annotate include/mb_graph_engine_openvg.h @ 598:aba62eb9362d openvg

define color source for VG
author Thinker K.F. Li <thinker@branda.to>
date Thu, 01 Jul 2010 16:16:46 +0800
parents 3300992b29ff
children 28aa5e53abaa
rev   line source
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fd5f5d9e00d2 A dummy graphic engine for OpenVG.
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1 #ifndef __MB_GE_OPENVG_H_
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2 #define __MB_GE_OPENVG_H_
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3
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4 #include <stdio.h>
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5 #include <stdlib.h>
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6 #include <EGL/egl.h>
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7 #include <VG/openvg.h>
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8 #include "mb_basic_types.h"
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9 #include "mb_img_ldr.h"
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10
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11 /*! \defgroup mb_ge_cairo MadButterfly Graphic Engine with Cairo
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12 * @{
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13 */
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14 #define MBE_OPERATOR_CLEAR OPENVG_OPERATOR_CLEAR
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15 #define MBE_OPERATOR_SOURCE OPENVG_OPERATOR_SOURCE
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16 #define MBE_STATUS_SUCCESS OPENVG_STATUS_SUCCESS
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17
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18 #define mbe_image_surface_create_from_png(fn) ((mbe_surface_t *)NULL)
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19 #define mbe_image_surface_create_for_data(data, fmt, w, h, stride) \
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20 ((mbe_surface_t *)NULL)
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21 #define mbe_pattern_create_for_surface(canvas) ((mbe_pattern_t *)NULL)
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22 #define mbe_scaled_font_text_extents(scaled, utf8, extents)
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23 #define mbe_image_surface_get_stride(surface) (20)
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24 #define mbe_image_surface_get_format(surface) ((mb_img_fmt_t)0)
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25 #define mbe_image_surface_get_height(surface) (1)
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26 #define mbe_image_surface_get_width(surface) (1)
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27 #define mbe_image_surface_get_data(surface) ((unsigned char *)NULL)
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28 #define mbe_scaled_font_reference(scaled) ((mbe_scaled_font_t *)NULL)
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29 #define mbe_pattern_create_radial(cx0, cy0, radius0, \
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30 cx1, cy1, radius1, stops, stop_cnt) \
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31 ((mbe_pattern_t *)NULL)
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32 #define mbe_pattern_create_linear(x0, y0, x1, y1, stops, stop_cnt) \
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33 ((mbe_pattern_t *)NULL)
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34 #define mbe_scaled_font_destroy(scaled)
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35 #define mbe_font_face_reference(face) ((mbe_font_face_t *)NULL)
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36 #define mbe_scaled_font_create(face, fnt_mtx, ctm) ((mbe_scaled_font_t *)NULL)
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37 #define mbe_pattern_set_matrix(ptn, mtx)
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38 #define mbe_font_face_destroy(face)
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39 #define mbe_paint_with_alpha(canvas, alpha)
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40 #define mbe_set_scaled_font(canvas, scaled)
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41 #define mbe_pattern_destroy(pattern)
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42 #define mbe_get_scaled_font(canvas) ((mbe_scaled_font_t *)NULL)
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43 #define mbe_query_font_face(family, slant, weight) ((mbe_font_face_t *)NULL)
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44 #define mbe_free_font_face(face)
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45 #define mbe_set_line_width(canvas, w)
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46 #define mbe_set_source_rgb(canvas, r, g, b)
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47 #define mbe_get_font_face(canvas) ((mbe_font_face_t *)NULL)
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48 #define mbe_fill_preserve(canvas)
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49 #define mbe_copy_source(src_canvas, dst_canvas)
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50 #define mbe_set_source(canvas, pattern) \
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51 do { (canvas)->src = (pattern); } while(0)
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52 #define mbe_reset_scissoring(canvas)
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53 #define mbe_get_target(canvas) ((mbe_surface_t *)(canvas)->tgt)
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54 #define mbe_close_path(canvas)
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55 #define mbe_text_path(canvas, utf8)
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56 #define mbe_rectangle(canvas, x, y, w, h)
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57 #define mbe_in_stroke(canvas, x, y) (0)
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58 #define mbe_new_path(canvas)
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59 #define mbe_curve_to(canvas, x1, y1, x2, y2, x3, y3)
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60 #define mbe_restore(canvas)
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61 #define mbe_move_to(canvas, x, y)
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62 #define mbe_line_to(canvas, x, y)
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63 #define mbe_in_fill(canvas, x, y) (0)
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64 #define mbe_save(canvas)
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65 #define mbe_arc(canvas, x, y, radius, angle_start, angle_stop)
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66
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67 typedef struct _mbe_text_extents_t mbe_text_extents_t;
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68 typedef int mbe_scaled_font_t;
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69 typedef int mbe_font_face_t;
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70 typedef struct _ge_openvg_surface mbe_surface_t;
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71 typedef struct _ge_openvg_pattern mbe_pattern_t;
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72 typedef struct _ge_openvg_mbe mbe_t;
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73
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74 struct _mbe_text_extents_t {
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75 co_aix x_bearing;
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76 co_aix y_bearing;
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77 co_aix width;
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78 co_aix height;
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79 co_aix x_advance;
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80 co_aix y_advance;
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81 };
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83 struct _ge_openvg_mbe {
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84 mbe_pattern_t *src;
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85 VGPaint paint; /*!< \brief The paint associated with
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86 * the src pattern */
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87 int paint_installed;
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88 mbe_surface_t *tgt;
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89 EGLContext ctx;
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90 VGPath path;
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91 };
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92
