Dogcows Code - chaz/openbox/blob - obrender/render.h

   1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
   2
   3    render.h for the Openbox window manager
   4    Copyright (c) 2006        Mikael Magnusson
   5    Copyright (c) 2003-2007   Dana Jansens
   6    Copyright (c) 2003        Derek Foreman
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    See the COPYING file for a copy of the GNU General Public License.
  19 */
  20
  21 #ifndef __render_h
  22 #define __render_h
  23
  24 #include <X11/Xlib.h> /* some platforms dont include this as needed for Xft */
  25 #include <pango/pangoxft.h>
  26 #include <glib.h>
  27
  28 G_BEGIN_DECLS
  29
  30 #include "obrender/geom.h"
  31 #include "obrender/version.h"
  32
  33 typedef union  _RrTextureData      RrTextureData;
  34 typedef struct _RrAppearance       RrAppearance;
  35 typedef struct _RrSurface          RrSurface;
  36 typedef struct _RrFont             RrFont;
  37 typedef struct _RrTexture          RrTexture;
  38 typedef struct _RrTextureMask      RrTextureMask;
  39 typedef struct _RrTextureRGBA      RrTextureRGBA;
  40 typedef struct _RrTextureImage     RrTextureImage;
  41 typedef struct _RrTextureText      RrTextureText;
  42 typedef struct _RrTextureLineArt   RrTextureLineArt;
  43 typedef struct _RrPixmapMask       RrPixmapMask;
  44 typedef struct _RrInstance         RrInstance;
  45 typedef struct _RrColor            RrColor;
  46 typedef struct _RrImage            RrImage;
  47 typedef struct _RrImagePic         RrImagePic;
  48 typedef struct _RrImageCache       RrImageCache;
  49
  50 typedef guint32 RrPixel32;
  51 typedef guint16 RrPixel16;
  52 typedef guchar  RrPixel8;
  53
  54 typedef enum {
  55     RR_RELIEF_FLAT,
  56     RR_RELIEF_RAISED,
  57     RR_RELIEF_SUNKEN,
  58     RR_RELIEF_NUM_TYPES
  59 } RrReliefType;
  60
  61 typedef enum {
  62     RR_BEVEL_1,
  63     RR_BEVEL_2,
  64     RR_BEVEL_NUM_TYPES
  65 } RrBevelType;
  66
  67 typedef enum {
  68     RR_SURFACE_NONE,
  69     RR_SURFACE_PARENTREL,
  70     RR_SURFACE_SOLID,
  71     RR_SURFACE_SPLIT_VERTICAL,
  72     RR_SURFACE_HORIZONTAL,
  73     RR_SURFACE_VERTICAL,
  74     RR_SURFACE_DIAGONAL,
  75     RR_SURFACE_CROSS_DIAGONAL,
  76     RR_SURFACE_PYRAMID,
  77     RR_SURFACE_MIRROR_HORIZONTAL,
  78     RR_SURFACE_NUM_TYPES
  79 } RrSurfaceColorType;
  80
  81 typedef enum {
  82     RR_TEXTURE_NONE,
  83     RR_TEXTURE_MASK,
  84     RR_TEXTURE_TEXT,
  85     RR_TEXTURE_LINE_ART,
  86     RR_TEXTURE_RGBA,
  87     RR_TEXTURE_IMAGE,
  88     RR_TEXTURE_NUM_TYPES
  89 } RrTextureType;
  90
  91 typedef enum {
  92     RR_JUSTIFY_LEFT,
  93     RR_JUSTIFY_CENTER,
  94     RR_JUSTIFY_RIGHT,
  95     RR_JUSITFY_NUM_TYPES
  96 } RrJustify;
  97
  98 /* Put middle first so it's the default */
  99 typedef enum {
 100     RR_ELLIPSIZE_MIDDLE,
 101     RR_ELLIPSIZE_NONE,
 102     RR_ELLIPSIZE_START,
 103     RR_ELLIPSIZE_END,
 104     RR_ELLIPSIZE_NUM_TYPES
 105 } RrEllipsizeMode;
 106
 107 typedef enum {
 108     RR_FONTWEIGHT_LIGHT,
 109     RR_FONTWEIGHT_NORMAL,
 110     RR_FONTWEIGHT_SEMIBOLD,
 111     RR_FONTWEIGHT_BOLD,
 112     RR_FONTWEIGHT_ULTRABOLD,
 113     RR_FONTWEIGHT_NUM_TYPES
 114 } RrFontWeight;
 115
 116 typedef enum {
 117     RR_FONTSLANT_NORMAL,
 118     RR_FONTSLANT_ITALIC,
