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 } RrReliefType;
  59
  60 typedef enum {
  61     RR_BEVEL_1,
  62     RR_BEVEL_2
  63 } RrBevelType;
  64
  65 typedef enum {
  66     RR_SURFACE_NONE,
  67     RR_SURFACE_PARENTREL,
  68     RR_SURFACE_SOLID,
  69     RR_SURFACE_SPLIT_VERTICAL,
  70     RR_SURFACE_HORIZONTAL,
  71     RR_SURFACE_VERTICAL,
  72     RR_SURFACE_DIAGONAL,
  73     RR_SURFACE_CROSS_DIAGONAL,
  74     RR_SURFACE_PYRAMID,
  75     RR_SURFACE_MIRROR_HORIZONTAL
  76 } RrSurfaceColorType;
  77
  78 typedef enum {
  79     RR_TEXTURE_NONE,
  80     RR_TEXTURE_MASK,
  81     RR_TEXTURE_TEXT,
  82     RR_TEXTURE_LINE_ART,
  83     RR_TEXTURE_RGBA,
  84     RR_TEXTURE_IMAGE
  85 } RrTextureType;
  86
  87 typedef enum {
  88     RR_JUSTIFY_LEFT,
  89     RR_JUSTIFY_CENTER,
  90     RR_JUSTIFY_RIGHT
  91 } RrJustify;
  92
  93 /* Put middle first so it's the default */
  94 typedef enum {
  95     RR_ELLIPSIZE_MIDDLE,
  96     RR_ELLIPSIZE_NONE,
  97     RR_ELLIPSIZE_START,
  98     RR_ELLIPSIZE_END
  99 } RrEllipsizeMode;
 100
 101 typedef enum {
 102     RR_FONTWEIGHT_LIGHT,
 103     RR_FONTWEIGHT_NORMAL,
 104     RR_FONTWEIGHT_SEMIBOLD,
 105     RR_FONTWEIGHT_BOLD,
 106     RR_FONTWEIGHT_ULTRABOLD
 107 } RrFontWeight;
 108
 109 typedef enum {
 110     RR_FONTSLANT_NORMAL,
 111     RR_FONTSLANT_ITALIC,
 112     RR_FONTSLANT_OBLIQUE
 113 } RrFontSlant;
 114
 115 struct _RrSurface {
 116     RrSurfaceColorType grad;
 117     RrReliefType relief;
 118     RrBevelType bevel;
 119     RrColor *primary;
 120     RrColor *secondary;
 121     RrColor *border_color;
 122     RrColor *bevel_dark;
 123     RrColor *bevel_light;
 124     RrColor *interlace_color;
 125     gboolean interlaced;
 126     gboolean border;
 127     RrAppearance *parent;
 128     gint parentx;
 129     gint parenty;
 130     RrPixel32 *pixel_data;
 131     gint bevel_dark_adjust;  /* 0-255, default is 64 */
 132     gint bevel_light_adjust; /* 0-255, default is 128 */
 133     RrColor *split_primary;
 134     RrColor *split_secondary;
 135 };
 136
 137 struct _RrTextureText {
 138     RrFont *font;
 139     RrJustify justify;
 140     RrColor *color;
 141     const gchar *string;
 142     gint shadow_offset_x;
 143     gint shadow_offset_y;
 144     RrColor *shadow_color;
 145     gboolean shortcut; /*!< Underline a character */
 146     guint shortcut_pos; /*!< Position in bytes of the character to underline */
 147     RrEllipsizeMode ellipsize;
 148     gboolean flow; /* allow multiple lines.  must set maxwidth below */
 149     gint maxwidth;
 150     guchar shadow_alpha; /* at the bottom to improve alignment */
 151 };
 152
 153 struct _RrPixmapMask {
 154     const RrInstance *inst;
 155     Pixmap mask;
 156     gint width;
 157     gint height;
 158     gchar *data;
 159 };
 160
 161 struct _RrTextureMask {
 162     RrColor *color;
 163     RrPixmapMask *mask;
 164 };
 165
 166 struct _RrTextureRGBA {
 167     gint width;
 168     gint height;
 169     gint alpha;
 170     RrPixel32 *data;
 171     /* size and position to draw at (if these are zero, then it will be
 172        drawn to fill the entire texture */
 173     gint tx;
 174     gint ty;
 175     gint twidth;
 176     gint theight;
 177 };
 178
 179 struct _RrTextureImage {
 180     RrImage *image;
 181     gint alpha;
 182     /* size and position to draw at (if these are zero, then it will be
 183        drawn to fill the entire texture */
