/////////////////////////////////////////////////////////////////////////////
// Name: cursor.h
-// Purpose: documentation for wxCursor class
+// Purpose: interface of wxCursor
// Author: wxWidgets team
// RCS-ID: $Id$
// Licence: wxWindows license
A cursor is a small bitmap usually used for denoting where the mouse
pointer is, with a picture that might indicate the interpretation of a
- mouse click. As with icons, cursors in X and MS Windows are created
- in a different manner. Therefore, separate cursors will be created for the
- different environments. Platform-specific methods for creating a @b wxCursor
- object are catered for, and this is an occasion where
- conditional compilation will probably be required (see wxIcon for
- an example).
+ mouse click. As with icons, cursors in X and MS Windows are created in a
+ different manner. Therefore, separate cursors will be created for the
+ different environments. Platform-specific methods for creating a wxCursor
+ object are catered for, and this is an occasion where conditional
+ compilation will probably be required (see wxIcon for an example).
A single cursor object may be used in many windows (any subwindow type).
- The wxWidgets convention is to set the cursor for a window, as in X,
- rather than to set it globally as in MS Windows, although a
- global ::wxSetCursor is also available for MS Windows use.
+ The wxWidgets convention is to set the cursor for a window, as in X, rather
+ than to set it globally as in MS Windows, although a global wxSetCursor()
+ function is also available for MS Windows use.
+
+ @section cursor_custom Creating a Custom Cursor
+
+ The following is an example of creating a cursor from 32x32 bitmap data
+ (down_bits) and a mask (down_mask) where 1 is black and 0 is white for the
+ bits, and 1 is opaque and 0 is transparent for the mask. It works on
+ Windows and GTK+.
+
+ @code
+ static char down_bits[] = { 255, 255, 255, 255, 31,
+ 255, 255, 255, 31, 255, 255, 255, 31, 255, 255, 255,
+ 31, 255, 255, 255, 31, 255, 255, 255, 31, 255, 255,
+ 255, 31, 255, 255, 255, 31, 255, 255, 255, 25, 243,
+ 255, 255, 19, 249, 255, 255, 7, 252, 255, 255, 15, 254,
+ 255, 255, 31, 255, 255, 255, 191, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+ 255 };
+
+ static char down_mask[] = { 240, 1, 0, 0, 240, 1,
+ 0, 0, 240, 1, 0, 0, 240, 1, 0, 0, 240, 1, 0, 0, 240, 1,
+ 0, 0, 240, 1, 0, 0, 240, 1, 0, 0, 255, 31, 0, 0, 255,
+ 31, 0, 0, 254, 15, 0, 0, 252, 7, 0, 0, 248, 3, 0, 0,
+ 240, 1, 0, 0, 224, 0, 0, 0, 64, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0 };
+
+ #ifdef __WXMSW__
+ wxBitmap down_bitmap(down_bits, 32, 32);
+ wxBitmap down_mask_bitmap(down_mask, 32, 32);
+
+ down_bitmap.SetMask(new wxMask(down_mask_bitmap));
+ wxImage down_image = down_bitmap.ConvertToImage();
+ down_image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, 6);
+ down_image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, 14);
+ wxCursor down_cursor = wxCursor(down_image);
+ #else
+ wxCursor down_cursor = wxCursor(down_bits, 32, 32, 6, 14,
+ down_mask, wxWHITE, wxBLACK);
+ #endif
+ @endcode
@library{wxcore}
@category{gdi}
@stdobjects
- Objects:
- wxNullCursor
- Pointers:
- wxSTANDARD_CURSOR
+ - ::wxNullCursor
+ - ::wxSTANDARD_CURSOR
+ - ::wxHOURGLASS_CURSOR
+ - ::wxCROSS_CURSOR
- wxHOURGLASS_CURSOR
-
- wxCROSS_CURSOR
-
- @seealso
- wxBitmap, wxIcon, wxWindow::SetCursor, ::wxSetCursor
+ @see wxBitmap, wxIcon, wxWindow::SetCursor(), wxSetCursor()
*/
class wxCursor : public wxBitmap
{
public:
- //@{
/**
- Copy constructor, uses @ref overview_trefcount "reference counting".
