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84b74595 AT |
1 | /* (c) 2021 Aaron Taylor <ataylor at subgeniuskitty dot com> */ |
2 | /* See LICENSE.txt file for copyright and license details. */ | |
3 | ||
84b74595 AT |
4 | #include "screenhack.h" |
5 | #include "simulator.h" | |
6 | ||
b1906d46 AT |
7 | // TODO: What should I do about this define? I would like to be able to specify the address so I can do things like display the code itself if nothign interesting happens in RAM. |
8 | #define HEAP_START_ADDRESS 0x20000000 | |
9 | ||
28edd14e AT |
10 | /* -------------------------------------------------------------------------- */ |
11 | /* Front Panel Layout */ | |
12 | /* -------------------------------------------------------------------------- */ | |
13 | ||
14 | // All of these values are in units of 'cells', not 'pixels'. Where applicable, | |
15 | // coordinates refer to the upper-left corner of a cell. See the files | |
16 | // `layout_reference.*` for details. | |
17 | ||
18 | #define OVERALL_WIDTH_IN_CELLS 70 | |
19 | #define HEADER_HEIGHT_IN_CELLS 14 | |
20 | #define FOOTER_HEIGHT_IN_CELLS 2 | |
21 | ||
22 | #define LOGO_X_OFFSET 2 | |
23 | #define LOGO_Y_OFFSET 2 | |
24 | #define LOGO_WIDTH 20 | |
25 | #define LOGO_NAME_HEIGHT 6 | |
26 | #define LOGO_WEBSITE_HEIGHT 2 | |
27 | ||
28 | #define HALT_X_OFFSET 26 | |
29 | #define HALT_Y_OFFSET 2 | |
30 | #define HALT_WIDTH 6 | |
31 | #define HALT_LIGHT_HEIGHT 6 | |
32 | #define HALT_LABEL_HEIGHT 2 | |
33 | ||
34 | #define WORDLINE_BITS_PER_STRIPE 4 | |
35 | #define WORDLINE_WIDTH 32 | |
36 | #define WORDLINE_HEIGHT 1 | |
37 | ||
38 | #define PC_X_OFFSET 36 | |
39 | #define PC_Y_OFFSET 7 | |
40 | #define PC_WIDTH 32 | |
41 | #define PC_LABEL_HEIGHT 2 | |
42 | #define PC_LIGHT_HEIGHT 1 | |
43 | ||
44 | #define SC_X_OFFSET 42 | |
45 | #define SC_Y_OFFSET 2 | |
46 | #define SC_WIDTH 5 | |
47 | #define SC_LABEL_HEIGHT 2 | |
48 | #define SC_LIGHT_HEIGHT 1 | |
49 | ||
50 | #define PSW_N_X_OFFSET 51 | |
51 | #define PSW_Z_X_OFFSET 58 | |
52 | #define PSW_Y_OFFSET 2 | |
53 | #define PSW_LABEL_WIDTH 3 | |
54 | #define PSW_LABEL_HEIGHT 2 | |
55 | #define PSW_LIGHT_WIDTH 1 | |
56 | #define PSW_LIGHT_HEIGHT 1 | |
57 | ||
58 | #define STACK_X_OFFSET 2 | |
59 | #define STACK_Y_OFFSET 12 | |
60 | #define STACK_WIDTH 32 | |
61 | #define STACK_LABEL_HEIGHT 2 | |
62 | #define STACK_LIGHT_HEIGHT 1 | |
63 | ||
64 | #define HEAP_X_OFFSET 36 | |
65 | #define HEAP_Y_OFFSET 12 | |
66 | #define HEAP_WIDTH 32 | |
67 | #define HEAP_LABEL_HEIGHT 2 | |
68 | #define HEAP_LIGHT_HEIGHT 1 | |
69 | ||
84b74595 AT |
70 | /* -------------------------------------------------------------------------- */ |
71 | /* Data Structures */ | |
72 | /* -------------------------------------------------------------------------- */ | |
73 | ||
74 | struct NEDsim { | |
f93fc861 | 75 | // Various X resources |
84b74595 AT |
76 | Display * dpy; |
77 | Window win; | |
78 | GC gc; | |
79 | ||
f93fc861 | 80 | // Tracks the width and height (in pixels) of 'win' on 'dpy'. |
84b74595 AT |
81 | int dpy_width, dpy_height; |
82 | ||
f93fc861 AT |
83 | // To ensure the NED display is always synchronized/valid, we |
84 | // double-buffer. This is that buffer. | |
84b74595 AT |
85 | Pixmap panel; |
86 | ||
f93fc861 AT |
87 | // The front panel is defined in a fixed grid of 'cells' which are then |
88 | // scaled and projected onto the actual screen. This variable tracks the | |
89 | // size of one 'cell' in screen pixels. | |
84b74595 | 90 | int cell_size; |
f93fc861 AT |
91 | // Like above, this variable tracks the scaled size (in pixels) of cell |
92 | // borders when projecting them on the screen. | |
84b74595 | 93 | int border_size; |
f93fc861 AT |
94 | |
95 | // Since the panel will be smaller than the display window, these two | |
96 | // variable track the location (in pixels) of the upper left corner of the | |
97 | // NED panel (pretending it didn't have rounded corners) relative to the | |
98 | // display window's origin. | |
84b74595 | 99 | int origin_x_offset, origin_y_offset; |
f93fc861 AT |
100 | |
101 | // Delay (in microseconds) between clock cycles in the NED CPU. | |
102 | size_t delay; | |
103 | ||
104 | // Since the heap and stack areas are resized to fit the display, this | |
105 | // variable tracks their height. | |
84b74595 AT |
106 | int num_data_rows; |
107 | ||
f93fc861 | 108 | // This is an index into the color_list[] array, selecting a color scheme. |
84b74595 AT |
109 | size_t color_index; |
110 | ||
f93fc861 AT |
111 | // If the display is unsuitable (e.g. too small), this boolean is 'true'. |
112 | // With this, we blank the display but keep the simulation itself running, | |
113 | // allowing the ongoing simulation to display when the situation is | |
114 | // corrected, and allowing us to avoid boring the user with unnecessary | |
115 | // simulation restarts. | |
84b74595 AT |
116 | Bool suitable_display; |
117 | ||
f93fc861 AT |
118 | // The font size is dynamically adjusted based on display size. This |
