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mpv/video/out/w32_common.c
James Ross-Gowan 3bcb4b8a9e w32_common: prevent MOUSE_BTN0 sticking after drag 
The window doesn't recieve a WM_LBUTTONUP message after it's dragged,
probably because it's swallowed by the modal loop. To stop the button
from sticking, release it manually when the drag is complete.
2014-03-12 14:51:25 +01:00

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/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <limits.h>
#include <assert.h>
#include <windows.h>
#include <windowsx.h>
#include <ole2.h>
#include "options/options.h"
#include "input/keycodes.h"
#include "input/input.h"
#include "input/event.h"
#include "common/msg.h"
#include "common/common.h"
#include "vo.h"
#include "aspect.h"
#include "w32_common.h"
#include "osdep/io.h"
#include "osdep/w32_keyboard.h"
#include "talloc.h"
#define WIN_ID_TO_HWND(x) ((HWND)(intptr_t)(x))
static const wchar_t classname[] = L"mpv";
enum mp_messages {
MPM_PUTKEY = WM_USER,
};
typedef struct tagDropTarget {
IDropTarget iface;
ULONG refCnt;
DWORD lastEffect;
IDataObject* dataObj;
struct vo *vo;
} DropTarget;
static FORMATETC fmtetc_file = { CF_HDROP, 0, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
static FORMATETC fmtetc_url = { 0, NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
static void DropTarget_Destroy(DropTarget* This)
{
if (This->dataObj != NULL) {
This->dataObj->lpVtbl->Release(This->dataObj);
This->dataObj->lpVtbl = NULL;
}
talloc_free(This);
}
static HRESULT STDMETHODCALLTYPE DropTarget_QueryInterface(IDropTarget* This,
REFIID riid,
void** ppvObject)
{
if (!IsEqualGUID(riid, &IID_IUnknown) ||
!IsEqualGUID(riid, &IID_IDataObject)) {
*ppvObject = NULL;
return E_NOINTERFACE;
}
*ppvObject = This;
This->lpVtbl->AddRef(This);
return S_OK;
}
static ULONG STDMETHODCALLTYPE DropTarget_AddRef(IDropTarget* This)
{
DropTarget* t = (DropTarget*)This;
return ++(t->refCnt);
}
static ULONG STDMETHODCALLTYPE DropTarget_Release(IDropTarget* This)
{
DropTarget* t = (DropTarget*)This;
ULONG cRef = --(t->refCnt);
if (cRef == 0) {
DropTarget_Destroy(t);
}
return cRef;
}
static HRESULT STDMETHODCALLTYPE DropTarget_DragEnter(IDropTarget* This,
IDataObject* pDataObj,
DWORD grfKeyState,
POINTL pt,
DWORD* pdwEffect)
{
DropTarget* t = (DropTarget*)This;
pDataObj->lpVtbl->AddRef(pDataObj);
if (pDataObj->lpVtbl->QueryGetData(pDataObj, &fmtetc_file) != S_OK &&
pDataObj->lpVtbl->QueryGetData(pDataObj, &fmtetc_url) != S_OK) {
*pdwEffect = DROPEFFECT_NONE;
}
if (t->dataObj != NULL) {
t->dataObj->lpVtbl->Release(t->dataObj);
}
t->dataObj = pDataObj;
t->lastEffect = *pdwEffect;
return S_OK;
}
static HRESULT STDMETHODCALLTYPE DropTarget_DragOver(IDropTarget* This,
DWORD grfKeyState,
POINTL pt,
DWORD* pdwEffect)
{
DropTarget* t = (DropTarget*)This;
*pdwEffect = t->lastEffect;
return S_OK;
}
static HRESULT STDMETHODCALLTYPE DropTarget_DragLeave(IDropTarget* This)
{
DropTarget* t = (DropTarget*)This;
