interface/wx/gdicmn.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        gdicmn.h
   3 // Purpose:     interface of wxRealPoint
   4 // Author:      wxWidgets team
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows licence
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9
  10 /**
  11     Bitmap type flags. See wxBitmap and wxImage classes.
  12 */
  13 enum wxBitmapType
  14 {
  15     wxBITMAP_TYPE_INVALID,
  16     wxBITMAP_TYPE_BMP,
  17     wxBITMAP_TYPE_BMP_RESOURCE,
  18     wxBITMAP_TYPE_RESOURCE = wxBITMAP_TYPE_BMP_RESOURCE,
  19     wxBITMAP_TYPE_ICO,
  20     wxBITMAP_TYPE_ICO_RESOURCE,
  21     wxBITMAP_TYPE_CUR,
  22     wxBITMAP_TYPE_CUR_RESOURCE,
  23     wxBITMAP_TYPE_XBM,
  24     wxBITMAP_TYPE_XBM_DATA,
  25     wxBITMAP_TYPE_XPM,
  26     wxBITMAP_TYPE_XPM_DATA,
  27     wxBITMAP_TYPE_TIF,
  28     wxBITMAP_TYPE_TIF_RESOURCE,
  29     wxBITMAP_TYPE_GIF,
  30     wxBITMAP_TYPE_GIF_RESOURCE,
  31     wxBITMAP_TYPE_PNG,
  32     wxBITMAP_TYPE_PNG_RESOURCE,
  33     wxBITMAP_TYPE_JPEG,
  34     wxBITMAP_TYPE_JPEG_RESOURCE,
  35     wxBITMAP_TYPE_PNM,
  36     wxBITMAP_TYPE_PNM_RESOURCE,
  37     wxBITMAP_TYPE_PCX,
  38     wxBITMAP_TYPE_PCX_RESOURCE,
  39     wxBITMAP_TYPE_PICT,
  40     wxBITMAP_TYPE_PICT_RESOURCE,
  41     wxBITMAP_TYPE_ICON,
  42     wxBITMAP_TYPE_ICON_RESOURCE,
  43     wxBITMAP_TYPE_ANI,
  44     wxBITMAP_TYPE_IFF,
  45     wxBITMAP_TYPE_TGA,
  46     wxBITMAP_TYPE_MACCURSOR,
  47     wxBITMAP_TYPE_MACCURSOR_RESOURCE,
  48     wxBITMAP_TYPE_ANY = 50
  49 };
  50
  51 /**
  52     Polygon filling mode. See wxDC::DrawPolygon.
  53 */
  54 enum wxPolygonFillMode
  55 {
  56     wxODDEVEN_RULE = 1,
  57     wxWINDING_RULE
  58 };
  59
  60 /**
  61     Standard cursors.
  62
  63     Notice that under wxMSW some of these cursors are defined in @c wx.rc file
  64     and not by the system itself so you should include this file from your own
  65     resource file (possibly creating a trivial resource file just containing a
  66     single include line if you don't need it otherwise) to be able to use them.
  67
  68     See wxCursor.
  69 */
  70 enum wxStockCursor
  71 {
  72     wxCURSOR_NONE,
  73     wxCURSOR_ARROW,             ///< A standard arrow cursor.
  74     wxCURSOR_RIGHT_ARROW,       ///< A standard arrow cursor pointing to the right.
  75     wxCURSOR_BULLSEYE,          ///< Bullseye cursor.
  76     wxCURSOR_CHAR,              ///< Rectangular character cursor.
  77     wxCURSOR_CROSS,             ///< A cross cursor.
  78     wxCURSOR_HAND,              ///< A hand cursor.
  79     wxCURSOR_IBEAM,             ///< An I-beam cursor (vertical line).
  80     wxCURSOR_LEFT_BUTTON,       ///< Represents a mouse with the left button depressed.
  81     wxCURSOR_MAGNIFIER,         ///< A magnifier icon.
  82     wxCURSOR_MIDDLE_BUTTON,     ///< Represents a mouse with the middle button depressed.
  83     wxCURSOR_NO_ENTRY,          ///< A no-entry sign cursor.
  84     wxCURSOR_PAINT_BRUSH,       ///< A paintbrush cursor.
  85     wxCURSOR_PENCIL,            ///< A pencil cursor.
  86     wxCURSOR_POINT_LEFT,        ///< A cursor that points left.
