| 1 | |
| 2 | #include "Drawing.h" |
| 3 | #include <gtk/gtk.h> |
| 4 | #include <gdk/gdk.h> |
| 5 | |
| 6 | /***************************************************************************** |
| 7 | * Drawing functions * |
| 8 | *****************************************************************************/ |
| 9 | |
| 10 | typedef enum |
| 11 | { |
| 12 | RED, |
| 13 | GREEN, |
| 14 | BLUE, |
| 15 | WHITE, |
| 16 | BLACK |
| 17 | |
| 18 | } ControlFlowColors; |
| 19 | |
| 20 | /* Vector of unallocated colors */ |
| 21 | static GdkColor CF_Colors [] = |
| 22 | { |
| 23 | { 0, 0xffff, 0x0000, 0x0000 }, // RED |
| 24 | { 0, 0x0000, 0xffff, 0x0000 }, // GREEN |
| 25 | { 0, 0x0000, 0x0000, 0xffff }, // BLUE |
| 26 | { 0, 0xffff, 0xffff, 0xffff }, // WHITE |
| 27 | { 0, 0x0000, 0x0000, 0x0000 } // BLACK |
| 28 | }; |
| 29 | |
| 30 | |
| 31 | struct _Drawing_t { |
| 32 | GtkWidget *Drawing_Area_V; |
| 33 | GdkPixmap *Pixmap; |
| 34 | |
| 35 | gint height, width, depth; |
| 36 | |
| 37 | }; |
| 38 | |
| 39 | void test_draw(Drawing_t *Drawing) |
| 40 | { |
| 41 | GdkRectangle update_rect; |
| 42 | // GdkColor color = { 0, 65535, 65535, 65535 }; |
| 43 | |
| 44 | // gdk_colormap_alloc_color(gdk_rgb_get_cmap(), &color, 0, 1); |
| 45 | |
| 46 | // GdkGC *gc = |
| 47 | // Drawing->Drawing_Area_V-> |
| 48 | // style->fg_gc[GTK_WIDGET_STATE (Drawing->Drawing_Area_V)]; |
| 49 | // gdk_gc_set_foreground(gc, &color); |
| 50 | update_rect.x = 50; |
| 51 | update_rect.y = 50; |
| 52 | update_rect.width = 1000; |
| 53 | update_rect.height = 1000; |
| 54 | gdk_draw_rectangle (Drawing->Pixmap, |
| 55 | Drawing->Drawing_Area_V->style->black_gc, |
| 56 | TRUE, |
| 57 | 50, 50, |
| 58 | 1000, |
| 59 | 1000); |
| 60 | |
| 61 | |
| 62 | //Drawing_draw_line(Drawing, 10, 10, 50, 10, |
| 63 | // Drawing->Drawing_Area_V->style->black_gc); |
| 64 | gtk_widget_draw (Drawing->Drawing_Area_V, &update_rect); |
| 65 | |
| 66 | // Drawing_Refresh( Drawing, 0, 0, 30, 30); |
| 67 | } |
| 68 | |
| 69 | void Drawing_Data_Request(Drawing_t *Drawing, |
| 70 | GdkPixmap *Pixmap, |
| 71 | gint x, gint y, |
| 72 | gint width, |
| 73 | gint height) |
| 74 | { |
| 75 | gdk_draw_rectangle (Pixmap, |
| 76 | Drawing->Drawing_Area_V->style->white_gc, |
| 77 | TRUE, |
| 78 | x, y, |
| 79 | width, // do not overlap |
| 80 | height); |
| 81 | |
| 82 | Drawing_draw_line(Drawing, Pixmap, 10, 10, 50, 10, |
| 83 | Drawing->Drawing_Area_V->style->black_gc); |
| 84 | |
| 85 | } |
| 86 | |
| 87 | /* Callbacks */ |
| 88 | |
| 89 | |
| 90 | /* Create a new backing pixmap of the appropriate size */ |
| 91 | static gboolean |
| 92 | configure_event( GtkWidget *widget, GdkEventConfigure *event, |
| 93 | gpointer user_data) |
| 94 | { |
| 95 | Drawing_t *Drawing = (Drawing_t*)user_data; |
| 96 | |
| 97 | GdkPixmap *Pixmap = gdk_pixmap_new(widget->window, |
| 98 | widget->allocation.width, |
| 99 | widget->allocation.height, |
| 100 | -1); |
| 101 | |
| 102 | if(Drawing->Pixmap == NULL) |
| 103 | { |
| 104 | Drawing->Pixmap = gdk_pixmap_new(widget->window, |
| 105 | widget->allocation.width, |
| 106 | widget->allocation.height, |
| 107 | -1); |
| 108 | Drawing->width = widget->allocation.width; |
| 109 | Drawing->height = widget->allocation.height; |
| 110 | |
| 111 | /* Initial data request */ |
| 112 | Drawing_Data_Request(Drawing, Drawing->Pixmap, 0, 0, |
| 113 | widget->allocation.width, |
| 114 | widget->allocation.height); |
| 115 | |
| 116 | } |
| 117 | // /* Draw empty background */ |
