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      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 
     31 void 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 
    105 struct 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