1 | /* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- |
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2 | |
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3 | test-ft-gtk.c: Testbed for freetype/libart integration. |
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4 | |
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5 | Copyright (C) 2000 Eazel, Inc. |
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6 | |
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7 | This program is free software; you can redistribute it and/or |
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8 | modify it under the terms of the GNU General Public License as |
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9 | published by the Free Software Foundation; either version 2 of the |
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10 | License, or (at your option) any later version. |
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11 | |
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12 | This program is distributed in the hope that it will be useful, |
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13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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15 | General Public License for more details. |
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16 | |
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17 | You should have received a copy of the GNU General Public |
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18 | License along with this program; if not, write to the |
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19 | Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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20 | Boston, MA 02111-1307, USA. |
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21 | |
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22 | Author: Raph Levien <raph@artofcode.com> |
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23 | */ |
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24 | |
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25 | #include <stdio.h> |
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26 | #include <stdlib.h> |
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27 | #include <png.h> |
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28 | #include <popt.h> |
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29 | #include <math.h> |
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30 | #include <sys/time.h> |
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31 | #include <unistd.h> |
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32 | |
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33 | #include <gtk/gtk.h> |
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34 | |
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35 | #include <gdk-pixbuf/gdk-pixbuf.h> |
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36 | |
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37 | #include <freetype/freetype.h> |
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38 | |
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39 | #include <libart_lgpl/art_misc.h> |
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40 | #include <libart_lgpl/art_rect.h> |
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41 | #include <libart_lgpl/art_alphagamma.h> |
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42 | #include <libart_lgpl/art_affine.h> |
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43 | #include "art_render.h" |
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44 | #include "art_render_mask.h" |
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45 | |
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46 | #include "rsvg.h" |
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47 | #include "rsvg-ft.h" |
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48 | |
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49 | typedef struct _TestCtx TestCtx; |
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50 | |
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51 | struct _TestCtx { |
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52 | RsvgFTCtx *ctx; |
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53 | RsvgFTFontHandle fh; |
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54 | int n_lines; |
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55 | char **lines; |
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56 | int y_sp; |
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57 | int y_scroll; |
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58 | GtkWidget *drawingarea; |
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59 | GtkWidget *status; |
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60 | double start_time; |
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61 | gboolean do_drawing; |
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62 | gboolean do_scrolling; |
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63 | gboolean do_invert; |
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64 | }; |
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65 | |
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66 | static double |
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67 | timing_get_time (void) |
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68 | { |
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69 | struct timeval tv; |
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70 | struct timezone tz; |
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71 | |
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72 | gettimeofday (&tv, &tz); |
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73 | |
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74 | return tv.tv_sec + 1e-6 * tv.tv_usec; |
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75 | } |
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76 | |
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77 | static void invert_glyph (guchar *buf, int rowstride, int width, int height) |
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78 | { |
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79 | int x, y; |
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80 | int first; |
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81 | int n_words; |
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82 | int last; |
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83 | guint32 *middle; |
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84 | |
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85 | if (width >= 8 && ((rowstride & 3) == 0)) { |
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86 | first = (-(long)buf) & 3; |
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87 | n_words = (width - first) >> 2; |
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88 | last = first + (n_words << 2); |
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89 | |
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90 | for (y = 0; y < height; y++) { |
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91 | middle = (guint32 *)(buf + first); |
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92 | for (x = 0; x < first; x++) |
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93 | buf[x] = ~buf[x]; |
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94 | for (x = 0; x < n_words; x++) |
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95 | middle[x] = ~middle[x]; |
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96 | for (x = last; x < width; x++) |