 119     RR_FONTSLANT_OBLIQUE,
 120     RR_FONTSLANT_NUM_TYPES
 121 } RrFontSlant;
 122
 123 struct _RrSurface {
 124     RrSurfaceColorType grad;
 125     RrReliefType relief;
 126     RrBevelType bevel;
 127     RrColor *primary;
 128     RrColor *secondary;
 129     RrColor *border_color;
 130     RrColor *bevel_dark;
 131     RrColor *bevel_light;
 132     RrColor *interlace_color;
 133     gboolean interlaced;
 134     gboolean border;
 135     RrAppearance *parent;
 136     gint parentx;
 137     gint parenty;
 138     RrPixel32 *pixel_data;
 139     gint bevel_dark_adjust;  /* 0-255, default is 64 */
 140     gint bevel_light_adjust; /* 0-255, default is 128 */
 141     RrColor *split_primary;
 142     RrColor *split_secondary;
 143 };
 144
 145 struct _RrTextureText {
 146     RrFont *font;
 147     RrJustify justify;
 148     RrColor *color;
 149     const gchar *string;
 150     gint shadow_offset_x;
 151     gint shadow_offset_y;
 152     RrColor *shadow_color;
 153     gboolean shortcut; /*!< Underline a character */
 154     guint shortcut_pos; /*!< Position in bytes of the character to underline */
 155     RrEllipsizeMode ellipsize;
 156     gboolean flow; /* allow multiple lines.  must set maxwidth below */
 157     gint maxwidth;
 158     guchar shadow_alpha; /* at the bottom to improve alignment */
 159 };
 160
 161 struct _RrPixmapMask {
 162     const RrInstance *inst;
 163     Pixmap mask;
 164     gint width;
 165     gint height;
 166     gchar *data;
 167 };
 168
 169 struct _RrTextureMask {
 170     RrColor *color;
 171     RrPixmapMask *mask;
 172 };
 173
 174 struct _RrTextureRGBA {
 175     gint width;
 176     gint height;
 177     gint alpha;
 178     RrPixel32 *data;
 179     /* size and position to draw at (if these are zero, then it will be
 180        drawn to fill the entire texture */
 181     gint tx;
 182     gint ty;
 183     gint twidth;
 184     gint theight;
 185 };
 186
 187 struct _RrTextureImage {
 188     RrImage *image;
 189     gint alpha;
 190     /* size and position to draw at (if these are zero, then it will be
 191        drawn to fill the entire texture */
 192     gint tx;
 193     gint ty;
 194     gint twidth;
 195     gint theight;
 196 };
 197
 198 struct _RrTextureLineArt {
 199     RrColor *color;
 200     gint x1;
 201     gint y1;
 202     gint x2;
 203     gint y2;
 204 };
 205
 206 union _RrTextureData {
 207     RrTextureRGBA rgba;
 208     RrTextureImage image;
 209     RrTextureText text;
 210     RrTextureMask mask;
 211     RrTextureLineArt lineart;
 212 };
 213
 214 struct _RrTexture {
 215     /* If changing the type of a texture, you should DEFINITELY call
 216        RrAppearanceClearTextures() first! */
 217     RrTextureType type;
 218     RrTextureData data;
 219 };
 220
 221 struct _RrAppearance {
 222     const RrInstance *inst;
 223
 224     RrSurface surface;
 225     gint textures;
 226     RrTexture *texture;
 227     Pixmap pixmap;
 228     XftDraw *xftdraw;
 229
 230     /* cached for internal use */
 231     gint w, h;
 232 };
 233
 234 /*! Holds a RGBA image picture */
 235 struct _RrImagePic {
 236     gint width, height;
 237     RrPixel32 *data;
 238     /* The sum of all the pixels.  This is used to compare pictures if their
 239        hashes match. */