| 118 | // gdk_draw_rectangle (Pixmap, |
| 119 | // widget->style->black_gc, |
| 120 | // TRUE, |
| 121 | // 0, 0, |
| 122 | // widget->allocation.width, |
| 123 | // widget->allocation.height); |
| 124 | |
| 125 | /* Copy old data to new pixmap */ |
| 126 | gdk_draw_drawable (Pixmap, |
| 127 | widget->style->white_gc, |
| 128 | Drawing->Pixmap, |
| 129 | 0, 0, |
| 130 | 0, 0, |
| 131 | -1, -1); |
| 132 | |
| 133 | /* Request data for missing space */ |
| 134 | Drawing_Data_Request(Drawing, Pixmap, Drawing->width, 0, |
| 135 | widget->allocation.width - Drawing->width, |
| 136 | widget->allocation.height); |
| 137 | Drawing_Data_Request(Drawing, Pixmap, 0, Drawing->height, |
| 138 | Drawing->width, |
| 139 | widget->allocation.height - Drawing->height); |
| 140 | |
| 141 | // gdk_draw_rectangle (Pixmap, |
| 142 | // widget->style->white_gc, |
| 143 | // TRUE, |
| 144 | // Drawing->width, 0, |
| 145 | // widget->allocation.width - |
| 146 | // Drawing->width, |
| 147 | // widget->allocation.height); |
| 148 | |
| 149 | // gdk_draw_rectangle (Pixmap, |
| 150 | // widget->style->white_gc, |
| 151 | // TRUE, |
| 152 | // 0, Drawing->height, |
| 153 | // Drawing->width, // do not overlap |
| 154 | // widget->allocation.height - |
| 155 | // Drawing->height); |
| 156 | |
| 157 | |
| 158 | |
| 159 | g_critical("drawing configure event"); |
| 160 | |
| 161 | |
| 162 | if (Drawing->Pixmap) |
| 163 | gdk_pixmap_unref(Drawing->Pixmap); |
| 164 | |
| 165 | Drawing->Pixmap = Pixmap; |
| 166 | Drawing->width = widget->allocation.width; |
| 167 | Drawing->height = widget->allocation.height; |
| 168 | |
| 169 | return TRUE; |
| 170 | } |
| 171 | |
| 172 | |
| 173 | /* Redraw the screen from the backing pixmap */ |
| 174 | static gboolean |
| 175 | expose_event( GtkWidget *widget, GdkEventExpose *event, gpointer user_data ) |
| 176 | { |
| 177 | Drawing_t *Drawing = (Drawing_t*)user_data; |
| 178 | g_critical("drawing expose event"); |
| 179 | |
| 180 | gdk_draw_pixmap(widget->window, |
| 181 | widget->style->fg_gc[GTK_WIDGET_STATE (widget)], |
| 182 | Drawing->Pixmap, |
| 183 | event->area.x, event->area.y, |
| 184 | event->area.x, event->area.y, |
| 185 | event->area.width, event->area.height); |
| 186 | |
| 187 | return FALSE; |
| 188 | } |
| 189 | |
| 190 | Drawing_t *Drawing_construct(void) |
| 191 | { |
| 192 | Drawing_t *Drawing = g_new(Drawing_t, 1); |
| 193 | |
| 194 | Drawing->Drawing_Area_V = gtk_drawing_area_new (); |
| 195 | |
| 196 | //gtk_widget_set_size_request(Drawing->Drawing_Area_V->window, 50, 50); |
| 197 | g_object_set_data_full( |
| 198 | G_OBJECT(Drawing->Drawing_Area_V), |
| 199 | "Link_Drawing_Data", |
| 200 | Drawing, |
| 201 | (GDestroyNotify)Drawing_destroy); |
| 202 | |
| 203 | //gtk_widget_modify_bg( Drawing->Drawing_Area_V, |
| 204 | // GTK_STATE_NORMAL, |
| 205 | // &CF_Colors[BLACK]); |
| 206 | |
| 207 | //gdk_window_get_geometry(Drawing->Drawing_Area_V->window, |
| 208 | // NULL, NULL, |
| 209 | // &(Drawing->width), |
| 210 | // &(Drawing->height), |
| 211 | // -1); |
| 212 | |
| 213 | //Drawing->Pixmap = gdk_pixmap_new( |
| 214 | // Drawing->Drawing_Area_V->window, |
| 215 | // Drawing->width, |
| 216 | // Drawing->height, |
| 217 | // Drawing->depth); |
| 218 | |
| 219 | Drawing->Pixmap = NULL; |
| 220 | |
| 221 | // Drawing->Pixmap = gdk_pixmap_new(Drawing->Drawing_Area_V->window, |
| 222 | // Drawing->Drawing_Area_V->allocation.width, |
| 223 | // Drawing->Drawing_Area_V->allocation.height, |