  87     wxCURSOR_POINT_RIGHT,       ///< A cursor that points right.
  88     wxCURSOR_QUESTION_ARROW,    ///< An arrow and question mark.
  89     wxCURSOR_RIGHT_BUTTON,      ///< Represents a mouse with the right button depressed.
  90     wxCURSOR_SIZENESW,          ///< A sizing cursor pointing NE-SW.
  91     wxCURSOR_SIZENS,            ///< A sizing cursor pointing N-S.
  92     wxCURSOR_SIZENWSE,          ///< A sizing cursor pointing NW-SE.
  93     wxCURSOR_SIZEWE,            ///< A sizing cursor pointing W-E.
  94     wxCURSOR_SIZING,            ///< A general sizing cursor.
  95     wxCURSOR_SPRAYCAN,          ///< A spraycan cursor.
  96     wxCURSOR_WAIT,              ///< A wait cursor.
  97     wxCURSOR_WATCH,             ///< A watch cursor.
  98     wxCURSOR_BLANK,             ///< Transparent cursor.
  99     wxCURSOR_DEFAULT,           ///< Standard X11 cursor (only in wxGTK).
 100     wxCURSOR_COPY_ARROW ,       ///< MacOS Theme Plus arrow (only in wxMac).
 101     wxCURSOR_CROSS_REVERSE,     ///< Only available on wxX11.
 102     wxCURSOR_DOUBLE_ARROW,      ///< Only available on wxX11.
 103     wxCURSOR_BASED_ARROW_UP,    ///< Only available on wxX11.
 104     wxCURSOR_BASED_ARROW_DOWN,  ///< Only available on wxX11.
 105     wxCURSOR_ARROWWAIT,         ///< A wait cursor with a standard arrow.
 106     wxCURSOR_MAX
 107 };
 108
 109
 110
 111 /**
 112     @class wxRealPoint
 113
 114     A wxRealPoint is a useful data structure for graphics operations.
 115
 116     It contains floating point @e x and @e y members.
 117     See wxPoint for an integer version.
 118
 119     Note that the coordinates stored inside a wxRealPoint object may be negative
 120     and that wxRealPoint functions do not perform any check against negative values.
 121
 122     @library{wxcore}
 123     @category{data}
 124
 125     @see wxPoint
 126 */
 127 class wxRealPoint
 128 {
 129 public:
 130     /**
 131         Initializes to zero the x and y members.
 132     */
 133     wxRealPoint();
 134
 135     /**
 136         Initializes the point with the given coordinates.
 137     */
 138     wxRealPoint(double x, double y);
 139
 140     /**
 141         Converts the given wxPoint (with integer coordinates) to a wxRealPoint.
 142     */
 143     wxRealPoint(const wxPoint& pt);
 144
 145     /**
 146         @name Miscellaneous operators
 147
 148         Note that these operators are documented as class members
 149         (to make them easier to find) but, as their prototype shows,
 150         they are implemented as global operators; note that this is
 151         transparent to the user but it helps to understand why the
 152         following functions are documented to take the wxPoint they
 153         operate on as an explicit argument.
 154     */
 155     //@{
 156     wxRealPoint& operator=(const wxRealPoint& pt);
 157
 158     bool operator ==(const wxRealPoint& p1, const wxRealPoint& p2);
 159     bool operator !=(const wxRealPoint& p1, const wxRealPoint& p2);
 160
 161     wxRealPoint operator +(const wxRealPoint& p1, const wxRealPoint& p2);
 162     wxRealPoint operator -(const wxRealPoint& p1, const wxRealPoint& p2);
 163
 164     wxRealPoint& operator +=(const wxRealPoint& pt);
 165     wxRealPoint& operator -=(const wxRealPoint& pt);
 166
 167     wxRealPoint operator +(const wxRealPoint& pt, const wxSize& sz);
 168     wxRealPoint operator -(const wxRealPoint& pt, const wxSize& sz);
 169     wxRealPoint operator +(const wxSize& sz, const wxRealPoint& pt);
 170     wxRealPoint operator -(const wxSize& sz, const wxRealPoint& pt);
 171
 172     wxRealPoint& operator +=(const wxSize& sz);
 173     wxRealPoint& operator -=(const wxSize& sz);
 174
 175     wxSize operator /(const wxRealPoint& sz, int factor);
 176     wxSize operator *(const wxRealPoint& sz, int factor);
 177     wxSize operator *(int factor, const wxSize& sz);
 178     wxSize& operator /=(int factor);
 179     wxSize& operator *=(int factor);
