11 /*! Returns a struct to be used when calling members of the library.
12 If the library fails to initialize, NULL is returned.
13 @param display The X Display to use.
14 @param screen The number of the screen to use.
16 struct RrInstance *RrInstanceNew(Display *display,
19 /*! Destroys an instance of the library. The instance should not be used after
20 calling this function.
21 @param inst The instance to destroy.
23 void RrInstanceFree(struct RrInstance *inst);
25 int RrInstanceDepth(struct RrInstance *inst);
26 Colormap RrInstanceColormap(struct RrInstance *inst);
27 Visual *RrInstanceVisual(struct RrInstance *inst);
31 /*! A Color (including alpha component) for the Render library. This should be
32 treated as an opaque data type, and be accessed only via the available
35 /*! The red component. */
37 /*! The green component. */
39 /*! The blue component. */
41 /*! The alpha component. */
45 /*! Returns if an RrColor is non-opaque */
46 #define RrColorHasAlpha(c) ((c).a > 0.0000001)
48 /*! Sets the values of all components for an RrColor */
49 #define RrColorSet(c, w, x, y, z) (c)->r = (w), (c)->g = (x), \
50 (c)->b = (y), (c)->a = z
53 /*! Gets color values from a colorname.
54 @param inst An instance of the library
55 @param colorname The name of the color.
56 @param ret The RrColor to set the colorvalues in.
57 @return nonzero if the colorname could be parsed; on error, it returns zero.
59 int RrColorParse(struct RrInstance *inst, const char *colorname,
66 struct RrFont *RrFontOpen(struct RrInstance *inst, const char *fontstring);
67 void RrFontClose(struct RrFont *font);
69 int RrFontMeasureString(struct RrFont *font, const char *string);
70 int RrFontHeight(struct RrFont *font);
71 int RrFontMaxCharWidth(struct RrFont *font);
83 /*! Create a new RrSurface prototype that can't render. A prototype can be
84 copied to a new RrSurface that can render. */
85 struct RrSurface *RrSurfaceNewProto(enum RrSurfaceType type,
87 /*! Create a new top-level RrSurface for a Window. The new RrSurface defaults
88 to a non-visible state.*/
89 struct RrSurface *RrSurfaceNew(struct RrInstance *inst,
90 enum RrSurfaceType type,
93 /*! Create a new RrSurface which is a child of another. The new RrSurface
94 defaults to a visible state. */
95 struct RrSurface *RrSurfaceNewChild(enum RrSurfaceType type,
96 struct RrSurface *parent,
98 /*! Copy an RrSurface, creating a new top-level RrSurface for a Window. The
99 new RrSurface defaults to a non-visible state.*/
100 struct RrSurface *RrSurfaceCopy(struct RrInstance *inst,
101 struct RrSurface *sur,
103 /*! Copy an RrSurface, creating a nwe RrSurface which is a child of another.
104 The new RrSurface defaults to a visible state.*/
105 struct RrSurface *RrSurfaceCopyChild(struct RrSurface *sur,
106 struct RrSurface *parent);
107 /*! Destroys an RrSurface. */
108 void RrSurfaceFree(struct RrSurface *sur);
110 void RrSurfaceSetArea(struct RrSurface *sur,
116 Window RrSurfaceWindow(struct RrSurface *sur);
118 void RrSurfaceShow(struct RrSurface *sur);
119 void RrSurfaceHide(struct RrSurface *sur);
120 int RrSurfaceVisible(struct RrSurface *sur);
122 void RrSurfaceMinSize(struct RrSurface *sur, int *w, int *h);
124 /* planar surfaces */
126 /*! The options available for the background of an RrSurface */
127 enum RrSurfaceColorType {
128 /*! No rendering on the surface background, its contents will be
131 /*! Solid color fill. */
133 /*! Horizontal gradient. */
134 RR_PLANAR_HORIZONTAL,
135 /*! Vertical gradient. */
137 /*! Diagonal (TL->BR) gradient. */
139 /*! Cross-Diagonal (TR->BL) gradient. */
140 RR_PLANAR_CROSSDIAGONAL,
141 /*! Pipecross gradient. */
143 /*! Rectangle gradient. */
145 /*! Pyramid gradient. */
149 void RrPlanarSet(struct RrSurface *sur,
150 enum RrSurfaceColorType type,
151 struct RrColor *primary,
152 struct RrColor *secondary);
169 typedef long RrData32;
171 typedef int RrData32;
174 void RrTextureSetRGBA(struct RrSurface *sur,
181 void RrTextureSetText(struct RrSurface *sur,
184 enum RrLayout layout,
186 void RrTextureSetNone(struct RrSurface *sur,
191 /*! Paints the surface, and all its children */
192 void RrPaint(struct RrSurface *sur);
193 /*! Paints the surface, and all its children, but only in the given area. */
194 void RrPaintArea(struct RrSurface *sur,