root / branches / simulator / projects / simulator / simulator / gui / gtk_environment_view.c @ 976
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1 | 962 | bcoltin | #include <math.h> |
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2 | #include <stdlib.h> |
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3 | #include <stdio.h> |
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4 | #include <sys/time.h> |
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5 | #include <string.h> |
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6 | |||
7 | #include <gtk/gtkmain.h> |
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8 | #include <gtk/gtksignal.h> |
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9 | |||
10 | #include "gtk_environment_view.h" |
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11 | |||
12 | #define ENVIRONMENT_VIEW_MIN_WIDTH 100 |
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13 | #define ENVIRONMENT_VIEW_MIN_HEIGHT 50 |
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14 | |||
15 | static GtkWidgetClass* parent_class = NULL; |
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16 | |||
17 | static void gtk_environment_view_class_init(GtkEnvironmentViewClass* environmentClass); |
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18 | static void gtk_environment_view_init(GtkEnvironmentView* view); |
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19 | static void gtk_environment_view_destroy(GtkObject* object); |
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20 | |||
21 | static void gtk_environment_view_size_request(GtkWidget* widget, |
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22 | GtkRequisition* req); |
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23 | static void gtk_environment_view_realize(GtkWidget* widget); |
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24 | static void gtk_environment_view_size_allocate(GtkWidget* widget, GtkAllocation* a); |
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25 | static gboolean gtk_environment_view_expose(GtkWidget* widget,
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26 | GdkEventExpose* event); |
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27 | |||
28 | static gboolean gtk_environment_view_mouse_down(GtkWidget* widget,
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29 | GdkEventButton* event); |
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30 | static gboolean gtk_environment_view_mouse_release(GtkWidget* widget,
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31 | GdkEventButton* event); |
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32 | static gboolean gtk_environment_view_mouse_move(GtkWidget* widget,
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33 | GdkEventMotion* event); |
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34 | |||
35 | GtkType gtk_environment_view_get_type(void)
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36 | { |
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37 | static GtkType environment_view_type = 0; |
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38 | if (!environment_view_type)
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39 | { |
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40 | static const GtkTypeInfo environment_view_info = |
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41 | { |
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42 | "GtkEnvironmentView",
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43 | sizeof(GtkEnvironmentView),
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44 | sizeof(GtkEnvironmentViewClass),
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45 | (GtkClassInitFunc)gtk_environment_view_class_init, |
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46 | (GtkObjectInitFunc)gtk_environment_view_init, |
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47 | NULL, NULL, (GtkClassInitFunc)NULL |
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48 | }; |
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49 | |||
50 | environment_view_type = gtk_type_unique(GTK_TYPE_WIDGET, |
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51 | &environment_view_info); |
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52 | } |
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53 | |||
54 | return environment_view_type;
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55 | } |
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56 | |||
57 | static void gtk_environment_view_class_init(GtkEnvironmentViewClass* environmentClass) |
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58 | { |
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59 | GtkObjectClass* object_class; |
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60 | GtkWidgetClass* widget_class; |
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61 | |||
62 | object_class = (GtkObjectClass*)environmentClass; |
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63 | widget_class = (GtkWidgetClass*)environmentClass; |
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64 | |||
65 | parent_class = gtk_type_class(gtk_widget_get_type()); |
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66 | |||
67 | object_class->destroy = gtk_environment_view_destroy; |
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68 | |||
69 | widget_class->realize = gtk_environment_view_realize; |
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70 | widget_class->expose_event = gtk_environment_view_expose; |
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71 | widget_class->size_request = gtk_environment_view_size_request; |
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72 | widget_class->size_allocate = gtk_environment_view_size_allocate; |
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73 | widget_class->button_press_event = gtk_environment_view_mouse_down; |
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74 | widget_class->button_release_event = gtk_environment_view_mouse_release; |
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75 | widget_class->motion_notify_event = gtk_environment_view_mouse_move; |
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76 | } |
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77 | |||
78 | GtkWidget* gtk_environment_view_new(void)
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79 | { |
