Mercurial > MadButterfly
annotate src/shape_text.c @ 1052:1f93f38688c2
Define doxygen groups for symbols of rdman.
author | Thinker K.F. Li <thinker@codemud.net> |
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date | Wed, 24 Nov 2010 14:45:17 +0800 |
parents | 586e50f82c1f |
children | a8d20bc8ce40 |
rev | line source |
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1 // -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 4; -*- |
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2 // vim: sw=4:ts=8:sts=4 |
27 | 3 #include <stdio.h> |
4 #include <stdlib.h> | |
5 #include <string.h> | |
31
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6 #include <math.h> |
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7 #include "mb_graph_engine.h" |
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8 #include <pango/pangocairo.h> |
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9 #include "mb_types.h" |
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10 #include "mb_shapes.h" |
27 | 11 |
104 | 12 #define ASSERT(x) |
27 | 13 #define OK 0 |
14 #define ERR -1 | |
15 | |
16 typedef struct _sh_text { | |
17 shape_t shape; | |
18 char *data; | |
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19 co_aix x, y,w,h; |
27 | 20 co_aix d_x, d_y; /* device x and y */ |
21 co_aix font_size; | |
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22 co_aix d_font_size; |
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23 mbe_font_face_t *face; |
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24 mbe_scaled_font_t *scaled_font; |
27 | 25 int flags; |
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26 PangoLayout *layout; |
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27 int align; |
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28 PangoAttrList *attrs; |
27 | 29 } sh_text_t; |
30 | |
31 #define TXF_SCALE_DIRTY 0x1 | |
32 | |
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33 static void sh_text_free(shape_t *shape) { |
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34 sh_text_t *text = (sh_text_t *)shape; |
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35 |
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36 if(text->scaled_font) |
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37 mbe_scaled_font_destroy(text->scaled_font); |
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38 mbe_font_face_destroy(text->face); |
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39 } |
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40 |
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41 static void sh_text_P_generate_layout(sh_text_t *text,mbe_t *cr); |
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42 shape_t *rdman_shape_text_new(redraw_man_t *rdman, |
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43 const char *txt, co_aix x, co_aix y, |
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44 co_aix font_size, mbe_font_face_t *face,PangoAttrList *attrs) { |
27 | 45 sh_text_t *text; |
46 | |
47 text = (sh_text_t *)malloc(sizeof(sh_text_t)); | |
48 if(text == NULL) | |
49 return NULL; | |
50 | |
51 memset(text, 0, sizeof(sh_text_t)); | |
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52 mb_obj_init(text, MBO_TEXT); |
27 | 53 text->data = strdup(txt); |
54 if(text->data == NULL) { | |
55 free(text); | |
56 return NULL; | |
57 } | |
58 text->x = x; | |
59 text->y = y; | |
60 text->font_size = font_size; | |
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61 mbe_font_face_reference(face); |
27 | 62 text->face = face; |
63 text->flags |= TXF_SCALE_DIRTY; | |
64 | |
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65 text->shape.free = sh_text_free; |
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66 text->layout = NULL; |
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67 text->attrs = attrs; |
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68 text->align = TEXTALIGN_START; |
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69 text->w = text->h = 0; |
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70 |
159
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71 rdman_shape_man(rdman, (shape_t *)text); |
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72 |
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73 return (shape_t *)text; |
27 | 74 } |
75 | |
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76 void sh_text_set_pos(shape_t *shape, co_aix x, co_aix y) |
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77 { |
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78 sh_text_t *text = (sh_text_t *)shape; |
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79 text->x = x; |
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80 text->y = y; |
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81 } |
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82 |
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83 |
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84 void sh_text_get_pos(shape_t *shape, co_aix *x, co_aix *y) |
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85 { |
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86 sh_text_t *text = (sh_text_t *)shape; |
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87 *x = text->x; |
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88 *y = text->y; |
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89 } |
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90 |
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91 void sh_text_get_text(shape_t *shape, char *text,int size) |
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92 { |
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93 sh_text_t *t = (sh_text_t *)shape; |
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94 strncpy(text,t->data, size); |
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95 } |
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96 |
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97 void sh_text_set_text(shape_t *shape, const char *txt) { |
88
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98 sh_text_t *text = (sh_text_t *)shape; |
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99 char *buf; |
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100 |
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101 buf = strdup(txt); |
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102 if(text->data) free(text->data); |
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103 text->data = buf; |
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104 } |
