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glfw/src/win32_window.c
Camilla Berglund 6f313ff245 Win32: Use helper window to load WGL extensions 
This removes window re-creation logic by performing the initial context
creation on the helper window, simplifying both window and context
creation and paving the way for attaching to existing window handles
without compromising on context or framebuffer hint support.
2016-06-22 23:33:34 +02:00

1708 lines
49 KiB
C
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//========================================================================
// GLFW 3.2 Win32 - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2016 Camilla Berglund <elmindreda@glfw.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
#include "internal.h"
#include <limits.h>
#include <stdlib.h>
#include <malloc.h>
#include <string.h>
#include <windowsx.h>
#include <shellapi.h>
#define _GLFW_KEY_INVALID -2
// Returns the window style for the specified window
//
static DWORD getWindowStyle(const _GLFWwindow* window)
{
DWORD style = WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
if (window->monitor)
style |= WS_POPUP;
else
{
if (window->decorated)
{
style |= WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX;
if (window->resizable)
style |= WS_MAXIMIZEBOX | WS_THICKFRAME;
}
else
style |= WS_POPUP;
}
return style;
}
// Returns the extended window style for the specified window
//
static DWORD getWindowExStyle(const _GLFWwindow* window)
{
DWORD style = WS_EX_APPWINDOW;
if (window->monitor || window->floating)
style |= WS_EX_TOPMOST;
return style;
}
// Returns the image whose area most closely matches the desired one
//
static const GLFWimage* chooseImage(int count, const GLFWimage* images,
int width, int height)
{
int i, leastDiff = INT_MAX;
const GLFWimage* closest = NULL;
for (i = 0; i < count; i++)
{
const int currDiff = abs(images[i].width * images[i].height -
width * height);
if (currDiff < leastDiff)
{
closest = images + i;
leastDiff = currDiff;
}
}
return closest;
}
// Creates an RGBA icon or cursor
//
static HICON createIcon(const GLFWimage* image,
int xhot, int yhot, GLFWbool icon)
{
int i;
HDC dc;
HICON handle;
HBITMAP color, mask;
BITMAPV5HEADER bi;
ICONINFO ii;
unsigned char* target = NULL;
unsigned char* source = image->pixels;
ZeroMemory(&bi, sizeof(bi));
bi.bV5Size = sizeof(BITMAPV5HEADER);
bi.bV5Width = image->width;
bi.bV5Height = -image->height;
bi.bV5Planes = 1;
bi.bV5BitCount = 32;
bi.bV5Compression = BI_BITFIELDS;
bi.bV5RedMask = 0x00ff0000;
bi.bV5GreenMask = 0x0000ff00;
bi.bV5BlueMask = 0x000000ff;
bi.bV5AlphaMask = 0xff000000;
dc = GetDC(NULL);
color = CreateDIBSection(dc,
(BITMAPINFO*) &bi,
DIB_RGB_COLORS,
(void**) &target,
NULL,
(DWORD) 0);
ReleaseDC(NULL, dc);
if (!color)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to create RGBA bitmap");
return NULL;
}
mask = CreateBitmap(image->width, image->height, 1, 1, NULL);
if (!mask)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to create mask bitmap");
DeleteObject(color);
return NULL;
}
for (i = 0; i < image->width * image->height; i++)
{
target[0] = source[2];
target[1] = source[1];
target[2] = source[0];
target[3] = source[3];
target += 4;
source += 4;
}
ZeroMemory(&ii, sizeof(ii));
ii.fIcon = icon;
ii.xHotspot = xhot;
ii.yHotspot = yhot;
ii.hbmMask = mask;
ii.hbmColor = color;
handle = CreateIconIndirect(&ii);
DeleteObject(color);
DeleteObject(mask);
if (!handle)
{
if (icon)
_glfwInputError(GLFW_PLATFORM_ERROR, "Win32: Failed to create icon");
else
_glfwInputError(GLFW_PLATFORM_ERROR, "Win32: Failed to create cursor");
}
return handle;
}
// Translate client window size to full window size according to styles
//
static void getFullWindowSize(DWORD style, DWORD exStyle,
int clientWidth, int clientHeight,
int* fullWidth, int* fullHeight)
{
RECT rect = { 0, 0, clientWidth, clientHeight };
AdjustWindowRectEx(&rect, style, FALSE, exStyle);
*fullWidth = rect.right - rect.left;
*fullHeight = rect.bottom - rect.top;
}
// Enforce the client rect aspect ratio based on which edge is being dragged
//
static void applyAspectRatio(_GLFWwindow* window, int edge, RECT* area)
{
int xoff, yoff;
const float ratio = (float) window->numer / (float) window->denom;
getFullWindowSize(getWindowStyle(window), getWindowExStyle(window),
0, 0, &xoff, &yoff);
if (edge == WMSZ_LEFT || edge == WMSZ_BOTTOMLEFT ||
edge == WMSZ_RIGHT || edge == WMSZ_BOTTOMRIGHT)
{
area->bottom = area->top + yoff +
(int) ((area->right - area->left - xoff) / ratio);
}
else if (edge == WMSZ_TOPLEFT || edge == WMSZ_TOPRIGHT)
{
area->top = area->bottom - yoff -
(int) ((area->right - area->left - xoff) / ratio);
}
else if (edge == WMSZ_TOP || edge == WMSZ_BOTTOM)
{
area->right = area->left + xoff +
(int) ((area->bottom - area->top - yoff) * ratio);
}
}
// Centers the cursor over the window client area
//
static void centerCursor(_GLFWwindow* window)
{
int width, height;
_glfwPlatformGetWindowSize(window, &width, &height);
_glfwPlatformSetCursorPos(window, width / 2.0, height / 2.0);
}
// Returns whether the cursor is in the client area of the specified window
//
static GLFWbool cursorInClientArea(_GLFWwindow* window)
{
RECT area;
POINT pos;
if (!GetCursorPos(&pos))
return GLFW_FALSE;
if (WindowFromPoint(pos) != window->win32.handle)
return GLFW_FALSE;
GetClientRect(window->win32.handle, &area);
ClientToScreen(window->win32.handle, (POINT*) &area.left);
ClientToScreen(window->win32.handle, (POINT*) &area.right);