 180     //@}
 181
 182     /**
 183         X coordinate of this point.
 184     */
 185     double x;
 186
 187     /**
 188         Y coordinate of this point.
 189     */
 190     double y;
 191 };
 192
 193
 194
 195 /**
 196     @class wxRect
 197
 198     A class for manipulating rectangles.
 199
 200     Note that the x, y coordinates and the width and height stored inside a wxRect
 201     object may be negative and that wxRect functions do not perform any check against
 202     negative values.
 203
 204     @library{wxcore}
 205     @category{data}
 206
 207     @see wxPoint, wxSize
 208 */
 209 class wxRect
 210 {
 211 public:
 212     /**
 213         Default constructor.
 214         Initializes to zero the internal @a x, @a y, @a width and @a height members.
 215     */
 216     wxRect();
 217     /**
 218         Creates a wxRect object from @a x, @a y, @a width and @a height values.
 219     */
 220     wxRect(int x, int y, int width, int height);
 221     /**
 222         Creates a wxRect object from top-left and bottom-right points.
 223     */
 224     wxRect(const wxPoint& topLeft, const wxPoint& bottomRight);
 225     /**
 226         Creates a wxRect object from position @a pos and @a size values.
 227     */
 228     wxRect(const wxPoint& pos, const wxSize& size);
 229     /**
 230         Creates a wxRect object from @a size values at the origin.
 231     */
 232     wxRect(const wxSize& size);
 233
 234     //@{
 235     /**
 236         Returns the rectangle having the same size as this one but centered
 237         relatively to the given rectangle @a r. By default, rectangle is
 238         centred in both directions but if @a dir includes only @c wxVERTICAL or
 239         only @c wxHORIZONTAL, then it is only centered in this direction while
 240         the other component of its position remains unchanged.
 241     */
 242     wxRect CentreIn(const wxRect& r, int dir = wxBOTH) const;
 243     wxRect CenterIn(const wxRect& r, int dir = wxBOTH) const;
 244     //@}
 245
 246     /**
 247         Returns @true if the given point is inside the rectangle (or on its
 248         boundary) and @false otherwise.
 249     */
 250     bool Contains(int x, int y) const;
 251     /**
 252         Returns @true if the given point is inside the rectangle (or on its
 253         boundary) and @false otherwise.
 254     */
 255     bool Contains(const wxPoint& pt) const;
 256     /**
 257         Returns @true if the given rectangle is completely inside this
 258         rectangle (or touches its boundary) and @false otherwise.
 259     */
 260     bool Contains(const wxRect& rect) const;
 261
 262     //@{
 263     /**
 264         Decrease the rectangle size.
 265
 266         This method is the opposite from Inflate(): Deflate(a, b) is equivalent
 267         to Inflate(-a, -b). Please refer to Inflate() for full description.
 268     */
 269     void Deflate(wxCoord dx, wxCoord dy);
 270     void Deflate(const wxSize& diff);
 271     void Deflate(wxCoord diff);
 272     wxRect Deflate(wxCoord dx, wxCoord dy) const;
 273     //@}
 274
 275     /**
 276         Gets the bottom point of the rectangle.
 277     */
 278     int GetBottom() const;
 279
 280     /**
 281         Gets the position of the bottom left corner.
 282     */
 283     wxPoint GetBottomLeft() const;
 284
 285     /**
 286         Gets the position of the bottom right corner.
 287     */
 288     wxPoint GetBottomRight() const;
 289
 290     /**
 291         Gets the height member.
 292     */
 293     int GetHeight() const;
 294
 295     /**
 296         Gets the left point of the rectangle (the same as GetX()).
 297     */
 298     int GetLeft() const;
 299
 300     /**
 301         Gets the position.
 302     */
 303     wxPoint GetPosition() const;
 304
 305     /**
 306         Gets the right point of the rectangle.
 307     */
 308     int GetRight() const;
 309
 310     /**
 311         Gets the size.
 312
 313         @see SetSize()
 314     */
 315     wxSize GetSize() const;
 316
 317     /**
 318         Gets the top point of the rectangle (the same as GetY()).
 319     */
 320     int GetTop() const;
