src/GUI_Win32.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // MuldeR's Utilities for Qt
   3 // Copyright (C) 2004-2019 LoRd_MuldeR <MuldeR2@GMX.de>
   4 //
   5 // This library is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU Lesser General Public
   7 // License as published by the Free Software Foundation; either
   8 // version 2.1 of the License, or (at your option) any later version.
   9 //
  10 // This library is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 // Lesser General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU Lesser General Public
  16 // License along with this library; if not, write to the Free Software
  17 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  18 //
  19 // http://www.gnu.org/licenses/lgpl-2.1.txt
  20 //////////////////////////////////////////////////////////////////////////////////
  21
  22 //Win32 API
  23 #define WIN32_LEAN_AND_MEAN 1
  24 #include <Windows.h>
  25
  26 //MUtils
  27 #include <MUtils/GUI.h>
  28 #include <MUtils/OSSupport.h>
  29
  30 //Internal
  31 #include "Utils_Win32.h"
  32
  33 //Qt
  34 #include <QIcon>
  35 #include <QApplication>
  36 #include <QWidget>
  37 #include <QReadWriteLock>
  38 #include <Dwmapi.h>
  39
  40 ///////////////////////////////////////////////////////////////////////////////
  41 // THEME SUPPORT
  42 ///////////////////////////////////////////////////////////////////////////////
  43
  44 static QReadWriteLock g_themes_lock;
  45 static int g_themes_initialized = 0;
  46
  47 typedef int (WINAPI *IsAppThemedFunction)(void);
  48
  49 bool MUtils::GUI::themes_enabled(void)
  50 {
  51         QReadLocker readLock(&g_themes_lock);
  52
  53         if(g_themes_initialized != 0)
  54         {
  55                 return (g_themes_initialized > 0);
  56         }
  57
  58         readLock.unlock();
  59         QWriteLocker writeLock(&g_themes_lock);
  60
  61         if(g_themes_initialized != 0)
  62         {
  63                 return (g_themes_initialized > 0);
  64         }
  65
  66         const MUtils::OS::Version::os_version_t &osVersion = MUtils::OS::os_version();
  67         if(osVersion >= MUtils::OS::Version::WINDOWS_WINXP)
  68         {
  69                 const IsAppThemedFunction isAppThemedPtr = MUtils::Win32Utils::resolve<IsAppThemedFunction>(QLatin1String("UxTheme"), QLatin1String("IsAppThemed"));
  70                 if(isAppThemedPtr)
  71                 {
  72                         g_themes_initialized = isAppThemedPtr() ? 1 : (-1);
  73                         if(g_themes_initialized < 0)
  74                         {
  75                                 qWarning("Theme support is disabled for this process!");
  76                         }
  77                 }
  78         }
  79
  80         return (g_themes_initialized > 0);
  81 }
  82
  83 ///////////////////////////////////////////////////////////////////////////////
  84 // SYSTEM MENU
  85 ///////////////////////////////////////////////////////////////////////////////
  86
  87 bool MUtils::GUI::sysmenu_append(const QWidget *win, const unsigned int identifier, const QString &text)
  88 {
  89         bool ok = false;
  90
  91         if(HMENU hMenu = GetSystemMenu(reinterpret_cast<HWND>(win->winId()), FALSE))
  92         {
  93                 ok = (AppendMenuW(hMenu, MF_SEPARATOR, 0, 0) == TRUE);
  94                 ok = (AppendMenuW(hMenu, MF_STRING, identifier, MUTILS_WCHR(text)) == TRUE);
  95         }
  96
  97         return ok;
  98 }
  99
 100 bool MUtils::GUI::sysmenu_update(const QWidget *win, const unsigned int identifier, const QString &text)
 101 {
 102         bool ok = false;
 103
 104         if(HMENU hMenu = ::GetSystemMenu(reinterpret_cast<HWND>(win->winId()), FALSE))
 105         {
 106                 ok = (ModifyMenu(hMenu, identifier, MF_STRING | MF_BYCOMMAND, identifier, MUTILS_WCHR(text)) == TRUE);
 107         }
 108         return ok;
 109 }
 110
 111 bool MUtils::GUI::sysmenu_check_msg(void *const message, const unsigned int &identifier)
 112 {