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97 | buf[x] = ~buf[x]; |
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98 | buf += rowstride; |
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99 | } |
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100 | } else { |
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101 | for (y = 0; y < height; y++) { |
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102 | for (x = 0; x < width; x++) |
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103 | buf[x] = ~buf[x]; |
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104 | buf += rowstride; |
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105 | } |
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106 | } |
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107 | } |
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108 | |
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109 | static void draw_line (TestCtx *ctx, int line_num, ArtIRect *rect) |
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110 | { |
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111 | GtkWidget *drawingarea = ctx->drawingarea; |
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112 | int y0; |
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113 | RsvgFTGlyph *glyph; |
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114 | const double affine[6] = { 1, 0, 0, 1, 5, 12 }; |
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115 | int glyph_xy[2]; |
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116 | ArtIRect line_rect, clear_rect, glyph_rect, draw_rect; |
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117 | int width; |
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118 | |
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119 | width = drawingarea->allocation.width; |
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120 | |
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121 | y0 = line_num * ctx->y_sp - ctx->y_scroll; |
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122 | if (line_num < 0 || line_num >= ctx->n_lines) { |
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123 | if (ctx->do_drawing) { |
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124 | gdk_draw_rectangle (drawingarea->window, |
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125 | drawingarea->style->white_gc, |
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126 | TRUE, |
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127 | 0, y0, width, ctx->y_sp); |
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128 | } |
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129 | } else { |
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130 | guchar *buf; |
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131 | int rowstride; |
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132 | |
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133 | glyph = rsvg_ft_render_string (ctx->ctx, ctx->fh, |
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134 | ctx->lines[line_num], |
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135 | strlen (ctx->lines[line_num]), |
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136 | 14, 14, |
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137 | affine, |
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138 | glyph_xy); |
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139 | rowstride = glyph->rowstride; |
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140 | |
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141 | glyph_rect.x0 = glyph_xy[0]; |
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142 | glyph_rect.y0 = y0 + glyph_xy[1]; |
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143 | glyph_rect.x1 = glyph_rect.x0 + glyph->width; |
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144 | glyph_rect.y1 = glyph_rect.y0 + glyph->height; |
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145 | line_rect.x0 = 0; |
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146 | line_rect.y0 = y0; |
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147 | line_rect.x1 = width; |
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148 | line_rect.y1 = y0 + ctx->y_sp; |
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149 | art_irect_intersect (&clear_rect, rect, &line_rect); |
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150 | |
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151 | if (ctx->do_drawing) |
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152 | gdk_draw_rectangle (drawingarea->window, |
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153 | drawingarea->style->white_gc, |
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154 | TRUE, |
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155 | clear_rect.x0, clear_rect.y0, |
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156 | clear_rect.x1 - clear_rect.x0, |
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157 | clear_rect.y1 - clear_rect.y0); |
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158 | |
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159 | art_irect_intersect (&draw_rect, rect, &glyph_rect); |
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160 | if (!art_irect_empty (&draw_rect) && ctx->do_drawing) { |
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161 | buf = glyph->buf + |
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162 | draw_rect.x0 - glyph_rect.x0 + |
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163 | rowstride * (draw_rect.y0 - glyph_rect.y0); |
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164 | if (ctx->do_invert) { |
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165 | invert_glyph (buf, rowstride, |
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166 | draw_rect.x1 - draw_rect.x0, |
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167 | draw_rect.y1 - draw_rect.y0); |
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168 | } |
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169 | gdk_draw_gray_image (drawingarea->window, |
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170 | drawingarea->style->white_gc, |
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171 | draw_rect.x0, draw_rect.y0, |
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172 | draw_rect.x1 - draw_rect.x0, |
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173 | draw_rect.y1 - draw_rect.y0, |
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174 | GDK_RGB_DITHER_NONE, |
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175 | buf, |
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176 | rowstride); |
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177 | } |
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178 | rsvg_ft_glyph_unref (glyph); |
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179 | } |
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180 | } |
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181 | |
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182 | static gint |
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183 | test_expose (GtkWidget *widget, GdkEventExpose *event, TestCtx *ctx) |
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184 | { |
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185 | int line0, line1; |
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186 | int line; |
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187 | ArtIRect rect; |
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188 | |
