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dexed/JuceLibraryCode/modules/juce_gui_basics/native/juce_win32_Windowing.cpp

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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2015 - ROLI Ltd.
Permission is granted to use this software under the terms of either:
a) the GPL v2 (or any later version)
b) the Affero GPL v3
Details of these licenses can be found at: www.gnu.org/licenses
JUCE 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.
------------------------------------------------------------------------------
To release a closed-source product which uses JUCE, commercial licenses are
available: visit www.juce.com for more information.
==============================================================================
*/
#undef GetSystemMetrics // multimon overrides this for some reason and causes a mess..
// these are in the windows SDK, but need to be repeated here for GCC..
#ifndef GET_APPCOMMAND_LPARAM
#define GET_APPCOMMAND_LPARAM(lParam) ((short) (HIWORD (lParam) & ~FAPPCOMMAND_MASK))
#define FAPPCOMMAND_MASK 0xF000
#define APPCOMMAND_MEDIA_NEXTTRACK 11
#define APPCOMMAND_MEDIA_PREVIOUSTRACK 12
#define APPCOMMAND_MEDIA_STOP 13
#define APPCOMMAND_MEDIA_PLAY_PAUSE 14
#endif
#ifndef WM_APPCOMMAND
#define WM_APPCOMMAND 0x0319
#endif
extern void juce_repeatLastProcessPriority();
extern void juce_checkCurrentlyFocusedTopLevelWindow(); // in juce_TopLevelWindow.cpp
extern bool juce_isRunningInWine();
typedef bool (*CheckEventBlockedByModalComps) (const MSG&);
extern CheckEventBlockedByModalComps isEventBlockedByModalComps;
static bool shouldDeactivateTitleBar = true;
extern void* getUser32Function (const char*);
//==============================================================================
typedef BOOL (WINAPI* UpdateLayeredWinFunc) (HWND, HDC, POINT*, SIZE*, HDC, POINT*, COLORREF, BLENDFUNCTION*, DWORD);
static UpdateLayeredWinFunc updateLayeredWindow = nullptr;
bool Desktop::canUseSemiTransparentWindows() noexcept
{
if (updateLayeredWindow == nullptr && ! juce_isRunningInWine())
updateLayeredWindow = (UpdateLayeredWinFunc) getUser32Function ("UpdateLayeredWindow");
return updateLayeredWindow != nullptr;
}
//==============================================================================
#ifndef WM_TOUCH
#define WM_TOUCH 0x0240
#define TOUCH_COORD_TO_PIXEL(l) ((l) / 100)
#define TOUCHEVENTF_MOVE 0x0001
#define TOUCHEVENTF_DOWN 0x0002
#define TOUCHEVENTF_UP 0x0004
#define TOUCHEVENTF_PRIMARY 0x0010
DECLARE_HANDLE (HTOUCHINPUT);
DECLARE_HANDLE (HGESTUREINFO);
struct TOUCHINPUT
{
LONG x;
LONG y;
HANDLE hSource;
DWORD dwID;
DWORD dwFlags;
DWORD dwMask;
DWORD dwTime;
ULONG_PTR dwExtraInfo;
DWORD cxContact;
DWORD cyContact;
};
struct GESTUREINFO
{
UINT cbSize;
DWORD dwFlags;
DWORD dwID;
HWND hwndTarget;
POINTS ptsLocation;
DWORD dwInstanceID;
DWORD dwSequenceID;
ULONGLONG ullArguments;
UINT cbExtraArgs;
};
#endif
#ifndef MONITOR_DPI_TYPE
enum Monitor_DPI_Type
{
MDT_Effective_DPI = 0,
MDT_Angular_DPI = 1,
MDT_Raw_DPI = 2,
MDT_Default = MDT_Effective_DPI
};
enum Process_DPI_Awareness
{
Process_DPI_Unaware = 0,
Process_System_DPI_Aware = 1,
Process_Per_Monitor_DPI_Aware = 2
};
#endif
typedef BOOL (WINAPI* RegisterTouchWindowFunc) (HWND, ULONG);
typedef BOOL (WINAPI* GetTouchInputInfoFunc) (HTOUCHINPUT, UINT, TOUCHINPUT*, int);
typedef BOOL (WINAPI* CloseTouchInputHandleFunc) (HTOUCHINPUT);
typedef BOOL (WINAPI* GetGestureInfoFunc) (HGESTUREINFO, GESTUREINFO*);
typedef BOOL (WINAPI* SetProcessDPIAwareFunc)();
typedef BOOL (WINAPI* SetProcessDPIAwarenessFunc) (Process_DPI_Awareness);
typedef HRESULT (WINAPI* GetDPIForMonitorFunc) (HMONITOR, Monitor_DPI_Type, UINT*, UINT*);
static RegisterTouchWindowFunc registerTouchWindow = nullptr;
static GetTouchInputInfoFunc getTouchInputInfo = nullptr;
static CloseTouchInputHandleFunc closeTouchInputHandle = nullptr;
static GetGestureInfoFunc getGestureInfo = nullptr;
static SetProcessDPIAwareFunc setProcessDPIAware = nullptr;
static SetProcessDPIAwarenessFunc setProcessDPIAwareness = nullptr;
static GetDPIForMonitorFunc getDPIForMonitor = nullptr;
static bool hasCheckedForMultiTouch = false;
static bool canUseMultiTouch()
{
if (registerTouchWindow == nullptr && ! hasCheckedForMultiTouch)
{
hasCheckedForMultiTouch = true;
registerTouchWindow = (RegisterTouchWindowFunc) getUser32Function ("RegisterTouchWindow");
getTouchInputInfo = (GetTouchInputInfoFunc) getUser32Function ("GetTouchInputInfo");
closeTouchInputHandle = (CloseTouchInputHandleFunc) getUser32Function ("CloseTouchInputHandle");
getGestureInfo = (GetGestureInfoFunc) getUser32Function ("GetGestureInfo");
}
return registerTouchWindow != nullptr;
}
static Rectangle<int> rectangleFromRECT (const RECT& r) noexcept
{
return Rectangle<int>::leftTopRightBottom ((int) r.left, (int) r.top, (int) r.right, (int) r.bottom);
}
static void setWindowPos (HWND hwnd, Rectangle<int> bounds, UINT flags)
{
SetWindowPos (hwnd, 0, bounds.getX(), bounds.getY(), bounds.getWidth(), bounds.getHeight(), flags);
}
static RECT getWindowRect (HWND hwnd)
{
RECT r;
GetWindowRect (hwnd, &r);
return r;
}
static void setWindowZOrder (HWND hwnd, HWND insertAfter)
{
SetWindowPos (hwnd, insertAfter, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE | SWP_NOSENDCHANGING);
}
//==============================================================================
static void setDPIAwareness()
{
#if ! JUCE_DISABLE_WIN32_DPI_AWARENESS
if (JUCEApplicationBase::isStandaloneApp())
{
if (setProcessDPIAwareness == nullptr)
{
HMODULE shcoreModule = GetModuleHandleA ("SHCore.dll");
if (shcoreModule != 0)
{
setProcessDPIAwareness = (SetProcessDPIAwarenessFunc) GetProcAddress (shcoreModule, "SetProcessDpiAwareness");
getDPIForMonitor = (GetDPIForMonitorFunc) GetProcAddress (shcoreModule, "GetDpiForMonitor");
if (setProcessDPIAwareness != nullptr && getDPIForMonitor != nullptr
// && SUCCEEDED (setProcessDPIAwareness (Process_Per_Monitor_DPI_Aware)))
&& SUCCEEDED (setProcessDPIAwareness (Process_System_DPI_Aware))) // (keep using this mode temporarily..)
return;
}
if (setProcessDPIAware == nullptr)
{
setProcessDPIAware = (SetProcessDPIAwareFunc) getUser32Function ("SetProcessDPIAware");
if (setProcessDPIAware != nullptr)
setProcessDPIAware();
}
}
}
#endif
}
static double getGlobalDPI()
{
setDPIAwareness();
HDC dc = GetDC (0);
const double dpi = (GetDeviceCaps (dc, LOGPIXELSX)
+ GetDeviceCaps (dc, LOGPIXELSY)) / 2.0;
ReleaseDC (0, dc);
return dpi;
}
double Desktop::getDefaultMasterScale()
{
return JUCEApplicationBase::isStandaloneApp() ? getGlobalDPI() / 96.0
: 1.0;
}
//==============================================================================
Desktop::DisplayOrientation Desktop::getCurrentOrientation() const
{
return upright;
}
int64 getMouseEventTime()
{
static int64 eventTimeOffset = 0;
static LONG lastMessageTime = 0;
const LONG thisMessageTime = GetMessageTime();
if (thisMessageTime < lastMessageTime || lastMessageTime == 0)
{
lastMessageTime = thisMessageTime;
eventTimeOffset = Time::currentTimeMillis() - thisMessageTime;
}
return eventTimeOffset + thisMessageTime;
}
//==============================================================================
const int extendedKeyModifier = 0x10000;
const int KeyPress::spaceKey = VK_SPACE;
const int KeyPress::returnKey = VK_RETURN;
const int KeyPress::escapeKey = VK_ESCAPE;
const int KeyPress::backspaceKey = VK_BACK;
const int KeyPress::deleteKey = VK_DELETE | extendedKeyModifier;
const int KeyPress::insertKey = VK_INSERT | extendedKeyModifier;
const int KeyPress::tabKey = VK_TAB;
const int KeyPress::leftKey = VK_LEFT | extendedKeyModifier;
const int KeyPress::rightKey = VK_RIGHT | extendedKeyModifier;
const int KeyPress::upKey = VK_UP | extendedKeyModifier;
const int KeyPress::downKey = VK_DOWN | extendedKeyModifier;
const int KeyPress::homeKey = VK_HOME | extendedKeyModifier;
const int KeyPress::endKey = VK_END | extendedKeyModifier;
const int KeyPress::pageUpKey = VK_PRIOR | extendedKeyModifier;
const int KeyPress::pageDownKey = VK_NEXT | extendedKeyModifier;
const int KeyPress::F1Key = VK_F1 | extendedKeyModifier;
const int KeyPress::F2Key = VK_F2 | extendedKeyModifier;
const int KeyPress::F3Key = VK_F3 | extendedKeyModifier;
const int KeyPress::F4Key = VK_F4 | extendedKeyModifier;
const int KeyPress::F5Key = VK_F5 | extendedKeyModifier;
const int KeyPress::F6Key = VK_F6 | extendedKeyModifier;
const int KeyPress::F7Key = VK_F7 | extendedKeyModifier;
const int KeyPress::F8Key = VK_F8 | extendedKeyModifier;
const int KeyPress::F9Key = VK_F9 | extendedKeyModifier;
const int KeyPress::F10Key = VK_F10 | extendedKeyModifier;
const int KeyPress::F11Key = VK_F11 | extendedKeyModifier;
const int KeyPress::F12Key = VK_F12 | extendedKeyModifier;
const int KeyPress::F13Key = VK_F13 | extendedKeyModifier;
const int KeyPress::F14Key = VK_F14 | extendedKeyModifier;
const int KeyPress::F15Key = VK_F15 | extendedKeyModifier;
const int KeyPress::F16Key = VK_F16 | extendedKeyModifier;
const int KeyPress::numberPad0 = VK_NUMPAD0 | extendedKeyModifier;
const int KeyPress::numberPad1 = VK_NUMPAD1 | extendedKeyModifier;
const int KeyPress::numberPad2 = VK_NUMPAD2 | extendedKeyModifier;
const int KeyPress::numberPad3 = VK_NUMPAD3 | extendedKeyModifier;
const int KeyPress::numberPad4 = VK_NUMPAD4 | extendedKeyModifier;
const int KeyPress::numberPad5 = VK_NUMPAD5 | extendedKeyModifier;
const int KeyPress::numberPad6 = VK_NUMPAD6 | extendedKeyModifier;
const int KeyPress::numberPad7 = VK_NUMPAD7 | extendedKeyModifier;
const int KeyPress::numberPad8 = VK_NUMPAD8 | extendedKeyModifier;
const int KeyPress::numberPad9 = VK_NUMPAD9 | extendedKeyModifier;
const int KeyPress::numberPadAdd = VK_ADD | extendedKeyModifier;
const int KeyPress::numberPadSubtract = VK_SUBTRACT | extendedKeyModifier;
const int KeyPress::numberPadMultiply = VK_MULTIPLY | extendedKeyModifier;
const int KeyPress::numberPadDivide = VK_DIVIDE | extendedKeyModifier;
const int KeyPress::numberPadSeparator = VK_SEPARATOR | extendedKeyModifier;
const int KeyPress::numberPadDecimalPoint = VK_DECIMAL | extendedKeyModifier;
const int KeyPress::numberPadEquals = 0x92 /*VK_OEM_NEC_EQUAL*/ | extendedKeyModifier;
const int KeyPress::numberPadDelete = VK_DELETE | extendedKeyModifier;
const int KeyPress::playKey = 0x30000;
const int KeyPress::stopKey = 0x30001;
const int KeyPress::fastForwardKey = 0x30002;
const int KeyPress::rewindKey = 0x30003;
//==============================================================================
class WindowsBitmapImage : public ImagePixelData
{
public:
WindowsBitmapImage (const Image::PixelFormat format,
const int w, const int h, const bool clearImage)
: ImagePixelData (format, w, h)
{
jassert (format == Image::RGB || format == Image::ARGB);
static bool alwaysUse32Bits = isGraphicsCard32Bit(); // NB: for 32-bit cards, it's faster to use a 32-bit image.