return PtInRect(&area, pos);
}
// Updates the cursor image according to its cursor mode
//
static void updateCursorImage(_GLFWwindow* window)
{
if (window->cursorMode == GLFW_CURSOR_NORMAL)
{
if (window->cursor)
SetCursor(window->cursor->win32.handle);
else
SetCursor(LoadCursorW(NULL, IDC_ARROW));
}
else
SetCursor(NULL);
}
// Updates the cursor clip rect
//
static void updateClipRect(_GLFWwindow* window)
{
if (window)
{
RECT clipRect;
GetClientRect(window->win32.handle, &clipRect);
ClientToScreen(window->win32.handle, (POINT*) &clipRect.left);
ClientToScreen(window->win32.handle, (POINT*) &clipRect.right);
ClipCursor(&clipRect);
}
else
ClipCursor(NULL);
}
// Translates a GLFW standard cursor to a resource ID
//
static LPWSTR translateCursorShape(int shape)
{
switch (shape)
{
case GLFW_ARROW_CURSOR:
return IDC_ARROW;
case GLFW_IBEAM_CURSOR:
return IDC_IBEAM;
case GLFW_CROSSHAIR_CURSOR:
return IDC_CROSS;
case GLFW_HAND_CURSOR:
return IDC_HAND;
case GLFW_HRESIZE_CURSOR:
return IDC_SIZEWE;
case GLFW_VRESIZE_CURSOR:
return IDC_SIZENS;
}
return NULL;
}
// Retrieves and translates modifier keys
//
static int getKeyMods(void)
{
int mods = 0;
if (GetKeyState(VK_SHIFT) & (1 << 31))
mods |= GLFW_MOD_SHIFT;
if (GetKeyState(VK_CONTROL) & (1 << 31))
mods |= GLFW_MOD_CONTROL;
if (GetKeyState(VK_MENU) & (1 << 31))
mods |= GLFW_MOD_ALT;
if ((GetKeyState(VK_LWIN) | GetKeyState(VK_RWIN)) & (1 << 31))
mods |= GLFW_MOD_SUPER;
return mods;
}
// Retrieves and translates modifier keys
//
static int getAsyncKeyMods(void)
{
int mods = 0;
if (GetAsyncKeyState(VK_SHIFT) & (1 << 31))
mods |= GLFW_MOD_SHIFT;
if (GetAsyncKeyState(VK_CONTROL) & (1 << 31))
mods |= GLFW_MOD_CONTROL;
if (GetAsyncKeyState(VK_MENU) & (1 << 31))
mods |= GLFW_MOD_ALT;
if ((GetAsyncKeyState(VK_LWIN) | GetAsyncKeyState(VK_RWIN)) & (1 << 31))
mods |= GLFW_MOD_SUPER;
return mods;
}
// Translates a Windows key to the corresponding GLFW key
//
static int translateKey(WPARAM wParam, LPARAM lParam)
{
if (wParam == VK_CONTROL)
{
// The CTRL keys require special handling
MSG next;
DWORD time;
// Is this an extended key (i.e. right key)?
if (lParam & 0x01000000)
return GLFW_KEY_RIGHT_CONTROL;
// Here is a trick: "Alt Gr" sends LCTRL, then RALT. We only
// want the RALT message, so we try to see if the next message
// is a RALT message. In that case, this is a false LCTRL!
time = GetMessageTime();
if (PeekMessageW(&next, NULL, 0, 0, PM_NOREMOVE))
{
if (next.message == WM_KEYDOWN ||
next.message == WM_SYSKEYDOWN ||
next.message == WM_KEYUP ||
next.message == WM_SYSKEYUP)
{
if (next.wParam == VK_MENU &&
(next.lParam & 0x01000000) &&
next.time == time)
{
// Next message is a RALT down message, which
// means that this is not a proper LCTRL message
return _GLFW_KEY_INVALID;
}
}
}
return GLFW_KEY_LEFT_CONTROL;
}
if (wParam == VK_PROCESSKEY)
{
// IME notifies that keys have been filtered by setting the virtual
// key-code to VK_PROCESSKEY
return _GLFW_KEY_INVALID;
}
return _glfw.win32.publicKeys[HIWORD(lParam) & 0x1FF];
}
// Make the specified window and its video mode active on its monitor
//
static GLFWbool acquireMonitor(_GLFWwindow* window)
{
GLFWvidmode mode;
GLFWbool status;
int xpos, ypos;
status = _glfwSetVideoModeWin32(window->monitor, &window->videoMode);
_glfwPlatformGetVideoMode(window->monitor, &mode);
_glfwPlatformGetMonitorPos(window->monitor, &xpos, &ypos);
SetWindowPos(window->win32.handle, HWND_TOPMOST,
xpos, ypos, mode.width, mode.height,
SWP_NOACTIVATE | SWP_NOCOPYBITS);
_glfwInputMonitorWindowChange(window->monitor, window);
return status;
}
// Remove the window and restore the original video mode
//
static void releaseMonitor(_GLFWwindow* window)
{
if (window->monitor->window != window)
return;
_glfwInputMonitorWindowChange(window->monitor, NULL);
_glfwRestoreVideoModeWin32(window->monitor);
}
// Window callback function (handles window messages)
//
static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg,
WPARAM wParam, LPARAM lParam)
{
_GLFWwindow* window = GetPropW(hWnd, L"GLFW");
if (!window)
{
// This is the message handling for the hidden helper window
switch (uMsg)
{
case WM_DEVICECHANGE:
{
if (wParam == DBT_DEVNODES_CHANGED)
{
_glfwInputMonitorChange();
return TRUE;
}
else if (wParam == DBT_DEVICEARRIVAL)
{
DEV_BROADCAST_HDR* dbh = (DEV_BROADCAST_HDR*) lParam;
if (dbh)
{
if (dbh->dbch_devicetype == DBT_DEVTYP_DEVICEINTERFACE)
_glfwDetectJoystickConnectionWin32();
}
}
else if (wParam == DBT_DEVICEREMOVECOMPLETE)
{
DEV_BROADCAST_HDR* dbh = (DEV_BROADCAST_HDR*) lParam;
if (dbh)
{
if (dbh->dbch_devicetype == DBT_DEVTYP_DEVICEINTERFACE)
_glfwDetectJoystickDisconnectionWin32();
}
}
break;
}
}
return DefWindowProcW(hWnd, uMsg, wParam, lParam);
}
switch (uMsg)
{
case WM_SETFOCUS:
{
_glfwInputWindowFocus(window, GLFW_TRUE);
if (window->cursorMode == GLFW_CURSOR_DISABLED)
_glfwPlatformSetCursorMode(window, GLFW_CURSOR_DISABLED);
return 0;
}
case WM_KILLFOCUS:
{
if (window->cursorMode == GLFW_CURSOR_DISABLED)
_glfwPlatformSetCursorMode(window, GLFW_CURSOR_NORMAL);
if (window->monitor && window->autoIconify)
_glfwPlatformIconifyWindow(window);
_glfwInputWindowFocus(window, GLFW_FALSE);
return 0;
}
case WM_SYSCOMMAND:
{
switch (wParam & 0xfff0)
{
case SC_SCREENSAVE:
case SC_MONITORPOWER:
{
if (window->monitor)
{
// We are running in full screen mode, so disallow
// screen saver and screen blanking
return 0;
}
else
break;
}
// User trying to access application menu using ALT?
