3f66f6a5b3
This keyword is not expanded by Git which means it's not replaced with the correct revision value in the releases made using git-based scripts and it's confusing to have lines with unexpanded "$Id$" in the released files. As expanding them with Git is not that simple (it could be done with git archive and export-subst attribute) and there are not many benefits in having them in the first place, just remove all these lines. If nothing else, this will make an eventual transition to Git simpler. Closes #14487. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74602 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
590 lines
21 KiB
Objective-C
590 lines
21 KiB
Objective-C
/////////////////////////////////////////////////////////////////////////////
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// Name: renderer.h
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// Purpose: interface of wxRendererNative
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// Author: wxWidgets team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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/**
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@anchor wxCONTROL_FLAGS
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The following rendering flags are defined for wxRendererNative:
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*/
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enum
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{
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/** Control is disabled. */
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wxCONTROL_DISABLED = 0x00000001,
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/** Currently has keyboard focus. */
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wxCONTROL_FOCUSED = 0x00000002,
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/** (Button) is pressed. */
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wxCONTROL_PRESSED = 0x00000004,
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/** Control-specific bit. */
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wxCONTROL_SPECIAL = 0x00000008,
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/** Only for the buttons. */
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wxCONTROL_ISDEFAULT = wxCONTROL_SPECIAL,
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/** Only for the menu items. */
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wxCONTROL_ISSUBMENU = wxCONTROL_SPECIAL,
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/** Only for the tree items. */
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wxCONTROL_EXPANDED = wxCONTROL_SPECIAL,
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/** Only for the status bar panes. */
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wxCONTROL_SIZEGRIP = wxCONTROL_SPECIAL,
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/** Checkboxes only: flat border. */
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wxCONTROL_FLAT = wxCONTROL_SPECIAL,
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/** Mouse is currently over the control. */
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wxCONTROL_CURRENT = 0x00000010,
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/** Selected item in e.g.\ listbox. */
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wxCONTROL_SELECTED = 0x00000020,
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/** (Check/radio button) is checked. */
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wxCONTROL_CHECKED = 0x00000040,
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/** (Menu) item can be checked. */
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wxCONTROL_CHECKABLE = 0x00000080,
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/** (Check) undetermined state. */
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wxCONTROL_UNDETERMINED = wxCONTROL_CHECKABLE
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};
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/**
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Title bar buttons supported by wxRendererNative::DrawTitleBarBitmap().
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*/
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enum wxTitleBarButton
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{
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wxTITLEBAR_BUTTON_CLOSE = 0x01000000,
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wxTITLEBAR_BUTTON_MAXIMIZE = 0x02000000,
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wxTITLEBAR_BUTTON_ICONIZE = 0x04000000,
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wxTITLEBAR_BUTTON_RESTORE = 0x08000000,
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wxTITLEBAR_BUTTON_HELP = 0x10000000
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};
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/**
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@struct wxSplitterRenderParams
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This is just a simple @c struct used as a return value of
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wxRendererNative::GetSplitterParams().
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It doesn't have any methods and all of its fields are constant, so they can
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only be examined but not modified.
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@library{wxcore}
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@category{gdi}
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*/
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struct wxSplitterRenderParams
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{
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/**
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The only way to initialize this struct is by using this ctor.
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*/
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wxSplitterRenderParams(wxCoord widthSash_, wxCoord border_, bool isSens_);
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/**
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The width of the border drawn by the splitter inside it, may be 0.
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*/
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const wxCoord border;
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/**
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@true if the sash changes appearance when the mouse passes over it, @false
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otherwise.
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*/
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const bool isHotSensitive;
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/**
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The width of the splitter sash.
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*/
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const wxCoord widthSash;
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};
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/**
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@struct wxHeaderButtonParams
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This @c struct can optionally be used with
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wxRendererNative::DrawHeaderButton() to specify custom values used to draw
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the text or bitmap label.
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@library{wxcore}
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@category{gdi}
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*/
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struct wxHeaderButtonParams
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{
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wxHeaderButtonParams();
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wxColour m_arrowColour;
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wxColour m_selectionColour;
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wxString m_labelText;
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wxFont m_labelFont;
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wxColour m_labelColour;
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wxBitmap m_labelBitmap;
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int m_labelAlignment;
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};
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/**
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Used to specify the type of sort arrow used with
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wxRendererNative::DrawHeaderButton().
