Mercurial > cropper

annotate callbacks.c @ 13:13bc21684b8a

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added zooming with buttons
author meillo@marmaro.de
date Thu, 04 Mar 2010 17:05:38 +0100
parents c18ba4ea1514
children da18f2d4f92f
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1 #include <gtk/gtk.h>
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2 #include <gdk-pixbuf/gdk-pixbuf.h>
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3 #include <gdk/gdkkeysyms.h>
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4 #include "main.h"
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5 #include "callbacks.h"
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6 #include "support.h"
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7
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8 int image_width;
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9 int image_height;
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10 float inc = 0.3;
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11 float zoom = 1.0;
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12
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13
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14 /*
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15 void
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16 update_spin_button_ratio(GtkWidget* spinbutton)
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17 {
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18 g_print("ratio change: %f\n", ratio);
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19 on_ratio_w_spinbutton_value_changed(spinbutton, NULL);
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20 }
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21
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22
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23 void
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24 on_ratio_none_activate(GtkMenuItem* menuitem, gpointer user_data)
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25 {
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26 ratio = 1;
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27 update_spin_button_ratio(lookup_widget(cropper_window, "ratio_w_spinbutton"));
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28 }
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30
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31 void
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32 on_ratio_square_activate(GtkMenuItem* menuitem, gpointer user_data)
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33 {
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34 ratio = 1;
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35 update_spin_button_ratio(lookup_widget(cropper_window, "ratio_w_spinbutton"));
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36 }
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37
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38
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39 void
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40 on_ratio_4x3_activate(GtkMenuItem* menuitem, gpointer user_data)
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41 {
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42 ratio = 4.0/3.0;
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43 update_spin_button_ratio(lookup_widget(cropper_window, "ratio_w_spinbutton"));
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44 }
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46
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47 void
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48 on_ratio_3x2_activate(GtkMenuItem* menuitem, gpointer user_data)
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49 {
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50 ratio = 1.5;
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51 update_spin_button_ratio(lookup_widget(cropper_window, "ratio_w_spinbutton"));
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52 }
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53
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54
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55 void
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56 on_ratio_custom_activate(GtkMenuItem* menuitem, gpointer user_data)
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57 {
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58 ratio = gtk_spin_button_get_value(lookup_widget(cropper_window, "ratio_w_spinbutton"))
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59 / gtk_spin_button_get_value(lookup_widget(cropper_window, "ratio_h_spinbutton"));
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60 update_spin_button_ratio(lookup_widget(cropper_window, "ratio_w_spinbutton"));
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61 }
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62 */
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63
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64
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68
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70
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71
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72 /*
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73 static void
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74 ratio_optionmenu_changed_cb(GtkOptionMenu* optionmenu, gpointer unser_data)
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75 {
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76 int idx = gtk_option_menu_get_history(optionmenu);
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77 int w = 1, h = 1;
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78 gboolean use_ratio = TRUE;
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79
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80 switch (idx) {
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81 case GTH_CROP_RATIO_NONE:
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82 use_ratio = FALSE;
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83 break;
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84 case GTH_CROP_RATIO_SQUARE:
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85 w = h = 1;
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86 break;
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87 case GTH_CROP_RATIO_IMAGE:
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88 w = lookup_widget(cropper_window, "image_width");
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89 h = lookup_widget(cropper_window, "image_height");
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90 break;
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91 case GTH_CROP_RATIO_DISPLAY:
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92 w = lookup_widget(cropper_window, "display_width");
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93 h = lookup_widget(cropper_window, "display_height");
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94 break;
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95 case GTH_CROP_RATIO_4_3:
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96 w = 4;
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97 h = 3;
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98 break;
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99 case GTH_CROP_RATIO_4_6:
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100 w = 4;
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101 h = 6;
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102 break;
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103 case GTH_CROP_RATIO_CUSTOM:
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104 default:
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105 w = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(
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106 lookup_widget(cropper_window, "ratio_w_spinbutton")));
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107 h = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(
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108 lookup_widget(cropper_window, "ratio_h_spinbutton")));
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109 break;
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110 }
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111
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112 gtk_widget_set_sensitive(lookup_widget(cropper_window, "custom_ratio_box"),
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113 idx == GTH_CROP_RATIO_CUSTOM);
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114 set_spin_value(cropper_window, lookup_widget(cropper_window, "ratio_w_spinbutton"), w);
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115 set_spin_value(cropper_window, lookup_widget(cropper_window, "ratio_h_spinbutton"), h);
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116
