///////////////////////////////////////////////////////////////////////////////
// Name: wx/renderer.h
// Purpose: wxRendererNative class declaration
// Author: Vadim Zeitlin
// Modified by:
// Created: 20.07.2003
// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
/*
Renderers are used in wxWidgets for two similar but different things:
(a) wxUniversal uses them to draw everything, i.e. all the control
(b) all the native ports use them to draw generic controls only
wxUniversal needs more functionality than what is included in the base class
as it needs to draw stuff like scrollbars which are never going to be
generic. So we put the bare minimum needed by the native ports here and the
full wxRenderer class is declared in wx/univ/renderer.h and is only used by
wxUniveral (although note that native ports can load wxRenderer objects from
theme DLLs and use them as wxRendererNative ones, of course).
*/
#ifndef _WX_RENDERER_H_
#define _WX_RENDERER_H_
class WXDLLIMPEXP_FWD_CORE wxDC;
class WXDLLIMPEXP_FWD_CORE wxWindow;
#include "wx/gdicmn.h" // for wxPoint, wxSize
#include "wx/colour.h"
#include "wx/font.h"
#include "wx/bitmap.h"
#include "wx/string.h"
// some platforms have their own renderers, others use the generic one
#if defined(__WXMSW__) || ( defined(__WXMAC__) && wxOSX_USE_COCOA_OR_CARBON ) || defined(__WXGTK__)
#define wxHAS_NATIVE_RENDERER
#else
#undef wxHAS_NATIVE_RENDERER
#endif
// only MSW and OS X currently provides DrawTitleBarBitmap() method
#if defined(__WXMSW__) || (defined(__WXMAC__) && wxUSE_LIBPNG && wxUSE_IMAGE)
#define wxHAS_DRAW_TITLE_BAR_BITMAP
#endif
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
// control state flags used in wxRenderer and wxColourScheme
enum
{
wxCONTROL_NONE = 0x00000000, // absence of any other flags
wxCONTROL_DISABLED = 0x00000001, // control is disabled
wxCONTROL_FOCUSED = 0x00000002, // currently has keyboard focus
wxCONTROL_PRESSED = 0x00000004, // (button) is pressed
wxCONTROL_SPECIAL = 0x00000008, // control-specific bit:
wxCONTROL_ISDEFAULT = wxCONTROL_SPECIAL, // only for the buttons
wxCONTROL_ISSUBMENU = wxCONTROL_SPECIAL, // only for the menu items
wxCONTROL_EXPANDED = wxCONTROL_SPECIAL, // only for the tree items
wxCONTROL_SIZEGRIP = wxCONTROL_SPECIAL, // only for the status bar panes
wxCONTROL_FLAT = wxCONTROL_SPECIAL, // checkboxes only: flat border
wxCONTROL_CELL = wxCONTROL_SPECIAL, // only for item selection rect
wxCONTROL_CURRENT = 0x00000010, // mouse is currently over the control
wxCONTROL_SELECTED = 0x00000020, // selected item in e.g. listbox
wxCONTROL_CHECKED = 0x00000040, // (check/radio button) is checked
wxCONTROL_CHECKABLE = 0x00000080, // (menu) item can be checked
wxCONTROL_UNDETERMINED = wxCONTROL_CHECKABLE, // (check) undetermined state
wxCONTROL_FLAGS_MASK = 0x000000ff,
// this is a pseudo flag not used directly by wxRenderer but rather by some
// controls internally
wxCONTROL_DIRTY = 0x80000000
};
// title bar buttons supported by DrawTitleBarBitmap()
//
// NB: they have the same values as wxTOPLEVEL_BUTTON_XXX constants in
// wx/univ/toplevel.h as they really represent the same things
enum wxTitleBarButton
{
wxTITLEBAR_BUTTON_CLOSE = 0x01000000,
wxTITLEBAR_BUTTON_MAXIMIZE = 0x02000000,
wxTITLEBAR_BUTTON_ICONIZE = 0x04000000,
wxTITLEBAR_BUTTON_RESTORE = 0x08000000,
wxTITLEBAR_BUTTON_HELP = 0x10000000
};
// ----------------------------------------------------------------------------
// helper structs
// ----------------------------------------------------------------------------
// wxSplitterWindow parameters
struct WXDLLIMPEXP_CORE wxSplitterRenderParams
{
// the only way to initialize this struct is by using this ctor
wxSplitterRenderParams(wxCoord widthSash_, wxCoord border_, bool isSens_)
: widthSash(widthSash_), border(border_), isHotSensitive(isSens_)
{
}
// the width of the splitter sash
const wxCoord widthSash;
// the width of the border of the splitter window
const wxCoord border;
// true if the splitter changes its appearance when the mouse is over it
const bool isHotSensitive;
};
// extra optional parameters for DrawHeaderButton
