mirror of https://github.com/KLayout/klayout.git
363 lines
9.5 KiB
C++
363 lines
9.5 KiB
C++
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/*
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KLayout Layout Viewer
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Copyright (C) 2006-2017 Matthias Koefferlein
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef HDR_layBitmapRedrawThreadCanvas
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#define HDR_layBitmapRedrawThreadCanvas
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#include "dbBox.h"
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#include "dbVector.h"
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#include "dbTrans.h"
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#include "layViewOp.h"
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#include "layBitmapRenderer.h"
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#include <vector>
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#include <QMutex>
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#include <QColor>
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class QImage;
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namespace lay {
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class CanvasPlane;
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class Bitmap;
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class Drawings;
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class DitherPattern;
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class LineStyles;
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class RedrawThreadCanvas
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{
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public:
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/**
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* @brief Constructor
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*/
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RedrawThreadCanvas ()
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: m_resolution (1.0), m_width (0), m_height (0)
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{ }
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/**
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* @brief Destructor
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*/
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virtual ~RedrawThreadCanvas () { }
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/**
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* @brief Signal that a transfer has been done
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*
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* This method is called (from the redraw thread) if a transfer has been performed ansynchreously
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*/
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virtual void signal_transfer_done () { }
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/**
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* @brief Signal that the drawing has ended
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*
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* This method is called (from the redraw thread) once the drawing has ended.
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*/
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virtual void signal_end_of_drawing () { }
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/**
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* @brief Returns true, if shifting is supported
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*/
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virtual bool shift_supported () const
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{
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return false;
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}
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/**
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* @brief Prepare the given number of planes with shifting
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*
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* This method is called from RedrawThread::start (), not from the
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* redraw thread.
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*
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* @param nlayers The number of layers to prepare
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* @param width The width of the canvas
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* @param height The height of the canvas
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* @param shifting The shift vector by which the original image should be shifted to form the background or 0 if no shifting is required
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* @param layers The set of plane indexes to initialize (if null, all planes are initialized). A negative value initializes the drawing planes.
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* @param resolution The resolution in which the image is drawn
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* @param drawings The custom drawing interface which is responsible to draw user objects
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*/
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virtual void prepare (unsigned int /*nlayers*/, unsigned int width, unsigned int height, double resolution, const db::Vector * /*shift_vector*/, const std::vector<int> * /*planes*/, const lay::Drawings * /*drawings*/)
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{
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m_resolution = resolution;
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m_width = width;
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m_height = height;
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}
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/**
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* @brief Set a plane
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*
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* This method is called from the redraw thread to transfer data for a certain plane.
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* The planes have been reserved before with init_plane ().
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*/
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virtual void set_plane (unsigned int n, const lay::CanvasPlane *plane) = 0;
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/**
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* @brief Set a plane for the drawing number d and index n within the drawing.
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*
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* This method is called from the redraw thread.
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*/
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virtual void set_drawing_plane (unsigned int d, unsigned int n, const lay::CanvasPlane *plane) = 0;
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/**
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* @brief Create a new, unassociated drawing plane
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*/
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virtual lay::CanvasPlane *create_drawing_plane () = 0;
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/**
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* @brief Initialize a drawing plane for drawing on plane number n
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*/
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virtual void initialize_plane (lay::CanvasPlane *plane, unsigned int n) = 0;
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/**
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* @brief Initialize a drawing plane for drawing on drawing d and plane number n
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*/
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virtual void initialize_plane (lay::CanvasPlane *plane, unsigned int d, unsigned int n) = 0;
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/**
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* @brief Lock the plane sets against changes by other threads
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*/
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void lock ()
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{
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m_mutex.lock ();
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}
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/**
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* @brief Unlock the plane sets against changes by other threads
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*/
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void unlock ()
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{
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m_mutex.unlock ();
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}
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/**
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* @brief Access to the mutex object
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*/
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QMutex &mutex ()
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{
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return m_mutex;
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}
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/**
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* @brief Get the resolution value
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*/
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double resolution () const
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{
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return m_resolution;
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}
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/**
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* @brief Get the canvas width
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*/
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unsigned int canvas_width () const
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{
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return m_width;
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}
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/**
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* @brief Get the canvas height
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*/
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unsigned int canvas_height () const
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{
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return m_height;
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}
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/**
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* @brief Provide the renderer
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*/
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virtual lay::Renderer *create_renderer () = 0;
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private:
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QMutex m_mutex;
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double m_resolution;
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unsigned int m_width, m_height;
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};
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class BitmapCanvasData