if (t->dataObj != NULL) {
t->dataObj->lpVtbl->Release(t->dataObj);
t->dataObj = NULL;
}
return S_OK;
}
static HRESULT STDMETHODCALLTYPE DropTarget_Drop(IDropTarget* This,
IDataObject* pDataObj,
DWORD grfKeyState, POINTL pt,
DWORD* pdwEffect)
{
DropTarget* t = (DropTarget*)This;
STGMEDIUM medium;
if (t->dataObj != NULL) {
t->dataObj->lpVtbl->Release(t->dataObj);
t->dataObj = NULL;
}
pDataObj->lpVtbl->AddRef(pDataObj);
if (pDataObj->lpVtbl->GetData(pDataObj, &fmtetc_file, &medium) == S_OK) {
if (GlobalLock(medium.hGlobal) != NULL) {
HDROP hDrop = (HDROP)medium.hGlobal;
UINT numFiles = DragQueryFileW(hDrop, 0xFFFFFFFF, NULL, 0);
char** files = talloc_zero_array(NULL, char*, numFiles);
UINT nrecvd_files = 0;
for (UINT i = 0; i < numFiles; i++) {
UINT len = DragQueryFileW(hDrop, i, NULL, 0);
wchar_t* buf = talloc_array(NULL, wchar_t, len + 1);
if (DragQueryFileW(hDrop, i, buf, len + 1) == len) {
char* fname = mp_to_utf8(files, buf);
files[nrecvd_files++] = fname;
MP_VERBOSE(t->vo, "win32: received dropped file: %s\n",
fname);
} else {
MP_ERR(t->vo, "win32: error getting dropped file name\n");
}
talloc_free(buf);
}
GlobalUnlock(medium.hGlobal);
mp_event_drop_files(t->vo->input_ctx, nrecvd_files, files);
talloc_free(files);
}
ReleaseStgMedium(&medium);
} else if (pDataObj->lpVtbl->GetData(pDataObj,
&fmtetc_url, &medium) == S_OK) {
// get the URL encoded in US-ASCII
char* url = (char*)GlobalLock(medium.hGlobal);
if (url != NULL) {
if (mp_event_drop_mime_data(t->vo->input_ctx, "text/uri-list",
bstr0(url)) > 0) {
MP_VERBOSE(t->vo, "win32: received dropped URL: %s\n", url);
} else {
MP_ERR(t->vo, "win32: error getting dropped URL\n");
}
GlobalUnlock(medium.hGlobal);
}
ReleaseStgMedium(&medium);
}
else {
t->lastEffect = DROPEFFECT_NONE;
}
pDataObj->lpVtbl->Release(pDataObj);
*pdwEffect = t->lastEffect;
return S_OK;
}
static void DropTarget_Init(DropTarget* This, struct vo *vo)
{
IDropTargetVtbl* vtbl = talloc(This, IDropTargetVtbl);
*vtbl = (IDropTargetVtbl){
DropTarget_QueryInterface, DropTarget_AddRef, DropTarget_Release,
DropTarget_DragEnter, DropTarget_DragOver, DropTarget_DragLeave,
DropTarget_Drop
};
This->iface.lpVtbl = vtbl;
This->refCnt = 0;
This->lastEffect = 0;
This->dataObj = NULL;
This->vo = vo;
}
static void add_window_borders(HWND hwnd, RECT *rc)
{
AdjustWindowRect(rc, GetWindowLong(hwnd, GWL_STYLE), 0);
}
// basically a reverse AdjustWindowRect (win32 doesn't appear to have this)
static void subtract_window_borders(HWND hwnd, RECT *rc)
{
RECT b = { 0, 0, 0, 0 };
add_window_borders(hwnd, &b);
rc->left -= b.left;
rc->top -= b.top;
rc->right -= b.right;
rc->bottom -= b.bottom;
}
// turn a WMSZ_* input value in v into the border that should be resized
// returns: 0=left, 1=top, 2=right, 3=bottom, -1=undefined
static int get_resize_border(int v)
{
switch (v) {
case WMSZ_LEFT: return 3;
case WMSZ_TOP: return 2;
case WMSZ_RIGHT: return 3;
case WMSZ_BOTTOM: return 2;
case WMSZ_TOPLEFT: return 1;
case WMSZ_TOPRIGHT: return 1;
