96de24d1bb
Previously columns using a set of predetermined values used plain wxGridCellStringRenderer, which didn't allow to determine their best size efficiently, as wxGrid had to iterate over all the rows of the table, even if they only took a couple of possible values. Add wxGridCellChoiceRenderer (refactoring wxGridCellEnumRenderer to extract the common code from it in the process) which implements GetMaxBestSize() by just finding the best size of all of these values, which is much faster for large grids. This does result in a change in behaviour, as the column now adapts to its "theoretical" best size and not just the size of the values actually shown in it, but this seems to be a worthwhile trade-off and could even be seen as an advantage, as editing a cell won't make its value overflow the auto-sized column width any more, as it is wide enough to show any of the column values.
344 lines
11 KiB
C++
344 lines
11 KiB
C++
///////////////////////////////////////////////////////////////////////////
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// Name: wx/generic/gridctrl.h
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// Purpose: wxGrid controls
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// Author: Paul Gammans, Roger Gammans
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// Modified by:
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// Created: 11/04/2001
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// Copyright: (c) The Computer Surgery (paul@compsurg.co.uk)
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_GENERIC_GRIDCTRL_H_
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#define _WX_GENERIC_GRIDCTRL_H_
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#include "wx/grid.h"
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#if wxUSE_GRID
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#define wxGRID_VALUE_CHOICEINT wxT("choiceint")
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#define wxGRID_VALUE_DATETIME wxT("datetime")
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// the default renderer for the cells containing string data
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class WXDLLIMPEXP_ADV wxGridCellStringRenderer : public wxGridCellRenderer
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{
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public:
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// draw the string
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virtual void Draw(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc,
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const wxRect& rect,
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int row, int col,
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bool isSelected) wxOVERRIDE;
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// return the string extent
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virtual wxSize GetBestSize(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc,
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int row, int col) wxOVERRIDE;
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virtual wxGridCellRenderer *Clone() const wxOVERRIDE
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{ return new wxGridCellStringRenderer; }
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protected:
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// set the text colours before drawing
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void SetTextColoursAndFont(const wxGrid& grid,
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const wxGridCellAttr& attr,
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wxDC& dc,
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bool isSelected);
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// calc the string extent for given string/font
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wxSize DoGetBestSize(const wxGridCellAttr& attr,
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wxDC& dc,
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const wxString& text);
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};
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// the default renderer for the cells containing numeric (long) data
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class WXDLLIMPEXP_ADV wxGridCellNumberRenderer : public wxGridCellStringRenderer
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{
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public:
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// draw the string right aligned
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virtual void Draw(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc,
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const wxRect& rect,
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int row, int col,
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bool isSelected) wxOVERRIDE;
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virtual wxSize GetBestSize(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc,
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int row, int col) wxOVERRIDE;
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virtual wxGridCellRenderer *Clone() const wxOVERRIDE
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{ return new wxGridCellNumberRenderer; }
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protected:
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wxString GetString(const wxGrid& grid, int row, int col);
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};
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class WXDLLIMPEXP_ADV wxGridCellFloatRenderer : public wxGridCellStringRenderer
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{
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public:
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wxGridCellFloatRenderer(int width = -1,
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int precision = -1,
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int format = wxGRID_FLOAT_FORMAT_DEFAULT);
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// get/change formatting parameters
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int GetWidth() const { return m_width; }
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void SetWidth(int width) { m_width = width; m_format.clear(); }
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int GetPrecision() const { return m_precision; }
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void SetPrecision(int precision) { m_precision = precision; m_format.clear(); }
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int GetFormat() const { return m_style; }
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void SetFormat(int format) { m_style = format; m_format.clear(); }
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// draw the string right aligned with given width/precision
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virtual void Draw(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc,
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const wxRect& rect,
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int row, int col,
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bool isSelected) wxOVERRIDE;
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virtual wxSize GetBestSize(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc,
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int row, int col) wxOVERRIDE;
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// parameters string format is "width[,precision[,format]]"
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// with format being one of f|e|g|E|F|G
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virtual void SetParameters(const wxString& params) wxOVERRIDE;
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virtual wxGridCellRenderer *Clone() const wxOVERRIDE;
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protected:
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wxString GetString(const wxGrid& grid, int row, int col);
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private:
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// formatting parameters
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int m_width,
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m_precision;
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int m_style;
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wxString m_format;
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};
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// renderer for boolean fields
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class WXDLLIMPEXP_ADV wxGridCellBoolRenderer : public wxGridCellRenderer
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{
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public:
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// draw a check mark or nothing
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virtual void Draw(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc,
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const wxRect& rect,
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int row, int col,
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bool isSelected) wxOVERRIDE;
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// return the checkmark size
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virtual wxSize GetBestSize(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc,
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int row, int col) wxOVERRIDE;
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virtual wxSize GetMaxBestSize(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc) wxOVERRIDE;
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virtual wxGridCellRenderer *Clone() const wxOVERRIDE
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{ return new wxGridCellBoolRenderer; }
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};
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#if wxUSE_DATETIME
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#include "wx/datetime.h"
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// renderer for the cells containing dates only, without time component
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class WXDLLIMPEXP_ADV wxGridCellDateRenderer : public wxGridCellStringRenderer
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{
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public:
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explicit wxGridCellDateRenderer(const wxString& outformat = wxString());
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wxGridCellDateRenderer(const wxGridCellDateRenderer& other)
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: m_oformat(other.m_oformat),
