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 "wine/list.h"
  33
  34 #include "gdiplus.h"
  35
  36 #define GP_DEFAULT_PENSTYLE (PS_GEOMETRIC | PS_SOLID | PS_ENDCAP_FLAT | PS_JOIN_MITER)
  37 #define MAX_ARC_PTS (13)
  38 #define MAX_DASHLEN (16) /* this is a limitation of gdi */
  39 #define INCH_HIMETRIC (2540)
  40
  41 #define VERSION_MAGIC 0xdbc01001
  42 #define TENSION_CONST (0.3)
  43
  44 COLORREF ARGB2COLORREF(ARGB color);
  45 HBITMAP ARGB2BMP(ARGB color);
  46 extern INT arc2polybezier(GpPointF * points, REAL x1, REAL y1, REAL x2, REAL y2,
  47     REAL startAngle, REAL sweepAngle);
  48 extern REAL gdiplus_atan2(REAL dy, REAL dx);
  49 extern GpStatus hresult_to_status(HRESULT res);
  50 extern REAL convert_unit(REAL logpixels, GpUnit unit);
  51
  52 extern GpStatus graphics_from_image(GpImage *image, GpGraphics **graphics);
  53
  54 extern void calc_curve_bezier(CONST GpPointF *pts, REAL tension, REAL *x1,
  55     REAL *y1, REAL *x2, REAL *y2);
  56 extern void calc_curve_bezier_endp(REAL xend, REAL yend, REAL xadj, REAL yadj,
  57     REAL tension, REAL *x, REAL *y);
  58
  59 extern void free_installed_fonts(void);
  60
  61 extern BOOL lengthen_path(GpPath *path, INT len);
  62
  63 extern GpStatus trace_path(GpGraphics *graphics, GpPath *path);
  64
  65 typedef struct region_element region_element;
  66 extern void delete_element(region_element *element);
  67
  68 extern GpStatus get_hatch_data(HatchStyle hatchstyle, const char **result);
  69
  70 static inline INT roundr(REAL x)
  71 {
  72     return (INT) floorf(x + 0.5);
  73 }
  74
  75 static inline INT ceilr(REAL x)
  76 {
  77     return (INT) ceilf(x);
  78 }
  79
  80 static inline REAL deg2rad(REAL degrees)
  81 {
  82     return M_PI * degrees / 180.0;
  83 }
  84
  85 static inline ARGB color_over(ARGB bg, ARGB fg)
  86 {
  87     BYTE b, g, r, a;
  88     BYTE bg_alpha, fg_alpha;
  89
  90     fg_alpha = (fg>>24)&0xff;
  91
  92     if (fg_alpha == 0xff) return fg;
  93
  94     if (fg_alpha == 0) return bg;
  95
  96     bg_alpha = (((bg>>24)&0xff) * (0xff-fg_alpha)) / 0xff;
  97
  98     if (bg_alpha == 0) return fg;
  99
 100     a = bg_alpha + fg_alpha;
 101     b = ((bg&0xff)*bg_alpha + (fg&0xff)*fg_alpha)/a;
 102     g = (((bg>>8)&0xff)*bg_alpha + ((fg>>8)&0xff)*fg_alpha)/a;
 103     r = (((bg>>16)&0xff)*bg_alpha + ((fg>>16)&0xff)*fg_alpha)/a;
 104
 105     return (a<<24)|(r<<16)|(g<<8)|b;
 106 }
 107
 108 extern const char *debugstr_rectf(CONST RectF* rc);
 109
 110 extern const char *debugstr_pointf(CONST PointF* pt);
 111
 112 extern void convert_32bppARGB_to_32bppPARGB(UINT width, UINT height,
 113     BYTE *dst_bits, INT dst_stride, const BYTE *src_bits, INT src_stride);
 114
 115 extern GpStatus convert_pixels(INT width, INT height,
 116     INT dst_stride, BYTE *dst_bits, PixelFormat dst_format,
 117     INT src_stride, const BYTE *src_bits, PixelFormat src_format, ARGB *src_palette);
 118
 119 struct GpPen{
 120     UINT style;
 121     GpUnit unit;
 122     REAL width;
 123     GpLineCap endcap;
 124     GpLineCap startcap;
 125     GpDashCap dashcap;
 126     GpCustomLineCap *customstart;
 127     GpCustomLineCap *customend;
 128     GpLineJoin join;
 129     REAL miterlimit;
 130     GpDashStyle dash;
 131     REAL *dashes;
 132     INT numdashes;
 133     REAL offset;    /* dash offset */
 134     GpBrush *brush;
 135     GpPenAlignment align;
 136 };
 137
 138 struct GpGraphics{
 139     HDC hdc;
 140     HWND hwnd;
 141     BOOL owndc;
 142     GpImage *image;
 143     SmoothingMode smoothing;
 144     CompositingQuality compqual;
 145     InterpolationMode interpolation;
 146     PixelOffsetMode pixeloffset;
 147     CompositingMode compmode;