case WMSZ_BOTTOMLEFT: return 3;
case WMSZ_BOTTOMRIGHT: return 3;
default: return -1;
}
}
static bool key_state(struct vo *vo, int vk)
{
return GetKeyState(vk) & 0x8000;
}
static int mod_state(struct vo *vo)
{
int res = 0;
if (key_state(vo, VK_CONTROL))
res |= MP_KEY_MODIFIER_CTRL;
if (key_state(vo, VK_SHIFT))
res |= MP_KEY_MODIFIER_SHIFT;
if (key_state(vo, VK_MENU))
res |= MP_KEY_MODIFIER_ALT;
return res;
}
static LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam,
LPARAM lParam)
{
if (message == WM_NCCREATE) {
CREATESTRUCT *cs = (void*)lParam;
SetWindowLongPtrW(hWnd, GWLP_USERDATA, (LONG_PTR)cs->lpCreateParams);
}
struct vo *vo = (void*)GetWindowLongPtrW(hWnd, GWLP_USERDATA);
// message before WM_NCCREATE, pray to Raymond Chen that it's not important
if (!vo)
return DefWindowProcW(hWnd, message, wParam, lParam);
struct vo_w32_state *w32 = vo->w32;
int mouse_button = 0;
switch (message) {
case WM_ERASEBKGND: // no need to erase background seperately
return 1;
case WM_PAINT:
w32->event_flags |= VO_EVENT_EXPOSE;
break;
case WM_MOVE: {
POINT p = {0};
ClientToScreen(w32->window, &p);
w32->window_x = p.x;
w32->window_y = p.y;
MP_VERBOSE(vo, "move window: %d:%d\n",
w32->window_x, w32->window_y);
break;
}
case WM_SIZE: {
w32->event_flags |= VO_EVENT_RESIZE;
RECT r;
GetClientRect(w32->window, &r);
vo->dwidth = r.right;
vo->dheight = r.bottom;
MP_VERBOSE(vo, "resize window: %d:%d\n",
vo->dwidth, vo->dheight);
break;
}
case WM_SIZING:
if (vo->opts->keepaspect && !vo->opts->fullscreen &&
vo->opts->WinID < 0)
{
RECT *rc = (RECT*)lParam;
// get client area of the windows if it had the rect rc
// (subtracting the window borders)
RECT r = *rc;
subtract_window_borders(w32->window, &r);
int c_w = r.right - r.left, c_h = r.bottom - r.top;
float aspect = w32->o_dwidth / (float) MPMAX(w32->o_dheight, 1);
int d_w = c_h * aspect - c_w;
int d_h = c_w / aspect - c_h;
int d_corners[4] = { d_w, d_h, -d_w, -d_h };
int corners[4] = { rc->left, rc->top, rc->right, rc->bottom };
int corner = get_resize_border(wParam);
if (corner >= 0)
corners[corner] -= d_corners[corner];
*rc = (RECT) { corners[0], corners[1], corners[2], corners[3] };
return TRUE;
}
break;
case WM_CLOSE:
mp_input_put_key(vo->input_ctx, MP_KEY_CLOSE_WIN);
break;
case WM_SYSCOMMAND:
switch (wParam) {
case SC_SCREENSAVE:
case SC_MONITORPOWER:
if (w32->disable_screensaver) {
MP_VERBOSE(vo, "win32: killing screensaver\n");
return 0;
}
break;
}
break;
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);
int code = wParam;
// Windows enables Ctrl+Alt when AltGr (VK_RMENU) is pressed.
// E.g. AltGr+9 on a German keyboard would yield Ctrl+Alt+[
// Warning: wine handles this differently. Don't test this on wine!
if (key_state(vo, VK_RMENU) && mp_input_use_alt_gr(vo->input_ctx))
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.
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);
// At least with Alt+char, not calling DefWindowProcW stops
// Windows from emitting a beep.
