dlls/gdiplus/gdiplus_private.h

   1 /*
   2  * Copyright (C) 2007 Google (Evan Stade)
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #ifndef __WINE_GP_PRIVATE_H_
  20 #define __WINE_GP_PRIVATE_H_
  21
  22 #include <math.h>
  23 #include <stdarg.h>
  24
  25 #include "windef.h"
  26 #include "wingdi.h"
  27 #include "winbase.h"
  28 #include "winuser.h"
  29
  30 #include "objbase.h"
  31 #include "ocidl.h"
  32 #include "wincodecsdk.h"
  33 #include "wine/list.h"
  34
  35 #include "gdiplus.h"
  36
  37 #define GP_DEFAULT_PENSTYLE (PS_GEOMETRIC | PS_SOLID | PS_ENDCAP_FLAT | PS_JOIN_MITER)
  38 #define MAX_ARC_PTS (13)
  39 #define MAX_DASHLEN (16) /* this is a limitation of gdi */
  40 #define INCH_HIMETRIC (2540)
  41
  42 #define VERSION_MAGIC 0xdbc01001
  43 #define TENSION_CONST (0.3)
  44
  45 COLORREF ARGB2COLORREF(ARGB color) DECLSPEC_HIDDEN;
  46 HBITMAP ARGB2BMP(ARGB color) DECLSPEC_HIDDEN;
  47 extern INT arc2polybezier(GpPointF * points, REAL x1, REAL y1, REAL x2, REAL y2,
  48     REAL startAngle, REAL sweepAngle) DECLSPEC_HIDDEN;
  49 extern REAL gdiplus_atan2(REAL dy, REAL dx) DECLSPEC_HIDDEN;
  50 extern GpStatus hresult_to_status(HRESULT res) DECLSPEC_HIDDEN;
  51 extern REAL units_to_pixels(REAL units, GpUnit unit, REAL dpi) DECLSPEC_HIDDEN;
  52 extern REAL pixels_to_units(REAL pixels, GpUnit unit, REAL dpi) DECLSPEC_HIDDEN;
  53 extern REAL units_scale(GpUnit from, GpUnit to, REAL dpi) DECLSPEC_HIDDEN;
  54
  55 extern GpStatus graphics_from_image(GpImage *image, GpGraphics **graphics) DECLSPEC_HIDDEN;
  56
  57 extern GpStatus METAFILE_GetGraphicsContext(GpMetafile* metafile, GpGraphics **result) DECLSPEC_HIDDEN;
  58 extern GpStatus METAFILE_GetDC(GpMetafile* metafile, HDC *hdc) DECLSPEC_HIDDEN;
  59 extern GpStatus METAFILE_ReleaseDC(GpMetafile* metafile, HDC hdc) DECLSPEC_HIDDEN;
  60 extern GpStatus METAFILE_GraphicsDeleted(GpMetafile* metafile) DECLSPEC_HIDDEN;
  61 extern MetafileType METAFILE_GetEmfType(HENHMETAFILE hemf) DECLSPEC_HIDDEN;
  62
  63 extern void calc_curve_bezier(const GpPointF *pts, REAL tension, REAL *x1,
  64     REAL *y1, REAL *x2, REAL *y2) DECLSPEC_HIDDEN;
  65 extern void calc_curve_bezier_endp(REAL xend, REAL yend, REAL xadj, REAL yadj,
  66     REAL tension, REAL *x, REAL *y) DECLSPEC_HIDDEN;
  67
  68 extern void free_installed_fonts(void) DECLSPEC_HIDDEN;
  69
  70 extern BOOL lengthen_path(GpPath *path, INT len) DECLSPEC_HIDDEN;
  71
  72 extern GpStatus trace_path(GpGraphics *graphics, GpPath *path) DECLSPEC_HIDDEN;
  73
  74 typedef struct region_element region_element;
  75 extern void delete_element(region_element *element) DECLSPEC_HIDDEN;
  76
  77 extern GpStatus get_hatch_data(HatchStyle hatchstyle, const char **result) DECLSPEC_HIDDEN;
  78
  79 static inline INT gdip_round(REAL x)
  80 {
  81     return (INT) floorf(x + 0.5);
  82 }
  83
  84 static inline INT ceilr(REAL x)
  85 {
  86     return (INT) ceilf(x);
  87 }
  88
  89 static inline REAL deg2rad(REAL degrees)
  90 {
  91     return M_PI * degrees / 180.0;
  92 }
  93
  94 static inline ARGB color_over(ARGB bg, ARGB fg)
  95 {
  96     BYTE b, g, r, a;
  97     BYTE bg_alpha, fg_alpha;
  98
  99     fg_alpha = (fg>>24)&0xff;
 100
 101     if (fg_alpha == 0xff) return fg;
 102
 103     if (fg_alpha == 0) return bg;
 104
 105     bg_alpha = (((bg>>24)&0xff) * (0xff-fg_alpha)) / 0xff;
 106
 107     if (bg_alpha == 0) return fg;
 108
 109     a = bg_alpha + fg_alpha;