119 | // variable stores the full font description, including the correct font | |
120 | // size, all in the X11 font specifier format. For example, | |
121 | // -*-helvetica-*-r-*-*-72-*-*-*-*-*-*-* | |
122 | // if the display were using a 72 point helvetica font without emphasis. | |
84b74595 AT |
123 | char * current_font; |
124 | ||
f93fc861 | 125 | // This struct contains all machine state for the simulated NED computer. |
84b74595 AT |
126 | struct NEDstate * nedstate; |
127 | }; | |
128 | ||
129 | struct color_rgb { | |
f93fc861 AT |
130 | // The type 'unsigned short' comes from the XColor struct definition. |
131 | // The red, green, and blue values are always in the range 0 to 65535 | |
132 | // inclusive, independent of the number of bits actually used in the | |
133 | // display hardware. The server scales these values to the range used | |
134 | // by the hardware. Black is represented by (0,0,0), and white is | |
135 | // represented by (65535,65535,65535). | |
84b74595 AT |
136 | unsigned short red, green, blue; |
137 | }; | |
138 | ||
139 | struct color_scheme { | |
f93fc861 | 140 | // The following entries define a full color scheme for a NED panel. |
84b74595 | 141 | struct color_rgb |
f93fc861 AT |
142 | panel_bg, // Empty screen space not taken up by the panel |
143 | panel_fg, // Panel body/faceplate | |
144 | light_on, // Illuminated data indicator | |
145 | light_off, // Non-illuminated data indicator | |
146 | error_on, // Illuminated error indicator | |
147 | error_off, // Non-illuminated error indicator | |
148 | primary, // Primary panel color (see: logo background) | |
149 | secondary, // Secondary panel color (see: "HALT" text background) | |
150 | tertiary, // Tertiary panel color (see: "subgeniuskitty.com" text background) | |
151 | border, // Cell borders | |
152 | text; // Panel text | |
84b74595 AT |
153 | }; |
154 | ||
f93fc861 AT |
155 | // All included color schemes for NEDsim are defined in this array. To select a |
156 | // particular color scheme at runtime, use the `-color N` CLI option. | |
84b74595 | 157 | static struct color_scheme color_list[] = { |
f93fc861 AT |
158 | { // This color scheme is inspired by the KI10 version of the PDP-10. |
159 | // Many RGB values came from: http://www.chdickman.com/pdp8/DECcolors/ | |
84b74595 AT |
160 | {63479,63479,63479}, // 092-XXXX-123 |
161 | { 5140, 2056, 5654}, // 092-XXXX-152 | |
f93fc861 AT |
162 | {65535,11051,15677}, // homemade, derived from 092-XXXX-139 |
163 | {20000,13107,12850}, // homemade, derived from 092-XXXX-154 | |
164 | {65535,13107,12850}, // homemade, derived from 092-XXXX-154 | |
165 | {20000,13107,12850}, // homemade, derived from 092-XXXX-154 | |
84b74595 AT |
166 | { 4112,12850,20046}, // 092-XXXX-145 |
167 | {12336,29555,37008}, // 092-XXXX-151 | |
168 | {30326,24158, 6425}, // 092-XXXX-157 | |
169 | {63479,63479,63479}, // 092-XXXX-123 | |
170 | {63479,63479,63479} // 092-XXXX-123 | |
f93fc861 AT |
171 | }, |
172 | { // This color scheme is (very loosely) inspired by the first version of the PDP-11/70. | |
173 | // Many RGB values came from: http://www.chdickman.com/pdp8/DECcolors/ | |
174 | {63479,63479,63479}, // 092-XXXX-123 | |
175 | { 5140, 2056, 5654}, // 092-XXXX-152 | |
176 | {51400,34952,26682}, // homemade, derived from 092-XXXX-136 | |
177 | {20000,13107,12850}, // homemade, derived from 092-XXXX-154 | |
178 | {65535,13107,12850}, // homemade, derived from 092-XXXX-154 | |
179 | {20000,13107,12850}, // homemade, derived from 092-XXXX-154 | |
180 | {28270, 8995,19532}, // 092-XXXX-140 | |
181 | {40092,11051,15677}, // 092-XXXX-139 | |
182 | {15000,21000, 4000}, // homemade, derived from 092-XXXX-129 | |
183 | {63479,63479,63479}, // 092-XXXX-123 | |
184 | {63479,63479,63479} // 092-XXXX-123 | |
84b74595 AT |
185 | } |
186 | }; | |
187 | ||
188 | /* -------------------------------------------------------------------------- */ | |
189 | /* Helper Functions */ | |
190 | /* -------------------------------------------------------------------------- */ | |
191 | ||
7361f6db AT |
192 | // Fill in boilerplate when selecting colors. |
193 | #define COLOR(X) &color_list[nedsim->color_index].X | |
194 | ||
280460e6 | 195 | // Set foreground color for the current graphics context. |
84b74595 AT |
196 | static void |
197 | set_color(struct NEDsim * nedsim, struct color_rgb * color) | |
198 | { | |
199 | XColor temp; | |
200 | XWindowAttributes xgwa; | |
201 | ||
202 | XGetWindowAttributes(nedsim->dpy, nedsim->win, &xgwa); | |
203 | ||
204 | temp.red = color->red; | |
205 | temp.green = color->green; | |
206 | temp.blue = color->blue; | |
207 | ||
208 | XAllocColor(nedsim->dpy, xgwa.colormap, &temp); | |
209 | XSetForeground(nedsim->dpy, nedsim->gc, temp.pixel); | |
210 | } | |
211 | ||
5a772e24 AT |
212 | // Set font size to fill 'size' cells vertically, minus space for border and |
213 | // padding. There is probably a better way to do this. The current method is | |
214 | // horribly slow. Call this function as few times as possible. | |