return 0;
}
break;
}
case WM_SETCURSOR:
if (LOWORD(lParam) == HTCLIENT && !w32->cursor_visible) {
SetCursor(NULL);
return TRUE;
}
break;
case WM_MOUSELEAVE:
w32->tracking = FALSE;
mp_input_put_key(vo->input_ctx, MP_KEY_MOUSE_LEAVE);
break;
case WM_MOUSEMOVE: {
if (!w32->tracking)
w32->tracking = TrackMouseEvent(&w32->trackEvent);
// Windows can send spurious mouse events, which would make the mpv
// core unhide the mouse cursor on completely unrelated events. See:
// https://blogs.msdn.com/b/oldnewthing/archive/2003/10/01/55108.aspx
int x = GET_X_LPARAM(lParam);
int y = GET_Y_LPARAM(lParam);
if (x != w32->mouse_x || y != w32->mouse_y) {
w32->mouse_x = x;
w32->mouse_y = y;
vo_mouse_movement(vo, x, y);
}
break;
}
case WM_LBUTTONDOWN:
mouse_button = MP_MOUSE_BTN0 | MP_KEY_STATE_DOWN;
break;
case WM_LBUTTONUP:
mouse_button = MP_MOUSE_BTN0 | MP_KEY_STATE_UP;
break;
case WM_MBUTTONDOWN:
mouse_button = MP_MOUSE_BTN1 | MP_KEY_STATE_DOWN;
break;
case WM_MBUTTONUP:
mouse_button = MP_MOUSE_BTN1 | MP_KEY_STATE_UP;
break;
case WM_RBUTTONDOWN:
mouse_button = MP_MOUSE_BTN2 | MP_KEY_STATE_DOWN;
break;
case WM_RBUTTONUP:
mouse_button = MP_MOUSE_BTN2 | MP_KEY_STATE_UP;
break;
case WM_MOUSEWHEEL: {
int x = GET_WHEEL_DELTA_WPARAM(wParam);
mouse_button = x > 0 ? MP_MOUSE_BTN3 : MP_MOUSE_BTN4;
break;
}
case WM_XBUTTONDOWN:
mouse_button = HIWORD(wParam) == 1 ? MP_MOUSE_BTN5 : MP_MOUSE_BTN6;
mouse_button |= MP_KEY_STATE_DOWN;
break;
case WM_XBUTTONUP:
mouse_button = HIWORD(wParam) == 1 ? MP_MOUSE_BTN5 : MP_MOUSE_BTN6;
mouse_button |= MP_KEY_STATE_UP;
break;
}
if (mouse_button) {
mouse_button |= mod_state(vo);
mp_input_put_key(vo->input_ctx, mouse_button);
if (vo->opts->enable_mouse_movements) {
int x = GET_X_LPARAM(lParam);
int y = GET_Y_LPARAM(lParam);
if (mouse_button == (MP_MOUSE_BTN0 | MP_KEY_STATE_DOWN) &&
!vo->opts->fullscreen &&
!mp_input_test_dragging(vo->input_ctx, x, y))
{
// Window dragging hack
ReleaseCapture();
SendMessage(hWnd, WM_NCLBUTTONDOWN, HTCAPTION, 0);
mp_input_put_key(vo->input_ctx, MP_MOUSE_BTN0 |
MP_KEY_STATE_UP);
return 0;
}
}
if (mouse_button & MP_KEY_STATE_DOWN)
SetCapture(w32->window);
else
ReleaseCapture();
}
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;
bool ext = HIWORD(msg->lParam) & KF_EXTENDED;
int mpkey = mp_w32_vkey_to_mpkey(msg->wParam, ext);
// If we don't want the key, return false so TranslateMessage can convert
// it to Unicode
if (!mpkey)
return false;
if (msg->message == WM_KEYDOWN || msg->message == WM_SYSKEYDOWN)
SendMessageW(msg->hwnd, MPM_PUTKEY, mpkey, 0);
return true;
}
/**
* \brief Dispatch incoming window events and handle them.
*
* This function should be placed inside libvo's function "check_events".
*
* \return int with these flags possibly set, take care to handle in the right order
* if it matters in your driver:
*
* VO_EVENT_RESIZE = The window was resized. If necessary reinit your
* driver render context accordingly.
* VO_EVENT_EXPOSE = The window was exposed. Call e.g. flip_frame() to redraw
* the window if the movie is paused.