-
+ Default constructor.
+ */
+ wxCursor();
+ /**
+ Constructs a cursor by passing an array of bits (Motif and GTK+ only).
+ @a maskBits is used only under Motif and GTK+. The parameters @a fg and
+ @a bg are only present on GTK+, and force the cursor to use particular
+ background and foreground colours.
+
+ If either @a hotSpotX or @a hotSpotY is -1, the hotspot will be the
+ centre of the cursor image (Motif only).
+
@param bits
- An array of bits.
-
+ An array of bits.
@param maskBits
- Bits for a mask bitmap.
-
+ Bits for a mask bitmap.
@param width
- Cursor width.
-
+ Cursor width.
@param height
- Cursor height.
-
+ Cursor height.
@param hotSpotX
- Hotspot x coordinate.
-
+ Hotspot x coordinate.
@param hotSpotY
- Hotspot y coordinate.
-
- @param type
- Icon type to load. Under Motif, type defaults to wxBITMAP_TYPE_XBM. Under
- Windows,
- it defaults to wxBITMAP_TYPE_CUR_RESOURCE. Under MacOS, it defaults to
- wxBITMAP_TYPE_MACCURSOR_RESOURCE.
-
- Under X, the permitted cursor types are:
-
-
- wxBITMAP_TYPE_XBM
-
-
- Load an X bitmap file.
-
- Under Windows, the permitted types are:
-
-
- wxBITMAP_TYPE_CUR
-
-
- Load a cursor from a .cur cursor file (only if USE_RESOURCE_LOADING_IN_MSW
- is enabled in setup.h).
-
- wxBITMAP_TYPE_CUR_RESOURCE
-
-
- Load a Windows resource (as specified in the .rc file).
-
- wxBITMAP_TYPE_ICO
-
-
- Load a cursor from a .ico icon file (only if USE_RESOURCE_LOADING_IN_MSW
- is enabled in setup.h). Specify hotSpotX and hotSpotY.
-
- @param cursorId
- A stock cursor identifier. May be one of:
-
-
- wxCURSOR_ARROW
-
-
- A standard arrow cursor.
-
- wxCURSOR_RIGHT_ARROW
-
-
- A standard arrow cursor
- pointing to the right.
-
- wxCURSOR_BLANK
-
-
- Transparent cursor.
-
- wxCURSOR_BULLSEYE
-
-
- Bullseye cursor.
-
- wxCURSOR_CHAR
-
-
- Rectangular character cursor.
-
- wxCURSOR_CROSS
-
-
- A cross cursor.
-
- wxCURSOR_HAND
-
-
- A hand cursor.
-
- wxCURSOR_IBEAM
-
-
- An I-beam cursor (vertical line).
-
- wxCURSOR_LEFT_BUTTON
-
-
- Represents a mouse with the left button depressed.
-
- wxCURSOR_MAGNIFIER
-
-
- A magnifier icon.
-
- wxCURSOR_MIDDLE_BUTTON
-
-
- Represents a mouse with the middle button depressed.
-
- wxCURSOR_NO_ENTRY
-
-
- A no-entry sign cursor.
-
- wxCURSOR_PAINT_BRUSH
-
-
- A paintbrush cursor.
-
- wxCURSOR_PENCIL
-
-
- A pencil cursor.
-
- wxCURSOR_POINT_LEFT
-
-
- A cursor that points left.
-
- wxCURSOR_POINT_RIGHT
-
-
- A cursor that points right.
-
- wxCURSOR_QUESTION_ARROW
-
-
- An arrow and question mark.
-
- wxCURSOR_RIGHT_BUTTON
-
-
- Represents a mouse with the right button depressed.
