winamp/Src/Winamp/dwm.cpp

#include "main.h"
#include "config.h"
#include "wintheme.h"
#include <shobjidl.h>
#include <tataki/canvas/bltcanvas.h>
#include <tataki/bitmap/bitmap.h>
#include "../Agave/Language/api_language.h"

typedef HRESULT(WINAPI *DWMREGISTERTHUMBNAIL)(HWND hwndDestination, HWND hwndSource, void **phThumbnailId);
typedef	HRESULT(WINAPI *DWMUPATETHUMBNAILPROPERTIES)(void* hThumbnailId, void* ptnProperties);
typedef HRESULT(WINAPI *DWMUNREGISTERTHUMBNAIL)(void *hThumbnailId);
typedef HRESULT(WINAPI *DWMSETWINDOWATTRIBUTE)(HWND hwnd, DWORD dwAttribute, LPCVOID pvAttribute, DWORD cbAttribute);
typedef HRESULT (WINAPI *DWMENABLEMMCSS)(BOOL fEnableMMCSS);
typedef HRESULT (WINAPI *DWMSETICONICTHUMBNAIL)(HWND hwnd,    HBITMAP hbmp,    DWORD dwSITFlags);
typedef HRESULT (WINAPI *DWMINVALIDATEICONICBITMAPS)(          HWND hwnd);
typedef HRESULT (WINAPI *DWMSETICONICLIVEPREVIEWBITMAP )(HWND hwnd,    HBITMAP hbmp, POINT *pptClient,  DWORD dwSITFlags);
static HMODULE dwmapi;
static void *thumbnail;
static DWMREGISTERTHUMBNAIL regThumbnail;
static DWMUPATETHUMBNAILPROPERTIES updateProp;
static DWMUNREGISTERTHUMBNAIL unregThumbnail;
static DWMSETWINDOWATTRIBUTE setWindowAttribute;
static DWMENABLEMMCSS dwmEnableMMCSS;
static DWMSETICONICTHUMBNAIL dwmSetIconicThumbnail;
static DWMINVALIDATEICONICBITMAPS dwmInvalidateIconicBitmaps;
static DWMSETICONICLIVEPREVIEWBITMAP dwmSetIconicLivePreviewBitmap;

HIMAGELIST toolbarIcons = NULL;

BOOL atti_present=false;
static bool triedLoad=false;
static bool LoadDWMApi()
{
	if (!triedLoad)
	{
		wchar_t gen_win7shell_path[MAX_PATH] = {0};
		PathCombineW(gen_win7shell_path, PLUGINDIR, L"gen_win7shell.dll");
		HMODULE gen_win7shell = LoadLibraryW(gen_win7shell_path);
		if (gen_win7shell)
		{
			atti_present=true;
			FreeLibrary(gen_win7shell);
		}

		dwmapi = LoadLibraryA("dwmapi.dll");

		regThumbnail = (DWMREGISTERTHUMBNAIL)GetProcAddress(dwmapi, "DwmRegisterThumbnail");
		updateProp = (DWMUPATETHUMBNAILPROPERTIES)GetProcAddress(dwmapi, "DwmUpdateThumbnailProperties");
		unregThumbnail = (DWMUNREGISTERTHUMBNAIL)GetProcAddress(dwmapi, "DwmUnregisterThumbnail");
		setWindowAttribute = (DWMSETWINDOWATTRIBUTE)GetProcAddress(dwmapi, "DwmSetWindowAttribute");
		dwmEnableMMCSS = (DWMENABLEMMCSS)GetProcAddress(dwmapi, "DwmEnableMMCSS");
		dwmSetIconicThumbnail = (DWMSETICONICTHUMBNAIL)GetProcAddress(dwmapi, "DwmSetIconicThumbnail");
		dwmInvalidateIconicBitmaps = (DWMINVALIDATEICONICBITMAPS)GetProcAddress(dwmapi, "DwmInvalidateIconicBitmaps");
		dwmSetIconicLivePreviewBitmap = (DWMSETICONICLIVEPREVIEWBITMAP)GetProcAddress(dwmapi, "DwmSetIconicLivePreviewBitmap");

		triedLoad = true;
	}

	return dwmapi && regThumbnail && updateProp && unregThumbnail && setWindowAttribute && dwmEnableMMCSS;
}

bool LoadToolbarIcons()
{
	//toolbarIcons already loaded
	if (toolbarIcons != NULL)
	{
		return true;
	}
	
