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201 lines
5.6 KiB
201 lines
5.6 KiB
14 years ago
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/* This file is part of KCachegrind.
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Copyright (C) 2002, 2003 Josef Weidendorfer <Josef.Weidendorfer@gmx.de>
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Adapted for the needs of kdesvn by Rajko Albrecht <ral@alwins-world.de>
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KCachegrind is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public
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License as published by the Free Software Foundation, version 2.
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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 GNU
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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; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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/**
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* A Widget for visualizing hierarchical metrics as areas.
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* The API is similar to QListView.
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*
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* This file defines the following classes:
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* DrawParams, RectDrawing, TreeMapItem, TreeMapWidget
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*
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* DrawParams/RectDrawing allows reusing of TreeMap drawing
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* functions in other widgets.
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*/
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#ifndef DRAWPARAMS_H
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#define DRAWPARAMS_H
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#include <qstring.h>
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#include <qwidget.h>
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#include <qpixmap.h>
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#include <qptrlist.h>
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#include <qvaluevector.h>
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#include <qcolor.h>
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#include <qapplication.h>
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#include <qstringlist.h>
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class QPopupMenu;
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class QString;
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class KConfigGroup;
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/**
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* Drawing parameters for an object.
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* A Helper Interface for RectDrawing.
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*/
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class DrawParams
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{
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public:
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/**
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* Positions for drawing into a rectangle.
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*
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* The specified position assumes no rotation.
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* If there is more than one text for one position, it is put
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* nearer to the center of the item.
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*
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* Drawing at top positions cuts free space from top,
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* drawing at bottom positions cuts from bottom.
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* Default usually gives positions clockwise according to field number.
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*/
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enum Position { TopLeft, TopCenter, TopRight,
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BottomLeft, BottomCenter, BottomRight,
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Default, Unknown};
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// no constructor as this is an abstract class
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virtual ~DrawParams() {}
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virtual QString text(int) const = 0;
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virtual QPixmap pixmap(int) const = 0;
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virtual Position position(int) const = 0;
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// 0: no limit, negative: leave at least -maxLines() free
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virtual int maxLines(int) const { return 0; }
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virtual int fieldCount() const { return 0; }
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virtual QColor backColor() const { return Qt::white; }
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virtual const QFont& font() const = 0;
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virtual bool selected() const { return false; }
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virtual bool current() const { return false; }
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virtual bool shaded() const { return true; }
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virtual bool rotated() const { return false; }
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virtual bool drawFrame() const { return true; }
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};
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/*
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* DrawParam with attributes stored
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*/
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class StoredDrawParams: public DrawParams
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{
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public:
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StoredDrawParams();
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StoredDrawParams(QColor c,
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bool selected = false, bool current = false);
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// getters
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QString text(int) const;
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QPixmap pixmap(int) const;
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Position position(int) const;
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int maxLines(int) const;
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int fieldCount() const { return _field.size(); }
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QColor backColor() const { return _backColor; }
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bool selected() const { return _selected; }
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bool current() const { return _current; }
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bool shaded() const { return _shaded; }
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bool rotated() const { return _rotated; }
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bool drawFrame() const { return _drawFrame; }
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const QFont& font() const;
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// attribute setters
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void setField(int f, QString t, QPixmap pm = QPixmap(),
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Position p = Default, int maxLines = 0);
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void setText(int f, QString);
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void setPixmap(int f, QPixmap);
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void setPosition(int f, Position);
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void setMaxLines(int f, int);
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void setBackColor(QColor c) { _backColor = c; }
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void setSelected(bool b) { _selected = b; }
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void setCurrent(bool b) { _current = b; }
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void setShaded(bool b) { _shaded = b; }
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void setRotated(bool b) { _rotated = b; }
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void drawFrame(bool b) { _drawFrame = b; }
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protected:
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QColor _backColor;
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bool _selected :1;
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bool _current :1;
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bool _shaded :1;
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bool _rotated :1;
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bool _drawFrame :1;
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private:
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// resize field array if needed to allow to access field <f>
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void ensureField(int f);
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struct Field {
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QString text;
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QPixmap pix;
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Position pos;
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int maxLines;
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};
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QValueVector<Field> _field;
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};
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/* State for drawing on a rectangle.
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*
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* Following drawing functions are provided:
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* - background drawing with shading and 3D frame
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* - successive pixmap/text drawing at various positions with wrap-around
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* optimized for minimal space usage (e.g. if a text is drawn at top right
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* after text on top left, the same line is used if space allows)
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*
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*/
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class RectDrawing
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{
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public:
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RectDrawing(QRect);
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~RectDrawing();
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// The default DrawParams object used.
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DrawParams* drawParams();
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// we take control over the given object (i.e. delete at destruction)
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void setDrawParams(DrawParams*);
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// draw on a given QPainter, use this class as info provider per default
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void drawBack(QPainter*, DrawParams* dp = 0);
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/* Draw field at position() from pixmap()/text() with maxLines().
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* Returns true if something was drawn
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*/
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bool drawField(QPainter*, int f, DrawParams* dp = 0);
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// resets rectangle for free space
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void setRect(QRect);
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// Returns the rectangle area still free of text/pixmaps after
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// a number of drawText() calls.
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QRect remainingRect(DrawParams* dp = 0);
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private:
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int _usedTopLeft, _usedTopCenter, _usedTopRight;
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int _usedBottomLeft, _usedBottomCenter, _usedBottomRight;
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QRect _rect;
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// temporary
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int _fontHeight;
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QFontMetrics* _fm;
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DrawParams* _dp;
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};
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#endif
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