84b74595 AT |
215 | static void |
216 | set_font_size(struct NEDsim * nedsim, int size) | |
217 | { | |
218 | // vvv--- for border ---vvv vvv--- for padding ---vvv | |
219 | int desired_height_in_pixels = (size * nedsim->cell_size) - (2 * nedsim->border_size) - (8 * nedsim->border_size); | |
220 | ||
221 | const char * font_size_prefix = "-*-helvetica-*-r-*-*-"; | |
222 | const char * font_size_suffix = "-*-*-*-*-*-*-*"; | |
223 | ||
5a772e24 AT |
224 | // In the buffer, we reserve 100 DIGITS for the font size integer. |
225 | size_t buffer_size = strlen(font_size_prefix) + strlen(font_size_suffix) + 100; | |
84b74595 | 226 | char * font_full_name = malloc(buffer_size); |
5a772e24 AT |
227 | // Start with a 2pt font and work our way up. |
228 | int font_size_in_points = 2; | |
84b74595 AT |
229 | |
230 | while (1) { | |
231 | // Load the font. | |
232 | snprintf(font_full_name, buffer_size, "%s%d%s", font_size_prefix, font_size_in_points, font_size_suffix); | |
233 | XFontStruct * font = XLoadQueryFont(nedsim->dpy, font_full_name); | |
234 | if (!font) { | |
235 | printf("WARNING: Unable to load font %s. Probably gonna look wonky.\n", font_full_name); | |
236 | font = XLoadQueryFont(nedsim->dpy, "fixed"); | |
237 | break; | |
238 | } | |
239 | XSetFont(nedsim->dpy, nedsim->gc, font->fid); | |
240 | ||
241 | // Get the height. | |
242 | int direction, ascent, descent; | |
243 | XCharStruct overall; | |
244 | XTextExtents(font, "X", 1, &direction, &ascent, &descent, &overall); | |
245 | ||
246 | // Compare the height. | |
247 | int height = overall.ascent - overall.descent; | |
248 | if (height == desired_height_in_pixels) { | |
249 | break; | |
250 | } else if (height > desired_height_in_pixels) { | |
251 | font_size_in_points--; | |
252 | snprintf(font_full_name, buffer_size, "%s%d%s", font_size_prefix, font_size_in_points, font_size_suffix); | |
253 | XFontStruct * font = XLoadQueryFont(nedsim->dpy, font_full_name); | |
254 | if (!font) { | |
255 | printf("WARNING: Unable to load font %s. Probably gonna look wonky.\n", font_full_name); | |
256 | font = XLoadQueryFont(nedsim->dpy, "fixed"); | |
257 | break; | |
258 | } | |
259 | XSetFont(nedsim->dpy, nedsim->gc, font->fid); | |
260 | break; | |
261 | } else { | |
262 | font_size_in_points++; | |
263 | } | |
264 | } | |
265 | ||
266 | free(nedsim->current_font); | |
267 | nedsim->current_font = font_full_name; | |
268 | } | |
269 | ||
280460e6 AT |
270 | // Unlike most functions in this program that input/output in units of 'cells', |
271 | // this function uses units of 'pixels' so the caller can track fractional cell | |
272 | // usage (e.g. for centering the text). | |
84b74595 AT |
273 | static void |
274 | get_text_size(struct NEDsim * nedsim, const char * text, int * x_size, int * y_size) | |
275 | { | |
276 | int direction, ascent, descent; | |
277 | XCharStruct overall; | |
278 | XFontStruct * font = XLoadQueryFont(nedsim->dpy, nedsim->current_font); | |
279 | XTextExtents(font, text, strlen(text), &direction, &ascent, &descent, &overall); | |
280 | *x_size = overall.width; | |
281 | *y_size = overall.ascent - overall.descent; | |
282 | } | |
283 | ||
280460e6 | 284 | // When specifying the rectangular area to draw, all coordinates and sizes are |
b1906d46 | 285 | // in units of 'cells'. |
84b74595 | 286 | static void |
33c35ba0 AT |
287 | draw_rect_area(struct NEDsim * nedsim, struct color_rgb * color, |
288 | size_t x_origin, size_t y_origin, size_t x_size, size_t y_size, | |
84b74595 AT |
289 | Bool bord_top, Bool bord_bottom, Bool bord_left, Bool bord_right) |
290 | { | |
280460e6 | 291 | // First fill in the rectangular area... |
84b74595 AT |
292 | x_origin *= nedsim->cell_size; |
293 | x_origin += nedsim->origin_x_offset; | |
294 | y_origin *= nedsim->cell_size; | |
295 | y_origin += nedsim->origin_y_offset; | |
296 | x_size *= nedsim->cell_size; | |
297 | y_size *= nedsim->cell_size; | |
33c35ba0 | 298 | set_color(nedsim, color); |
b1906d46 AT |
299 | XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc, |
300 | x_origin, y_origin, x_size, y_size | |
301 | ); | |
84b74595 | 302 | |
280460e6 | 303 | // ...then give it a border, if requested. |
7361f6db | 304 | set_color(nedsim, COLOR(border)); |
84b74595 | 305 | if (bord_top) { |
280460e6 | 306 | XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc, |
b1906d46 AT |
307 | x_origin, y_origin, |
308 | x_size, nedsim->border_size | |
309 | ); | |
84b74595 AT |
310 | } |
311 | if (bord_bottom) { | |
280460e6 | 312 | XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc, |
b1906d46 AT |
313 | x_origin, (y_origin + y_size - nedsim->border_size), |
314 | x_size, nedsim->border_size | |
315 | ); | |
84b74595 AT |
316 | } |
317 | if (bord_left) { | |
280460e6 | 318 | XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc, |
b1906d46 AT |
319 | x_origin, y_origin, |
320 | nedsim->border_size, y_size | |
321 | ); | |
84b74595 AT |
322 | } |
323 | if (bord_right) { | |
280460e6 | 324 | XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc, |