 184     gint tx;
 185     gint ty;
 186     gint twidth;
 187     gint theight;
 188 };
 189
 190 struct _RrTextureLineArt {
 191     RrColor *color;
 192     gint x1;
 193     gint y1;
 194     gint x2;
 195     gint y2;
 196 };
 197
 198 union _RrTextureData {
 199     RrTextureRGBA rgba;
 200     RrTextureImage image;
 201     RrTextureText text;
 202     RrTextureMask mask;
 203     RrTextureLineArt lineart;
 204 };
 205
 206 struct _RrTexture {
 207     /* If changing the type of a texture, you should DEFINITELY call
 208        RrAppearanceClearTextures() first! */
 209     RrTextureType type;
 210     RrTextureData data;
 211 };
 212
 213 struct _RrAppearance {
 214     const RrInstance *inst;
 215
 216     RrSurface surface;
 217     gint textures;
 218     RrTexture *texture;
 219     Pixmap pixmap;
 220     XftDraw *xftdraw;
 221
 222     /* cached for internal use */
 223     gint w, h;
 224 };
 225
 226 /*! Holds a RGBA image picture */
 227 struct _RrImagePic {
 228     gint width, height;
 229     RrPixel32 *data;
 230     /* The sum of all the pixels.  This is used to compare pictures if their
 231        hashes match. */
 232     gint sum;
 233 };
 234
 235 typedef void (*RrImageDestroyFunc)(RrImage *image);
 236
 237 /*! An RrImage is a sort of meta-image.  It can contain multiple versions of
 238   an image at different sizes, which may or may not be completely different
 239   pictures */
 240 struct _RrImage {
 241     gint ref;
 242     RrImageCache *cache;
 243
 244     /*! An array of "originals", that is of RrPictures that have been added
 245       to the image in various sizes, and that have not been resized.  These
 246       are explicitly added to the RrImage. */
 247     RrImagePic **original;
 248     gint n_original;
 249     /*! An array of "resized" pictures.  When an "original" RrPicture
 250       needs to be resized for drawing, it is saved in here so that it doesn't
 251       need to be resized again.  These are automatically added to the
 252       RrImage. */
 253     RrImagePic **resized;
 254     gint n_resized;
 255
 256     /* This function (if not NULL) will be called just before destroying
 257       RrImage. */
 258     RrImageDestroyFunc destroy_func;
 259 };
 260
 261 /* these are the same on all endian machines because it seems to be dependant
 262    on the endianness of the gfx card, not the cpu. */
 263 #define RrDefaultAlphaOffset 24
 264 #define RrDefaultRedOffset 16
 265 #define RrDefaultGreenOffset 8
 266 #define RrDefaultBlueOffset 0
 267
 268 #define RrDefaultFontFamily       "arial,sans"
 269 #define RrDefaultFontSize         8
 270 #define RrDefaultFontWeight       RR_FONTWEIGHT_NORMAL
 271 #define RrDefaultFontSlant        RR_FONTSLANT_NORMAL
 272
 273 RrInstance* RrInstanceNew (Display *display, gint screen);
 274 void        RrInstanceFree (RrInstance *inst);
 275
 276 Display* RrDisplay      (const RrInstance *inst);
 277 gint     RrScreen       (const RrInstance *inst);
 278 Window   RrRootWindow   (const RrInstance *inst);
 279 Visual*  RrVisual       (const RrInstance *inst);
 280 gint     RrDepth        (const RrInstance *inst);
 281 Colormap RrColormap     (const RrInstance *inst);
 282 gint     RrRedOffset    (const RrInstance *inst);
 283 gint     RrGreenOffset  (const RrInstance *inst);
 284 gint     RrBlueOffset   (const RrInstance *inst);
 285 gint     RrRedShift     (const RrInstance *inst);
 286 gint     RrGreenShift   (const RrInstance *inst);
