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/*
* Copyright 2012, 2013 Thomas Schöps
* Copyright 2014 Kai Pastor
*
* This file is part of OpenOrienteering.
*
* OpenOrienteering 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 3 of the License, or
* (at your option) any later version.
*
* OpenOrienteering 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 OpenOrienteering. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _OPENORIENTEERING_DRAW_LINE_AND_AREA_H_
#define _OPENORIENTEERING_DRAW_LINE_AND_AREA_H_
#include "tool.h"
#include <QScopedPointer>
class CombinedSymbol;
class PointObject;
class PathObject;
class MapRenderables;
class Symbol;
class PointSymbol;
class SymbolWidget;
class LineSymbol;
struct LineSymbolBorder;
/**
* Base class for drawing tools for line and area symbols.
* Provides some common functionality, e.g. displaying the preview objects or
* coping with changing symbols.
*/
class DrawLineAndAreaTool : public MapEditorTool
{
Q_OBJECT
public:
DrawLineAndAreaTool(MapEditorController* editor, Type tool_type, QAction* tool_action, bool is_helper_tool);
virtual ~DrawLineAndAreaTool();
virtual void leaveEvent(QEvent* event);
signals:
void dirtyRectChanged(const QRectF& rect);
void pathAborted();
void pathFinished(PathObject* path);
protected slots:
virtual void setDrawingSymbol(const Symbol* symbol);
protected:
/**
* Creates point objects and symbols which serve as a preview for
* drawing the selected symbol.
*/
void createPreviewPoints();
/** Creates preview point symbols for the given symbol. */
void addPreviewPointSymbols(const Symbol* symbol);
/** Creates preview point symbols for the border of the given line symbol. */
void addPreviewPointSymbolsForBorder(const LineSymbol* line, const LineSymbolBorder* border);
/**
* Sets the position of the preview objects (after cursor movements).
* @param map_coord The new position.
* @param points_index The index of the points set; there are two sets,
* so the preview points can be displayed at two positions at the same time.
*/
void setPreviewPointsPosition(MapCoordF map_coord, int points_index = 0);
/** Hides all preview points. */
void hidePreviewPoints();
/** Does necessary preparations to start drawing. */
void startDrawing();
/** Calls update() on the preview path, correctly handling its renderables. */
virtual void updatePreviewPath();
/** Aborts drawing. */
virtual void abortDrawing();
/** Finishes drawing, creating a new undo step. */
virtual void finishDrawing();
/** Finishes drawing, appending to the given object if not NULL. */
void finishDrawing(PathObject* append_to_object);
/** Deletes preview all objects and points. */
void deletePreviewObjects();
/** Extends the rect to conver all preview objects. */
void includePreviewRects(QRectF& rect);
/** Draws the preview objects. */
void drawPreviewObjects(QPainter* painter, MapWidget* widget);
bool is_helper_tool;
const Symbol* drawing_symbol;
std::vector<PointSymbol*> preview_point_symbols;
std::vector<bool> preview_point_symbols_external;
std::vector<PointObject*> preview_points[2];
int preview_point_radius;
bool preview_points_shown;
QScopedPointer<CombinedSymbol> path_combination;
PathObject* preview_path;
QScopedPointer<MapRenderables> renderables;
};
#endif
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