case SC_KEYMENU:
return 0;
}
break;
}
case WM_CLOSE:
{
_glfwInputWindowCloseRequest(window);
return 0;
}
case WM_CHAR:
case WM_SYSCHAR:
case WM_UNICHAR:
{
const GLFWbool plain = (uMsg != WM_SYSCHAR);
if (uMsg == WM_UNICHAR && wParam == UNICODE_NOCHAR)
{
// WM_UNICHAR is not sent by Windows, but is sent by some
// third-party input method engine
// Returning TRUE here announces support for this message
return TRUE;
}
_glfwInputChar(window, (unsigned int) wParam, getKeyMods(), plain);
return 0;
}
case WM_KEYDOWN:
case WM_SYSKEYDOWN:
case WM_KEYUP:
case WM_SYSKEYUP:
{
const int key = translateKey(wParam, lParam);
const int scancode = (lParam >> 16) & 0x1ff;
const int action = ((lParam >> 31) & 1) ? GLFW_RELEASE : GLFW_PRESS;
const int mods = getKeyMods();
if (key == _GLFW_KEY_INVALID)
break;
if (action == GLFW_RELEASE && wParam == VK_SHIFT)
{
// Release both Shift keys on Shift up event, as only one event
// is sent even if both keys are released
_glfwInputKey(window, GLFW_KEY_LEFT_SHIFT, scancode, action, mods);
_glfwInputKey(window, GLFW_KEY_RIGHT_SHIFT, scancode, action, mods);
}
else if (wParam == VK_SNAPSHOT)
{
// Key down is not reported for the Print Screen key
_glfwInputKey(window, key, scancode, GLFW_PRESS, mods);
_glfwInputKey(window, key, scancode, GLFW_RELEASE, mods);
}
else
_glfwInputKey(window, key, scancode, action, mods);
break;
}
case WM_LBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_XBUTTONDOWN:
case WM_LBUTTONUP:
case WM_RBUTTONUP:
case WM_MBUTTONUP:
case WM_XBUTTONUP:
{
int button, action;
if (uMsg == WM_LBUTTONDOWN || uMsg == WM_LBUTTONUP)
button = GLFW_MOUSE_BUTTON_LEFT;
else if (uMsg == WM_RBUTTONDOWN || uMsg == WM_RBUTTONUP)
button = GLFW_MOUSE_BUTTON_RIGHT;
else if (uMsg == WM_MBUTTONDOWN || uMsg == WM_MBUTTONUP)
button = GLFW_MOUSE_BUTTON_MIDDLE;
else if (GET_XBUTTON_WPARAM(wParam) == XBUTTON1)
button = GLFW_MOUSE_BUTTON_4;
else
button = GLFW_MOUSE_BUTTON_5;
if (uMsg == WM_LBUTTONDOWN || uMsg == WM_RBUTTONDOWN ||
uMsg == WM_MBUTTONDOWN || uMsg == WM_XBUTTONDOWN)
{
action = GLFW_PRESS;
SetCapture(hWnd);
}
else
{
action = GLFW_RELEASE;
ReleaseCapture();
}
_glfwInputMouseClick(window, button, action, getKeyMods());
if (uMsg == WM_XBUTTONDOWN || uMsg == WM_XBUTTONUP)
return TRUE;
return 0;
}
case WM_MOUSEMOVE:
{
const int x = GET_X_LPARAM(lParam);
const int y = GET_Y_LPARAM(lParam);
if (window->cursorMode == GLFW_CURSOR_DISABLED)
{
const int dx = x - window->win32.lastCursorPosX;
const int dy = y - window->win32.lastCursorPosY;
if (_glfw.win32.disabledCursorWindow != window)
break;
_glfwInputCursorPos(window,
window->virtualCursorPosX + dx,
window->virtualCursorPosY + dy);
}
else
_glfwInputCursorPos(window, x, y);
window->win32.lastCursorPosX = x;
window->win32.lastCursorPosY = y;
if (!window->win32.cursorTracked)
{
TRACKMOUSEEVENT tme;
ZeroMemory(&tme, sizeof(tme));
tme.cbSize = sizeof(tme);
tme.dwFlags = TME_LEAVE;
tme.hwndTrack = window->win32.handle;
TrackMouseEvent(&tme);
window->win32.cursorTracked = GLFW_TRUE;
_glfwInputCursorEnter(window, GLFW_TRUE);
}
return 0;
}
case WM_MOUSELEAVE:
{
window->win32.cursorTracked = GLFW_FALSE;
_glfwInputCursorEnter(window, GLFW_FALSE);
return 0;
}
case WM_MOUSEWHEEL:
{
_glfwInputScroll(window, 0.0, (SHORT) HIWORD(wParam) / (double) WHEEL_DELTA);
return 0;
}
case WM_MOUSEHWHEEL:
{
// This message is only sent on Windows Vista and later
// NOTE: The X-axis is inverted for consistency with OS X and X11.
