// Name: gdicmn.h
// Purpose: interface of wxRealPoint
// Author: wxWidgets team
-// RCS-ID: $Id$
-// Licence: wxWindows license
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
wxBITMAP_TYPE_XBM_DATA,
wxBITMAP_TYPE_XPM,
wxBITMAP_TYPE_XPM_DATA,
- wxBITMAP_TYPE_TIF,
- wxBITMAP_TYPE_TIF_RESOURCE,
+ wxBITMAP_TYPE_TIFF,
+ wxBITMAP_TYPE_TIF = wxBITMAP_TYPE_TIFF,
+ wxBITMAP_TYPE_TIFF_RESOURCE,
+ wxBITMAP_TYPE_TIF_RESOURCE = wxBITMAP_TYPE_TIFF_RESOURCE,
wxBITMAP_TYPE_GIF,
wxBITMAP_TYPE_GIF_RESOURCE,
wxBITMAP_TYPE_PNG,
};
/**
- Standard cursors. See wxCursor.
+ Polygon filling mode. See wxDC::DrawPolygon.
+*/
+enum wxPolygonFillMode
+{
+ wxODDEVEN_RULE = 1,
+ wxWINDING_RULE
+};
+
+/**
+ Standard cursors.
+
+ Notice that under wxMSW some of these cursors are defined in @c wx.rc file
+ and not by the system itself so you should include this file from your own
+ resource file (possibly creating a trivial resource file just containing a
+ single include line if you don't need it otherwise) to be able to use them.
+
+ See wxCursor.
*/
enum wxStockCursor
{
A wxRealPoint is a useful data structure for graphics operations.
- It contains floating point @e x and @e y members. See wxPoint for an
- integer version.
+ It contains floating point @e x and @e y members.
+ See wxPoint for an integer version.
+
+ Note that the coordinates stored inside a wxRealPoint object may be negative
+ and that wxRealPoint functions do not perform any check against negative values.
@library{wxcore}
@category{data}
class wxRealPoint
{
public:
+ /**
+ Initializes to zero the x and y members.
+ */
wxRealPoint();
/**
*/
wxRealPoint(double x, double y);
+ /**
+ Converts the given wxPoint (with integer coordinates) to a wxRealPoint.
+ */
+ wxRealPoint(const wxPoint& pt);
+
+ /**
+ @name Miscellaneous operators
+
+ Note that these operators are documented as class members
+ (to make them easier to find) but, as their prototype shows,
+ they are implemented as global operators; note that this is
+ transparent to the user but it helps to understand why the
+ following functions are documented to take the wxPoint they
+ operate on as an explicit argument.
+ */
+ //@{
+ wxRealPoint& operator=(const wxRealPoint& pt);
+
+ bool operator ==(const wxRealPoint& p1, const wxRealPoint& p2);
+ bool operator !=(const wxRealPoint& p1, const wxRealPoint& p2);
+
+ wxRealPoint operator +(const wxRealPoint& p1, const wxRealPoint& p2);
+ wxRealPoint operator -(const wxRealPoint& p1, const wxRealPoint& p2);
+
+ wxRealPoint& operator +=(const wxRealPoint& pt);
+ wxRealPoint& operator -=(const wxRealPoint& pt);
+
+ wxRealPoint operator +(const wxRealPoint& pt, const wxSize& sz);
+ wxRealPoint operator -(const wxRealPoint& pt, const wxSize& sz);
+ wxRealPoint operator +(const wxSize& sz, const wxRealPoint& pt);
+ wxRealPoint operator -(const wxSize& sz, const wxRealPoint& pt);
+
+ wxRealPoint& operator +=(const wxSize& sz);
+ wxRealPoint& operator -=(const wxSize& sz);
+
+ wxSize operator /(const wxRealPoint& sz, int factor);
+ wxSize operator *(const wxRealPoint& sz, int factor);
+ wxSize operator *(int factor, const wxSize& sz);
+ wxSize& operator /=(int factor);
+ wxSize& operator *=(int factor);
+ //@}
+
/**
X coordinate of this point.
*/
A class for manipulating rectangles.