 113         return (((MSG*)message)->message == WM_SYSCOMMAND) && ((((MSG*)message)->wParam & 0xFFF0) == identifier);
 114 }
 115
 116 ///////////////////////////////////////////////////////////////////////////////
 117 // CLOSE BUTTON
 118 ///////////////////////////////////////////////////////////////////////////////
 119
 120 bool MUtils::GUI::enable_close_button(const QWidget *win, const bool &bEnable)
 121 {
 122         bool ok = false;
 123
 124         if(HMENU hMenu = GetSystemMenu(reinterpret_cast<HWND>(win->winId()), FALSE))
 125         {
 126                 ok = (EnableMenuItem(hMenu, SC_CLOSE, MF_BYCOMMAND | (bEnable ? MF_ENABLED : MF_GRAYED)) == TRUE);
 127         }
 128
 129         return ok;
 130 }
 131
 132 ///////////////////////////////////////////////////////////////////////////////
 133 // BRING WINDOW TO FRONT
 134 ///////////////////////////////////////////////////////////////////////////////
 135
 136 static BOOL CALLBACK bring_process_to_front_helper(HWND hwnd, LPARAM lParam)
 137 {
 138         DWORD processId = *reinterpret_cast<WORD*>(lParam);
 139         DWORD windowProcessId = NULL;
 140         GetWindowThreadProcessId(hwnd, &windowProcessId);
 141         if(windowProcessId == processId)
 142         {
 143                 SwitchToThisWindow(hwnd, TRUE);
 144                 SetForegroundWindow(hwnd);
 145                 return FALSE;
 146         }
 147
 148         return TRUE;
 149 }
 150
 151 bool MUtils::GUI::bring_to_front(const QWidget *window)
 152 {
 153         bool ret = false;
 154
 155         if(window)
 156         {
 157                 for(int i = 0; (i < 5) && (!ret); i++)
 158                 {
 159                         ret = (SetForegroundWindow(reinterpret_cast<HWND>(window->winId())) != FALSE);
 160                         SwitchToThisWindow(reinterpret_cast<HWND>(window->winId()), TRUE);
 161                 }
 162                 LockSetForegroundWindow(LSFW_LOCK);
 163         }
 164
 165         return ret;
 166 }
 167
 168 bool MUtils::GUI::bring_to_front(const unsigned long pid)
 169 {
 170         return EnumWindows(bring_process_to_front_helper, reinterpret_cast<LPARAM>(&pid)) == TRUE;
 171 }
 172
 173 ///////////////////////////////////////////////////////////////////////////////
 174 // SHEET OF GLASS EFFECT
 175 ///////////////////////////////////////////////////////////////////////////////
 176
 177 typedef HRESULT (__stdcall *DwmIsCompositionEnabledFun)      (BOOL *bEnabled);
 178 typedef HRESULT (__stdcall *DwmExtendFrameIntoClientAreaFun) (HWND hWnd, const MARGINS* pMarInset);
 179 typedef HRESULT (__stdcall *DwmEnableBlurBehindWindowFun)    (HWND hWnd, const DWM_BLURBEHIND* pBlurBehind);
 180
 181 bool MUtils::GUI::sheet_of_glass(QWidget *const window)
 182 {
 183         const DwmIsCompositionEnabledFun      dwmIsCompositionEnabledFun      = MUtils::Win32Utils::resolve<DwmIsCompositionEnabledFun>     (QLatin1String("dwmapi"), QLatin1String("DwmIsCompositionEnabled")     );
 184         const DwmExtendFrameIntoClientAreaFun dwmExtendFrameIntoClientAreaFun = MUtils::Win32Utils::resolve<DwmExtendFrameIntoClientAreaFun>(QLatin1String("dwmapi"), QLatin1String("DwmExtendFrameIntoClientArea"));
 185         const DwmEnableBlurBehindWindowFun    dwmEnableBlurBehindWindowFun    = MUtils::Win32Utils::resolve<DwmEnableBlurBehindWindowFun>   (QLatin1String("dwmapi"), QLatin1String("DwmEnableBlurBehindWindow")   );
 186
 187         //Required functions available?
 188         BOOL bCompositionEnabled = FALSE;
 189         if(dwmIsCompositionEnabledFun && dwmExtendFrameIntoClientAreaFun && dwmEnableBlurBehindWindowFun)
 190         {
 191                 //Check if composition is currently enabled
 192                 if(HRESULT hr = dwmIsCompositionEnabledFun(&bCompositionEnabled))
 193                 {
 194                         qWarning("DwmIsCompositionEnabled function has failed! (error %d)", hr);
 195                         return false;
 196                 }
 197         }
 198
 199         //All functions available *and* composition enabled?