*/
int vo_w32_check_events(struct vo *vo)
{
struct vo_w32_state *w32 = vo->w32;
MSG msg;
w32->event_flags = 0;
while (PeekMessageW(&msg, 0, 0, 0, PM_REMOVE)) {
// 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);
}
if (vo->opts->WinID >= 0) {
BOOL res;
RECT r;
POINT p;
res = GetClientRect(w32->window, &r);
if (res && (r.right != vo->dwidth || r.bottom != vo->dheight)) {
vo->dwidth = r.right; vo->dheight = r.bottom;
w32->event_flags |= VO_EVENT_RESIZE;
}
p.x = 0; p.y = 0;
ClientToScreen(w32->window, &p);
if (p.x != w32->window_x || p.y != w32->window_y) {
w32->window_x = p.x; w32->window_y = p.y;
}
res = GetClientRect(WIN_ID_TO_HWND(vo->opts->WinID), &r);
if (res && (r.right != vo->dwidth || r.bottom != vo->dheight))
MoveWindow(w32->window, 0, 0, r.right, r.bottom, FALSE);
if (!IsWindow(WIN_ID_TO_HWND(vo->opts->WinID))) {
// Window has probably been closed, e.g. due to program crash
mp_input_put_key(vo->input_ctx, MP_KEY_CLOSE_WIN);
}
}
return w32->event_flags;
}
static BOOL CALLBACK mon_enum(HMONITOR hmon, HDC hdc, LPRECT r, LPARAM p)
{
struct vo *vo = (void*)p;
struct vo_w32_state *w32 = vo->w32;
// this defaults to the last screen if specified number does not exist
vo->xinerama_x = r->left;
vo->xinerama_y = r->top;
vo->opts->screenwidth = r->right - r->left;
vo->opts->screenheight = r->bottom - r->top;
if (w32->mon_cnt == w32->mon_id)
return FALSE;
w32->mon_cnt++;
return TRUE;
}
/**
* \brief Update screen information.
*
* This function should be called in libvo's "control" callback
* with parameter VOCTRL_UPDATE_SCREENINFO.
* Note that this also enables the new API where geometry and aspect
* calculations are done in video_out.c:config_video_out
*
* Global libvo variables changed:
* xinerama_x
* xinerama_y
* vo_screenwidth
* vo_screenheight
*/
static void w32_update_xinerama_info(struct vo *vo)
{
struct vo_w32_state *w32 = vo->w32;
struct mp_vo_opts *opts = vo->opts;
int screen = opts->fullscreen ? opts->fsscreen_id : opts->screen_id;
vo->xinerama_x = vo->xinerama_y = 0;
if (opts->fullscreen && screen == -2) {
int tmp;
vo->xinerama_x = GetSystemMetrics(SM_XVIRTUALSCREEN);
vo->xinerama_y = GetSystemMetrics(SM_YVIRTUALSCREEN);
tmp = GetSystemMetrics(SM_CXVIRTUALSCREEN);
if (tmp)
vo->opts->screenwidth = tmp;
tmp = GetSystemMetrics(SM_CYVIRTUALSCREEN);
if (tmp)
vo->opts->screenheight = tmp;
} else if (screen == -1) {
MONITORINFO mi;
HMONITOR m = MonitorFromWindow(w32->window, MONITOR_DEFAULTTOPRIMARY);
mi.cbSize = sizeof(mi);
GetMonitorInfoW(m, &mi);
vo->xinerama_x = mi.rcMonitor.left;
vo->xinerama_y = mi.rcMonitor.top;
vo->opts->screenwidth = mi.rcMonitor.right - mi.rcMonitor.left;
vo->opts->screenheight = mi.rcMonitor.bottom - mi.rcMonitor.top;
} else if (screen >= 0) {
w32->mon_cnt = 0;
w32->mon_id = screen;
EnumDisplayMonitors(NULL, NULL, mon_enum, (LONG_PTR)vo);
}
}
static void updateScreenProperties(struct vo *vo)
{
DEVMODE dm;
dm.dmSize = sizeof dm;
dm.dmDriverExtra = 0;
dm.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
if (!EnumDisplaySettings(0, ENUM_CURRENT_SETTINGS, &dm)) {
MP_ERR(vo, "win32: unable to enumerate display settings!\n");
return;
}
vo->opts->screenwidth = dm.dmPelsWidth;
vo->opts->screenheight = dm.dmPelsHeight;
w32_update_xinerama_info(vo);
}
static DWORD update_style(struct vo *vo, DWORD style)
{
const DWORD NO_FRAME = WS_POPUP;
const DWORD FRAME = WS_OVERLAPPEDWINDOW | WS_SIZEBOX;
style &= ~(NO_FRAME | FRAME);
style |= (vo->opts->border && !vo->opts->fullscreen) ? FRAME : NO_FRAME;
return style;
}
// Update the window title, position, size, and border style from vo_* values.
