X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/808f5a3aac2ca22a29396ccc460559d938bb5bc8..4d98817cfab2654773755cb5c540057c5f3d4fd6:/interface/wx/gdicmn.h

diff --git a/interface/wx/gdicmn.h b/interface/wx/gdicmn.h
index 0475c1d194..b660421374 100644
--- a/interface/wx/gdicmn.h
+++ b/interface/wx/gdicmn.h
@@ -3,7 +3,7 @@
 // Purpose:     interface of wxRealPoint
 // Author:      wxWidgets team
 // RCS-ID:      $Id$
-// Licence:     wxWindows license
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 
@@ -58,7 +58,14 @@ enum wxPolygonFillMode
 };
 
 /**
-    Standard cursors. See wxCursor.
+    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
 {
@@ -106,8 +113,11 @@ 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}
@@ -117,6 +127,9 @@ enum wxStockCursor
 class wxRealPoint
 {
 public:
+    /**
+        Initializes to zero the x and y members.
+    */
     wxRealPoint();
 
     /**
@@ -124,6 +137,48 @@ public:
     */
     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.
     */
@@ -142,6 +197,10 @@ public:
 
     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}
 
@@ -152,6 +211,7 @@ class wxRect
 public:
     /**
         Default constructor.
+        Initializes to zero the internal @a x, @a y, @a width and @a height members.
     */
     wxRect();
     /**
@@ -163,7 +223,7 @@ public:
     */
     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);
     /**
@@ -206,10 +266,10 @@ public:
         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;
     //@}
 
     /**
@@ -291,7 +351,7 @@ public:
 
         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.
@@ -314,9 +374,9 @@ public:
 
         @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;
     //@}
 
@@ -451,8 +511,12 @@ public:
 
     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}
@@ -465,17 +529,34 @@ public:
 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.
     */
+    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);
@@ -495,6 +576,56 @@ public:
     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.
     */
@@ -507,9 +638,9 @@ public:
 };
 
 /**
-    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;
 
 
 /**
@@ -636,11 +767,23 @@ public:
 };
 
 
+/**
+    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
@@ -662,13 +805,15 @@ public:
 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);
-    //@}
 
     //@{
     /**
@@ -676,6 +821,7 @@ public:
 
         @see IncBy()
     */
+    void DecBy(const wxPoint& pt);
     void DecBy(const wxSize& size);
     void DecBy(int dx, int dy);
     void DecBy(int d);
@@ -705,6 +851,7 @@ public:
 
         @see DecBy()
     */
+    void IncBy(const wxPoint& pt);
     void IncBy(const wxSize& size);
     void IncBy(int dx, int dy);
     void IncBy(int d);
@@ -768,9 +915,18 @@ public:
     */
     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);
@@ -786,12 +942,13 @@ public:
     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;