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*/
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enum wxHeaderSortIconType
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{
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wxHDR_SORT_ICON_NONE, ///< Don't draw a sort arrow.
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wxHDR_SORT_ICON_UP, ///< Draw a sort arrow icon pointing up.
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wxHDR_SORT_ICON_DOWN ///< Draw a sort arrow icon pointing down.
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};
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/**
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@class wxDelegateRendererNative
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wxDelegateRendererNative allows reuse of renderers code by forwarding all the
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wxRendererNative methods to the given object and
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thus allowing you to only modify some of its methods -- without having to
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reimplement all of them.
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Note that the "normal", inheritance-based approach, doesn't work with the
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renderers as it is impossible to derive from a class unknown at compile-time
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and the renderer is only chosen at run-time. So suppose that you want to only
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add something to the drawing of the tree control buttons but leave all the
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other methods unchanged -- the only way to do it, considering that the renderer
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class which you want to customize might not even be written yet when you write
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your code (it could be written later and loaded from a DLL during run-time), is
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by using this class.
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Except for the constructor, it has exactly the same methods as
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wxRendererNative and their implementation is
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trivial: they are simply forwarded to the real renderer. Note that the "real"
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renderer may, in turn, be a wxDelegateRendererNative as well and that there may
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be arbitrarily many levels like this -- but at the end of the chain there must
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be a real renderer which does the drawing.
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@library{wxcore}
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@category{gdi}
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@see wxRendererNative
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*/
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class wxDelegateRendererNative : public wxRendererNative
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{
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public:
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/**
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The default constructor does the same thing as the other one except that it
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uses the @ref wxRendererNative::GetGeneric() "generic renderer" instead of the
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user-specified @a rendererNative.
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In any case, this sets up the delegate renderer object to follow all calls to
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the specified real renderer.
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*/
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wxDelegateRendererNative();
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/**
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This constructor uses the user-specified @a rendererNative to set up the delegate
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renderer object to follow all calls to the specified real renderer.
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@note
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This object does not take ownership of (i.e. won't delete) @a rendererNative.
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*/
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wxDelegateRendererNative(wxRendererNative& rendererNative);
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// The rest of these functions inherit the documentation from wxRendererNative
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virtual int DrawHeaderButton(wxWindow *win, wxDC& dc,
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const wxRect& rect, int flags = 0,
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wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
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wxHeaderButtonParams* params = NULL);
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virtual int DrawHeaderButtonContents(wxWindow *win, wxDC& dc,
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const wxRect& rect, int flags = 0,
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wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
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wxHeaderButtonParams* params = NULL);
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virtual int GetHeaderButtonHeight(wxWindow *win);
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virtual int GetHeaderButtonMargin(wxWindow *win);
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virtual void DrawTreeItemButton(wxWindow *win, wxDC& dc,
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const wxRect& rect, int flags = 0);
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virtual void DrawSplitterBorder(wxWindow *win, wxDC& dc,
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const wxRect& rect, int flags = 0);
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virtual void DrawSplitterSash(wxWindow *win, wxDC& dc,
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const wxSize& size, wxCoord position,
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wxOrientation orient, int flags = 0);
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virtual void DrawComboBoxDropButton(wxWindow *win, wxDC& dc,
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const wxRect& rect, int flags = 0);
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virtual void DrawDropArrow(wxWindow *win, wxDC& dc,
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const wxRect& rect, int flags = 0);
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virtual void DrawCheckBox(wxWindow *win, wxDC& dc,
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const wxRect& rect, int flags = 0 );
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virtual wxSize GetCheckBoxSize(wxWindow *win);
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virtual void DrawPushButton(wxWindow *win, wxDC& dc,
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const wxRect& rect, int flags = 0 );
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virtual void DrawItemSelectionRect(wxWindow *win, wxDC& dc,
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const wxRect& rect, int flags = 0 );
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virtual void DrawFocusRect(wxWindow* win, wxDC& dc,
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const wxRect& rect, int flags = 0);
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virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win);
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virtual wxRendererVersion GetVersion() const;
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};
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/**
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@class wxRendererNative
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First, a brief introduction to wxRendererNative and why it is needed.