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189 | rect.x0 = event->area.x; |
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190 | rect.y0 = event->area.y; |
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191 | rect.x1 = rect.x0 + event->area.width; |
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192 | rect.y1 = rect.y0 + event->area.height; |
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193 | line0 = (rect.y0 + ctx->y_scroll) / ctx->y_sp; |
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194 | line1 = (rect.y1 + ctx->y_scroll + ctx->y_sp - 1) / ctx->y_sp; |
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195 | for (line = line0; line < line1; line++) { |
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196 | #ifdef VERBOSE |
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197 | g_print ("drawing line %d of [%d..%d]\n", line, line0, line1 - 1); |
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198 | #endif |
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199 | draw_line (ctx, line, &rect); |
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200 | } |
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201 | return FALSE; |
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202 | } |
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203 | |
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204 | static void |
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205 | scroll_to (TestCtx *ctx, int new_y) |
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206 | { |
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207 | GtkWidget *drawingarea = ctx->drawingarea; |
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208 | int scroll_amt = new_y - ctx->y_scroll; |
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209 | int width = drawingarea->allocation.width; |
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210 | int height = drawingarea->allocation.height; |
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211 | int y0, y1; |
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212 | GdkEventExpose expose; |
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213 | |
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214 | if (scroll_amt == 0) |
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215 | return; |
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216 | |
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217 | #ifdef VERBOSE |
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218 | g_print ("scrolling to %d\n", new_y); |
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219 | #endif |
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220 | if (scroll_amt > 0 && scroll_amt < height) { |
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221 | y0 = height - scroll_amt; |
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222 | y1 = height; |
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223 | if (ctx->do_scrolling) { |
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224 | gdk_draw_pixmap (drawingarea->window, |
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225 | drawingarea->style->white_gc, |
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226 | drawingarea->window, |
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227 | 0, scroll_amt, |
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228 | 0, 0, |
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229 | width, y0); |
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230 | } |
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231 | } else if (scroll_amt < 0 && -scroll_amt < height) { |
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232 | y0 = 0; |
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233 | y1 = -scroll_amt; |
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234 | if (ctx->do_scrolling) { |
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235 | gdk_draw_pixmap (drawingarea->window, |
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236 | drawingarea->style->white_gc, |
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237 | drawingarea->window, |
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238 | 0, 0, |
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239 | 0, y1, |
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240 | width, height - y1); |
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241 | } |
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242 | } else { |
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243 | y0 = 0; |
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244 | y1 = height; |
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245 | } |
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246 | ctx->y_scroll = new_y; |
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247 | expose.area.x = 0; |
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248 | expose.area.width = width; |
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249 | expose.area.y = y0; |
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250 | expose.area.height = y1 - y0; |
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251 | test_expose (drawingarea, &expose, ctx); |
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252 | } |
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253 | |
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254 | static gboolean scroll_idler (gpointer data) |
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255 | { |
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256 | TestCtx *ctx = (TestCtx *)data; |
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257 | GtkWidget *drawingarea = ctx->drawingarea; |
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258 | int width = drawingarea->allocation.width; |
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259 | int height = drawingarea->allocation.height; |
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260 | |
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261 | if ((ctx->y_scroll + height) < ctx->n_lines * ctx->y_sp) { |
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262 | scroll_to (ctx, ctx->y_scroll + 100); |
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263 | return TRUE; |
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264 | } else { |
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265 | double elapsed; |
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266 | char str[128]; |
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267 | |
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268 | scroll_to (ctx, 0); |
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269 | elapsed = timing_get_time () - ctx->start_time; |
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270 | sprintf (str, "%g seconds to scroll, %g Mpix/s", |
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271 | elapsed, |
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272 | width * ctx->y_sp * ctx->n_lines * 1e-6 / elapsed); |
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273 | gtk_label_set_text (GTK_LABEL (ctx->status), str); |
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274 | return FALSE; |
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275 | } |
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276 | } |
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277 | |
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278 | static void |
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279 | check_toggle (GtkWidget *button, int state, gboolean *bool) { |
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280 | *bool = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (button)); |