 321
 322     /**
 323         Gets the position of the top left corner of the rectangle, same as
 324         GetPosition().
 325     */
 326     wxPoint GetTopLeft() const;
 327
 328     /**
 329         Gets the position of the top right corner.
 330     */
 331     wxPoint GetTopRight() const;
 332
 333     /**
 334         Gets the width member.
 335     */
 336     int GetWidth() const;
 337
 338     /**
 339         Gets the x member.
 340     */
 341     int GetX() const;
 342
 343     /**
 344         Gets the y member.
 345     */
 346     int GetY() const;
 347
 348     //@{
 349     /**
 350         Increases the size of the rectangle.
 351
 352         The left border is moved farther left and the right border is moved
 353         farther right by @a dx. The upper border is moved farther up and the
 354         bottom border is moved farther down by @a dy. (Note the the width and
 355         height of the rectangle thus change by 2*dx and 2*dy, respectively.) If
 356         one or both of @a dx and @a dy are negative, the opposite happens: the
 357         rectangle size decreases in the respective direction.
 358
 359         Inflating and deflating behaves "naturally". Defined more precisely,
 360         that means:
 361         -# "Real" inflates (that is, @a dx and/or @a dy = 0) are not
 362            constrained. Thus inflating a rectangle can cause its upper left
 363            corner to move into the negative numbers. (2.5.4 and older forced
 364            the top left coordinate to not fall below (0, 0), which implied a
 365            forced move of the rectangle.)
 366         -# Deflates are clamped to not reduce the width or height of the
 367            rectangle below zero. In such cases, the top-left corner is
 368            nonetheless handled properly. For example, a rectangle at (10, 10)
 369            with size (20, 40) that is inflated by (-15, -15) will become
 370            located at (20, 25) at size (0, 10). Finally, observe that the width
 371            and height are treated independently. In the above example, the
 372            width is reduced by 20, whereas the height is reduced by the full 30
 373            (rather than also stopping at 20, when the width reached zero).
 374
 375         @see Deflate()
 376     */
 377     void Inflate(wxCoord dx, wxCoord dy);
 378     void Inflate(const wxSize& diff);
 379     void Inflate(wxCoord diff);
 380     wxRect Inflate(wxCoord dx, wxCoord dy) const;
 381     //@}
 382
 383     /**
 384         Modifies this rectangle to contain the overlapping portion of this rectangle
 385         and the one passed in as parameter.
 386
 387         @return This rectangle, modified.
 388     */
 389     wxRect& Intersect(const wxRect& rect);
 390
 391     /**
 392         Returns the overlapping portion of this rectangle and the one passed in as
 393         parameter.
 394     */
 395     wxRect Intersect(const wxRect& rect) const;
 396
 397     /**
 398         Returns @true if this rectangle has a non-empty intersection with the
 399         rectangle @a rect and @false otherwise.
 400     */
 401     bool Intersects(const wxRect& rect) const;
 402
 403     /**
 404         Returns @true if this rectangle has a width or height less than or
 405         equal to 0 and @false otherwise.
 406     */
 407     bool IsEmpty() const;
 408
 409     //@{
 410     /**
 411         Moves the rectangle by the specified offset. If @a dx is positive, the
 412         rectangle is moved to the right, if @a dy is positive, it is moved to the
 413         bottom, otherwise it is moved to the left or top respectively.
 414     */
 415     void Offset(wxCoord dx, wxCoord dy);
 416     void Offset(const wxPoint& pt);
 417     //@}
 418
 419     /**
 420         Sets the height.
 421     */
 422     void SetHeight(int height);
 423
 424     /**
 425         Sets the size.
 426
 427         @see GetSize()
 428     */
 429     void SetSize(const wxSize& s);
 430
 431     /**
 432         Sets the width.
 433     */
 434     void SetWidth(int width);
 435
 436     /**
 437         Sets the x position.
 438     */
 439     void SetX(int x);
 440
 441     /**
 442         Sets the y position.
 443     */
 444     void SetY(int y);
 445
 446     //@{
 447     /**
 448         Modifies the rectangle to contain the bounding box of this rectangle
 449         and the one passed in as parameter.
