1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
#ifndef GCS_H
#define GCS_H
/* Overview of functions provided here:
*
* AllocFgGC()
* Given a foreground pixel & a font, return an appropriate GC
*
* AllocBackgroundGC()
* Given a widget, return a GC for painting the background color
*
* AllocShadeGC()
* Given foreground, background, a contrast value & be_nice_to_colormap
* flag, return a GC suitable for rendering in an intermediate color,
* as determined by constrast. May return a dither pattern or a
* solid color, as appropriate.
*
* Contrast 0 = background color, 100 = foreground color. It is legal
* for contrast to be more than 100 or less than 0.
*
* AllocGreyGC()
* Given widget, foreground, font, contrast & be_nice_to_colormap,
* return a shade GC (see above) based on foreground and widget
* background.
*
* AllocTopShadowGC()
* Given widget, contrast & be_nice_to_colormap, return a GC suitable
* for rendering the top shadow.
*
* Contrast 0 = use background pixel. Contrast > 0 = use brighter
* colors.
*
* AllocBotShadowGC()
* Given widget, contrast & be_nice_to_colormap, return a GC suitable
* for rendering the bottom shadow.
*
* Contrast 0 = use background pixel. Contrast > 0 = use darker
* colors.
*
* AllocArmShadowGC()
* Given widget, contrast & be_nice_to_colormap, return a GC suitable
* for rendering the "armed" shadow.
*
* Contrast 0 = use background pixel. Contrast > 0 = use darker
* colors.
*
* AllocShadowPixel()
* Given a widget & scale factor, allocate & return a color darker
* or lighter than the background pixel, as determined by scale.
*
* Scale 100 = use background pixel. Scale > 100 = brighter color,
* Scale < 100 = darker color.
*
* AllocGreyPixel()
* Given two pixel values and scale factor, allocate & return a
* pixel value between them, according to scale.
*
* Scale == 0: background color
* Scale == 100: foreground color
* 0<Scale<100: intermediate color
* Scale > 100: more foreground
* Scale < 0: more background
*
*
* AllocGreyPixelC()
* Given two color values and scale factor, allocate & return a
* pixel value between them, according to scale.
*
* Scale == 0: background color
* Scale == 100: foreground color
* 0<Scale<100: intermediate color
* Scale > 100: more foreground
* Scale < 0: more background
*
* Draw3dBox()
* Given box dimensions, shadow width, top shadow GC & bottom shadow GC,
* draw a 3-d box.
*/
#if NeedFunctionPrototypes
extern GC AllocFgGC( Widget w, Pixel fg, Font font) ;
extern GC AllocBackgroundGC( Widget w, Font font) ;
extern GC AllocShadeGC( Widget w, Pixel fg, Pixel bg, Font,
int contrast, Bool ) ;
extern GC AllocGreyGC( Widget w, Pixel fg, Font, int, Bool ) ;
extern GC AllocTopShadowGC( Widget w, int contrast, int ) ;
extern GC AllocBotShadowGC( Widget w, int contrast, int ) ;
extern GC AllocArmGC( Widget w, int contrast, int) ;
extern Pixel AllocShadowPixel(Widget, int scale) ;
extern Pixel AllocGreyPixel(Widget, Pixel fg, Pixel bg, int scale) ;
extern Pixel AllocGreyPixelC(Widget, XColor *fg, XColor *bg, int scale) ;
extern void Draw3dBox(Widget w, int x, int y, int wid, int hgt, int s,
GC topgc, GC botgc) ;
#if XtSpecificationRelease < 5
extern GC XtAllocateGC(Widget, int depth, u_long mask,
XGCValues *, u_long dynamic, u_long dontcare) ;
#endif
#else
extern GC AllocFgGC() ;
extern GC AllocBackgroundGC() ;
extern GC AllocShadeGC() ;
extern GC AllocGreyGC() ;
extern GC AllocTopShadowGC() ;
extern GC AllocBotShadowGC() ;
extern GC AllocArmGC() ;
extern Pixel AllocShadowPixel() ;
extern Pixel AllocGreyPixel() ;
extern Pixel AllocGreyPixelC() ;
extern void Draw3dBox() ;
#if XtSpecificationRelease < 5
extern GC XtAllocateGC() ;
#endif
#endif
#endif /* GCS_H */
|