struct WXDLLIMPEXP_CORE wxHeaderButtonParams
{
wxHeaderButtonParams()
: m_labelAlignment(wxALIGN_LEFT)
{ }
wxColour m_arrowColour;
wxColour m_selectionColour;
wxString m_labelText;
wxFont m_labelFont;
wxColour m_labelColour;
wxBitmap m_labelBitmap;
int m_labelAlignment;
};
enum wxHeaderSortIconType
{
wxHDR_SORT_ICON_NONE, // Header button has no sort arrow
wxHDR_SORT_ICON_UP, // Header button an up sort arrow icon
wxHDR_SORT_ICON_DOWN // Header button a down sort arrow icon
};
// wxRendererNative interface version
struct WXDLLIMPEXP_CORE wxRendererVersion
{
wxRendererVersion(int version_, int age_) : version(version_), age(age_) { }
// default copy ctor, assignment operator and dtor are ok
// the current version and age of wxRendererNative interface: different
// versions are incompatible (in both ways) while the ages inside the same
// version are upwards compatible, i.e. the version of the renderer must
// match the version of the main program exactly while the age may be
// highergreater or equal to it
//
// NB: don't forget to increment age after adding any new virtual function!
enum
{
Current_Version = 1,
Current_Age = 5
};
// check if the given version is compatible with the current one
static bool IsCompatible(const wxRendererVersion& ver)
{
return ver.version == Current_Version && ver.age >= Current_Age;
}
const int version;
const int age;
};
// ----------------------------------------------------------------------------
// wxRendererNative: abstracts drawing methods needed by the native controls
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_CORE wxRendererNative
{
public:
// drawing functions
// -----------------
/*
Note that all these functions don't, and shouldn't, change any
parameters of wxDC passed to them, i.e. pens, brushes or colours.
Their implementation must use wxDCXXXChanger classes instead of
calling wxDC::SetXXX() directly to ensure this.
*/
// draw the header control button (used by wxListCtrl) Returns optimal
// width for the label contents.
virtual int DrawHeaderButton(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0,
wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
wxHeaderButtonParams* params=NULL) = 0;
// Draw the contents of a header control button (label, sort arrows, etc.)
// Normally only called by DrawHeaderButton.
virtual int DrawHeaderButtonContents(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0,
wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
wxHeaderButtonParams* params=NULL) = 0;
// Returns the default height of a header button, either a fixed platform
// height if available, or a generic height based on the window's font.
virtual int GetHeaderButtonHeight(wxWindow *win) = 0;
// Returns the margin on left and right sides of header button's label
virtual int GetHeaderButtonMargin(wxWindow *win) = 0;
// draw the expanded/collapsed icon for a tree control item
virtual void DrawTreeItemButton(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0) = 0;
// draw the border for sash window: this border must be such that the sash
// drawn by DrawSash() blends into it well
virtual void DrawSplitterBorder(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0) = 0;
// draw a (vertical) sash
virtual void DrawSplitterSash(wxWindow *win,
wxDC& dc,
const wxSize& size,
wxCoord position,
wxOrientation orient,
int flags = 0) = 0;
// draw a combobox dropdown button
//
// flags may use wxCONTROL_PRESSED and wxCONTROL_CURRENT
virtual void DrawComboBoxDropButton(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0) = 0;
// draw a dropdown arrow
//
// flags may use wxCONTROL_PRESSED and wxCONTROL_CURRENT
virtual void DrawDropArrow(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0) = 0;
// draw check button
//
// flags may use wxCONTROL_CHECKED, wxCONTROL_UNDETERMINED and wxCONTROL_CURRENT
virtual void DrawCheckBox(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0) = 0;
// draw check mark
//
// flags may use wxCONTROL_DISABLED
virtual void DrawCheckMark(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0) = 0;
// Returns the default size of a check box.