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Usually wxWidgets uses the underlying low level GUI system to draw all the
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controls - this is what we mean when we say that it is a "native" framework.
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However not all controls exist under all (or even any) platforms and in this
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case wxWidgets provides a default, generic, implementation of them written in
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wxWidgets itself.
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These controls don't have the native appearance if only the standard
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line drawing and other graphics primitives are used, because the native
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appearance is different under different platforms while the lines are always
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drawn in the same way.
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This is why we have renderers: wxRendererNative is a class which virtualizes the
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drawing, i.e. it abstracts the drawing operations and allows you to draw say, a
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button, without caring about exactly how this is done. Of course, as we
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can draw the button differently in different renderers, this also allows us to
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emulate the native look and feel.
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So the renderers work by exposing a large set of high-level drawing functions
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which are used by the generic controls. There is always a default global
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renderer but it may be changed or extended by the user, see
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@ref page_samples_render.
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All drawing functions take some standard parameters:
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@li @a win - The window being drawn. It is normally not used and when
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it is it should only be used as a generic wxWindow
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(in order to get its low level handle, for example), but you should
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not assume that it is of some given type as the same renderer
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function may be reused for drawing different kinds of control.
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@li @a dc - The wxDC to draw on. Only this device
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context should be used for drawing. It is not necessary to restore
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pens and brushes for it on function exit but, on the other hand, you
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shouldn't assume that it is in any specific state on function entry:
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the rendering functions should always prepare it.
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@li @a rect - The bounding rectangle for the element to be drawn.
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@li @a flags - The optional flags (none by default) which can be a
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combination of the @ref wxCONTROL_FLAGS.
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Note that each drawing function restores the wxDC attributes if
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it changes them, so it is safe to assume that the same pen, brush and colours
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that were active before the call to this function are still in effect after it.
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@library{wxcore}
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@category{gdi}
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*/
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class wxRendererNative
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{
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public:
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/**
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Virtual destructor as for any base class.
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*/
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virtual ~wxRendererNative();
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/**
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Draw a check box.
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@a flags may have the @c wxCONTROL_CHECKED, @c wxCONTROL_CURRENT or
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@c wxCONTROL_UNDETERMINED bit set, see @ref wxCONTROL_FLAGS.
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*/
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virtual void DrawCheckBox(wxWindow* win, wxDC& dc, const wxRect& rect,
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int flags = 0) = 0;
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/**
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Draw a button like the one used by wxComboBox to show a
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drop down window. The usual appearance is a downwards pointing arrow.
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@a flags may have the @c wxCONTROL_PRESSED or @c wxCONTROL_CURRENT bit set,
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see @ref wxCONTROL_FLAGS.
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*/
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virtual void DrawComboBoxDropButton(wxWindow* win, wxDC& dc,
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const wxRect& rect, int flags = 0) = 0;
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/**
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Draw a drop down arrow that is suitable for use outside a combo box. Arrow will
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have transparent background.
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@a rect is not entirely filled by the arrow. Instead, you should use bounding
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rectangle of a drop down button which arrow matches the size you need.
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@a flags may have the @c wxCONTROL_PRESSED or @c wxCONTROL_CURRENT bit set,
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see @ref wxCONTROL_FLAGS.
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*/
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virtual void DrawDropArrow(wxWindow* win, wxDC& dc, const wxRect& rect,
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int flags = 0) = 0;
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/**
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Draw a focus rectangle using the specified rectangle.
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wxListCtrl.
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The only supported flags is @c wxCONTROL_SELECTED for items which are selected.
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see @ref wxCONTROL_FLAGS.
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*/
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virtual void DrawFocusRect(wxWindow* win, wxDC& dc, const wxRect& rect,
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int flags = 0) = 0;
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/**
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Draw the header control button (used, for example, by wxListCtrl).
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Depending on platforms the @a flags parameter may support the @c wxCONTROL_SELECTED
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@c wxCONTROL_DISABLED and @c wxCONTROL_CURRENT bits, see @ref wxCONTROL_FLAGS.
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@return
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The optimal width to contain the unabbreviated label text or
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bitmap, the sort arrow if present, and internal margins.
