1 /*
2
3 * Copyright 2016 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9 #include "include/core/SkTypes.h"
10 #include "src/core/SkTHash.h"
11 #include "tools/sk_app/Application.h"
12 #include "tools/sk_app/unix/Window_unix.h"
13 #include "tools/timer/Timer.h"
14
15 using namespace skia_private;
16
main(int argc,char ** argv)17 int main(int argc, char**argv) {
18 XInitThreads();
19 Display* display = XOpenDisplay(nullptr);
20
21 sk_app::Application* app = sk_app::Application::Create(argc, argv, (void*)display);
22
23 // Get the file descriptor for the X display
24 const int x11_fd = ConnectionNumber(display);
25
26 bool done = false;
27 while (!done) {
28 if (0 == XPending(display)) {
29 // Only call select() when we have no events.
30
31 // Create a file description set containing x11_fd
32 fd_set in_fds;
33 FD_ZERO(&in_fds);
34 FD_SET(x11_fd, &in_fds);
35
36 // Set a sleep timer
37 struct timeval tv;
38 tv.tv_usec = 10;
39 tv.tv_sec = 0;
40
41 // Wait for an event on the file descriptor or for timer expiration
42 (void)select(1, &in_fds, nullptr, nullptr, &tv);
43 }
44
45 // Handle all pending XEvents (if any) and flush the input
46 // Only handle a finite number of events before finishing resize and paint..
47 if (int count = XPending(display)) {
48 // collapse any Expose and Resize events.
49 THashSet<sk_app::Window_unix*> pendingWindows;
50 while (count-- && !done) {
51 XEvent event;
52 XNextEvent(display, &event);
53
54 sk_app::Window_unix* win = sk_app::Window_unix::gWindowMap.find(event.xany.window);
55 if (!win) {
56 continue;
57 }
58
59 // paint and resize events get collapsed
60 switch (event.type) {
61 case Expose:
62 win->markPendingPaint();
63 pendingWindows.add(win);
64 break;
65 case ConfigureNotify:
66 win->markPendingResize(event.xconfigurerequest.width,
67 event.xconfigurerequest.height);
68 pendingWindows.add(win);
69 break;
70 default:
71 if (win->handleEvent(event)) {
72 done = true;
73 }
74 break;
75 }
76 }
77 pendingWindows.foreach([](sk_app::Window_unix* win) {
78 win->finishResize();
79 win->finishPaint();
80 });
81 } else {
82 // We are only really "idle" when the timer went off with zero events.
83 app->onIdle();
84 }
85
86 XFlush(display);
87 }
88
89 delete app;
90
91 XCloseDisplay(display);
92
93 return 0;
94 }
95