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