+ Note that the x, y coordinates and the width and height stored inside a wxRect
+ object may be negative and that wxRect functions do not perform any check against
+ negative values.
+
@library{wxcore}
@category{data}
public:
/**
Default constructor.
+ Initializes to zero the internal @a x, @a y, @a width and @a height members.
*/
wxRect();
/**
*/
wxRect(const wxPoint& topLeft, const wxPoint& bottomRight);
/**
- Creates a wxRect object from position and @a size values.
+ Creates a wxRect object from position @a pos and @a size values.
*/
wxRect(const wxPoint& pos, const wxSize& size);
/**
This method is the opposite from Inflate(): Deflate(a, b) is equivalent
to Inflate(-a, -b). Please refer to Inflate() for full description.
*/
- void Deflate(wxCoord dx, wxCoord dy);
- void Deflate(const wxSize& diff);
- void Deflate(wxCoord diff);
- wxRect Deflate(wxCoord dx, wxCoord dy) const;
+ wxRect& Deflate(wxCoord dx, wxCoord dy);
+ wxRect& Deflate(const wxSize& diff);
+ wxRect& Deflate(wxCoord diff);
+ wxRect Deflate(wxCoord dx, wxCoord dy) const;
//@}
/**
The left border is moved farther left and the right border is moved
farther right by @a dx. The upper border is moved farther up and the
- bottom border is moved farther down by @a dy. (Note the the width and
+ bottom border is moved farther down by @a dy. (Note that the width and
height of the rectangle thus change by 2*dx and 2*dy, respectively.) If
one or both of @a dx and @a dy are negative, the opposite happens: the
rectangle size decreases in the respective direction.
@see Deflate()
*/
- void Inflate(wxCoord dx, wxCoord dy);
- void Inflate(const wxSize& diff);
- void Inflate(wxCoord diff);
+ wxRect& Inflate(wxCoord dx, wxCoord dy);
+ wxRect& Inflate(const wxSize& diff);
+ wxRect& Inflate(wxCoord diff);
wxRect Inflate(wxCoord dx, wxCoord dy) const;
//@}
*/
void SetHeight(int height);
+ /**
+ Sets the position.
+ */
+ void SetPosition(const wxPoint& pos);
+
/**
Sets the size.
*/
void SetY(int y);
+ /**
+ Set the left side of the rectangle.
+
+ Notice that because the rectangle stores its left side and width,
+ calling SetLeft() changes the right side position too -- but does
+ preserve the width.
+ */
+ void SetLeft(int left);
+
+ /**
+ Set the right side of the rectangle.
+
+ Notice that this doesn't affect GetLeft() return value but changes the
+ rectangle width to set its right side to the given position.
+ */
+ void SetRight(int right);
+
+ /**
+ Set the top edge of the rectangle.
+
+ Notice that because the rectangle stores its top side and height,
+ calling SetTop() changes the bottom side position too -- but does
+ preserve the height.
+ */
+ void SetTop(int top);
+
+ /**
+ Set the bottom edge of the rectangle.
+
+ Notice that this doesn't affect GetTop() return value but changes the
+ rectangle height to set its bottom side to the given position.
+ */
+ void SetBottom(int bottom);
+
+ /**
+ Set the top-left point of the rectangle.
+ */
+ void SetTopLeft(const wxPoint &p);
+
+ /**
+ Set the bottom-right point of the rectangle.
+ */
+ void SetBottomRight(const wxPoint &p);
+
+ /**
+ Set the top-right point of the rectangle.
+ */
+ void SetTopRight(const wxPoint &p);
+
+ /**
+ Set the bottom-left point of the rectangle.
+ */
+ void SetBottomLeft(const wxPoint &p);
+
+
//@{
/**
Modifies the rectangle to contain the bounding box of this rectangle
A wxPoint is a useful data structure for graphics operations.
- It contains integer @e x and @e y members. See wxRealPoint for a floating
- point version.
+ It contains integer @e x and @e y members.
+ See wxRealPoint for a floating point version.
+
+ Note that the width and height stored inside a wxPoint object may be negative
+ and that wxPoint functions do not perform any check against negative values
+ (this is used to e.g. store the special -1 value in ::wxDefaultPosition instance).