pixelStride = (alwaysUse32Bits || format == Image::ARGB) ? 4 : 3;
lineStride = -((w * pixelStride + 3) & ~3);
zerostruct (bitmapInfo);
bitmapInfo.bV4Size = sizeof (BITMAPV4HEADER);
bitmapInfo.bV4Width = w;
bitmapInfo.bV4Height = h;
bitmapInfo.bV4Planes = 1;
bitmapInfo.bV4CSType = 1;
bitmapInfo.bV4BitCount = (unsigned short) (pixelStride * 8);
if (format == Image::ARGB)
{
bitmapInfo.bV4AlphaMask = 0xff000000;
bitmapInfo.bV4RedMask = 0xff0000;
bitmapInfo.bV4GreenMask = 0xff00;
bitmapInfo.bV4BlueMask = 0xff;
bitmapInfo.bV4V4Compression = BI_BITFIELDS;
}
else
{
bitmapInfo.bV4V4Compression = BI_RGB;
}
HDC dc = GetDC (0);
hdc = CreateCompatibleDC (dc);
ReleaseDC (0, dc);
SetMapMode (hdc, MM_TEXT);
hBitmap = CreateDIBSection (hdc, (BITMAPINFO*) &(bitmapInfo), DIB_RGB_COLORS,
(void**) &bitmapData, 0, 0);
previousBitmap = SelectObject (hdc, hBitmap);
if (format == Image::ARGB && clearImage)
zeromem (bitmapData, (size_t) std::abs (h * lineStride));
imageData = bitmapData - (lineStride * (h - 1));
}
~WindowsBitmapImage()
{
SelectObject (hdc, previousBitmap); // Selecting the previous bitmap before deleting the DC avoids a warning in BoundsChecker
DeleteDC (hdc);
DeleteObject (hBitmap);
}
ImageType* createType() const override { return new NativeImageType(); }
LowLevelGraphicsContext* createLowLevelContext() override
{
sendDataChangeMessage();
return new LowLevelGraphicsSoftwareRenderer (Image (this));
}
void initialiseBitmapData (Image::BitmapData& bitmap, int x, int y, Image::BitmapData::ReadWriteMode mode) override
{
bitmap.data = imageData + x * pixelStride + y * lineStride;
bitmap.pixelFormat = pixelFormat;
bitmap.lineStride = lineStride;
bitmap.pixelStride = pixelStride;
if (mode != Image::BitmapData::readOnly)
sendDataChangeMessage();
}
ImagePixelData* clone() override
{
WindowsBitmapImage* im = new WindowsBitmapImage (pixelFormat, width, height, false);
for (int i = 0; i < height; ++i)
memcpy (im->imageData + i * lineStride, imageData + i * lineStride, (size_t) lineStride);
return im;
}
void blitToWindow (HWND hwnd, HDC dc, const bool transparent,
const int x, const int y,
const uint8 updateLayeredWindowAlpha) noexcept
{
SetMapMode (dc, MM_TEXT);
if (transparent)
{
RECT windowBounds = getWindowRect (hwnd);
POINT p = { -x, -y };
POINT pos = { windowBounds.left, windowBounds.top };
SIZE size = { windowBounds.right - windowBounds.left,
windowBounds.bottom - windowBounds.top };
BLENDFUNCTION bf;
bf.AlphaFormat = 1 /*AC_SRC_ALPHA*/;
bf.BlendFlags = 0;
bf.BlendOp = AC_SRC_OVER;
bf.SourceConstantAlpha = updateLayeredWindowAlpha;
updateLayeredWindow (hwnd, 0, &pos, &size, hdc, &p, 0, &bf, 2 /*ULW_ALPHA*/);
}
else
{
StretchDIBits (dc,
x, y, width, height,
0, 0, width, height,
bitmapData, (const BITMAPINFO*) &bitmapInfo,
DIB_RGB_COLORS, SRCCOPY);
}
}
HBITMAP hBitmap;
HGDIOBJ previousBitmap;
BITMAPV4HEADER bitmapInfo;
HDC hdc;
uint8* bitmapData;
int pixelStride, lineStride;
uint8* imageData;
private:
static bool isGraphicsCard32Bit()
{
HDC dc = GetDC (0);
const int bitsPerPixel = GetDeviceCaps (dc, BITSPIXEL);
ReleaseDC (0, dc);
return bitsPerPixel > 24;
}
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (WindowsBitmapImage)
};
//==============================================================================
namespace IconConverters
{
Image createImageFromHBITMAP (HBITMAP bitmap)
{
Image im;
if (bitmap != 0)
{
BITMAP bm;
if (GetObject (bitmap, sizeof (BITMAP), &bm)
&& bm.bmWidth > 0 && bm.bmHeight > 0)
{
HDC tempDC = GetDC (0);
HDC dc = CreateCompatibleDC (tempDC);
ReleaseDC (0, tempDC);
SelectObject (dc, bitmap);
im = Image (Image::ARGB, bm.bmWidth, bm.bmHeight, true);
Image::BitmapData imageData (im, Image::BitmapData::writeOnly);
for (int y = bm.bmHeight; --y >= 0;)
{
for (int x = bm.bmWidth; --x >= 0;)
{
COLORREF col = GetPixel (dc, x, y);
imageData.setPixelColour (x, y, Colour ((uint8) GetRValue (col),
(uint8) GetGValue (col),
(uint8) GetBValue (col)));
}
}
DeleteDC (dc);
}
}
return im;
}
Image createImageFromHICON (HICON icon)
{
ICONINFO info;
if (GetIconInfo (icon, &info))
{
Image mask (createImageFromHBITMAP (info.hbmMask));
Image image (createImageFromHBITMAP (info.hbmColor));
if (mask.isValid() && image.isValid())
{
for (int y = image.getHeight(); --y >= 0;)
{
for (int x = image.getWidth(); --x >= 0;)
{
const float brightness = mask.getPixelAt (x, y).getBrightness();
if (brightness > 0.0f)
image.multiplyAlphaAt (x, y, 1.0f - brightness);
}
}
return image;
}
}
return Image::null;
}
HICON createHICONFromImage (const Image& image, const BOOL isIcon, int hotspotX, int hotspotY)
{
WindowsBitmapImage* nativeBitmap = new WindowsBitmapImage (Image::ARGB, image.getWidth(), image.getHeight(), true);
Image bitmap (nativeBitmap);
{
Graphics g (bitmap);
g.drawImageAt (image, 0, 0);
}
HBITMAP mask = CreateBitmap (image.getWidth(), image.getHeight(), 1, 1, 0);
ICONINFO info;
info.fIcon = isIcon;
info.xHotspot = (DWORD) hotspotX;
info.yHotspot = (DWORD) hotspotY;
info.hbmMask = mask;
info.hbmColor = nativeBitmap->hBitmap;
HICON hi = CreateIconIndirect (&info);
DeleteObject (mask);
return hi;
}
}
//==============================================================================
class HWNDComponentPeer : public ComponentPeer
{
public:
enum RenderingEngineType
{
softwareRenderingEngine = 0,
direct2DRenderingEngine
};
//==============================================================================
HWNDComponentPeer (Component& comp, const int windowStyleFlags, HWND parent, bool nonRepainting)
: ComponentPeer (comp, windowStyleFlags),
dontRepaint (nonRepainting),
parentToAddTo (parent),
currentRenderingEngine (softwareRenderingEngine),
lastPaintTime (0),
lastMagnifySize (0),
fullScreen (false),
isDragging (false),
isMouseOver (false),
hasCreatedCaret (false),
constrainerIsResizing (false),
currentWindowIcon (0),
dropTarget (nullptr),
updateLayeredWindowAlpha (255)
{
callFunctionIfNotLocked (&createWindowCallback, this);
setTitle (component.getName());
if ((windowStyleFlags & windowHasDropShadow) != 0
&& Desktop::canUseSemiTransparentWindows()
&& ((! hasTitleBar()) || SystemStats::getOperatingSystemType() < SystemStats::WinVista))
{
shadower = component.getLookAndFeel().createDropShadowerForComponent (&component);
if (shadower != nullptr)
shadower->setOwner (&component);
}
}
~HWNDComponentPeer()
{
shadower = nullptr;
// do this before the next bit to avoid messages arriving for this window
// before it's destroyed
JuceWindowIdentifier::setAsJUCEWindow (hwnd, false);
callFunctionIfNotLocked (&destroyWindowCallback, (void*) hwnd);
if (currentWindowIcon != 0)
DestroyIcon (currentWindowIcon);
if (dropTarget != nullptr)
{
dropTarget->clear();
dropTarget->Release();
dropTarget = nullptr;
}
#if JUCE_DIRECT2D
direct2DContext = nullptr;
#endif
}
//==============================================================================
void* getNativeHandle() const override { return hwnd; }
void setVisible (bool shouldBeVisible) override
{
ShowWindow (hwnd, shouldBeVisible ? SW_SHOWNA : SW_HIDE);
if (shouldBeVisible)
InvalidateRect (hwnd, 0, 0);
else
lastPaintTime = 0;
}
void setTitle (const String& title) override
{
// Unfortunately some ancient bits of win32 mean you can only perform this operation from the message thread.
jassert (MessageManager::getInstance()->isThisTheMessageThread());
SetWindowText (hwnd, title.toWideCharPointer());
}
void repaintNowIfTransparent()
{
if (isUsingUpdateLayeredWindow() && lastPaintTime > 0 && Time::getMillisecondCounter() > lastPaintTime + 30)
handlePaintMessage();
}
void updateBorderSize()
{
WINDOWINFO info;
info.cbSize = sizeof (info);
if (GetWindowInfo (hwnd, &info))
windowBorder = BorderSize<int> (info.rcClient.top - info.rcWindow.top,
info.rcClient.left - info.rcWindow.left,
info.rcWindow.bottom - info.rcClient.bottom,
info.rcWindow.right - info.rcClient.right);
#if JUCE_DIRECT2D
if (direct2DContext != nullptr)
direct2DContext->resized();
#endif
}
void setBounds (const Rectangle<int>& bounds, bool isNowFullScreen) override
{
fullScreen = isNowFullScreen;
Rectangle<int> newBounds (windowBorder.addedTo (bounds));
if (isUsingUpdateLayeredWindow())
{
if (HWND parentHwnd = GetParent (hwnd))
{
RECT parentRect = getWindowRect (parentHwnd);
newBounds.translate (parentRect.left, parentRect.top);
}
}
const Rectangle<int> oldBounds (getBounds());
const bool hasMoved = (oldBounds.getPosition() != bounds.getPosition());
const bool hasResized = (oldBounds.getWidth() != bounds.getWidth()
|| oldBounds.getHeight() != bounds.getHeight());
DWORD flags = SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOOWNERZORDER;
if (! hasMoved) flags |= SWP_NOMOVE;
if (! hasResized) flags |= SWP_NOSIZE;
setWindowPos (hwnd, newBounds, flags);
if (hasResized && isValidPeer (this))
{
updateBorderSize();
repaintNowIfTransparent();
}
}
Rectangle<int> getBounds() const override
{
Rectangle<int> bounds (rectangleFromRECT (getWindowRect (hwnd)));
if (HWND parentH = GetParent (hwnd))
{
RECT r = getWindowRect (parentH);
bounds.translate (-r.left, -r.top);
}
return windowBorder.subtractedFrom (bounds);
}
Point<int> getScreenPosition() const
{
RECT r = getWindowRect (hwnd);
return Point<int> (r.left + windowBorder.getLeft(),
r.top + windowBorder.getTop());
}
Point<float> localToGlobal (Point<float> relativePosition) override { return relativePosition + getScreenPosition().toFloat(); }
Point<float> globalToLocal (Point<float> screenPosition) override { return screenPosition - getScreenPosition().toFloat(); }
void setAlpha (float newAlpha) override
{
const uint8 intAlpha = (uint8) jlimit (0, 255, (int) (newAlpha * 255.0f));
if (component.isOpaque())
{
if (newAlpha < 1.0f)
{
SetWindowLong (hwnd, GWL_EXSTYLE, GetWindowLong (hwnd, GWL_EXSTYLE) | WS_EX_LAYERED);
SetLayeredWindowAttributes (hwnd, RGB (0, 0, 0), intAlpha, LWA_ALPHA);
}
else
{
SetWindowLong (hwnd, GWL_EXSTYLE, GetWindowLong (hwnd, GWL_EXSTYLE) & ~WS_EX_LAYERED);
RedrawWindow (hwnd, 0, 0, RDW_ERASE | RDW_INVALIDATE | RDW_FRAME | RDW_ALLCHILDREN);
}
}
else
{
updateLayeredWindowAlpha = intAlpha;
component.repaint();
}
}
void setMinimised (bool shouldBeMinimised) override
{
if (shouldBeMinimised != isMinimised())
ShowWindow (hwnd, shouldBeMinimised ? SW_MINIMIZE : SW_SHOWNORMAL);
}
bool isMinimised() const override
{
WINDOWPLACEMENT wp;
wp.length = sizeof (WINDOWPLACEMENT);
GetWindowPlacement (hwnd, &wp);
return wp.showCmd == SW_SHOWMINIMIZED;
}
void setFullScreen (bool shouldBeFullScreen) override
{
setMinimised (false);
if (isFullScreen() != shouldBeFullScreen)
{
fullScreen = shouldBeFullScreen;
const WeakReference<Component> deletionChecker (&component);
if (! fullScreen)
{
const Rectangle<int> boundsCopy (lastNonFullscreenBounds);
if (hasTitleBar())
ShowWindow (hwnd, SW_SHOWNORMAL);
if (! boundsCopy.isEmpty())
setBounds (ScalingHelpers::scaledScreenPosToUnscaled (component, boundsCopy), false);
}
else
{
if (hasTitleBar())
ShowWindow (hwnd, SW_SHOWMAXIMIZED);
else
SendMessageW (hwnd, WM_SETTINGCHANGE, 0, 0);
}
if (deletionChecker != nullptr)
handleMovedOrResized();
}
}
bool isFullScreen() const override
{
if (! hasTitleBar())
return fullScreen;
WINDOWPLACEMENT wp;
wp.length = sizeof (wp);
GetWindowPlacement (hwnd, &wp);
return wp.showCmd == SW_SHOWMAXIMIZED;
}
bool contains (Point<int> localPos, bool trueIfInAChildWindow) const override
{
RECT r = getWindowRect (hwnd);
if (! (isPositiveAndBelow (localPos.x, (int) (r.right - r.left))
&& isPositiveAndBelow (localPos.y, (int) (r.bottom - r.top))))
return false;
POINT p = { localPos.x + r.left + windowBorder.getLeft(),
localPos.y + r.top + windowBorder.getTop() };
HWND w = WindowFromPoint (p);
return w == hwnd || (trueIfInAChildWindow && (IsChild (hwnd, w) != 0));
}
BorderSize<int> getFrameSize() const override
{
return windowBorder;
}
bool setAlwaysOnTop (bool alwaysOnTop) override
{
const bool oldDeactivate = shouldDeactivateTitleBar;
shouldDeactivateTitleBar = ((styleFlags & windowIsTemporary) == 0);
setWindowZOrder (hwnd, alwaysOnTop ? HWND_TOPMOST : HWND_NOTOPMOST);
shouldDeactivateTitleBar = oldDeactivate;
if (shadower != nullptr)
handleBroughtToFront();
return true;
}
void toFront (bool makeActive) override
{
setMinimised (false);
const bool oldDeactivate = shouldDeactivateTitleBar;
shouldDeactivateTitleBar = ((styleFlags & windowIsTemporary) == 0);
callFunctionIfNotLocked (makeActive ? &toFrontCallback1 : &toFrontCallback2, hwnd);
shouldDeactivateTitleBar = oldDeactivate;
if (! makeActive)
{
// in this case a broughttofront call won't have occured, so do it now..
