source: neercs/trunk/src/wm.c @ 4018

Last change on this file since 4018 was 4018, checked in by Pascal Terjan, 8 years ago
  • Do not redraw borders and title when nothing changed
  • Property svn:keywords set to Id
File size: 14.2 KB
Line 
1/*
2 *  neercs        console-based window manager
3 *  Copyright (c) 2006 Sam Hocevar <sam@zoy.org>
4 *                2008 Jean-Yves Lamoureux <jylam@lnxscene.org>
5 *                All Rights Reserved
6 *
7 *  $Id: wm.c 4018 2009-11-23 12:14:36Z pterjan $
8 *
9 *  This program is free software. It comes without any warranty, to
10 *  the extent permitted by applicable law. You can redistribute it
11 *  and/or modify it under the terms of the Do What The Fuck You Want
12 *  To Public License, Version 2, as published by Sam Hocevar. See
13 *  http://sam.zoy.org/wtfpl/COPYING for more details.
14 */
15
16#include "config.h"
17
18#include <stdio.h>
19#include <caca.h>
20#include <caca.h>
21#include <stdlib.h>
22#include <math.h>
23
24#include "neercs.h"
25
26
27void resize_screen(struct screen *s, int w, int h)
28{
29    caca_canvas_t *old, *new;
30
31    if (w == s->w && h == s->h)
32        return;
33    if (w <= 0 || h <= 0)
34        return;
35
36    s->changed = 1;
37
38    s->w = w;
39    s->h = h;
40
41    /*
42     * caca_set_canvas_boundaries() is bugged as hell, so let's resize it by
43     * hands
44     */
45    old = s->cv;
46    new = caca_create_canvas(w, h);
47    caca_blit(new, 0, 0, old, NULL);
48    s->cv = new;
49    caca_gotoxy(new, caca_get_cursor_x(old), caca_get_cursor_y(old));
50    caca_free_canvas(old);
51    set_tty_size(s->fd, w, h);
52
53    s->orig_w = s->w;
54    s->orig_h = s->h;
55    s->orig_x = s->x;
56    s->orig_y = s->y;
57}
58
59void update_windows_props(struct screen_list *screen_list)
60{
61    debug("%s, %d screens, type %d\n", __FUNCTION__, screen_list->count,
62          screen_list->wm_type);
63
64    if (!screen_list->count)
65        return;
66
67    switch (screen_list->wm_type)
68    {
69    case WM_CARD:
70        update_windows_props_cards(screen_list);
71        break;
72    case WM_HSPLIT:
73        update_windows_props_hsplit(screen_list);
74        break;
75    case WM_VSPLIT:
76        update_windows_props_vsplit(screen_list);
77        break;
78    case WM_FULL:
79    default:
80        update_windows_props_full(screen_list);
81        break;
82    }
83}
84
85void update_windows_props_hsplit(struct screen_list *screen_list)
86{
87    int i;
88    int w =
89        (screen_list->width / screen_list->count) -
90        (screen_list->border_size * 2);
91    int h = screen_list->height - (screen_list->border_size * 2);
92
93    for (i = 0; i < screen_list->count; i++)
94    {
95        screen_list->screen[i]->x = (i * w) + screen_list->border_size;
96        screen_list->screen[i]->y = screen_list->border_size;
97        screen_list->screen[i]->visible = 1;
98        if (i != screen_list->count - 1)
99        {
100            resize_screen(screen_list->screen[i], w - 1, h);
101        }
102        else
103        {
104            resize_screen(screen_list->screen[i],
105                          screen_list->width - i * w - 2, h);
106        }
107    }
108}
109
110void update_windows_props_vsplit(struct screen_list *screen_list)
111{
112    int i;
113    int w = screen_list->width - (screen_list->border_size * 2);
114    int h = (screen_list->height) / screen_list->count;
115
116    for (i = 0; i < screen_list->count; i++)
117    {
118        screen_list->screen[i]->x = screen_list->border_size;
119        screen_list->screen[i]->y = (i * h) + (screen_list->border_size);
120        screen_list->screen[i]->visible = 1;
121        if (i != screen_list->count - 1)
122        {
123            resize_screen(screen_list->screen[i], w,
124                          h - (screen_list->border_size * 2));
125        }
126        else
127        {
128            resize_screen(screen_list->screen[i],
129                          w,
130                          screen_list->height - i * h -