-
- wxCURSOR_SIZENESW
-
-
- A sizing cursor pointing NE-SW.
-
- wxCURSOR_SIZENS
-
-
- A sizing cursor pointing N-S.
-
- wxCURSOR_SIZENWSE
-
-
- A sizing cursor pointing NW-SE.
-
- wxCURSOR_SIZEWE
-
-
- A sizing cursor pointing W-E.
-
- wxCURSOR_SIZING
-
-
- A general sizing cursor.
-
- wxCURSOR_SPRAYCAN
-
-
- A spraycan cursor.
-
- wxCURSOR_WAIT
-
-
- A wait cursor.
-
- wxCURSOR_WATCH
-
-
- A watch cursor.
-
- wxCURSOR_ARROWWAIT
-
-
- A cursor with both an arrow and
- an hourglass, (windows.)
-
- Note that not all cursors are available on all platforms.
-
- @param cursor
- Pointer or reference to a cursor to copy.
+ Hotspot y coordinate.
*/
- wxCursor();
wxCursor(const char bits[], int width, int height,
- int hotSpotX=-1, int hotSpotY=-1,
- const char maskBits[]=@NULL,
- wxColour* fg=@NULL,
- wxColour* bg=@NULL);
+ int hotSpotX = -1, int hotSpotY = -1,
+ const char maskBits[] = NULL,
+ wxColour* fg = NULL, wxColour* bg = NULL);
+ /**
+ Constructs a cursor by passing a string resource name or filename.
+
+ On MacOS when specifying a string resource name, first the color
+ cursors 'crsr' and then the black/white cursors 'CURS' in the resource
+ chain are scanned through.
+
+ @a hotSpotX and @a hotSpotY are currently only used under Windows when
+ loading from an icon file, to specify the cursor hotspot relative to
+ the top left of the image.
+
+ @param type
+ Icon type to load. Under Motif, type defaults to wxBITMAP_TYPE_XBM.
+ Under Windows, it defaults to wxBITMAP_TYPE_CUR_RESOURCE. Under
+ MacOS, it defaults to wxBITMAP_TYPE_MACCURSOR_RESOURCE.
+ Under X, the permitted cursor types are:
+ <ul>
+ <li>wxBITMAP_TYPE_XBM - Load an X bitmap file.</li>
+ </ul>
+ Under Windows, the permitted types are:
+ - wxBITMAP_TYPE_CUR - Load a cursor from a .cur cursor file (only
+ if USE_RESOURCE_LOADING_IN_MSW is enabled in
+ setup.h).
+ - wxBITMAP_TYPE_CUR_RESOURCE - Load a Windows resource (as
+ specified in the .rc file).
+ - wxBITMAP_TYPE_ICO - Load a cursor from a .ico icon file (only if
+ USE_RESOURCE_LOADING_IN_MSW is enabled in
+ setup.h). Specify @a hotSpotX and @a hotSpotY.
+ @param hotSpotX
+ Hotspot x coordinate.
+ @param hotSpotY
+ Hotspot y coordinate.
+ */
wxCursor(const wxString& cursorName, long type,
- int hotSpotX=0, int hotSpotY=0);
+ int hotSpotX = 0, int hotSpotY = 0);
+ /**
+ Constructs a cursor using a cursor identifier.
+
+ @param cursorId
+ A stock cursor identifier. May be one of the following (note that
+ not all cursors are available on all platforms):
+ - wxCURSOR_ARROW - A standard arrow cursor.
+ - wxCURSOR_RIGHT_ARROW - A standard arrow cursor pointing to the
+ right.
+ - wxCURSOR_BLANK - Transparent cursor.
+ - wxCURSOR_BULLSEYE - Bullseye cursor.
+ - wxCURSOR_CHAR - Rectangular character cursor.
+ - wxCURSOR_CROSS - A cross cursor.
+ - wxCURSOR_HAND - A hand cursor.
