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w32_common: prevent decoding certain keys twice 

This is a bit of a hack, but in order to prevent TranslateMessage from
seeing WM_KEYDOWN messages that we already know how to decode, move the
decoding logic to the event loop. This should fix #476, since it stops
the generation of extraneous WM_CHAR messages that were triggering more
than one action on keydown.
This commit is contained in:
James Ross-Gowan 2014-01-14 22:27:42 +11:00 committed by wm4
parent 8255400e9c
commit 4276e9443d
1 changed files with 34 additions and 12 deletions
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46
video/out/w32_common.c
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@ -39,6 +39,10 @@
static const wchar_t classname[] = L"mpv";
enum mp_messages {
MPM_PUTKEY = WM_USER,
};
static const struct mp_keymap vk_map[] = {
// special keys
{VK_ESCAPE, MP_KEY_ESC}, {VK_BACK, MP_KEY_BS}, {VK_TAB, MP_KEY_TAB},
@ -381,15 +385,13 @@ static LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam,
break;
}
break;
case WM_KEYDOWN:
case WM_SYSKEYDOWN: {
int mpkey = lookup_keymap_table(vk_map, wParam);
if (mpkey)
mp_input_put_key(vo->input_ctx, mpkey | mod_state(vo));
case MPM_PUTKEY:
mp_input_put_key(vo->input_ctx, wParam | mod_state(vo));
break;
case WM_SYSKEYDOWN:
if (wParam == VK_F10)
return 0;
break;
}
case WM_CHAR:
case WM_SYSCHAR: {
int mods = mod_state(vo);
@ -401,11 +403,7 @@ static LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam,
mods &= ~(MP_KEY_MODIFIER_CTRL | MP_KEY_MODIFIER_ALT);
// Apparently Ctrl+A to Ctrl+Z is special cased, and produces
// character codes from 1-26. Work it around.
// Also, enter/return (including the keypad variant) and CTRL+J both
// map to wParam==10. As a workaround, check VK_RETURN to
// distinguish these two key combinations.
if ((mods & MP_KEY_MODIFIER_CTRL) && code >= 1 && code <= 26
&& !key_state(vo, VK_RETURN))
if ((mods & MP_KEY_MODIFIER_CTRL) && code >= 1 && code <= 26)
code = code - 1 + (mods & MP_KEY_MODIFIER_SHIFT ? 'A' : 'a');
if (code >= 32 && code < (1<<21)) {
mp_input_put_key(vo->input_ctx, code | mods);
@ -496,6 +494,24 @@ static LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam,
return DefWindowProcW(hWnd, message, wParam, lParam);
}
static bool translate_key_input(MSG *msg)
{
if (msg->message != WM_KEYDOWN && msg->message != WM_SYSKEYDOWN &&
msg->message != WM_KEYUP && msg->message != WM_SYSKEYUP)
return false;
int mpkey = lookup_keymap_table(vk_map, msg->wParam);
if (mpkey) {
if (msg->message == WM_KEYDOWN || msg->message == WM_SYSKEYDOWN)
SendMessageW(msg->hwnd, MPM_PUTKEY, mpkey, 0);
return true;
}
return false;
}
/**
* \brief Dispatch incoming window events and handle them.
*
@ -516,7 +532,13 @@ int vo_w32_check_events(struct vo *vo)
w32->event_flags = 0;
while (PeekMessageW(&msg, 0, 0, 0, PM_REMOVE)) {
TranslateMessage(&msg);
// Decode key messages and synthesize MPM_PUTKEY for keys in the
// keymap table
if (!translate_key_input(&msg)) {
// TranslateMessage only needs to generate WM_CHAR for keys that
// haven't already been decoded
TranslateMessage(&msg);
}
DispatchMessageW(&msg);
}