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m_tz(other.m_tz)
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{
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}
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// draw the string right aligned
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virtual void Draw(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc,
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const wxRect& rect,
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int row, int col,
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bool isSelected) wxOVERRIDE;
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virtual wxSize GetBestSize(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc,
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int row, int col) wxOVERRIDE;
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virtual wxSize GetMaxBestSize(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc) wxOVERRIDE;
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virtual wxGridCellRenderer *Clone() const wxOVERRIDE;
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// output strptime()-like format string
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virtual void SetParameters(const wxString& params) wxOVERRIDE;
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protected:
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wxString GetString(const wxGrid& grid, int row, int col);
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virtual bool Parse(const wxString& text, wxDateTime& result);
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wxString m_oformat;
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wxDateTime::TimeZone m_tz;
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};
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// the default renderer for the cells containing times and dates
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class WXDLLIMPEXP_ADV wxGridCellDateTimeRenderer : public wxGridCellDateRenderer
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{
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public:
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wxGridCellDateTimeRenderer(const wxString& outformat = wxDefaultDateTimeFormat,
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const wxString& informat = wxDefaultDateTimeFormat);
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wxGridCellDateTimeRenderer(const wxGridCellDateTimeRenderer& other)
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: wxGridCellDateRenderer(other),
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m_iformat(other.m_iformat),
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m_dateDef(other.m_dateDef)
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{
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}
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virtual wxGridCellRenderer *Clone() const wxOVERRIDE;
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protected:
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virtual bool Parse(const wxString& text, wxDateTime& result) wxOVERRIDE;
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wxString m_iformat;
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wxDateTime m_dateDef;
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};
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#endif // wxUSE_DATETIME
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// Renderer for fields taking one of a limited set of values: this is the same
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// as the renderer for strings, except that it can implement GetMaxBestSize().
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class WXDLLIMPEXP_ADV wxGridCellChoiceRenderer : public wxGridCellStringRenderer
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{
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public:
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wxGridCellChoiceRenderer() { }
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virtual wxSize GetMaxBestSize(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc) wxOVERRIDE;
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// Parameters string is a comma-separated list of values.
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virtual void SetParameters(const wxString& params) wxOVERRIDE;
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virtual wxGridCellRenderer *Clone() const wxOVERRIDE
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{
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return new wxGridCellChoiceRenderer(*this);
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}
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protected:
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wxGridCellChoiceRenderer(const wxGridCellChoiceRenderer& other)
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: m_choices(other.m_choices)
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{
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}
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wxArrayString m_choices;
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};
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// renders a number using the corresponding text string
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class WXDLLIMPEXP_ADV wxGridCellEnumRenderer : public wxGridCellChoiceRenderer
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{
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public:
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wxGridCellEnumRenderer( const wxString& choices = wxEmptyString );
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// draw the string right aligned
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virtual void Draw(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc,
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const wxRect& rect,
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int row, int col,
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bool isSelected) wxOVERRIDE;
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virtual wxSize GetBestSize(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc,
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int row, int col) wxOVERRIDE;
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virtual wxGridCellRenderer *Clone() const wxOVERRIDE;
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protected:
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wxString GetString(const wxGrid& grid, int row, int col);
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};
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class WXDLLIMPEXP_ADV wxGridCellAutoWrapStringRenderer : public wxGridCellStringRenderer
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{
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public:
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wxGridCellAutoWrapStringRenderer() : wxGridCellStringRenderer() { }
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virtual void Draw(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc,
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const wxRect& rect,
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int row, int col,
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bool isSelected) wxOVERRIDE;
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virtual wxSize GetBestSize(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc,
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int row, int col) wxOVERRIDE;
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virtual int GetBestHeight(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc,
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int row, int col,
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int width) wxOVERRIDE;
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virtual int GetBestWidth(wxGrid& grid,
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wxGridCellAttr& attr,
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wxDC& dc,
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int row, int col,
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int height) wxOVERRIDE;
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virtual wxGridCellRenderer *Clone() const wxOVERRIDE
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{ return new wxGridCellAutoWrapStringRenderer; }
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private:
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wxArrayString GetTextLines( wxGrid& grid,
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wxDC& dc,
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const wxGridCellAttr& attr,
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const wxRect& rect,
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int row, int col);
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// Helper methods of GetTextLines()
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// Break a single logical line of text into several physical lines, all of
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// which are added to the lines array. The lines are broken at maxWidth and
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// the dc is used for measuring text extent only.
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void BreakLine(wxDC& dc,
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const wxString& logicalLine,
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wxCoord maxWidth,
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wxArrayString& lines);
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// Break a word, which is supposed to be wider than maxWidth, into several
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// lines, which are added to lines array and the last, incomplete, of which
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// is returned in line output parameter.
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//
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// Returns the width of the last line.
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wxCoord BreakWord(wxDC& dc,
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const wxString& word,
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wxCoord maxWidth,
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wxArrayString& lines,
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wxString& line);
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};
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#endif // wxUSE_GRID
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#endif // _WX_GENERIC_GRIDCTRL_H_
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