handleBroughtToFront();
}
}
void toBehind (ComponentPeer* other) override
{
if (HWNDComponentPeer* const otherPeer = dynamic_cast<HWNDComponentPeer*> (other))
{
setMinimised (false);
// Must be careful not to try to put a topmost window behind a normal one, or Windows
// promotes the normal one to be topmost!
if (component.isAlwaysOnTop() == otherPeer->getComponent().isAlwaysOnTop())
setWindowZOrder (hwnd, otherPeer->hwnd);
else if (otherPeer->getComponent().isAlwaysOnTop())
setWindowZOrder (hwnd, HWND_TOP);
}
else
{
jassertfalse; // wrong type of window?
}
}
bool isFocused() const override
{
return callFunctionIfNotLocked (&getFocusCallback, 0) == (void*) hwnd;
}
void grabFocus() override
{
const bool oldDeactivate = shouldDeactivateTitleBar;
shouldDeactivateTitleBar = ((styleFlags & windowIsTemporary) == 0);
callFunctionIfNotLocked (&setFocusCallback, hwnd);
shouldDeactivateTitleBar = oldDeactivate;
}
void textInputRequired (Point<int>, TextInputTarget&) override
{
if (! hasCreatedCaret)
{
hasCreatedCaret = true;
CreateCaret (hwnd, (HBITMAP) 1, 0, 0);
}
ShowCaret (hwnd);
SetCaretPos (0, 0);
}
void dismissPendingTextInput() override
{
imeHandler.handleSetContext (hwnd, false);
}
void repaint (const Rectangle<int>& area) override
{
const RECT r = { area.getX(), area.getY(), area.getRight(), area.getBottom() };
InvalidateRect (hwnd, &r, FALSE);
}
void performAnyPendingRepaintsNow() override
{
if (component.isVisible())
{
WeakReference<Component> localRef (&component);
MSG m;
if (isUsingUpdateLayeredWindow() || PeekMessage (&m, hwnd, WM_PAINT, WM_PAINT, PM_REMOVE))
if (localRef != nullptr) // (the PeekMessage call can dispatch messages, which may delete this comp)
handlePaintMessage();
}
}
//==============================================================================
static HWNDComponentPeer* getOwnerOfWindow (HWND h) noexcept
{
if (h != 0 && JuceWindowIdentifier::isJUCEWindow (h))
return (HWNDComponentPeer*) GetWindowLongPtr (h, 8);
return nullptr;
}
//==============================================================================
bool isInside (HWND h) const noexcept
{
return GetAncestor (hwnd, GA_ROOT) == h;
}
//==============================================================================
static bool isKeyDown (const int key) noexcept { return (GetAsyncKeyState (key) & 0x8000) != 0; }
static void updateKeyModifiers() noexcept
{
int keyMods = 0;
if (isKeyDown (VK_SHIFT)) keyMods |= ModifierKeys::shiftModifier;
if (isKeyDown (VK_CONTROL)) keyMods |= ModifierKeys::ctrlModifier;
if (isKeyDown (VK_MENU)) keyMods |= ModifierKeys::altModifier;
if (isKeyDown (VK_RMENU)) keyMods &= ~(ModifierKeys::ctrlModifier | ModifierKeys::altModifier);
currentModifiers = currentModifiers.withOnlyMouseButtons().withFlags (keyMods);
}
static void updateModifiersFromWParam (const WPARAM wParam)
{
int mouseMods = 0;
if (wParam & MK_LBUTTON) mouseMods |= ModifierKeys::leftButtonModifier;
if (wParam & MK_RBUTTON) mouseMods |= ModifierKeys::rightButtonModifier;
if (wParam & MK_MBUTTON) mouseMods |= ModifierKeys::middleButtonModifier;
currentModifiers = currentModifiers.withoutMouseButtons().withFlags (mouseMods);
updateKeyModifiers();
}
//==============================================================================
bool dontRepaint;
static ModifierKeys currentModifiers;
static ModifierKeys modifiersAtLastCallback;
//==============================================================================
class JuceDropTarget : public ComBaseClassHelper<IDropTarget>
{
public:
JuceDropTarget (HWNDComponentPeer& p) : ownerInfo (new OwnerInfo (p)) {}
void clear()
{
ownerInfo = nullptr;
}
JUCE_COMRESULT DragEnter (IDataObject* pDataObject, DWORD grfKeyState, POINTL mousePos, DWORD* pdwEffect)
{
HRESULT hr = updateFileList (pDataObject);
if (FAILED (hr))
return hr;
return DragOver (grfKeyState, mousePos, pdwEffect);
}
JUCE_COMRESULT DragLeave()
{
if (ownerInfo == nullptr)
return S_FALSE;
ownerInfo->owner.handleDragExit (ownerInfo->dragInfo);
return S_OK;
}
JUCE_COMRESULT DragOver (DWORD /*grfKeyState*/, POINTL mousePos, DWORD* pdwEffect)
{
if (ownerInfo == nullptr)
return S_FALSE;
ownerInfo->dragInfo.position = ownerInfo->getMousePos (mousePos).roundToInt();
const bool wasWanted = ownerInfo->owner.handleDragMove (ownerInfo->dragInfo);
*pdwEffect = wasWanted ? (DWORD) DROPEFFECT_COPY : (DWORD) DROPEFFECT_NONE;
return S_OK;
}
JUCE_COMRESULT Drop (IDataObject* pDataObject, DWORD /*grfKeyState*/, POINTL mousePos, DWORD* pdwEffect)
{
HRESULT hr = updateFileList (pDataObject);
if (SUCCEEDED (hr))
{
ownerInfo->dragInfo.position = ownerInfo->getMousePos (mousePos).roundToInt();
const bool wasWanted = ownerInfo->owner.handleDragDrop (ownerInfo->dragInfo);
*pdwEffect = wasWanted ? (DWORD) DROPEFFECT_COPY : (DWORD) DROPEFFECT_NONE;
hr = S_OK;
}
return hr;
}
private:
struct OwnerInfo
{
OwnerInfo (HWNDComponentPeer& p) : owner (p) {}
Point<float> getMousePos (const POINTL& mousePos) const
{
return owner.globalToLocal (Point<float> (static_cast<float> (mousePos.x),
static_cast<float> (mousePos.y)));
}
template <typename CharType>
void parseFileList (const CharType* names, const SIZE_T totalLen)
{
unsigned int i = 0;
for (;;)
{
unsigned int len = 0;
while (i + len < totalLen && names [i + len] != 0)
++len;
if (len == 0)
break;
dragInfo.files.add (String (names + i, len));
i += len + 1;
}
}
HWNDComponentPeer& owner;
ComponentPeer::DragInfo dragInfo;
JUCE_DECLARE_NON_COPYABLE (OwnerInfo)
};
ScopedPointer<OwnerInfo> ownerInfo;
struct DroppedData
{
DroppedData (IDataObject* const dataObject, const CLIPFORMAT type)
: data (nullptr)
{
FORMATETC format = { type, 0, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
STGMEDIUM resetMedium = { TYMED_HGLOBAL, { 0 }, 0 };
medium = resetMedium;
if (SUCCEEDED (error = dataObject->GetData (&format, &medium)))
{
dataSize = GlobalSize (medium.hGlobal);
data = GlobalLock (medium.hGlobal);
}
}
~DroppedData()
{
if (data != nullptr)
GlobalUnlock (medium.hGlobal);
}
HRESULT error;
STGMEDIUM medium;
void* data;
SIZE_T dataSize;
};
HRESULT updateFileList (IDataObject* const dataObject)
{
if (ownerInfo == nullptr)
return S_FALSE;
ownerInfo->dragInfo.clear();
DroppedData textData (dataObject, CF_UNICODETEXT);
if (SUCCEEDED (textData.error))
{
ownerInfo->dragInfo.text = String (CharPointer_UTF16 ((const WCHAR*) textData.data),
CharPointer_UTF16 ((const WCHAR*) addBytesToPointer (textData.data, textData.dataSize)));
}
else
{
DroppedData fileData (dataObject, CF_HDROP);
if (SUCCEEDED (fileData.error))
{
const LPDROPFILES dropFiles = static_cast<const LPDROPFILES> (fileData.data);
const void* const names = addBytesToPointer (dropFiles, sizeof (DROPFILES));
if (dropFiles->fWide)
ownerInfo->parseFileList (static_cast<const WCHAR*> (names), fileData.dataSize);
else
ownerInfo->parseFileList (static_cast<const char*> (names), fileData.dataSize);
}
else
{
return fileData.error;
}
}
return S_OK;
}
JUCE_DECLARE_NON_COPYABLE (JuceDropTarget)
};
#if JUCE_MODULE_AVAILABLE_juce_audio_plugin_client
static bool offerKeyMessageToJUCEWindow (MSG& m)
{
if (m.message == WM_KEYDOWN || m.message == WM_KEYUP)
if (Component::getCurrentlyFocusedComponent() != nullptr)
if (HWNDComponentPeer* h = getOwnerOfWindow (m.hwnd))
if (m.message == WM_KEYDOWN ? h->doKeyDown (m.wParam)
: h->doKeyUp (m.wParam))
return true;
return false;
}
#endif
private:
HWND hwnd, parentToAddTo;
ScopedPointer<DropShadower> shadower;
RenderingEngineType currentRenderingEngine;
#if JUCE_DIRECT2D
ScopedPointer<Direct2DLowLevelGraphicsContext> direct2DContext;
#endif
uint32 lastPaintTime;
ULONGLONG lastMagnifySize;
bool fullScreen, isDragging, isMouseOver, hasCreatedCaret, constrainerIsResizing;
BorderSize<int> windowBorder;
HICON currentWindowIcon;
JuceDropTarget* dropTarget;
uint8 updateLayeredWindowAlpha;
MultiTouchMapper<DWORD> currentTouches;
//==============================================================================
class TemporaryImage : public Timer
{
public:
TemporaryImage() {}
Image& getImage (const bool transparent, const int w, const int h)
{
const Image::PixelFormat format = transparent ? Image::ARGB : Image::RGB;
if ((! image.isValid()) || image.getWidth() < w || image.getHeight() < h || image.getFormat() != format)
image = Image (new WindowsBitmapImage (format, (w + 31) & ~31, (h + 31) & ~31, false));
startTimer (3000);
return image;
}
void timerCallback() override
{
stopTimer();
image = Image::null;
}
private:
Image image;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (TemporaryImage)
};
TemporaryImage offscreenImageGenerator;
//==============================================================================
class WindowClassHolder : private DeletedAtShutdown
{
public:
WindowClassHolder()
{
// this name has to be different for each app/dll instance because otherwise poor old Windows can
// get a bit confused (even despite it not being a process-global window class).