 110     b = ((bg&0xff)*bg_alpha + (fg&0xff)*fg_alpha)/a;
 111     g = (((bg>>8)&0xff)*bg_alpha + ((fg>>8)&0xff)*fg_alpha)/a;
 112     r = (((bg>>16)&0xff)*bg_alpha + ((fg>>16)&0xff)*fg_alpha)/a;
 113
 114     return (a<<24)|(r<<16)|(g<<8)|b;
 115 }
 116
 117 extern const char *debugstr_rectf(const RectF* rc) DECLSPEC_HIDDEN;
 118
 119 extern const char *debugstr_pointf(const PointF* pt) DECLSPEC_HIDDEN;
 120
 121 extern void convert_32bppARGB_to_32bppPARGB(UINT width, UINT height,
 122     BYTE *dst_bits, INT dst_stride, const BYTE *src_bits, INT src_stride) DECLSPEC_HIDDEN;
 123
 124 extern GpStatus convert_pixels(INT width, INT height,
 125     INT dst_stride, BYTE *dst_bits, PixelFormat dst_format,
 126     INT src_stride, const BYTE *src_bits, PixelFormat src_format, ColorPalette *palette) DECLSPEC_HIDDEN;
 127
 128 struct GpMatrix{
 129     REAL matrix[6];
 130 };
 131
 132 struct GpPen{
 133     UINT style;
 134     GpUnit unit;
 135     REAL width;
 136     GpLineCap endcap;
 137     GpLineCap startcap;
 138     GpDashCap dashcap;
 139     GpCustomLineCap *customstart;
 140     GpCustomLineCap *customend;
 141     GpLineJoin join;
 142     REAL miterlimit;
 143     GpDashStyle dash;
 144     REAL *dashes;
 145     INT numdashes;
 146     REAL offset;    /* dash offset */
 147     GpBrush *brush;
 148     GpPenAlignment align;
 149 };
 150
 151 struct GpGraphics{
 152     HDC hdc;
 153     HWND hwnd;
 154     BOOL owndc;
 155     BOOL alpha_hdc;
 156     GpImage *image;
 157     ImageType image_type;
 158     SmoothingMode smoothing;
 159     CompositingQuality compqual;
 160     InterpolationMode interpolation;
 161     PixelOffsetMode pixeloffset;
 162     CompositingMode compmode;
 163     TextRenderingHint texthint;
 164     GpUnit unit;    /* page unit */
 165     REAL scale;     /* page scale */
 166     REAL xres, yres;
 167     GpMatrix worldtrans; /* world transform */
 168     BOOL busy;      /* hdc handle obtained by GdipGetDC */
 169     GpRegion *clip; /* in device coords */
 170     UINT textcontrast; /* not used yet. get/set only */
 171     struct list containers;
 172     GraphicsContainer contid; /* last-issued container ID */
 173     INT origin_x, origin_y;
 174     /* For giving the caller an HDC when we technically can't: */
 175     HBITMAP temp_hbitmap;
 176     int temp_hbitmap_width;
 177     int temp_hbitmap_height;
 178     BYTE *temp_bits;
 179     HDC temp_hdc;
 180 };
 181
 182 struct GpBrush{
 183     GpBrushType bt;
 184 };
 185
 186 struct GpHatch{
 187     GpBrush brush;
 188     HatchStyle hatchstyle;
 189     ARGB forecol;
 190     ARGB backcol;
 191 };
 192
 193 struct GpSolidFill{
 194     GpBrush brush;
 195     ARGB color;
 196 };
 197
 198 struct GpPathGradient{
 199     GpBrush brush;
 200     GpPath* path;
 201     ARGB centercolor;
 202     GpWrapMode wrap;
 203     BOOL gamma;
 204     GpPointF center;
 205     GpPointF focus;
 206     REAL* blendfac;  /* blend factors */
 207     REAL* blendpos;  /* blend positions */
 208     INT blendcount;
 209     ARGB *surroundcolors;
 210     INT surroundcolorcount;
 211     ARGB* pblendcolor; /* preset blend colors */
 212     REAL* pblendpos; /* preset blend positions */
 213     INT pblendcount;
 214     GpMatrix transform;
 215 };
 216
 217 struct GpLineGradient{
 218     GpBrush brush;
 219     GpPointF startpoint;
 220     GpPointF endpoint;
 221     ARGB startcolor;
 222     ARGB endcolor;