virtual wxSize GetCheckBoxSize(wxWindow *win, int flags = 0) = 0;
// Returns the default size of a check mark.
virtual wxSize GetCheckMarkSize(wxWindow *win) = 0;
// Returns the default size of a expander.
virtual wxSize GetExpanderSize(wxWindow *win) = 0;
// draw blank button
//
// flags may use wxCONTROL_PRESSED, wxCONTROL_CURRENT and wxCONTROL_ISDEFAULT
virtual void DrawPushButton(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0) = 0;
// draw collapse button
//
// flags may use wxCONTROL_CHECKED, wxCONTROL_UNDETERMINED and wxCONTROL_CURRENT
virtual void DrawCollapseButton(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0) = 0;
// Returns the default size of a collapse button
virtual wxSize GetCollapseButtonSize(wxWindow *win, wxDC& dc) = 0;
// draw rectangle indicating that an item in e.g. a list control
// has been selected or focused
//
// flags may use
// wxCONTROL_SELECTED (item is selected, e.g. draw background)
// wxCONTROL_CURRENT (item is the current item, e.g. dotted border)
// wxCONTROL_FOCUSED (the whole control has focus, e.g. blue background vs. grey otherwise)
virtual void DrawItemSelectionRect(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0) = 0;
// draw the focus rectangle around the label contained in the given rect
//
// only wxCONTROL_SELECTED makes sense in flags here
virtual void DrawFocusRect(wxWindow* win,
wxDC& dc,
const wxRect& rect,
int flags = 0) = 0;
// Draw a native wxChoice
virtual void DrawChoice(wxWindow* win,
wxDC& dc,
const wxRect& rect,
int flags = 0) = 0;
// Draw a native wxComboBox
virtual void DrawComboBox(wxWindow* win,
wxDC& dc,
const wxRect& rect,
int flags = 0) = 0;
// Draw a native wxTextCtrl frame
virtual void DrawTextCtrl(wxWindow* win,
wxDC& dc,
const wxRect& rect,
int flags = 0) = 0;
// Draw a native wxRadioButton bitmap
virtual void DrawRadioBitmap(wxWindow* win,
wxDC& dc,
const wxRect& rect,
int flags = 0) = 0;
#ifdef wxHAS_DRAW_TITLE_BAR_BITMAP
// Draw one of the standard title bar buttons
//
// This is currently implemented only for MSW and OS X (for the close
// button only) because there is no way to render standard title bar
// buttons under the other platforms, the best can be done is to use normal
// (only) images which wxArtProvider provides for wxART_HELP and
// wxART_CLOSE (but not any other title bar buttons)
//
// NB: make sure PNG handler is enabled if using this function under OS X
virtual void DrawTitleBarBitmap(wxWindow *win,
wxDC& dc,
const wxRect& rect,
wxTitleBarButton button,
int flags = 0) = 0;
#endif // wxHAS_DRAW_TITLE_BAR_BITMAP
// Draw a gauge with native style like a wxGauge would display.