String windowClassName ("JUCE_");
windowClassName << String::toHexString (Time::currentTimeMillis());
HINSTANCE moduleHandle = (HINSTANCE) Process::getCurrentModuleInstanceHandle();
TCHAR moduleFile [1024] = { 0 };
GetModuleFileName (moduleHandle, moduleFile, 1024);
WORD iconNum = 0;
WNDCLASSEX wcex = { 0 };
wcex.cbSize = sizeof (wcex);
wcex.style = CS_OWNDC;
wcex.lpfnWndProc = (WNDPROC) windowProc;
wcex.lpszClassName = windowClassName.toWideCharPointer();
wcex.cbWndExtra = 32;
wcex.hInstance = moduleHandle;
wcex.hIcon = ExtractAssociatedIcon (moduleHandle, moduleFile, &iconNum);
iconNum = 1;
wcex.hIconSm = ExtractAssociatedIcon (moduleHandle, moduleFile, &iconNum);
atom = RegisterClassEx (&wcex);
jassert (atom != 0);
isEventBlockedByModalComps = checkEventBlockedByModalComps;
}
~WindowClassHolder()
{
if (ComponentPeer::getNumPeers() == 0)
UnregisterClass (getWindowClassName(), (HINSTANCE) Process::getCurrentModuleInstanceHandle());
clearSingletonInstance();
}
LPCTSTR getWindowClassName() const noexcept { return (LPCTSTR) atom; }
juce_DeclareSingleton_SingleThreaded_Minimal (WindowClassHolder)
private:
ATOM atom;
static bool isHWNDBlockedByModalComponents (HWND h)
{
for (int i = Desktop::getInstance().getNumComponents(); --i >= 0;)
if (Component* const c = Desktop::getInstance().getComponent (i))
if ((! c->isCurrentlyBlockedByAnotherModalComponent())
&& IsChild ((HWND) c->getWindowHandle(), h))
return false;
return true;
}
static bool checkEventBlockedByModalComps (const MSG& m)
{
if (Component::getNumCurrentlyModalComponents() == 0 || JuceWindowIdentifier::isJUCEWindow (m.hwnd))
return false;
switch (m.message)
{
case WM_MOUSEMOVE:
case WM_NCMOUSEMOVE:
case 0x020A: /* WM_MOUSEWHEEL */
case 0x020E: /* WM_MOUSEHWHEEL */
case WM_KEYUP:
case WM_SYSKEYUP:
case WM_CHAR:
case WM_APPCOMMAND:
case WM_LBUTTONUP:
case WM_MBUTTONUP:
case WM_RBUTTONUP:
case WM_MOUSEACTIVATE:
case WM_NCMOUSEHOVER:
case WM_MOUSEHOVER:
case WM_TOUCH:
return isHWNDBlockedByModalComponents (m.hwnd);
case WM_NCLBUTTONDOWN:
case WM_NCLBUTTONDBLCLK:
case WM_NCRBUTTONDOWN:
case WM_NCRBUTTONDBLCLK:
case WM_NCMBUTTONDOWN:
case WM_NCMBUTTONDBLCLK:
case WM_LBUTTONDOWN:
case WM_LBUTTONDBLCLK:
case WM_MBUTTONDOWN:
case WM_MBUTTONDBLCLK:
case WM_RBUTTONDOWN:
case WM_RBUTTONDBLCLK:
case WM_KEYDOWN:
case WM_SYSKEYDOWN:
if (isHWNDBlockedByModalComponents (m.hwnd))
{
if (Component* const modal = Component::getCurrentlyModalComponent (0))
modal->inputAttemptWhenModal();
return true;
}
break;
default:
break;
}
return false;
}
JUCE_DECLARE_NON_COPYABLE (WindowClassHolder)
};
//==============================================================================
static void* createWindowCallback (void* userData)
{
static_cast<HWNDComponentPeer*> (userData)->createWindow();
return nullptr;
}
void createWindow()
{
DWORD exstyle = 0;
DWORD type = WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
if (hasTitleBar())
{
type |= WS_OVERLAPPED;
if ((styleFlags & windowHasCloseButton) != 0)
{
type |= WS_SYSMENU;
}
else
{
// annoyingly, windows won't let you have a min/max button without a close button
jassert ((styleFlags & (windowHasMinimiseButton | windowHasMaximiseButton)) == 0);
}
if ((styleFlags & windowIsResizable) != 0)
type |= WS_THICKFRAME;
}
else if (parentToAddTo != 0)
{
type |= WS_CHILD;
}
else
{
type |= WS_POPUP | WS_SYSMENU;
}
if ((styleFlags & windowAppearsOnTaskbar) == 0)
exstyle |= WS_EX_TOOLWINDOW;
else
exstyle |= WS_EX_APPWINDOW;
if ((styleFlags & windowHasMinimiseButton) != 0) type |= WS_MINIMIZEBOX;
if ((styleFlags & windowHasMaximiseButton) != 0) type |= WS_MAXIMIZEBOX;
if ((styleFlags & windowIgnoresMouseClicks) != 0) exstyle |= WS_EX_TRANSPARENT;
if ((styleFlags & windowIsSemiTransparent) != 0 && Desktop::canUseSemiTransparentWindows())
exstyle |= WS_EX_LAYERED;
hwnd = CreateWindowEx (exstyle, WindowClassHolder::getInstance()->getWindowClassName(),
L"", type, 0, 0, 0, 0, parentToAddTo, 0,
(HINSTANCE) Process::getCurrentModuleInstanceHandle(), 0);
if (hwnd != 0)
{
SetWindowLongPtr (hwnd, 0, 0);
SetWindowLongPtr (hwnd, 8, (LONG_PTR) this);
JuceWindowIdentifier::setAsJUCEWindow (hwnd, true);
if (dropTarget == nullptr)
{
HWNDComponentPeer* peer = nullptr;
if (dontRepaint)
peer = getOwnerOfWindow (parentToAddTo);
if (peer == nullptr)
peer = this;
dropTarget = new JuceDropTarget (*peer);
}
RegisterDragDrop (hwnd, dropTarget);
if (canUseMultiTouch())
registerTouchWindow (hwnd, 0);
setDPIAwareness();
setMessageFilter();
updateBorderSize();
// Calling this function here is (for some reason) necessary to make Windows
// correctly enable the menu items that we specify in the wm_initmenu message.
GetSystemMenu (hwnd, false);
const float alpha = component.getAlpha();
if (alpha < 1.0f)
setAlpha (alpha);
}
else
{
jassertfalse;
}
}
static void* destroyWindowCallback (void* handle)
{
RevokeDragDrop ((HWND) handle);
DestroyWindow ((HWND) handle);
return nullptr;
}
static void* toFrontCallback1 (void* h)
{
SetForegroundWindow ((HWND) h);
return nullptr;
}
static void* toFrontCallback2 (void* h)
{
setWindowZOrder ((HWND) h, HWND_TOP);
return nullptr;
}
static void* setFocusCallback (void* h)
{
SetFocus ((HWND) h);
return nullptr;
}
static void* getFocusCallback (void*)
{
return GetFocus();
}
bool isUsingUpdateLayeredWindow() const
{
return ! component.isOpaque();
}
bool hasTitleBar() const noexcept { return (styleFlags & windowHasTitleBar) != 0; }
void setIcon (const Image& newIcon)
{
HICON hicon = IconConverters::createHICONFromImage (newIcon, TRUE, 0, 0);
if (hicon != 0)
{
SendMessage (hwnd, WM_SETICON, ICON_BIG, (LPARAM) hicon);
SendMessage (hwnd, WM_SETICON, ICON_SMALL, (LPARAM) hicon);
if (currentWindowIcon != 0)
DestroyIcon (currentWindowIcon);
currentWindowIcon = hicon;
}
}
void setMessageFilter()
{
typedef BOOL (WINAPI* ChangeWindowMessageFilterExFunc) (HWND, UINT, DWORD, PVOID);
if (ChangeWindowMessageFilterExFunc changeMessageFilter
= (ChangeWindowMessageFilterExFunc) getUser32Function ("ChangeWindowMessageFilterEx"))
{
changeMessageFilter (hwnd, WM_DROPFILES, 1 /*MSGFLT_ALLOW*/, nullptr);
changeMessageFilter (hwnd, WM_COPYDATA, 1 /*MSGFLT_ALLOW*/, nullptr);
changeMessageFilter (hwnd, 0x49, 1 /*MSGFLT_ALLOW*/, nullptr);
}
}
struct ChildWindowClippingInfo
{
HDC dc;
HWNDComponentPeer* peer;
RectangleList<int>* clip;
Point<int> origin;
int savedDC;
};
static BOOL CALLBACK clipChildWindowCallback (HWND hwnd, LPARAM context)
{
if (IsWindowVisible (hwnd))
{
ChildWindowClippingInfo& info = *(ChildWindowClippingInfo*) context;
HWND parent = GetParent (hwnd);
if (parent == info.peer->hwnd)
{
RECT r = getWindowRect (hwnd);
POINT pos = { r.left, r.top };
ScreenToClient (GetParent (hwnd), &pos);
Rectangle<int> clip (Rectangle<int> (pos.x, pos.y,
r.right - r.left,
r.bottom - r.top));
info.clip->subtract (clip - info.origin);
if (info.savedDC == 0)
info.savedDC = SaveDC (info.dc);
ExcludeClipRect (info.dc, clip.getX(), clip.getY(), clip.getRight(), clip.getBottom());
}
}
return TRUE;
}
//==============================================================================
void handlePaintMessage()
{
#if JUCE_DIRECT2D
if (direct2DContext != nullptr)
{
RECT r;
if (GetUpdateRect (hwnd, &r, false))
{
direct2DContext->start();
direct2DContext->clipToRectangle (rectangleFromRECT (r));
handlePaint (*direct2DContext);
direct2DContext->end();
}
}
else
#endif
HRGN rgn = CreateRectRgn (0, 0, 0, 0);
const int regionType = GetUpdateRgn (hwnd, rgn, false);
PAINTSTRUCT paintStruct;
HDC dc = BeginPaint (hwnd, &paintStruct); // Note this can immediately generate a WM_NCPAINT
// message and become re-entrant, but that's OK
// if something in a paint handler calls, e.g. a message box, this can become reentrant and
// corrupt the image it's using to paint into, so do a check here.
static bool reentrant = false;
if (! reentrant)
{
const ScopedValueSetter<bool> setter (reentrant, true, false);
if (dontRepaint)
component.handleCommandMessage (0); // (this triggers a repaint in the openGL context)
else
performPaint (dc, rgn, regionType, paintStruct);
}
DeleteObject (rgn);
EndPaint (hwnd, &paintStruct);
#ifndef JUCE_GCC
_fpreset(); // because some graphics cards can unmask FP exceptions
#endif
lastPaintTime = Time::getMillisecondCounter();
}
void performPaint (HDC dc, HRGN rgn, int regionType, PAINTSTRUCT& paintStruct)
{
int x = paintStruct.rcPaint.left;
int y = paintStruct.rcPaint.top;
int w = paintStruct.rcPaint.right - x;
int h = paintStruct.rcPaint.bottom - y;
const bool transparent = isUsingUpdateLayeredWindow();
if (transparent)
{
// it's not possible to have a transparent window with a title bar at the moment!
jassert (! hasTitleBar());
RECT r = getWindowRect (hwnd);
x = y = 0;
w = r.right - r.left;
h = r.bottom - r.top;
}
if (w > 0 && h > 0)
{
Image& offscreenImage = offscreenImageGenerator.getImage (transparent, w, h);
RectangleList<int> contextClip;
const Rectangle<int> clipBounds (w, h);
bool needToPaintAll = true;
if (regionType == COMPLEXREGION && ! transparent)
{
HRGN clipRgn = CreateRectRgnIndirect (&paintStruct.rcPaint);
CombineRgn (rgn, rgn, clipRgn, RGN_AND);
DeleteObject (clipRgn);
char rgnData [8192];
const DWORD res = GetRegionData (rgn, sizeof (rgnData), (RGNDATA*) rgnData);
if (res > 0 && res <= sizeof (rgnData))
{
const RGNDATAHEADER* const hdr = &(((const RGNDATA*) rgnData)->rdh);
if (hdr->iType == RDH_RECTANGLES
&& hdr->rcBound.right - hdr->rcBound.left >= w
&& hdr->rcBound.bottom - hdr->rcBound.top >= h)
{
needToPaintAll = false;
const RECT* rects = (const RECT*) (rgnData + sizeof (RGNDATAHEADER));
for (int i = (int) ((RGNDATA*) rgnData)->rdh.nCount; --i >= 0;)
{
if (rects->right <= x + w && rects->bottom <= y + h)
{
const int cx = jmax (x, (int) rects->left);
contextClip.addWithoutMerging (Rectangle<int> (cx - x, rects->top - y,
rects->right - cx, rects->bottom - rects->top)
.getIntersection (clipBounds));
}
else
{
needToPaintAll = true;
break;
}
++rects;
}
}
}
}
if (needToPaintAll)
{
contextClip.clear();
contextClip.addWithoutMerging (Rectangle<int> (w, h));
}
ChildWindowClippingInfo childClipInfo = { dc, this, &contextClip, Point<int> (x, y), 0 };
EnumChildWindows (hwnd, clipChildWindowCallback, (LPARAM) &childClipInfo);
if (! contextClip.isEmpty())
{
if (transparent)
for (const Rectangle<int>* i = contextClip.begin(), * const e = contextClip.end(); i != e; ++i)
offscreenImage.clear (*i);
// if the component's not opaque, this won't draw properly unless the platform can support this
jassert (Desktop::canUseSemiTransparentWindows() || component.isOpaque());
{
ScopedPointer<LowLevelGraphicsContext> context (component.getLookAndFeel()
.createGraphicsContext (offscreenImage, Point<int> (-x, -y), contextClip));
handlePaint (*context);
}
static_cast<WindowsBitmapImage*> (offscreenImage.getPixelData())
->blitToWindow (hwnd, dc, transparent, x, y, updateLayeredWindowAlpha);
}
if (childClipInfo.savedDC != 0)
RestoreDC (dc, childClipInfo.savedDC);
}
}
//==============================================================================
void doMouseEvent (Point<float> position)
{
handleMouseEvent (0, position, currentModifiers, getMouseEventTime());
}
StringArray getAvailableRenderingEngines() override
{
StringArray s ("Software Renderer");
#if JUCE_DIRECT2D
if (SystemStats::getOperatingSystemType() >= SystemStats::Windows7)
s.add ("Direct2D");
#endif
return s;
}
int getCurrentRenderingEngine() const override { return currentRenderingEngine; }
#if JUCE_DIRECT2D
void updateDirect2DContext()
{
if (currentRenderingEngine != direct2DRenderingEngine)
direct2DContext = 0;
else if (direct2DContext == 0)
direct2DContext = new Direct2DLowLevelGraphicsContext (hwnd);
}
#endif
void setCurrentRenderingEngine (int index) override
{
(void) index;
#if JUCE_DIRECT2D
if (getAvailableRenderingEngines().size() > 1)
{
currentRenderingEngine = index == 1 ? direct2DRenderingEngine : softwareRenderingEngine;
updateDirect2DContext();
repaint (component.getLocalBounds());
}
#endif
}
static int getMinTimeBetweenMouseMoves()
{
if (SystemStats::getOperatingSystemType() >= SystemStats::WinVista)
return 0;
return 1000 / 60; // Throttling the incoming mouse-events seems to still be needed in XP..