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105 |
292 | 106 void sh_text_set_color(shape_t *shape, unsigned int color) |
107 { | |
294 | 108 PangoAttribute *attr = pango_attr_foreground_new(TEXTCOLOR_RED(color)<<8,TEXTCOLOR_GREEN(color)<<8,TEXTCOLOR_BLUE(color)<<8); |
292 | 109 sh_text_t *text = (sh_text_t *)shape; |
294 | 110 attr->start_index = 0; |
292 | 111 attr->end_index = -1; |
112 pango_attr_list_change(text->attrs, attr); | |
113 } | |
114 void sh_text_set_bold(shape_t *shape,int bold) | |
115 { | |
116 PangoAttribute *attr = pango_attr_weight_new(bold? PANGO_WEIGHT_BOLD:PANGO_WEIGHT_NORMAL); | |
117 sh_text_t *text = (sh_text_t *)shape; | |
294 | 118 attr->start_index = 0; |
292 | 119 attr->end_index = -1; |
120 pango_attr_list_change(text->attrs, attr); | |
121 } | |
122 void sh_text_set_italic(shape_t *shape,int italic) | |
123 { | |
124 PangoAttribute *attr = pango_attr_style_new(italic? PANGO_STYLE_ITALIC:PANGO_STYLE_NORMAL); | |
125 sh_text_t *text = (sh_text_t *)shape; | |
294 | 126 attr->start_index = 0; |
292 | 127 attr->end_index = -1; |
128 pango_attr_list_change(text->attrs, attr); | |
129 } | |
130 void sh_text_set_underline(shape_t *shape,int underline) | |
131 { | |
132 PangoAttribute *attr = pango_attr_underline_new(underline? PANGO_UNDERLINE_SINGLE:PANGO_UNDERLINE_NONE); | |
133 sh_text_t *text = (sh_text_t *)shape; | |
294 | 134 attr->start_index = 0; |
292 | 135 attr->end_index = -1; |
136 pango_attr_list_change(text->attrs, attr); | |
137 } | |
138 void sh_text_set_font(shape_t *shape,char *family) | |
139 { | |
140 PangoAttribute *attr = pango_attr_family_new(family); | |
141 sh_text_t *text = (sh_text_t *)shape; | |
294 | 142 attr->start_index = 0; |
292 | 143 attr->end_index = -1; |
144 pango_attr_list_change(text->attrs, attr); | |
145 } | |
146 | |
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147 void sh_text_set_align(shape_t *shape,int align) |
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148 { |
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149 sh_text_t *text = (sh_text_t *)shape; |
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150 text->align = align; |
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151 } |
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152 void sh_text_set_width(shape_t *shape,int width) |
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153 { |
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154 sh_text_t *text = (sh_text_t *)shape; |
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155 text->w = width; |
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156 } |
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157 void sh_text_set_style(shape_t *shape,int begin,int end,mb_textstyle_t *format) |
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158 { |
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159 PangoAttribute *attr; |
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160 sh_text_t *text = (sh_text_t *)shape; |
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161 |
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162 if (end == -1) { |
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163 end = strlen(text->data); |
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164 } else |
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165 end++; |
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166 if (format->property & TEXTSTYLE_BOLD) { |
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167 attr = pango_attr_weight_new(PANGO_WEIGHT_BOLD); |
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168 attr->start_index = begin; |
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169 attr->end_index = end; |
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170 pango_attr_list_change(text->attrs,attr); |
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171 } |
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172 if (format->property & TEXTSTYLE_ITALIC) { |
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173 attr = pango_attr_style_new(PANGO_STYLE_ITALIC); |
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174 attr->start_index = begin; |
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175 attr->end_index = end; |
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176 pango_attr_list_change(text->attrs,attr); |
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177 } |
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178 if (format->property & TEXTSTYLE_UNDERLINE) { |
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179 attr = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE); |
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180 attr->start_index = begin; |
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181 attr->end_index = end; |
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182 pango_attr_list_change(text->attrs,attr); |
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183 } |
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184 if (format->property & TEXTSTYLE_COLOR) { |
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185 printf("color=%x\n", format->color); |
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186 printf("red = %x\n",TEXTCOLOR_RED(format->color)); |
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187 printf("green = %x\n",TEXTCOLOR_GREEN(format->color)); |
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188 printf("blue = %x\n",TEXTCOLOR_BLUE(format->color)); |
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189 attr = pango_attr_foreground_new(TEXTCOLOR_RED(format->color)<<8,TEXTCOLOR_GREEN(format->color)<<8,TEXTCOLOR_BLUE(format->color)<<8); |
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190 attr->start_index = begin; |
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191 attr->end_index = end; |
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192 pango_attr_list_change(text->attrs,attr); |
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193 } |
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194 if (format->property & TEXTSTYLE_FONT) { |
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195 attr = pango_attr_family_new(format->font); |
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196 attr->start_index = begin; |
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197 attr->end_index = end; |
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198 pango_attr_list_change(text->attrs,attr); |
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199 } |
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200 if (format->property & TEXTSTYLE_ALIGN) { |