//
// wxCONTROL_SPECIAL flag must be used for drawing vertical gauges.
virtual void DrawGauge(wxWindow* win,
wxDC& dc,
const wxRect& rect,
int value,
int max,
int flags = 0) = 0;
// Draw text using the appropriate color for normal and selected states.
virtual void DrawItemText(wxWindow* win,
wxDC& dc,
const wxString& text,
const wxRect& rect,
int align = wxALIGN_LEFT | wxALIGN_TOP,
int flags = 0,
wxEllipsizeMode ellipsizeMode = wxELLIPSIZE_END) = 0;
// geometry functions
// ------------------
// get the splitter parameters: the x field of the returned point is the
// sash width and the y field is the border width
virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win) = 0;
// pseudo constructors
// -------------------
// return the currently used renderer
static wxRendererNative& Get();
// return the generic implementation of the renderer
static wxRendererNative& GetGeneric();
// return the default (native) implementation for this platform
static wxRendererNative& GetDefault();
// changing the global renderer
// ----------------------------
#if wxUSE_DYNLIB_CLASS
// load the renderer from the specified DLL, the returned pointer must be
// deleted by caller if not NULL when it is not used any more
static wxRendererNative *Load(const wxString& name);
#endif // wxUSE_DYNLIB_CLASS
// set the renderer to use, passing NULL reverts to using the default
// renderer
//
// return the previous renderer used with Set() or NULL if none
static wxRendererNative *Set(wxRendererNative *renderer);
// miscellaneous stuff
// -------------------
// this function is used for version checking: Load() refuses to load any
// DLLs implementing an older or incompatible version; it should be
// implemented simply by returning wxRendererVersion::Current_XXX values
virtual wxRendererVersion GetVersion() const = 0;
// virtual dtor for any base class
virtual ~wxRendererNative();
};
// ----------------------------------------------------------------------------
// wxDelegateRendererNative: allows reuse of renderers code
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_CORE wxDelegateRendererNative : public wxRendererNative
{
public:
wxDelegateRendererNative()
: m_rendererNative(GetGeneric()) { }
wxDelegateRendererNative(wxRendererNative& rendererNative)
: m_rendererNative(rendererNative) { }
virtual int DrawHeaderButton(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0,
wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
wxHeaderButtonParams* params = NULL) wxOVERRIDE
{ return m_rendererNative.DrawHeaderButton(win, dc, rect, flags, sortArrow, params); }
virtual int DrawHeaderButtonContents(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0,
wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
wxHeaderButtonParams* params = NULL) wxOVERRIDE
{ return m_rendererNative.DrawHeaderButtonContents(win, dc, rect, flags, sortArrow, params); }
virtual int GetHeaderButtonHeight(wxWindow *win) wxOVERRIDE
{ return m_rendererNative.GetHeaderButtonHeight(win); }
virtual int GetHeaderButtonMargin(wxWindow *win) wxOVERRIDE
{ return m_rendererNative.GetHeaderButtonMargin(win); }
virtual void DrawTreeItemButton(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0) wxOVERRIDE
{ m_rendererNative.DrawTreeItemButton(win, dc, rect, flags); }
virtual void DrawSplitterBorder(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0) wxOVERRIDE
{ m_rendererNative.DrawSplitterBorder(win, dc, rect, flags); }
virtual void DrawSplitterSash(wxWindow *win,
wxDC& dc,
const wxSize& size,
wxCoord position,
wxOrientation orient,
int flags = 0) wxOVERRIDE
{ m_rendererNative.DrawSplitterSash(win, dc, size,
position, orient, flags); }
virtual void DrawComboBoxDropButton(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0) wxOVERRIDE