 450     */
 451     wxRect Union(const wxRect& rect) const;
 452     wxRect& Union(const wxRect& rect);
 453     //@}
 454
 455     /**
 456         Inequality operator.
 457     */
 458     bool operator !=(const wxRect& r1, const wxRect& r2);
 459
 460     //@{
 461     /**
 462         Like Union(), but doesn't treat empty rectangles specially.
 463     */
 464     wxRect operator +(const wxRect& r1, const wxRect& r2);
 465     wxRect& operator +=(const wxRect& r);
 466     //@}
 467
 468     //@{
 469     /**
 470         Returns the intersection of two rectangles (which may be empty).
 471     */
 472     wxRect operator *(const wxRect& r1, const wxRect& r2);
 473     wxRect& operator *=(const wxRect& r);
 474     //@}
 475
 476     /**
 477         Assignment operator.
 478     */
 479     wxRect& operator=(const wxRect& rect);
 480
 481     /**
 482         Equality operator.
 483     */
 484     bool operator ==(const wxRect& r1, const wxRect& r2);
 485
 486     /**
 487         Height member.
 488     */
 489     int height;
 490
 491     /**
 492         Width member.
 493     */
 494     int width;
 495
 496     /**
 497         x coordinate of the top-level corner of the rectangle.
 498     */
 499     int x;
 500
 501     /**
 502         y coordinate of the top-level corner of the rectangle.
 503     */
 504     int y;
 505 };
 506
 507
 508
 509 /**
 510     @class wxPoint
 511
 512     A wxPoint is a useful data structure for graphics operations.
 513
 514     It contains integer @e x and @e y members.
 515     See wxRealPoint for a floating point version.
 516
 517     Note that the width and height stored inside a wxPoint object may be negative
 518     and that wxPoint functions do not perform any check against negative values
 519     (this is used to e.g. store the special -1 value in ::wxDefaultPosition instance).
 520
 521     @library{wxcore}
 522     @category{data}
 523
 524     @stdobjects
 525     ::wxDefaultPosition
 526
 527     @see wxRealPoint
 528 */
 529 class wxPoint
 530 {
 531 public:
 532     /**
 533         Constructs a point.
 534         Initializes the internal x and y coordinates to zero.
 535     */
 536     wxPoint();
 537
 538     /**
 539         Initializes the point object with the given @a x and @a y coordinates.
 540     */
 541     wxPoint(int x, int y);
 542
 543     /**
 544         Converts the given wxRealPoint (with floating point coordinates) to a
 545         wxPoint instance.
 546     */
 547     wxPoint(const wxRealPoint& pt);
 548
 549     /**
 550         @name Miscellaneous operators
 551
 552         Note that these operators are documented as class members
 553         (to make them easier to find) but, as their prototype shows,
 554         they are implemented as global operators; note that this is
 555         transparent to the user but it helps to understand why the
 556         following functions are documented to take the wxPoint they
 557         operate on as an explicit argument.
 558     */
 559     //@{
 560     wxPoint& operator=(const wxPoint& pt);
 561
 562     bool operator ==(const wxPoint& p1, const wxPoint& p2);
 563     bool operator !=(const wxPoint& p1, const wxPoint& p2);
 564
 565     wxPoint operator +(const wxPoint& p1, const wxPoint& p2);
 566     wxPoint operator -(const wxPoint& p1, const wxPoint& p2);
 567
 568     wxPoint& operator +=(const wxPoint& pt);
 569     wxPoint& operator -=(const wxPoint& pt);
 570
 571     wxPoint operator +(const wxPoint& pt, const wxSize& sz);
 572     wxPoint operator -(const wxPoint& pt, const wxSize& sz);
 573     wxPoint operator +(const wxSize& sz, const wxPoint& pt);
 574     wxPoint operator -(const wxSize& sz, const wxPoint& pt);
 575
 576     wxPoint& operator +=(const wxSize& sz);
 577     wxPoint& operator -=(const wxSize& sz);
 578
 579     wxSize operator /(const wxPoint& sz, int factor);
 580     wxSize operator *(const wxPoint& sz, int factor);
 581     wxSize operator *(int factor, const wxSize& sz);
 582     wxSize& operator /=(int factor);
 583     wxSize& operator *=(int factor);
 584     //@}
 585
 586     /**
 587         x member.
 588     */
 589     int x;
 590
 591     /**
 592         y member.