131                          (screen_list->border_size * 2));
132        }
133    }
134}
135
136
137void update_windows_props_full(struct screen_list *screen_list)
138{
139    int i;
140    int w = screen_list->width - (screen_list->border_size * 2);
141    int h = screen_list->height - (screen_list->border_size * 2);
142
143    for (i = 0; i < screen_list->count; i++)
144    {
145        screen_list->screen[i]->visible = 0;
146        screen_list->screen[i]->x = screen_list->border_size;
147        screen_list->screen[i]->y = screen_list->border_size;
148
149        resize_screen(screen_list->screen[i], w, h);
150    }
151    screen_list->screen[screen_list->pty]->visible = 1;
152}
153
154
155void update_windows_props_cards(struct screen_list *screen_list)
156{
157    int i;
158    int w = (screen_list->width - screen_list->count * 3) + 1;
159    int h = (screen_list->height - screen_list->count) - 1;
160    int x = 1;
161    int y = screen_list->count;
162
163    for (i = 0; i < screen_list->count; i++)
164    {
165        screen_list->screen[i]->visible = 1;
166        screen_list->screen[i]->x = x;
167        screen_list->screen[i]->y = y;
168
169        resize_screen(screen_list->screen[i], w, h);
170        x += 3;
171        y--;
172    }
173}
174
175/* Window managers refresh */
176
177void wm_refresh(struct screen_list *screen_list)
178{
179    /* FIXME : move set_color to a relevant place */
180    caca_set_color_ansi(screen_list->cv, CACA_LIGHTRED, CACA_BLACK);
181
182    switch (screen_list->wm_type)
183    {
184    case WM_CARD:
185        wm_refresh_card(screen_list);
186        break;
187    case WM_HSPLIT:
188        wm_refresh_hsplit(screen_list);
189        break;
190    case WM_VSPLIT:
191        wm_refresh_hsplit(screen_list);
192        break;
193    case WM_FULL:
194    default:
195        wm_refresh_cube(screen_list);
196        break;
197    }
198}
199
200static void wm_bell(struct screen_list *screen_list)
201{
202    if (screen_list->screen[screen_list->pty]->bell)
203    {
204        caca_set_color_ansi(screen_list->cv, CACA_RED, CACA_BLACK);
205        screen_list->screen[screen_list->pty]->bell = 0;
206        screen_list->in_bell--;
207    }
208    else
209    {
210        caca_set_color_ansi(screen_list->cv, CACA_LIGHTGREEN, CACA_BLACK);
211    }
212}
213
214static void wm_box(struct screen_list *screen_list, int pty)
215{
216    if (!screen_list->screen[screen_list->pty]->changed
217        && !screen_list->changed)
218        return;
219
220    if (!screen_list->border_size)
221        return;
222
223    caca_draw_cp437_box(screen_list->cv,
224                        screen_list->screen[pty]->x - 1,
225                        screen_list->screen[pty]->y - 1,
226                        screen_list->screen[pty]->w + 2,
227                        screen_list->screen[pty]->h + 2);
228
229    if (screen_list->screen[screen_list->pty]->title)
230    {
231        caca_printf(screen_list->cv,
232                    screen_list->screen[pty]->x,
233                    screen_list->screen[pty]->y - 1,
234                    " %.*s ",
235                    screen_list->screen[pty]->w - 3,
236                    screen_list->screen[pty]->title);
237    }
238}
239
240static void wm_blit_current_screen(struct screen_list *screen_list)
241{
242    if (screen_list->screen[screen_list->pty]->changed || screen_list->changed)
243        caca_blit(screen_list->cv,
244                  screen_list->screen[screen_list->pty]->x,
245                  screen_list->screen[screen_list->pty]->y,
246                  screen_list->screen[screen_list->pty]->cv, NULL);
247}
248
249void wm_refresh_card(struct screen_list *screen_list)
250{
251    int i;
252
253    for (i = screen_list->count - 1; i >= 0; i--)
254    {
255        if (i != screen_list->pty && screen_list->screen[i]->visible &&
256            (screen_list->screen[i]->changed || screen_list->changed))
257        {
258            caca_blit(screen_list->cv,
259                      screen_list->screen[i]->x,
260                      screen_list->screen[i]->y,