 200         if(!bCompositionEnabled)
 201         {
 202                 return false;
 203         }
 204
 205         //Enable the "sheet of glass" effect on this window
 206         MARGINS margins = {-1, -1, -1, -1};
 207         if(HRESULT hr = dwmExtendFrameIntoClientAreaFun(reinterpret_cast<HWND>(window->winId()), &margins))
 208         {
 209                 qWarning("DwmExtendFrameIntoClientArea function has failed! (error %d)", hr);
 210                 return false;
 211         }
 212
 213         //Create and populate the Blur Behind structure
 214         DWM_BLURBEHIND bb;
 215         memset(&bb, 0, sizeof(DWM_BLURBEHIND));
 216         bb.fEnable = TRUE;
 217         bb.dwFlags = DWM_BB_ENABLE;
 218         if(HRESULT hr = dwmEnableBlurBehindWindowFun(reinterpret_cast<HWND>(window->winId()), &bb))
 219         {
 220                 qWarning("DwmEnableBlurBehindWindow function has failed! (error %d)", hr);
 221                 return false;
 222         }
 223
 224         //Required for Qt
 225         window->setAutoFillBackground(false);
 226         window->setAttribute(Qt::WA_TranslucentBackground);
 227         window->setAttribute(Qt::WA_NoSystemBackground);
 228
 229         return true;
 230 }
 231
 232 bool MUtils::GUI::sheet_of_glass_update(QWidget *const window)
 233 {
 234         const DwmIsCompositionEnabledFun      dwmIsCompositionEnabledFun      = MUtils::Win32Utils::resolve<DwmIsCompositionEnabledFun>     (QLatin1String("dwmapi"), QLatin1String("DwmIsCompositionEnabled")     );
 235         const DwmExtendFrameIntoClientAreaFun dwmExtendFrameIntoClientAreaFun = MUtils::Win32Utils::resolve<DwmExtendFrameIntoClientAreaFun>(QLatin1String("dwmapi"), QLatin1String("DwmExtendFrameIntoClientArea"));
 236         const DwmEnableBlurBehindWindowFun    dwmEnableBlurBehindWindowFun    = MUtils::Win32Utils::resolve<DwmEnableBlurBehindWindowFun>   (QLatin1String("dwmapi"), QLatin1String("DwmEnableBlurBehindWindow")   );
 237
 238         //Required functions available?
 239         BOOL bCompositionEnabled = FALSE;
 240         if(dwmIsCompositionEnabledFun && dwmExtendFrameIntoClientAreaFun && dwmEnableBlurBehindWindowFun)
 241         {
 242                 //Check if composition is currently enabled
 243                 if(HRESULT hr = dwmIsCompositionEnabledFun(&bCompositionEnabled))
 244                 {
 245                         qWarning("DwmIsCompositionEnabled function has failed! (error %d)", hr);
 246                         return false;
 247                 }
 248         }
 249
 250         //All functions available *and* composition enabled?
 251         if(!bCompositionEnabled)
 252         {
 253                 return false;
 254         }
 255
 256         //Create and populate the Blur Behind structure
 257         DWM_BLURBEHIND bb;
 258         memset(&bb, 0, sizeof(DWM_BLURBEHIND));
 259         bb.fEnable = TRUE;
 260         bb.dwFlags = DWM_BB_ENABLE;
 261         if(HRESULT hr = dwmEnableBlurBehindWindowFun(reinterpret_cast<HWND>(window->winId()), &bb))
 262         {
 263                 qWarning("DwmEnableBlurBehindWindow function has failed! (error %d)", hr);
 264                 return false;
 265         }
 266
 267         return true;
 268 }
 269
 270 ///////////////////////////////////////////////////////////////////////////////
 271 // SYSTEM COLORS
 272 ///////////////////////////////////////////////////////////////////////////////
 273
 274 QColor MUtils::GUI::system_color(const int &color_id)
 275 {
 276         int nIndex = -1;
 277
 278         switch(color_id)
 279         {
 280         case SYSCOLOR_TEXT:
 281                 nIndex = COLOR_WINDOWTEXT;              /*Text in windows*/
 282                 break;
 283         case SYSCOLOR_BACKGROUND:
 284                 nIndex = COLOR_WINDOW;                  /*Window background*/
 285                 break;
 286         case SYSCOLOR_CAPTION:
 287                 nIndex = COLOR_CAPTIONTEXT;             /*Text in caption, size box, and scroll bar arrow box*/
 288                 break;
 289         default:
 290                 qWarning("Unknown system color id (%d) specified!", color_id);
 291                 nIndex = COLOR_WINDOWTEXT;
 292         }
 293
 294         const DWORD rgb = GetSysColor(nIndex);
 295         QColor color(GetRValue(rgb), GetGValue(rgb), GetBValue(rgb));
 296         return color;
 297 }