 223     RectF rect;
 224     GpWrapMode wrap;
 225     BOOL gamma;
 226     REAL* blendfac;  /* blend factors */
 227     REAL* blendpos;  /* blend positions */
 228     INT blendcount;
 229     ARGB* pblendcolor; /* preset blend colors */
 230     REAL* pblendpos; /* preset blend positions */
 231     INT pblendcount;
 232 };
 233
 234 struct GpTexture{
 235     GpBrush brush;
 236     GpMatrix transform;
 237     GpImage *image;
 238     GpImageAttributes *imageattributes;
 239     BYTE *bitmap_bits; /* image bits converted to ARGB and run through imageattributes */
 240 };
 241
 242 struct GpPath{
 243     GpFillMode fill;
 244     GpPathData pathdata;
 245     BOOL newfigure; /* whether the next drawing action starts a new figure */
 246     INT datalen; /* size of the arrays in pathdata */
 247 };
 248
 249 struct GpPathIterator{
 250     GpPathData pathdata;
 251     INT subpath_pos;    /* for NextSubpath methods */
 252     INT marker_pos;     /* for NextMarker methods */
 253     INT pathtype_pos;   /* for NextPathType methods */
 254 };
 255
 256 struct GpCustomLineCap{
 257     GpPathData pathdata;
 258     BOOL fill;      /* TRUE for fill, FALSE for stroke */
 259     GpLineCap cap;  /* as far as I can tell, this value is ignored */
 260     REAL inset;     /* how much to adjust the end of the line */
 261     GpLineJoin join;
 262     REAL scale;
 263 };
 264
 265 struct GpAdustableArrowCap{
 266     GpCustomLineCap cap;
 267 };
 268
 269 struct GpImage{
 270     IPicture *picture;
 271     IStream *stream; /* source stream */
 272     ImageType type;
 273     GUID format;
 274     UINT flags;
 275     UINT frame_count, current_frame;
 276     ColorPalette *palette;
 277     REAL xres, yres;
 278 };
 279
 280 struct GpMetafile{
 281     GpImage image;
 282     GpRectF bounds;
 283     GpUnit unit;
 284     MetafileType metafile_type;
 285     HENHMETAFILE hemf;
 286     int preserve_hemf; /* if true, hemf belongs to the app and should not be deleted */
 287
 288     /* recording */
 289     HDC record_dc;
 290     GpGraphics *record_graphics;
 291     BYTE *comment_data;
 292     DWORD comment_data_size;
 293     DWORD comment_data_length;
 294
 295     /* playback */
 296     GpGraphics *playback_graphics;
 297     HDC playback_dc;
 298     GpPointF playback_points[3];
 299     HANDLETABLE *handle_table;
 300     int handle_count;
 301 };
 302
 303 struct GpBitmap{
 304     GpImage image;
 305     INT width;
 306     INT height;
 307     PixelFormat format;
 308     ImageLockMode lockmode;
 309     INT numlocks;
 310     BYTE *bitmapbits;   /* pointer to the buffer we passed in BitmapLockBits */
 311     HBITMAP hbitmap;
 312     HDC hdc;
 313     BYTE *bits; /* actual image bits if this is a DIB */
 314     INT stride; /* stride of bits if this is a DIB */
 315     BYTE *own_bits; /* image bits that need to be freed with this object */
 316     INT lockx, locky; /* X and Y coordinates of the rect when a bitmap is locked for writing. */
 317     IWICMetadataReader *metadata_reader; /* NULL if there is no metadata */
 318     UINT prop_count;
 319     PropertyItem *prop_item; /* cached image properties */
 320 };
 321
 322 struct GpCachedBitmap{
 323     GpImage *image;
 324 };
 325
 326 struct color_key{
 327     BOOL enabled;
 328     ARGB low;
 329     ARGB high;
 330 };
 331
 332 struct color_matrix{
 333     BOOL enabled;
 334     ColorMatrixFlags flags;