@library{wxcore}
@category{data}
class wxPoint
{
public:
- //@{
/**
Constructs a point.
+ Initializes the internal x and y coordinates to zero.
*/
wxPoint();
+
+ /**
+ Initializes the point object with the given @a x and @a y coordinates.
+ */
wxPoint(int x, int y);
- //@}
/**
- Assignment operator.
+ Converts the given wxRealPoint (with floating point coordinates) to a
+ wxPoint instance.
+
+ Notice that this truncates the floating point values of @a pt
+ components, if you want to round them instead you need to do it
+ manually, e.g.
+ @code
+ #include <wx/math.h> // for wxRound()
+
+ wxRealPoint rp = ...;
+ wxPoint p(wxRound(rp.x), wxRound(rp.y));
+ @endcode
+ */
+ wxPoint(const wxRealPoint& pt);
+
+ /**
+ @name Miscellaneous operators
+
+ Note that these operators are documented as class members
+ (to make them easier to find) but, as their prototype shows,
+ they are implemented as global operators; note that this is
+ transparent to the user but it helps to understand why the
+ following functions are documented to take the wxPoint they
+ operate on as an explicit argument.
*/
+ //@{
wxPoint& operator=(const wxPoint& pt);
bool operator ==(const wxPoint& p1, const wxPoint& p2);
wxPoint& operator +=(const wxSize& sz);
wxPoint& operator -=(const wxSize& sz);
+ wxSize operator /(const wxPoint& sz, int factor);
+ wxSize operator *(const wxPoint& sz, int factor);
+ wxSize operator *(int factor, const wxSize& sz);
+ wxSize& operator /=(int factor);
+ wxSize& operator *=(int factor);
+ //@}
+
+
+ /**
+ @name Defaults handling.
+
+ Test for and set non-specified wxPoint components.
+
+ Although a wxPoint is always initialized to (0, 0), wxWidgets commonly
+ uses wxDefaultCoord (defined as @c -1) to indicate that a point hasn't
+ been initialized or specified. In particular, ::wxDefaultPosition is
+ used in many places with this meaning.
+ */
+ //@{
+
+ /**
+ Returns @true if neither of the point components is equal to
+ wxDefaultCoord.
+
+ This method is typically used before calling SetDefaults().
+
+ @since 2.9.2
+ */
+ bool IsFullySpecified() const;
+
+ /**
+ Combine this object with another one replacing the uninitialized
+ values.
+
+ It is typically used like this:
+
+ @code
+ if ( !pos.IsFullySpecified() )
+ {
+ pos.SetDefaults(GetDefaultPosition());
+ }
+ @endcode
+
+ @see IsFullySpecified()
+
+ @since 2.9.2
+ */
+ void SetDefaults(const wxPoint& pt);
+ //@}
+
/**
x member.
*/
};
/**
- Global istance of a wxPoint initialized with values (-1,-1).
+ Global instance of a wxPoint initialized with values (-1,-1).
*/
-wxPoint wxDefaultPosition;
+const wxPoint wxDefaultPosition;
/**
};
+/**
+ Global instance of a wxColourDatabase.
+*/
+wxColourDatabase* wxTheColourDatabase;
+
+
/**
@class wxSize
- A wxSize is a useful data structure for graphics operations. It simply
- contains integer @e width and @e height members.
+ A wxSize is a useful data structure for graphics operations.
+ It simply contains integer @e width and @e height members.
+
+ Note that the width and height stored inside a wxSize object may be negative
+ and that wxSize functions do not perform any check against negative values
+ (this is used to e.g. store the special -1 value in ::wxDefaultSize instance).
+ See also IsFullySpecified() and SetDefaults() for utility functions regarding
+ the special -1 value.
wxSize is used throughout wxWidgets as well as wxPoint which, although
almost equivalent to wxSize, has a different meaning: wxPoint represents a
position while wxSize represents the size.
- @beginWxPythonOnly
- wxPython defines aliases for the @e x and @e y members named @e width and
- @e height since it makes much more sense for sizes.
- @endWxPythonOnly
-
@library{wxcore}
@category{data}
class wxSize
{
public:
- //@{
/**
- Creates a size object.