static int reinit_window_state(struct vo *vo)
{
struct vo_w32_state *w32 = vo->w32;
HWND layer = HWND_NOTOPMOST;
RECT r;
if (vo->opts->WinID >= 0)
return 1;
bool toggle_fs = w32->current_fs != vo->opts->fullscreen;
w32->current_fs = vo->opts->fullscreen;
DWORD style = update_style(vo, GetWindowLong(w32->window, GWL_STYLE));
if (vo->opts->ontop)
layer = HWND_TOPMOST;
// xxx not sure if this can trigger any unwanted messages (WM_MOVE/WM_SIZE)
updateScreenProperties(vo);
if (vo->opts->fullscreen) {
// Save window position and size when switching to fullscreen.
if (toggle_fs) {
w32->prev_width = vo->dwidth;
w32->prev_height = vo->dheight;
w32->prev_x = w32->window_x;
w32->prev_y = w32->window_y;
MP_VERBOSE(vo, "save window bounds: %d:%d:%d:%d\n",
w32->prev_x, w32->prev_y, w32->prev_width, w32->prev_height);
}
vo->dwidth = vo->opts->screenwidth;
vo->dheight = vo->opts->screenheight;
w32->window_x = vo->xinerama_x;
w32->window_y = vo->xinerama_y;
style &= ~WS_OVERLAPPEDWINDOW;
} else {
if (toggle_fs) {
// Restore window position and size when switching from fullscreen.
MP_VERBOSE(vo, "restore window bounds: %d:%d:%d:%d\n",
w32->prev_x, w32->prev_y, w32->prev_width, w32->prev_height);
vo->dwidth = w32->prev_width;
vo->dheight = w32->prev_height;
w32->window_x = w32->prev_x;
w32->window_y = w32->prev_y;
}
}
r.left = w32->window_x;
r.right = r.left + vo->dwidth;
r.top = w32->window_y;
r.bottom = r.top + vo->dheight;
SetWindowLong(w32->window, GWL_STYLE, style);
add_window_borders(w32->window, &r);
MP_VERBOSE(vo, "reset window bounds: %d:%d:%d:%d\n",
(int) r.left, (int) r.top, (int)(r.right - r.left),
(int)(r.bottom - r.top));
SetWindowPos(w32->window, layer, r.left, r.top, r.right - r.left,
r.bottom - r.top, SWP_FRAMECHANGED);
// For some reason, moving SWP_SHOWWINDOW to a second call works better
// with wine: returning from fullscreen doesn't cause a bogus resize to
// screen size.
// It's not needed on Windows XP or wine with a virtual desktop.
// It doesn't seem to have any negative effects.
SetWindowPos(w32->window, NULL, 0, 0, 0, 0,
SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_SHOWWINDOW);
return 1;
}
/**
* \brief Configure and show window on the screen.
*
* This function should be called in libvo's "config" callback.
* It configures a window and shows it on the screen.
*
* \return 1 - Success, 0 - Failure
*/
int vo_w32_config(struct vo *vo, uint32_t width, uint32_t height,
uint32_t flags)
{
struct vo_w32_state *w32 = vo->w32;
PIXELFORMATDESCRIPTOR pfd;
int pf;
HDC vo_hdc = GetDC(w32->window);
memset(&pfd, 0, sizeof pfd);
pfd.nSize = sizeof pfd;
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
if (flags & VOFLAG_STEREO)
pfd.dwFlags |= PFD_STEREO;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = 24;
pfd.iLayerType = PFD_MAIN_PLANE;
pf = ChoosePixelFormat(vo_hdc, &pfd);
if (!pf) {
MP_ERR(vo, "win32: unable to select a valid pixel format!\n");
ReleaseDC(w32->window, vo_hdc);
return 0;
}
SetPixelFormat(vo_hdc, pf, &pfd);
ReleaseDC(w32->window, vo_hdc);
// we already have a fully initialized window, so nothing needs to be done
if (flags & VOFLAG_HIDDEN)
return 1;
bool reset_size = !(w32->o_dwidth == width && w32->o_dheight == height);
w32->o_dwidth = width;
w32->o_dheight = height;
// the desired size is ignored in wid mode, it always matches the window size.