{ m_rendererNative.DrawComboBoxDropButton(win, dc, rect, flags); }
virtual void DrawDropArrow(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0) wxOVERRIDE
{ m_rendererNative.DrawDropArrow(win, dc, rect, flags); }
virtual void DrawCheckBox(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0) wxOVERRIDE
{ m_rendererNative.DrawCheckBox( win, dc, rect, flags ); }
virtual void DrawCheckMark(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0) wxOVERRIDE
{ m_rendererNative.DrawCheckMark( win, dc, rect, flags ); }
virtual wxSize GetCheckBoxSize(wxWindow *win, int flags = 0) wxOVERRIDE
{ return m_rendererNative.GetCheckBoxSize(win, flags); }
virtual wxSize GetCheckMarkSize(wxWindow *win) wxOVERRIDE
{ return m_rendererNative.GetCheckMarkSize(win); }
virtual wxSize GetExpanderSize(wxWindow *win) wxOVERRIDE
{ return m_rendererNative.GetExpanderSize(win); }
virtual void DrawPushButton(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0) wxOVERRIDE
{ m_rendererNative.DrawPushButton( win, dc, rect, flags ); }
virtual void DrawCollapseButton(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0) wxOVERRIDE
{ m_rendererNative.DrawCollapseButton(win, dc, rect, flags); }
virtual wxSize GetCollapseButtonSize(wxWindow *win, wxDC& dc) wxOVERRIDE
{ return m_rendererNative.GetCollapseButtonSize(win, dc); }
virtual void DrawItemSelectionRect(wxWindow *win,
wxDC& dc,
const wxRect& rect,
int flags = 0) wxOVERRIDE
{ m_rendererNative.DrawItemSelectionRect( win, dc, rect, flags ); }
virtual void DrawFocusRect(wxWindow* win,
wxDC& dc,
const wxRect& rect,
int flags = 0) wxOVERRIDE
{ m_rendererNative.DrawFocusRect( win, dc, rect, flags ); }
virtual void DrawChoice(wxWindow* win,
wxDC& dc,
const wxRect& rect,
int flags = 0) wxOVERRIDE
{ m_rendererNative.DrawChoice( win, dc, rect, flags); }
virtual void DrawComboBox(wxWindow* win,
wxDC& dc,
const wxRect& rect,
int flags = 0) wxOVERRIDE
{ m_rendererNative.DrawComboBox( win, dc, rect, flags); }
virtual void DrawTextCtrl(wxWindow* win,
wxDC& dc,
const wxRect& rect,
int flags = 0) wxOVERRIDE
{ m_rendererNative.DrawTextCtrl( win, dc, rect, flags); }
virtual void DrawRadioBitmap(wxWindow* win,
wxDC& dc,
const wxRect& rect,
int flags = 0) wxOVERRIDE
{ m_rendererNative.DrawRadioBitmap(win, dc, rect, flags); }
#ifdef wxHAS_DRAW_TITLE_BAR_BITMAP
virtual void DrawTitleBarBitmap(wxWindow *win,
wxDC& dc,
const wxRect& rect,
wxTitleBarButton button,
int flags = 0) wxOVERRIDE
{ m_rendererNative.DrawTitleBarBitmap(win, dc, rect, button, flags); }
#endif // wxHAS_DRAW_TITLE_BAR_BITMAP
virtual void DrawGauge(wxWindow* win,
wxDC& dc,
const wxRect& rect,
int value,
int max,
int flags = 0) wxOVERRIDE
{ m_rendererNative.DrawGauge(win, dc, rect, value, max, flags); }
virtual void DrawItemText(wxWindow* win,
wxDC& dc,
const wxString& text,
const wxRect& rect,
int align = wxALIGN_LEFT | wxALIGN_TOP,
int flags = 0,
wxEllipsizeMode ellipsizeMode = wxELLIPSIZE_END) wxOVERRIDE
{ m_rendererNative.DrawItemText(win, dc, text, rect, align, flags, ellipsizeMode); }
virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win) wxOVERRIDE
{ return m_rendererNative.GetSplitterParams(win); }
virtual wxRendererVersion GetVersion() const wxOVERRIDE
{ return m_rendererNative.GetVersion(); }
protected:
wxRendererNative& m_rendererNative;
wxDECLARE_NO_COPY_CLASS(wxDelegateRendererNative);
};
// ----------------------------------------------------------------------------
// inline functions implementation
// ----------------------------------------------------------------------------
#ifndef wxHAS_NATIVE_RENDERER
// default native renderer is the generic one then
/* static */ inline
wxRendererNative& wxRendererNative::GetDefault()
{
return GetGeneric();
}
#endif // !wxHAS_NATIVE_RENDERER
#endif // _WX_RENDERER_H_