b1906d46 AT |
325 | (x_origin + x_size - nedsim->border_size), y_origin, |
326 | nedsim->border_size, y_size | |
327 | ); | |
84b74595 AT |
328 | } |
329 | } | |
330 | ||
280460e6 AT |
331 | // Draws filled circle in a square area with upper left corner at x,y. When |
332 | // specifying the location and size to draw, all values are in units of | |
b1906d46 | 333 | // 'cells'. |
84b74595 AT |
334 | static void |
335 | draw_circular_area(struct NEDsim * nedsim, size_t x, size_t y, double diameter) | |
336 | { | |
337 | // First, convert the function argument units from 'cells' to 'pixels' | |
338 | x *= nedsim->cell_size; | |
339 | y *= nedsim->cell_size; | |
340 | diameter *= nedsim->cell_size; | |
341 | ||
342 | // Add the panel's absolute x,y offset to the requested coordinates. | |
343 | x += nedsim->origin_x_offset; | |
344 | y += nedsim->origin_y_offset; | |
345 | ||
346 | // Shrink the circle to be a bit smaller than the bounding box allows. Note | |
347 | // that the three adjustment values must sum to 1.0. | |
348 | // For example, 0.7 + 0.15 + 0.15 = 1.0. | |
349 | x += (0.15 * diameter); | |
350 | y += (0.15 * diameter); | |
351 | diameter *= 0.7; | |
352 | ||
353 | // Because we only draw the bottom border on repeated rows (e.g. draw_wordline()), | |
354 | // we need to offset vertically by half a border height. | |
355 | y -= (0.5 * nedsim->border_size); | |
356 | ||
357 | // Start angle 0 and ending angle 360*64 is one full circle in Xlib units. | |
839b757b | 358 | XFillArc(nedsim->dpy, nedsim->panel, nedsim->gc, x, y, diameter, diameter, 0, 360*64); |
84b74595 AT |
359 | } |
360 | ||
76081fc3 AT |
361 | // Draws text in a square area with upper left corner at (x_origin,y_origin). |
362 | // Requires that set_font_size() has been run at least once. All values are in | |
363 | // units of 'cells'. | |
364 | static void | |
b1906d46 AT |
365 | draw_text(struct NEDsim * nedsim, const char * text, |
366 | int x_origin, int y_origin, int x_size, int y_size, Bool horizontally_center) | |
76081fc3 | 367 | { |
7361f6db | 368 | set_color(nedsim, COLOR(text)); |
76081fc3 AT |
369 | |
370 | int text_x_size, text_y_size; | |
371 | get_text_size(nedsim, text, &text_x_size, &text_y_size); | |
372 | ||
373 | int local_y_offset = ((y_size * nedsim->cell_size) - text_y_size) / 2; | |
374 | int local_x_offset = 0; | |
375 | if (horizontally_center) local_x_offset = ((x_size * nedsim->cell_size) - text_x_size) / 2; | |
376 | ||
b1906d46 AT |
377 | XDrawString(nedsim->dpy, nedsim->panel, nedsim->gc, |
378 | (x_origin * nedsim->cell_size + nedsim->origin_x_offset + local_x_offset), | |
379 | ((y_origin + y_size) * nedsim->cell_size + nedsim->origin_y_offset - local_y_offset), | |
380 | text, strlen(text) | |
381 | ); | |
382 | } | |
383 | ||
384 | /* -------------------------------------------------------------------------- */ | |
385 | /* Dynamic Panel Functions */ | |
386 | /* -------------------------------------------------------------------------- */ | |
387 | ||
388 | // Draw the 32 lights corresponding to 'word' at coordinates ('x','y'). | |
389 | // Note that this function ONLY draws the lights and is used each frame for | |
390 | // updating the panel. To draw the wordline area itself, use draw_wordline(). | |
391 | static void | |
392 | draw_wordline_lights(struct NEDsim * nedsim, uint32_t word, int x, int y) | |
393 | { | |
394 | for (int i = 0; i < WORDLINE_WIDTH; i++) { | |
395 | if (word & (1<<(WORDLINE_WIDTH-1-i))) { | |
396 | set_color(nedsim, COLOR(light_on)); | |
397 | } else { | |
398 | set_color(nedsim, COLOR(light_off)); | |
399 | } | |
400 | draw_circular_area(nedsim, x+i, y, WORDLINE_HEIGHT); | |
401 | } | |
402 | } | |
403 | ||
404 | // After the static front panel has been drawn at least once, this function | |
405 | // updates all the dynamic parts of the panel (lights + text values) and is | |
406 | // called every frame. | |
407 | static void | |
408 | update_display(struct NEDsim * nedsim) | |
409 | { | |
410 | // Draw the halt indicator. | |
411 | if (nedsim->nedstate->halted) { | |
412 | set_color(nedsim, COLOR(error_on)); | |
413 | } else { | |
414 | set_color(nedsim, COLOR(error_off)); | |
415 | } | |
416 | draw_circular_area(nedsim, HALT_X_OFFSET, HALT_Y_OFFSET, HALT_WIDTH); | |
417 | ||
418 | // Draw the PSW "N" light. | |
419 | if (nedsim->nedstate->active_thread->psw->negative) { | |
420 | set_color(nedsim, COLOR(light_on)); | |
421 | } else { | |
422 | set_color(nedsim, COLOR(light_off)); | |
423 | } | |
424 | draw_circular_area(nedsim, | |
425 | PSW_N_X_OFFSET+1, PSW_Y_OFFSET+PSW_LABEL_HEIGHT, PSW_LIGHT_HEIGHT | |
426 | ); | |
427 | ||
428 | // Draw the PSW "Z" light. | |
429 | if (nedsim->nedstate->active_thread->psw->zero) { | |
430 | set_color(nedsim, COLOR(light_on)); | |
431 | } else { | |
432 | set_color(nedsim, COLOR(light_off)); | |
433 | } | |
434 | draw_circular_area(nedsim, | |
435 | PSW_Z_X_OFFSET+1, PSW_Y_OFFSET+PSW_LABEL_HEIGHT, PSW_LIGHT_HEIGHT | |
436 | ); | |