 240     gint sum;
 241     /* The name of the image.  This is used to determine
 242        if the named image already is loaded.  May be NULL if the image
 243        was not loaded from disk. */
 244     gchar *name;
 245 };
 246
 247 typedef void (*RrImageDestroyFunc)(RrImage *image, gpointer data);
 248
 249 /*! An RrImage is a sort of meta-image.  It can contain multiple versions of
 250   an image at different sizes, which may or may not be completely different
 251   pictures */
 252 struct _RrImage {
 253     gint ref;
 254     RrImageCache *cache;
 255
 256     /*! An array of "originals", that is of RrPictures that have been added
 257       to the image in various sizes, and that have not been resized.  These
 258       are explicitly added to the RrImage. */
 259     RrImagePic **original;
 260     gint n_original;
 261     /*! An array of "resized" pictures.  When an "original" RrPicture
 262       needs to be resized for drawing, it is saved in here so that it doesn't
 263       need to be resized again.  These are automatically added to the
 264       RrImage. */
 265     RrImagePic **resized;
 266     gint n_resized;
 267
 268     /* This function (if not NULL) will be called just before destroying
 269       RrImage. */
 270     RrImageDestroyFunc destroy_func;
 271     gpointer           destroy_data;
 272 };
 273
 274 /* these are the same on all endian machines because it seems to be dependant
 275    on the endianness of the gfx card, not the cpu. */
 276 #define RrDefaultAlphaOffset 24
 277 #define RrDefaultRedOffset 16
 278 #define RrDefaultGreenOffset 8
 279 #define RrDefaultBlueOffset 0
 280
 281 #define RrDefaultFontFamily       "arial,sans"
 282 #define RrDefaultFontSize         8
 283 #define RrDefaultFontWeight       RR_FONTWEIGHT_NORMAL
 284 #define RrDefaultFontSlant        RR_FONTSLANT_NORMAL
 285
 286 RrInstance* RrInstanceNew (Display *display, gint screen);
 287 void        RrInstanceFree (RrInstance *inst);
 288
 289 Display* RrDisplay      (const RrInstance *inst);
 290 gint     RrScreen       (const RrInstance *inst);
 291 Window   RrRootWindow   (const RrInstance *inst);
 292 Visual*  RrVisual       (const RrInstance *inst);
 293 gint     RrDepth        (const RrInstance *inst);
 294 Colormap RrColormap     (const RrInstance *inst);
 295 gint     RrRedOffset    (const RrInstance *inst);
 296 gint     RrGreenOffset  (const RrInstance *inst);
 297 gint     RrBlueOffset   (const RrInstance *inst);
 298 gint     RrRedShift     (const RrInstance *inst);
 299 gint     RrGreenShift   (const RrInstance *inst);
 300 gint     RrBlueShift    (const RrInstance *inst);
 301 gint     RrRedMask      (const RrInstance *inst);
 302 gint     RrGreenMask    (const RrInstance *inst);
 303 gint     RrBlueMask     (const RrInstance *inst);
 304
 305 RrColor *RrColorNew   (const RrInstance *inst, gint r, gint g, gint b);
 306 RrColor *RrColorParse (const RrInstance *inst, gchar *colorname);
 307 void     RrColorFree  (RrColor *in);
 308
 309 gint     RrColorRed   (const RrColor *c);
 310 gint     RrColorGreen (const RrColor *c);
 311 gint     RrColorBlue  (const RrColor *c);
 312 gulong   RrColorPixel (const RrColor *c);
 313 GC       RrColorGC    (RrColor *c);
 314
 315 RrAppearance *RrAppearanceNew  (const RrInstance *inst, gint numtex);