| 224 | // -1); |
| 225 | |
| 226 | |
| 227 | g_signal_connect (G_OBJECT(Drawing->Drawing_Area_V), |
| 228 | "configure_event", |
| 229 | G_CALLBACK (configure_event), |
| 230 | (gpointer)Drawing); |
| 231 | |
| 232 | g_signal_connect (G_OBJECT(Drawing->Drawing_Area_V), |
| 233 | "expose_event", |
| 234 | G_CALLBACK (expose_event), |
| 235 | (gpointer)Drawing); |
| 236 | |
| 237 | return Drawing; |
| 238 | } |
| 239 | |
| 240 | void Drawing_destroy(Drawing_t *Drawing) |
| 241 | { |
| 242 | |
| 243 | // Do not unref here, Drawing_t destroyed by it's widget. |
| 244 | //g_object_unref( G_OBJECT(Drawing->Drawing_Area_V)); |
| 245 | |
| 246 | g_free(Drawing); |
| 247 | } |
| 248 | |
| 249 | GtkWidget *Drawing_getWidget(Drawing_t *Drawing) |
| 250 | { |
| 251 | return Drawing->Drawing_Area_V; |
| 252 | } |
| 253 | |
| 254 | /* get_time_from_pixels |
| 255 | * |
| 256 | * Get the time interval from window time and pixels, and pixels requested. This |
| 257 | * function uses TimeMul, which should only be used if the float value is lower |
| 258 | * that 4, and here it's always lower than 1, so it's ok. |
| 259 | */ |
| 260 | void convert_pixels_to_time( |
| 261 | Drawing_t *Drawing, |
| 262 | guint x, |
| 263 | LttTime *window_time_begin, |
| 264 | LttTime *window_time_end, |
| 265 | LttTime *time) |
| 266 | { |
| 267 | LttTime window_time_interval; |
| 268 | |
| 269 | TimeSub(window_time_interval, *window_time_end, *window_time_begin); |
| 270 | |
| 271 | |
| 272 | TimeMul(*time, window_time_interval, |
| 273 | (x/(float)Drawing->width)); |
| 274 | TimeAdd(*time, *window_time_begin, *time); |
| 275 | |
| 276 | } |
| 277 | |
| 278 | |
| 279 | |
| 280 | void convert_time_to_pixels( |
| 281 | LttTime window_time_begin, |
| 282 | LttTime window_time_end, |
| 283 | LttTime time, |
| 284 | Drawing_t *Drawing, |
| 285 | guint *x) |
| 286 | { |
| 287 | LttTime window_time_interval; |
| 288 | float interval_float, time_float; |
| 289 | |
| 290 | TimeSub(window_time_interval, window_time_end, window_time_begin); |
| 291 | |
| 292 | TimeSub(time, time, window_time_begin); |
| 293 | |
| 294 | interval_float = (window_time_interval.tv_sec * NANSECOND_CONST) |
| 295 | + window_time_interval.tv_nsec; |
| 296 | time_float = (time.tv_sec * NANSECOND_CONST) |
| 297 | + time.tv_nsec; |
| 298 | |
| 299 | *x = (guint)(time_float/interval_float * Drawing->width); |
| 300 | |
| 301 | } |
| 302 | |
| 303 | void Drawing_Refresh ( Drawing_t *Drawing, |
| 304 | guint x, guint y, |
| 305 | guint width, guint height) |
| 306 | { |
| 307 | gdk_draw_drawable( |
| 308 | Drawing->Drawing_Area_V->window, |
| 309 | Drawing->Drawing_Area_V-> |
| 310 | style->fg_gc[GTK_WIDGET_STATE (Drawing->Drawing_Area_V)], |
| 311 | GDK_DRAWABLE(Drawing->Pixmap), |
| 312 | x, y, |
| 313 | x, y, |
| 314 | width, height); |
| 315 | } |
| 316 | |
| 317 | |
| 318 | void Drawing_draw_line( Drawing_t *Drawing, |
| 319 | GdkPixmap *Pixmap, |
| 320 | guint x1, guint y1, |
| 321 | guint x2, guint y2, |
| 322 | GdkGC *GC) |
| 323 | { |
| 324 | gdk_draw_line (Pixmap, |
| 325 | GC, |
| 326 | x1, y1, x2, y2); |
| 327 | } |
| 328 | |
| 329 | |
| 330 | |
| 331 | |
| 332 | void Drawing_Resize(Drawing_t *Drawing, guint h, guint w) |
| 333 | { |
| 334 | Drawing->height = h ; |
| 335 | Drawing->width = w ; |
| 336 | |
| 337 | gtk_widget_set_size_request ( Drawing->Drawing_Area_V, |
| 338 | Drawing->width, |
| 339 | Drawing->height); |
| 340 | |
| 341 | |
| 342 | } |
| 343 | |
| 344 | |