 593     */
 594     int  y;
 595 };
 596
 597 /**
 598     Global istance of a wxPoint initialized with values (-1,-1).
 599 */
 600 wxPoint wxDefaultPosition;
 601
 602
 603 /**
 604     @class wxColourDatabase
 605
 606     wxWidgets maintains a database of standard RGB colours for a predefined
 607     set of named colours. The application may add to this set if desired by
 608     using AddColour() and may use it to look up colours by names using Find()
 609     or find the names for the standard colour using FindName().
 610
 611     There is one predefined, global instance of this class called
 612     ::wxTheColourDatabase.
 613
 614     The standard database contains at least the following colours:
 615
 616     @beginTable
 617     <tr><td>
 618        AQUAMARINE
 619     @n BLACK
 620     @n BLUE
 621     @n BLUE VIOLET
 622     @n BROWN
 623     @n CADET BLUE
 624     @n CORAL
 625     @n CORNFLOWER BLUE
 626     @n CYAN
 627     @n DARK GREY
 628     @n DARK GREEN
 629     @n DARK OLIVE GREEN
 630     @n DARK ORCHID
 631     @n DARK SLATE BLUE
 632     @n DARK SLATE GREY
 633     @n DARK TURQUOISE
 634     @n DIM GREY
 635     </td><td>
 636        FIREBRICK
 637     @n FOREST GREEN
 638     @n GOLD
 639     @n GOLDENROD
 640     @n GREY
 641     @n GREEN
 642     @n GREEN YELLOW
 643     @n INDIAN RED
 644     @n KHAKI
 645     @n LIGHT BLUE
 646     @n LIGHT GREY
 647     @n LIGHT STEEL BLUE
 648     @n LIME GREEN
 649     @n MAGENTA
 650     @n MAROON
 651     @n MEDIUM AQUAMARINE
 652     @n MEDIUM BLUE
 653     </td><td>
 654        MEDIUM FOREST GREEN
 655     @n MEDIUM GOLDENROD
 656     @n MEDIUM ORCHID
 657     @n MEDIUM SEA GREEN
 658     @n MEDIUM SLATE BLUE
 659     @n MEDIUM SPRING GREEN
 660     @n MEDIUM TURQUOISE
 661     @n MEDIUM VIOLET RED
 662     @n MIDNIGHT BLUE
 663     @n NAVY
 664     @n ORANGE
 665     @n ORANGE RED
 666     @n ORCHID
 667     @n PALE GREEN
 668     @n PINK
 669     @n PLUM
 670     @n PURPLE
 671     </td><td>
 672        RED
 673     @n SALMON
 674     @n SEA GREEN
 675     @n SIENNA
 676     @n SKY BLUE
 677     @n SLATE BLUE
 678     @n SPRING GREEN
 679     @n STEEL BLUE
 680     @n TAN
 681     @n THISTLE
 682     @n TURQUOISE
 683     @n VIOLET
 684     @n VIOLET RED
 685     @n WHEAT
 686     @n WHITE
 687     @n YELLOW
 688     @n YELLOW GREEN
 689     </td></tr>
 690     @endTable
 691
 692     @library{wxcore}
 693     @category{gdi}
 694
 695     @see wxColour
 696 */
 697 class wxColourDatabase
 698 {
 699 public:
 700     /**
 701         Constructs the colour database. It will be initialized at the first
 702         use.
 703     */
 704     wxColourDatabase();
 705
 706     /**
 707         Adds a colour to the database. If a colour with the same name already
 708         exists, it is replaced.
 709     */
 710     void AddColour(const wxString& colourName, const wxColour& colour);
 711
 712     /**
 713         Finds a colour given the name. Returns an invalid colour object (that
 714         is, wxColour::IsOk() will return @false) if the colour wasn't found in
 715         the database.
 716     */
 717     wxColour Find(const wxString& colourName) const;
 718
 719     /**
 720         Finds a colour name given the colour. Returns an empty string if the
 721         colour is not found in the database.
 722     */
 723     wxString FindName(const wxColour& colour) const;
 724 };
 725
 726
 727 /**
 728     Global istance of a wxColourDatabase.
 729 */
 730 wxColourDatabase* wxTheColourDatabase;
 731
 732
 733 /**
 734     @class wxSize
 735
 736     A wxSize is a useful data structure for graphics operations.
 737     It simply contains integer @e width and @e height members.
 738
 739     Note that the width and height stored inside a wxSize object may be negative
 740     and that wxSize functions do not perform any check against negative values
 741     (this is used to e.g. store the special -1 value in ::wxDefaultSize instance).