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117 gth_image_selector_set_ratio(GTH_IMAGE_SELECTOR(lookup_widget(cropper_window, "crop_image")),
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118 use_ratio, (double) w / h);
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119 }
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120
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121
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122 static void
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123 ratio_value_changed_cb(GtkSpinButton* spin, gpointer unser_data)
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124 {
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125 int w, h;
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126
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127 w = gtk_spin_button_get_value_as_int(lookup_widget(cropper_window, "ratio_w_spinbutton"));
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128 h = gtk_spin_button_get_value_as_int(lookup_widget(cropper_window, "ratio_h_spinbutton"));
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129
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130 gth_image_selector_set_ratio(GTH_IMAGE_SELECTOR(
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131 lookup_widget(cropper_window, "crop_image")), TRUE, (double) w / h);
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132 }
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133
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134
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135 static void
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136 ratio_swap_button_cb(GtkButton* button, gpointer unser_data)
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137 {
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138 int w, h;
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139
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140 w = gtk_spin_button_get_value_as_int(lookup_widget(cropper_window, "ratio_w_spinbutton"));
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141 h = gtk_spin_button_get_value_as_int(lookup_widget(cropper_window, "ratio_h_spinbutton"));
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142
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143 set_spin_value(cropper_window, lookup_widget(cropper_window, "ratio_w_spinbutton"), h);
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144 set_spin_value(cropper_window, lookup_widget(cropper_window, "ratio_h_spinbutton"), w);
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145
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146 gth_image_selector_set_ratio(GTH_IMAGE_SELECTOR(lookup_widget(cropper_window,
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147 "crop_image")), TRUE, (double) h / w);
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148 }
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149
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150 */
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151
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152
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153
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154
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155
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156
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157
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158
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159 /*
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160 void
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161 on_ratio_w_spinbutton_value_changed(GtkSpinButton* spinbutton, gpointer user_data)
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162 {
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163 g_print("spinbutton W - ratio: %f\n", ratio);
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164 gtk_spin_button_set_value(lookup_widget(cropper_window, "ratio_h_spinbutton"),
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165 gtk_spin_button_get_value(spinbutton) / ratio);
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166 }
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167
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168
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169 void
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170 on_ratio_w_spinbutton_change_value(GtkSpinButton* spinbutton, GtkScrollType scroll, gpointer user_data)
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171 {
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172 }
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173
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174
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175 void
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176 on_ratio_h_spinbutton_change_value(GtkSpinButton* spinbutton, GtkScrollType scroll, gpointer user_data)
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177 {
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178 }
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179
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180
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181 void
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182 on_ratio_h_spinbutton_value_changed(GtkSpinButton* spinbutton, gpointer user_data)
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183 {
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184 g_print("spinbutton H - ratio: %f\n", ratio);
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185 gtk_spin_button_set_value(lookup_widget(cropper_window, "ratio_w_spinbutton"),
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186 gtk_spin_button_get_value(spinbutton) * ratio);
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187
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188 }
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189
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190
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191 void
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192 on_ratio_swap_button_clicked(GtkButton* button, gpointer user_data)
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193 {
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194
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195 ratio = 1.0 / ratio;
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196 gtk_spin_button_set_value(lookup_widget(cropper_window, "ratio_w_spinbutton"),
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197 gtk_spin_button_get_value(lookup_widget(cropper_window,
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198 "ratio_h_spinbutton")));
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199 gtk_spin_button_update(lookup_widget(cropper_window, "ratio_w_spinbutton"));
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200
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201 }
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202 */
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203
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204
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205 void
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206 update_title(char* zoom)
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207 {
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208 char title[128];
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209 snprintf(title, 128, "cropper (%s) %dx%d+%d+%d", zoom, w, h, x, y);
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210 gtk_window_set_title(GTK_WINDOW(cropper_window), title);
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211 }
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212
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213
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214 /* zoom */
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215 void
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216 set_zoom()
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217 {
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218 static GdkPixbuf* pixbuf_new;
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219 g_object_unref(pixbuf_new);
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220
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221 pixbuf_new = gdk_pixbuf_scale_simple(image_buffer, image_width*zoom, image_height*zoom,
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222 GDK_INTERP_BILINEAR);
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223 gtk_image_set_from_pixbuf((GtkImage*) lookup_widget(cropper_window, "image_area"), pixbuf_new);
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224 }
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225
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226 void
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227 on_zoom_in_button_clicked(GtkObject* object, gpointer user_data)