	//load toolbarIcons
	toolbarIcons = ImageList_Create(GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON), ILC_COLOR32, 5, 0);
	if (toolbarIcons == NULL)
		return false;

	for (int i = 0; i < 5; i++)
	{
		HICON hIcon = LoadIconW(hMainInstance, MAKEINTRESOURCE(IDI_TBICON1+i)); 
		if (hIcon != NULL)
			ImageList_AddIcon(toolbarIcons, hIcon);
		// no need to call DestroyIcon(..) if using LoadIcon(..)
		// as the OS will free things anyway - might be cause of
		// the random button disappearing issue...?
		//DestroyIcon(hIcon);
	}

	return true;
}

static BOOL taskbar_inited = FALSE;
void OnTaskbarButtonCreated(BOOL force)
{
	if (pTaskbar3 || (SUCCEEDED(CoCreateInstance(CLSID_TaskbarList, NULL, CLSCTX_INPROC_SERVER,
												 IID_PPV_ARGS(&pTaskbar3))) && pTaskbar3))
	{
		if (force)
		{
			taskbar_inited = TRUE;
			pTaskbar3->HrInit();
		}
		if (taskbar_inited)
		{
			RegisterThumbnailTab(IsWindow(g_dialog_box_parent) ? g_dialog_box_parent : hMainWindow);
		}
	}
}

void UnregisterThumbnailTab(HWND hWnd)
{
	if (LoadDWMApi() && !atti_present)
	{
		if (!IsVistaOrLower() && IsWindow(hWnd) && pTaskbar3 != NULL)
		{
			if (taskbar_inited)
				pTaskbar3->UnregisterTab(hWnd);
		}
	}
}

static void addToolbarButtons(HWND hWnd, BOOL update)
{
	THUMBBUTTON thbButtons[5];
	DWORD dwMask = THB_BITMAP | THB_TOOLTIP;

	thbButtons[0].dwMask = (THUMBBUTTONMASK)dwMask;
	thbButtons[0].iId = 0;
	thbButtons[0].iBitmap = 0;
	StringCbCopyW(thbButtons[0].szTip, sizeof(thbButtons[0].szTip), getStringW(IDS_WIN7TOOLBAR_TOOLTIP_PREVIOUS, NULL, 0));

	thbButtons[1].dwMask = (THUMBBUTTONMASK)dwMask;
	thbButtons[1].iId = 1;
	thbButtons[1].iBitmap = 1;
	StringCbCopyW(thbButtons[1].szTip, sizeof(thbButtons[1].szTip), getStringW(IDS_WIN7TOOLBAR_TOOLTIP_PLAY, NULL, 0));

	thbButtons[2].dwMask = (THUMBBUTTONMASK)dwMask;
	thbButtons[2].iId = 2;
	thbButtons[2].iBitmap = 2;
	StringCbCopyW(thbButtons[2].szTip, sizeof(thbButtons[2].szTip), getStringW(IDS_WIN7TOOLBAR_TOOLTIP_PAUSE, NULL, 0));

	thbButtons[3].dwMask = (THUMBBUTTONMASK)dwMask;
	thbButtons[3].iId = 3;
	thbButtons[3].iBitmap = 3;
	StringCbCopyW(thbButtons[3].szTip, sizeof(thbButtons[3].szTip), getStringW(IDS_WIN7TOOLBAR_TOOLTIP_STOP, NULL, 0));

	thbButtons[4].dwMask = (THUMBBUTTONMASK)dwMask;
	thbButtons[4].iId = 4;
	thbButtons[4].iBitmap = 4;
	StringCbCopyW(thbButtons[4].szTip, sizeof(thbButtons[4].szTip), getStringW(IDS_WIN7TOOLBAR_TOOLTIP_NEXT, NULL, 0));

	if (update)
		pTaskbar3->ThumbBarUpdateButtons(hWnd, ARRAYSIZE(thbButtons), thbButtons);
	else
		pTaskbar3->ThumbBarAddButtons(hWnd, ARRAYSIZE(thbButtons), thbButtons);
}

void RegisterThumbnailTab(HWND hWnd)
{
	if (LoadDWMApi() && !atti_present)
	{
		if (dwmInvalidateIconicBitmaps) // even if DWM is loaded, this only exists on win7 (NT6.1)
			dwmInvalidateIconicBitmaps(hMainWindow);

		if (!IsWindow(hWnd))
		{
			hWnd = hMainWindow;
		}

		if (hWnd != hMainWindow)
		{
			wchar_t title[512] = {0};
			GetWindowTextW(hMainWindow, title, sizeof(title));
			SetWindowTextW(hWnd, title);