437 | ||
438 | ||
439 | // Draw the SC. | |
440 | for (int i = 0; i < SC_WIDTH; i++) { | |
441 | if ((SC_WIDTH-1-i) == nedsim->nedstate->active_thread->sc) { | |
442 | set_color(nedsim, COLOR(light_on)); | |
443 | } else { | |
444 | set_color(nedsim, COLOR(light_off)); | |
445 | } | |
446 | draw_circular_area(nedsim, | |
447 | SC_X_OFFSET+i, SC_Y_OFFSET+SC_LABEL_HEIGHT, SC_LIGHT_HEIGHT | |
448 | ); | |
449 | } | |
450 | ||
451 | // Draw the PC. | |
452 | draw_wordline_lights(nedsim, nedsim->nedstate->active_thread->pc, | |
453 | PC_X_OFFSET, PC_Y_OFFSET+PC_LABEL_HEIGHT | |
454 | ); | |
455 | ||
456 | // Draw the stack lights. | |
457 | int64_t top_of_stack = ((int64_t)nedsim->nedstate->active_thread->sp) - 1; | |
458 | for (int i = 0; i < nedsim->num_data_rows; i++) { | |
459 | if ((top_of_stack-i) >= 0) { | |
460 | draw_wordline_lights(nedsim, | |
461 | nedsim->nedstate->active_thread->stack[top_of_stack-i], | |
462 | STACK_X_OFFSET, STACK_Y_OFFSET+STACK_LABEL_HEIGHT+i | |
463 | ); | |
464 | } else { | |
465 | draw_wordline_lights(nedsim, 0, | |
466 | STACK_X_OFFSET, STACK_Y_OFFSET+STACK_LABEL_HEIGHT+i | |
467 | ); | |
468 | } | |
469 | } | |
470 | ||
471 | // Draw the stack size in text. | |
472 | draw_rect_area(nedsim, COLOR(tertiary), | |
473 | STACK_X_OFFSET+(STACK_WIDTH/2), STACK_Y_OFFSET, | |
474 | STACK_WIDTH/2, STACK_LABEL_HEIGHT, | |
475 | True, True, False, False | |
476 | ); | |
477 | char stack_size[11]; | |
478 | snprintf(stack_size, sizeof(stack_size),"0x%08X", nedsim->nedstate->active_thread->sp); | |
479 | draw_text(nedsim, stack_size, | |
480 | (STACK_X_OFFSET+(STACK_WIDTH/2)+1), STACK_Y_OFFSET, | |
481 | STACK_WIDTH, STACK_LABEL_HEIGHT, False | |
482 | ); | |
483 | ||
484 | // Draw the heap lights. | |
485 | for (int i = 0; i < nedsim->num_data_rows; i++) { | |
486 | draw_wordline_lights(nedsim, | |
487 | ram_r_word(nedsim->nedstate, HEAP_START_ADDRESS+(i*BPW)), | |
488 | HEAP_X_OFFSET, HEAP_Y_OFFSET+HEAP_LABEL_HEIGHT+i | |
489 | ); | |
490 | } | |
76081fc3 AT |
491 | } |
492 | ||
b1906d46 AT |
493 | /* -------------------------------------------------------------------------- */ |
494 | /* Static Panel Functions */ | |
495 | /* -------------------------------------------------------------------------- */ | |
496 | ||
280460e6 AT |
497 | // Draws the panel itself. Not the lights/labels/etc, but the flat sheet of |
498 | // metal that is the front panel. | |
84b74595 AT |
499 | static void |
500 | draw_panel(struct NEDsim * nedsim) | |
501 | { | |
b1906d46 AT |
502 | size_t overall_height_in_cells = HEADER_HEIGHT_IN_CELLS + nedsim->num_data_rows + FOOTER_HEIGHT_IN_CELLS; |
503 | ||
84b74595 | 504 | // Draw background color over entire window. |
7361f6db | 505 | set_color(nedsim, COLOR(panel_bg)); |
839b757b | 506 | XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc, 0, 0, nedsim->dpy_width, nedsim->dpy_height); |
84b74595 AT |
507 | |
508 | // Draw NED panel in foreground color. | |
b1906d46 AT |
509 | draw_rect_area(nedsim, COLOR(panel_fg), |
510 | 0, 0, | |
511 | OVERALL_WIDTH_IN_CELLS, overall_height_in_cells, | |
512 | False, False, False, False | |
84b74595 | 513 | ); |
a98a69c1 AT |
514 | |
515 | // Give the panel rounded corners by first deleting the four right-angle corners... | |
b1906d46 AT |
516 | draw_rect_area(nedsim, COLOR(panel_bg), |
517 | 0, 0, | |
518 | 1, 1, | |
519 | False, False, False, False | |
a98a69c1 | 520 | ); |
b1906d46 AT |
521 | draw_rect_area(nedsim, COLOR(panel_bg), |
522 | OVERALL_WIDTH_IN_CELLS-1, 0, | |
523 | 1, 1, | |
524 | False, False, False, False | |
a98a69c1 | 525 | ); |
b1906d46 AT |
526 | draw_rect_area(nedsim, COLOR(panel_bg), |
527 | 0, overall_height_in_cells-1, | |
528 | 1, 1, | |
529 | False, False, False, False | |
a98a69c1 | 530 | ); |
b1906d46 AT |
531 | draw_rect_area(nedsim, COLOR(panel_bg), |
532 | OVERALL_WIDTH_IN_CELLS-1, overall_height_in_cells-1, | |
533 | 1, 1, | |
534 | False, False, False, False | |
a98a69c1 AT |
535 | ); |
536 | // ...and then replacing them with filled arcs, forming rounded corners. | |
b1906d46 AT |
537 | // Note that we use XFillArc() instead of draw_circular_area() since we do |
538 | // not desire any padding. | |
7361f6db | 539 | set_color(nedsim, COLOR(panel_fg)); |
839b757b | 540 | XFillArc(nedsim->dpy, nedsim->panel, nedsim->gc, |
a98a69c1 AT |
541 | nedsim->origin_x_offset, |
542 | nedsim->origin_y_offset, | |
543 | nedsim->cell_size * 2, nedsim->cell_size * 2, | |
544 | 180*64, -90*64 | |
545 | ); | |
839b757b | 546 | XFillArc(nedsim->dpy, nedsim->panel, nedsim->gc, |
a98a69c1 AT |
547 | nedsim->origin_x_offset + (nedsim->cell_size * (OVERALL_WIDTH_IN_CELLS-2)), |
548 | nedsim->origin_y_offset, | |
549 | nedsim->cell_size * 2, nedsim->cell_size * 2, | |
550 | 0, 90*64 | |
551 | ); | |
839b757b | 552 | XFillArc(nedsim->dpy, nedsim->panel, nedsim->gc, |
a98a69c1 | 553 | nedsim->origin_x_offset, |
b1906d46 | 554 | nedsim->origin_y_offset + (nedsim->cell_size * (overall_height_in_cells-2)), |
a98a69c1 AT |
555 | nedsim->cell_size * 2, nedsim->cell_size * 2, |