_glfwInputScroll(window, -((SHORT) HIWORD(wParam) / (double) WHEEL_DELTA), 0.0);
return 0;
}
case WM_ENTERSIZEMOVE:
case WM_ENTERMENULOOP:
{
if (window->cursorMode == GLFW_CURSOR_DISABLED)
_glfwPlatformSetCursorMode(window, GLFW_CURSOR_NORMAL);
break;
}
case WM_EXITSIZEMOVE:
case WM_EXITMENULOOP:
{
if (window->cursorMode == GLFW_CURSOR_DISABLED)
_glfwPlatformSetCursorMode(window, GLFW_CURSOR_DISABLED);
break;
}
case WM_SIZE:
{
const GLFWbool iconified =
!window->win32.iconified && wParam == SIZE_MINIMIZED;
const GLFWbool restored =
window->win32.iconified &&
(wParam == SIZE_RESTORED || wParam == SIZE_MAXIMIZED);
if (_glfw.win32.disabledCursorWindow == window)
updateClipRect(window);
if (iconified)
_glfwInputWindowIconify(window, GLFW_TRUE);
else if (restored)
_glfwInputWindowIconify(window, GLFW_FALSE);
_glfwInputFramebufferSize(window, LOWORD(lParam), HIWORD(lParam));
_glfwInputWindowSize(window, LOWORD(lParam), HIWORD(lParam));
if (iconified)
{
window->win32.iconified = GLFW_TRUE;
if (window->monitor)
releaseMonitor(window);
}
else if (restored)
{
window->win32.iconified = GLFW_FALSE;
if (window->monitor)
acquireMonitor(window);
}
return 0;
}
case WM_MOVE:
{
if (_glfw.win32.disabledCursorWindow == window)
updateClipRect(window);
// NOTE: This cannot use LOWORD/HIWORD recommended by MSDN, as
// those macros do not handle negative window positions correctly
_glfwInputWindowPos(window,
GET_X_LPARAM(lParam),
GET_Y_LPARAM(lParam));
return 0;
}
case WM_SIZING:
{
if (window->numer == GLFW_DONT_CARE ||
window->denom == GLFW_DONT_CARE)
{
break;
}
applyAspectRatio(window, (int) wParam, (RECT*) lParam);
return TRUE;
}
case WM_GETMINMAXINFO:
{
int xoff, yoff;
MINMAXINFO* mmi = (MINMAXINFO*) lParam;
if (window->monitor)
break;
getFullWindowSize(getWindowStyle(window), getWindowExStyle(window),
0, 0, &xoff, &yoff);
if (window->minwidth != GLFW_DONT_CARE &&
window->minheight != GLFW_DONT_CARE)
{
mmi->ptMinTrackSize.x = window->minwidth + xoff;
mmi->ptMinTrackSize.y = window->minheight + yoff;
}
if (window->maxwidth != GLFW_DONT_CARE &&
window->maxheight != GLFW_DONT_CARE)
{
mmi->ptMaxTrackSize.x = window->maxwidth + xoff;
mmi->ptMaxTrackSize.y = window->maxheight + yoff;
}
return 0;
}
case WM_PAINT:
{
_glfwInputWindowDamage(window);
break;
}
case WM_ERASEBKGND:
{
return TRUE;
}
case WM_SETCURSOR:
{
if (LOWORD(lParam) == HTCLIENT)
{
updateCursorImage(window);
return TRUE;
}
break;
}
case WM_DPICHANGED:
{
RECT* rect = (RECT*) lParam;
SetWindowPos(window->win32.handle,
HWND_TOP,
rect->left,
rect->top,
rect->right - rect->left,
rect->bottom - rect->top,
SWP_NOACTIVATE | SWP_NOZORDER);
break;
}
case WM_DROPFILES:
{
HDROP drop = (HDROP) wParam;
POINT pt;
int i;
const int count = DragQueryFileW(drop, 0xffffffff, NULL, 0);
char** paths = calloc(count, sizeof(char*));
// Move the mouse to the position of the drop
DragQueryPoint(drop, &pt);
_glfwInputCursorPos(window, pt.x, pt.y);
for (i = 0; i < count; i++)
{
const UINT length = DragQueryFileW(drop, i, NULL, 0);
WCHAR* buffer = calloc(length + 1, sizeof(WCHAR));
DragQueryFileW(drop, i, buffer, length + 1);
paths[i] = _glfwCreateUTF8FromWideStringWin32(buffer);
free(buffer);
}
_glfwInputDrop(window, count, (const char**) paths);
for (i = 0; i < count; i++)
free(paths[i]);
free(paths);
DragFinish(drop);
return 0;
}
}
return DefWindowProcW(hWnd, uMsg, wParam, lParam);
}
// Creates the GLFW window and rendering context
//
static int createWindow(_GLFWwindow* window, const _GLFWwndconfig* wndconfig)
{
int xpos, ypos, fullWidth, fullHeight;
WCHAR* wideTitle;
DWORD style = getWindowStyle(window);
DWORD exStyle = getWindowExStyle(window);
if (window->monitor)
{
GLFWvidmode mode;
// NOTE: This window placement is temporary and approximate, as the
// correct position and size cannot be known until the monitor
// video mode has been set
_glfwPlatformGetMonitorPos(window->monitor, &xpos, &ypos);
_glfwPlatformGetVideoMode(window->monitor, &mode);
fullWidth = mode.width;
fullHeight = mode.height;
}
else
{
xpos = CW_USEDEFAULT;
ypos = CW_USEDEFAULT;
if (wndconfig->maximized)
style |= WS_MAXIMIZE;
getFullWindowSize(style, exStyle,
wndconfig->width, wndconfig->height,
&fullWidth, &fullHeight);
}
wideTitle = _glfwCreateWideStringFromUTF8Win32(wndconfig->title);
if (!wideTitle)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to convert window title to UTF-16");
return GLFW_FALSE;
}
window->win32.handle = CreateWindowExW(exStyle,
_GLFW_WNDCLASSNAME,
wideTitle,
style,
xpos, ypos,
fullWidth, fullHeight,
NULL, // No parent window
NULL, // No window menu