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80 | GtkEnvironmentView* view; |
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81 | view = gtk_type_new(gtk_environment_view_get_type()); |
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82 | |||
83 | return GTK_WIDGET(view);
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84 | } |
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85 | |||
86 | static void gtk_environment_view_init(GtkEnvironmentView* view) |
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87 | { |
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88 | view->topLeftX = -2.0; |
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89 | view->topLeftY = -1.3; |
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90 | view->scale = 2.0 / 800.0; |
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91 | view->width = -1;
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92 | view->height = -1;
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93 | |||
94 | 974 | bcoltin | GTK_WIDGET_SET_FLAGS(&(view->widget), GTK_DOUBLE_BUFFERED); |
95 | |||
96 | 962 | bcoltin | view->mouseDown = 0;
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97 | } |
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98 | |||
99 | static void gtk_environment_view_destroy(GtkObject* object) |
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100 | { |
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101 | GtkEnvironmentView* view; |
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102 | g_return_if_fail(object != NULL);
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103 | g_return_if_fail(GTK_IS_ENVIRONMENT_VIEW(object)); |
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104 | |||
105 | view = GTK_ENVIRONMENT_VIEW(object); |
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106 | |||
107 | if (GTK_OBJECT_CLASS(parent_class)->destroy)
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108 | (* GTK_OBJECT_CLASS(parent_class)->destroy) (object); |
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109 | } |
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110 | |||
111 | static void gtk_environment_view_realize(GtkWidget* widget) |
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112 | { |
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113 | GtkEnvironmentView* view; |
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114 | GdkWindowAttr attributes; |
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115 | gint attributes_mask; |
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116 | |||
117 | g_return_if_fail( widget != NULL);
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118 | g_return_if_fail( GTK_IS_ENVIRONMENT_VIEW(widget)); |
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119 | |||
120 | GTK_WIDGET_SET_FLAGS(widget, GTK_REALIZED); |
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121 | view = GTK_ENVIRONMENT_VIEW(widget); |
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122 | |||
123 | attributes.x = widget->allocation.x; |
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124 | attributes.y = widget->allocation.y; |
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125 | attributes.width = widget->allocation.width; |
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126 | attributes.height = widget->allocation.height; |
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127 | attributes.wclass = GDK_INPUT_OUTPUT; |
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128 | attributes.window_type = GDK_WINDOW_CHILD; |
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129 | attributes.event_mask = gtk_widget_get_events(widget) | |
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130 | GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | |
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131 | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK | |
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132 | GDK_POINTER_MOTION_HINT_MASK; |
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133 | attributes.visual = gtk_widget_get_visual(widget); |
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134 | attributes.colormap = gtk_widget_get_colormap(widget); |
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135 | |||
136 | attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP; |
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137 | widget->window = gdk_window_new(widget->parent->window, &attributes, |
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138 | attributes_mask); |
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139 | gdk_window_set_user_data(widget->window, widget); |
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140 | widget->style = gtk_style_attach(widget->style, widget->window); |
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141 | gtk_style_set_background(widget->style, widget->window, |
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142 | GTK_STATE_NORMAL); |
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143 | } |
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144 | |||
145 | static void gtk_environment_view_size_request(GtkWidget* widget, |
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146 | GtkRequisition* req) |
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147 | { |
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148 | if (req->width < ENVIRONMENT_VIEW_MIN_WIDTH)
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149 | req->width = ENVIRONMENT_VIEW_MIN_WIDTH; |
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150 | if (req->height < ENVIRONMENT_VIEW_MIN_HEIGHT)
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151 | req->height = ENVIRONMENT_VIEW_MIN_HEIGHT; |
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152 | } |
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153 | |||
154 | static void gtk_environment_view_size_allocate(GtkWidget* widget, GtkAllocation* a) |
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155 | { |
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156 | GtkEnvironmentView* view; |
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157 | |||
158 | g_return_if_fail(widget != NULL);
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159 | g_return_if_fail(GTK_IS_ENVIRONMENT_VIEW(widget)); |
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160 | g_return_if_fail(a != NULL);
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161 | |||
162 | view = GTK_ENVIRONMENT_VIEW(widget); |