 148     TextRenderingHint texthint;
 149     GpUnit unit;    /* page unit */
 150     REAL scale;     /* page scale */
 151     GpMatrix * worldtrans; /* world transform */
 152     BOOL busy;      /* hdc handle obtained by GdipGetDC */
 153     GpRegion *clip;
 154     UINT textcontrast; /* not used yet. get/set only */
 155     struct list containers;
 156     GraphicsContainer contid; /* last-issued container ID */
 157     /* For giving the caller an HDC when we technically can't: */
 158     HBITMAP temp_hbitmap;
 159     int temp_hbitmap_width;
 160     int temp_hbitmap_height;
 161     BYTE *temp_bits;
 162     HDC temp_hdc;
 163 };
 164
 165 struct GpBrush{
 166     HBRUSH gdibrush;
 167     GpBrushType bt;
 168     LOGBRUSH lb;
 169 };
 170
 171 struct GpHatch{
 172     GpBrush brush;
 173     HatchStyle hatchstyle;
 174     ARGB forecol;
 175     ARGB backcol;
 176 };
 177
 178 struct GpSolidFill{
 179     GpBrush brush;
 180     ARGB color;
 181     HBITMAP bmp;
 182 };
 183
 184 struct GpPathGradient{
 185     GpBrush brush;
 186     PathData pathdata;
 187     ARGB centercolor;
 188     GpWrapMode wrap;
 189     BOOL gamma;
 190     GpPointF center;
 191     GpPointF focus;
 192     REAL* blendfac;  /* blend factors */
 193     REAL* blendpos;  /* blend positions */
 194     INT blendcount;
 195 };
 196
 197 struct GpLineGradient{
 198     GpBrush brush;
 199     GpPointF startpoint;
 200     GpPointF endpoint;
 201     ARGB startcolor;
 202     ARGB endcolor;
 203     RectF rect;
 204     GpWrapMode wrap;
 205     BOOL gamma;
 206     REAL* blendfac;  /* blend factors */
 207     REAL* blendpos;  /* blend positions */
 208     INT blendcount;
 209     ARGB* pblendcolor; /* preset blend colors */
 210     REAL* pblendpos; /* preset blend positions */
 211     INT pblendcount;
 212 };
 213
 214 struct GpTexture{
 215     GpBrush brush;
 216     GpMatrix *transform;
 217     GpImage *image;
 218     GpImageAttributes *imageattributes;
 219     BYTE *bitmap_bits; /* image bits converted to ARGB and run through imageattributes */
 220 };
 221
 222 struct GpPath{
 223     GpFillMode fill;
 224     GpPathData pathdata;
 225     BOOL newfigure; /* whether the next drawing action starts a new figure */
 226     INT datalen; /* size of the arrays in pathdata */
 227 };
 228
 229 struct GpMatrix{
 230     REAL matrix[6];
 231 };
 232
 233 struct GpPathIterator{
 234     GpPathData pathdata;
 235     INT subpath_pos;    /* for NextSubpath methods */
 236     INT marker_pos;     /* for NextMarker methods */
 237     INT pathtype_pos;   /* for NextPathType methods */
 238 };
 239
 240 struct GpCustomLineCap{
 241     GpPathData pathdata;
 242     BOOL fill;      /* TRUE for fill, FALSE for stroke */
 243     GpLineCap cap;  /* as far as I can tell, this value is ignored */
 244     REAL inset;     /* how much to adjust the end of the line */
 245     GpLineJoin join;
 246     REAL scale;
 247 };
 248
 249 struct GpAdustableArrowCap{
 250     GpCustomLineCap cap;
 251 };
 252
 253 struct GpImage{
 254     IPicture* picture;
 255     ImageType type;
 256     GUID format;
 257     UINT flags;
 258     UINT palette_flags;
 259     UINT palette_count;
 260     UINT palette_size;
 261     ARGB *palette_entries;
 262     REAL xres, yres;
 263 };
 264
 265 struct GpMetafile{
 266     GpImage image;
 267     GpRectF bounds;
 268     GpUnit unit;
 269 };
 270
 271 struct GpBitmap{
 272     GpImage image;
 273     INT width;
 274     INT height;
 275     PixelFormat format;
 276     ImageLockMode lockmode;
 277     INT numlocks;
 278     BYTE *bitmapbits;   /* pointer to the buffer we passed in BitmapLockBits */
 279     HBITMAP hbitmap;
 280     HDC hdc;