GetModuleHandleW(NULL),
NULL);
free(wideTitle);
if (!window->win32.handle)
{
_glfwInputError(GLFW_PLATFORM_ERROR, "Win32: Failed to create window");
return GLFW_FALSE;
}
SetPropW(window->win32.handle, L"GLFW", window);
if (_glfw_ChangeWindowMessageFilterEx)
{
_glfw_ChangeWindowMessageFilterEx(window->win32.handle,
WM_DROPFILES, MSGFLT_ALLOW, NULL);
_glfw_ChangeWindowMessageFilterEx(window->win32.handle,
WM_COPYDATA, MSGFLT_ALLOW, NULL);
_glfw_ChangeWindowMessageFilterEx(window->win32.handle,
WM_COPYGLOBALDATA, MSGFLT_ALLOW, NULL);
}
DragAcceptFiles(window->win32.handle, TRUE);
return GLFW_TRUE;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW internal API //////
//////////////////////////////////////////////////////////////////////////
// Registers the GLFW window class
//
GLFWbool _glfwRegisterWindowClassWin32(void)
{
WNDCLASSEXW wc;
ZeroMemory(&wc, sizeof(wc));
wc.cbSize = sizeof(wc);
wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
wc.lpfnWndProc = (WNDPROC) windowProc;
wc.hInstance = GetModuleHandleW(NULL);
wc.hCursor = LoadCursorW(NULL, IDC_ARROW);
wc.lpszClassName = _GLFW_WNDCLASSNAME;
// Load user-provided icon if available
wc.hIcon = LoadImageW(GetModuleHandleW(NULL),
L"GLFW_ICON", IMAGE_ICON,
0, 0, LR_DEFAULTSIZE | LR_SHARED);
if (!wc.hIcon)
{
// No user-provided icon found, load default icon
wc.hIcon = LoadImageW(NULL,
IDI_APPLICATION, IMAGE_ICON,
0, 0, LR_DEFAULTSIZE | LR_SHARED);
}
if (!RegisterClassExW(&wc))
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to register window class");
return GLFW_FALSE;
}
return GLFW_TRUE;
}
// Unregisters the GLFW window class
//
void _glfwUnregisterWindowClassWin32(void)
{
UnregisterClassW(_GLFW_WNDCLASSNAME, GetModuleHandleW(NULL));
}
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////
int _glfwPlatformCreateWindow(_GLFWwindow* window,
const _GLFWwndconfig* wndconfig,
const _GLFWctxconfig* ctxconfig,
const _GLFWfbconfig* fbconfig)
{
if (!createWindow(window, wndconfig))
return GLFW_FALSE;
if (ctxconfig->client != GLFW_NO_API)
{
if (ctxconfig->source == GLFW_NATIVE_CONTEXT_API)
{
if (!_glfwCreateContextWGL(window, ctxconfig, fbconfig))
return GLFW_FALSE;
}
else
{
if (!_glfwCreateContextEGL(window, ctxconfig, fbconfig))
return GLFW_FALSE;
}
}
if (window->monitor)
{
_glfwPlatformShowWindow(window);
_glfwPlatformFocusWindow(window);
if (!acquireMonitor(window))
return GLFW_FALSE;
centerCursor(window);
}
return GLFW_TRUE;
}
void _glfwPlatformDestroyWindow(_GLFWwindow* window)
{
if (window->monitor)
releaseMonitor(window);
if (window->context.client != GLFW_NO_API)
window->context.destroy(window);
if (_glfw.win32.disabledCursorWindow == window)
_glfw.win32.disabledCursorWindow = NULL;
if (window->win32.handle)
{
RemovePropW(window->win32.handle, L"GLFW");
DestroyWindow(window->win32.handle);
window->win32.handle = NULL;
}
if (window->win32.bigIcon)
DestroyIcon(window->win32.bigIcon);
if (window->win32.smallIcon)
DestroyIcon(window->win32.smallIcon);
}
void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title)
{
WCHAR* wideTitle = _glfwCreateWideStringFromUTF8Win32(title);
if (!wideTitle)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to convert window title to UTF-16");
return;
}
SetWindowTextW(window->win32.handle, wideTitle);
free(wideTitle);
}
void _glfwPlatformSetWindowIcon(_GLFWwindow* window,
int count, const GLFWimage* images)
{
HICON bigIcon = NULL, smallIcon = NULL;
if (count)
{
const GLFWimage* bigImage = chooseImage(count, images,
GetSystemMetrics(SM_CXICON),
GetSystemMetrics(SM_CYICON));
const GLFWimage* smallImage = chooseImage(count, images,
GetSystemMetrics(SM_CXSMICON),
GetSystemMetrics(SM_CYSMICON));
bigIcon = createIcon(bigImage, 0, 0, GLFW_TRUE);
smallIcon = createIcon(smallImage, 0, 0, GLFW_TRUE);
}
else
{
bigIcon = (HICON) GetClassLongPtrW(window->win32.handle, GCLP_HICON);
smallIcon = (HICON) GetClassLongPtrW(window->win32.handle, GCLP_HICONSM);
}
SendMessage(window->win32.handle, WM_SETICON, ICON_BIG, (LPARAM) bigIcon);
SendMessage(window->win32.handle, WM_SETICON, ICON_SMALL, (LPARAM) smallIcon);
if (window->win32.bigIcon)
DestroyIcon(window->win32.bigIcon);
if (window->win32.smallIcon)
DestroyIcon(window->win32.smallIcon);
if (count)
{
window->win32.bigIcon = bigIcon;
window->win32.smallIcon = smallIcon;
}
}
void _glfwPlatformGetWindowPos(_GLFWwindow* window, int* xpos, int* ypos)
{
POINT pos = { 0, 0 };
ClientToScreen(window->win32.handle, &pos);
if (xpos)
*xpos = pos.x;
if (ypos)
*ypos = pos.y;
}
void _glfwPlatformSetWindowPos(_GLFWwindow* window, int xpos, int ypos)