261                      screen_list->screen[i]->cv, NULL);
262
263            wm_box(screen_list, i);
264        }
265    }
266
267    /* Force 'changed' to force redraw */
268    screen_list->screen[screen_list->pty]->changed = 1;
269    wm_blit_current_screen(screen_list);
270    wm_bell(screen_list);
271    wm_box(screen_list, screen_list->pty);
272}
273
274void wm_refresh_full(struct screen_list *screen_list)
275{
276    wm_blit_current_screen(screen_list);
277    wm_bell(screen_list);
278    wm_box(screen_list, screen_list->pty);
279}
280
281void wm_refresh_vsplit(struct screen_list *screen_list)
282{
283    int i;
284
285    for (i = screen_list->count - 1; i >= 0; i--)
286    {
287        if (i != screen_list->pty && screen_list->screen[i]->visible &&
288            (screen_list->screen[i]->changed || screen_list->changed))
289        {
290            caca_blit(screen_list->cv,
291                      screen_list->screen[i]->x,
292                      screen_list->screen[i]->y,
293                      screen_list->screen[i]->cv, NULL);
294
295            wm_box(screen_list, i);
296        }
297    }
298
299    wm_blit_current_screen(screen_list);
300    wm_bell(screen_list);
301    wm_box(screen_list, screen_list->pty);
302}
303
304void wm_refresh_hsplit(struct screen_list *screen_list)
305{
306    int i;
307
308    for (i = screen_list->count - 1; i >= 0; i--)
309    {
310        if (i != screen_list->pty && screen_list->screen[i]->visible &&
311            (screen_list->screen[i]->changed || screen_list->changed))
312        {
313            caca_blit(screen_list->cv,
314                      screen_list->screen[i]->x,
315                      screen_list->screen[i]->y,
316                      screen_list->screen[i]->cv, NULL);
317
318            wm_box(screen_list, i);
319        }
320    }
321
322    wm_blit_current_screen(screen_list);
323    wm_bell(screen_list);
324    wm_box(screen_list, screen_list->pty);
325}
326
327
328static float
329get_direction(float p1x, float p1y, float p2x, float p2y, float p3x, float p3y)
330{
331    float d1x, d1y, d2x, d2y;
332
333    d1x = p3x - p1x;
334    d1y = p3y - p1y;
335    d2x = p3x - p2x;
336    d2y = p3y - p2y;
337    return (d1x * d2y) - (d1y * d2x);
338}
339
340
341/* 3D Cube. Yeah I know, it's a mess. Just look anywhere else. */
342static void draw_face(caca_canvas_t * cv,
343                      int p1x, int p1y,
344                      int p2x, int p2y,
345                      int p3x, int p3y,
346                      int p4x, int p4y, caca_canvas_t * tex, int color)
347{
348    if (get_direction(p1x, p1y, p2x, p2y, p3x, p3y) >= 0)
349    {
350        int coords[6];
351        float uv[6];
352        coords[0] = p1x;
353        coords[1] = p1y;
354        coords[2] = p2x;
355        coords[3] = p2y;
356        coords[4] = p3x;
357        coords[5] = p3y;
358        uv[0] = 1;
359        uv[1] = 1;
360        uv[2] = 0;
361        uv[3] = 1;
362        uv[4] = 0;
363        uv[5] = 0;
364#if defined HAVE_CACA_TRIANGLE_TEXTURING
365        caca_fill_triangle_textured(cv, coords, tex, uv);
366#endif
367        coords[0] = p1x;
368        coords[1] = p1y;
369        coords[2] = p3x;
370        coords[3] = p3y;
371        coords[4] = p4x;
372        coords[5] = p4y;
373        uv[0] = 1;
374        uv[1] = 1;
375        uv[2] = 0;
376        uv[3] = 0;
377        uv[4] = 1;
378        uv[5] = 0;
379#if defined HAVE_CACA_TRIANGLE_TEXTURING
380        caca_fill_triangle_textured(cv, coords, tex, uv);
381#endif
382        caca_set_color_ansi(cv, color, CACA_BLACK);
383        caca_draw_thin_line(cv, p1x, p1y, p2x, p2y);
384        caca_draw_thin_line(cv, p2x, p2y, p3x, p3y);
385        caca_draw_thin_line(cv, p3x, p3y, p4x, p4y);
386        caca_draw_thin_line(cv, p4x, p4y, p1x, p1y);
387    }
388}
389
390
391void wm_refresh_cube(struct screen_list *screen_list)
392{
393    int i;
394
395    if (!screen_list->cube.in_switch || !screen_list->eyecandy)
396    {
397        wm_refresh_full(screen_list);
398        screen_list->force_refresh = 0;