+ Initializes this size object with zero width and height.
*/
wxSize();
+
+ /**
+ Initializes this size object with the given @a width and @a height.
+ */
wxSize(int width, int height);
- //@}
//@{
/**
@see IncBy()
*/
+ void DecBy(const wxPoint& pt);
void DecBy(const wxSize& size);
void DecBy(int dx, int dy);
void DecBy(int d);
*/
void DecTo(const wxSize& size);
+ /**
+ Decrements this object to be not bigger than the given size ignoring
+ non-specified components.
+
+ This is similar to DecTo() but doesn't do anything for x or y
+ component if the same component of @a size is not specified, i.e. set
+ to ::wxDefaultCoord.
+
+ @since 2.9.5
+ */
+ void DecToIfSpecified(const wxSize& size);
+
/**
Gets the height member.
*/
@see DecBy()
*/
+ void IncBy(const wxPoint& pt);
void IncBy(const wxSize& size);
void IncBy(int dx, int dy);
void IncBy(int d);
void Set(int width, int height);
/**
- Combine this size object with another one replacing the default (i.e.
- equal to -1) components of this object with those of the other. It is
- typically used like this:
+ Combine this size object with another one replacing the default (i.e.\ equal to -1)
+ components of this object with those of the other. It is typically used like this:
@code
if ( !size.IsFullySpecified() )
*/
void SetWidth(int width);
+
/**
- Assignment operator.
+ @name Miscellaneous operators
+
+ Note that these operators are documented as class members
+ (to make them easier to find) but, as their prototype shows,
+ they are implemented as global operators; note that this is
+ transparent to the user but it helps to understand why the
+ following functions are documented to take the wxSize they
+ operate on as an explicit argument.
*/
+ //@{
wxSize& operator=(const wxSize& sz);
bool operator ==(const wxSize& s1, const wxSize& s2);
wxSize operator *(int factor, const wxSize& sz);
wxSize& operator /=(int factor);
wxSize& operator *=(int factor);
+ //@}
};
/**
Global instance of a wxSize object initialized to (-1,-1).
*/
-wxSize wxDefaultSize;
+const wxSize wxDefaultSize;
// Global functions/macros
// ============================================================================
-/** @ingroup group_funcmacro_gdi */
+/** @addtogroup group_funcmacro_gdi */
//@{
/**
*/
#define wxBITMAP(bitmapName)
+/**
+ Creates a bitmap from either application resources or embedded image data
+ in PNG format.
+
+ This macro is similar to wxBITMAP() but works with bitmap data in PNG
+ format and not BMP or XPM.
+
+ Under Windows the given @a bitmapName must be present in the application
+ resource file with the type @c RCDATA and refer to a PNG image. I.e. you
+ should have a definition similar to the following in your @c .rc file:
+ @code
+ mybitmap RCDATA "mybitmap.png"
+ @endcode
+ to be able to use @c wxBITMAP_PNG(mybitmap) in the code.
+
+ Under OS X the file with the specified name and "png" extension must be
+ present in the "Resources" subdirectory of the application bundle.
+
+ Under the other platforms, this is equivalent to wxBITMAP_PNG_FROM_DATA()
+ and so loads the image data from the array called @c bitmapName_png that
+ must exist. Notice that it @e must be an array and not a pointer as the
+ macro needs to be able to determine its size. Such an array can be produced
+ by a number of conversion programs. A very simple one is included in
+ wxWidgets distribution as @c misc/scripts/png2c.py.
+
+ Finally notice that you must register PNG image handler to be able to
+ load bitmaps from PNG data. This can be done either by calling
+ wxInitAllImageHandlers() which also registers all the other image formats
+ or including the necessary header:
+ @code
+ #include <wx/imagpng.h>
+ @endcode
+ and calling
+ @code
+ wxImage::AddHandler(new wxPNGHandler);
+ @endcode
+ in your application startup code.
+
+ @see wxBITMAP_PNG_FROM_DATA()
+
+ @header{wx/gdicmn.h}
+
+ @since 2.9.5
+ */
+#define wxBITMAP_PNG(bitmapName)
+
+/**
+ Creates a bitmap from embedded image data in PNG format.