if (vo->opts->WinID < 0) {
if (w32->window_bounds_initialized) {
// restore vo_dwidth/vo_dheight, which are reset against our will
// in vo_config()
RECT r;
GetClientRect(w32->window, &r);
vo->dwidth = r.right;
vo->dheight = r.bottom;
} else {
// first vo_config call; vo_config() will always set vo_dx/dy so
// that the window is centered on the screen, and this is the only
// time we actually want to use vo_dy/dy (this is not sane, and
// vo.h should provide a function to query the initial
// window position instead)
w32->window_bounds_initialized = true;
reset_size = true;
w32->window_x = w32->prev_x = vo->dx;
w32->window_y = w32->prev_y = vo->dy;
}
if (reset_size) {
w32->prev_width = vo->dwidth = width;
w32->prev_height = vo->dheight = height;
}
} else {
RECT r;
GetClientRect(w32->window, &r);
vo->dwidth = r.right;
vo->dheight = r.bottom;
}
return reinit_window_state(vo);
}
/**
* \brief Initialize w32_common framework.
*
* The first function that should be called from the w32_common framework.
* It handles window creation on the screen with proper title and attributes.
* It also initializes the framework's internal variables. The function should
* be called after your own preinit initialization and you shouldn't do any
* window management on your own.
*
* Global libvo variables changed:
* vo_w32_window
* vo_screenwidth
* vo_screenheight
*
* \return 1 = Success, 0 = Failure
*/
int vo_w32_init(struct vo *vo)
{
assert(!vo->w32);
struct vo_w32_state *w32 = talloc_zero(vo, struct vo_w32_state);
vo->w32 = w32;
HINSTANCE hInstance = GetModuleHandleW(NULL);
WNDCLASSEXW wcex = {
.cbSize = sizeof wcex,
.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW,
.lpfnWndProc = WndProc,
.hInstance = hInstance,
.hIcon = LoadIconW(hInstance, L"IDI_ICON1"),
.hCursor = LoadCursor(NULL, IDC_ARROW),
.lpszClassName = classname,
};
if (!RegisterClassExW(&wcex)) {
MP_ERR(vo, "win32: unable to register window class!\n");
return 0;
}
if (vo->opts->WinID >= 0) {
RECT r;
GetClientRect(WIN_ID_TO_HWND(vo->opts->WinID), &r);
vo->dwidth = r.right; vo->dheight = r.bottom;
w32->window = CreateWindowExW(WS_EX_NOPARENTNOTIFY, classname,
classname,
WS_CHILD | WS_VISIBLE,
0, 0, vo->dwidth, vo->dheight,
WIN_ID_TO_HWND(vo->opts->WinID),
0, hInstance, vo);
} else {
w32->window = CreateWindowExW(0, classname,
classname,
update_style(vo, 0),
CW_USEDEFAULT, 0, 100, 100,
0, 0, hInstance, vo);
}
if (!w32->window) {
MP_ERR(vo, "win32: unable to create window!\n");
return 0;
}
if (OleInitialize(NULL) == S_OK) {
fmtetc_url.cfFormat = (CLIPFORMAT)RegisterClipboardFormat(TEXT("UniformResourceLocator"));
DropTarget* dropTarget = talloc(NULL, DropTarget);
DropTarget_Init(dropTarget, vo);
RegisterDragDrop(w32->window, &dropTarget->iface);
}
w32->tracking = FALSE;
w32->trackEvent = (TRACKMOUSEEVENT){
.cbSize = sizeof(TRACKMOUSEEVENT),
.dwFlags = TME_LEAVE,
.hwndTrack = w32->window,
};
if (vo->opts->WinID >= 0)
EnableWindow(w32->window, 0);
w32->cursor_visible = true;
// we don't have proper event handling
vo->wakeup_period = 0.02;
updateScreenProperties(vo);
MP_VERBOSE(vo, "win32: running at %dx%d\n",
vo->opts->screenwidth, vo->opts->screenheight);
return 1;
}
/**
* \brief Toogle fullscreen / windowed mode.
*
* Should be called on VOCTRL_FULLSCREEN event. The window is
* always resized during this call, so the rendering context
* should be reinitialized with the new dimensions.