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281 | } |
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282 | |
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283 | static GtkWidget * |
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284 | check_button (const char *label, gboolean *bool) { |
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285 | GtkWidget *result; |
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286 | |
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287 | result = gtk_check_button_new_with_label (label); |
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288 | gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (result), *bool); |
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289 | gtk_signal_connect (GTK_OBJECT (result), "state_changed", |
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290 | (GtkSignalFunc) check_toggle, bool); |
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291 | return result; |
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292 | } |
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293 | |
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294 | static void |
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295 | start_scrolling (GtkWidget *widget, TestCtx *ctx) |
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296 | { |
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297 | scroll_to (ctx, 0); |
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298 | gtk_idle_add (scroll_idler, ctx); |
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299 | ctx->start_time = timing_get_time (); |
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300 | gtk_label_set_text (GTK_LABEL (ctx->status), "Scrolling..."); |
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301 | } |
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302 | |
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303 | static void |
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304 | test_ft_quit (GtkWidget *widget, TestCtx *ctx) |
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305 | { |
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306 | rsvg_ft_ctx_done (ctx->ctx); |
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307 | gtk_main_quit (); |
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308 | } |
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309 | |
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310 | static TestCtx *new_test_window (const char *fn, const char *afn, |
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311 | int width, int height) |
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312 | { |
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313 | GtkWidget *topwin; |
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314 | GtkWidget *vbox; |
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315 | GtkWidget *buttonbar; |
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316 | GtkWidget *button; |
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317 | GtkWidget *drawingarea; |
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318 | TestCtx *ctx; |
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319 | |
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320 | ctx = g_new (TestCtx, 1); |
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321 | |
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322 | topwin = gtk_window_new (GTK_WINDOW_TOPLEVEL); |
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323 | gtk_signal_connect (GTK_OBJECT (topwin), "destroy", |
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324 | (GtkSignalFunc) test_ft_quit, ctx); |
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325 | |
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326 | vbox = gtk_vbox_new (FALSE, 0); |
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327 | gtk_container_add (GTK_CONTAINER (topwin), vbox); |
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328 | |
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329 | drawingarea = gtk_drawing_area_new (); |
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330 | gtk_drawing_area_size (GTK_DRAWING_AREA (drawingarea), width, height); |
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331 | gtk_box_pack_start (GTK_BOX (vbox), drawingarea, TRUE, TRUE, 0); |
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332 | |
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333 | ctx->ctx = rsvg_ft_ctx_new (); |
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334 | ctx->fh = rsvg_ft_intern (ctx->ctx, fn); |
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335 | if (afn) rsvg_ft_font_attach (ctx->ctx, ctx->fh, afn); |
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336 | ctx->n_lines = 0; |
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337 | ctx->lines = NULL; |
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338 | ctx->y_sp = 16; |
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339 | ctx->y_scroll = 0; |
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340 | ctx->drawingarea = drawingarea; |
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341 | |
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342 | ctx->do_drawing = TRUE; |
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343 | ctx->do_scrolling = TRUE; |
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344 | ctx->do_invert = TRUE; |
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345 | |
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346 | gtk_signal_connect (GTK_OBJECT (drawingarea), "expose_event", |
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347 | (GtkSignalFunc) test_expose, ctx); |
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348 | |
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349 | buttonbar = gtk_hbox_new (FALSE, 5); |
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350 | gtk_box_pack_start (GTK_BOX (vbox), buttonbar, FALSE, FALSE, 0); |
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351 | |
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352 | button = check_button ("Do drawing", &ctx->do_drawing); |
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353 | gtk_container_add (GTK_CONTAINER (buttonbar), button); |
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354 | |
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355 | button = check_button ("Do scrolling", &ctx->do_scrolling); |
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356 | gtk_container_add (GTK_CONTAINER (buttonbar), button); |
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357 | |
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358 | button = check_button ("Do invert", &ctx->do_invert); |
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359 | gtk_container_add (GTK_CONTAINER (buttonbar), button); |
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360 | |
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361 | button = gtk_button_new_with_label ("Start scroll test"); |
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362 | gtk_container_add (GTK_CONTAINER (buttonbar), button); |
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363 | gtk_signal_connect (GTK_OBJECT (button), "clicked", |
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364 | (GtkSignalFunc) start_scrolling, ctx); |
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365 | |
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366 | ctx->status = gtk_label_new (""); |
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367 | gtk_box_pack_start (GTK_BOX (vbox), ctx->status, FALSE, FALSE, 2); |