556 | 180*64, 90*64 | |
557 | ); | |
839b757b | 558 | XFillArc(nedsim->dpy, nedsim->panel, nedsim->gc, |
a98a69c1 | 559 | nedsim->origin_x_offset + (nedsim->cell_size * (OVERALL_WIDTH_IN_CELLS-2)), |
b1906d46 | 560 | nedsim->origin_y_offset + (nedsim->cell_size * (overall_height_in_cells-2)), |
a98a69c1 AT |
561 | nedsim->cell_size * 2, nedsim->cell_size * 2, |
562 | 0, -90*64 | |
563 | ); | |
84b74595 AT |
564 | } |
565 | ||
84b74595 AT |
566 | static void |
567 | draw_logo(struct NEDsim * nedsim) | |
568 | { | |
b1906d46 AT |
569 | draw_rect_area(nedsim, COLOR(primary), |
570 | LOGO_X_OFFSET, LOGO_Y_OFFSET, | |
571 | LOGO_WIDTH, LOGO_NAME_HEIGHT, | |
572 | True, True, False, False | |
573 | ); | |
574 | draw_rect_area(nedsim, COLOR(tertiary), | |
575 | LOGO_X_OFFSET, LOGO_Y_OFFSET+LOGO_NAME_HEIGHT, | |
576 | LOGO_WIDTH, LOGO_WEBSITE_HEIGHT, | |
577 | False, True, False, False | |
578 | ); | |
84b74595 | 579 | set_font_size(nedsim, LOGO_NAME_HEIGHT); |
b1906d46 AT |
580 | draw_text(nedsim, "NED", LOGO_X_OFFSET, LOGO_Y_OFFSET, |
581 | LOGO_WIDTH, LOGO_NAME_HEIGHT, True | |
582 | ); | |
84b74595 | 583 | set_font_size(nedsim, LOGO_WEBSITE_HEIGHT); |
b1906d46 AT |
584 | draw_text(nedsim, "subgeniuskitty.com", LOGO_X_OFFSET, LOGO_Y_OFFSET+LOGO_NAME_HEIGHT, |
585 | LOGO_WIDTH, LOGO_WEBSITE_HEIGHT, True | |
586 | ); | |
84b74595 AT |
587 | } |
588 | ||
84b74595 AT |
589 | static void |
590 | draw_halt(struct NEDsim * nedsim) | |
591 | { | |
b1906d46 AT |
592 | draw_rect_area(nedsim, COLOR(tertiary), |
593 | HALT_X_OFFSET, HALT_Y_OFFSET, | |
594 | HALT_WIDTH, HALT_LIGHT_HEIGHT, | |
595 | True, True, False, False | |
596 | ); | |
597 | draw_rect_area(nedsim, COLOR(secondary), | |
598 | HALT_X_OFFSET, HALT_Y_OFFSET+HALT_LIGHT_HEIGHT, | |
599 | HALT_WIDTH, HALT_LABEL_HEIGHT, | |
600 | False, True, False, False | |
601 | ); | |
602 | draw_text(nedsim, "HALT", HALT_X_OFFSET, HALT_Y_OFFSET+HALT_LIGHT_HEIGHT, | |
603 | HALT_WIDTH, HALT_LABEL_HEIGHT, True | |
604 | ); | |
84b74595 AT |
605 | } |
606 | ||
b1906d46 AT |
607 | // Draw a single 32-bit NED word line at coordinates ('x','y'). To update with |
608 | // a specific value, call draw_wordline_lights() after drawing the wordline | |
609 | // area at least once. | |
84b74595 AT |
610 | static void |
611 | draw_wordline(struct NEDsim * nedsim, int x, int y) | |
612 | { | |
613 | // First, draw a solid box in the primary color over the entire wordline area. | |
b1906d46 AT |
614 | draw_rect_area(nedsim, COLOR(primary), |
615 | x, y, | |
616 | WORDLINE_WIDTH, WORDLINE_HEIGHT, | |
617 | False, True, False, False | |
618 | ); | |
84b74595 AT |
619 | |
620 | // Now, draw stripes in the secondary color. | |
0eb8595f | 621 | for (int i = 0; i < (WORDLINE_WIDTH/(2*WORDLINE_BITS_PER_STRIPE)); i++) { |
b1906d46 AT |
622 | draw_rect_area(nedsim, COLOR(secondary), |
623 | (x+(i*(WORDLINE_WIDTH/WORDLINE_BITS_PER_STRIPE))), y, | |
624 | WORDLINE_BITS_PER_STRIPE, WORDLINE_HEIGHT, | |
625 | False, True, False, False | |
626 | ); | |
84b74595 | 627 | } |
84b74595 AT |
628 | } |
629 | ||
84b74595 AT |
630 | static void |
631 | draw_pc(struct NEDsim * nedsim) | |
632 | { | |
b1906d46 AT |
633 | draw_rect_area(nedsim, COLOR(tertiary), |
634 | PC_X_OFFSET, PC_Y_OFFSET, | |
635 | PC_WIDTH, PC_LABEL_HEIGHT, | |
636 | True, True, False, False | |
637 | ); | |
84b74595 | 638 | draw_wordline(nedsim, PC_X_OFFSET, PC_Y_OFFSET+PC_LABEL_HEIGHT); |
76081fc3 | 639 | draw_text(nedsim, "PC", PC_X_OFFSET, PC_Y_OFFSET, PC_WIDTH, PC_LABEL_HEIGHT, True); |
84b74595 AT |
640 | } |
641 | ||
84b74595 AT |
642 | static void |
643 | draw_sc(struct NEDsim * nedsim) | |
644 | { | |
b1906d46 AT |
645 | draw_rect_area(nedsim, COLOR(secondary), |
646 | SC_X_OFFSET, SC_Y_OFFSET, | |
647 | SC_WIDTH, SC_LABEL_HEIGHT, | |
648 | True, True, False, False | |
649 | ); | |
650 | draw_rect_area(nedsim, COLOR(tertiary), | |
651 | SC_X_OFFSET, SC_Y_OFFSET+SC_LABEL_HEIGHT, | |
652 | SC_WIDTH, SC_LIGHT_HEIGHT, | |
653 | False, True, False, False | |
654 | ); | |
76081fc3 | 655 | draw_text(nedsim, "SC", SC_X_OFFSET, SC_Y_OFFSET, SC_WIDTH, SC_LABEL_HEIGHT, True); |
84b74595 AT |
656 | } |
657 | ||
84b74595 AT |
658 | static void |
659 | draw_psw(struct NEDsim * nedsim) | |
660 | { | |
b1906d46 AT |
661 | draw_rect_area(nedsim, COLOR(secondary), |
662 | PSW_N_X_OFFSET, PSW_Y_OFFSET, | |
663 | PSW_LABEL_WIDTH, PSW_LABEL_HEIGHT, | |
664 | True, True, False, False | |
665 | ); | |
666 | draw_rect_area(nedsim, COLOR(secondary), | |
667 | PSW_Z_X_OFFSET, PSW_Y_OFFSET, | |
668 | PSW_LABEL_WIDTH, PSW_LABEL_HEIGHT, | |
669 | True, True, False, False | |
670 | ); | |
671 | draw_rect_area(nedsim, COLOR(tertiary), | |
672 | (PSW_N_X_OFFSET + 1), PSW_Y_OFFSET+PSW_LABEL_HEIGHT, | |
673 | PSW_LIGHT_WIDTH, PSW_LIGHT_HEIGHT, | |
674 | False, True, False, False | |
675 | ); | |
676 | draw_rect_area(nedsim, COLOR(tertiary), | |
677 | (PSW_Z_X_OFFSET + 1), PSW_Y_OFFSET+PSW_LABEL_HEIGHT, | |
678 | PSW_LIGHT_WIDTH, PSW_LIGHT_HEIGHT, | |
679 | False, True, False, False | |