{
RECT rect = { xpos, ypos, xpos, ypos };
AdjustWindowRectEx(&rect, getWindowStyle(window),
FALSE, getWindowExStyle(window));
SetWindowPos(window->win32.handle, NULL, rect.left, rect.top, 0, 0,
SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOSIZE);
}
void _glfwPlatformGetWindowSize(_GLFWwindow* window, int* width, int* height)
{
RECT area;
GetClientRect(window->win32.handle, &area);
if (width)
*width = area.right;
if (height)
*height = area.bottom;
}
void _glfwPlatformSetWindowSize(_GLFWwindow* window, int width, int height)
{
if (window->monitor)
{
if (window->monitor->window == window)
acquireMonitor(window);
}
else
{
RECT rect = { 0, 0, width, height };
AdjustWindowRectEx(&rect, getWindowStyle(window),
FALSE, getWindowExStyle(window));
SetWindowPos(window->win32.handle, HWND_TOP,
0, 0, rect.right - rect.left, rect.bottom - rect.top,
SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOMOVE | SWP_NOZORDER);
}
}
void _glfwPlatformSetWindowSizeLimits(_GLFWwindow* window,
int minwidth, int minheight,
int maxwidth, int maxheight)
{
RECT area;
if ((minwidth == GLFW_DONT_CARE || minheight == GLFW_DONT_CARE) &&
(maxwidth == GLFW_DONT_CARE || maxheight == GLFW_DONT_CARE))
{
return;
}
GetWindowRect(window->win32.handle, &area);
MoveWindow(window->win32.handle,
area.left, area.top,
area.right - area.left,
area.bottom - area.top, TRUE);
}
void _glfwPlatformSetWindowAspectRatio(_GLFWwindow* window, int numer, int denom)
{
RECT area;
if (numer == GLFW_DONT_CARE || denom == GLFW_DONT_CARE)
return;
GetWindowRect(window->win32.handle, &area);
applyAspectRatio(window, WMSZ_BOTTOMRIGHT, &area);
MoveWindow(window->win32.handle,
area.left, area.top,
area.right - area.left,
area.bottom - area.top, TRUE);
}
void _glfwPlatformGetFramebufferSize(_GLFWwindow* window, int* width, int* height)
{
_glfwPlatformGetWindowSize(window, width, height);
}
void _glfwPlatformGetWindowFrameSize(_GLFWwindow* window,
int* left, int* top,
int* right, int* bottom)
{
RECT rect;
int width, height;
_glfwPlatformGetWindowSize(window, &width, &height);
SetRect(&rect, 0, 0, width, height);
AdjustWindowRectEx(&rect, getWindowStyle(window),
FALSE, getWindowExStyle(window));
if (left)
*left = -rect.left;
if (top)
*top = -rect.top;
if (right)
*right = rect.right - width;
if (bottom)
*bottom = rect.bottom - height;
}
void _glfwPlatformIconifyWindow(_GLFWwindow* window)
{
ShowWindow(window->win32.handle, SW_MINIMIZE);
}
void _glfwPlatformRestoreWindow(_GLFWwindow* window)
{
ShowWindow(window->win32.handle, SW_RESTORE);
}
void _glfwPlatformMaximizeWindow(_GLFWwindow* window)
{
ShowWindow(window->win32.handle, SW_MAXIMIZE);
}
void _glfwPlatformShowWindow(_GLFWwindow* window)
{
ShowWindow(window->win32.handle, SW_SHOW);
}
void _glfwPlatformHideWindow(_GLFWwindow* window)
{
ShowWindow(window->win32.handle, SW_HIDE);
}
void _glfwPlatformFocusWindow(_GLFWwindow* window)
{
BringWindowToTop(window->win32.handle);
SetForegroundWindow(window->win32.handle);
SetFocus(window->win32.handle);
}
void _glfwPlatformSetWindowMonitor(_GLFWwindow* window,
_GLFWmonitor* monitor,
int xpos, int ypos,
int width, int height,
int refreshRate)
{
if (window->monitor == monitor)
{
if (monitor)
{
if (monitor->window == window)
acquireMonitor(window);
}
else
{
RECT rect = { xpos, ypos, xpos + width, ypos + height };
AdjustWindowRectEx(&rect, getWindowStyle(window),
FALSE, getWindowExStyle(window));
SetWindowPos(window->win32.handle, HWND_TOP,
rect.left, rect.top,
rect.right - rect.left, rect.bottom - rect.top,
SWP_NOCOPYBITS | SWP_NOACTIVATE | SWP_NOZORDER);
}
return;
}
if (window->monitor)
releaseMonitor(window);
_glfwInputWindowMonitorChange(window, monitor);
if (monitor)
{
GLFWvidmode mode;
DWORD style = GetWindowLongW(window->win32.handle, GWL_STYLE);
UINT flags = SWP_SHOWWINDOW | SWP_NOACTIVATE | SWP_NOCOPYBITS;
if (window->decorated)
{
style &= ~WS_OVERLAPPEDWINDOW;
style |= getWindowStyle(window);
SetWindowLongW(window->win32.handle, GWL_STYLE, style);
flags |= SWP_FRAMECHANGED;
}
_glfwPlatformGetVideoMode(monitor, &mode);
_glfwPlatformGetMonitorPos(monitor, &xpos, &ypos);
SetWindowPos(window->win32.handle, HWND_TOPMOST,
xpos, ypos, mode.width, mode.height,
flags);
acquireMonitor(window);
}
else
{
HWND after;
RECT rect = { xpos, ypos, xpos + width, ypos + height };
DWORD style = GetWindowLongW(window->win32.handle, GWL_STYLE);
UINT flags = SWP_NOACTIVATE | SWP_NOCOPYBITS;
if (window->decorated)
{
style &= ~WS_POPUP;
style |= getWindowStyle(window);
SetWindowLongW(window->win32.handle, GWL_STYLE, style);