 335     ColorMatrix colormatrix;
 336     ColorMatrix graymatrix;
 337 };
 338
 339 struct color_remap_table{
 340     BOOL enabled;
 341     INT mapsize;
 342     ColorMap *colormap;
 343 };
 344
 345 struct GpImageAttributes{
 346     WrapMode wrap;
 347     ARGB outside_color;
 348     BOOL clamp;
 349     struct color_key colorkeys[ColorAdjustTypeCount];
 350     struct color_matrix colormatrices[ColorAdjustTypeCount];
 351     struct color_remap_table colorremaptables[ColorAdjustTypeCount];
 352     BOOL gamma_enabled[ColorAdjustTypeCount];
 353     REAL gamma[ColorAdjustTypeCount];
 354 };
 355
 356 struct GpFont{
 357     GpFontFamily *family;
 358     OUTLINETEXTMETRICW otm;
 359     REAL emSize; /* in font units */
 360     Unit unit;
 361 };
 362
 363 struct GpStringFormat{
 364     INT attr;
 365     LANGID lang;
 366     LANGID digitlang;
 367     StringAlignment align;
 368     StringTrimming trimming;
 369     HotkeyPrefix hkprefix;
 370     StringAlignment vertalign;
 371     StringDigitSubstitute digitsub;
 372     INT tabcount;
 373     REAL firsttab;
 374     REAL *tabs;
 375     CharacterRange *character_ranges;
 376     INT range_count;
 377     BOOL generic_typographic;
 378 };
 379
 380 struct GpFontCollection{
 381     GpFontFamily **FontFamilies;
 382     INT count;
 383     INT allocated;
 384 };
 385
 386 struct GpFontFamily{
 387     WCHAR FamilyName[LF_FACESIZE];
 388     UINT16 em_height, ascent, descent, line_spacing; /* in font units */
 389     int dpi;
 390 };
 391
 392 /* internal use */
 393 typedef enum RegionType
 394 {
 395     RegionDataRect          = 0x10000000,
 396     RegionDataPath          = 0x10000001,
 397     RegionDataEmptyRect     = 0x10000002,
 398     RegionDataInfiniteRect  = 0x10000003,
 399 } RegionType;
 400
 401 struct region_element
 402 {
 403     DWORD type; /* Rectangle, Path, SpecialRectangle, or CombineMode */
 404     union
 405     {
 406         GpRectF rect;
 407         struct
 408         {
 409             GpPath* path;
 410             struct
 411             {
 412                 DWORD size;
 413                 DWORD magic;
 414                 DWORD count;
 415                 DWORD flags;
 416             } pathheader;
 417         } pathdata;
 418         struct
 419         {
 420             struct region_element *left;  /* the original region */
 421             struct region_element *right; /* what *left was combined with */
 422         } combine;
 423     } elementdata;
 424 };
 425
 426 struct GpRegion{
 427     struct
 428     {
 429         DWORD size;
 430         DWORD checksum;
 431         DWORD magic;
 432         DWORD num_children;
 433     } header;
 434     region_element node;
 435 };
 436
 437 typedef GpStatus (*gdip_format_string_callback)(HDC hdc,
 438     GDIPCONST WCHAR *string, INT index, INT length, GDIPCONST GpFont *font,
 439     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format,
 440     INT lineno, const RectF *bounds, INT *underlined_indexes,
 441     INT underlined_index_count, void *user_data);
 442
 443 GpStatus gdip_format_string(HDC hdc,
 444     GDIPCONST WCHAR *string, INT length, GDIPCONST GpFont *font,
 445     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format, int ignore_empty_clip,
 446     gdip_format_string_callback callback, void *user_data) DECLSPEC_HIDDEN;
 447
 448 void get_log_fontW(const GpFont *, GpGraphics *, LOGFONTW *) DECLSPEC_HIDDEN;
 449
 450 #endif