}
void doMouseMove (Point<float> position)
{
if (! isMouseOver)
{
isMouseOver = true;
ModifierKeys::getCurrentModifiersRealtime(); // (This avoids a rare stuck-button problem when focus is lost unexpectedly)
updateKeyModifiers();
TRACKMOUSEEVENT tme;
tme.cbSize = sizeof (tme);
tme.dwFlags = TME_LEAVE;
tme.hwndTrack = hwnd;
tme.dwHoverTime = 0;
if (! TrackMouseEvent (&tme))
jassertfalse;
Desktop::getInstance().getMainMouseSource().forceMouseCursorUpdate();
}
else if (! isDragging)
{
if (! contains (position.roundToInt(), false))
return;
}
static uint32 lastMouseTime = 0;
static int minTimeBetweenMouses = getMinTimeBetweenMouseMoves();
const uint32 now = Time::getMillisecondCounter();
if (now >= lastMouseTime + minTimeBetweenMouses)
{
lastMouseTime = now;
doMouseEvent (position);
}
}
void doMouseDown (Point<float> position, const WPARAM wParam)
{
if (GetCapture() != hwnd)
SetCapture (hwnd);
doMouseMove (position);
if (isValidPeer (this))
{
updateModifiersFromWParam (wParam);
isDragging = true;
doMouseEvent (position);
}
}
void doMouseUp (Point<float> position, const WPARAM wParam)
{
updateModifiersFromWParam (wParam);
const bool wasDragging = isDragging;
isDragging = false;
// release the mouse capture if the user has released all buttons
if ((wParam & (MK_LBUTTON | MK_RBUTTON | MK_MBUTTON)) == 0 && hwnd == GetCapture())
ReleaseCapture();
// NB: under some circumstances (e.g. double-clicking a native title bar), a mouse-up can
// arrive without a mouse-down, so in that case we need to avoid sending a message.
if (wasDragging)
doMouseEvent (position);
}
void doCaptureChanged()
{
if (constrainerIsResizing)
{
if (constrainer != nullptr)
constrainer->resizeEnd();
constrainerIsResizing = false;
}
if (isDragging)
doMouseUp (getCurrentMousePos(), (WPARAM) 0);
}
void doMouseExit()
{
isMouseOver = false;
doMouseEvent (getCurrentMousePos());
}
ComponentPeer* findPeerUnderMouse (Point<float>& localPos)
{
const Point<int> globalPos (getCurrentMousePosGlobal().roundToInt());
// Because Windows stupidly sends all wheel events to the window with the keyboard
// focus, we have to redirect them here according to the mouse pos..
POINT p = { globalPos.x, globalPos.y };
HWNDComponentPeer* peer = getOwnerOfWindow (WindowFromPoint (p));
if (peer == nullptr)
peer = this;
localPos = peer->globalToLocal (globalPos.toFloat());
return peer;
}
void doMouseWheel (const WPARAM wParam, const bool isVertical)
{
updateKeyModifiers();
const float amount = jlimit (-1000.0f, 1000.0f, 0.5f * (short) HIWORD (wParam));
MouseWheelDetails wheel;
wheel.deltaX = isVertical ? 0.0f : amount / -256.0f;
wheel.deltaY = isVertical ? amount / 256.0f : 0.0f;
wheel.isReversed = false;
wheel.isSmooth = false;
wheel.isInertial = false;
Point<float> localPos;
if (ComponentPeer* const peer = findPeerUnderMouse (localPos))
peer->handleMouseWheel (0, localPos, getMouseEventTime(), wheel);
}
bool doGestureEvent (LPARAM lParam)
{
GESTUREINFO gi;
zerostruct (gi);
gi.cbSize = sizeof (gi);
if (getGestureInfo != nullptr && getGestureInfo ((HGESTUREINFO) lParam, &gi))
{
updateKeyModifiers();
Point<float> localPos;
if (ComponentPeer* const peer = findPeerUnderMouse (localPos))
{
switch (gi.dwID)
{
case 3: /*GID_ZOOM*/
if (gi.dwFlags != 1 /*GF_BEGIN*/ && lastMagnifySize > 0)
peer->handleMagnifyGesture (0, localPos, getMouseEventTime(),
(float) (gi.ullArguments / (double) lastMagnifySize));
lastMagnifySize = gi.ullArguments;
return true;
case 4: /*GID_PAN*/
case 5: /*GID_ROTATE*/
case 6: /*GID_TWOFINGERTAP*/
case 7: /*GID_PRESSANDTAP*/
default:
break;
}
}
}
return false;
}
LRESULT doTouchEvent (const int numInputs, HTOUCHINPUT eventHandle)
{
if ((styleFlags & windowIgnoresMouseClicks) != 0)
if (HWNDComponentPeer* const parent = getOwnerOfWindow (GetParent (hwnd)))
if (parent != this)
return parent->doTouchEvent (numInputs, eventHandle);
HeapBlock<TOUCHINPUT> inputInfo (numInputs);
if (getTouchInputInfo (eventHandle, numInputs, inputInfo, sizeof (TOUCHINPUT)))
{
for (int i = 0; i < numInputs; ++i)
{
const DWORD flags = inputInfo[i].dwFlags;
if ((flags & (TOUCHEVENTF_DOWN | TOUCHEVENTF_MOVE | TOUCHEVENTF_UP)) != 0)
if (! handleTouchInput (inputInfo[i], (flags & TOUCHEVENTF_PRIMARY) != 0,
(flags & TOUCHEVENTF_DOWN) != 0, (flags & TOUCHEVENTF_UP) != 0))
return 0; // abandon method if this window was deleted by the callback
}
}
closeTouchInputHandle (eventHandle);
return 0;
}
bool handleTouchInput (const TOUCHINPUT& touch, const bool isPrimary, const bool isDown, const bool isUp)
{
bool isCancel = false;
const int touchIndex = currentTouches.getIndexOfTouch (touch.dwID);
const int64 time = getMouseEventTime();
const Point<float> pos (globalToLocal (Point<float> (static_cast<float> (TOUCH_COORD_TO_PIXEL (touch.x)),
static_cast<float> (TOUCH_COORD_TO_PIXEL (touch.y)))));
ModifierKeys modsToSend (currentModifiers);
if (isDown)
{
currentModifiers = currentModifiers.withoutMouseButtons().withFlags (ModifierKeys::leftButtonModifier);
modsToSend = currentModifiers;
if (! isPrimary)
{
// this forces a mouse-enter/up event, in case for some reason we didn't get a mouse-up before.
handleMouseEvent (touchIndex, pos.toFloat(), modsToSend.withoutMouseButtons(), time);
if (! isValidPeer (this)) // (in case this component was deleted by the event)
return false;
}
}
else if (isUp)
{
modsToSend = modsToSend.withoutMouseButtons();
currentTouches.clearTouch (touchIndex);
if (! currentTouches.areAnyTouchesActive())
isCancel = true;
}
else
{
modsToSend = currentModifiers.withoutMouseButtons().withFlags (ModifierKeys::leftButtonModifier);
}
if (isCancel)
{
currentTouches.clear();
currentModifiers = currentModifiers.withoutMouseButtons();
}
if (! isPrimary)
{
handleMouseEvent (touchIndex, pos.toFloat(), modsToSend, time);
if (! isValidPeer (this)) // (in case this component was deleted by the event)
return false;
}
if ((isUp || isCancel) && ! isPrimary)
{
handleMouseEvent (touchIndex, Point<float> (-10.0f, -10.0f), currentModifiers, time);
if (! isValidPeer (this))
return false;
}
return true;
}
//==============================================================================
void sendModifierKeyChangeIfNeeded()
{
if (modifiersAtLastCallback != currentModifiers)
{
modifiersAtLastCallback = currentModifiers;
handleModifierKeysChange();
}
}
bool doKeyUp (const WPARAM key)
{
updateKeyModifiers();
switch (key)
{
case VK_SHIFT:
case VK_CONTROL:
case VK_MENU:
case VK_CAPITAL:
case VK_LWIN:
case VK_RWIN:
case VK_APPS:
case VK_NUMLOCK:
case VK_SCROLL:
case VK_LSHIFT:
case VK_RSHIFT:
case VK_LCONTROL:
case VK_LMENU:
case VK_RCONTROL:
case VK_RMENU:
sendModifierKeyChangeIfNeeded();
}
return handleKeyUpOrDown (false)
|| Component::getCurrentlyModalComponent() != nullptr;
}
bool doKeyDown (const WPARAM key)
{
updateKeyModifiers();
bool used = false;
switch (key)
{
case VK_SHIFT:
case VK_LSHIFT:
case VK_RSHIFT:
case VK_CONTROL:
case VK_LCONTROL:
case VK_RCONTROL:
case VK_MENU:
case VK_LMENU:
case VK_RMENU:
case VK_LWIN:
case VK_RWIN:
case VK_CAPITAL:
case VK_NUMLOCK:
case VK_SCROLL:
case VK_APPS:
sendModifierKeyChangeIfNeeded();
break;
case VK_LEFT:
case VK_RIGHT:
case VK_UP:
case VK_DOWN:
case VK_PRIOR:
case VK_NEXT:
case VK_HOME:
case VK_END:
case VK_DELETE:
case VK_INSERT:
case VK_F1:
case VK_F2:
case VK_F3:
case VK_F4:
case VK_F5:
case VK_F6:
case VK_F7:
case VK_F8:
case VK_F9:
case VK_F10:
case VK_F11:
case VK_F12:
case VK_F13:
case VK_F14:
case VK_F15:
case VK_F16:
used = handleKeyUpOrDown (true);
used = handleKeyPress (extendedKeyModifier | (int) key, 0) || used;
break;
default:
used = handleKeyUpOrDown (true);
{
MSG msg;
if (! PeekMessage (&msg, hwnd, WM_CHAR, WM_DEADCHAR, PM_NOREMOVE))
{
// if there isn't a WM_CHAR or WM_DEADCHAR message pending, we need to
// manually generate the key-press event that matches this key-down.
const UINT keyChar = MapVirtualKey ((UINT) key, 2);
const UINT scanCode = MapVirtualKey ((UINT) key, 0);
BYTE keyState[256];
GetKeyboardState (keyState);
WCHAR text[16] = { 0 };
if (ToUnicode ((UINT) key, scanCode, keyState, text, 8, 0) != 1)
text[0] = 0;
used = handleKeyPress ((int) LOWORD (keyChar), (juce_wchar) text[0]) || used;
}
}
break;
}
return used || (Component::getCurrentlyModalComponent() != nullptr);
}
bool doKeyChar (int key, const LPARAM flags)
{
updateKeyModifiers();
juce_wchar textChar = (juce_wchar) key;
const int virtualScanCode = (flags >> 16) & 0xff;
if (key >= '0' && key <= '9')
{
switch (virtualScanCode) // check for a numeric keypad scan-code
{
case 0x52:
case 0x4f:
case 0x50:
case 0x51:
case 0x4b:
case 0x4c:
case 0x4d:
case 0x47:
case 0x48:
case 0x49:
key = (key - '0') + KeyPress::numberPad0;
break;
default:
break;
}
}
else
{
// convert the scan code to an unmodified character code..