 742     See also IsFullySpecified() and SetDefaults() for utility functions regarding
 743     the special -1 value.
 744
 745     wxSize is used throughout wxWidgets as well as wxPoint which, although
 746     almost equivalent to wxSize, has a different meaning: wxPoint represents a
 747     position while wxSize represents the size.
 748
 749     @beginWxPythonOnly
 750     wxPython defines aliases for the @e x and @e y members named @e width and
 751     @e height since it makes much more sense for sizes.
 752     @endWxPythonOnly
 753
 754     @library{wxcore}
 755     @category{data}
 756
 757     @stdobjects
 758     ::wxDefaultSize
 759
 760     @see wxPoint, wxRealPoint
 761 */
 762 class wxSize
 763 {
 764 public:
 765     /**
 766         Initializes this size object with zero width and height.
 767     */
 768     wxSize();
 769
 770     /**
 771         Initializes this size object with the given @a width and @a height.
 772     */
 773     wxSize(int width, int height);
 774
 775     //@{
 776     /**
 777         Decreases the size in both x and y directions.
 778
 779         @see IncBy()
 780     */
 781     void DecBy(const wxPoint& pt);
 782     void DecBy(const wxSize& size);
 783     void DecBy(int dx, int dy);
 784     void DecBy(int d);
 785     //@}
 786
 787     /**
 788         Decrements this object so that both of its dimensions are not greater
 789         than the corresponding dimensions of the @a size.
 790
 791         @see IncTo()
 792     */
 793     void DecTo(const wxSize& size);
 794
 795     /**
 796         Gets the height member.
 797     */
 798     int GetHeight() const;
 799
 800     /**
 801         Gets the width member.
 802     */
 803     int GetWidth() const;
 804
 805     //@{
 806     /**
 807         Increases the size in both x and y directions.
 808
 809         @see DecBy()
 810     */
 811     void IncBy(const wxPoint& pt);
 812     void IncBy(const wxSize& size);
 813     void IncBy(int dx, int dy);
 814     void IncBy(int d);
 815     //@}
 816
 817     /**
 818         Increments this object so that both of its dimensions are not less than
 819         the corresponding dimensions of the @a size.
 820
 821         @see DecTo()
 822     */
 823     void IncTo(const wxSize& size);
 824
 825     /**
 826         Returns @true if neither of the size object components is equal to -1,
 827         which is used as default for the size values in wxWidgets (hence the
 828         predefined ::wxDefaultSize has both of its components equal to -1).
 829
 830         This method is typically used before calling SetDefaults().
 831     */
 832     bool IsFullySpecified() const;
 833
 834     /**
 835         Scales the dimensions of this object by the given factors. If you want
 836         to scale both dimensions by the same factor you can also use
 837         operator*=().
 838
 839         @return A reference to this object (so that you can concatenate other
 840                  operations in the same line).
 841     */
 842     wxSize& Scale(float xscale, float yscale);
 843
 844     /**
 845         Sets the width and height members.
 846     */
 847     void Set(int width, int height);
 848
 849     /**
 850         Combine this size object with another one replacing the default (i.e.
 851         equal to -1) components of this object with those of the other. It is
 852         typically used like this:
 853
 854         @code
 855         if ( !size.IsFullySpecified() )
 856         {
 857             size.SetDefaults(GetDefaultSize());
 858         }
 859         @endcode
 860
 861         @see IsFullySpecified()
 862     */
 863     void SetDefaults(const wxSize& sizeDefault);
 864
 865     /**
 866         Sets the height.
 867     */
 868     void SetHeight(int height);
 869
 870     /**
 871         Sets the width.
 872     */
 873     void SetWidth(int width);
 874
 875
 876     /**
 877         @name Miscellaneous operators
 878
 879         Note that these operators are documented as class members
 880         (to make them easier to find) but, as their prototype shows,
 881         they are implemented as global operators; note that this is
 882         transparent to the user but it helps to understand why the
 883         following functions are documented to take the wxSize they
 884         operate on as an explicit argument.