680 | ); | |
681 | draw_text(nedsim, "N", PSW_N_X_OFFSET, PSW_Y_OFFSET, | |
682 | PSW_LABEL_WIDTH, PSW_LABEL_HEIGHT, True | |
683 | ); | |
684 | draw_text(nedsim, "Z", PSW_Z_X_OFFSET, PSW_Y_OFFSET, | |
685 | PSW_LABEL_WIDTH, PSW_LABEL_HEIGHT, True | |
686 | ); | |
84b74595 AT |
687 | } |
688 | ||
84b74595 AT |
689 | static void |
690 | draw_stack(struct NEDsim * nedsim) | |
691 | { | |
b1906d46 AT |
692 | draw_rect_area(nedsim, COLOR(tertiary), |
693 | STACK_X_OFFSET, STACK_Y_OFFSET, | |
694 | STACK_WIDTH, STACK_LABEL_HEIGHT, | |
695 | True, True, False, False | |
696 | ); | |
84b74595 AT |
697 | for (int i = 0; i < nedsim->num_data_rows; i++) { |
698 | draw_wordline(nedsim, STACK_X_OFFSET, STACK_Y_OFFSET+STACK_LABEL_HEIGHT+i); | |
699 | } | |
b1906d46 AT |
700 | draw_text(nedsim, "Stack Size:", STACK_X_OFFSET+1, STACK_Y_OFFSET, |
701 | STACK_WIDTH, STACK_LABEL_HEIGHT, False | |
702 | ); | |
84b74595 AT |
703 | } |
704 | ||
84b74595 AT |
705 | static void |
706 | draw_heap(struct NEDsim * nedsim) | |
707 | { | |
b1906d46 AT |
708 | draw_rect_area(nedsim, COLOR(tertiary), |
709 | HEAP_X_OFFSET, HEAP_Y_OFFSET, | |
710 | HEAP_WIDTH, HEAP_LABEL_HEIGHT, | |
711 | True, True, False, False | |
712 | ); | |
84b74595 AT |
713 | for (int i = 0; i < nedsim->num_data_rows; i++) { |
714 | draw_wordline(nedsim, HEAP_X_OFFSET, HEAP_Y_OFFSET+HEAP_LABEL_HEIGHT+i); | |
715 | } | |
b1906d46 AT |
716 | draw_text(nedsim, "RAM Base:", HEAP_X_OFFSET+1, HEAP_Y_OFFSET, |
717 | HEAP_WIDTH, HEAP_LABEL_HEIGHT, False | |
718 | ); | |
84b74595 AT |
719 | char address[11]; |
720 | snprintf(address, sizeof(address), "0x%08X", HEAP_START_ADDRESS); | |
b1906d46 AT |
721 | draw_text(nedsim, address, (HEAP_X_OFFSET+(HEAP_WIDTH/2)+1), HEAP_Y_OFFSET, |
722 | HEAP_WIDTH, HEAP_LABEL_HEIGHT, False | |
723 | ); | |
84b74595 AT |
724 | } |
725 | ||
726 | /* -------------------------------------------------------------------------- */ | |
727 | /* Screenhack API Functions */ | |
728 | /* -------------------------------------------------------------------------- */ | |
729 | ||
730 | static Bool | |
731 | NEDsim_event(Display * dpy, Window win, void * closure, XEvent * event) | |
732 | { | |
733 | return False; | |
734 | } | |
735 | ||
736 | static void | |
737 | NEDsim_free(Display * dpy, Window win, void * closure) | |
738 | { | |
84b74595 | 739 | struct NEDsim * nedsim = closure; |
d87b1e06 AT |
740 | |
741 | if (nedsim->nedstate != NULL) { | |
742 | free(nedsim->nedstate->active_thread->psw); | |
743 | free(nedsim->nedstate->active_thread); | |
744 | free(nedsim->nedstate->hack); | |
745 | free(nedsim->nedstate); | |
746 | } | |
747 | ||
84b74595 | 748 | XFreeGC(nedsim->dpy, nedsim->gc); |
839b757b | 749 | XFreePixmap(nedsim->dpy, nedsim->panel); |
84b74595 AT |
750 | free(nedsim); |
751 | } | |
752 | ||
753 | static void * | |
754 | NEDsim_init(Display * dpy, Window win) | |
755 | { | |
b1906d46 | 756 | // Basic Setup --------------------------------------------------------------------------------- |
2c7168ae | 757 | |
84b74595 | 758 | struct NEDsim * nedsim; |
84b74595 AT |
759 | |
760 | nedsim = calloc(1, sizeof(*nedsim)); | |
761 | if (!nedsim) { | |
762 | fprintf(stderr, "ERROR: Failed to calloc() for NEDsim struct in NEDsim_init().\n"); | |
763 | exit(EXIT_FAILURE); | |
764 | } | |
765 | ||
766 | nedsim->dpy = dpy; | |
767 | nedsim->win = win; | |
768 | ||
2c7168ae AT |
769 | XGCValues gcv; |
770 | nedsim->gc = XCreateGC(nedsim->dpy, nedsim->win, GCForeground, &gcv); | |
771 | ||
772 | XWindowAttributes xgwa; | |
84b74595 AT |
773 | XGetWindowAttributes(nedsim->dpy, nedsim->win, &xgwa); |
774 | nedsim->dpy_width = xgwa.width; | |
775 | nedsim->dpy_height = xgwa.height; | |
776 | ||
2c7168ae AT |
777 | nedsim->panel = XCreatePixmap(nedsim->dpy, nedsim->win, nedsim->dpy_width, nedsim->dpy_height, xgwa.depth); |
778 | ||
b1906d46 | 779 | // Process User Requests ----------------------------------------------------------------------- |
2c7168ae | 780 | |
84b74595 AT |
781 | nedsim->delay = get_integer_resource(nedsim->dpy, "delay", "Integer"); |
782 | nedsim->delay *= 1000; /* Turn milliseconds into microseconds. */ | |
783 | ||
2c7168ae AT |
784 | // If the user did not supply a program for execution, randomly select one |
785 | // of the included programs. | |
5923644e AT |
786 | char * input_file = get_string_resource(nedsim->dpy, "binary", "String"); |
787 | if (input_file == NULL) { | |
788 | // TODO: Need to include some default programs and randomly select one to load into RAM. | |
789 | nedsim->nedstate = init_simulator("./test.out"); | |
790 | } else { | |
791 | nedsim->nedstate = init_simulator(input_file); | |
792 | } | |
84b74595 | 793 | |
2c7168ae | 794 | // If the user did not select a color scheme, select one randomly. |
f93fc861 AT |
795 | nedsim->color_index = get_integer_resource(nedsim->dpy, "color", "Integer"); |
796 | if (nedsim->color_index == -1) { | |
797 | nedsim->color_index = random() % sizeof(color_list)/sizeof(color_list[0]); | |