const UINT virtualKey = MapVirtualKey ((UINT) virtualScanCode, 1);
UINT keyChar = MapVirtualKey (virtualKey, 2);
keyChar = LOWORD (keyChar);
if (keyChar != 0)
key = (int) keyChar;
// avoid sending junk text characters for some control-key combinations
if (textChar < ' ' && currentModifiers.testFlags (ModifierKeys::ctrlModifier | ModifierKeys::altModifier))
textChar = 0;
}
return handleKeyPress (key, textChar);
}
void forwardMessageToParent (UINT message, WPARAM wParam, LPARAM lParam) const
{
if (HWND parentH = GetParent (hwnd))
PostMessage (parentH, message, wParam, lParam);
}
bool doAppCommand (const LPARAM lParam)
{
int key = 0;
switch (GET_APPCOMMAND_LPARAM (lParam))
{
case APPCOMMAND_MEDIA_PLAY_PAUSE: key = KeyPress::playKey; break;
case APPCOMMAND_MEDIA_STOP: key = KeyPress::stopKey; break;
case APPCOMMAND_MEDIA_NEXTTRACK: key = KeyPress::fastForwardKey; break;
case APPCOMMAND_MEDIA_PREVIOUSTRACK: key = KeyPress::rewindKey; break;
default: break;
}
if (key != 0)
{
updateKeyModifiers();
if (hwnd == GetActiveWindow())
{
handleKeyPress (key, 0);
return true;
}
}
return false;
}
bool isConstrainedNativeWindow() const
{
return constrainer != nullptr
&& (styleFlags & (windowHasTitleBar | windowIsResizable)) == (windowHasTitleBar | windowIsResizable)
&& ! isKioskMode();
}
Rectangle<int> getCurrentScaledBounds (float scale) const
{
return ScalingHelpers::unscaledScreenPosToScaled (scale, windowBorder.addedTo (ScalingHelpers::scaledScreenPosToUnscaled (scale, component.getBounds())));
}
LRESULT handleSizeConstraining (RECT& r, const WPARAM wParam)
{
if (isConstrainedNativeWindow())
{
const float scale = getComponent().getDesktopScaleFactor();
Rectangle<int> pos (ScalingHelpers::unscaledScreenPosToScaled (scale, rectangleFromRECT (r)));
const Rectangle<int> current (getCurrentScaledBounds (scale));
constrainer->checkBounds (pos, current,
Desktop::getInstance().getDisplays().getTotalBounds (true),
wParam == WMSZ_TOP || wParam == WMSZ_TOPLEFT || wParam == WMSZ_TOPRIGHT,
wParam == WMSZ_LEFT || wParam == WMSZ_TOPLEFT || wParam == WMSZ_BOTTOMLEFT,
wParam == WMSZ_BOTTOM || wParam == WMSZ_BOTTOMLEFT || wParam == WMSZ_BOTTOMRIGHT,
wParam == WMSZ_RIGHT || wParam == WMSZ_TOPRIGHT || wParam == WMSZ_BOTTOMRIGHT);
pos = ScalingHelpers::scaledScreenPosToUnscaled (scale, pos);
r.left = pos.getX();
r.top = pos.getY();
r.right = pos.getRight();
r.bottom = pos.getBottom();
}
return TRUE;
}
LRESULT handlePositionChanging (WINDOWPOS& wp)
{
if (isConstrainedNativeWindow())
{
if ((wp.flags & (SWP_NOMOVE | SWP_NOSIZE)) != (SWP_NOMOVE | SWP_NOSIZE)
&& ! Component::isMouseButtonDownAnywhere())
{
const float scale = getComponent().getDesktopScaleFactor();
Rectangle<int> pos (ScalingHelpers::unscaledScreenPosToScaled (scale, Rectangle<int> (wp.x, wp.y, wp.cx, wp.cy)));
const Rectangle<int> current (getCurrentScaledBounds (scale));
constrainer->checkBounds (pos, current,
Desktop::getInstance().getDisplays().getTotalBounds (true),
pos.getY() != current.getY() && pos.getBottom() == current.getBottom(),
pos.getX() != current.getX() && pos.getRight() == current.getRight(),
pos.getY() == current.getY() && pos.getBottom() != current.getBottom(),
pos.getX() == current.getX() && pos.getRight() != current.getRight());
pos = ScalingHelpers::scaledScreenPosToUnscaled (scale, pos);
wp.x = pos.getX();
wp.y = pos.getY();
wp.cx = pos.getWidth();
wp.cy = pos.getHeight();
}
}
if (((wp.flags & SWP_SHOWWINDOW) != 0 && ! component.isVisible()))
component.setVisible (true);
else if (((wp.flags & SWP_HIDEWINDOW) != 0 && component.isVisible()))
component.setVisible (false);
return 0;
}
bool handlePositionChanged()
{
const Point<float> pos (getCurrentMousePos());
if (contains (pos.roundToInt(), false))
{
doMouseEvent (pos);
if (! isValidPeer (this))
return true;
}
handleMovedOrResized();
return ! dontRepaint; // to allow non-accelerated openGL windows to draw themselves correctly..
}
void handleAppActivation (const WPARAM wParam)
{
modifiersAtLastCallback = -1;
updateKeyModifiers();
if (isMinimised())
{
component.repaint();
handleMovedOrResized();
if (! isValidPeer (this))
return;
}
Component* underMouse = component.getComponentAt (component.getMouseXYRelative());
if (underMouse == nullptr)
underMouse = &component;
if (underMouse->isCurrentlyBlockedByAnotherModalComponent())
{
if (LOWORD (wParam) == WA_CLICKACTIVE)
Component::getCurrentlyModalComponent()->inputAttemptWhenModal();
else
ModalComponentManager::getInstance()->bringModalComponentsToFront();
}
else
{
handleBroughtToFront();
}
}
void handlePowerBroadcast (WPARAM wParam)
{
if (JUCEApplicationBase* const app = JUCEApplicationBase::getInstance())
{
switch (wParam)
{
case PBT_APMSUSPEND: app->suspended(); break;
case PBT_APMQUERYSUSPENDFAILED:
case PBT_APMRESUMECRITICAL:
case PBT_APMRESUMESUSPEND:
case PBT_APMRESUMEAUTOMATIC: app->resumed(); break;
default: break;
}
}
}
void handleLeftClickInNCArea (WPARAM wParam)
{
if (! sendInputAttemptWhenModalMessage())
{
switch (wParam)
{
case HTBOTTOM:
case HTBOTTOMLEFT:
case HTBOTTOMRIGHT:
case HTGROWBOX:
case HTLEFT:
case HTRIGHT:
case HTTOP:
case HTTOPLEFT:
case HTTOPRIGHT:
if (isConstrainedNativeWindow())
{
constrainerIsResizing = true;
constrainer->resizeStart();
}
break;
default:
break;
}
}
}
void initialiseSysMenu (HMENU menu) const
{
if (! hasTitleBar())
{
if (isFullScreen())
{
EnableMenuItem (menu, SC_RESTORE, MF_BYCOMMAND | MF_ENABLED);
EnableMenuItem (menu, SC_MOVE, MF_BYCOMMAND | MF_GRAYED);
}
else if (! isMinimised())
{
EnableMenuItem (menu, SC_MAXIMIZE, MF_BYCOMMAND | MF_GRAYED);
}
}
}
void doSettingChange()
{
Desktop& desktop = Desktop::getInstance();
const_cast<Desktop::Displays&> (desktop.getDisplays()).refresh();
if (fullScreen && ! isMinimised())
{
const Desktop::Displays::Display& display
= desktop.getDisplays().getDisplayContaining (component.getScreenBounds().getCentre());
setWindowPos (hwnd, display.userArea * display.scale,
SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOZORDER | SWP_NOSENDCHANGING);
}
}
void handleDPIChange() // happens when a window moves to a screen with a different DPI.
{
}
//==============================================================================
public:
static LRESULT CALLBACK windowProc (HWND h, UINT message, WPARAM wParam, LPARAM lParam)
{
if (HWNDComponentPeer* const peer = getOwnerOfWindow (h))
{
jassert (isValidPeer (peer));
return peer->peerWindowProc (h, message, wParam, lParam);
}
return DefWindowProcW (h, message, wParam, lParam);
}
private:
static void* callFunctionIfNotLocked (MessageCallbackFunction* callback, void* userData)
{
if (MessageManager::getInstance()->currentThreadHasLockedMessageManager())
return callback (userData);
return MessageManager::getInstance()->callFunctionOnMessageThread (callback, userData);
}
static Point<float> getPointFromLParam (LPARAM lParam) noexcept
{
return Point<float> (static_cast<float> (GET_X_LPARAM (lParam)),
static_cast<float> (GET_Y_LPARAM (lParam)));
}
static Point<float> getCurrentMousePosGlobal() noexcept
{
return getPointFromLParam (GetMessagePos());
}
Point<float> getCurrentMousePos() noexcept
{
return globalToLocal (getCurrentMousePosGlobal());
}
LRESULT peerWindowProc (HWND h, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
//==============================================================================
case WM_NCHITTEST:
if ((styleFlags & windowIgnoresMouseClicks) != 0)
return HTTRANSPARENT;
if (! hasTitleBar())
return HTCLIENT;
break;
//==============================================================================
case WM_PAINT:
handlePaintMessage();
return 0;
case WM_NCPAINT:
if (wParam != 1) // (1 = a repaint of the entire NC region)
handlePaintMessage(); // this must be done, even with native titlebars, or there are rendering artifacts.
if (hasTitleBar())
break; // let the DefWindowProc handle drawing the frame.
return 0;
case WM_ERASEBKGND:
case WM_NCCALCSIZE:
if (hasTitleBar())
break;
return 1;
//==============================================================================
case WM_MOUSEMOVE: doMouseMove (getPointFromLParam (lParam)); return 0;
case WM_MOUSELEAVE: doMouseExit(); return 0;
case WM_LBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_RBUTTONDOWN: doMouseDown (getPointFromLParam (lParam), wParam); return 0;
case WM_LBUTTONUP:
case WM_MBUTTONUP:
case WM_RBUTTONUP: doMouseUp (getPointFromLParam (lParam), wParam); return 0;
case 0x020A: /* WM_MOUSEWHEEL */ doMouseWheel (wParam, true); return 0;
case 0x020E: /* WM_MOUSEHWHEEL */ doMouseWheel (wParam, false); return 0;
case WM_CAPTURECHANGED: doCaptureChanged(); return 0;
case WM_NCMOUSEMOVE:
if (hasTitleBar())
break;
return 0;
case WM_TOUCH:
if (getTouchInputInfo != nullptr)
return doTouchEvent ((int) wParam, (HTOUCHINPUT) lParam);
break;
case 0x119: /* WM_GESTURE */
if (doGestureEvent (lParam))
return 0;
break;
//==============================================================================
case WM_SIZING: return handleSizeConstraining (*(RECT*) lParam, wParam);
case WM_WINDOWPOSCHANGING: return handlePositionChanging (*(WINDOWPOS*) lParam);
case WM_WINDOWPOSCHANGED:
if (handlePositionChanged())
return 0;
break;
//==============================================================================
case WM_KEYDOWN:
case WM_SYSKEYDOWN:
if (doKeyDown (wParam))
return 0;
forwardMessageToParent (message, wParam, lParam);
break;
case WM_KEYUP:
case WM_SYSKEYUP:
if (doKeyUp (wParam))
return 0;
forwardMessageToParent (message, wParam, lParam);
break;
case WM_CHAR:
if (doKeyChar ((int) wParam, lParam))
return 0;
forwardMessageToParent (message, wParam, lParam);
break;
case WM_APPCOMMAND:
if (doAppCommand (lParam))
return TRUE;
break;
case WM_MENUCHAR: // triggered when alt+something is pressed
return MNC_CLOSE << 16; // (avoids making the default system beep)
//==============================================================================
case WM_SETFOCUS:
updateKeyModifiers();
handleFocusGain();
break;
case WM_KILLFOCUS:
if (hasCreatedCaret)
{
hasCreatedCaret = false;
DestroyCaret();
}
handleFocusLoss();
break;
case WM_ACTIVATEAPP:
// Windows does weird things to process priority when you swap apps,
// so this forces an update when the app is brought to the front
if (wParam != FALSE)
juce_repeatLastProcessPriority();
else
Desktop::getInstance().setKioskModeComponent (nullptr); // turn kiosk mode off if we lose focus
juce_checkCurrentlyFocusedTopLevelWindow();
modifiersAtLastCallback = -1;
return 0;
case WM_ACTIVATE:
if (LOWORD (wParam) == WA_ACTIVE || LOWORD (wParam) == WA_CLICKACTIVE)
{
handleAppActivation (wParam);
return 0;
}
break;
case WM_NCACTIVATE:
// while a temporary window is being shown, prevent Windows from deactivating the
// title bars of our main windows.
if (wParam == 0 && ! shouldDeactivateTitleBar)
wParam = TRUE; // change this and let it get passed to the DefWindowProc.
break;
case WM_MOUSEACTIVATE:
if (! component.getMouseClickGrabsKeyboardFocus())
return MA_NOACTIVATE;
break;
case WM_SHOWWINDOW:
if (wParam != 0)
{
component.setVisible (true);
handleBroughtToFront();
}
break;
case WM_CLOSE:
if (! component.isCurrentlyBlockedByAnotherModalComponent())
handleUserClosingWindow();
return 0;
case WM_QUERYENDSESSION:
if (JUCEApplicationBase* const app = JUCEApplicationBase::getInstance())
{
app->systemRequestedQuit();
return MessageManager::getInstance()->hasStopMessageBeenSent();
}
return TRUE;
case WM_POWERBROADCAST:
handlePowerBroadcast (wParam);
break;
case WM_SYNCPAINT:
return 0;
case WM_DISPLAYCHANGE:
InvalidateRect (h, 0, 0);
// intentional fall-through...
case WM_SETTINGCHANGE: // note the fall-through in the previous case!
doSettingChange();
break;
case 0x2e0: // WM_DPICHANGED
handleDPIChange();
break;
case WM_INITMENU:
initialiseSysMenu ((HMENU) wParam);
break;
case WM_SYSCOMMAND:
switch (wParam & 0xfff0)
{
case SC_CLOSE:
if (sendInputAttemptWhenModalMessage())
return 0;
if (hasTitleBar())
{
PostMessage (h, WM_CLOSE, 0, 0);
return 0;
}
break;
case SC_KEYMENU:
// (NB mustn't call sendInputAttemptWhenModalMessage() here because of very obscure
// situations that can arise if a modal loop is started from an alt-key keypress).