399    }
400    else
401    {
402        long long unsigned int cur_time = get_us() - screen_list->last_switch;
403
404        if (cur_time >= screen_list->cube.duration || screen_list->count == 1)
405        {
406            screen_list->changed = 1;
407            screen_list->force_refresh = 1;
408            screen_list->cube.in_switch = 0;
409        }
410        else
411        {
412            float cube[12][3] = {
413                {-1, -1, 1},
414                {1, -1, 1},
415                {1, 1, 1},
416                {-1, 1, 1},
417
418                {1, -1, 1},
419                {1, -1, -1},
420                {1, 1, -1},
421                {1, 1, 1},
422
423                {-1, -1, -1},
424                {-1, -1, 1},
425                {-1, 1, 1},
426                {-1, 1, -1},
427            };
428
429            float cube_transformed[12][3];
430            float cube_projected[12][2];
431            float fov = 0.5f;
432            float angle =
433                90.0f * ((float)cur_time / (float)screen_list->cube.duration);
434
435            angle *= (M_PI / 180.0f);
436
437            if (screen_list->cube.side == 1)
438                angle = -angle;
439
440            float sina = sin(angle);
441            float cosa = cos(angle);
442
443            for (i = 0; i < 12; i++)
444            {
445                cube_transformed[i][2] = cube[i][2] * cosa - cube[i][0] * sina;
446                cube_transformed[i][0] = cube[i][2] * sina + cube[i][0] * cosa;
447                cube_transformed[i][1] = cube[i][1];
448
449                cube_transformed[i][2] -= 3;
450
451                cube_projected[i][0] =
452                    cube_transformed[i][0] / (cube_transformed[i][2] * fov);
453                cube_projected[i][1] =
454                    cube_transformed[i][1] / (cube_transformed[i][2] * fov);
455
456                cube_projected[i][0] /= 2.0f;
457                cube_projected[i][1] /= 2.0f;
458                cube_projected[i][0] += 0.5f;
459                cube_projected[i][1] += 0.5f;
460
461                cube_projected[i][0] *= screen_list->width;
462                cube_projected[i][1] *= screen_list->height;
463            }
464
465            caca_set_color_ansi(screen_list->cv, CACA_WHITE, CACA_BLACK);
466            caca_clear_canvas(screen_list->cv);
467
468            caca_canvas_t *first =
469                screen_list->screen[screen_list->prevpty]->cv;
470            caca_canvas_t *second = screen_list->screen[screen_list->pty]->cv;
471
472            draw_face(screen_list->cv,
473                      cube_projected[0][0], cube_projected[0][1],
474                      cube_projected[1][0], cube_projected[1][1],
475                      cube_projected[2][0], cube_projected[2][1],
476                      cube_projected[3][0], cube_projected[3][1],
477                      first, CACA_LIGHTGREEN);
478
479
480            if (screen_list->cube.side)
481            {
482                draw_face(screen_list->cv,
483                          cube_projected[4][0], cube_projected[4][1],
484                          cube_projected[5][0], cube_projected[5][1],
485                          cube_projected[6][0], cube_projected[6][1],
486                          cube_projected[7][0], cube_projected[7][1],
487                          second, CACA_RED);
488            }
489            else
490            {
491                draw_face(screen_list->cv,
492                          cube_projected[8][0], cube_projected[8][1],
493                          cube_projected[9][0], cube_projected[9][1],
494                          cube_projected[10][0], cube_projected[10][1],
495                          cube_projected[11][0], cube_projected[11][1],
496                          second, CACA_RED);
497            }
498
499            screen_list->changed = 1;
500            screen_list->force_refresh = 1;
501            screen_list->cube.in_switch = 1;
502        }
503    }
504}
Note: See TracBrowser for help on using the repository browser.