flags |= SWP_FRAMECHANGED;
}
if (window->floating)
after = HWND_TOPMOST;
else
after = HWND_NOTOPMOST;
AdjustWindowRectEx(&rect, getWindowStyle(window),
FALSE, getWindowExStyle(window));
SetWindowPos(window->win32.handle, after,
rect.left, rect.top,
rect.right - rect.left, rect.bottom - rect.top,
flags);
}
}
int _glfwPlatformWindowFocused(_GLFWwindow* window)
{
return window->win32.handle == GetActiveWindow();
}
int _glfwPlatformWindowIconified(_GLFWwindow* window)
{
return IsIconic(window->win32.handle);
}
int _glfwPlatformWindowVisible(_GLFWwindow* window)
{
return IsWindowVisible(window->win32.handle);
}
int _glfwPlatformWindowMaximized(_GLFWwindow* window)
{
return IsZoomed(window->win32.handle);
}
void _glfwPlatformPollEvents(void)
{
MSG msg;
HWND handle;
_GLFWwindow* window;
while (PeekMessageW(&msg, NULL, 0, 0, PM_REMOVE))
{
if (msg.message == WM_QUIT)
{
// Treat WM_QUIT as a close on all windows
// While GLFW does not itself post WM_QUIT, other processes may post
// it to this one, for example Task Manager
window = _glfw.windowListHead;
while (window)
{
_glfwInputWindowCloseRequest(window);
window = window->next;
}
}
else
{
TranslateMessage(&msg);
DispatchMessageW(&msg);
}
}
handle = GetActiveWindow();
if (handle)
{
// LSHIFT/RSHIFT fixup (keys tend to "stick" without this fix)
// This is the only async event handling in GLFW, but it solves some
// nasty problems
window = GetPropW(handle, L"GLFW");
if (window)
{
const int mods = getAsyncKeyMods();
// Get current state of left and right shift keys
const int lshiftDown = (GetAsyncKeyState(VK_LSHIFT) >> 15) & 1;
const int rshiftDown = (GetAsyncKeyState(VK_RSHIFT) >> 15) & 1;
// See if this differs from our belief of what has happened
// (we only have to check for lost key up events)
if (!lshiftDown && window->keys[GLFW_KEY_LEFT_SHIFT] == 1)
_glfwInputKey(window, GLFW_KEY_LEFT_SHIFT, 0, GLFW_RELEASE, mods);
if (!rshiftDown && window->keys[GLFW_KEY_RIGHT_SHIFT] == 1)
_glfwInputKey(window, GLFW_KEY_RIGHT_SHIFT, 0, GLFW_RELEASE, mods);
}
}
window = _glfw.win32.disabledCursorWindow;
if (window)
{
int width, height;
_glfwPlatformGetWindowSize(window, &width, &height);
// NOTE: Re-center the cursor only if it has moved since the last call,
// to avoid breaking glfwWaitEvents with WM_MOUSEMOVE
if (window->win32.lastCursorPosX != width / 2 ||
window->win32.lastCursorPosY != height / 2)
{
_glfwPlatformSetCursorPos(window, width / 2, height / 2);
}
}
}
void _glfwPlatformWaitEvents(void)
{
WaitMessage();
_glfwPlatformPollEvents();
}
void _glfwPlatformWaitEventsTimeout(double timeout)
{
MsgWaitForMultipleObjects(0, NULL, FALSE, (DWORD) (timeout * 1e3), QS_ALLEVENTS);
_glfwPlatformPollEvents();
}
void _glfwPlatformPostEmptyEvent(void)
{
_GLFWwindow* window = _glfw.windowListHead;
PostMessage(window->win32.handle, WM_NULL, 0, 0);
}
void _glfwPlatformGetCursorPos(_GLFWwindow* window, double* xpos, double* ypos)
{
POINT pos;
if (GetCursorPos(&pos))
{
ScreenToClient(window->win32.handle, &pos);
if (xpos)
*xpos = pos.x;
if (ypos)
*ypos = pos.y;
}
}
void _glfwPlatformSetCursorPos(_GLFWwindow* window, double xpos, double ypos)
{
POINT pos = { (int) xpos, (int) ypos };
// Store the new position so it can be recognized later
window->win32.lastCursorPosX = pos.x;
window->win32.lastCursorPosY = pos.y;
ClientToScreen(window->win32.handle, &pos);
SetCursorPos(pos.x, pos.y);
}
void _glfwPlatformSetCursorMode(_GLFWwindow* window, int mode)
{
if (mode == GLFW_CURSOR_DISABLED)
{
_glfw.win32.disabledCursorWindow = window;
_glfwPlatformGetCursorPos(window,
&_glfw.win32.restoreCursorPosX,
&_glfw.win32.restoreCursorPosY);
centerCursor(window);
updateClipRect(window);
}
else if (_glfw.win32.disabledCursorWindow == window)
{
_glfw.win32.disabledCursorWindow = NULL;
updateClipRect(NULL);
_glfwPlatformSetCursorPos(window,
_glfw.win32.restoreCursorPosX,
_glfw.win32.restoreCursorPosY);
}
if (cursorInClientArea(window))
updateCursorImage(window);
}
const char* _glfwPlatformGetKeyName(int key, int scancode)
{
WCHAR name[16];
if (key != GLFW_KEY_UNKNOWN)
scancode = _glfw.win32.nativeKeys[key];
if (!_glfwIsPrintable(_glfw.win32.publicKeys[scancode]))
return NULL;
if (!GetKeyNameTextW(scancode << 16, name, sizeof(name) / sizeof(WCHAR)))
return NULL;
if (!WideCharToMultiByte(CP_UTF8, 0, name, -1,
_glfw.win32.keyName,
sizeof(_glfw.win32.keyName),
NULL, NULL))
{
return NULL;
}
return _glfw.win32.keyName;
}
int _glfwPlatformCreateCursor(_GLFWcursor* cursor,
const GLFWimage* image,
int xhot, int yhot)
{
cursor->win32.handle = (HCURSOR) createIcon(image, xhot, yhot, GLFW_FALSE);