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93 struct _ge_openvg_surface {
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94 void *surface;
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95 mbe_t *asso_mbe; /* There is a association between
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96 * surface and mbe */
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97 int w, h;
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98 };
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99
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100 struct _ge_openvg_pattern {
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101 void *pattern;
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102 void *asso_img;
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103 VGPaint paint;
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104 };
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105
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106 #define MB_MATRIX_2_OPENVG(vgmtx, mtx) do { \
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107 (vgmtx)[0] = (mtx)[0]; \
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108 (vgmtx)[1] = (mtx)[1]; \
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109 (vgmtx)[2] = (mtx)[2]; \
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110 (vgmtx)[3] = (mtx)[3]; \
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111 (vgmtx)[4] = (mtx)[4]; \
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112 (vgmtx)[5] = (mtx)[5]; \
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113 (vgmtx)[6] = 0; \
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114 (vgmtx)[7] = 0; \
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115 (vgmtx)[8] = 1; \
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116 } while(0)
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117
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118 extern EGLNativeDisplayType _ge_openvg_disp_id;
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119 extern mbe_t *_ge_openvg_current_canvas;
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120
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121 extern void mbe_set_source_rgba(mbe_t *canvas, co_comp_t r, co_comp_t g,
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122 co_comp_t b, co_comp_t a);
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123 extern void mbe_scissoring(mbe_t *canvas, int n_areas, area_t **areas);
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124
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125
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126 #define _VG_DISPLAY() eglGetDisplay(_ge_openvg_disp_id)
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127
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128 /* \brief Make the context of a canvas to be current context.
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129 */
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130 #define _MK_CURRENT_CTX(canvas) do { \
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131 if(_ge_openvg_current_canvas != (canvas)) { \
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132 _ge_openvg_current_canvas = canvas; \
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133 eglMakeCurrent(_VG_DISPLAY(), (canvas)->tgt, \
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134 (canvas)->tgt, (canvas)->ctx); \
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135 } \
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136 } while(0)
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137 #define _MK_CURRENT_PAINT(canvas) \
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138 if((canvas)->paint_installed) \
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139 vgSetPaint((canvas)->paint, VG_FILL_PATH|VG_STROKE_PATH)
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140
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141 static void
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142 mbe_transform(mbe_t *canvas, co_aix *mtx) {
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143 VGfloat vg_mtx[9];
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144
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145 _MK_CURRENT_CTX(canvas);
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146 MB_MATRIX_2_OPENVG(vg_mtx, mtx);
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147 vgLoadMatrix(vg_mtx);
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148 }
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149
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150 #define EGL_GLX 1
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151 #ifdef EGL_GLX
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152 #include <X11/Xlib.h>
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153 #include <X11/Xutil.h>
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154
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155 extern mbe_surface_t *mbe_vg_win_surface_create(Display *display,
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156 Drawable drawable,
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157 Visual *visual,
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158 int width, int height);
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159 #endif
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160
589
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161 extern mbe_surface_t *mbe_image_surface_create(mb_img_fmt_t fmt,
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162 int w, int h);
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163
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164 static void
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165 mbe_surface_destroy(mbe_surface_t *surface) {
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166 EGLDisplay display;
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167
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168 display = _VG_DISPLAY();
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169 eglDestroySurface(display, surface->surface);
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170
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171 if(surface->asso_mbe)
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172 surface->asso_mbe->tgt = NULL;
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173
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174 free(surface);
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175 }
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176
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177 extern mbe_t *mbe_create(mbe_surface_t *surface);
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178 extern void mbe_destroy(mbe_t *canvas);
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179 extern void mbe_paint(mbe_t *canvas);
597
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180 extern void mbe_clear(mbe_t *canvas);
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181
593
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182 static void
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183 mbe_stroke(mbe_t *canvas) {
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184 _MK_CURRENT_CTX(canvas);
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185 _MK_CURRENT_PAINT(canvas);
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186
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187 vgDrawPath(canvas->path, VG_STROKE_PATH);
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188 vgClearPath(canvas->path, VG_PATH_CAPABILITY_ALL);
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189 }
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190
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191 static void
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192 mbe_fill(mbe_t *canvas) {
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193 _MK_CURRENT_CTX(canvas);
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194 _MK_CURRENT_PAINT(canvas);
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195
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196 vgDrawPath(canvas->path, VG_FILL_PATH);
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197 vgClearPath(canvas->path, VG_PATH_CAPABILITY_ALL);
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198 }
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199
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200 /* @} */
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201
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202 #endif /* __MB_GE_OPENVG_H_ */