 287 gint     RrBlueShift    (const RrInstance *inst);
 288 gint     RrRedMask      (const RrInstance *inst);
 289 gint     RrGreenMask    (const RrInstance *inst);
 290 gint     RrBlueMask     (const RrInstance *inst);
 291
 292 RrColor *RrColorNew   (const RrInstance *inst, gint r, gint g, gint b);
 293 RrColor *RrColorParse (const RrInstance *inst, gchar *colorname);
 294 void     RrColorFree  (RrColor *in);
 295
 296 gint     RrColorRed   (const RrColor *c);
 297 gint     RrColorGreen (const RrColor *c);
 298 gint     RrColorBlue  (const RrColor *c);
 299 gulong   RrColorPixel (const RrColor *c);
 300 GC       RrColorGC    (RrColor *c);
 301
 302 RrAppearance *RrAppearanceNew  (const RrInstance *inst, gint numtex);
 303 RrAppearance *RrAppearanceCopy (RrAppearance *a);
 304 void          RrAppearanceFree (RrAppearance *a);
 305 void          RrAppearanceRemoveTextures(RrAppearance *a);
 306 void          RrAppearanceAddTextures(RrAppearance *a, gint numtex);
 307 /*! Always call this when changing the type of a texture in an appearance */
 308 void          RrAppearanceClearTextures(RrAppearance *a);
 309
 310 RrFont *RrFontOpen          (const RrInstance *inst, const gchar *name,
 311                              gint size, RrFontWeight weight, RrFontSlant slant);
 312 RrFont *RrFontOpenDefault   (const RrInstance *inst);
 313 void    RrFontClose         (RrFont *f);
 314 RrSize *RrFontMeasureString (const RrFont *f, const gchar *str,
 315                              gint shadow_offset_x, gint shadow_offset_y,
 316                              gboolean flow, gint maxwidth);
 317 gint    RrFontHeight        (const RrFont *f, gint shadow_offset_y);
 318 gint    RrFontMaxCharWidth  (const RrFont *f);
 319
 320 /* Paint into the appearance. The old pixmap is returned (if there was one). It
 321    is the responsibility of the caller to call XFreePixmap on the return when
 322    it is non-null. */
 323 Pixmap RrPaintPixmap (RrAppearance *a, gint w, gint h);
 324 void   RrPaint       (RrAppearance *a, Window win, gint w, gint h);
 325 void   RrMinSize     (RrAppearance *a, gint *w, gint *h);
 326 gint   RrMinWidth    (RrAppearance *a);
 327 /* For text textures, if flow is TRUE, then the string must be set before
 328    calling this, otherwise it doesn't need to be */
 329 gint   RrMinHeight   (RrAppearance *a);
 330 void   RrMargins     (RrAppearance *a, gint *l, gint *t, gint *r, gint *b);
 331
 332 gboolean RrPixmapToRGBA(const RrInstance *inst,
 333                         Pixmap pmap, Pixmap mask,
 334                         gint *w, gint *h, RrPixel32 **data);
 335
 336 /*! Create a new image cache for RrImages.
 337   @param max_resized_saved The number of resized copies of an image to save
 338 */
 339 RrImageCache* RrImageCacheNew(gint max_resized_saved);
 340 void          RrImageCacheRef(RrImageCache *self);
 341 void          RrImageCacheUnref(RrImageCache *self);
 342
 343 /*! Finds an image in the cache, if it is already in there */
 344 RrImage*      RrImageCacheFind(RrImageCache *self,
 345                                RrPixel32 *data, gint w, gint h);
 346
 347 RrImage* RrImageNew(RrImageCache *cache);
 348 void     RrImageRef(RrImage *im);
 349 void     RrImageUnref(RrImage *im);
 350
 351 void     RrImageAddPicture(RrImage *im, RrPixel32 *data, gint w, gint h);
 352 void     RrImageRemovePicture(RrImage *im, gint w, gint h);
 353
 354 G_END_DECLS
 355
 356 #endif /*__render_h*/