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201 // We can have one align style for the whole text only |
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202 if (begin != 0 || (end != strlen(text->data)-1)) |
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203 return; |
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204 text->align = format->align; |
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205 } |
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206 } |
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207 |
279
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208 static int get_extents(sh_text_t *text, PangoRectangle *extents) { |
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209 mbe_scaled_font_t *new_scaled; |
27 | 210 |
279
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211 pango_layout_get_extents(text->layout, NULL, extents); |
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212 pango_extents_to_pixels(extents,NULL); |
27 | 213 return OK; |
214 } | |
215 | |
216 void sh_text_transform(shape_t *shape) { | |
217 sh_text_t *text; | |
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218 coord_t *coord; |
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219 canvas_t *canvas; |
27 | 220 co_aix x, y; |
221 co_aix shw; | |
279
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222 PangoRectangle extents; |
27 | 223 co_aix poses[2][2]; |
224 int r; | |
225 | |
226 text = (sh_text_t *)shape; | |
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227 |
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228 text->d_font_size = coord_trans_size(shape->coord, text->font_size); |
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229 |
346
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230 coord = sh_get_coord(shape); |
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231 canvas = _coord_get_canvas(coord); |
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232 sh_text_P_generate_layout(text, (mbe_t *)canvas); |
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233 |
27 | 234 x = text->x; |
235 y = text->y; | |
236 coord_trans_pos(shape->coord, &x, &y); | |
237 r = get_extents(text, &extents); | |
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238 |
280 | 239 //printf("x=%f y=%f text=%s ascent=%d,descent=%d,width=%d height=%d\n", x,y,text->data,PANGO_ASCENT(extents), PANGO_DESCENT(extents), extents.width, extents.height); |
104 | 240 ASSERT(r == OK); |
27 | 241 |
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242 text->d_x = x-5; |
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243 text->d_y = y-PANGO_DESCENT(extents)+5; |
27 | 244 shw = shape->stroke_width / 2; |
245 /* FIXME: It is unreasonable that a font exceed it's bbox. | |
246 * We add 5 pixels in get right bbox. But, it is unreasonable. | |
247 */ | |
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248 |
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249 poses[0][0] = text->d_x + extents.x - shw; |
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250 poses[0][1] = text->d_y + extents.y - shw; |
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251 poses[1][0] = poses[0][0] + extents.width + shape->stroke_width; |
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252 poses[1][1] = poses[0][1] + extents.height + shape->stroke_width; |
27 | 253 geo_from_positions(shape->geo, 2, poses); |
104 | 254 /*! \todo Support ratation for shape_text. */ |
27 | 255 } |
256 | |
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257 static void sh_text_P_generate_layout(sh_text_t *text,mbe_t *cr) |
278
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258 { |
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259 PangoAttribute *attr; |
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260 PangoAttrList *attrlist; |
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261 PangoFontDescription *desc; |
27 | 262 |
278
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263 if (text->layout) { |
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264 g_object_unref(text->layout); |
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265 } |
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266 text->layout = pango_cairo_create_layout(cr); |
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267 desc = pango_font_description_from_string("Sans Bold"); |
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268 //mbe_set_source_rgb (cr, 0, 0, 0); |
278
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269 pango_layout_set_font_description (text->layout, desc); |
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270 if (text->w != 0) |
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271 pango_layout_set_width(text->layout, text->w); |
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272 pango_layout_set_text(text->layout,text->data,strlen(text->data)); |
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273 pango_layout_set_attributes(text->layout, text->attrs); |
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274 if (text->align == TEXTALIGN_START) |
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275 pango_layout_set_alignment(text->layout, PANGO_ALIGN_LEFT); |
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276 else if (text->align == TEXTALIGN_MIDDLE) |
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277 pango_layout_set_alignment(text->layout, PANGO_ALIGN_CENTER); |
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278 else if (text->align == TEXTALIGN_END) |
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279 pango_layout_set_alignment(text->layout, PANGO_ALIGN_RIGHT); |
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280 pango_cairo_update_layout(cr,text->layout); |
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281 //printf("text=%s\n",text->data); |
278
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282 } |
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283 static void draw_text(sh_text_t *text, mbe_t *cr) { |
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284 mbe_move_to(cr, text->d_x, text->d_y); |
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285 pango_cairo_layout_path(cr,text->layout); |
27 | 286 } |
287 | |
288 | |
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289 void sh_text_draw(shape_t *shape, mbe_t *cr) { |
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290 draw_text((sh_text_t *)shape, cr); |
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291 } |
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292 |