798 | } else if (nedsim->color_index >= sizeof(color_list)/sizeof(color_list[0])) { | |
799 | fprintf(stderr, "WARNING: Color index out of range.\n"); | |
800 | nedsim->color_index = 0; | |
801 | } | |
84b74595 | 802 | |
b1906d46 | 803 | // Scale Panel To Screen ----------------------------------------------------------------------- |
84b74595 | 804 | |
2c7168ae AT |
805 | // We desire to make the panel as wide as possible while also making the |
806 | // cell size an integer pixel size. | |
807 | nedsim->cell_size = nedsim->dpy_width / OVERALL_WIDTH_IN_CELLS; | |
808 | // Cell sizes below about 10 pixels result in unreadable fonts. For now, | |
809 | // we'll use that as our cutoff. It also works well with a 1:10 border:cell | |
810 | // ratio. | |
84b74595 AT |
811 | if (nedsim->cell_size < 10) { |
812 | nedsim->suitable_display = False; | |
813 | return nedsim; | |
814 | } | |
2c7168ae AT |
815 | // Center the panel horizontally. |
816 | nedsim->origin_x_offset = (nedsim->dpy_width - | |
817 | (nedsim->cell_size * OVERALL_WIDTH_IN_CELLS)) / 2; | |
818 | ||
819 | // The stack and heap displays are variable height. Size them to fit the | |
820 | // display window. | |
821 | int available_space_for_data_rows = nedsim->dpy_height - | |
822 | (nedsim->cell_size * (HEADER_HEIGHT_IN_CELLS + FOOTER_HEIGHT_IN_CELLS)); | |
84b74595 | 823 | for (int i = 0; ; i++) { |
37f7b288 AT |
824 | if ((nedsim->cell_size * i) > available_space_for_data_rows) { |
825 | nedsim->num_data_rows = --i; | |
84b74595 AT |
826 | break; |
827 | } | |
828 | } | |
2c7168ae | 829 | // Enforce a minimum vertical size, though '4' is arbitrary. |
84b74595 AT |
830 | if (nedsim->num_data_rows < 4) { |
831 | nedsim->suitable_display = False; | |
832 | return nedsim; | |
833 | } | |
2c7168ae AT |
834 | // Center the panel vertically. |
835 | nedsim->origin_y_offset = (nedsim->dpy_height - | |
836 | (nedsim->cell_size * (HEADER_HEIGHT_IN_CELLS + nedsim->num_data_rows + FOOTER_HEIGHT_IN_CELLS))) / 2; | |
84b74595 AT |
837 | |
838 | // Scale border relative to cell_size in a 1:10 relationship. | |
839 | nedsim->border_size = nedsim->cell_size / 10; | |
840 | ||
b1906d46 | 841 | // Draw Initial Panel -------------------------------------------------------------------------- |
2c7168ae | 842 | |
84b74595 AT |
843 | draw_panel(nedsim); |
844 | draw_logo(nedsim); | |
845 | draw_halt(nedsim); | |
846 | draw_pc(nedsim); | |
847 | draw_sc(nedsim); | |
848 | draw_psw(nedsim); | |
849 | draw_stack(nedsim); | |
850 | draw_heap(nedsim); | |
851 | ||
852 | nedsim->suitable_display = True; | |
853 | ||
854 | return nedsim; | |
855 | } | |
856 | ||
857 | static unsigned long | |
858 | NEDsim_draw(Display * dpy, Window win, void * closure) | |
859 | { | |
860 | struct NEDsim * nedsim = closure; | |
861 | ||
2c7168ae | 862 | // Update the panel display buffer. |
84b74595 AT |
863 | if (nedsim->suitable_display) { |
864 | nedsim->nedstate = run_simulator(nedsim->nedstate); | |
865 | update_display(nedsim); | |
866 | } else { | |
7361f6db | 867 | set_color(nedsim, COLOR(error_on)); |
839b757b | 868 | XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc, 0, 0, nedsim->dpy_width, nedsim->dpy_height); |
84b74595 AT |
869 | } |
870 | ||
2c7168ae | 871 | // Copy panel buffer to display window. |
839b757b AT |
872 | XCopyArea(nedsim->dpy, nedsim->panel, nedsim->win, nedsim->gc, 0, 0, nedsim->dpy_width, nedsim->dpy_height, 0, 0); |
873 | ||
84b74595 AT |
874 | return nedsim->delay; |
875 | } | |
876 | ||
877 | static void | |
878 | NEDsim_reshape(Display * dpy, Window win, void * closure, unsigned int w, unsigned int h) | |
879 | { | |
880 | struct NEDsim * nedsim = closure; | |
2c7168ae AT |
881 | |
882 | // Only re-initialize the display if it changed size. | |
84b74595 AT |
883 | XWindowAttributes xgwa; |
884 | XGetWindowAttributes(nedsim->dpy, nedsim->win, &xgwa); | |
84b74595 | 885 | if (nedsim->dpy_width != xgwa.width || nedsim->dpy_height != xgwa.height) { |
2c7168ae AT |
886 | // Although we are re-initializing the display, we wish to retain the |
887 | // in-progress NED simulation. Thus, we retain the NEDstate pointer. | |
503470d7 AT |
888 | struct NEDstate * original_nedstate = nedsim->nedstate; |
889 | nedsim->nedstate = NULL; | |
890 | NEDsim_free(dpy, win, nedsim); | |
891 | struct NEDsim * new_nedsim = NEDsim_init(dpy, win); | |
892 | new_nedsim->nedstate = original_nedstate; | |
893 | closure = new_nedsim; | |
84b74595 AT |
894 | } |
895 | } | |
896 | ||
897 | static const char * NEDsim_defaults[] = { | |
898 | "*delay: 250", | |
f93fc861 | 899 | "*color: -1", |
84b74595 AT |
900 | 0 |
901 | }; | |
902 | ||
903 | static XrmOptionDescRec NEDsim_options[] = { | |
904 | { "-delay", ".delay", XrmoptionSepArg, 0 }, | |
5923644e | 905 | { "-binary", ".binary", XrmoptionSepArg, 0 }, |
f93fc861 | 906 | { "-color", ".color", XrmoptionSepArg, 0 }, |
84b74595 AT |
907 | { 0, 0, 0, 0 } |
908 | }; | |
909 | ||
910 | XSCREENSAVER_MODULE ("Blinken-lights simulator for NED1 CPU architecture.", NEDsim) |