 885     */
 886     //@{
 887     wxSize& operator=(const wxSize& sz);
 888
 889     bool operator ==(const wxSize& s1, const wxSize& s2);
 890     bool operator !=(const wxSize& s1, const wxSize& s2);
 891
 892     wxSize operator +(const wxSize& s1, const wxSize& s2);
 893     wxSize operator -(const wxSize& s1, const wxSize& s2);
 894     wxSize& operator +=(const wxSize& sz);
 895     wxSize& operator -=(const wxSize& sz);
 896
 897     wxSize operator /(const wxSize& sz, int factor);
 898     wxSize operator *(const wxSize& sz, int factor);
 899     wxSize operator *(int factor, const wxSize& sz);
 900     wxSize& operator /=(int factor);
 901     wxSize& operator *=(int factor);
 902     //@}
 903 };
 904
 905 /**
 906     Global instance of a wxSize object initialized to (-1,-1).
 907 */
 908 wxSize wxDefaultSize;
 909
 910
 911
 912
 913 // ============================================================================
 914 // Global functions/macros
 915 // ============================================================================
 916
 917 /** @addtogroup group_funcmacro_gdi */
 918 //@{
 919
 920 /**
 921     This macro loads a bitmap from either application resources (on the
 922     platforms for which they exist, i.e. Windows and OS2) or from an XPM file.
 923     This can help to avoid using @ifdef_ when creating bitmaps.
 924
 925     @see @ref overview_bitmap, wxICON()
 926
 927     @header{wx/gdicmn.h}
 928 */
 929 #define wxBITMAP(bitmapName)
 930
 931 /**
 932     This macro loads an icon from either application resources (on the
 933     platforms for which they exist, i.e. Windows and OS2) or from an XPM file.
 934     This can help to avoid using @ifdef_ when creating icons.
 935
 936     @see @ref overview_bitmap, wxBITMAP()
 937
 938     @header{wx/gdicmn.h}
 939 */
 940 #define wxICON(iconName)
 941
 942 /**
 943     Returns @true if the display is colour, @false otherwise.
 944
 945     @header{wx/gdicmn.h}
 946 */
 947 bool wxColourDisplay();
 948
 949 /**
 950     Returns the depth of the display (a value of 1 denotes a monochrome
 951     display).
 952
 953     @header{wx/gdicmn.h}
 954 */
 955 int wxDisplayDepth();
 956
 957 /**
 958     Globally sets the cursor; only has an effect on Windows, Mac and GTK+. You
 959     should call this function with wxNullCursor to restore the system cursor.
 960
 961     @see wxCursor, wxWindow::SetCursor()
 962
 963     @header{wx/gdicmn.h}
 964 */
 965 void wxSetCursor(const wxCursor& cursor);
 966
 967 //@}
 968
 969 /** @addtogroup group_funcmacro_gdi */
 970 //@{
 971 /**
 972     Returns the dimensions of the work area on the display. On Windows this
 973     means the area not covered by the taskbar, etc. Other platforms are
 974     currently defaulting to the whole display until a way is found to provide
 975     this info for all window managers, etc.
 976
 977     @header{wx/gdicmn.h}
 978 */
 979 void wxClientDisplayRect(int* x, int* y, int* width, int* height);
 980 wxRect wxGetClientDisplayRect();
 981 //@}
 982
 983 /** @addtogroup group_funcmacro_gdi */
 984 //@{
 985 /**
 986     Returns the display resolution in pixels per inch.
 987
 988     The @c x component of the returned wxSize object contains the horizontal
 989     resolution and the @c y one -- the vertical resolution.
 990
 991     @header{wx/gdicmn.h}
 992
 993     @since 2.9.0
 994 */
 995 wxSize wxGetDisplayPPI();
 996 //@}
 997
 998 /** @addtogroup group_funcmacro_gdi */
 999 //@{
1000 /**
1001     Returns the display size in pixels.
1002
1003     For the version taking @a width and @a header arguments, either of them
1004     can be @NULL if the caller is not interested in the returned value.
1005
1006     @header{wx/gdicmn.h}
1007 */
1008 void wxDisplaySize(int* width, int* height);
1009 wxSize wxGetDisplaySize();
1010 //@}
1011
1012 /** @addtogroup group_funcmacro_gdi */
1013 //@{
1014 /**
1015     Returns the display size in millimeters.
1016
1017     For the version taking @a width and @a header arguments, either of them
1018     can be @NULL if the caller is not interested in the returned value.
1019
1020     @see wxGetDisplayPPI()
1021
1022     @header{wx/gdicmn.h}
1023 */
1024 void wxDisplaySizeMM(int* width, int* height);
1025 wxSize wxGetDisplaySizeMM();
1026 //@}
1027