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*/
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virtual int DrawHeaderButton(wxWindow* win, wxDC& dc, const wxRect& rect,
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int flags = 0,
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wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE, wxHeaderButtonParams* params = NULL) = 0;
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/**
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Draw the contents of a header control button (label, sort arrows,
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etc.). This function is normally only called by DrawHeaderButton().
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Depending on platforms the @a flags parameter may support the @c wxCONTROL_SELECTED
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@c wxCONTROL_DISABLED and @c wxCONTROL_CURRENT bits, see @ref wxCONTROL_FLAGS.
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@return
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The optimal width to contain the unabbreviated label text or
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bitmap, the sort arrow if present, and internal margins.
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*/
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virtual int DrawHeaderButtonContents(wxWindow* win, wxDC& dc,
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const wxRect& rect, int flags = 0,
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wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE, wxHeaderButtonParams* params = NULL) = 0;
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/**
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Draw a selection rectangle underneath the text as used e.g. in a
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wxListCtrl.
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The supported @a flags are @c wxCONTROL_SELECTED for items
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which are selected (e.g. often a blue rectangle) and @c wxCONTROL_CURRENT
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for the item that has the focus (often a dotted line around the item's text).
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@c wxCONTROL_FOCUSED may be used to indicate if the control has the focus
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(otherwise the selection rectangle is e.g. often grey and not blue).
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This may be ignored by the renderer or deduced by the code directly from
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the @a win.
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*/
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virtual void DrawItemSelectionRect(wxWindow* win, wxDC& dc,
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const wxRect& rect, int flags = 0) = 0;
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/**
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Draw a blank push button that looks very similar to wxButton.
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@a flags may have the @c wxCONTROL_PRESSED, @c wxCONTROL_CURRENT or
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@c wxCONTROL_ISDEFAULT bit set, see @ref wxCONTROL_FLAGS.
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*/
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virtual void DrawPushButton(wxWindow* win, wxDC& dc, const wxRect& rect,
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int flags = 0) = 0;
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/**
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Draw the border for sash window: this border must be such that the sash
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drawn by DrawSplitterSash() blends into it well.
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*/
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virtual void DrawSplitterBorder(wxWindow* win, wxDC& dc, const wxRect& rect,
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int flags = 0) = 0;
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/**
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Draw a sash. The @a orient parameter defines whether the sash should be
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vertical or horizontal and how the @a position should be interpreted.
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*/
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virtual void DrawSplitterSash(wxWindow* win, wxDC& dc, const wxSize& size,
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wxCoord position, wxOrientation orient,
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int flags = 0) = 0;
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/**
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Draw the expanded/collapsed icon for a tree control item.
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To draw an expanded button the @a flags parameter must contain @c wxCONTROL_EXPANDED bit,
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see @ref wxCONTROL_FLAGS.
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*/
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virtual void DrawTreeItemButton(wxWindow* win, wxDC& dc, const wxRect& rect,
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int flags = 0) = 0;
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/**
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Draw a native wxChoice
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*/
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virtual void DrawChoice(wxWindow* win, wxDC& dc, const wxRect& rect, int flags = 0) = 0;
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/**
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Draw a native wxComboBox
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*/
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virtual void DrawComboBox(wxWindow* win, wxDC& dc, const wxRect& rect, int flags = 0) = 0;
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/**
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Draw a native wxTextCtrl frame
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*/
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virtual void DrawTextCtrl(wxWindow* win, wxDC& dc, const wxRect& rect, int flags = 0) = 0;
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/**
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Draw a native wxRadioButton bitmap.
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*/
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virtual void DrawRadioBitmap(wxWindow* win, wxDC& dc, const wxRect& rect, int flags = 0) = 0;
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/**
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Draw a title bar button in the given state.
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This function is currently only available under MSW and OS X (and only
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for wxTITLEBAR_BUTTON_CLOSE under the latter), its best replacement for
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the other platforms is to use wxArtProvider to retrieve the bitmaps for
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@c wxART_HELP and @c wxART_CLOSE (but not any other title bar buttons
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and not for any state but normal, i.e. not pressed and not current one).
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The presence of this function is indicated by @c
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wxHAS_DRAW_TITLE_BAR_BITMAP symbol being defined.
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Also notice that PNG handler must be enabled using wxImage::AddHandler()
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to use this function under OS X currently as the bitmaps are embedded
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in the library itself in PNG format.
