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.
24 *
25 **************************************************************************/
26
27#include "vg_state.h"
28
29#include <string.h>
30
31void vg_init_state(struct vg_state *state)
32{
33   state->matrix_mode = VG_MATRIX_PATH_USER_TO_SURFACE;
34   state->fill_rule = VG_EVEN_ODD;
35   state->image_quality = VG_IMAGE_QUALITY_FASTER;
36   state->rendering_quality = VG_RENDERING_QUALITY_BETTER;
37   state->blend_mode = VG_BLEND_SRC_OVER;
38   state->image_mode = VG_DRAW_IMAGE_NORMAL;
39
40   memset(state->scissor_rects, 0, sizeof(state->scissor_rects));
41   state->scissor_rects_num = 0;
42
43   state->color_transform = VG_FALSE;
44   state->color_transform_values[0] = 1.0f;
45   state->color_transform_values[1] = 1.0f;
46   state->color_transform_values[2] = 1.0f;
47   state->color_transform_values[3] = 1.0f;
48   state->color_transform_values[4] = 0.0f;
49   state->color_transform_values[5] = 0.0f;
50   state->color_transform_values[6] = 0.0f;
51   state->color_transform_values[7] = 0.0f;
52
53   /* Stroke parameters */
54   state->stroke.line_width.f       = 1.0f;
55   state->stroke.line_width.i       = 1;
56   state->stroke.cap_style        = VG_CAP_BUTT;
57   state->stroke.join_style       = VG_JOIN_MITER;
58   state->stroke.miter_limit.f      = 4.0f;
59   state->stroke.miter_limit.i      = 4;
60   state->stroke.dash_pattern_num = 0;
61   state->stroke.dash_phase.f       = 0.0f;
62   state->stroke.dash_phase.i       = 0;
63   state->stroke.dash_phase_reset = VG_FALSE;
64
65   /* Edge fill color for VG_TILE_FILL tiling mode */
66   state->tile_fill_color[0] = 0.0f;
67   state->tile_fill_color[1] = 0.0f;
68   state->tile_fill_color[2] = 0.0f;
69   state->tile_fill_color[3] = 0.0f;
70
71   /* Color for vgClear */
72   state->clear_color[0] = 0.0f;
73   state->clear_color[1] = 0.0f;
74   state->clear_color[2] = 0.0f;
75   state->clear_color[3] = 0.0f;
76
77   /* Glyph origin */
78   state->glyph_origin[0].f = 0.0f;
79   state->glyph_origin[1].f = 0.0f;
80   state->glyph_origin[0].i = 0;
81   state->glyph_origin[1].i = 0;
82
83   /* Enable/disable alpha masking and scissoring */
84   state->masking = VG_FALSE;
85   state->scissoring = VG_FALSE;
86
87   /* Pixel layout information */
88   state->pixel_layout = VG_PIXEL_LAYOUT_UNKNOWN;
89   state->screen_layout = VG_PIXEL_LAYOUT_UNKNOWN;
90
91   /* Source format selection for image filters */
92   state->filter_format_linear = VG_FALSE;
93   state->filter_format_premultiplied = VG_FALSE;
94
95   /* Destination write enable mask for image filters */
96   state->filter_channel_mask = (VG_RED | VG_GREEN | VG_BLUE | VG_ALPHA);
97
98   matrix_load_identity(&state->path_user_to_surface_matrix);
99   matrix_load_identity(&state->image_user_to_surface_matrix);
100   matrix_load_identity(&state->fill_paint_to_user_matrix);
101   matrix_load_identity(&state->stroke_paint_to_user_matrix);
102   matrix_load_identity(&state->glyph_user_to_surface_matrix);
103}
104
105struct matrix *vg_state_matrix(struct vg_state *state)
106{
107    switch(state->matrix_mode) {
108    case VG_MATRIX_PATH_USER_TO_SURFACE:
109       return &state->path_user_to_surface_matrix;
110    case VG_MATRIX_IMAGE_USER_TO_SURFACE:
111       return &state->image_user_to_surface_matrix;
112    case VG_MATRIX_FILL_PAINT_TO_USER:
113       return &state->fill_paint_to_user_matrix;
114    case VG_MATRIX_STROKE_PAINT_TO_USER:
115       return &state->stroke_paint_to_user_matrix;
116#ifdef OPENVG_VERSION_1_1
117    case VG_MATRIX_GLYPH_USER_TO_SURFACE:
118       return &state->glyph_user_to_surface_matrix;
119#endif
120    default:
121       break;
122    }
123    return NULL;
124}
125