SimpleEarth/src/LabelTool.cpp at master · MAPSWorks/SimpleEarth · GitHub

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* The Simple Earth Project

* Author: Hector Mendoza, hector.mendoza@huesoftllc.com

* This file is part of the Simple Earth Project.

* The Simple Earth Project is free software: you can redistribute it

* and/or modify it under the terms of the GNU Lesser General Public

* License as published by the Free Software Foundation, either version

* 3 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

* Lesser General Public License for more details.

* You should have received a copy of the GNU Lesser General Public

* License along with this program. If not, see

* <http://www.gnu.org/licenses/>.

#include "LabelTool.h"

#include "WorldObjectManager.h"

#include "Utilities.h"

#include "LabelWindow.h"

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* Constructor. Calls parent constructor with an ID of "Label" and with the

* given parameter values. Initializes attributes.

* @param toolButton Handle to corresponding toolbar button

* @param dialog Handle to corresponding tool dialog

LabelTool::LabelTool(QToolButton* toolButton, QDialog* dialog) : Tool("Label", toolButton, dialog)

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

//Instantiate dummy label and add it to world object manager.

//This is the label that will get rendered while the user is

//editing the label's attributes

mDummyLabel = new WorldObject();

mDummyLabel->setIsVisible(false);

mDummyLabel->setName("LabelToolDummy");

mDummyLabel->setLabel("Label");

WorldObjectManager::getInstance()->addWorldObject(mDummyLabel);

mCalculateClickPosition = false;

}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* Destructor.

LabelTool::~LabelTool()

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* OVERRIDE FOR Tool. Given that we need to calculate click(pick) position on

* OpenGL render thread the this mCalculateClickPosition flag is set to true on

* the onMouseReleaseEvent method. When calculation is done, this method updates

* the label tool window with the selected(picked) coordinates. After the user

* is done editting this label and hits the OK button, the system will call the

* addCurrent method.

void LabelTool::render()

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

if (mCalculateClickPosition)

{

//convert click coordinate to world coordinate

SimpleVector worldCoordinate = Utilities::screenToWorld(mClickCordinates);

//reset calculate flag

mCalculateClickPosition = false;

//update label position

setPosition(worldCoordinate);

//update label window

LabelWindow* labelWindow = (LabelWindow*)mDialog;

labelWindow->setPosition(worldCoordinate);

}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* Adds current volume to WorldObjectManager's list. Note how we copy all the

* data from our dummy label.

* @return True if add was a success, false if there is a naming conflict (a

* world object with that name already exists)

bool LabelTool::addCurrent()

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

bool returnValue = true;

WorldObject* worldObject = new WorldObject;

//copy all attributes

worldObject->copy(mDummyLabel);

//set object name with label's text

worldObject->setName(mDummyLabel->getLabel());

//set label as a group

worldObject->setGroup(WorldObject::LABEL);

//if addWorldObject returns false, then the add failed because

//there was already an object with that name in the list,

//so we need to delete the object we just created

if (!WorldObjectManager::getInstance()->addWorldObject(worldObject))

{

//note: the volume renderer that we associated with this world

//object will get deleted on the world object's destructor

delete worldObject;

returnValue = false;

}

return returnValue;

}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* Called on a right mouse button release event when the label tools is

* selected. Saves click coordinates and sets the flag to calculate mouse click

* position on the OpenGL render cycle.

* @param event Qt's mouse event

void LabelTool::onMouseReleaseEvent(QMouseEvent* event)

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

mClickCordinates.x = event->x();

mClickCordinates.y = event->y();

mCalculateClickPosition = true;

}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* Sets the current label's text.

* @param labelText New text for current(dummy) label

void LabelTool::setLabelText(const QString& labelText)

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

mDummyLabel->setLabel(labelText);

}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* Sets the position for the current(dummy) label.

* @param position New position for the current label

void LabelTool::setPosition(const SimpleVector& position)

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

mDummyLabel->setPosition(position);

}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* Sets the color for the current(dummy) label.

* @param color New color for the current label

void LabelTool::setColor(const SimpleColor& color)

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

mDummyLabel->setColor(color);

}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* Sets the dummy lable's visibility so that we hide/show appropriately. Set

* value to true to make label visible. Note that "View Labels" also has to be

* enabled from the View menu in order to see any labels.

* @param value Set to true to make label visible

void LabelTool::setDummyLabelVisible(bool value)

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

mDummyLabel->setIsVisible(value);

}

SimpleEarth/src/LabelTool.cpp at master · MAPSWorks/SimpleEarth · GitHub

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