#ifdef WIN64
			HICON hIcon = (HICON)GetClassLongPtr(hMainWindow, GCLP_HICONSM);
#else
			HICON hIcon = (HICON)GetClassLong(hMainWindow, GCL_HICONSM);
#endif


			SendMessageW(hWnd, WM_SETICON, (WPARAM)ICON_SMALL, (LPARAM)hIcon);
		}

		if (IsWindow(hWnd) && IsWindow(hMainWindow))
		{
			BOOL dwm_setting = FALSE;
			setWindowAttribute(hWnd, DWMWA_FORCE_ICONIC_REPRESENTATION, &dwm_setting, sizeof(dwm_setting));		
			setWindowAttribute(hWnd, DWMWA_HAS_ICONIC_BITMAP, &dwm_setting, sizeof(dwm_setting));

			if (!IsVistaOrLower() && pTaskbar3 != NULL)
			{
				// shouldn't fail, but there's a case on loading where it can due to timing quirks
				// so for that we then allow the regsistation to still happen (hence the dup code)
				HRESULT hr = pTaskbar3->RegisterTab(hWnd, hMainWindow);
				if (SUCCEEDED(hr))
				{
					if (SUCCEEDED(pTaskbar3->SetTabOrder(hWnd, NULL)))
					{
						pTaskbar3->SetTabActive(hWnd, hMainWindow, 0);
			
						if (LoadToolbarIcons())
						{
							HRESULT hr = pTaskbar3->ThumbBarSetImageList(hWnd, toolbarIcons);
							if (SUCCEEDED(hr)) 
							{
								addToolbarButtons(hWnd, false);
							}
						}
					}
				}
				else
				{
					if (SUCCEEDED(pTaskbar3->SetTabOrder(hWnd, NULL)))
					{
						pTaskbar3->SetTabActive(hWnd, hMainWindow, 0);
			
						if (LoadToolbarIcons())
						{
							HRESULT hr = pTaskbar3->ThumbBarSetImageList(hWnd, toolbarIcons);
							if (SUCCEEDED(hr)) 
							{
								addToolbarButtons(hWnd, false);
							}
						}
					}
				}
			}

			if (hWnd != hMainWindow)
			{
				dwm_setting = TRUE;
				setWindowAttribute(hMainWindow, DWMWA_FORCE_ICONIC_REPRESENTATION, &dwm_setting, sizeof(dwm_setting));		
				setWindowAttribute(hMainWindow, DWMWA_HAS_ICONIC_BITMAP, &dwm_setting, sizeof(dwm_setting));
			}
		}
	}
}

void DisableVistaPreview()
{
	if (LoadDWMApi())
	{
		BOOL blah=TRUE;
		setWindowAttribute(hMainWindow, DWMWA_FORCE_ICONIC_REPRESENTATION, &blah, sizeof(blah));
		setWindowAttribute(hMainWindow, DWMWA_HAS_ICONIC_BITMAP, &blah, sizeof(blah));
	}
}

static bool done_the_dance=false;
void DoTheVistaVideoDance()
{
	if (!done_the_dance && LoadDWMApi())
	{
		dwmEnableMMCSS(TRUE); // the magic "make my program not suck" function
		/* TODO: 
		DWM_PRESENT_PARAMETERS dpp;
		memset(&dpp, 0, sizeof(dpp));
		dpp.cbSize = sizeof(dpp);
		dpp.fQueue = true;
		dpp.cBuffer = 8;
		dpp.fUseSourceRate = false;
		dpp.cRefreshesPerFrame = 1;
		dpp.eSampling = DWM_SOURCE_FRAME_SAMPLING_POINT;
		HRESULT hr = DwmSetPresentParameters(hWnd, &dpp);
		*/
		// TODO also, unrelated, but check out AvSetMmThreadCharacteristics sometime.
	}
	done_the_dance = true;
}

static void Adjust(int bmpw, int bmph, RECT &r)
{
	// maintain 'square' stretching
	int w = r.right - r.left;
	int h = r.bottom - r.top;
	double aspX = (double)(w)/(double)bmpw;
	double aspY = (double)(h)/(double)bmph;
	double asp = min(aspX, aspY);
	int newW = (int)(bmpw*asp);
	int newH = (int)(bmph*asp);
	r.left = (w - newW)/2;
	r.top = (h - newH)/2;
	r.right = r.left + newW;
	r.bottom = r.top + newH;
}