 281     BYTE *bits; /* actual image bits if this is a DIB */
 282     INT stride; /* stride of bits if this is a DIB */
 283     BYTE *own_bits; /* image bits that need to be freed with this object */
 284     INT lockx, locky; /* X and Y coordinates of the rect when a bitmap is locked for writing. */
 285 };
 286
 287 struct GpCachedBitmap{
 288     GpImage *image;
 289 };
 290
 291 struct color_key{
 292     BOOL enabled;
 293     ARGB low;
 294     ARGB high;
 295 };
 296
 297 struct color_matrix{
 298     BOOL enabled;
 299     ColorMatrixFlags flags;
 300     ColorMatrix colormatrix;
 301     ColorMatrix graymatrix;
 302 };
 303
 304 struct color_remap_table{
 305     BOOL enabled;
 306     INT mapsize;
 307     GDIPCONST ColorMap *colormap;
 308 };
 309
 310 struct GpImageAttributes{
 311     WrapMode wrap;
 312     ARGB outside_color;
 313     BOOL clamp;
 314     struct color_key colorkeys[ColorAdjustTypeCount];
 315     struct color_matrix colormatrices[ColorAdjustTypeCount];
 316     struct color_remap_table colorremaptables[ColorAdjustTypeCount];
 317     BOOL gamma_enabled[ColorAdjustTypeCount];
 318     REAL gamma[ColorAdjustTypeCount];
 319 };
 320
 321 struct GpFont{
 322     LOGFONTW lfw;
 323     REAL emSize;
 324     UINT height;
 325     LONG line_spacing;
 326     Unit unit;
 327 };
 328
 329 struct GpStringFormat{
 330     INT attr;
 331     LANGID lang;
 332     LANGID digitlang;
 333     StringAlignment align;
 334     StringTrimming trimming;
 335     HotkeyPrefix hkprefix;
 336     StringAlignment vertalign;
 337     StringDigitSubstitute digitsub;
 338     INT tabcount;
 339     REAL firsttab;
 340     REAL *tabs;
 341     CharacterRange *character_ranges;
 342     INT range_count;
 343 };
 344
 345 struct GpFontCollection{
 346     GpFontFamily **FontFamilies;
 347     INT count;
 348     INT allocated;
 349 };
 350
 351 struct GpFontFamily{
 352     NEWTEXTMETRICW tmw;
 353     WCHAR FamilyName[LF_FACESIZE];
 354 };
 355
 356 /* internal use */
 357 typedef enum RegionType
 358 {
 359     RegionDataRect          = 0x10000000,
 360     RegionDataPath          = 0x10000001,
 361     RegionDataEmptyRect     = 0x10000002,
 362     RegionDataInfiniteRect  = 0x10000003,
 363 } RegionType;
 364
 365 struct region_element
 366 {
 367     DWORD type; /* Rectangle, Path, SpecialRectangle, or CombineMode */
 368     union
 369     {
 370         GpRectF rect;
 371         struct
 372         {
 373             GpPath* path;
 374             struct
 375             {
 376                 DWORD size;
 377                 DWORD magic;
 378                 DWORD count;
 379                 DWORD flags;
 380             } pathheader;
 381         } pathdata;
 382         struct
 383         {
 384             struct region_element *left;  /* the original region */
 385             struct region_element *right; /* what *left was combined with */
 386         } combine;
 387     } elementdata;
 388 };
 389
 390 struct GpRegion{
 391     struct
 392     {
 393         DWORD size;
 394         DWORD checksum;
 395         DWORD magic;
 396         DWORD num_children;
 397     } header;
 398     region_element node;
 399 };
 400
 401 typedef GpStatus (*gdip_format_string_callback)(HDC hdc,
 402     GDIPCONST WCHAR *string, INT index, INT length, GDIPCONST GpFont *font,
 403     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format,
 404     INT lineno, const RectF *bounds, void *user_data);
 405
 406 GpStatus gdip_format_string(HDC hdc,
 407     GDIPCONST WCHAR *string, INT length, GDIPCONST GpFont *font,
 408     GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format,
 409     gdip_format_string_callback callback, void *user_data);
 410
 411 #endif