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@since 2.9.1
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*/
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virtual void DrawTitleBarBitmap(wxWindow *win,
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wxDC& dc,
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const wxRect& rect,
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wxTitleBarButton button,
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int flags = 0) = 0;
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/**
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Return the currently used renderer.
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*/
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static wxRendererNative& Get();
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/**
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Return the default (native) implementation for this platform -- this is also
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the one used by default but this may be changed by calling
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Set() in which case the return value of this
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method may be different from the return value of Get().
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*/
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static wxRendererNative& GetDefault();
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/**
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Return the generic implementation of the renderer. Under some platforms, this
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is the default renderer implementation, others have platform-specific default
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renderer which can be retrieved by calling GetDefault().
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*/
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static wxRendererNative& GetGeneric();
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/**
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Returns the size of a check box.
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The @a win parameter is not used currently and can be @NULL.
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*/
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virtual wxSize GetCheckBoxSize(wxWindow* win) = 0;
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/**
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Returns the height of a header button, either a fixed platform height if
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available, or a generic height based on the @a win window's font.
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*/
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virtual int GetHeaderButtonHeight(wxWindow* win) = 0;
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/**
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Returns the horizontal margin on the left and right sides of header
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button's label.
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@since 2.9.2
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*/
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virtual int GetHeaderButtonMargin(wxWindow *win) = 0;
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/**
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Get the splitter parameters, see wxSplitterRenderParams.
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The @a win parameter should be a wxSplitterWindow.
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*/
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virtual wxSplitterRenderParams GetSplitterParams(const wxWindow* win) = 0;
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/**
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This function is used for version checking: Load()
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refuses to load any shared libraries implementing an older or incompatible
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version.
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|
|
|
@remarks
|
|
The implementation of this method is always the same in all renderers (simply
|
|
construct wxRendererVersion using the @c wxRendererVersion::Current_XXX values),
|
|
but it has to be in the derived, not base, class, to detect mismatches between
|
|
the renderers versions and so you have to implement it anew in all renderers.
|
|
*/
|
|
virtual wxRendererVersion GetVersion() const = 0;
|
|
|
|
/**
|
|
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.
|
|
|
|
The @a name should be just the base name of the renderer and not the full
|
|
name of the DLL file which is constructed differently (using
|
|
wxDynamicLibrary::CanonicalizePluginName())
|
|
on different systems.
|
|
*/
|
|
static wxRendererNative* Load(const wxString& name);
|
|
|
|
/**
|
|
Set the renderer to use, passing @NULL reverts to using the default
|
|
renderer (the global renderer must always exist).
|
|
|
|
Return the previous renderer used with Set() or @NULL if none.
|
|
*/
|
|
static wxRendererNative* Set(wxRendererNative* renderer);
|
|
};
|
|
|
|
|
|
|
|
/**
|
|
@struct wxRendererVersion
|
|
|
|
This simple struct represents the wxRendererNative
|
|
interface version and is only used as the return value of
|
|
wxRendererNative::GetVersion().
|
|
|
|
The version has two components: the version itself and the age. If the main
|
|
program and the renderer have different versions they are never compatible with
|
|
each other because the version is only changed when an existing virtual
|
|
function is modified or removed. The age, on the other hand, is incremented
|
|
each time a new virtual method is added and so, at least for the compilers
|
|
using a common C++ object model, the calling program is compatible with any
|
|
renderer which has the age greater or equal to its age. This verification is
|
|
done by IsCompatible() method.
|
|
|
|
@library{wxcore}
|
|
@category{gdi}
|
|
*/
|
|
struct wxRendererVersion
|
|
{
|
|
wxRendererVersion(int version_, int age_);
|
|
|
|
/**
|
|
Checks if the main program is compatible with the renderer having the version
|
|
@e ver, returns @true if it is and @false otherwise.
|
|
|
|
This method is used by wxRendererNative::Load() to determine whether a
|
|
renderer can be used.
|
|
*/
|
|
static bool IsCompatible(const wxRendererVersion& ver);
|
|
|
|
/**
|
|
The age component.
|
|
*/
|
|
const int age;
|
|
|
|
/**
|
|
The version component.
|
|
*/
|
|
const int version;
|
|
};
|
|
|