if (!cursor->win32.handle)
return GLFW_FALSE;
return GLFW_TRUE;
}
int _glfwPlatformCreateStandardCursor(_GLFWcursor* cursor, int shape)
{
cursor->win32.handle =
CopyCursor(LoadCursorW(NULL, translateCursorShape(shape)));
if (!cursor->win32.handle)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to create standard cursor");
return GLFW_FALSE;
}
return GLFW_TRUE;
}
void _glfwPlatformDestroyCursor(_GLFWcursor* cursor)
{
if (cursor->win32.handle)
DestroyIcon((HICON) cursor->win32.handle);
}
void _glfwPlatformSetCursor(_GLFWwindow* window, _GLFWcursor* cursor)
{
if (cursorInClientArea(window))
updateCursorImage(window);
}
void _glfwPlatformSetClipboardString(_GLFWwindow* window, const char* string)
{
WCHAR* wideString;
HANDLE stringHandle;
size_t wideSize;
wideString = _glfwCreateWideStringFromUTF8Win32(string);
if (!wideString)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to convert string to UTF-16");
return;
}
wideSize = (wcslen(wideString) + 1) * sizeof(WCHAR);
stringHandle = GlobalAlloc(GMEM_MOVEABLE, wideSize);
if (!stringHandle)
{
free(wideString);
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to allocate global handle for clipboard");
return;
}
memcpy(GlobalLock(stringHandle), wideString, wideSize);
GlobalUnlock(stringHandle);
if (!OpenClipboard(_glfw.win32.helperWindowHandle))
{
GlobalFree(stringHandle);
free(wideString);
_glfwInputError(GLFW_PLATFORM_ERROR, "Win32: Failed to open clipboard");
return;
}
EmptyClipboard();
SetClipboardData(CF_UNICODETEXT, stringHandle);
CloseClipboard();
free(wideString);
}
const char* _glfwPlatformGetClipboardString(_GLFWwindow* window)
{
HANDLE stringHandle;
if (!OpenClipboard(_glfw.win32.helperWindowHandle))
{
_glfwInputError(GLFW_PLATFORM_ERROR, "Win32: Failed to open clipboard");
return NULL;
}
stringHandle = GetClipboardData(CF_UNICODETEXT);
if (!stringHandle)
{
CloseClipboard();
_glfwInputError(GLFW_FORMAT_UNAVAILABLE,
"Win32: Failed to convert clipboard to string");
return NULL;
}
free(_glfw.win32.clipboardString);
_glfw.win32.clipboardString =
_glfwCreateUTF8FromWideStringWin32(GlobalLock(stringHandle));
GlobalUnlock(stringHandle);
CloseClipboard();
if (!_glfw.win32.clipboardString)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to convert wide string to UTF-8");
return NULL;
}
return _glfw.win32.clipboardString;
}
char** _glfwPlatformGetRequiredInstanceExtensions(uint32_t* count)
{
char** extensions;
*count = 0;
if (!_glfw.vk.KHR_win32_surface)
return NULL;
extensions = calloc(2, sizeof(char*));
extensions[0] = strdup("VK_KHR_surface");
extensions[1] = strdup("VK_KHR_win32_surface");
*count = 2;
return extensions;
}
int _glfwPlatformGetPhysicalDevicePresentationSupport(VkInstance instance,
VkPhysicalDevice device,
uint32_t queuefamily)
{
PFN_vkGetPhysicalDeviceWin32PresentationSupportKHR vkGetPhysicalDeviceWin32PresentationSupportKHR =
(PFN_vkGetPhysicalDeviceWin32PresentationSupportKHR)
vkGetInstanceProcAddr(instance, "vkGetPhysicalDeviceWin32PresentationSupportKHR");
if (!vkGetPhysicalDeviceWin32PresentationSupportKHR)
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"Win32: Vulkan instance missing VK_KHR_win32_surface extension");
return GLFW_FALSE;
}
return vkGetPhysicalDeviceWin32PresentationSupportKHR(device, queuefamily);
}
VkResult _glfwPlatformCreateWindowSurface(VkInstance instance,
_GLFWwindow* window,
const VkAllocationCallbacks* allocator,
VkSurfaceKHR* surface)
{
VkResult err;
VkWin32SurfaceCreateInfoKHR sci;
PFN_vkCreateWin32SurfaceKHR vkCreateWin32SurfaceKHR;
vkCreateWin32SurfaceKHR = (PFN_vkCreateWin32SurfaceKHR)
vkGetInstanceProcAddr(instance, "vkCreateWin32SurfaceKHR");
if (!vkCreateWin32SurfaceKHR)
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"Win32: Vulkan instance missing VK_KHR_win32_surface extension");
return VK_ERROR_EXTENSION_NOT_PRESENT;
}
memset(&sci, 0, sizeof(sci));
sci.sType = VK_STRUCTURE_TYPE_WIN32_SURFACE_CREATE_INFO_KHR;
sci.hinstance = GetModuleHandle(NULL);
sci.hwnd = window->win32.handle;
err = vkCreateWin32SurfaceKHR(instance, &sci, allocator, surface);
if (err)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to create Vulkan surface: %s",
_glfwGetVulkanResultString(err));
}
return err;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW native API //////
//////////////////////////////////////////////////////////////////////////
GLFWAPI HWND glfwGetWin32Window(GLFWwindow* handle)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
return window->win32.handle;
}
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