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368 | |
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369 | gtk_widget_show_all (topwin); |
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370 | |
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371 | return ctx; |
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372 | } |
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373 | |
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374 | static void set_text (TestCtx *ctx, const char *fn) { |
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375 | FILE *f; |
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376 | char line[256]; |
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377 | int n_lines; |
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378 | char **lines; |
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379 | |
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380 | lines = NULL; |
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381 | |
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382 | f = fopen (fn, "r"); |
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383 | if (f == NULL) { |
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384 | g_warning ("Error opening file %s\n", fn); |
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385 | return; |
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386 | } |
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387 | n_lines = 0; |
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388 | for (;;) { |
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389 | int len; |
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390 | |
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391 | if (fgets (line, sizeof(line), f) == NULL) |
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392 | break; |
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393 | if (n_lines == 0) |
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394 | lines = g_new (char *, 1); |
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395 | else if (!(n_lines & (n_lines - 1))) { |
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396 | lines = g_renew (char *, lines, n_lines << 1); |
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397 | } |
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398 | |
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399 | g_assert (lines != NULL); |
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400 | |
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401 | len = strlen (line); |
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402 | if (len > 0 && line[len - 1] == '\n') |
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403 | line[--len] = 0; |
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404 | while (len > 0 && line[len - 1] == '\r') |
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405 | line[--len] = 0; |
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406 | lines[n_lines++] = g_strdup (line); |
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407 | } |
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408 | fclose (f); |
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409 | ctx->n_lines = n_lines; |
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410 | ctx->lines = lines; |
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411 | } |
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412 | |
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413 | int main(int argc, char **argv) |
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414 | { |
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415 | char *zoom_str = "1.0"; |
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416 | |
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417 | gint font_width = 36; |
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418 | gint font_height = 36; |
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419 | char *font_file_name = "/usr/share/fonts/default/Type1/n021003l.pfb"; |
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420 | char *add_font_file_name = NULL; |
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421 | char *text_file_name = "rsvg-ft.c"; |
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422 | |
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423 | poptContext optCtx; |
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424 | struct poptOption optionsTable[] = |
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425 | { |
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426 | {"zoom", 'z', POPT_ARG_STRING, &zoom_str, 0, NULL, "zoom factor"}, |
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427 | {"font-width", 'w', POPT_ARG_INT, &font_width, 0, NULL, "Font Width"}, |
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428 | {"font-height", 'h', POPT_ARG_INT, &font_height, 0, NULL, "Font Height"}, |
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429 | {"font-file-name", 'f', POPT_ARG_STRING, &font_file_name, 0, NULL, "Font File Name"}, |
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430 | {"add-font-file-name", 'a', POPT_ARG_STRING, &add_font_file_name, 0, NULL, "Additional Font File Name"}, |
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431 | {"text-file-name", 't', POPT_ARG_STRING, &text_file_name, 0, NULL, "Text"}, |
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432 | POPT_AUTOHELP {NULL, 0, 0, NULL, 0} |
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433 | }; |
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434 | char c; |
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435 | const char *const *args; |
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436 | TestCtx *ctx; |
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437 | |
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438 | gtk_init (&argc, &argv); |
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439 | |
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440 | gdk_rgb_init (); |
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441 | |
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442 | gtk_widget_set_default_colormap (gdk_rgb_get_cmap ()); |
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443 | gtk_widget_set_default_visual (gdk_rgb_get_visual ()); |
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444 | |
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445 | optCtx = |
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446 | poptGetContext("test-ft", argc, (const char **) argv, |
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447 | optionsTable, 0); |
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448 | |
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449 | c = poptGetNextOpt(optCtx); |
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450 | args = poptGetArgs(optCtx); |
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451 | |
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452 | ctx = new_test_window (font_file_name, add_font_file_name, 640, 480); |
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453 | |
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454 | set_text (ctx, text_file_name); |
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455 | |
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456 | gtk_main (); |
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457 | |
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458 | return 0; |
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459 | } |
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