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Use Allegro callbacks to generate key up/down events

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This commit is contained in:
David Capello 2015-08-12 13:33:04 -03:00
parent 6b9c4c53ae
commit 61879652cf
1 changed files with 43 additions and 66 deletions
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109
src/she/alleg4/key_poller.cpp
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@ -8,88 +8,65 @@
#include "config.h"
#endif
#include "she/alleg4/alleg_display.h"
#include "she/she.h"
#include <allegro.h>
namespace she {
namespace {
static char old_readed_key[KEY_MAX]; // keyboard status of previous poll
static unsigned key_repeated[KEY_MAX];
int key_repeated[KEY_MAX];
int she_keyboard_ucallback(int unicode_char, int* scancode)
{
int c = ((*scancode) & 0x7f);
Event ev;
ev.setType(Event::KeyDown);
ev.setScancode(static_cast<KeyScancode>(c));
if (unicode_char)
ev.setUnicodeChar(unicode_char);
else
ev.setUnicodeChar(::scancode_to_ascii(c));
ev.setRepeat(key_repeated[c]++);
queue_event(ev);
return unicode_char;
}
void she_keyboard_lowlevel_callback(int scancode)
{
// Bit 0x80 indicates that it is a key release.
if (!(scancode & 0x80))
return;
scancode ^= 0x80;
key_repeated[scancode] = 0;
Event ev;
ev.setType(Event::KeyUp);
ev.setScancode(static_cast<KeyScancode>(scancode));
ev.setUnicodeChar(::scancode_to_ascii(scancode));
ev.setRepeat(0);
queue_event(ev);
}
}
namespace she {
void key_poller_init()
{
// Reset keyboard
for (int c=0; c<KEY_MAX; c++) {
old_readed_key[c] = 0;
for (int c=0; c<KEY_MAX; c++)
key_repeated[c] = 0;
}
keyboard_ucallback = she_keyboard_ucallback;
keyboard_lowlevel_callback = she_keyboard_lowlevel_callback;
}
void key_poller_generate_events()
{
Event ev;
// Poll keyboard
poll_keyboard();
// Generate kKeyDownMessage messages.
int c;
while (keypressed()) {
int scancode;
int unicode_char = ureadkey(&scancode);
int repeat = 0;
{
c = scancode;
if (c >= 0 && c < KEY_MAX) {
old_readed_key[c] = key[c];
repeat = key_repeated[c]++;
}
}
ev.setType(Event::KeyDown);
ev.setScancode(static_cast<KeyScancode>(scancode));
if (unicode_char != 0)
ev.setUnicodeChar(unicode_char);
else
ev.setUnicodeChar(::scancode_to_ascii(scancode));
ev.setRepeat(repeat);
queue_event(ev);
}
for (int c=0; c<KEY_MAX; c++) {
if (old_readed_key[c] != key[c]) {
KeyScancode scancode = static_cast<KeyScancode>(c);
// Generate kKeyUpMessage messages (old key state is activated,
// the new one is deactivated).
if (old_readed_key[c]) {
ev.setType(Event::KeyUp);
ev.setScancode(scancode);
ev.setUnicodeChar(::scancode_to_ascii(scancode));
ev.setRepeat(0);
queue_event(ev);
old_readed_key[c] = key[c];
key_repeated[c] = 0;
}
// Generate kKeyDownMessage messages for modifiers
else if (c >= kKeyFirstModifierScancode || c == kKeyCommand) {
ev.setType(Event::KeyDown);
ev.setScancode(scancode);
ev.setUnicodeChar(::scancode_to_ascii(scancode));
ev.setRepeat(key_repeated[c]++);
queue_event(ev);
old_readed_key[c] = key[c];
}
}
}
// Just ignore the whole keyboard buffer (we use callbacks).
clear_keybuf();
}
} // namespace she