1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#include <assert.h>
#include <Kernel/Syscall.h>
#include <SharedGraphics/GraphicsBitmap.h>
#include <SharedGraphics/Painter.h>
#include "gui.h"
static void paint(GraphicsBitmap& bitmap, int width, int height);
int main(int argc, char** argv)
{
GUI_WindowParameters wparams;
wparams.rect = { { 100, 100 }, { 120, 120 } };
wparams.background_color = 0xffc0c0;
strcpy(wparams.title, "GUI test app");
int window_id = gui_create_window(&wparams);
if (window_id < 0) {
perror("gui_create_window");
return 1;
}
int fd = open("/dev/gui_events", O_RDONLY);
if (fd < 0) {
perror("open");
return 1;
}
// NOTE: We never release the backing store. This is just a simple app. :^)
GUI_WindowBackingStoreInfo backing;
int rc = gui_get_window_backing_store(window_id, &backing);
if (rc < 0) {
perror("gui_get_window_backing_store");
return 1;
}
auto bitmap = GraphicsBitmap::create_wrapper(backing.size, backing.pixels);
dbgprintf("(Client) window backing %ux%u @ %p\n", backing.size.width, backing.size.height, backing.pixels);
paint(*bitmap, backing.size.width, backing.size.height);
rc = gui_invalidate_window(window_id, nullptr);
if (rc < 0) {
perror("gui_invalidate_window");
return 1;
}
for (;;) {
GUI_Event event;
ssize_t nread = read(fd, &event, sizeof(event));
if (nread < 0) {
perror("read");
return 1;
}
dbgprintf("(%d) ", getpid());
assert(nread == sizeof(event));
switch (event.type) {
case GUI_Event::Type::Paint: dbgprintf("WID=%x Paint [%d,%d %dx%d]\n", event.window_id, event.paint.rect.location.x, event.paint.rect.location.y, event.paint.rect.size.width, event.paint.rect.size.height); break;
case GUI_Event::Type::MouseDown: dbgprintf("WID=%x MouseDown %d,%d\n", event.window_id, event.mouse.position.x, event.mouse.position.y); break;
case GUI_Event::Type::MouseUp: dbgprintf("WID=%x MouseUp %d,%d\n", event.window_id, event.mouse.position.x, event.mouse.position.y); break;
case GUI_Event::Type::MouseMove: dbgprintf("WID=%x MouseMove %d,%d\n", event.window_id, event.mouse.position.x, event.mouse.position.y); break;
case GUI_Event::Type::WindowActivated: dbgprintf("WID=%x WindowActivated\n", event.window_id); break;
case GUI_Event::Type::WindowDeactivated: dbgprintf("WID=%x WindowDeactivated\n", event.window_id); break;
}
if (event.type == GUI_Event::Type::MouseDown) {
paint(*bitmap, backing.size.width, backing.size.height);
gui_invalidate_window(window_id, nullptr);
}
}
return 0;
}
void paint(GraphicsBitmap& bitmap, int width, int height)
{
byte r = rand() % 255;
byte g = rand() % 255;
byte b = rand() % 255;
Color color(r, g, b);
Painter painter(bitmap);
painter.fill_rect({0, 0, width, height}, color);
painter.draw_text({0, 0, width, height}, "Hello World!", Painter::TextAlignment::Center, Color::Black);
}
|