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163 | widget->allocation = *a; |
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164 | |||
165 | view->width = a->width; |
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166 | view->height = a->height; |
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167 | |||
168 | if (GTK_WIDGET_REALIZED(widget))
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169 | { |
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170 | gdk_window_move_resize(widget->window, a->x, a->y, a->width, a->height); |
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171 | } |
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172 | } |
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173 | |||
174 | static gboolean gtk_environment_view_expose(GtkWidget* widget,
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175 | GdkEventExpose* event) |
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176 | { |
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177 | GtkEnvironmentView* view; |
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178 | |||
179 | if (widget == NULL || !GTK_IS_ENVIRONMENT_VIEW(widget) || event == NULL) |
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180 | return FALSE;
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181 | if (event->count > 0) |
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182 | return FALSE;
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183 | |||
184 | view = GTK_ENVIRONMENT_VIEW(widget); |
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185 | |||
186 | 974 | bcoltin | gdk_draw_rectangle(widget->window, widget->style->fg_gc[ |
187 | GTK_WIDGET_STATE(widget)], 0, 100, 100, 100, 100); |
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188 | |||
189 | gdk_draw_arc(widget->window, |
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190 | widget->style->fg_gc[GTK_WIDGET_STATE(widget)], FALSE, 0, 0, |
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191 | 100, 100, 0, 360*64); |
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192 | |||
193 | 962 | bcoltin | return FALSE;
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194 | } |
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195 | |||
196 | static gboolean gtk_environment_view_mouse_down(GtkWidget* widget,
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197 | GdkEventButton* event) |
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198 | { |
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199 | GtkEnvironmentView* view; |
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200 | |||
201 | if (widget == NULL || !GTK_IS_ENVIRONMENT_VIEW(widget) || event == NULL) |
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202 | return FALSE;
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203 | |||
204 | view = GTK_ENVIRONMENT_VIEW(widget); |
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205 | |||
206 | if (event->button != 1) |
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207 | return FALSE;
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208 | |||
209 | view->mouseDownX = event->x; |
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210 | view->mouseDownY = event->y; |
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211 | view->mouseX = event->x; |
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212 | view->mouseY = event->y; |
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213 | view->mouseDown = 1;
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214 | |||
215 | return FALSE;
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216 | } |
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217 | |||
218 | static gboolean gtk_environment_view_mouse_release(GtkWidget* widget,
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219 | GdkEventButton* event) |
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220 | { |
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221 | GtkEnvironmentView* view; |
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222 | double x1, x2, y1, y2;
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223 | int w, h;
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224 | |||
225 | if (widget == NULL || !GTK_IS_ENVIRONMENT_VIEW(widget) || event == NULL) |
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226 | return FALSE;
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227 | |||
228 | view = GTK_ENVIRONMENT_VIEW(widget); |
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229 | |||
230 | if (event->button != 1 && event->button != 3) |
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231 | return FALSE;
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232 | |||
233 | if (event->button == 1) |
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234 | view->mouseDown = 0;
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235 | view->mouseX = event->x; |
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236 | view->mouseY = event->y; |
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237 | w = abs(view->mouseX - view->mouseDownX); |
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238 | h = abs(view->mouseY - view->mouseDownY); |
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239 | |||
240 | // if the box is big, zoom to the box
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241 | if (event->button == 1 && (w >= 10 || h >= 10)) |
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242 | { |
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243 | // we need to make sure the box is to scale
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244 | // scale to height
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245 | if (fabs((double)w / h) <= fabs((double)view->width / view->height)) |
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246 | { |
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247 | w = (int)((double)view->width / view->height * h); |
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248 | if (view->mouseX < view->mouseDownX)
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249 | view->mouseX = view->mouseDownX - w; |
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250 | else
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251 | view->mouseX = view->mouseDownX + w; |
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252 | } |
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253 | // scale to width
