPEN SOURCE LICENCE (see License.txt)
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*/
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#ifndef IMAGELABEL_H
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#define IMAGELABEL_H
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#include "selection.h"
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#include <QLabel>
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#include <QMouseEvent>
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class ImageLabel : public QLabel
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{
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Q_OBJECT
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public:
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/**
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* Constructor
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* @param parent Parent widget
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*/
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explicit ImageLabel(QWidget *parent = 0);
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/**
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* Destructor
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*/
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~ImageLabel();
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/**
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* Sets new image. It ss called also when the MainWindow is resized.
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* @param image Original image
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* @param displayWidth Maximal allowed width (with respect to the current size of the window)
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* @param displayHeight Maximal allowed height
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*/
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void set_image(QImage const &image, int displayWidth, int displayHeight);
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/**
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* Returns position of the currently selected area.
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* @return Selected area
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*/
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Selection get_selection() const;
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/**
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* Enables or disables object (area) selection.
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* @param enabled If true, selection is enabled. If false, selection is disabled.
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*/
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void set_selection_enabled(bool enabled);
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//void hide_selection();
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protected:
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/**
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* Updates the ImageLabel when the MainWindows is resized.
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*/
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void resizeEvent(QResizeEvent *);
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/**
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* Handles mouse press events over the ImageLabel area.
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* @param event
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*/
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void mousePressEvent(QMouseEvent * event);
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/**
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* Handles mouse release events over the ImageLabel area.
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* @param event
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*/
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void mouseReleaseEvent(QMouseEvent * event);
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/**
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* Handles mouse move events over the ImageLabel area.
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* @param event
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*/
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void mouseMoveEvent(QMouseEvent * event);
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private:
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/**
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* Shows the image without highlight any selection.
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*/
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void show_without_selection();
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/**
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* Shows the image with highlighted selection.
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*/
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void show_with_selection();
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private:
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bool selectionEnabled;
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bool isPressed; // true -> mouse button pressed over the image
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//bool isSelected; // selection exists, therefore is displayed
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int posX; // x coordinate, where the selection starts
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int posY; // y coordinate, where the selection starts
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int imgWidth; // width of original (unscaled) image
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int imgHeight; // height of original (unscaled) image
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int scaledWidth; // width of image at the time of selecting
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int scaledHeight;
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Selection selection; // selection geometry - values with respect to scaledWidth and scaledHeight
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QImage scaledImage;
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};
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#endif // IMAGELABEL_H
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