if (hasTitleBar() && h == GetCapture())
ReleaseCapture();
break;
case SC_MAXIMIZE:
if (! sendInputAttemptWhenModalMessage())
setFullScreen (true);
return 0;
case SC_MINIMIZE:
if (sendInputAttemptWhenModalMessage())
return 0;
if (! hasTitleBar())
{
setMinimised (true);
return 0;
}
break;
case SC_RESTORE:
if (sendInputAttemptWhenModalMessage())
return 0;
if (hasTitleBar())
{
if (isFullScreen())
{
setFullScreen (false);
return 0;
}
}
else
{
if (isMinimised())
setMinimised (false);
else if (isFullScreen())
setFullScreen (false);
return 0;
}
break;
}
break;
case WM_NCLBUTTONDOWN:
handleLeftClickInNCArea (wParam);
break;
case WM_NCRBUTTONDOWN:
case WM_NCMBUTTONDOWN:
sendInputAttemptWhenModalMessage();
break;
case WM_IME_SETCONTEXT:
imeHandler.handleSetContext (h, wParam == TRUE);
lParam &= ~ISC_SHOWUICOMPOSITIONWINDOW;
break;
case WM_IME_STARTCOMPOSITION: imeHandler.handleStartComposition (*this); return 0;
case WM_IME_ENDCOMPOSITION: imeHandler.handleEndComposition (*this, h); break;
case WM_IME_COMPOSITION: imeHandler.handleComposition (*this, h, lParam); return 0;
case WM_GETDLGCODE:
return DLGC_WANTALLKEYS;
default:
break;
}
return DefWindowProcW (h, message, wParam, lParam);
}
bool sendInputAttemptWhenModalMessage()
{
if (component.isCurrentlyBlockedByAnotherModalComponent())
{
if (Component* const current = Component::getCurrentlyModalComponent())
current->inputAttemptWhenModal();
return true;
}
return false;
}
//==============================================================================
class IMEHandler
{
public:
IMEHandler()
{
reset();
}
void handleSetContext (HWND hWnd, const bool windowIsActive)
{
if (compositionInProgress && ! windowIsActive)
{
compositionInProgress = false;
if (HIMC hImc = ImmGetContext (hWnd))
{
ImmNotifyIME (hImc, NI_COMPOSITIONSTR, CPS_COMPLETE, 0);
ImmReleaseContext (hWnd, hImc);
}
}
}
void handleStartComposition (ComponentPeer& owner)
{
reset();
if (TextInputTarget* const target = owner.findCurrentTextInputTarget())
target->insertTextAtCaret (String::empty);
}
void handleEndComposition (ComponentPeer& owner, HWND hWnd)
{
if (compositionInProgress)
{
// If this occurs, the user has cancelled the composition, so clear their changes..
if (TextInputTarget* const target = owner.findCurrentTextInputTarget())
{
target->setHighlightedRegion (compositionRange);
target->insertTextAtCaret (String::empty);
compositionRange.setLength (0);
target->setHighlightedRegion (Range<int>::emptyRange (compositionRange.getEnd()));
target->setTemporaryUnderlining (Array<Range<int> >());
}
if (HIMC hImc = ImmGetContext (hWnd))
{
ImmNotifyIME (hImc, NI_CLOSECANDIDATE, 0, 0);
ImmReleaseContext (hWnd, hImc);
}
}
reset();
}
void handleComposition (ComponentPeer& owner, HWND hWnd, const LPARAM lParam)
{
TextInputTarget* const target = owner.findCurrentTextInputTarget();
HIMC hImc = ImmGetContext (hWnd);
if (target == nullptr || hImc == 0)
return;
if (compositionRange.getStart() < 0)
compositionRange = Range<int>::emptyRange (target->getHighlightedRegion().getStart());
if ((lParam & GCS_RESULTSTR) != 0) // (composition has finished)
{
replaceCurrentSelection (target, getCompositionString (hImc, GCS_RESULTSTR),
Range<int>::emptyRange (-1));
reset();
target->setTemporaryUnderlining (Array<Range<int> >());
}
else if ((lParam & GCS_COMPSTR) != 0) // (composition is still in-progress)
{
replaceCurrentSelection (target, getCompositionString (hImc, GCS_COMPSTR),
getCompositionSelection (hImc, lParam));
target->setTemporaryUnderlining (getCompositionUnderlines (hImc, lParam));
compositionInProgress = true;
}
moveCandidateWindowToLeftAlignWithSelection (hImc, owner, target);
ImmReleaseContext (hWnd, hImc);
}
private:
//==============================================================================
Range<int> compositionRange; // The range being modified in the TextInputTarget
bool compositionInProgress;
//==============================================================================
void reset()
{
compositionRange = Range<int>::emptyRange (-1);
compositionInProgress = false;
}
String getCompositionString (HIMC hImc, const DWORD type) const
{
jassert (hImc != 0);
const int stringSizeBytes = ImmGetCompositionString (hImc, type, 0, 0);
if (stringSizeBytes > 0)
{
HeapBlock<TCHAR> buffer;
buffer.calloc (stringSizeBytes / sizeof (TCHAR) + 1);
ImmGetCompositionString (hImc, type, buffer, (DWORD) stringSizeBytes);
return String (buffer);
}
return String::empty;
}
int getCompositionCaretPos (HIMC hImc, LPARAM lParam, const String& currentIMEString) const
{
jassert (hImc != 0);
if ((lParam & CS_NOMOVECARET) != 0)
return compositionRange.getStart();
if ((lParam & GCS_CURSORPOS) != 0)
{
const int localCaretPos = ImmGetCompositionString (hImc, GCS_CURSORPOS, 0, 0);
return compositionRange.getStart() + jmax (0, localCaretPos);
}
return compositionRange.getStart() + currentIMEString.length();
}
// Get selected/highlighted range while doing composition:
// returned range is relative to beginning of TextInputTarget, not composition string
Range<int> getCompositionSelection (HIMC hImc, LPARAM lParam) const
{
jassert (hImc != 0);
int selectionStart = 0;
int selectionEnd = 0;
if ((lParam & GCS_COMPATTR) != 0)
{
// Get size of attributes array:
const int attributeSizeBytes = ImmGetCompositionString (hImc, GCS_COMPATTR, 0, 0);
if (attributeSizeBytes > 0)
{
// Get attributes (8 bit flag per character):
HeapBlock<char> attributes ((size_t) attributeSizeBytes);
ImmGetCompositionString (hImc, GCS_COMPATTR, attributes, (DWORD) attributeSizeBytes);
selectionStart = 0;
for (selectionStart = 0; selectionStart < attributeSizeBytes; ++selectionStart)
if (attributes[selectionStart] == ATTR_TARGET_CONVERTED || attributes[selectionStart] == ATTR_TARGET_NOTCONVERTED)
break;
for (selectionEnd = selectionStart; selectionEnd < attributeSizeBytes; ++selectionEnd)
if (attributes [selectionEnd] != ATTR_TARGET_CONVERTED && attributes[selectionEnd] != ATTR_TARGET_NOTCONVERTED)
break;
}
}
return Range<int> (selectionStart, selectionEnd) + compositionRange.getStart();
}
void replaceCurrentSelection (TextInputTarget* const target, const String& newContent, Range<int> newSelection)
{
if (compositionInProgress)
target->setHighlightedRegion (compositionRange);
target->insertTextAtCaret (newContent);
compositionRange.setLength (newContent.length());
if (newSelection.getStart() < 0)
newSelection = Range<int>::emptyRange (compositionRange.getEnd());
target->setHighlightedRegion (newSelection);
}
Array<Range<int> > getCompositionUnderlines (HIMC hImc, LPARAM lParam) const
{
Array<Range<int> > result;
if (hImc != 0 && (lParam & GCS_COMPCLAUSE) != 0)
{
const int clauseDataSizeBytes = ImmGetCompositionString (hImc, GCS_COMPCLAUSE, 0, 0);
if (clauseDataSizeBytes > 0)
{
const size_t numItems = clauseDataSizeBytes / sizeof (uint32);
HeapBlock<uint32> clauseData (numItems);
if (ImmGetCompositionString (hImc, GCS_COMPCLAUSE, clauseData, (DWORD) clauseDataSizeBytes) > 0)
for (size_t i = 0; i + 1 < numItems; ++i)
result.add (Range<int> ((int) clauseData [i], (int) clauseData [i + 1]) + compositionRange.getStart());
}
}
return result;
}
void moveCandidateWindowToLeftAlignWithSelection (HIMC hImc, ComponentPeer& peer, TextInputTarget* target) const
{
if (Component* const targetComp = dynamic_cast<Component*> (target))
{
const Rectangle<int> area (peer.getComponent().getLocalArea (targetComp, target->getCaretRectangle()));
CANDIDATEFORM pos = { 0, CFS_CANDIDATEPOS, { area.getX(), area.getBottom() }, { 0, 0, 0, 0 } };
ImmSetCandidateWindow (hImc, &pos);
}
}
JUCE_DECLARE_NON_COPYABLE (IMEHandler)
};
IMEHandler imeHandler;
//==============================================================================
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (HWNDComponentPeer)
};
ModifierKeys HWNDComponentPeer::currentModifiers;
ModifierKeys HWNDComponentPeer::modifiersAtLastCallback;
ComponentPeer* Component::createNewPeer (int styleFlags, void* parentHWND)
{
return new HWNDComponentPeer (*this, styleFlags, (HWND) parentHWND, false);
}
ComponentPeer* createNonRepaintingEmbeddedWindowsPeer (Component& component, void* parentHWND)
{
return new HWNDComponentPeer (component, ComponentPeer::windowIgnoresMouseClicks,
(HWND) parentHWND, true);
}
juce_ImplementSingleton_SingleThreaded (HWNDComponentPeer::WindowClassHolder)
//==============================================================================
void ModifierKeys::updateCurrentModifiers() noexcept
{
currentModifiers = HWNDComponentPeer::currentModifiers;
}
ModifierKeys ModifierKeys::getCurrentModifiersRealtime() noexcept
{
HWNDComponentPeer::updateKeyModifiers();
int mouseMods = 0;
if (HWNDComponentPeer::isKeyDown (VK_LBUTTON)) mouseMods |= ModifierKeys::leftButtonModifier;
if (HWNDComponentPeer::isKeyDown (VK_RBUTTON)) mouseMods |= ModifierKeys::rightButtonModifier;
if (HWNDComponentPeer::isKeyDown (VK_MBUTTON)) mouseMods |= ModifierKeys::middleButtonModifier;
HWNDComponentPeer::currentModifiers
= HWNDComponentPeer::currentModifiers.withoutMouseButtons().withFlags (mouseMods);
return HWNDComponentPeer::currentModifiers;
}
//==============================================================================
bool KeyPress::isKeyCurrentlyDown (const int keyCode)
{
SHORT k = (SHORT) keyCode;
if ((keyCode & extendedKeyModifier) == 0)
{
if (k >= (SHORT) 'a' && k <= (SHORT) 'z')
k += (SHORT) 'A' - (SHORT) 'a';
// Only translate if extendedKeyModifier flag is not set
const SHORT translatedValues[] = { (SHORT) ',', VK_OEM_COMMA,
(SHORT) '+', VK_OEM_PLUS,
(SHORT) '-', VK_OEM_MINUS,
(SHORT) '.', VK_OEM_PERIOD,
(SHORT) ';', VK_OEM_1,
(SHORT) ':', VK_OEM_1,
(SHORT) '/', VK_OEM_2,
(SHORT) '?', VK_OEM_2,
(SHORT) '[', VK_OEM_4,
(SHORT) ']', VK_OEM_6 };
for (int i = 0; i < numElementsInArray (translatedValues); i += 2)
if (k == translatedValues [i])
k = translatedValues [i + 1];
}
return HWNDComponentPeer::isKeyDown (k);
}
#if JUCE_MODULE_AVAILABLE_juce_audio_plugin_client
bool offerKeyMessageToJUCEWindow (MSG& m) { return HWNDComponentPeer::offerKeyMessageToJUCEWindow (m); }
#endif
//==============================================================================
bool JUCE_CALLTYPE Process::isForegroundProcess()
{
HWND fg = GetForegroundWindow();
if (fg == 0)
return true;
// when running as a plugin in IE8, the browser UI runs in a different process to the plugin, so
// process ID isn't a reliable way to check if the foreground window belongs to us - instead, we
// have to see if any of our windows are children of the foreground window
fg = GetAncestor (fg, GA_ROOT);
for (int i = ComponentPeer::getNumPeers(); --i >= 0;)
if (HWNDComponentPeer* const wp = dynamic_cast<HWNDComponentPeer*> (ComponentPeer::getPeer (i)))
if (wp->isInside (fg))
return true;
return false;
}
// N/A on Windows as far as I know.
