1 /**************************************************************************
2  *
3  * Copyright 2009 VMware, Inc.  All Rights Reserved.
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining a
6  * copy of this software and associated documentation files (the
7  * "Software"), to deal in the Software without restriction, including
8  * without limitation the rights to use, copy, modify, merge, publish,
9  * distribute, sub license, and/or sell copies of the Software, and to
10  * permit persons to whom the Software is furnished to do so, subject to
11  * the following conditions:
12  *
13  * The above copyright notice and this permission notice (including the
14  * next paragraph) shall be included in all copies or substantial portions
15  * of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
20  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
21  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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25  **************************************************************************/
26 
27 #ifndef VG_STATE_H
28 #define VG_STATE_H
29 
30 #include "VG/openvg.h"
31 
32 #include "api_consts.h"
33 #include "matrix.h"
34 
35 struct vg_value
36 {
37    VGfloat f;
38    VGint   i;
39 };
40 
41 struct vg_state {
42    /* Mode settings */
43    VGMatrixMode matrix_mode;
44    VGFillRule fill_rule;
45    VGImageQuality image_quality;
46    VGRenderingQuality rendering_quality;
47    VGBlendMode blend_mode;
48    VGImageMode image_mode;
49 
50    /* Scissoring rectangles */
51    struct vg_value  scissor_rects[32*4];
52    VGint  scissor_rects_num;
53 
54    /* Color Transformation */
55    VGboolean color_transform;
56    VGfloat color_transform_values[8];
57 
58    /* Stroke parameters */
59    struct {
60       struct vg_value line_width;
61       VGCapStyle cap_style;
62       VGJoinStyle join_style;
63       struct vg_value miter_limit;
64       struct vg_value dash_pattern[VEGA_MAX_DASH_COUNT];
65       VGint   dash_pattern_num;
66       struct vg_value dash_phase;
67       VGboolean dash_phase_reset;
68    } stroke;
69 
70    /* Edge fill color for VG_TILE_FILL tiling mode */
71    VGfloat tile_fill_color[4];
72    VGint tile_fill_colori[4];
73 
74    /* Color for vgClear */
75    VGfloat clear_color[4];
76    VGint clear_colori[4];
77 
78    /* Glyph origin */
79    struct vg_value glyph_origin[2];
80 
81    /* Enable/disable alpha masking and scissoring */
82    VGboolean masking;
83    VGboolean scissoring;
84 
85    /* Pixel layout information */
86    VGPixelLayout pixel_layout;
87    VGPixelLayout screen_layout;
88 
89    /* Source format selection for image filters */
90    VGboolean filter_format_linear;
91    VGboolean filter_format_premultiplied;
92 
93    /* Destination write enable mask for image filters */
94    VGbitfield filter_channel_mask;
95 
96    struct matrix path_user_to_surface_matrix;
97    struct matrix image_user_to_surface_matrix;
98    struct matrix fill_paint_to_user_matrix;
99    struct matrix stroke_paint_to_user_matrix;
100    struct matrix glyph_user_to_surface_matrix;
101 
102    struct vg_paint *stroke_paint;
103    struct vg_paint *fill_paint;
104 };
105 
106 void vg_init_state(struct vg_state *state);
107 struct matrix * vg_state_matrix(struct vg_state *state);
108 
109 #endif
110