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228 {
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229 zoom *= 1 + inc;
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230 set_zoom();
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231 }
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232
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233 void
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234 on_zoom_out_button_clicked(GtkObject* object, gpointer user_data)
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235 {
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236 zoom *= 1 - inc;
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237 set_zoom();
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238 }
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239
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240 void
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241 on_zoom_100_button_clicked(GtkObject* object, gpointer user_data)
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242 {
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243 zoom = 1.0;
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244 set_zoom();
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245 }
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246
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247 void
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248 on_zoom_fit_button_clicked(GtkObject* object, gpointer user_data)
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249 {
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250 int w, h;
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251 float zw, zh;
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252 GtkWidget* image_a;
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253
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254 image_a = (GtkWidget*) lookup_widget(cropper_window, "image_area");
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255 gdk_drawable_get_size(image_a->window, &w, &h);
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256
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257 zw = w*1.0 / image_width;
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258 zh = h*1.0 / image_height;
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259
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260 zoom = (zw < zh) ? zw : zh;
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261 set_zoom();
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262 }
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263
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264
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265
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266
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267
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268
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269
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270 void
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271 on_crop_clicked(GtkButton* button, gpointer user_data)
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272 {
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273 char crop_call[256];
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274
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275 sprintf(crop_call, "echo \"convert -crop %ix%i+%i+%i %s cropped_%s\"",
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276 gtk_spin_button_get_value_as_int((GtkSpinButton*) lookup_widget(cropper_window,
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277 "crop_width_spinbutton")),
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278 gtk_spin_button_get_value_as_int((GtkSpinButton*) lookup_widget(cropper_window,
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279 "crop_height_spinbutton")),
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280 gtk_spin_button_get_value_as_int((GtkSpinButton*) lookup_widget(cropper_window,
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281 "crop_x_spinbutton")),
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282 gtk_spin_button_get_value_as_int((GtkSpinButton*) lookup_widget(cropper_window,
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283 "crop_y_spinbutton")),
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284 image_filename,
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285 image_filename
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286 );
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287 system(crop_call);
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288 gtk_main_quit();
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289 }
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290
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291
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292 void
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293 on_cropper_window_create(GtkObject* object, gpointer user_data)
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294 {
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295 image_width = gdk_pixbuf_get_width(image_buffer);
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296 image_height = gdk_pixbuf_get_height(image_buffer);
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297
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298 /*
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299 image_buffer = gdk_pixbuf_new_from_file(image_filename, NULL);
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300 image_area = gtk_image_new_from_pixbuf(image_buffer);
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301
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302 int w, h;
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303 GtkWidget* image_a;
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304
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305 image_a = (GtkWidget*) lookup_widget(cropper_window, "image_area");
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306 gdk_drawable_get_size(image_a->window, &w, &h);
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307
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308 image_width = w - 200;
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309 image_height = h - 150;
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310 set_zoom();
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311 */
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312 }
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313
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314 void
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315 on_cropper_window_destroy(GtkObject* object, gpointer user_data)
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316 {
0
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317 gtk_main_quit();
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318 }
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319
13
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320
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321
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322
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323 gboolean
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324 on_key_press(GtkWidget* window, GdkEventKey* pKey, gpointer userdata)
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325 {
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326 if (pKey->type != GDK_KEY_PRESS) {
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327 return FALSE;
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328 }
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329 switch (pKey->keyval) {
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330 case GDK_plus:
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331 on_zoom_in_button_clicked(NULL, userdata);
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332 break;
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333 case GDK_minus:
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334 on_zoom_out_button_clicked(NULL, userdata);
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335 break;
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336 case GDK_0:
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337 on_zoom_100_button_clicked(NULL, userdata);
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338 break;
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339 case GDK_f:
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340 on_zoom_fit_button_clicked(NULL, userdata);
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341 break;
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342 }
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343 return TRUE;
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344 }
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345
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346