void JUCE_CALLTYPE Process::makeForegroundProcess() {}
void JUCE_CALLTYPE Process::hide() {}
//==============================================================================
static BOOL CALLBACK enumAlwaysOnTopWindows (HWND hwnd, LPARAM lParam)
{
if (IsWindowVisible (hwnd))
{
DWORD processID = 0;
GetWindowThreadProcessId (hwnd, &processID);
if (processID == GetCurrentProcessId())
{
WINDOWINFO info;
if (GetWindowInfo (hwnd, &info)
&& (info.dwExStyle & WS_EX_TOPMOST) != 0)
{
*reinterpret_cast<bool*> (lParam) = true;
return FALSE;
}
}
}
return TRUE;
}
bool juce_areThereAnyAlwaysOnTopWindows()
{
bool anyAlwaysOnTopFound = false;
EnumWindows (&enumAlwaysOnTopWindows, (LPARAM) &anyAlwaysOnTopFound);
return anyAlwaysOnTopFound;
}
//==============================================================================
class WindowsMessageBox : public AsyncUpdater
{
public:
WindowsMessageBox (AlertWindow::AlertIconType iconType,
const String& boxTitle, const String& m,
Component* associatedComponent, UINT extraFlags,
ModalComponentManager::Callback* cb, const bool runAsync)
: flags (extraFlags | getMessageBoxFlags (iconType)),
owner (getWindowForMessageBox (associatedComponent)),
title (boxTitle), message (m), callback (cb)
{
if (runAsync)
triggerAsyncUpdate();
}
int getResult() const
{
const int r = MessageBox (owner, message.toWideCharPointer(), title.toWideCharPointer(), flags);
return (r == IDYES || r == IDOK) ? 1 : (r == IDNO ? 2 : 0);
}
void handleAsyncUpdate() override
{
const int result = getResult();
if (callback != nullptr)
callback->modalStateFinished (result);
delete this;
}
private:
UINT flags;
HWND owner;
String title, message;
ScopedPointer<ModalComponentManager::Callback> callback;
static UINT getMessageBoxFlags (AlertWindow::AlertIconType iconType) noexcept
{
UINT flags = MB_TASKMODAL | MB_SETFOREGROUND;
switch (iconType)
{
case AlertWindow::QuestionIcon: flags |= MB_ICONQUESTION; break;
case AlertWindow::WarningIcon: flags |= MB_ICONWARNING; break;
case AlertWindow::InfoIcon: flags |= MB_ICONINFORMATION; break;
default: break;
}
return flags;
}
static HWND getWindowForMessageBox (Component* associatedComponent)
{
return associatedComponent != nullptr ? (HWND) associatedComponent->getWindowHandle() : 0;
}
};
#if JUCE_MODAL_LOOPS_PERMITTED
void JUCE_CALLTYPE NativeMessageBox::showMessageBox (AlertWindow::AlertIconType iconType,
const String& title, const String& message,
Component* associatedComponent)
{
WindowsMessageBox box (iconType, title, message, associatedComponent, MB_OK, 0, false);
(void) box.getResult();
}
#endif
void JUCE_CALLTYPE NativeMessageBox::showMessageBoxAsync (AlertWindow::AlertIconType iconType,
const String& title, const String& message,
Component* associatedComponent,
ModalComponentManager::Callback* callback)
{
new WindowsMessageBox (iconType, title, message, associatedComponent, MB_OK, callback, true);
}
bool JUCE_CALLTYPE NativeMessageBox::showOkCancelBox (AlertWindow::AlertIconType iconType,
const String& title, const String& message,
Component* associatedComponent,
ModalComponentManager::Callback* callback)
{
ScopedPointer<WindowsMessageBox> mb (new WindowsMessageBox (iconType, title, message, associatedComponent,
MB_OKCANCEL, callback, callback != nullptr));
if (callback == nullptr)
return mb->getResult() != 0;
mb.release();
return false;
}
int JUCE_CALLTYPE NativeMessageBox::showYesNoCancelBox (AlertWindow::AlertIconType iconType,
const String& title, const String& message,
Component* associatedComponent,
ModalComponentManager::Callback* callback)
{
ScopedPointer<WindowsMessageBox> mb (new WindowsMessageBox (iconType, title, message, associatedComponent,
MB_YESNOCANCEL, callback, callback != nullptr));
if (callback == nullptr)
return mb->getResult();
mb.release();
return 0;
}
//==============================================================================
bool MouseInputSource::SourceList::addSource()
{
const int numSources = sources.size();
if (numSources == 0 || canUseMultiTouch())
{
addSource (numSources, numSources == 0);
return true;
}
return false;
}
Point<float> MouseInputSource::getCurrentRawMousePosition()
{
POINT mousePos;
GetCursorPos (&mousePos);
return Point<float> ((float) mousePos.x, (float) mousePos.y);
}
void MouseInputSource::setRawMousePosition (Point<float> newPosition)
{
SetCursorPos (roundToInt (newPosition.x),
roundToInt (newPosition.y));
}
//==============================================================================
class ScreenSaverDefeater : public Timer
{
public:
ScreenSaverDefeater()
{
startTimer (10000);
timerCallback();
}
void timerCallback() override
{
if (Process::isForegroundProcess())
{
INPUT input = { 0 };
input.type = INPUT_MOUSE;
input.mi.mouseData = MOUSEEVENTF_MOVE;
SendInput (1, &input, sizeof (INPUT));
}
}
};
static ScopedPointer<ScreenSaverDefeater> screenSaverDefeater;
void Desktop::setScreenSaverEnabled (const bool isEnabled)
{
if (isEnabled)
screenSaverDefeater = nullptr;
else if (screenSaverDefeater == nullptr)
screenSaverDefeater = new ScreenSaverDefeater();
}
bool Desktop::isScreenSaverEnabled()
{
return screenSaverDefeater == nullptr;
}
//==============================================================================
void LookAndFeel::playAlertSound()
{
MessageBeep (MB_OK);
}
//==============================================================================
void SystemClipboard::copyTextToClipboard (const String& text)
{
if (OpenClipboard (0) != 0)
{
if (EmptyClipboard() != 0)
{
const size_t bytesNeeded = CharPointer_UTF16::getBytesRequiredFor (text.getCharPointer()) + 4;
if (bytesNeeded > 0)
{
if (HGLOBAL bufH = GlobalAlloc (GMEM_MOVEABLE | GMEM_DDESHARE | GMEM_ZEROINIT, bytesNeeded + sizeof (WCHAR)))
{
if (WCHAR* const data = static_cast<WCHAR*> (GlobalLock (bufH)))
{
text.copyToUTF16 (data, bytesNeeded);
GlobalUnlock (bufH);
SetClipboardData (CF_UNICODETEXT, bufH);
}
}
}
}
CloseClipboard();
}
}
String SystemClipboard::getTextFromClipboard()
{
String result;
if (OpenClipboard (0) != 0)
{
if (HANDLE bufH = GetClipboardData (CF_UNICODETEXT))
{
if (const WCHAR* const data = (const WCHAR*) GlobalLock (bufH))
{
result = String (data, (size_t) (GlobalSize (bufH) / sizeof (WCHAR)));
GlobalUnlock (bufH);
}
}
CloseClipboard();
}
return result;
}
//==============================================================================
void Desktop::setKioskComponent (Component* kioskModeComp, bool enableOrDisable, bool /*allowMenusAndBars*/)
{
if (TopLevelWindow* tlw = dynamic_cast<TopLevelWindow*> (kioskModeComp))
tlw->setUsingNativeTitleBar (! enableOrDisable);
if (enableOrDisable)
kioskModeComp->setBounds (getDisplays().getMainDisplay().totalArea);
}
//==============================================================================
struct MonitorInfo
{
MonitorInfo (Rectangle<int> rect, bool main, double d) noexcept
: bounds (rect), dpi (d), isMain (main) {}
Rectangle<int> bounds;
double dpi;
bool isMain;
};
static BOOL CALLBACK enumMonitorsProc (HMONITOR hm, HDC, LPRECT r, LPARAM userInfo)
{
MONITORINFO info = { 0 };
info.cbSize = sizeof (info);
GetMonitorInfo (hm, &info);
const bool isMain = (info.dwFlags & 1 /* MONITORINFOF_PRIMARY */) != 0;
double dpi = 0;
if (getDPIForMonitor != nullptr)
{
UINT dpiX = 0, dpiY = 0;
if (SUCCEEDED (getDPIForMonitor (hm, MDT_Default, &dpiX, &dpiY)))
dpi = (dpiX + dpiY) / 2.0;
}
((Array<MonitorInfo>*) userInfo)->add (MonitorInfo (rectangleFromRECT (*r), isMain, dpi));
return TRUE;
}
void Desktop::Displays::findDisplays (float masterScale)
{
setDPIAwareness();
Array<MonitorInfo> monitors;
EnumDisplayMonitors (0, 0, &enumMonitorsProc, (LPARAM) &monitors);
const double globalDPI = getGlobalDPI();
if (monitors.size() == 0)
monitors.add (MonitorInfo (rectangleFromRECT (getWindowRect (GetDesktopWindow())), true, globalDPI));
// make sure the first in the list is the main monitor
for (int i = 1; i < monitors.size(); ++i)
if (monitors.getReference(i).isMain)
monitors.swap (i, 0);
RECT workArea;
SystemParametersInfo (SPI_GETWORKAREA, 0, &workArea, 0);
for (int i = 0; i < monitors.size(); ++i)
{
Display d;
d.userArea = d.totalArea = monitors.getReference(i).bounds / masterScale;
d.isMain = monitors.getReference(i).isMain;
d.dpi = monitors.getReference(i).dpi;
if (d.dpi == 0)
{
d.scale = masterScale;
d.dpi = globalDPI;
}
else
{
d.scale = d.dpi / 96.0;
}
if (d.isMain)
d.userArea = d.userArea.getIntersection (rectangleFromRECT (workArea) / masterScale);
displays.add (d);
}
}
//==============================================================================
static HICON extractFileHICON (const File& file)
{
WORD iconNum = 0;
WCHAR name [MAX_PATH * 2];
file.getFullPathName().copyToUTF16 (name, sizeof (name));
return ExtractAssociatedIcon ((HINSTANCE) Process::getCurrentModuleInstanceHandle(),
name, &iconNum);
}
Image juce_createIconForFile (const File& file)
{
Image image;
if (HICON icon = extractFileHICON (file))
{
image = IconConverters::createImageFromHICON (icon);
DestroyIcon (icon);
}
return image;
}
//==============================================================================
void* CustomMouseCursorInfo::create() const
{
const int maxW = GetSystemMetrics (SM_CXCURSOR);
const int maxH = GetSystemMetrics (SM_CYCURSOR);
Image im (image);
int hotspotX = hotspot.x;
int hotspotY = hotspot.y;
if (im.getWidth() > maxW || im.getHeight() > maxH)
{
im = im.rescaled (maxW, maxH);
hotspotX = (hotspotX * maxW) / image.getWidth();
hotspotY = (hotspotY * maxH) / image.getHeight();
}
return IconConverters::createHICONFromImage (im, FALSE, hotspotX, hotspotY);
}
void MouseCursor::deleteMouseCursor (void* const cursorHandle, const bool isStandard)
{
if (cursorHandle != nullptr && ! isStandard)
DestroyCursor ((HCURSOR) cursorHandle);
}
enum
{
hiddenMouseCursorHandle = 32500 // (arbitrary non-zero value to mark this type of cursor)
};
void* MouseCursor::createStandardMouseCursor (const MouseCursor::StandardCursorType type)
{
LPCTSTR cursorName = IDC_ARROW;
switch (type)
{
case NormalCursor:
case ParentCursor: break;
case NoCursor: return (void*) hiddenMouseCursorHandle;
case WaitCursor: cursorName = IDC_WAIT; break;
case IBeamCursor: cursorName = IDC_IBEAM; break;
case PointingHandCursor: cursorName = MAKEINTRESOURCE(32649); break;
case CrosshairCursor: cursorName = IDC_CROSS; break;
case LeftRightResizeCursor:
case LeftEdgeResizeCursor:
case RightEdgeResizeCursor: cursorName = IDC_SIZEWE; break;
case UpDownResizeCursor:
case TopEdgeResizeCursor:
case BottomEdgeResizeCursor: cursorName = IDC_SIZENS; break;
case TopLeftCornerResizeCursor:
case BottomRightCornerResizeCursor: cursorName = IDC_SIZENWSE; break;
case TopRightCornerResizeCursor:
case BottomLeftCornerResizeCursor: cursorName = IDC_SIZENESW; break;
case UpDownLeftRightResizeCursor: cursorName = IDC_SIZEALL; break;
case DraggingHandCursor:
{
static void* dragHandCursor = nullptr;
if (dragHandCursor == nullptr)
{
static const unsigned char dragHandData[] =
{ 71,73,70,56,57,97,16,0,16,0,145,2,0,0,0,0,255,255,255,0,0,0,0,0,0,33,249,4,1,0,0,2,0,44,0,0,0,0,16,0,
16,0,0,2,52,148,47,0,200,185,16,130,90,12,74,139,107,84,123,39,132,117,151,116,132,146,248,60,209,138,
98,22,203,114,34,236,37,52,77,217,247,154,191,119,110,240,193,128,193,95,163,56,60,234,98,135,2,0,59 };
dragHandCursor = CustomMouseCursorInfo (ImageFileFormat::loadFrom (dragHandData, sizeof (dragHandData)), 8, 7).create();
}
return dragHandCursor;
}
case CopyingCursor:
{
static void* copyCursor = nullptr;
if (copyCursor == nullptr)
{
static unsigned char copyCursorData[] = { 71,73,70,56,57,97,21,0,21,0,145,0,0,0,0,0,255,255,255,0,
128,128,255,255,255,33,249,4,1,0,0,3,0,44,0,0,0,0,21,0, 21,0,0,2,72,4,134,169,171,16,199,98,11,79,90,71,161,93,56,111,
78,133,218,215,137,31,82,154,100,200,86,91,202,142,12,108,212,87,235,174, 15,54,214,126,237,226,37,96,59,141,16,37,18,201,142,157,230,204,51,112,
252,114,147,74,83,5,50,68,147,208,217,16,71,149,252,124,5,0,59,0,0 };
const int copyCursorSize = 119;
copyCursor = CustomMouseCursorInfo (ImageFileFormat::loadFrom (copyCursorData, copyCursorSize), 1, 3).create();
}
return copyCursor;
}
default:
jassertfalse; break;
}
HCURSOR cursorH = LoadCursor (0, cursorName);
if (cursorH == 0)
cursorH = LoadCursor (0, IDC_ARROW);
return cursorH;
}
//==============================================================================
void MouseCursor::showInWindow (ComponentPeer*) const
{
HCURSOR c = (HCURSOR) getHandle();
if (c == 0)
c = LoadCursor (0, IDC_ARROW);
else if (c == (HCURSOR) hiddenMouseCursorHandle)
c = 0;
SetCursor (c);
}
void MouseCursor::showInAllWindows() const
{
showInWindow (nullptr);
}