* It is unspecified if vo_check_events will create a resize
* event in addition or not.
*/
static void vo_w32_fullscreen(struct vo *vo)
{
if (vo->opts->fullscreen != vo->w32->current_fs)
reinit_window_state(vo);
}
/**
* \brief Toogle window border attribute.
*
* Should be called on VOCTRL_BORDER event.
*/
static void vo_w32_border(struct vo *vo)
{
vo->opts->border = !vo->opts->border;
reinit_window_state(vo);
}
/**
* \brief Toogle window ontop attribute.
*
* Should be called on VOCTRL_ONTOP event.
*/
static void vo_w32_ontop(struct vo *vo)
{
vo->opts->ontop = !vo->opts->ontop;
reinit_window_state(vo);
}
static bool vo_w32_is_cursor_in_client(struct vo *vo)
{
DWORD pos = GetMessagePos();
return SendMessage(vo->w32->window, WM_NCHITTEST, 0, pos) == HTCLIENT;
}
int vo_w32_control(struct vo *vo, int *events, int request, void *arg)
{
struct vo_w32_state *w32 = vo->w32;
switch (request) {
case VOCTRL_CHECK_EVENTS:
*events |= vo_w32_check_events(vo);
return VO_TRUE;
case VOCTRL_FULLSCREEN:
vo_w32_fullscreen(vo);
*events |= VO_EVENT_RESIZE;
return VO_TRUE;
case VOCTRL_ONTOP:
vo_w32_ontop(vo);
return VO_TRUE;
case VOCTRL_BORDER:
vo_w32_border(vo);
*events |= VO_EVENT_RESIZE;
return VO_TRUE;
case VOCTRL_UPDATE_SCREENINFO:
w32_update_xinerama_info(vo);
return VO_TRUE;
case VOCTRL_GET_WINDOW_SIZE: {
int *s = arg;
if (!w32->window_bounds_initialized)
return VO_FALSE;
s[0] = w32->current_fs ? w32->prev_width : vo->dwidth;
s[1] = w32->current_fs ? w32->prev_height : vo->dheight;
return VO_TRUE;
}
case VOCTRL_SET_WINDOW_SIZE: {
int *s = arg;
if (!w32->window_bounds_initialized)
return VO_FALSE;
if (w32->current_fs) {
w32->prev_width = s[0];
w32->prev_height = s[1];
} else {
vo->dwidth = s[0];
vo->dheight = s[1];
}
reinit_window_state(vo);
*events |= VO_EVENT_RESIZE;
return VO_TRUE;
}
case VOCTRL_SET_CURSOR_VISIBILITY:
w32->cursor_visible = *(bool *)arg;
if (vo_w32_is_cursor_in_client(vo)) {
if (w32->cursor_visible)
SetCursor(LoadCursor(NULL, IDC_ARROW));
else
SetCursor(NULL);
}
return VO_TRUE;
case VOCTRL_KILL_SCREENSAVER:
w32->disable_screensaver = true;
SetThreadExecutionState(ES_CONTINUOUS | ES_DISPLAY_REQUIRED);
return VO_TRUE;
case VOCTRL_RESTORE_SCREENSAVER:
w32->disable_screensaver = false;
SetThreadExecutionState(ES_CONTINUOUS);
return VO_TRUE;
case VOCTRL_UPDATE_WINDOW_TITLE: {
wchar_t *title = mp_from_utf8(NULL, (char *)arg);
SetWindowTextW(w32->window, title);
talloc_free(title);
return VO_TRUE;
}
}
return VO_NOTIMPL;
}
/**
* \brief Uninitialize w32_common framework.
*
* Should be called last in video driver's uninit function. First release
* anything built on top of the created window e.g. rendering context inside
* and call vo_w32_uninit at the end.
*/
void vo_w32_uninit(struct vo *vo)
{
struct vo_w32_state *w32 = vo->w32;
MP_VERBOSE(vo, "win32: uninit\n");
if (!w32)
return;
RevokeDragDrop(w32->window);
OleUninitialize();
SetThreadExecutionState(ES_CONTINUOUS);
DestroyWindow(w32->window);
UnregisterClassW(classname, 0);
talloc_free(w32);
vo->w32 = NULL;
}
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