 316 RrAppearance *RrAppearanceCopy (RrAppearance *a);
 317 void          RrAppearanceFree (RrAppearance *a);
 318 void          RrAppearanceRemoveTextures(RrAppearance *a);
 319 void          RrAppearanceAddTextures(RrAppearance *a, gint numtex);
 320 /*! Always call this when changing the type of a texture in an appearance */
 321 void          RrAppearanceClearTextures(RrAppearance *a);
 322
 323 RrFont *RrFontOpen          (const RrInstance *inst, const gchar *name,
 324                              gint size, RrFontWeight weight, RrFontSlant slant);
 325 RrFont *RrFontOpenDefault   (const RrInstance *inst);
 326 void    RrFontClose         (RrFont *f);
 327 /*! Returns an RrSize, that was allocated with g_slice_new().  Use g_slice_free() to
 328   free it. */
 329 RrSize *RrFontMeasureString (const RrFont *f, const gchar *str,
 330                              gint shadow_offset_x, gint shadow_offset_y,
 331                              gboolean flow, gint maxwidth);
 332 gint    RrFontHeight        (const RrFont *f, gint shadow_offset_y);
 333 gint    RrFontMaxCharWidth  (const RrFont *f);
 334
 335 /* Paint into the appearance. The old pixmap is returned (if there was one). It
 336    is the responsibility of the caller to call XFreePixmap on the return when
 337    it is non-null. */
 338 Pixmap RrPaintPixmap (RrAppearance *a, gint w, gint h);
 339 void   RrPaint       (RrAppearance *a, Window win, gint w, gint h);
 340 void   RrMinSize     (RrAppearance *a, gint *w, gint *h);
 341 gint   RrMinWidth    (RrAppearance *a);
 342 /* For text textures, if flow is TRUE, then the string must be set before
 343    calling this, otherwise it doesn't need to be */
 344 gint   RrMinHeight   (RrAppearance *a);
 345 void   RrMargins     (RrAppearance *a, gint *l, gint *t, gint *r, gint *b);
 346
 347 gboolean RrPixmapToRGBA(const RrInstance *inst,
 348                         Pixmap pmap, Pixmap mask,
 349                         gint *w, gint *h, RrPixel32 **data);
 350
 351 /*! Create a new image cache for RrImages.
 352   @param max_resized_saved The number of resized copies of an image to save
 353 */
 354 RrImageCache* RrImageCacheNew(gint max_resized_saved);
 355 void          RrImageCacheRef(RrImageCache *self);
 356 void          RrImageCacheUnref(RrImageCache *self);
 357
 358 /*! Finds an image in the cache, if it is already in there */
 359 RrImage*      RrImageCacheFind(RrImageCache *self,
 360                                RrPixel32 *data, gint w, gint h);
 361 /*! Finds an image in the cache, by searching for the name of the image */
 362 RrImage*      RrImageCacheFindName(RrImageCache *self,
 363                                    const gchar *name);
 364
 365 RrImage* RrImageNew(RrImageCache *cache);
 366 void     RrImageRef(RrImage *im);
 367 void     RrImageUnref(RrImage *im);
 368
 369 void     RrImageAddPicture(RrImage *im, const RrPixel32 *data, gint w, gint h);
 370 /*! Adds a picture by name, from a file on disk.
 371   @name Can be a full path to an image, or it can be a name as per the
 372         freedesktop.org icon spec. */
 373 gboolean RrImageAddPictureName(RrImage *im, const gchar *name);
 374 void     RrImageRemovePicture(RrImage *im, gint w, gint h);
 375
 376 G_END_DECLS
 377
 378 #endif /*__render_h*/