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{
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public:
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/**
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* @brief Constructor
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*/
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BitmapCanvasData ();
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/**
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* @brief Destructor
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*/
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~BitmapCanvasData ();
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/**
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* @brief Copy constructor
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*/
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BitmapCanvasData (const BitmapCanvasData &data)
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: m_width (0), m_height (0)
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{
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operator= (data);
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}
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/**
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* @brief Constructor from raw plan buffers
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*/
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BitmapCanvasData (const std::vector <lay::Bitmap *> &plane_buffers, const std::vector <std::vector <lay::Bitmap *> > &drawing_plane_buffers, unsigned int width, unsigned int height);
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/**
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* @brief Assignment
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*/
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BitmapCanvasData &operator= (const BitmapCanvasData &data);
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/**
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* @brief Fetches the data into the given buffers
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*/
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void fetch (std::vector <lay::Bitmap *> &plane_buffers, std::vector <std::vector <lay::Bitmap *> > &drawing_plane_buffers, unsigned int &width, unsigned int &height) const;
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/**
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* @brief Gets a value indicating whether we can fetch the data
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*/
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bool can_fetch (const std::vector <lay::Bitmap *> &plane_buffers, const std::vector <std::vector <lay::Bitmap *> > &drawing_plane_buffers, unsigned int width, unsigned int height) const;
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/**
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* @brief Swap with another data object
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*/
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void swap (BitmapCanvasData &other);
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private:
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void clear_planes ();
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static void assign (std::vector <lay::Bitmap *> &to, const std::vector <lay::Bitmap *> &from);
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static void assign(std::vector <std::vector <lay::Bitmap *> > &to, const std::vector <std::vector <lay::Bitmap *> > &from);
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std::vector <lay::Bitmap *> mp_plane_buffers;
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std::vector <std::vector <lay::Bitmap *> > mp_drawing_plane_buffers;
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unsigned int m_width, m_height;
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};
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class BitmapRedrawThreadCanvas
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: public RedrawThreadCanvas
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{
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public:
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/**
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* @brief Constructor
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*/
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BitmapRedrawThreadCanvas ();
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/**
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* @brief Destructor
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*/
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virtual ~BitmapRedrawThreadCanvas ();
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/**
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* @brief Returns true, if shifting is supported
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*/
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virtual bool shift_supported () const;
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/**
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* @brief Prepare the given number of planes
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*
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* This method is called from RedrawThread::start (), not from the
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* redraw thread.
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*/
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virtual void prepare (unsigned int nlayers, unsigned int width, unsigned int height, double resolution, const db::Vector *shift_vector, const std::vector<int> *planes, const lay::Drawings *drawings);
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/**
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* @brief Test a plane with the given index for emptiness
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*/
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bool is_plane_empty (unsigned int n);
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/**
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* @brief Set a plane
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*
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* This method is called from the redraw thread to transfer data for a certain plane.
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* The planes have been reserved before with prepare ().
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*/
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virtual void set_plane (unsigned int n, const lay::CanvasPlane *plane);
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/**
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* @brief Set a plane for the drawing number d and index n within the drawing.
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*
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* This method is called from the redraw thread.
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*/
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virtual void set_drawing_plane (unsigned int d, unsigned int n, const lay::CanvasPlane *plane);
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/**
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* @brief Create a new, unassociated drawing plane
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*/
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virtual lay::CanvasPlane *create_drawing_plane ();
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/**
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* @brief Initialize a drawing plane for drawing on plane number n
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*/
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virtual void initialize_plane (lay::CanvasPlane *plane, unsigned int n);
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/**
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* @brief Initialize a drawing plane for drawing on drawing d and plane number n
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*/
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virtual void initialize_plane (lay::CanvasPlane *plane, unsigned int d, unsigned int n);
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/**
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* @brief Provide the renderer
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*/
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virtual lay::Renderer *create_renderer ()
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{
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return new lay::BitmapRenderer (m_width, m_height, resolution ());
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}
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/**
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* @brief Transfer the content to an QImage
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*/
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void to_image (const std::vector <lay::ViewOp> &view_ops, const lay::DitherPattern &dp, const lay::LineStyles &ls, QColor background, QColor foreground, QColor active, const lay::Drawings *drawings, QImage &img, unsigned int width, unsigned int height);
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/**
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* @brief Gets the current bitmap data as a BitmapCanvasData object
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*/
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BitmapCanvasData store_data () const
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{
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return BitmapCanvasData (mp_plane_buffers, mp_drawing_plane_buffers, m_width, m_height);
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}
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/**
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* @brief Gets a value indicating whether we can restore the given data object
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*/
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bool can_restore_data (const BitmapCanvasData &data) const
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{
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return data.can_fetch (mp_plane_buffers, mp_drawing_plane_buffers, m_width, m_height);
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}
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/**
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* @brief Restores the data
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*/
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void restore_data (const BitmapCanvasData &data)
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{
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data.fetch (mp_plane_buffers, mp_drawing_plane_buffers, m_width, m_height);
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}
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private:
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void clear_planes ();
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std::vector <lay::Bitmap *> mp_plane_buffers;
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std::vector <std::vector <lay::Bitmap *> > mp_drawing_plane_buffers;
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unsigned int m_width, m_height;
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};
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}
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#endif
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