void RefreshIconicThumbnail()
{
	if (LoadDWMApi() && !atti_present)
	{
		if (dwmInvalidateIconicBitmaps) // even if DWM is loaded, this only exists on win7 (NT6.1)
			dwmInvalidateIconicBitmaps(hMainWindow);
	}
}

void OnIconicThumbnail(int width, int height)
{
	static BltCanvas *iconic_thumbnail_bitmap=0;

	HWND hWnd = g_dialog_box_parent?g_dialog_box_parent:hMainWindow;

	RECT client_size;
	GetClientRect(hWnd, &client_size);

	if (!iconic_thumbnail_bitmap)
	{
		iconic_thumbnail_bitmap = new BltCanvas(client_size.right, client_size.bottom, hMainWindow);
	}
	else
	{
		iconic_thumbnail_bitmap->DestructiveResize(client_size.right, client_size.bottom);
	}

	SendMessageW(hWnd, WM_PRINTCLIENT, (WPARAM) iconic_thumbnail_bitmap->getHDC(),  PRF_CHILDREN | PRF_CLIENT | /*PRF_ERASEBKGND |*/ PRF_NONCLIENT /*| PRF_OWNED*/);

	void *bits=0;
	BITMAPINFO bmi = {0};
	bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
	bmi.bmiHeader.biWidth = width;
	bmi.bmiHeader.biHeight = -height;
	bmi.bmiHeader.biPlanes = 1;
	bmi.bmiHeader.biBitCount = 32;
	bmi.bmiHeader.biCompression = BI_RGB;
	HBITMAP hbmp = CreateDIBSection(iconic_thumbnail_bitmap->getHDC(), &bmi, DIB_RGB_COLORS, &bits, NULL, 0);

	if (hbmp)
	{
		BltCanvas resizedBitmap(hbmp);
		int x=0, y=0;

		RECT dest;
		dest.left = x;
		dest.top = y;
		dest.right = width;
		dest.bottom = height;
		resizedBitmap.drawRect(&dest, 1, 0);
		Adjust(client_size.right, client_size.bottom, dest);
		iconic_thumbnail_bitmap->stretchToRectAlpha(&resizedBitmap, &client_size, &dest);
		dwmSetIconicThumbnail(hMainWindow, hbmp, 0);
	}
}

void OnThumbnailPreview()
{
	static BltCanvas *thumbnail_preview_bitmap=0;

	HWND hWnd = g_dialog_box_parent?g_dialog_box_parent:hMainWindow;

	RECT client_size;
	GetClientRect(hWnd, &client_size);

	if (!thumbnail_preview_bitmap)
	{
		thumbnail_preview_bitmap = new BltCanvas(client_size.right, client_size.bottom, hWnd);
	}
	else
	{
		thumbnail_preview_bitmap->DestructiveResize(client_size.right, client_size.bottom);
	}

	SendMessageW(hWnd, WM_PRINT, (WPARAM) thumbnail_preview_bitmap->getHDC(), PRF_CHILDREN | PRF_CLIENT | PRF_ERASEBKGND | PRF_NONCLIENT /*| PRF_OWNED*/);

	void *bits=0;
	BITMAPINFO bmi = {0};
	bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
	bmi.bmiHeader.biWidth = client_size.right - client_size.left;
	bmi.bmiHeader.biHeight = client_size.top - client_size.bottom;
	bmi.bmiHeader.biPlanes = 1;
	bmi.bmiHeader.biBitCount = 32;
	bmi.bmiHeader.biCompression = BI_RGB;
	HBITMAP hbmp = CreateDIBSection(thumbnail_preview_bitmap->getHDC(), &bmi, DIB_RGB_COLORS, &bits, NULL, 0);

	if (hbmp)
	{
		POINT offset;
		offset.x = client_size.left;
		offset.y = client_size.top;
		if (dwmSetIconicLivePreviewBitmap(hWnd, hbmp, &offset,  1) ==  S_OK)
		{
			MessageBoxA(NULL, "winamp/live", "winamp/live", MB_OK);
		}
		else
		{
			MessageBoxA(NULL, "winamp/no live", "winamp/no live", MB_OK);
		}
	}
}