+
+ This macro is a thin wrapper around wxBitmap::NewFromPNGData() and takes
+ just the base name of the array containing the image data and computes its
+ size internally. In other words, the array called @c bitmapName_png must
+ exist. Notice that it @e must be an array and not a pointer as the macro
+ needs to be able to determine its size. Such an array can be produced by a
+ number of conversion programs. A very simple one is included in wxWidgets
+ distribution as @c misc/scripts/png2c.py.
+
+ You can use wxBITMAP_PNG() to load the PNG bitmaps from resources on the
+ platforms that support this and only fall back to loading them from data
+ under the other ones (i.e. not Windows and not OS X).
+
+ @header{wx/gdicmn.h}
+
+ @since 2.9.5
+ */
+#define wxBITMAP_PNG_FROM_DATA(bitmapName)
+
/**
This macro loads an icon from either application resources (on the
platforms for which they exist, i.e. Windows and OS2) or from an XPM file.
@header{wx/gdicmn.h}
*/
-wxICON();
+#define wxICON(iconName)
/**
Returns @true if the display is colour, @false otherwise.
//@}
-/** @ingroup group_funcmacro_gdi */
+/** @addtogroup group_funcmacro_gdi */
+//@{
+/**
+ Returns the dimensions of the work area on the display.
+
+ This is the same as wxGetClientDisplayRect() but allows to retrieve the
+ individual components instead of the entire rectangle.
+
+ Any of the output pointers can be @NULL if the corresponding value is not
+ needed by the caller.
+
+ @see wxDisplay
+
+ @header{wx/gdicmn.h}
+*/
+void wxClientDisplayRect(int* x, int* y, int* width, int* height);
+//@}
+
+/** @addtogroup group_funcmacro_gdi */
//@{
/**
Returns the dimensions of the work area on the display. On Windows this
currently defaulting to the whole display until a way is found to provide
this info for all window managers, etc.
+ @see wxDisplay
+
@header{wx/gdicmn.h}
*/
-void wxClientDisplayRect(int* x, int* y, int* width, int* height);
wxRect wxGetClientDisplayRect();
//@}
-/** @ingroup group_funcmacro_gdi */
+/** @addtogroup group_funcmacro_gdi */
//@{
/**
Returns the display resolution in pixels per inch.
@header{wx/gdicmn.h}
+ @see wxDisplay
+
@since 2.9.0
*/
wxSize wxGetDisplayPPI();
//@}
-/** @ingroup group_funcmacro_gdi */
+/** @addtogroup group_funcmacro_gdi */
//@{
/**
Returns the display size in pixels.
- For the version taking @a width and @a header arguments, either of them
- can be @NULL if the caller is not interested in the returned value.
+ Either of output pointers can be @NULL if the caller is not interested in
+ the corresponding value.
+
+ @see wxGetDisplaySize(), wxDisplay
@header{wx/gdicmn.h}
*/
void wxDisplaySize(int* width, int* height);
+//@}
+
+/** @addtogroup group_funcmacro_gdi */
+//@{
+/**
+ Returns the display size in pixels.
+
+ @see wxDisplay
+
+ @header{wx/gdicmn.h}
+*/
wxSize wxGetDisplaySize();
//@}
-/** @ingroup group_funcmacro_gdi */
+/** @addtogroup group_funcmacro_gdi */
//@{
/**
Returns the display size in millimeters.
- For the version taking @a width and @a header arguments, either of them
- can be @NULL if the caller is not interested in the returned value.
+ Either of output pointers can be @NULL if the caller is not interested in
+ the corresponding value.
- @see wxGetDisplayPPI()
+ @see wxGetDisplaySizeMM(), wxDisplay
@header{wx/gdicmn.h}
*/
void wxDisplaySizeMM(int* width, int* height);
+//@}
+
+/** @addtogroup group_funcmacro_gdi */
+//@{
+/**
+ Returns the display size in millimeters.
+
+ @see wxDisplay
+
+ @header{wx/gdicmn.h}
+*/
wxSize wxGetDisplaySizeMM();
//@}
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