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254 | else
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255 | { |
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256 | h = (int)((double)view->height / view->width * w); |
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257 | if (view->mouseY < view->mouseDownY)
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258 | view->mouseY = view->mouseDownY - h; |
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259 | else
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260 | view->mouseY = view->mouseDownY + h; |
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261 | } |
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262 | |||
263 | x1 = view->mouseX * view->scale + view->topLeftX; |
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264 | y1 = view->mouseY * view->scale + view->topLeftY; |
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265 | x2 = view->mouseDownX * view->scale + view->topLeftX; |
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266 | y2 = view->mouseDownY * view->scale + view->topLeftY; |
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267 | if (x2 < x1)
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268 | x1 = x2; |
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269 | if (y2 < y1)
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270 | y1 = y2; |
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271 | |||
272 | view->scale = (w * view->scale) / view->width; |
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273 | view->topLeftX = x1; |
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274 | view->topLeftY = y1; |
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275 | } |
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276 | else
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277 | { |
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278 | x1 = view->mouseX * view->scale + view->topLeftX; |
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279 | y1 = view->mouseY * view->scale + view->topLeftY; |
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280 | |||
281 | // zoom in on left click, out on right click
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282 | if (event->button == 1) |
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283 | view->scale /= 2.0; |
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284 | else
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285 | view->scale *= 2.0; |
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286 | view->topLeftX = x1 - view->width / 2 * view->scale;
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287 | view->topLeftY = y1 - view->height / 2 * view->scale;
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288 | } |
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289 | |||
290 | return FALSE;
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291 | } |
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292 | |||
293 | static gboolean gtk_environment_view_mouse_move(GtkWidget* widget,
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294 | GdkEventMotion* event) |
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295 | { |
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296 | GtkEnvironmentView* view; |
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297 | |||
298 | if (widget == NULL || !GTK_IS_ENVIRONMENT_VIEW(widget) || event == NULL) |
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299 | return FALSE;
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300 | |||
301 | view = GTK_ENVIRONMENT_VIEW(widget); |
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302 | |||
303 | view->mouseX = event->x; |
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304 | view->mouseY = event->y; |
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305 | |||
306 | if (!view->mouseDown)
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307 | return FALSE;
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308 | |||
309 | // we need to make sure the new view is to scale
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310 | int w = abs(view->mouseX - view->mouseDownX);
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311 | int h = abs(view->mouseY - view->mouseDownY);
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312 | // scale to height
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313 | if (fabs((double)w / h) <= fabs((double)view->width / view->height)) |
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314 | { |
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315 | w = (int)((double)view->width / view->height * h); |
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316 | if (view->mouseX < view->mouseDownX)
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317 | view->mouseX = view->mouseDownX - w; |
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318 | else
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319 | view->mouseX = view->mouseDownX + w; |
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320 | } |
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321 | // scale to width
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322 | else
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323 | { |
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324 | h = (int)((double)view->height / view->width * w); |
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325 | if (view->mouseY < view->mouseDownY)
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326 | view->mouseY = view->mouseDownY - h; |
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327 | else
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328 | view->mouseY = view->mouseDownY + h; |
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329 | } |
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330 | |||
331 | gtk_widget_queue_draw_area(widget, 0, 0, view->width, view->height); |
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332 | |||
333 | return FALSE;
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334 | } |
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335 | |||
336 | 971 | bcoltin | /*gdk_threads_enter();
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337 | gtk_widget_queue_draw_area(widget, 0, row, view->width, 1);
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338 | gdk_threads_leave();*/
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