src/gallium/state_trackers/vega/api_paint.c

   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/openvg.h"
  28
  29 #include "vg_context.h"
  30 #include "paint.h"
  31 #include "api.h"
  32 #include "handle.h"
  33
  34
  35 VGPaint vegaCreatePaint(void)
  36 {
  37    return paint_to_handle(paint_create(vg_current_context()));
  38 }
  39
  40 void vegaDestroyPaint(VGPaint p)
  41 {
  42    struct vg_context *ctx = vg_current_context();
  43
  44    if (p == VG_INVALID_HANDLE) {
  45       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
  46       return;
  47    }
  48
  49    paint_destroy(handle_to_paint(p));
  50 }
  51
  52 void vegaSetPaint(VGPaint paint, VGbitfield paintModes)
  53 {
  54    struct vg_context *ctx = vg_current_context();
  55
  56    if (paint == VG_INVALID_HANDLE) {
  57       /* restore the default */
  58       paint = paint_to_handle(ctx->default_paint);
  59    } else if (!vg_object_is_valid(paint, VG_OBJECT_PAINT)) {
  60       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
  61       return;
  62    }
  63
  64    if (!(paintModes & ((VG_FILL_PATH|VG_STROKE_PATH)))) {
  65       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
  66       return;
  67    }
  68
  69    if (paintModes & VG_FILL_PATH) {
  70       ctx->state.vg.fill_paint = handle_to_paint(paint);
  71    }
  72    if (paintModes & VG_STROKE_PATH) {
  73       ctx->state.vg.stroke_paint = handle_to_paint(paint);
  74    }
  75
  76    ctx->state.dirty |= PAINT_DIRTY;
  77 }
  78
  79 VGPaint vegaGetPaint(VGPaintMode paintMode)
  80 {
  81    struct vg_context *ctx = vg_current_context();
  82    VGPaint paint = VG_INVALID_HANDLE;
  83
  84    if (paintMode < VG_STROKE_PATH || paintMode > VG_FILL_PATH) {
  85       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
  86       return VG_INVALID_HANDLE;
  87    }
  88
  89    if (paintMode == VG_FILL_PATH)
  90       paint = paint_to_handle(ctx->state.vg.fill_paint);
  91    else if (paintMode == VG_STROKE_PATH)
  92       paint = paint_to_handle(ctx->state.vg.stroke_paint);
  93
  94    if (paint == paint_to_handle(ctx->default_paint))
  95       paint = VG_INVALID_HANDLE;
  96
  97    return paint;
  98 }
  99
 100 void vegaSetColor(VGPaint paint, VGuint rgba)
 101 {
 102    struct vg_context *ctx = vg_current_context();
 103    struct vg_paint *p;
 104
 105    if (paint == VG_INVALID_HANDLE) {
 106       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
 107       return;
 108    }
 109
 110    if (!vg_object_is_valid(paint, VG_OBJECT_PAINT)) {
 111       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
 112       return;
 113    }
 114
 115    p = handle_to_paint(paint);
 116    paint_set_colori(p, rgba);
 117
 118    if (ctx->state.vg.fill_paint == p ||
 119        ctx->state.vg.stroke_paint == p)
 120       ctx->state.dirty |= PAINT_DIRTY;
 121 }
 122
 123 VGuint vegaGetColor(VGPaint paint)
 124 {
 125    struct vg_context *ctx = vg_current_context();
 126    struct vg_paint *p;
 127    VGuint rgba = 0;
 128
 129    if (paint == VG_INVALID_HANDLE) {
 130       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
 131       return rgba;
 132    }
 133
 134    if (!vg_object_is_valid(paint, VG_OBJECT_PAINT)) {
 135       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
 136       return rgba;
 137    }
 138    p = handle_to_paint(paint);
 139
 140    return paint_colori(p);
 141 }
 142
 143 void vegaPaintPattern(VGPaint paint, VGImage pattern)
 144 {
 145    struct vg_context *ctx = vg_current_context();
 146
 147    if (paint == VG_INVALID_HANDLE ||
 148        !vg_context_is_object_valid(ctx, VG_OBJECT_PAINT, paint)) {
 149       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
 150       return;
 151    }
 152
 153    if (pattern == VG_INVALID_HANDLE) {
 154       paint_set_type(handle_to_paint(paint), VG_PAINT_TYPE_COLOR);
 155       return;
 156    }
 157
 158    if (!vg_context_is_object_valid(ctx, VG_OBJECT_IMAGE, pattern)) {
 159       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
 160       return;
 161    }
 162
 163
 164    if (!vg_object_is_valid(paint, VG_OBJECT_PAINT) ||
 165        !vg_object_is_valid(pattern, VG_OBJECT_IMAGE)) {
 166       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
 167       return;
 168    }
 169    paint_set_pattern(handle_to_paint(paint),
 170                      handle_to_image(pattern));
 171 }
 172