+ - wxCURSOR_IBEAM - An I-beam cursor (vertical line).
+ - wxCURSOR_LEFT_BUTTON - Represents a mouse with the left button
+ depressed.
+ - wxCURSOR_MAGNIFIER - A magnifier icon.
+ - wxCURSOR_MIDDLE_BUTTON - Represents a mouse with the middle
+ button depressed.
+ - wxCURSOR_NO_ENTRY - A no-entry sign cursor.
+ - wxCURSOR_PAINT_BRUSH - A paintbrush cursor.
+ - wxCURSOR_PENCIL - A pencil cursor.
+ - wxCURSOR_POINT_LEFT - A cursor that points left.
+ - wxCURSOR_POINT_RIGHT - A cursor that points right.
+ - wxCURSOR_QUESTION_ARROW - An arrow and question mark.
+ - wxCURSOR_RIGHT_BUTTON - Represents a mouse with the right
+ button depressed.
+ - wxCURSOR_SIZENESW - A sizing cursor pointing NE-SW.
+ - wxCURSOR_SIZENS - A sizing cursor pointing N-S.
+ - wxCURSOR_SIZENWSE - A sizing cursor pointing NW-SE.
+ - wxCURSOR_SIZEWE - A sizing cursor pointing W-E.
+ - wxCURSOR_SIZING - A general sizing cursor.
+ - wxCURSOR_SPRAYCAN - A spraycan cursor.
+ - wxCURSOR_WAIT - A wait cursor.
+ - wxCURSOR_WATCH - A watch cursor.
+ - wxCURSOR_ARROWWAIT - A cursor with both an arrow and an
+ hourglass, (windows.)
+ */
wxCursor(int cursorId);
+ /**
+ Constructs a cursor from a wxImage. If cursor are monochrome on the
+ current platform, colors with the RGB elements all greater than 127
+ will be foreground, colors less than this background. The mask (if any)
+ will be used to specify the transparent area.
+
+ In wxMSW the foreground will be white and the background black. If the
+ cursor is larger than 32x32 it is resized.
+
+ In wxGTK, colour cursors and alpha channel are supported (starting from
+ GTK+ 2.2). Otherwise the two most frequent colors will be used for
+ foreground and background. In any case, the cursor will be displayed at
+ the size of the image.
+
+ In wxMac, if the cursor is larger than 16x16 it is resized and
+ currently only shown as black/white (mask respected).
+ */
wxCursor(const wxImage& image);
+ /**
+ Copy constructor, uses @ref overview_refcount "reference counting".
+
+ @param cursor
+ Pointer or reference to a cursor to copy.
+ */
wxCursor(const wxCursor& cursor);
- //@}
/**
- Destroys the cursor.
- See @ref overview_refcountdestruct "reference-counted object destruction" for
- more info.
-
- A cursor can be reused for more
- than one window, and does not get destroyed when the window is
- destroyed. wxWidgets destroys all cursors on application exit, although
- it is best to clean them up explicitly.
+ Destroys the cursor. See
+ @ref overview_refcount_destruct "reference-counted object destruction"
+ for more info.
+
+ A cursor can be reused for more than one window, and does not get
+ destroyed when the window is destroyed. wxWidgets destroys all cursors
+ on application exit, although it is best to clean them up explicitly.
*/
~wxCursor();
/**
Returns @true if cursor data is present.
*/
-#define bool IsOk() /* implementation is private */
+ bool IsOk() const;
/**
- Assignment operator, using @ref overview_trefcount "reference counting".
+ Assignment operator, using @ref overview_refcount "reference counting".
*/
wxCursor operator =(const wxCursor& cursor);
};
+
+
+/** @name Predefined cursors. */
+//@{
+wxCursor wxNullCursor;
+wxCursor* wxSTANDARD_CURSOR;
+wxCursor* wxHOURGLASS_CURSOR;
+wxCursor* wxCROSS_CURSOR;
+//@}
+
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